mirror of https://github.com/mgba-emu/mgba.git
Third-Party: Include zlib if not present
This commit is contained in:
Jeffrey Pfau
parent
60a9e74e0c
commit
3b353ac621
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@ -160,6 +160,7 @@ if(BUILD_GL)
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set(BUILD_GL OFF)
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endif()
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endif()
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set(WANT_ZLIB ${USE_ZLIB})
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set(WANT_PNG ${USE_PNG})
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find_feature(USE_FFMPEG "libavcodec;libavformat;libavresample;libavutil;libswscale")
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find_feature(USE_ZLIB "ZLIB")
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@ -324,6 +325,20 @@ if(USE_MAGICK)
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set(CPACK_DEBIAN_PACKAGE_DEPENDS "${CPACK_DEBIAN_PACKAGE_DEPENDS},libmagickwand${MAGICKWAND_DEB_VERSION}")
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endif()
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if(WANT_ZLIB AND NOT USE_ZLIB)
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set(CMAKE_C_FLAGS_RELEASE_OLD "${CMAKE_C_FLAGS_RELEASE}")
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set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-lto")
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add_subdirectory(${CMAKE_SOURCE_DIR}/src/third-party/zlib zlib)
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set_property(TARGET zlibstatic PROPERTY INCLUDE_DIRECTORIES ${CMAKE_BINARY_DIR}/zlib;${CMAKE_SOURCE_DIR}/src/third-party/zlib)
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set_property(TARGET zlib PROPERTY EXCLUDE_FROM_ALL ON)
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set_property(TARGET example PROPERTY EXCLUDE_FROM_ALL ON)
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set_property(TARGET minigzip PROPERTY EXCLUDE_FROM_ALL ON)
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set(ZLIB_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/src/third-party/zlib ${CMAKE_BINARY_DIR}/zlib)
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set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE_OLD}")
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list(APPEND DEPENDENCY_LIB zlibstatic)
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set(USE_ZLIB ON)
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endif()
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if(USE_ZLIB)
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list(APPEND FEATURES ZLIB)
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include_directories(AFTER ${ZLIB_INCLUDE_DIRS})
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@ -0,0 +1,249 @@
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cmake_minimum_required(VERSION 2.4.4)
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set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
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project(zlib C)
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set(VERSION "1.2.8")
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option(ASM686 "Enable building i686 assembly implementation")
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option(AMD64 "Enable building amd64 assembly implementation")
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set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
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set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
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set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
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set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
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set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
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include(CheckTypeSize)
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include(CheckFunctionExists)
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include(CheckIncludeFile)
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include(CheckCSourceCompiles)
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enable_testing()
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check_include_file(sys/types.h HAVE_SYS_TYPES_H)
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check_include_file(stdint.h HAVE_STDINT_H)
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check_include_file(stddef.h HAVE_STDDEF_H)
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#
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# Check to see if we have large file support
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#
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set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
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# We add these other definitions here because CheckTypeSize.cmake
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# in CMake 2.4.x does not automatically do so and we want
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# compatibility with CMake 2.4.x.
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if(HAVE_SYS_TYPES_H)
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
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endif()
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if(HAVE_STDINT_H)
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
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endif()
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if(HAVE_STDDEF_H)
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list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
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endif()
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check_type_size(off64_t OFF64_T)
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if(HAVE_OFF64_T)
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add_definitions(-D_LARGEFILE64_SOURCE=1)
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endif()
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set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
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#
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# Check for fseeko
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#
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check_function_exists(fseeko HAVE_FSEEKO)
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if(NOT HAVE_FSEEKO)
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add_definitions(-DNO_FSEEKO)
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endif()
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#
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# Check for unistd.h
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#
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check_include_file(unistd.h Z_HAVE_UNISTD_H)
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if(MSVC)
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set(CMAKE_DEBUG_POSTFIX "d")
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add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
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add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
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include_directories(${CMAKE_CURRENT_SOURCE_DIR})
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endif()
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if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
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# If we're doing an out of source build and the user has a zconf.h
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# in their source tree...
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if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
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message(STATUS "Renaming")
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message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h")
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message(STATUS "to 'zconf.h.included' because this file is included with zlib")
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message(STATUS "but CMake generates it automatically in the build directory.")
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file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included)
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endif()
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endif()
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set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
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configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
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${ZLIB_PC} @ONLY)
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configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
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${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
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include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
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#============================================================================
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# zlib
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#============================================================================
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set(ZLIB_PUBLIC_HDRS
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${CMAKE_CURRENT_BINARY_DIR}/zconf.h
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zlib.h
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)
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set(ZLIB_PRIVATE_HDRS
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crc32.h
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deflate.h
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gzguts.h
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inffast.h
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inffixed.h
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inflate.h
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inftrees.h
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trees.h
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zutil.h
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)
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set(ZLIB_SRCS
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adler32.c
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compress.c
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crc32.c
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deflate.c
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gzclose.c
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gzlib.c
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gzread.c
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gzwrite.c
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inflate.c
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infback.c
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inftrees.c
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inffast.c
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trees.c
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uncompr.c
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zutil.c
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)
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if(NOT MINGW)
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set(ZLIB_DLL_SRCS
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win32/zlib1.rc # If present will override custom build rule below.
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)
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endif()
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if(CMAKE_COMPILER_IS_GNUCC)
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if(ASM686)
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set(ZLIB_ASMS contrib/asm686/match.S)
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elseif (AMD64)
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set(ZLIB_ASMS contrib/amd64/amd64-match.S)
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endif ()
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if(ZLIB_ASMS)
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add_definitions(-DASMV)
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set_source_files_properties(${ZLIB_ASMS} PROPERTIES LANGUAGE C COMPILE_FLAGS -DNO_UNDERLINE)
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endif()
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endif()
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if(MSVC)
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if(ASM686)
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ENABLE_LANGUAGE(ASM_MASM)
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set(ZLIB_ASMS
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contrib/masmx86/inffas32.asm
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contrib/masmx86/match686.asm
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)
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elseif (AMD64)
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ENABLE_LANGUAGE(ASM_MASM)
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set(ZLIB_ASMS
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contrib/masmx64/gvmat64.asm
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contrib/masmx64/inffasx64.asm
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)
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endif()
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if(ZLIB_ASMS)
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add_definitions(-DASMV -DASMINF)
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endif()
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endif()
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# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
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file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
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string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
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"\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
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if(MINGW)
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# This gets us DLL resource information when compiling on MinGW.
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if(NOT CMAKE_RC_COMPILER)
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set(CMAKE_RC_COMPILER windres.exe)
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endif()
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add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
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COMMAND ${CMAKE_RC_COMPILER}
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-D GCC_WINDRES
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-I ${CMAKE_CURRENT_SOURCE_DIR}
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-I ${CMAKE_CURRENT_BINARY_DIR}
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-o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
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-i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
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set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
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endif(MINGW)
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add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
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add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
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set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
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set_target_properties(zlib PROPERTIES SOVERSION 1)
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if(NOT CYGWIN)
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# This property causes shared libraries on Linux to have the full version
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# encoded into their final filename. We disable this on Cygwin because
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# it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
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# seems to be the default.
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#
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# This has no effect with MSVC, on that platform the version info for
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# the DLL comes from the resource file win32/zlib1.rc
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set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
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endif()
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if(UNIX)
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# On unix-like platforms the library is almost always called libz
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set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
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if(NOT APPLE)
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set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
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endif()
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elseif(BUILD_SHARED_LIBS AND WIN32)
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# Creates zlib1.dll when building shared library version
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set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
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endif()
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if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
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install(TARGETS zlib zlibstatic
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RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
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ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
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LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
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endif()
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if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
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install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
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endif()
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if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
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install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
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endif()
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if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
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install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
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endif()
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#============================================================================
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# Example binaries
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#============================================================================
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add_executable(example test/example.c)
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target_link_libraries(example zlib)
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add_test(example example)
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add_executable(minigzip test/minigzip.c)
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target_link_libraries(minigzip zlib)
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if(HAVE_OFF64_T)
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add_executable(example64 test/example.c)
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target_link_libraries(example64 zlib)
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set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
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add_test(example64 example64)
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add_executable(minigzip64 test/minigzip.c)
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target_link_libraries(minigzip64 zlib)
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set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
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endif()
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,368 @@
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Frequently Asked Questions about zlib
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If your question is not there, please check the zlib home page
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http://zlib.net/ which may have more recent information.
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The lastest zlib FAQ is at http://zlib.net/zlib_faq.html
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1. Is zlib Y2K-compliant?
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Yes. zlib doesn't handle dates.
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2. Where can I get a Windows DLL version?
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The zlib sources can be compiled without change to produce a DLL. See the
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file win32/DLL_FAQ.txt in the zlib distribution. Pointers to the
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precompiled DLL are found in the zlib web site at http://zlib.net/ .
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3. Where can I get a Visual Basic interface to zlib?
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See
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* http://marknelson.us/1997/01/01/zlib-engine/
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* win32/DLL_FAQ.txt in the zlib distribution
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4. compress() returns Z_BUF_ERROR.
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Make sure that before the call of compress(), the length of the compressed
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buffer is equal to the available size of the compressed buffer and not
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zero. For Visual Basic, check that this parameter is passed by reference
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("as any"), not by value ("as long").
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5. deflate() or inflate() returns Z_BUF_ERROR.
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Before making the call, make sure that avail_in and avail_out are not zero.
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When setting the parameter flush equal to Z_FINISH, also make sure that
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avail_out is big enough to allow processing all pending input. Note that a
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Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be
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made with more input or output space. A Z_BUF_ERROR may in fact be
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unavoidable depending on how the functions are used, since it is not
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possible to tell whether or not there is more output pending when
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strm.avail_out returns with zero. See http://zlib.net/zlib_how.html for a
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heavily annotated example.
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6. Where's the zlib documentation (man pages, etc.)?
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It's in zlib.h . Examples of zlib usage are in the files test/example.c
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and test/minigzip.c, with more in examples/ .
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7. Why don't you use GNU autoconf or libtool or ...?
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Because we would like to keep zlib as a very small and simple package.
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zlib is rather portable and doesn't need much configuration.
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8. I found a bug in zlib.
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Most of the time, such problems are due to an incorrect usage of zlib.
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Please try to reproduce the problem with a small program and send the
|
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corresponding source to us at zlib@gzip.org . Do not send multi-megabyte
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data files without prior agreement.
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9. Why do I get "undefined reference to gzputc"?
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If "make test" produces something like
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example.o(.text+0x154): undefined reference to `gzputc'
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check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
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/usr/X11R6/lib. Remove any old versions, then do "make install".
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10. I need a Delphi interface to zlib.
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See the contrib/delphi directory in the zlib distribution.
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11. Can zlib handle .zip archives?
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Not by itself, no. See the directory contrib/minizip in the zlib
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distribution.
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12. Can zlib handle .Z files?
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No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
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the code of uncompress on your own.
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13. How can I make a Unix shared library?
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By default a shared (and a static) library is built for Unix. So:
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make distclean
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./configure
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make
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14. How do I install a shared zlib library on Unix?
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After the above, then:
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make install
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However, many flavors of Unix come with a shared zlib already installed.
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Before going to the trouble of compiling a shared version of zlib and
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trying to install it, you may want to check if it's already there! If you
|
||||
can #include <zlib.h>, it's there. The -lz option will probably link to
|
||||
it. You can check the version at the top of zlib.h or with the
|
||||
ZLIB_VERSION symbol defined in zlib.h .
|
||||
|
||||
15. I have a question about OttoPDF.
|
||||
|
||||
We are not the authors of OttoPDF. The real author is on the OttoPDF web
|
||||
site: Joel Hainley, jhainley@myndkryme.com.
|
||||
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||||
16. Can zlib decode Flate data in an Adobe PDF file?
|
||||
|
||||
Yes. See http://www.pdflib.com/ . To modify PDF forms, see
|
||||
http://sourceforge.net/projects/acroformtool/ .
|
||||
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||||
17. Why am I getting this "register_frame_info not found" error on Solaris?
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||||
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After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
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generates an error such as:
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ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
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symbol __register_frame_info: referenced symbol not found
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The symbol __register_frame_info is not part of zlib, it is generated by
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||||
the C compiler (cc or gcc). You must recompile applications using zlib
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which have this problem. This problem is specific to Solaris. See
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||||
http://www.sunfreeware.com for Solaris versions of zlib and applications
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||||
using zlib.
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18. Why does gzip give an error on a file I make with compress/deflate?
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||||
The compress and deflate functions produce data in the zlib format, which
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||||
is different and incompatible with the gzip format. The gz* functions in
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zlib on the other hand use the gzip format. Both the zlib and gzip formats
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use the same compressed data format internally, but have different headers
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and trailers around the compressed data.
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19. Ok, so why are there two different formats?
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The gzip format was designed to retain the directory information about a
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single file, such as the name and last modification date. The zlib format
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on the other hand was designed for in-memory and communication channel
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||||
applications, and has a much more compact header and trailer and uses a
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||||
faster integrity check than gzip.
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20. Well that's nice, but how do I make a gzip file in memory?
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|
||||
You can request that deflate write the gzip format instead of the zlib
|
||||
format using deflateInit2(). You can also request that inflate decode the
|
||||
gzip format using inflateInit2(). Read zlib.h for more details.
|
||||
|
||||
21. Is zlib thread-safe?
|
||||
|
||||
Yes. However any library routines that zlib uses and any application-
|
||||
provided memory allocation routines must also be thread-safe. zlib's gz*
|
||||
functions use stdio library routines, and most of zlib's functions use the
|
||||
library memory allocation routines by default. zlib's *Init* functions
|
||||
allow for the application to provide custom memory allocation routines.
|
||||
|
||||
Of course, you should only operate on any given zlib or gzip stream from a
|
||||
single thread at a time.
|
||||
|
||||
22. Can I use zlib in my commercial application?
|
||||
|
||||
Yes. Please read the license in zlib.h.
|
||||
|
||||
23. Is zlib under the GNU license?
|
||||
|
||||
No. Please read the license in zlib.h.
|
||||
|
||||
24. The license says that altered source versions must be "plainly marked". So
|
||||
what exactly do I need to do to meet that requirement?
|
||||
|
||||
You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In
|
||||
particular, the final version number needs to be changed to "f", and an
|
||||
identification string should be appended to ZLIB_VERSION. Version numbers
|
||||
x.x.x.f are reserved for modifications to zlib by others than the zlib
|
||||
maintainers. For example, if the version of the base zlib you are altering
|
||||
is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
|
||||
ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also
|
||||
update the version strings in deflate.c and inftrees.c.
|
||||
|
||||
For altered source distributions, you should also note the origin and
|
||||
nature of the changes in zlib.h, as well as in ChangeLog and README, along
|
||||
with the dates of the alterations. The origin should include at least your
|
||||
name (or your company's name), and an email address to contact for help or
|
||||
issues with the library.
|
||||
|
||||
Note that distributing a compiled zlib library along with zlib.h and
|
||||
zconf.h is also a source distribution, and so you should change
|
||||
ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
|
||||
in zlib.h as you would for a full source distribution.
|
||||
|
||||
25. Will zlib work on a big-endian or little-endian architecture, and can I
|
||||
exchange compressed data between them?
|
||||
|
||||
Yes and yes.
|
||||
|
||||
26. Will zlib work on a 64-bit machine?
|
||||
|
||||
Yes. It has been tested on 64-bit machines, and has no dependence on any
|
||||
data types being limited to 32-bits in length. If you have any
|
||||
difficulties, please provide a complete problem report to zlib@gzip.org
|
||||
|
||||
27. Will zlib decompress data from the PKWare Data Compression Library?
|
||||
|
||||
No. The PKWare DCL uses a completely different compressed data format than
|
||||
does PKZIP and zlib. However, you can look in zlib's contrib/blast
|
||||
directory for a possible solution to your problem.
|
||||
|
||||
28. Can I access data randomly in a compressed stream?
|
||||
|
||||
No, not without some preparation. If when compressing you periodically use
|
||||
Z_FULL_FLUSH, carefully write all the pending data at those points, and
|
||||
keep an index of those locations, then you can start decompression at those
|
||||
points. You have to be careful to not use Z_FULL_FLUSH too often, since it
|
||||
can significantly degrade compression. Alternatively, you can scan a
|
||||
deflate stream once to generate an index, and then use that index for
|
||||
random access. See examples/zran.c .
|
||||
|
||||
29. Does zlib work on MVS, OS/390, CICS, etc.?
|
||||
|
||||
It has in the past, but we have not heard of any recent evidence. There
|
||||
were working ports of zlib 1.1.4 to MVS, but those links no longer work.
|
||||
If you know of recent, successful applications of zlib on these operating
|
||||
systems, please let us know. Thanks.
|
||||
|
||||
30. Is there some simpler, easier to read version of inflate I can look at to
|
||||
understand the deflate format?
|
||||
|
||||
First off, you should read RFC 1951. Second, yes. Look in zlib's
|
||||
contrib/puff directory.
|
||||
|
||||
31. Does zlib infringe on any patents?
|
||||
|
||||
As far as we know, no. In fact, that was originally the whole point behind
|
||||
zlib. Look here for some more information:
|
||||
|
||||
http://www.gzip.org/#faq11
|
||||
|
||||
32. Can zlib work with greater than 4 GB of data?
|
||||
|
||||
Yes. inflate() and deflate() will process any amount of data correctly.
|
||||
Each call of inflate() or deflate() is limited to input and output chunks
|
||||
of the maximum value that can be stored in the compiler's "unsigned int"
|
||||
type, but there is no limit to the number of chunks. Note however that the
|
||||
strm.total_in and strm_total_out counters may be limited to 4 GB. These
|
||||
counters are provided as a convenience and are not used internally by
|
||||
inflate() or deflate(). The application can easily set up its own counters
|
||||
updated after each call of inflate() or deflate() to count beyond 4 GB.
|
||||
compress() and uncompress() may be limited to 4 GB, since they operate in a
|
||||
single call. gzseek() and gztell() may be limited to 4 GB depending on how
|
||||
zlib is compiled. See the zlibCompileFlags() function in zlib.h.
|
||||
|
||||
The word "may" appears several times above since there is a 4 GB limit only
|
||||
if the compiler's "long" type is 32 bits. If the compiler's "long" type is
|
||||
64 bits, then the limit is 16 exabytes.
|
||||
|
||||
33. Does zlib have any security vulnerabilities?
|
||||
|
||||
The only one that we are aware of is potentially in gzprintf(). If zlib is
|
||||
compiled to use sprintf() or vsprintf(), then there is no protection
|
||||
against a buffer overflow of an 8K string space (or other value as set by
|
||||
gzbuffer()), other than the caller of gzprintf() assuring that the output
|
||||
will not exceed 8K. On the other hand, if zlib is compiled to use
|
||||
snprintf() or vsnprintf(), which should normally be the case, then there is
|
||||
no vulnerability. The ./configure script will display warnings if an
|
||||
insecure variation of sprintf() will be used by gzprintf(). Also the
|
||||
zlibCompileFlags() function will return information on what variant of
|
||||
sprintf() is used by gzprintf().
|
||||
|
||||
If you don't have snprintf() or vsnprintf() and would like one, you can
|
||||
find a portable implementation here:
|
||||
|
||||
http://www.ijs.si/software/snprintf/
|
||||
|
||||
Note that you should be using the most recent version of zlib. Versions
|
||||
1.1.3 and before were subject to a double-free vulnerability, and versions
|
||||
1.2.1 and 1.2.2 were subject to an access exception when decompressing
|
||||
invalid compressed data.
|
||||
|
||||
34. Is there a Java version of zlib?
|
||||
|
||||
Probably what you want is to use zlib in Java. zlib is already included
|
||||
as part of the Java SDK in the java.util.zip package. If you really want
|
||||
a version of zlib written in the Java language, look on the zlib home
|
||||
page for links: http://zlib.net/ .
|
||||
|
||||
35. I get this or that compiler or source-code scanner warning when I crank it
|
||||
up to maximally-pedantic. Can't you guys write proper code?
|
||||
|
||||
Many years ago, we gave up attempting to avoid warnings on every compiler
|
||||
in the universe. It just got to be a waste of time, and some compilers
|
||||
were downright silly as well as contradicted each other. So now, we simply
|
||||
make sure that the code always works.
|
||||
|
||||
36. Valgrind (or some similar memory access checker) says that deflate is
|
||||
performing a conditional jump that depends on an uninitialized value.
|
||||
Isn't that a bug?
|
||||
|
||||
No. That is intentional for performance reasons, and the output of deflate
|
||||
is not affected. This only started showing up recently since zlib 1.2.x
|
||||
uses malloc() by default for allocations, whereas earlier versions used
|
||||
calloc(), which zeros out the allocated memory. Even though the code was
|
||||
correct, versions 1.2.4 and later was changed to not stimulate these
|
||||
checkers.
|
||||
|
||||
37. Will zlib read the (insert any ancient or arcane format here) compressed
|
||||
data format?
|
||||
|
||||
Probably not. Look in the comp.compression FAQ for pointers to various
|
||||
formats and associated software.
|
||||
|
||||
38. How can I encrypt/decrypt zip files with zlib?
|
||||
|
||||
zlib doesn't support encryption. The original PKZIP encryption is very
|
||||
weak and can be broken with freely available programs. To get strong
|
||||
encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib
|
||||
compression. For PKZIP compatible "encryption", look at
|
||||
http://www.info-zip.org/
|
||||
|
||||
39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
|
||||
|
||||
"gzip" is the gzip format, and "deflate" is the zlib format. They should
|
||||
probably have called the second one "zlib" instead to avoid confusion with
|
||||
the raw deflate compressed data format. While the HTTP 1.1 RFC 2616
|
||||
correctly points to the zlib specification in RFC 1950 for the "deflate"
|
||||
transfer encoding, there have been reports of servers and browsers that
|
||||
incorrectly produce or expect raw deflate data per the deflate
|
||||
specification in RFC 1951, most notably Microsoft. So even though the
|
||||
"deflate" transfer encoding using the zlib format would be the more
|
||||
efficient approach (and in fact exactly what the zlib format was designed
|
||||
for), using the "gzip" transfer encoding is probably more reliable due to
|
||||
an unfortunate choice of name on the part of the HTTP 1.1 authors.
|
||||
|
||||
Bottom line: use the gzip format for HTTP 1.1 encoding.
|
||||
|
||||
40. Does zlib support the new "Deflate64" format introduced by PKWare?
|
||||
|
||||
No. PKWare has apparently decided to keep that format proprietary, since
|
||||
they have not documented it as they have previous compression formats. In
|
||||
any case, the compression improvements are so modest compared to other more
|
||||
modern approaches, that it's not worth the effort to implement.
|
||||
|
||||
41. I'm having a problem with the zip functions in zlib, can you help?
|
||||
|
||||
There are no zip functions in zlib. You are probably using minizip by
|
||||
Giles Vollant, which is found in the contrib directory of zlib. It is not
|
||||
part of zlib. In fact none of the stuff in contrib is part of zlib. The
|
||||
files in there are not supported by the zlib authors. You need to contact
|
||||
the authors of the respective contribution for help.
|
||||
|
||||
42. The match.asm code in contrib is under the GNU General Public License.
|
||||
Since it's part of zlib, doesn't that mean that all of zlib falls under the
|
||||
GNU GPL?
|
||||
|
||||
No. The files in contrib are not part of zlib. They were contributed by
|
||||
other authors and are provided as a convenience to the user within the zlib
|
||||
distribution. Each item in contrib has its own license.
|
||||
|
||||
43. Is zlib subject to export controls? What is its ECCN?
|
||||
|
||||
zlib is not subject to export controls, and so is classified as EAR99.
|
||||
|
||||
44. Can you please sign these lengthy legal documents and fax them back to us
|
||||
so that we can use your software in our product?
|
||||
|
||||
No. Go away. Shoo.
|
||||
|
|
@ -0,0 +1,68 @@
|
|||
CMakeLists.txt cmake build file
|
||||
ChangeLog history of changes
|
||||
FAQ Frequently Asked Questions about zlib
|
||||
INDEX this file
|
||||
Makefile dummy Makefile that tells you to ./configure
|
||||
Makefile.in template for Unix Makefile
|
||||
README guess what
|
||||
configure configure script for Unix
|
||||
make_vms.com makefile for VMS
|
||||
test/example.c zlib usages examples for build testing
|
||||
test/minigzip.c minimal gzip-like functionality for build testing
|
||||
test/infcover.c inf*.c code coverage for build coverage testing
|
||||
treebuild.xml XML description of source file dependencies
|
||||
zconf.h.cmakein zconf.h template for cmake
|
||||
zconf.h.in zconf.h template for configure
|
||||
zlib.3 Man page for zlib
|
||||
zlib.3.pdf Man page in PDF format
|
||||
zlib.map Linux symbol information
|
||||
zlib.pc.in Template for pkg-config descriptor
|
||||
zlib.pc.cmakein zlib.pc template for cmake
|
||||
zlib2ansi perl script to convert source files for C++ compilation
|
||||
|
||||
amiga/ makefiles for Amiga SAS C
|
||||
as400/ makefiles for AS/400
|
||||
doc/ documentation for formats and algorithms
|
||||
msdos/ makefiles for MSDOS
|
||||
nintendods/ makefile for Nintendo DS
|
||||
old/ makefiles for various architectures and zlib documentation
|
||||
files that have not yet been updated for zlib 1.2.x
|
||||
qnx/ makefiles for QNX
|
||||
watcom/ makefiles for OpenWatcom
|
||||
win32/ makefiles for Windows
|
||||
|
||||
zlib public header files (required for library use):
|
||||
zconf.h
|
||||
zlib.h
|
||||
|
||||
private source files used to build the zlib library:
|
||||
adler32.c
|
||||
compress.c
|
||||
crc32.c
|
||||
crc32.h
|
||||
deflate.c
|
||||
deflate.h
|
||||
gzclose.c
|
||||
gzguts.h
|
||||
gzlib.c
|
||||
gzread.c
|
||||
gzwrite.c
|
||||
infback.c
|
||||
inffast.c
|
||||
inffast.h
|
||||
inffixed.h
|
||||
inflate.c
|
||||
inflate.h
|
||||
inftrees.c
|
||||
inftrees.h
|
||||
trees.c
|
||||
trees.h
|
||||
uncompr.c
|
||||
zutil.c
|
||||
zutil.h
|
||||
|
||||
source files for sample programs
|
||||
See examples/README.examples
|
||||
|
||||
unsupported contributions by third parties
|
||||
See contrib/README.contrib
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
all:
|
||||
-@echo "Please use ./configure first. Thank you."
|
||||
|
||||
distclean:
|
||||
make -f Makefile.in distclean
|
||||
|
|
@ -0,0 +1,288 @@
|
|||
# Makefile for zlib
|
||||
# Copyright (C) 1995-2013 Jean-loup Gailly, Mark Adler
|
||||
# For conditions of distribution and use, see copyright notice in zlib.h
|
||||
|
||||
# To compile and test, type:
|
||||
# ./configure; make test
|
||||
# Normally configure builds both a static and a shared library.
|
||||
# If you want to build just a static library, use: ./configure --static
|
||||
|
||||
# To use the asm code, type:
|
||||
# cp contrib/asm?86/match.S ./match.S
|
||||
# make LOC=-DASMV OBJA=match.o
|
||||
|
||||
# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
|
||||
# make install
|
||||
# To install in $HOME instead of /usr/local, use:
|
||||
# make install prefix=$HOME
|
||||
|
||||
CC=cc
|
||||
|
||||
CFLAGS=-O
|
||||
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
|
||||
#CFLAGS=-g -DDEBUG
|
||||
#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
|
||||
# -Wstrict-prototypes -Wmissing-prototypes
|
||||
|
||||
SFLAGS=-O
|
||||
LDFLAGS=
|
||||
TEST_LDFLAGS=-L. libz.a
|
||||
LDSHARED=$(CC)
|
||||
CPP=$(CC) -E
|
||||
|
||||
STATICLIB=libz.a
|
||||
SHAREDLIB=libz.so
|
||||
SHAREDLIBV=libz.so.1.2.8
|
||||
SHAREDLIBM=libz.so.1
|
||||
LIBS=$(STATICLIB) $(SHAREDLIBV)
|
||||
|
||||
AR=ar
|
||||
ARFLAGS=rc
|
||||
RANLIB=ranlib
|
||||
LDCONFIG=ldconfig
|
||||
LDSHAREDLIBC=-lc
|
||||
TAR=tar
|
||||
SHELL=/bin/sh
|
||||
EXE=
|
||||
|
||||
prefix = /usr/local
|
||||
exec_prefix = ${prefix}
|
||||
libdir = ${exec_prefix}/lib
|
||||
sharedlibdir = ${libdir}
|
||||
includedir = ${prefix}/include
|
||||
mandir = ${prefix}/share/man
|
||||
man3dir = ${mandir}/man3
|
||||
pkgconfigdir = ${libdir}/pkgconfig
|
||||
|
||||
OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o
|
||||
OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o
|
||||
OBJC = $(OBJZ) $(OBJG)
|
||||
|
||||
PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo
|
||||
PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo
|
||||
PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG)
|
||||
|
||||
# to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo
|
||||
OBJA =
|
||||
PIC_OBJA =
|
||||
|
||||
OBJS = $(OBJC) $(OBJA)
|
||||
|
||||
PIC_OBJS = $(PIC_OBJC) $(PIC_OBJA)
|
||||
|
||||
all: static shared
|
||||
|
||||
static: example$(EXE) minigzip$(EXE)
|
||||
|
||||
shared: examplesh$(EXE) minigzipsh$(EXE)
|
||||
|
||||
all64: example64$(EXE) minigzip64$(EXE)
|
||||
|
||||
check: test
|
||||
|
||||
test: all teststatic testshared
|
||||
|
||||
teststatic: static
|
||||
@TMPST=tmpst_$$; \
|
||||
if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \
|
||||
echo ' *** zlib test OK ***'; \
|
||||
else \
|
||||
echo ' *** zlib test FAILED ***'; false; \
|
||||
fi; \
|
||||
rm -f $$TMPST
|
||||
|
||||
testshared: shared
|
||||
@LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
|
||||
LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \
|
||||
DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
|
||||
SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
|
||||
TMPSH=tmpsh_$$; \
|
||||
if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \
|
||||
echo ' *** zlib shared test OK ***'; \
|
||||
else \
|
||||
echo ' *** zlib shared test FAILED ***'; false; \
|
||||
fi; \
|
||||
rm -f $$TMPSH
|
||||
|
||||
test64: all64
|
||||
@TMP64=tmp64_$$; \
|
||||
if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \
|
||||
echo ' *** zlib 64-bit test OK ***'; \
|
||||
else \
|
||||
echo ' *** zlib 64-bit test FAILED ***'; false; \
|
||||
fi; \
|
||||
rm -f $$TMP64
|
||||
|
||||
infcover.o: test/infcover.c zlib.h zconf.h
|
||||
$(CC) $(CFLAGS) -I. -c -o $@ test/infcover.c
|
||||
|
||||
infcover: infcover.o libz.a
|
||||
$(CC) $(CFLAGS) -o $@ infcover.o libz.a
|
||||
|
||||
cover: infcover
|
||||
rm -f *.gcda
|
||||
./infcover
|
||||
gcov inf*.c
|
||||
|
||||
libz.a: $(OBJS)
|
||||
$(AR) $(ARFLAGS) $@ $(OBJS)
|
||||
-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
|
||||
|
||||
match.o: match.S
|
||||
$(CPP) match.S > _match.s
|
||||
$(CC) -c _match.s
|
||||
mv _match.o match.o
|
||||
rm -f _match.s
|
||||
|
||||
match.lo: match.S
|
||||
$(CPP) match.S > _match.s
|
||||
$(CC) -c -fPIC _match.s
|
||||
mv _match.o match.lo
|
||||
rm -f _match.s
|
||||
|
||||
example.o: test/example.c zlib.h zconf.h
|
||||
$(CC) $(CFLAGS) -I. -c -o $@ test/example.c
|
||||
|
||||
minigzip.o: test/minigzip.c zlib.h zconf.h
|
||||
$(CC) $(CFLAGS) -I. -c -o $@ test/minigzip.c
|
||||
|
||||
example64.o: test/example.c zlib.h zconf.h
|
||||
$(CC) $(CFLAGS) -I. -D_FILE_OFFSET_BITS=64 -c -o $@ test/example.c
|
||||
|
||||
minigzip64.o: test/minigzip.c zlib.h zconf.h
|
||||
$(CC) $(CFLAGS) -I. -D_FILE_OFFSET_BITS=64 -c -o $@ test/minigzip.c
|
||||
|
||||
.SUFFIXES: .lo
|
||||
|
||||
.c.lo:
|
||||
-@mkdir objs 2>/dev/null || test -d objs
|
||||
$(CC) $(SFLAGS) -DPIC -c -o objs/$*.o $<
|
||||
-@mv objs/$*.o $@
|
||||
|
||||
placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a
|
||||
$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
|
||||
rm -f $(SHAREDLIB) $(SHAREDLIBM)
|
||||
ln -s $@ $(SHAREDLIB)
|
||||
ln -s $@ $(SHAREDLIBM)
|
||||
-@rmdir objs
|
||||
|
||||
example$(EXE): example.o $(STATICLIB)
|
||||
$(CC) $(CFLAGS) -o $@ example.o $(TEST_LDFLAGS)
|
||||
|
||||
minigzip$(EXE): minigzip.o $(STATICLIB)
|
||||
$(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS)
|
||||
|
||||
examplesh$(EXE): example.o $(SHAREDLIBV)
|
||||
$(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV)
|
||||
|
||||
minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
|
||||
$(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV)
|
||||
|
||||
example64$(EXE): example64.o $(STATICLIB)
|
||||
$(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS)
|
||||
|
||||
minigzip64$(EXE): minigzip64.o $(STATICLIB)
|
||||
$(CC) $(CFLAGS) -o $@ minigzip64.o $(TEST_LDFLAGS)
|
||||
|
||||
install-libs: $(LIBS)
|
||||
-@if [ ! -d $(DESTDIR)$(exec_prefix) ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi
|
||||
-@if [ ! -d $(DESTDIR)$(libdir) ]; then mkdir -p $(DESTDIR)$(libdir); fi
|
||||
-@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi
|
||||
-@if [ ! -d $(DESTDIR)$(man3dir) ]; then mkdir -p $(DESTDIR)$(man3dir); fi
|
||||
-@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi
|
||||
cp $(STATICLIB) $(DESTDIR)$(libdir)
|
||||
chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB)
|
||||
-@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1
|
||||
-@if test -n "$(SHAREDLIBV)"; then \
|
||||
cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \
|
||||
echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \
|
||||
chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
|
||||
echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \
|
||||
rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
|
||||
ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
|
||||
ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
|
||||
($(LDCONFIG) || true) >/dev/null 2>&1; \
|
||||
fi
|
||||
cp zlib.3 $(DESTDIR)$(man3dir)
|
||||
chmod 644 $(DESTDIR)$(man3dir)/zlib.3
|
||||
cp zlib.pc $(DESTDIR)$(pkgconfigdir)
|
||||
chmod 644 $(DESTDIR)$(pkgconfigdir)/zlib.pc
|
||||
# The ranlib in install is needed on NeXTSTEP which checks file times
|
||||
# ldconfig is for Linux
|
||||
|
||||
install: install-libs
|
||||
-@if [ ! -d $(DESTDIR)$(includedir) ]; then mkdir -p $(DESTDIR)$(includedir); fi
|
||||
cp zlib.h zconf.h $(DESTDIR)$(includedir)
|
||||
chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
|
||||
|
||||
uninstall:
|
||||
cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h
|
||||
cd $(DESTDIR)$(libdir) && rm -f libz.a; \
|
||||
if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
|
||||
rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
|
||||
fi
|
||||
cd $(DESTDIR)$(man3dir) && rm -f zlib.3
|
||||
cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc
|
||||
|
||||
docs: zlib.3.pdf
|
||||
|
||||
zlib.3.pdf: zlib.3
|
||||
groff -mandoc -f H -T ps zlib.3 | ps2pdf - zlib.3.pdf
|
||||
|
||||
zconf.h.cmakein: zconf.h.in
|
||||
-@ TEMPFILE=zconfh_$$; \
|
||||
echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\
|
||||
sed -f $$TEMPFILE zconf.h.in > zconf.h.cmakein &&\
|
||||
touch -r zconf.h.in zconf.h.cmakein &&\
|
||||
rm $$TEMPFILE
|
||||
|
||||
zconf: zconf.h.in
|
||||
cp -p zconf.h.in zconf.h
|
||||
|
||||
mostlyclean: clean
|
||||
clean:
|
||||
rm -f *.o *.lo *~ \
|
||||
example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \
|
||||
example64$(EXE) minigzip64$(EXE) \
|
||||
infcover \
|
||||
libz.* foo.gz so_locations \
|
||||
_match.s maketree contrib/infback9/*.o
|
||||
rm -rf objs
|
||||
rm -f *.gcda *.gcno *.gcov
|
||||
rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov
|
||||
|
||||
maintainer-clean: distclean
|
||||
distclean: clean zconf zconf.h.cmakein docs
|
||||
rm -f Makefile zlib.pc configure.log
|
||||
-@rm -f .DS_Store
|
||||
-@printf 'all:\n\t-@echo "Please use ./configure first. Thank you."\n' > Makefile
|
||||
-@printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile
|
||||
-@touch -r Makefile.in Makefile
|
||||
|
||||
tags:
|
||||
etags *.[ch]
|
||||
|
||||
depend:
|
||||
makedepend -- $(CFLAGS) -- *.[ch]
|
||||
|
||||
# DO NOT DELETE THIS LINE -- make depend depends on it.
|
||||
|
||||
adler32.o zutil.o: zutil.h zlib.h zconf.h
|
||||
gzclose.o gzlib.o gzread.o gzwrite.o: zlib.h zconf.h gzguts.h
|
||||
compress.o example.o minigzip.o uncompr.o: zlib.h zconf.h
|
||||
crc32.o: zutil.h zlib.h zconf.h crc32.h
|
||||
deflate.o: deflate.h zutil.h zlib.h zconf.h
|
||||
infback.o inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h inffixed.h
|
||||
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
|
||||
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
|
||||
|
||||
adler32.lo zutil.lo: zutil.h zlib.h zconf.h
|
||||
gzclose.lo gzlib.lo gzread.lo gzwrite.lo: zlib.h zconf.h gzguts.h
|
||||
compress.lo example.lo minigzip.lo uncompr.lo: zlib.h zconf.h
|
||||
crc32.lo: zutil.h zlib.h zconf.h crc32.h
|
||||
deflate.lo: deflate.h zutil.h zlib.h zconf.h
|
||||
infback.lo inflate.lo: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h inffixed.h
|
||||
inffast.lo: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
inftrees.lo: zutil.h zlib.h zconf.h inftrees.h
|
||||
trees.lo: deflate.h zutil.h zlib.h zconf.h trees.h
|
||||
|
|
@ -0,0 +1,115 @@
|
|||
ZLIB DATA COMPRESSION LIBRARY
|
||||
|
||||
zlib 1.2.8 is a general purpose data compression library. All the code is
|
||||
thread safe. The data format used by the zlib library is described by RFCs
|
||||
(Request for Comments) 1950 to 1952 in the files
|
||||
http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
|
||||
rfc1952 (gzip format).
|
||||
|
||||
All functions of the compression library are documented in the file zlib.h
|
||||
(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
|
||||
of the library is given in the file test/example.c which also tests that
|
||||
the library is working correctly. Another example is given in the file
|
||||
test/minigzip.c. The compression library itself is composed of all source
|
||||
files in the root directory.
|
||||
|
||||
To compile all files and run the test program, follow the instructions given at
|
||||
the top of Makefile.in. In short "./configure; make test", and if that goes
|
||||
well, "make install" should work for most flavors of Unix. For Windows, use
|
||||
one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use
|
||||
make_vms.com.
|
||||
|
||||
Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
|
||||
<info@winimage.com> for the Windows DLL version. The zlib home page is
|
||||
http://zlib.net/ . Before reporting a problem, please check this site to
|
||||
verify that you have the latest version of zlib; otherwise get the latest
|
||||
version and check whether the problem still exists or not.
|
||||
|
||||
PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.
|
||||
|
||||
Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
|
||||
issue of Dr. Dobb's Journal; a copy of the article is available at
|
||||
http://marknelson.us/1997/01/01/zlib-engine/ .
|
||||
|
||||
The changes made in version 1.2.8 are documented in the file ChangeLog.
|
||||
|
||||
Unsupported third party contributions are provided in directory contrib/ .
|
||||
|
||||
zlib is available in Java using the java.util.zip package, documented at
|
||||
http://java.sun.com/developer/technicalArticles/Programming/compression/ .
|
||||
|
||||
A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available
|
||||
at CPAN (Comprehensive Perl Archive Network) sites, including
|
||||
http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .
|
||||
|
||||
A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
|
||||
available in Python 1.5 and later versions, see
|
||||
http://docs.python.org/library/zlib.html .
|
||||
|
||||
zlib is built into tcl: http://wiki.tcl.tk/4610 .
|
||||
|
||||
An experimental package to read and write files in .zip format, written on top
|
||||
of zlib by Gilles Vollant <info@winimage.com>, is available in the
|
||||
contrib/minizip directory of zlib.
|
||||
|
||||
|
||||
Notes for some targets:
|
||||
|
||||
- For Windows DLL versions, please see win32/DLL_FAQ.txt
|
||||
|
||||
- For 64-bit Irix, deflate.c must be compiled without any optimization. With
|
||||
-O, one libpng test fails. The test works in 32 bit mode (with the -n32
|
||||
compiler flag). The compiler bug has been reported to SGI.
|
||||
|
||||
- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
|
||||
when compiled with cc.
|
||||
|
||||
- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
|
||||
necessary to get gzprintf working correctly. This is done by configure.
|
||||
|
||||
- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
|
||||
other compilers. Use "make test" to check your compiler.
|
||||
|
||||
- gzdopen is not supported on RISCOS or BEOS.
|
||||
|
||||
- For PalmOs, see http://palmzlib.sourceforge.net/
|
||||
|
||||
|
||||
Acknowledgments:
|
||||
|
||||
The deflate format used by zlib was defined by Phil Katz. The deflate and
|
||||
zlib specifications were written by L. Peter Deutsch. Thanks to all the
|
||||
people who reported problems and suggested various improvements in zlib; they
|
||||
are too numerous to cite here.
|
||||
|
||||
Copyright notice:
|
||||
|
||||
(C) 1995-2013 Jean-loup Gailly and Mark Adler
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
|
||||
Jean-loup Gailly Mark Adler
|
||||
jloup@gzip.org madler@alumni.caltech.edu
|
||||
|
||||
If you use the zlib library in a product, we would appreciate *not* receiving
|
||||
lengthy legal documents to sign. The sources are provided for free but without
|
||||
warranty of any kind. The library has been entirely written by Jean-loup
|
||||
Gailly and Mark Adler; it does not include third-party code.
|
||||
|
||||
If you redistribute modified sources, we would appreciate that you include in
|
||||
the file ChangeLog history information documenting your changes. Please read
|
||||
the FAQ for more information on the distribution of modified source versions.
|
||||
|
|
@ -0,0 +1,179 @@
|
|||
/* adler32.c -- compute the Adler-32 checksum of a data stream
|
||||
* Copyright (C) 1995-2011 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#include "zutil.h"
|
||||
|
||||
#define local static
|
||||
|
||||
local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
|
||||
|
||||
#define BASE 65521 /* largest prime smaller than 65536 */
|
||||
#define NMAX 5552
|
||||
/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
|
||||
|
||||
#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
|
||||
#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
|
||||
#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
|
||||
#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
|
||||
#define DO16(buf) DO8(buf,0); DO8(buf,8);
|
||||
|
||||
/* use NO_DIVIDE if your processor does not do division in hardware --
|
||||
try it both ways to see which is faster */
|
||||
#ifdef NO_DIVIDE
|
||||
/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
|
||||
(thank you to John Reiser for pointing this out) */
|
||||
# define CHOP(a) \
|
||||
do { \
|
||||
unsigned long tmp = a >> 16; \
|
||||
a &= 0xffffUL; \
|
||||
a += (tmp << 4) - tmp; \
|
||||
} while (0)
|
||||
# define MOD28(a) \
|
||||
do { \
|
||||
CHOP(a); \
|
||||
if (a >= BASE) a -= BASE; \
|
||||
} while (0)
|
||||
# define MOD(a) \
|
||||
do { \
|
||||
CHOP(a); \
|
||||
MOD28(a); \
|
||||
} while (0)
|
||||
# define MOD63(a) \
|
||||
do { /* this assumes a is not negative */ \
|
||||
z_off64_t tmp = a >> 32; \
|
||||
a &= 0xffffffffL; \
|
||||
a += (tmp << 8) - (tmp << 5) + tmp; \
|
||||
tmp = a >> 16; \
|
||||
a &= 0xffffL; \
|
||||
a += (tmp << 4) - tmp; \
|
||||
tmp = a >> 16; \
|
||||
a &= 0xffffL; \
|
||||
a += (tmp << 4) - tmp; \
|
||||
if (a >= BASE) a -= BASE; \
|
||||
} while (0)
|
||||
#else
|
||||
# define MOD(a) a %= BASE
|
||||
# define MOD28(a) a %= BASE
|
||||
# define MOD63(a) a %= BASE
|
||||
#endif
|
||||
|
||||
/* ========================================================================= */
|
||||
uLong ZEXPORT adler32(adler, buf, len)
|
||||
uLong adler;
|
||||
const Bytef *buf;
|
||||
uInt len;
|
||||
{
|
||||
unsigned long sum2;
|
||||
unsigned n;
|
||||
|
||||
/* split Adler-32 into component sums */
|
||||
sum2 = (adler >> 16) & 0xffff;
|
||||
adler &= 0xffff;
|
||||
|
||||
/* in case user likes doing a byte at a time, keep it fast */
|
||||
if (len == 1) {
|
||||
adler += buf[0];
|
||||
if (adler >= BASE)
|
||||
adler -= BASE;
|
||||
sum2 += adler;
|
||||
if (sum2 >= BASE)
|
||||
sum2 -= BASE;
|
||||
return adler | (sum2 << 16);
|
||||
}
|
||||
|
||||
/* initial Adler-32 value (deferred check for len == 1 speed) */
|
||||
if (buf == Z_NULL)
|
||||
return 1L;
|
||||
|
||||
/* in case short lengths are provided, keep it somewhat fast */
|
||||
if (len < 16) {
|
||||
while (len--) {
|
||||
adler += *buf++;
|
||||
sum2 += adler;
|
||||
}
|
||||
if (adler >= BASE)
|
||||
adler -= BASE;
|
||||
MOD28(sum2); /* only added so many BASE's */
|
||||
return adler | (sum2 << 16);
|
||||
}
|
||||
|
||||
/* do length NMAX blocks -- requires just one modulo operation */
|
||||
while (len >= NMAX) {
|
||||
len -= NMAX;
|
||||
n = NMAX / 16; /* NMAX is divisible by 16 */
|
||||
do {
|
||||
DO16(buf); /* 16 sums unrolled */
|
||||
buf += 16;
|
||||
} while (--n);
|
||||
MOD(adler);
|
||||
MOD(sum2);
|
||||
}
|
||||
|
||||
/* do remaining bytes (less than NMAX, still just one modulo) */
|
||||
if (len) { /* avoid modulos if none remaining */
|
||||
while (len >= 16) {
|
||||
len -= 16;
|
||||
DO16(buf);
|
||||
buf += 16;
|
||||
}
|
||||
while (len--) {
|
||||
adler += *buf++;
|
||||
sum2 += adler;
|
||||
}
|
||||
MOD(adler);
|
||||
MOD(sum2);
|
||||
}
|
||||
|
||||
/* return recombined sums */
|
||||
return adler | (sum2 << 16);
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
local uLong adler32_combine_(adler1, adler2, len2)
|
||||
uLong adler1;
|
||||
uLong adler2;
|
||||
z_off64_t len2;
|
||||
{
|
||||
unsigned long sum1;
|
||||
unsigned long sum2;
|
||||
unsigned rem;
|
||||
|
||||
/* for negative len, return invalid adler32 as a clue for debugging */
|
||||
if (len2 < 0)
|
||||
return 0xffffffffUL;
|
||||
|
||||
/* the derivation of this formula is left as an exercise for the reader */
|
||||
MOD63(len2); /* assumes len2 >= 0 */
|
||||
rem = (unsigned)len2;
|
||||
sum1 = adler1 & 0xffff;
|
||||
sum2 = rem * sum1;
|
||||
MOD(sum2);
|
||||
sum1 += (adler2 & 0xffff) + BASE - 1;
|
||||
sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
|
||||
if (sum1 >= BASE) sum1 -= BASE;
|
||||
if (sum1 >= BASE) sum1 -= BASE;
|
||||
if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1);
|
||||
if (sum2 >= BASE) sum2 -= BASE;
|
||||
return sum1 | (sum2 << 16);
|
||||
}
|
||||
|
||||
/* ========================================================================= */
|
||||
uLong ZEXPORT adler32_combine(adler1, adler2, len2)
|
||||
uLong adler1;
|
||||
uLong adler2;
|
||||
z_off_t len2;
|
||||
{
|
||||
return adler32_combine_(adler1, adler2, len2);
|
||||
}
|
||||
|
||||
uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
|
||||
uLong adler1;
|
||||
uLong adler2;
|
||||
z_off64_t len2;
|
||||
{
|
||||
return adler32_combine_(adler1, adler2, len2);
|
||||
}
|
||||
|
|
@ -0,0 +1,69 @@
|
|||
# Amiga powerUP (TM) Makefile
|
||||
# makefile for libpng and SAS C V6.58/7.00 PPC compiler
|
||||
# Copyright (C) 1998 by Andreas R. Kleinert
|
||||
|
||||
LIBNAME = libzip.a
|
||||
|
||||
CC = scppc
|
||||
CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
|
||||
OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
|
||||
AR = ppc-amigaos-ar cr
|
||||
RANLIB = ppc-amigaos-ranlib
|
||||
LD = ppc-amigaos-ld -r
|
||||
LDFLAGS = -o
|
||||
LDLIBS = LIB:scppc.a LIB:end.o
|
||||
RM = delete quiet
|
||||
|
||||
OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
|
||||
uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
|
||||
|
||||
TEST_OBJS = example.o minigzip.o
|
||||
|
||||
all: example minigzip
|
||||
|
||||
check: test
|
||||
test: all
|
||||
example
|
||||
echo hello world | minigzip | minigzip -d
|
||||
|
||||
$(LIBNAME): $(OBJS)
|
||||
$(AR) $@ $(OBJS)
|
||||
-$(RANLIB) $@
|
||||
|
||||
example: example.o $(LIBNAME)
|
||||
$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
|
||||
|
||||
minigzip: minigzip.o $(LIBNAME)
|
||||
$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
|
||||
|
||||
mostlyclean: clean
|
||||
clean:
|
||||
$(RM) *.o example minigzip $(LIBNAME) foo.gz
|
||||
|
||||
zip:
|
||||
zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
|
||||
descrip.mms *.[ch]
|
||||
|
||||
tgz:
|
||||
cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
|
||||
zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]
|
||||
|
||||
# DO NOT DELETE THIS LINE -- make depend depends on it.
|
||||
|
||||
adler32.o: zlib.h zconf.h
|
||||
compress.o: zlib.h zconf.h
|
||||
crc32.o: crc32.h zlib.h zconf.h
|
||||
deflate.o: deflate.h zutil.h zlib.h zconf.h
|
||||
example.o: zlib.h zconf.h
|
||||
gzclose.o: zlib.h zconf.h gzguts.h
|
||||
gzlib.o: zlib.h zconf.h gzguts.h
|
||||
gzread.o: zlib.h zconf.h gzguts.h
|
||||
gzwrite.o: zlib.h zconf.h gzguts.h
|
||||
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
|
||||
minigzip.o: zlib.h zconf.h
|
||||
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
|
||||
uncompr.o: zlib.h zconf.h
|
||||
zutil.o: zutil.h zlib.h zconf.h
|
||||
|
|
@ -0,0 +1,68 @@
|
|||
# SMakefile for zlib
|
||||
# Modified from the standard UNIX Makefile Copyright Jean-loup Gailly
|
||||
# Osma Ahvenlampi <Osma.Ahvenlampi@hut.fi>
|
||||
# Amiga, SAS/C 6.56 & Smake
|
||||
|
||||
CC=sc
|
||||
CFLAGS=OPT
|
||||
#CFLAGS=OPT CPU=68030
|
||||
#CFLAGS=DEBUG=LINE
|
||||
LDFLAGS=LIB z.lib
|
||||
|
||||
SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
|
||||
NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
|
||||
DEF=POSTINC
|
||||
|
||||
OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
|
||||
uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
|
||||
|
||||
TEST_OBJS = example.o minigzip.o
|
||||
|
||||
all: SCOPTIONS example minigzip
|
||||
|
||||
check: test
|
||||
test: all
|
||||
example
|
||||
echo hello world | minigzip | minigzip -d
|
||||
|
||||
install: z.lib
|
||||
copy clone zlib.h zconf.h INCLUDE:
|
||||
copy clone z.lib LIB:
|
||||
|
||||
z.lib: $(OBJS)
|
||||
oml z.lib r $(OBJS)
|
||||
|
||||
example: example.o z.lib
|
||||
$(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS)
|
||||
|
||||
minigzip: minigzip.o z.lib
|
||||
$(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)
|
||||
|
||||
mostlyclean: clean
|
||||
clean:
|
||||
-delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS
|
||||
|
||||
SCOPTIONS: Makefile.sas
|
||||
copy to $@ <from <
|
||||
$(SCOPTIONS)
|
||||
<
|
||||
|
||||
# DO NOT DELETE THIS LINE -- make depend depends on it.
|
||||
|
||||
adler32.o: zlib.h zconf.h
|
||||
compress.o: zlib.h zconf.h
|
||||
crc32.o: crc32.h zlib.h zconf.h
|
||||
deflate.o: deflate.h zutil.h zlib.h zconf.h
|
||||
example.o: zlib.h zconf.h
|
||||
gzclose.o: zlib.h zconf.h gzguts.h
|
||||
gzlib.o: zlib.h zconf.h gzguts.h
|
||||
gzread.o: zlib.h zconf.h gzguts.h
|
||||
gzwrite.o: zlib.h zconf.h gzguts.h
|
||||
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
|
||||
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
|
||||
minigzip.o: zlib.h zconf.h
|
||||
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
|
||||
uncompr.o: zlib.h zconf.h
|
||||
zutil.o: zutil.h zlib.h zconf.h
|
||||
|
|
@ -0,0 +1,215 @@
|
|||
STRPGMEXP PGMLVL(*CURRENT) SIGNATURE('ZLIB')
|
||||
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
/* Version 1.1.3 entry points. */
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE ADLER32 ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("adler32")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE COMPRESS ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("compress")
|
||||
EXPORT SYMBOL("compress2")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE CRC32 ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("crc32")
|
||||
EXPORT SYMBOL("get_crc_table")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("deflate")
|
||||
EXPORT SYMBOL("deflateEnd")
|
||||
EXPORT SYMBOL("deflateSetDictionary")
|
||||
EXPORT SYMBOL("deflateCopy")
|
||||
EXPORT SYMBOL("deflateReset")
|
||||
EXPORT SYMBOL("deflateParams")
|
||||
EXPORT SYMBOL("deflatePrime")
|
||||
EXPORT SYMBOL("deflateInit_")
|
||||
EXPORT SYMBOL("deflateInit2_")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE GZIO ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("gzopen")
|
||||
EXPORT SYMBOL("gzdopen")
|
||||
EXPORT SYMBOL("gzsetparams")
|
||||
EXPORT SYMBOL("gzread")
|
||||
EXPORT SYMBOL("gzwrite")
|
||||
EXPORT SYMBOL("gzprintf")
|
||||
EXPORT SYMBOL("gzputs")
|
||||
EXPORT SYMBOL("gzgets")
|
||||
EXPORT SYMBOL("gzputc")
|
||||
EXPORT SYMBOL("gzgetc")
|
||||
EXPORT SYMBOL("gzflush")
|
||||
EXPORT SYMBOL("gzseek")
|
||||
EXPORT SYMBOL("gzrewind")
|
||||
EXPORT SYMBOL("gztell")
|
||||
EXPORT SYMBOL("gzeof")
|
||||
EXPORT SYMBOL("gzclose")
|
||||
EXPORT SYMBOL("gzerror")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("inflate")
|
||||
EXPORT SYMBOL("inflateEnd")
|
||||
EXPORT SYMBOL("inflateSetDictionary")
|
||||
EXPORT SYMBOL("inflateSync")
|
||||
EXPORT SYMBOL("inflateReset")
|
||||
EXPORT SYMBOL("inflateInit_")
|
||||
EXPORT SYMBOL("inflateInit2_")
|
||||
EXPORT SYMBOL("inflateSyncPoint")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE UNCOMPR ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("uncompress")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE ZUTIL ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("zlibVersion")
|
||||
EXPORT SYMBOL("zError")
|
||||
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
/* Version 1.2.1 additional entry points. */
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE COMPRESS ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("compressBound")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("deflateBound")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE GZIO ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("gzungetc")
|
||||
EXPORT SYMBOL("gzclearerr")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE INFBACK ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("inflateBack")
|
||||
EXPORT SYMBOL("inflateBackEnd")
|
||||
EXPORT SYMBOL("inflateBackInit_")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("inflateCopy")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE ZUTIL ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("zlibCompileFlags")
|
||||
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
/* Version 1.2.5 additional entry points. */
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE ADLER32 ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("adler32_combine")
|
||||
EXPORT SYMBOL("adler32_combine64")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE CRC32 ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("crc32_combine")
|
||||
EXPORT SYMBOL("crc32_combine64")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE GZLIB ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("gzbuffer")
|
||||
EXPORT SYMBOL("gzoffset")
|
||||
EXPORT SYMBOL("gzoffset64")
|
||||
EXPORT SYMBOL("gzopen64")
|
||||
EXPORT SYMBOL("gzseek64")
|
||||
EXPORT SYMBOL("gztell64")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE GZREAD ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("gzclose_r")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE GZWRITE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("gzclose_w")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("inflateMark")
|
||||
EXPORT SYMBOL("inflatePrime")
|
||||
EXPORT SYMBOL("inflateReset2")
|
||||
EXPORT SYMBOL("inflateUndermine")
|
||||
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
/* Version 1.2.6 additional entry points. */
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE DEFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("deflateResetKeep")
|
||||
EXPORT SYMBOL("deflatePending")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE GZWRITE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("gzgetc_")
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("inflateResetKeep")
|
||||
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
/* Version 1.2.8 additional entry points. */
|
||||
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/
|
||||
|
||||
/********************************************************************/
|
||||
/* *MODULE INFLATE ZLIB 01/02/01 00:15:09 */
|
||||
/********************************************************************/
|
||||
|
||||
EXPORT SYMBOL("inflateGetDictionary")
|
||||
|
||||
ENDPGMEXP
|
||||
|
|
@ -0,0 +1,110 @@
|
|||
/******************************************************************************/
|
||||
/* */
|
||||
/* ZLIB */
|
||||
/* */
|
||||
/* Compile sources into modules and link them into a service program. */
|
||||
/* */
|
||||
/******************************************************************************/
|
||||
|
||||
PGM
|
||||
|
||||
/* Configuration adjustable parameters. */
|
||||
|
||||
DCL VAR(&SRCLIB) TYPE(*CHAR) LEN(10) +
|
||||
VALUE('ZLIB') /* Source library. */
|
||||
DCL VAR(&SRCFILE) TYPE(*CHAR) LEN(10) +
|
||||
VALUE('SOURCES') /* Source member file. */
|
||||
DCL VAR(&CTLFILE) TYPE(*CHAR) LEN(10) +
|
||||
VALUE('TOOLS') /* Control member file. */
|
||||
|
||||
DCL VAR(&MODLIB) TYPE(*CHAR) LEN(10) +
|
||||
VALUE('ZLIB') /* Module library. */
|
||||
|
||||
DCL VAR(&SRVLIB) TYPE(*CHAR) LEN(10) +
|
||||
VALUE('LGPL') /* Service program library. */
|
||||
|
||||
DCL VAR(&CFLAGS) TYPE(*CHAR) +
|
||||
VALUE('OPTIMIZE(40)') /* Compile options. */
|
||||
|
||||
DCL VAR(&TGTRLS) TYPE(*CHAR) +
|
||||
VALUE('V5R3M0') /* Target release. */
|
||||
|
||||
|
||||
/* Working storage. */
|
||||
|
||||
DCL VAR(&CMDLEN) TYPE(*DEC) LEN(15 5) VALUE(300) /* Command length. */
|
||||
DCL VAR(&CMD) TYPE(*CHAR) LEN(512)
|
||||
DCL VAR(&FIXDCMD) TYPE(*CHAR) LEN(512)
|
||||
|
||||
|
||||
/* Compile sources into modules. */
|
||||
|
||||
CHGVAR VAR(&FIXDCMD) VALUE('CRTCMOD' *BCAT &CFLAGS *BCAT +
|
||||
'SYSIFCOPT(*IFS64IO)' *BCAT +
|
||||
'DEFINE(''_LARGEFILE64_SOURCE''' *BCAT +
|
||||
'''_LFS64_LARGEFILE=1'') TGTRLS(' *TCAT &TGTRLS *TCAT +
|
||||
') SRCFILE(' *TCAT &SRCLIB *TCAT '/' *TCAT +
|
||||
&SRCFILE *TCAT ') MODULE(' *TCAT &MODLIB *TCAT '/')
|
||||
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'ADLER32)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'COMPRESS)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'CRC32)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'DEFLATE)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'GZCLOSE)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'GZLIB)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'GZREAD)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'GZWRITE)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'INFBACK)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'INFFAST)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'INFLATE)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'INFTREES)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'TREES)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'UNCOMPR)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
CHGVAR VAR(&CMD) VALUE(&FIXDCMD *TCAT 'ZUTIL)')
|
||||
CALL PGM(QCMDEXC) PARM(&CMD &CMDLEN)
|
||||
|
||||
|
||||
/* Link modules into a service program. */
|
||||
|
||||
CRTSRVPGM SRVPGM(&SRVLIB/ZLIB) +
|
||||
MODULE(&MODLIB/ADLER32 &MODLIB/COMPRESS +
|
||||
&MODLIB/CRC32 &MODLIB/DEFLATE +
|
||||
&MODLIB/GZCLOSE &MODLIB/GZLIB +
|
||||
&MODLIB/GZREAD &MODLIB/GZWRITE +
|
||||
&MODLIB/INFBACK &MODLIB/INFFAST +
|
||||
&MODLIB/INFLATE &MODLIB/INFTREES +
|
||||
&MODLIB/TREES &MODLIB/UNCOMPR +
|
||||
&MODLIB/ZUTIL) +
|
||||
SRCFILE(&SRCLIB/&CTLFILE) SRCMBR(BNDSRC) +
|
||||
TEXT('ZLIB 1.2.8') TGTRLS(&TGTRLS)
|
||||
|
||||
ENDPGM
|
||||
|
|
@ -0,0 +1,115 @@
|
|||
ZLIB version 1.2.8 for AS400 installation instructions
|
||||
|
||||
I) From an AS400 *SAVF file:
|
||||
|
||||
1) Unpacking archive to an AS400 save file
|
||||
|
||||
On the AS400:
|
||||
|
||||
_ Create the ZLIB AS400 library:
|
||||
|
||||
CRTLIB LIB(ZLIB) TYPE(*PROD) TEXT('ZLIB compression API library')
|
||||
|
||||
_ Create a work save file, for example:
|
||||
|
||||
CRTSAVF FILE(ZLIB/ZLIBSAVF)
|
||||
|
||||
On a PC connected to the target AS400:
|
||||
|
||||
_ Unpack the save file image to a PC file "ZLIBSAVF"
|
||||
_ Upload this file into the save file on the AS400, for example
|
||||
using ftp in BINARY mode.
|
||||
|
||||
|
||||
2) Populating the ZLIB AS400 source library
|
||||
|
||||
On the AS400:
|
||||
|
||||
_ Extract the saved objects into the ZLIB AS400 library using:
|
||||
|
||||
RSTOBJ OBJ(*ALL) SAVLIB(ZLIB) DEV(*SAVF) SAVF(ZLIB/ZLIBSAVF) RSTLIB(ZLIB)
|
||||
|
||||
|
||||
3) Customize installation:
|
||||
|
||||
_ Edit CL member ZLIB/TOOLS(COMPILE) and change parameters if needed,
|
||||
according to the comments.
|
||||
|
||||
_ Compile this member with:
|
||||
|
||||
CRTCLPGM PGM(ZLIB/COMPILE) SRCFILE(ZLIB/TOOLS) SRCMBR(COMPILE)
|
||||
|
||||
|
||||
4) Compile and generate the service program:
|
||||
|
||||
_ This can now be done by executing:
|
||||
|
||||
CALL PGM(ZLIB/COMPILE)
|
||||
|
||||
|
||||
|
||||
II) From the original source distribution:
|
||||
|
||||
1) On the AS400, create the source library:
|
||||
|
||||
CRTLIB LIB(ZLIB) TYPE(*PROD) TEXT('ZLIB compression API library')
|
||||
|
||||
2) Create the source files:
|
||||
|
||||
CRTSRCPF FILE(ZLIB/SOURCES) RCDLEN(112) TEXT('ZLIB library modules')
|
||||
CRTSRCPF FILE(ZLIB/H) RCDLEN(112) TEXT('ZLIB library includes')
|
||||
CRTSRCPF FILE(ZLIB/TOOLS) RCDLEN(112) TEXT('ZLIB library control utilities')
|
||||
|
||||
3) From the machine hosting the distribution files, upload them (with
|
||||
FTP in text mode, for example) according to the following table:
|
||||
|
||||
Original AS400 AS400 AS400 AS400
|
||||
file file member type description
|
||||
SOURCES Original ZLIB C subprogram sources
|
||||
adler32.c ADLER32 C ZLIB - Compute the Adler-32 checksum of a dta strm
|
||||
compress.c COMPRESS C ZLIB - Compress a memory buffer
|
||||
crc32.c CRC32 C ZLIB - Compute the CRC-32 of a data stream
|
||||
deflate.c DEFLATE C ZLIB - Compress data using the deflation algorithm
|
||||
gzclose.c GZCLOSE C ZLIB - Close .gz files
|
||||
gzlib.c GZLIB C ZLIB - Miscellaneous .gz files IO support
|
||||
gzread.c GZREAD C ZLIB - Read .gz files
|
||||
gzwrite.c GZWRITE C ZLIB - Write .gz files
|
||||
infback.c INFBACK C ZLIB - Inflate using a callback interface
|
||||
inffast.c INFFAST C ZLIB - Fast proc. literals & length/distance pairs
|
||||
inflate.c INFLATE C ZLIB - Interface to inflate modules
|
||||
inftrees.c INFTREES C ZLIB - Generate Huffman trees for efficient decode
|
||||
trees.c TREES C ZLIB - Output deflated data using Huffman coding
|
||||
uncompr.c UNCOMPR C ZLIB - Decompress a memory buffer
|
||||
zutil.c ZUTIL C ZLIB - Target dependent utility functions
|
||||
H Original ZLIB C and ILE/RPG include files
|
||||
crc32.h CRC32 C ZLIB - CRC32 tables
|
||||
deflate.h DEFLATE C ZLIB - Internal compression state
|
||||
gzguts.h GZGUTS C ZLIB - Definitions for the gzclose module
|
||||
inffast.h INFFAST C ZLIB - Header to use inffast.c
|
||||
inffixed.h INFFIXED C ZLIB - Table for decoding fixed codes
|
||||
inflate.h INFLATE C ZLIB - Internal inflate state definitions
|
||||
inftrees.h INFTREES C ZLIB - Header to use inftrees.c
|
||||
trees.h TREES C ZLIB - Created automatically with -DGEN_TREES_H
|
||||
zconf.h ZCONF C ZLIB - Compression library configuration
|
||||
zlib.h ZLIB C ZLIB - Compression library C user interface
|
||||
as400/zlib.inc ZLIB.INC RPGLE ZLIB - Compression library ILE RPG user interface
|
||||
zutil.h ZUTIL C ZLIB - Internal interface and configuration
|
||||
TOOLS Building source software & AS/400 README
|
||||
as400/bndsrc BNDSRC Entry point exportation list
|
||||
as400/compile.clp COMPILE CLP Compile sources & generate service program
|
||||
as400/readme.txt README TXT Installation instructions
|
||||
|
||||
4) Continue as in I)3).
|
||||
|
||||
|
||||
|
||||
|
||||
Notes: For AS400 ILE RPG programmers, a /copy member defining the ZLIB
|
||||
API prototypes for ILE RPG can be found in ZLIB/H(ZLIB.INC).
|
||||
Please read comments in this member for more information.
|
||||
|
||||
Remember that most foreign textual data are ASCII coded: this
|
||||
implementation does not handle conversion from/to ASCII, so
|
||||
text data code conversions must be done explicitely.
|
||||
|
||||
Mainly for the reason above, always open zipped files in binary mode.
|
||||
|
|
@ -0,0 +1,451 @@
|
|||
* ZLIB.INC - Interface to the general purpose compression library
|
||||
*
|
||||
* ILE RPG400 version by Patrick Monnerat, DATASPHERE.
|
||||
* Version 1.2.8
|
||||
*
|
||||
*
|
||||
* WARNING:
|
||||
* Procedures inflateInit(), inflateInit2(), deflateInit(),
|
||||
* deflateInit2() and inflateBackInit() need to be called with
|
||||
* two additional arguments:
|
||||
* the package version string and the stream control structure.
|
||||
* size. This is needed because RPG lacks some macro feature.
|
||||
* Call these procedures as:
|
||||
* inflateInit(...: ZLIB_VERSION: %size(z_stream))
|
||||
*
|
||||
/if not defined(ZLIB_H_)
|
||||
/define ZLIB_H_
|
||||
*
|
||||
**************************************************************************
|
||||
* Constants
|
||||
**************************************************************************
|
||||
*
|
||||
* Versioning information.
|
||||
*
|
||||
D ZLIB_VERSION C '1.2.8'
|
||||
D ZLIB_VERNUM C X'1280'
|
||||
D ZLIB_VER_MAJOR C 1
|
||||
D ZLIB_VER_MINOR C 2
|
||||
D ZLIB_VER_REVISION...
|
||||
D C 8
|
||||
D ZLIB_VER_SUBREVISION...
|
||||
D C 0
|
||||
*
|
||||
* Other equates.
|
||||
*
|
||||
D Z_NO_FLUSH C 0
|
||||
D Z_PARTIAL_FLUSH...
|
||||
D C 1
|
||||
D Z_SYNC_FLUSH C 2
|
||||
D Z_FULL_FLUSH C 3
|
||||
D Z_FINISH C 4
|
||||
D Z_BLOCK C 5
|
||||
D Z_TREES C 6
|
||||
*
|
||||
D Z_OK C 0
|
||||
D Z_STREAM_END C 1
|
||||
D Z_NEED_DICT C 2
|
||||
D Z_ERRNO C -1
|
||||
D Z_STREAM_ERROR C -2
|
||||
D Z_DATA_ERROR C -3
|
||||
D Z_MEM_ERROR C -4
|
||||
D Z_BUF_ERROR C -5
|
||||
DZ_VERSION_ERROR C -6
|
||||
*
|
||||
D Z_NO_COMPRESSION...
|
||||
D C 0
|
||||
D Z_BEST_SPEED C 1
|
||||
D Z_BEST_COMPRESSION...
|
||||
D C 9
|
||||
D Z_DEFAULT_COMPRESSION...
|
||||
D C -1
|
||||
*
|
||||
D Z_FILTERED C 1
|
||||
D Z_HUFFMAN_ONLY C 2
|
||||
D Z_RLE C 3
|
||||
D Z_DEFAULT_STRATEGY...
|
||||
D C 0
|
||||
*
|
||||
D Z_BINARY C 0
|
||||
D Z_ASCII C 1
|
||||
D Z_UNKNOWN C 2
|
||||
*
|
||||
D Z_DEFLATED C 8
|
||||
*
|
||||
D Z_NULL C 0
|
||||
*
|
||||
**************************************************************************
|
||||
* Types
|
||||
**************************************************************************
|
||||
*
|
||||
D z_streamp S * Stream struct ptr
|
||||
D gzFile S * File pointer
|
||||
D z_off_t S 10i 0 Stream offsets
|
||||
D z_off64_t S 20i 0 Stream offsets
|
||||
*
|
||||
**************************************************************************
|
||||
* Structures
|
||||
**************************************************************************
|
||||
*
|
||||
* The GZIP encode/decode stream support structure.
|
||||
*
|
||||
D z_stream DS align based(z_streamp)
|
||||
D zs_next_in * Next input byte
|
||||
D zs_avail_in 10U 0 Byte cnt at next_in
|
||||
D zs_total_in 10U 0 Total bytes read
|
||||
D zs_next_out * Output buffer ptr
|
||||
D zs_avail_out 10U 0 Room left @ next_out
|
||||
D zs_total_out 10U 0 Total bytes written
|
||||
D zs_msg * Last errmsg or null
|
||||
D zs_state * Internal state
|
||||
D zs_zalloc * procptr Int. state allocator
|
||||
D zs_free * procptr Int. state dealloc.
|
||||
D zs_opaque * Private alloc. data
|
||||
D zs_data_type 10i 0 ASC/BIN best guess
|
||||
D zs_adler 10u 0 Uncompr. adler32 val
|
||||
D 10U 0 Reserved
|
||||
D 10U 0 Ptr. alignment
|
||||
*
|
||||
**************************************************************************
|
||||
* Utility function prototypes
|
||||
**************************************************************************
|
||||
*
|
||||
D compress PR 10I 0 extproc('compress')
|
||||
D dest 65535 options(*varsize) Destination buffer
|
||||
D destLen 10U 0 Destination length
|
||||
D source 65535 const options(*varsize) Source buffer
|
||||
D sourceLen 10u 0 value Source length
|
||||
*
|
||||
D compress2 PR 10I 0 extproc('compress2')
|
||||
D dest 65535 options(*varsize) Destination buffer
|
||||
D destLen 10U 0 Destination length
|
||||
D source 65535 const options(*varsize) Source buffer
|
||||
D sourceLen 10U 0 value Source length
|
||||
D level 10I 0 value Compression level
|
||||
*
|
||||
D compressBound PR 10U 0 extproc('compressBound')
|
||||
D sourceLen 10U 0 value
|
||||
*
|
||||
D uncompress PR 10I 0 extproc('uncompress')
|
||||
D dest 65535 options(*varsize) Destination buffer
|
||||
D destLen 10U 0 Destination length
|
||||
D source 65535 const options(*varsize) Source buffer
|
||||
D sourceLen 10U 0 value Source length
|
||||
*
|
||||
/if not defined(LARGE_FILES)
|
||||
D gzopen PR extproc('gzopen')
|
||||
D like(gzFile)
|
||||
D path * value options(*string) File pathname
|
||||
D mode * value options(*string) Open mode
|
||||
/else
|
||||
D gzopen PR extproc('gzopen64')
|
||||
D like(gzFile)
|
||||
D path * value options(*string) File pathname
|
||||
D mode * value options(*string) Open mode
|
||||
*
|
||||
D gzopen64 PR extproc('gzopen64')
|
||||
D like(gzFile)
|
||||
D path * value options(*string) File pathname
|
||||
D mode * value options(*string) Open mode
|
||||
/endif
|
||||
*
|
||||
D gzdopen PR extproc('gzdopen')
|
||||
D like(gzFile)
|
||||
D fd 10I 0 value File descriptor
|
||||
D mode * value options(*string) Open mode
|
||||
*
|
||||
D gzbuffer PR 10I 0 extproc('gzbuffer')
|
||||
D file value like(gzFile) File pointer
|
||||
D size 10U 0 value
|
||||
*
|
||||
D gzsetparams PR 10I 0 extproc('gzsetparams')
|
||||
D file value like(gzFile) File pointer
|
||||
D level 10I 0 value
|
||||
D strategy 10I 0 value
|
||||
*
|
||||
D gzread PR 10I 0 extproc('gzread')
|
||||
D file value like(gzFile) File pointer
|
||||
D buf 65535 options(*varsize) Buffer
|
||||
D len 10u 0 value Buffer length
|
||||
*
|
||||
D gzwrite PR 10I 0 extproc('gzwrite')
|
||||
D file value like(gzFile) File pointer
|
||||
D buf 65535 const options(*varsize) Buffer
|
||||
D len 10u 0 value Buffer length
|
||||
*
|
||||
D gzputs PR 10I 0 extproc('gzputs')
|
||||
D file value like(gzFile) File pointer
|
||||
D s * value options(*string) String to output
|
||||
*
|
||||
D gzgets PR * extproc('gzgets')
|
||||
D file value like(gzFile) File pointer
|
||||
D buf 65535 options(*varsize) Read buffer
|
||||
D len 10i 0 value Buffer length
|
||||
*
|
||||
D gzputc PR 10i 0 extproc('gzputc')
|
||||
D file value like(gzFile) File pointer
|
||||
D c 10I 0 value Character to write
|
||||
*
|
||||
D gzgetc PR 10i 0 extproc('gzgetc')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzgetc_ PR 10i 0 extproc('gzgetc_')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzungetc PR 10i 0 extproc('gzungetc')
|
||||
D c 10I 0 value Character to push
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzflush PR 10i 0 extproc('gzflush')
|
||||
D file value like(gzFile) File pointer
|
||||
D flush 10I 0 value Type of flush
|
||||
*
|
||||
/if not defined(LARGE_FILES)
|
||||
D gzseek PR extproc('gzseek')
|
||||
D like(z_off_t)
|
||||
D file value like(gzFile) File pointer
|
||||
D offset value like(z_off_t) Offset
|
||||
D whence 10i 0 value Origin
|
||||
/else
|
||||
D gzseek PR extproc('gzseek64')
|
||||
D like(z_off_t)
|
||||
D file value like(gzFile) File pointer
|
||||
D offset value like(z_off_t) Offset
|
||||
D whence 10i 0 value Origin
|
||||
*
|
||||
D gzseek64 PR extproc('gzseek64')
|
||||
D like(z_off64_t)
|
||||
D file value like(gzFile) File pointer
|
||||
D offset value like(z_off64_t) Offset
|
||||
D whence 10i 0 value Origin
|
||||
/endif
|
||||
*
|
||||
D gzrewind PR 10i 0 extproc('gzrewind')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
/if not defined(LARGE_FILES)
|
||||
D gztell PR extproc('gztell')
|
||||
D like(z_off_t)
|
||||
D file value like(gzFile) File pointer
|
||||
/else
|
||||
D gztell PR extproc('gztell64')
|
||||
D like(z_off_t)
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gztell64 PR extproc('gztell64')
|
||||
D like(z_off64_t)
|
||||
D file value like(gzFile) File pointer
|
||||
/endif
|
||||
*
|
||||
/if not defined(LARGE_FILES)
|
||||
D gzoffset PR extproc('gzoffset')
|
||||
D like(z_off_t)
|
||||
D file value like(gzFile) File pointer
|
||||
/else
|
||||
D gzoffset PR extproc('gzoffset64')
|
||||
D like(z_off_t)
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzoffset64 PR extproc('gzoffset64')
|
||||
D like(z_off64_t)
|
||||
D file value like(gzFile) File pointer
|
||||
/endif
|
||||
*
|
||||
D gzeof PR 10i 0 extproc('gzeof')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzclose_r PR 10i 0 extproc('gzclose_r')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzclose_w PR 10i 0 extproc('gzclose_w')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzclose PR 10i 0 extproc('gzclose')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
D gzerror PR * extproc('gzerror') Error string
|
||||
D file value like(gzFile) File pointer
|
||||
D errnum 10I 0 Error code
|
||||
*
|
||||
D gzclearerr PR extproc('gzclearerr')
|
||||
D file value like(gzFile) File pointer
|
||||
*
|
||||
**************************************************************************
|
||||
* Basic function prototypes
|
||||
**************************************************************************
|
||||
*
|
||||
D zlibVersion PR * extproc('zlibVersion') Version string
|
||||
*
|
||||
D deflateInit PR 10I 0 extproc('deflateInit_') Init. compression
|
||||
D strm like(z_stream) Compression stream
|
||||
D level 10I 0 value Compression level
|
||||
D version * value options(*string) Version string
|
||||
D stream_size 10i 0 value Stream struct. size
|
||||
*
|
||||
D deflate PR 10I 0 extproc('deflate') Compress data
|
||||
D strm like(z_stream) Compression stream
|
||||
D flush 10I 0 value Flush type required
|
||||
*
|
||||
D deflateEnd PR 10I 0 extproc('deflateEnd') Termin. compression
|
||||
D strm like(z_stream) Compression stream
|
||||
*
|
||||
D inflateInit PR 10I 0 extproc('inflateInit_') Init. expansion
|
||||
D strm like(z_stream) Expansion stream
|
||||
D version * value options(*string) Version string
|
||||
D stream_size 10i 0 value Stream struct. size
|
||||
*
|
||||
D inflate PR 10I 0 extproc('inflate') Expand data
|
||||
D strm like(z_stream) Expansion stream
|
||||
D flush 10I 0 value Flush type required
|
||||
*
|
||||
D inflateEnd PR 10I 0 extproc('inflateEnd') Termin. expansion
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
**************************************************************************
|
||||
* Advanced function prototypes
|
||||
**************************************************************************
|
||||
*
|
||||
D deflateInit2 PR 10I 0 extproc('deflateInit2_') Init. compression
|
||||
D strm like(z_stream) Compression stream
|
||||
D level 10I 0 value Compression level
|
||||
D method 10I 0 value Compression method
|
||||
D windowBits 10I 0 value log2(window size)
|
||||
D memLevel 10I 0 value Mem/cmpress tradeoff
|
||||
D strategy 10I 0 value Compression stategy
|
||||
D version * value options(*string) Version string
|
||||
D stream_size 10i 0 value Stream struct. size
|
||||
*
|
||||
D deflateSetDictionary...
|
||||
D PR 10I 0 extproc('deflateSetDictionary') Init. dictionary
|
||||
D strm like(z_stream) Compression stream
|
||||
D dictionary 65535 const options(*varsize) Dictionary bytes
|
||||
D dictLength 10U 0 value Dictionary length
|
||||
*
|
||||
D deflateCopy PR 10I 0 extproc('deflateCopy') Compress strm 2 strm
|
||||
D dest like(z_stream) Destination stream
|
||||
D source like(z_stream) Source stream
|
||||
*
|
||||
D deflateReset PR 10I 0 extproc('deflateReset') End and init. stream
|
||||
D strm like(z_stream) Compression stream
|
||||
*
|
||||
D deflateParams PR 10I 0 extproc('deflateParams') Change level & strat
|
||||
D strm like(z_stream) Compression stream
|
||||
D level 10I 0 value Compression level
|
||||
D strategy 10I 0 value Compression stategy
|
||||
*
|
||||
D deflateBound PR 10U 0 extproc('deflateBound') Change level & strat
|
||||
D strm like(z_stream) Compression stream
|
||||
D sourcelen 10U 0 value Compression level
|
||||
*
|
||||
D deflatePending PR 10I 0 extproc('deflatePending') Change level & strat
|
||||
D strm like(z_stream) Compression stream
|
||||
D pending 10U 0 Pending bytes
|
||||
D bits 10I 0 Pending bits
|
||||
*
|
||||
D deflatePrime PR 10I 0 extproc('deflatePrime') Change level & strat
|
||||
D strm like(z_stream) Compression stream
|
||||
D bits 10I 0 value # of bits to insert
|
||||
D value 10I 0 value Bits to insert
|
||||
*
|
||||
D inflateInit2 PR 10I 0 extproc('inflateInit2_') Init. expansion
|
||||
D strm like(z_stream) Expansion stream
|
||||
D windowBits 10I 0 value log2(window size)
|
||||
D version * value options(*string) Version string
|
||||
D stream_size 10i 0 value Stream struct. size
|
||||
*
|
||||
D inflateSetDictionary...
|
||||
D PR 10I 0 extproc('inflateSetDictionary') Init. dictionary
|
||||
D strm like(z_stream) Expansion stream
|
||||
D dictionary 65535 const options(*varsize) Dictionary bytes
|
||||
D dictLength 10U 0 value Dictionary length
|
||||
*
|
||||
D inflateGetDictionary...
|
||||
D PR 10I 0 extproc('inflateGetDictionary') Get dictionary
|
||||
D strm like(z_stream) Expansion stream
|
||||
D dictionary 65535 options(*varsize) Dictionary bytes
|
||||
D dictLength 10U 0 Dictionary length
|
||||
*
|
||||
D inflateSync PR 10I 0 extproc('inflateSync') Sync. expansion
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
D inflateCopy PR 10I 0 extproc('inflateCopy')
|
||||
D dest like(z_stream) Destination stream
|
||||
D source like(z_stream) Source stream
|
||||
*
|
||||
D inflateReset PR 10I 0 extproc('inflateReset') End and init. stream
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
D inflateReset2 PR 10I 0 extproc('inflateReset2') End and init. stream
|
||||
D strm like(z_stream) Expansion stream
|
||||
D windowBits 10I 0 value Log2(buffer size)
|
||||
*
|
||||
D inflatePrime PR 10I 0 extproc('inflatePrime') Insert bits
|
||||
D strm like(z_stream) Expansion stream
|
||||
D bits 10I 0 value Bit count
|
||||
D value 10I 0 value Bits to insert
|
||||
*
|
||||
D inflateMark PR 10I 0 extproc('inflateMark') Get inflate info
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
D inflateBackInit...
|
||||
D PR 10I 0 extproc('inflateBackInit_')
|
||||
D strm like(z_stream) Expansion stream
|
||||
D windowBits 10I 0 value Log2(buffer size)
|
||||
D window 65535 options(*varsize) Buffer
|
||||
D version * value options(*string) Version string
|
||||
D stream_size 10i 0 value Stream struct. size
|
||||
*
|
||||
D inflateBack PR 10I 0 extproc('inflateBack')
|
||||
D strm like(z_stream) Expansion stream
|
||||
D in * value procptr Input function
|
||||
D in_desc * value Input descriptor
|
||||
D out * value procptr Output function
|
||||
D out_desc * value Output descriptor
|
||||
*
|
||||
D inflateBackEnd PR 10I 0 extproc('inflateBackEnd')
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
D zlibCompileFlags...
|
||||
D PR 10U 0 extproc('zlibCompileFlags')
|
||||
*
|
||||
**************************************************************************
|
||||
* Checksum function prototypes
|
||||
**************************************************************************
|
||||
*
|
||||
D adler32 PR 10U 0 extproc('adler32') New checksum
|
||||
D adler 10U 0 value Old checksum
|
||||
D buf 65535 const options(*varsize) Bytes to accumulate
|
||||
D len 10U 0 value Buffer length
|
||||
*
|
||||
D crc32 PR 10U 0 extproc('crc32') New checksum
|
||||
D crc 10U 0 value Old checksum
|
||||
D buf 65535 const options(*varsize) Bytes to accumulate
|
||||
D len 10U 0 value Buffer length
|
||||
*
|
||||
**************************************************************************
|
||||
* Miscellaneous function prototypes
|
||||
**************************************************************************
|
||||
*
|
||||
D zError PR * extproc('zError') Error string
|
||||
D err 10I 0 value Error code
|
||||
*
|
||||
D inflateSyncPoint...
|
||||
D PR 10I 0 extproc('inflateSyncPoint')
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
D get_crc_table PR * extproc('get_crc_table') Ptr to ulongs
|
||||
*
|
||||
D inflateUndermine...
|
||||
D PR 10I 0 extproc('inflateUndermine')
|
||||
D strm like(z_stream) Expansion stream
|
||||
D arg 10I 0 value Error code
|
||||
*
|
||||
D inflateResetKeep...
|
||||
D PR 10I 0 extproc('inflateResetKeep') End and init. stream
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
D deflateResetKeep...
|
||||
D PR 10I 0 extproc('deflateResetKeep') End and init. stream
|
||||
D strm like(z_stream) Expansion stream
|
||||
*
|
||||
/endif
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
/* compress.c -- compress a memory buffer
|
||||
* Copyright (C) 1995-2005 Jean-loup Gailly.
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* @(#) $Id$ */
|
||||
|
||||
#define ZLIB_INTERNAL
|
||||
#include "zlib.h"
|
||||
|
||||
/* ===========================================================================
|
||||
Compresses the source buffer into the destination buffer. The level
|
||||
parameter has the same meaning as in deflateInit. sourceLen is the byte
|
||||
length of the source buffer. Upon entry, destLen is the total size of the
|
||||
destination buffer, which must be at least 0.1% larger than sourceLen plus
|
||||
12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
|
||||
|
||||
compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
|
||||
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
|
||||
Z_STREAM_ERROR if the level parameter is invalid.
|
||||
*/
|
||||
int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
|
||||
Bytef *dest;
|
||||
uLongf *destLen;
|
||||
const Bytef *source;
|
||||
uLong sourceLen;
|
||||
int level;
|
||||
{
|
||||
z_stream stream;
|
||||
int err;
|
||||
|
||||
stream.next_in = (z_const Bytef *)source;
|
||||
stream.avail_in = (uInt)sourceLen;
|
||||
#ifdef MAXSEG_64K
|
||||
/* Check for source > 64K on 16-bit machine: */
|
||||
if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
|
||||
#endif
|
||||
stream.next_out = dest;
|
||||
stream.avail_out = (uInt)*destLen;
|
||||
if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
|
||||
|
||||
stream.zalloc = (alloc_func)0;
|
||||
stream.zfree = (free_func)0;
|
||||
stream.opaque = (voidpf)0;
|
||||
|
||||
err = deflateInit(&stream, level);
|
||||
if (err != Z_OK) return err;
|
||||
|
||||
err = deflate(&stream, Z_FINISH);
|
||||
if (err != Z_STREAM_END) {
|
||||
deflateEnd(&stream);
|
||||
return err == Z_OK ? Z_BUF_ERROR : err;
|
||||
}
|
||||
*destLen = stream.total_out;
|
||||
|
||||
err = deflateEnd(&stream);
|
||||
return err;
|
||||
}
|
||||
|
||||
/* ===========================================================================
|
||||
*/
|
||||
int ZEXPORT compress (dest, destLen, source, sourceLen)
|
||||
Bytef *dest;
|
||||
uLongf *destLen;
|
||||
const Bytef *source;
|
||||
uLong sourceLen;
|
||||
{
|
||||
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
|
||||
}
|
||||
|
||||
/* ===========================================================================
|
||||
If the default memLevel or windowBits for deflateInit() is changed, then
|
||||
this function needs to be updated.
|
||||
*/
|
||||
uLong ZEXPORT compressBound (sourceLen)
|
||||
uLong sourceLen;
|
||||
{
|
||||
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
|
||||
(sourceLen >> 25) + 13;
|
||||
}
|
||||
|
|
@ -0,0 +1,831 @@
|
|||
#!/bin/sh
|
||||
# configure script for zlib.
|
||||
#
|
||||
# Normally configure builds both a static and a shared library.
|
||||
# If you want to build just a static library, use: ./configure --static
|
||||
#
|
||||
# To impose specific compiler or flags or install directory, use for example:
|
||||
# prefix=$HOME CC=cc CFLAGS="-O4" ./configure
|
||||
# or for csh/tcsh users:
|
||||
# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
|
||||
|
||||
# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
|
||||
# If you have problems, try without defining CC and CFLAGS before reporting
|
||||
# an error.
|
||||
|
||||
# start off configure.log
|
||||
echo -------------------- >> configure.log
|
||||
echo $0 $* >> configure.log
|
||||
date >> configure.log
|
||||
|
||||
# set command prefix for cross-compilation
|
||||
if [ -n "${CHOST}" ]; then
|
||||
uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
|
||||
CROSS_PREFIX="${CHOST}-"
|
||||
fi
|
||||
|
||||
# destination name for static library
|
||||
STATICLIB=libz.a
|
||||
|
||||
# extract zlib version numbers from zlib.h
|
||||
VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
|
||||
VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h`
|
||||
VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
|
||||
VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
|
||||
|
||||
# establish commands for library building
|
||||
if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
|
||||
AR=${AR-"${CROSS_PREFIX}ar"}
|
||||
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
|
||||
else
|
||||
AR=${AR-"ar"}
|
||||
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
|
||||
fi
|
||||
ARFLAGS=${ARFLAGS-"rc"}
|
||||
if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
|
||||
RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
|
||||
test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
|
||||
else
|
||||
RANLIB=${RANLIB-"ranlib"}
|
||||
fi
|
||||
if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
|
||||
NM=${NM-"${CROSS_PREFIX}nm"}
|
||||
test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
|
||||
else
|
||||
NM=${NM-"nm"}
|
||||
fi
|
||||
|
||||
# set defaults before processing command line options
|
||||
LDCONFIG=${LDCONFIG-"ldconfig"}
|
||||
LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
|
||||
ARCHS=
|
||||
prefix=${prefix-/usr/local}
|
||||
exec_prefix=${exec_prefix-'${prefix}'}
|
||||
libdir=${libdir-'${exec_prefix}/lib'}
|
||||
sharedlibdir=${sharedlibdir-'${libdir}'}
|
||||
includedir=${includedir-'${prefix}/include'}
|
||||
mandir=${mandir-'${prefix}/share/man'}
|
||||
shared_ext='.so'
|
||||
shared=1
|
||||
solo=0
|
||||
cover=0
|
||||
zprefix=0
|
||||
zconst=0
|
||||
build64=0
|
||||
gcc=0
|
||||
old_cc="$CC"
|
||||
old_cflags="$CFLAGS"
|
||||
OBJC='$(OBJZ) $(OBJG)'
|
||||
PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
|
||||
|
||||
# leave this script, optionally in a bad way
|
||||
leave()
|
||||
{
|
||||
if test "$*" != "0"; then
|
||||
echo "** $0 aborting." | tee -a configure.log
|
||||
fi
|
||||
rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
|
||||
echo -------------------- >> configure.log
|
||||
echo >> configure.log
|
||||
echo >> configure.log
|
||||
exit $1
|
||||
}
|
||||
|
||||
# process command line options
|
||||
while test $# -ge 1
|
||||
do
|
||||
case "$1" in
|
||||
-h* | --help)
|
||||
echo 'usage:' | tee -a configure.log
|
||||
echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
|
||||
echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
|
||||
echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
|
||||
exit 0 ;;
|
||||
-p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
|
||||
-e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
|
||||
-l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
|
||||
--sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
|
||||
-i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
|
||||
-u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
|
||||
-p* | --prefix) prefix="$2"; shift; shift ;;
|
||||
-e* | --eprefix) exec_prefix="$2"; shift; shift ;;
|
||||
-l* | --libdir) libdir="$2"; shift; shift ;;
|
||||
-i* | --includedir) includedir="$2"; shift; shift ;;
|
||||
-s* | --shared | --enable-shared) shared=1; shift ;;
|
||||
-t | --static) shared=0; shift ;;
|
||||
--solo) solo=1; shift ;;
|
||||
--cover) cover=1; shift ;;
|
||||
-z* | --zprefix) zprefix=1; shift ;;
|
||||
-6* | --64) build64=1; shift ;;
|
||||
-a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
|
||||
--sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
|
||||
--localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
|
||||
-c* | --const) zconst=1; shift ;;
|
||||
*)
|
||||
echo "unknown option: $1" | tee -a configure.log
|
||||
echo "$0 --help for help" | tee -a configure.log
|
||||
leave 1;;
|
||||
esac
|
||||
done
|
||||
|
||||
# temporary file name
|
||||
test=ztest$$
|
||||
|
||||
# put arguments in log, also put test file in log if used in arguments
|
||||
show()
|
||||
{
|
||||
case "$*" in
|
||||
*$test.c*)
|
||||
echo === $test.c === >> configure.log
|
||||
cat $test.c >> configure.log
|
||||
echo === >> configure.log;;
|
||||
esac
|
||||
echo $* >> configure.log
|
||||
}
|
||||
|
||||
# check for gcc vs. cc and set compile and link flags based on the system identified by uname
|
||||
cat > $test.c <<EOF
|
||||
extern int getchar();
|
||||
int hello() {return getchar();}
|
||||
EOF
|
||||
|
||||
test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
|
||||
cc=${CC-${CROSS_PREFIX}gcc}
|
||||
cflags=${CFLAGS-"-O3"}
|
||||
# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
|
||||
case "$cc" in
|
||||
*gcc*) gcc=1 ;;
|
||||
*clang*) gcc=1 ;;
|
||||
esac
|
||||
case `$cc -v 2>&1` in
|
||||
*gcc*) gcc=1 ;;
|
||||
esac
|
||||
|
||||
show $cc -c $test.c
|
||||
if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
|
||||
echo ... using gcc >> configure.log
|
||||
CC="$cc"
|
||||
CFLAGS="${CFLAGS--O3} ${ARCHS}"
|
||||
SFLAGS="${CFLAGS--O3} -fPIC"
|
||||
LDFLAGS="${LDFLAGS} ${ARCHS}"
|
||||
if test $build64 -eq 1; then
|
||||
CFLAGS="${CFLAGS} -m64"
|
||||
SFLAGS="${SFLAGS} -m64"
|
||||
fi
|
||||
if test "${ZLIBGCCWARN}" = "YES"; then
|
||||
if test "$zconst" -eq 1; then
|
||||
CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
|
||||
else
|
||||
CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
|
||||
fi
|
||||
fi
|
||||
if test -z "$uname"; then
|
||||
uname=`(uname -s || echo unknown) 2>/dev/null`
|
||||
fi
|
||||
case "$uname" in
|
||||
Linux* | linux* | GNU | GNU/* | solaris*)
|
||||
LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
|
||||
*BSD | *bsd* | DragonFly)
|
||||
LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
|
||||
LDCONFIG="ldconfig -m" ;;
|
||||
CYGWIN* | Cygwin* | cygwin* | OS/2*)
|
||||
EXE='.exe' ;;
|
||||
MINGW* | mingw*)
|
||||
# temporary bypass
|
||||
rm -f $test.[co] $test $test$shared_ext
|
||||
echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
|
||||
leave 1
|
||||
LDSHARED=${LDSHARED-"$cc -shared"}
|
||||
LDSHAREDLIBC=""
|
||||
EXE='.exe' ;;
|
||||
QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
|
||||
# (alain.bonnefoy@icbt.com)
|
||||
LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
|
||||
HP-UX*)
|
||||
LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
|
||||
case `(uname -m || echo unknown) 2>/dev/null` in
|
||||
ia64)
|
||||
shared_ext='.so'
|
||||
SHAREDLIB='libz.so' ;;
|
||||
*)
|
||||
shared_ext='.sl'
|
||||
SHAREDLIB='libz.sl' ;;
|
||||
esac ;;
|
||||
Darwin* | darwin*)
|
||||
shared_ext='.dylib'
|
||||
SHAREDLIB=libz$shared_ext
|
||||
SHAREDLIBV=libz.$VER$shared_ext
|
||||
SHAREDLIBM=libz.$VER1$shared_ext
|
||||
LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
|
||||
if libtool -V 2>&1 | grep Apple > /dev/null; then
|
||||
AR="libtool"
|
||||
else
|
||||
AR="/usr/bin/libtool"
|
||||
fi
|
||||
ARFLAGS="-o" ;;
|
||||
*) LDSHARED=${LDSHARED-"$cc -shared"} ;;
|
||||
esac
|
||||
else
|
||||
# find system name and corresponding cc options
|
||||
CC=${CC-cc}
|
||||
gcc=0
|
||||
echo ... using $CC >> configure.log
|
||||
if test -z "$uname"; then
|
||||
uname=`(uname -sr || echo unknown) 2>/dev/null`
|
||||
fi
|
||||
case "$uname" in
|
||||
HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
|
||||
CFLAGS=${CFLAGS-"-O"}
|
||||
# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
|
||||
LDSHARED=${LDSHARED-"ld -b"}
|
||||
case `(uname -m || echo unknown) 2>/dev/null` in
|
||||
ia64)
|
||||
shared_ext='.so'
|
||||
SHAREDLIB='libz.so' ;;
|
||||
*)
|
||||
shared_ext='.sl'
|
||||
SHAREDLIB='libz.sl' ;;
|
||||
esac ;;
|
||||
IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
|
||||
CFLAGS=${CFLAGS-"-ansi -O2"}
|
||||
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
|
||||
OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
|
||||
CFLAGS=${CFLAGS-"-O -std1"}
|
||||
LDFLAGS="${LDFLAGS} -Wl,-rpath,."
|
||||
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
|
||||
OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
|
||||
CFLAGS=${CFLAGS-"-O -std1"}
|
||||
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
|
||||
QNX*) SFLAGS=${CFLAGS-"-4 -O"}
|
||||
CFLAGS=${CFLAGS-"-4 -O"}
|
||||
LDSHARED=${LDSHARED-"cc"}
|
||||
RANLIB=${RANLIB-"true"}
|
||||
AR="cc"
|
||||
ARFLAGS="-A" ;;
|
||||
SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
|
||||
CFLAGS=${CFLAGS-"-O3"}
|
||||
LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
|
||||
SunOS\ 5* | solaris*)
|
||||
LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
|
||||
SFLAGS=${CFLAGS-"-fast -KPIC"}
|
||||
CFLAGS=${CFLAGS-"-fast"}
|
||||
if test $build64 -eq 1; then
|
||||
# old versions of SunPRO/Workshop/Studio don't support -m64,
|
||||
# but newer ones do. Check for it.
|
||||
flag64=`$CC -flags | egrep -- '^-m64'`
|
||||
if test x"$flag64" != x"" ; then
|
||||
CFLAGS="${CFLAGS} -m64"
|
||||
SFLAGS="${SFLAGS} -m64"
|
||||
else
|
||||
case `(uname -m || echo unknown) 2>/dev/null` in
|
||||
i86*)
|
||||
SFLAGS="$SFLAGS -xarch=amd64"
|
||||
CFLAGS="$CFLAGS -xarch=amd64" ;;
|
||||
*)
|
||||
SFLAGS="$SFLAGS -xarch=v9"
|
||||
CFLAGS="$CFLAGS -xarch=v9" ;;
|
||||
esac
|
||||
fi
|
||||
fi
|
||||
;;
|
||||
SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
|
||||
CFLAGS=${CFLAGS-"-O2"}
|
||||
LDSHARED=${LDSHARED-"ld"} ;;
|
||||
SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
|
||||
CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
|
||||
LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
|
||||
UNIX_System_V\ 4.2.0)
|
||||
SFLAGS=${CFLAGS-"-KPIC -O"}
|
||||
CFLAGS=${CFLAGS-"-O"}
|
||||
LDSHARED=${LDSHARED-"cc -G"} ;;
|
||||
UNIX_SV\ 4.2MP)
|
||||
SFLAGS=${CFLAGS-"-Kconform_pic -O"}
|
||||
CFLAGS=${CFLAGS-"-O"}
|
||||
LDSHARED=${LDSHARED-"cc -G"} ;;
|
||||
OpenUNIX\ 5)
|
||||
SFLAGS=${CFLAGS-"-KPIC -O"}
|
||||
CFLAGS=${CFLAGS-"-O"}
|
||||
LDSHARED=${LDSHARED-"cc -G"} ;;
|
||||
AIX*) # Courtesy of dbakker@arrayasolutions.com
|
||||
SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
|
||||
CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
|
||||
LDSHARED=${LDSHARED-"xlc -G"} ;;
|
||||
# send working options for other systems to zlib@gzip.org
|
||||
*) SFLAGS=${CFLAGS-"-O"}
|
||||
CFLAGS=${CFLAGS-"-O"}
|
||||
LDSHARED=${LDSHARED-"cc -shared"} ;;
|
||||
esac
|
||||
fi
|
||||
|
||||
# destination names for shared library if not defined above
|
||||
SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
|
||||
SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
|
||||
SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# define functions for testing compiler and library characteristics and logging the results
|
||||
|
||||
cat > $test.c <<EOF
|
||||
#error error
|
||||
EOF
|
||||
if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
|
||||
try()
|
||||
{
|
||||
show $*
|
||||
test "`( $* ) 2>&1 | tee -a configure.log`" = ""
|
||||
}
|
||||
echo - using any output from compiler to indicate an error >> configure.log
|
||||
else
|
||||
try()
|
||||
{
|
||||
show $*
|
||||
( $* ) >> configure.log 2>&1
|
||||
ret=$?
|
||||
if test $ret -ne 0; then
|
||||
echo "(exit code "$ret")" >> configure.log
|
||||
fi
|
||||
return $ret
|
||||
}
|
||||
fi
|
||||
|
||||
tryboth()
|
||||
{
|
||||
show $*
|
||||
got=`( $* ) 2>&1`
|
||||
ret=$?
|
||||
printf %s "$got" >> configure.log
|
||||
if test $ret -ne 0; then
|
||||
return $ret
|
||||
fi
|
||||
test "$got" = ""
|
||||
}
|
||||
|
||||
cat > $test.c << EOF
|
||||
int foo() { return 0; }
|
||||
EOF
|
||||
echo "Checking for obsessive-compulsive compiler options..." >> configure.log
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
:
|
||||
else
|
||||
echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
|
||||
leave 1
|
||||
fi
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# see if shared library build supported
|
||||
cat > $test.c <<EOF
|
||||
extern int getchar();
|
||||
int hello() {return getchar();}
|
||||
EOF
|
||||
if test $shared -eq 1; then
|
||||
echo Checking for shared library support... | tee -a configure.log
|
||||
# we must test in two steps (cc then ld), required at least on SunOS 4.x
|
||||
if try $CC -w -c $SFLAGS $test.c &&
|
||||
try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
|
||||
echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
|
||||
elif test -z "$old_cc" -a -z "$old_cflags"; then
|
||||
echo No shared library support. | tee -a configure.log
|
||||
shared=0;
|
||||
else
|
||||
echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
|
||||
shared=0;
|
||||
fi
|
||||
fi
|
||||
if test $shared -eq 0; then
|
||||
LDSHARED="$CC"
|
||||
ALL="static"
|
||||
TEST="all teststatic"
|
||||
SHAREDLIB=""
|
||||
SHAREDLIBV=""
|
||||
SHAREDLIBM=""
|
||||
echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
|
||||
else
|
||||
ALL="static shared"
|
||||
TEST="all teststatic testshared"
|
||||
fi
|
||||
|
||||
# check for underscores in external names for use by assembler code
|
||||
CPP=${CPP-"$CC -E"}
|
||||
case $CFLAGS in
|
||||
*ASMV*)
|
||||
echo >> configure.log
|
||||
show "$NM $test.o | grep _hello"
|
||||
if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
|
||||
CPP="$CPP -DNO_UNDERLINE"
|
||||
echo Checking for underline in external names... No. | tee -a configure.log
|
||||
else
|
||||
echo Checking for underline in external names... Yes. | tee -a configure.log
|
||||
fi ;;
|
||||
esac
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# check for large file support, and if none, check for fseeko()
|
||||
cat > $test.c <<EOF
|
||||
#include <sys/types.h>
|
||||
off64_t dummy = 0;
|
||||
EOF
|
||||
if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
|
||||
CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
|
||||
SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
|
||||
ALL="${ALL} all64"
|
||||
TEST="${TEST} test64"
|
||||
echo "Checking for off64_t... Yes." | tee -a configure.log
|
||||
echo "Checking for fseeko... Yes." | tee -a configure.log
|
||||
else
|
||||
echo "Checking for off64_t... No." | tee -a configure.log
|
||||
echo >> configure.log
|
||||
cat > $test.c <<EOF
|
||||
#include <stdio.h>
|
||||
int main(void) {
|
||||
fseeko(NULL, 0, 0);
|
||||
return 0;
|
||||
}
|
||||
EOF
|
||||
if try $CC $CFLAGS -o $test $test.c; then
|
||||
echo "Checking for fseeko... Yes." | tee -a configure.log
|
||||
else
|
||||
CFLAGS="${CFLAGS} -DNO_FSEEKO"
|
||||
SFLAGS="${SFLAGS} -DNO_FSEEKO"
|
||||
echo "Checking for fseeko... No." | tee -a configure.log
|
||||
fi
|
||||
fi
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# check for strerror() for use by gz* functions
|
||||
cat > $test.c <<EOF
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
int main() { return strlen(strerror(errno)); }
|
||||
EOF
|
||||
if try $CC $CFLAGS -o $test $test.c; then
|
||||
echo "Checking for strerror... Yes." | tee -a configure.log
|
||||
else
|
||||
CFLAGS="${CFLAGS} -DNO_STRERROR"
|
||||
SFLAGS="${SFLAGS} -DNO_STRERROR"
|
||||
echo "Checking for strerror... No." | tee -a configure.log
|
||||
fi
|
||||
|
||||
# copy clean zconf.h for subsequent edits
|
||||
cp -p zconf.h.in zconf.h
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# check for unistd.h and save result in zconf.h
|
||||
cat > $test.c <<EOF
|
||||
#include <unistd.h>
|
||||
int main() { return 0; }
|
||||
EOF
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
|
||||
mv zconf.temp.h zconf.h
|
||||
echo "Checking for unistd.h... Yes." | tee -a configure.log
|
||||
else
|
||||
echo "Checking for unistd.h... No." | tee -a configure.log
|
||||
fi
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# check for stdarg.h and save result in zconf.h
|
||||
cat > $test.c <<EOF
|
||||
#include <stdarg.h>
|
||||
int main() { return 0; }
|
||||
EOF
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
|
||||
mv zconf.temp.h zconf.h
|
||||
echo "Checking for stdarg.h... Yes." | tee -a configure.log
|
||||
else
|
||||
echo "Checking for stdarg.h... No." | tee -a configure.log
|
||||
fi
|
||||
|
||||
# if the z_ prefix was requested, save that in zconf.h
|
||||
if test $zprefix -eq 1; then
|
||||
sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
|
||||
mv zconf.temp.h zconf.h
|
||||
echo >> configure.log
|
||||
echo "Using z_ prefix on all symbols." | tee -a configure.log
|
||||
fi
|
||||
|
||||
# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
|
||||
if test $solo -eq 1; then
|
||||
sed '/#define ZCONF_H/a\
|
||||
#define Z_SOLO
|
||||
|
||||
' < zconf.h > zconf.temp.h
|
||||
mv zconf.temp.h zconf.h
|
||||
OBJC='$(OBJZ)'
|
||||
PIC_OBJC='$(PIC_OBJZ)'
|
||||
fi
|
||||
|
||||
# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
|
||||
if test $cover -eq 1; then
|
||||
CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
|
||||
if test -n "$GCC_CLASSIC"; then
|
||||
CC=$GCC_CLASSIC
|
||||
fi
|
||||
fi
|
||||
|
||||
echo >> configure.log
|
||||
|
||||
# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
|
||||
# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
|
||||
# return value. The most secure result is vsnprintf() with a return value. snprintf() with a
|
||||
# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
|
||||
cat > $test.c <<EOF
|
||||
#include <stdio.h>
|
||||
#include <stdarg.h>
|
||||
#include "zconf.h"
|
||||
int main()
|
||||
{
|
||||
#ifndef STDC
|
||||
choke me
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
EOF
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
|
||||
|
||||
echo >> configure.log
|
||||
cat > $test.c <<EOF
|
||||
#include <stdio.h>
|
||||
#include <stdarg.h>
|
||||
int mytest(const char *fmt, ...)
|
||||
{
|
||||
char buf[20];
|
||||
va_list ap;
|
||||
va_start(ap, fmt);
|
||||
vsnprintf(buf, sizeof(buf), fmt, ap);
|
||||
va_end(ap);
|
||||
return 0;
|
||||
}
|
||||
int main()
|
||||
{
|
||||
return (mytest("Hello%d\n", 1));
|
||||
}
|
||||
EOF
|
||||
if try $CC $CFLAGS -o $test $test.c; then
|
||||
echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
|
||||
|
||||
echo >> configure.log
|
||||
cat >$test.c <<EOF
|
||||
#include <stdio.h>
|
||||
#include <stdarg.h>
|
||||
int mytest(const char *fmt, ...)
|
||||
{
|
||||
int n;
|
||||
char buf[20];
|
||||
va_list ap;
|
||||
va_start(ap, fmt);
|
||||
n = vsnprintf(buf, sizeof(buf), fmt, ap);
|
||||
va_end(ap);
|
||||
return n;
|
||||
}
|
||||
int main()
|
||||
{
|
||||
return (mytest("Hello%d\n", 1));
|
||||
}
|
||||
EOF
|
||||
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
|
||||
else
|
||||
CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
|
||||
SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
|
||||
echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
|
||||
echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
|
||||
echo " can build but will be open to possible string-format security" | tee -a configure.log
|
||||
echo " vulnerabilities." | tee -a configure.log
|
||||
fi
|
||||
else
|
||||
CFLAGS="$CFLAGS -DNO_vsnprintf"
|
||||
SFLAGS="$SFLAGS -DNO_vsnprintf"
|
||||
echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
|
||||
echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
|
||||
echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
|
||||
echo " vulnerabilities." | tee -a configure.log
|
||||
|
||||
echo >> configure.log
|
||||
cat >$test.c <<EOF
|
||||
#include <stdio.h>
|
||||
#include <stdarg.h>
|
||||
int mytest(const char *fmt, ...)
|
||||
{
|
||||
int n;
|
||||
char buf[20];
|
||||
va_list ap;
|
||||
va_start(ap, fmt);
|
||||
n = vsprintf(buf, fmt, ap);
|
||||
va_end(ap);
|
||||
return n;
|
||||
}
|
||||
int main()
|
||||
{
|
||||
return (mytest("Hello%d\n", 1));
|
||||
}
|
||||
EOF
|
||||
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
|
||||
else
|
||||
CFLAGS="$CFLAGS -DHAS_vsprintf_void"
|
||||
SFLAGS="$SFLAGS -DHAS_vsprintf_void"
|
||||
echo "Checking for return value of vsprintf()... No." | tee -a configure.log
|
||||
echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
|
||||
echo " can build but will be open to possible string-format security" | tee -a configure.log
|
||||
echo " vulnerabilities." | tee -a configure.log
|
||||
fi
|
||||
fi
|
||||
else
|
||||
echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
|
||||
|
||||
echo >> configure.log
|
||||
cat >$test.c <<EOF
|
||||
#include <stdio.h>
|
||||
int mytest()
|
||||
{
|
||||
char buf[20];
|
||||
snprintf(buf, sizeof(buf), "%s", "foo");
|
||||
return 0;
|
||||
}
|
||||
int main()
|
||||
{
|
||||
return (mytest());
|
||||
}
|
||||
EOF
|
||||
|
||||
if try $CC $CFLAGS -o $test $test.c; then
|
||||
echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
|
||||
|
||||
echo >> configure.log
|
||||
cat >$test.c <<EOF
|
||||
#include <stdio.h>
|
||||
int mytest()
|
||||
{
|
||||
char buf[20];
|
||||
return snprintf(buf, sizeof(buf), "%s", "foo");
|
||||
}
|
||||
int main()
|
||||
{
|
||||
return (mytest());
|
||||
}
|
||||
EOF
|
||||
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
|
||||
else
|
||||
CFLAGS="$CFLAGS -DHAS_snprintf_void"
|
||||
SFLAGS="$SFLAGS -DHAS_snprintf_void"
|
||||
echo "Checking for return value of snprintf()... No." | tee -a configure.log
|
||||
echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
|
||||
echo " can build but will be open to possible string-format security" | tee -a configure.log
|
||||
echo " vulnerabilities." | tee -a configure.log
|
||||
fi
|
||||
else
|
||||
CFLAGS="$CFLAGS -DNO_snprintf"
|
||||
SFLAGS="$SFLAGS -DNO_snprintf"
|
||||
echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
|
||||
echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
|
||||
echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
|
||||
echo " vulnerabilities." | tee -a configure.log
|
||||
|
||||
echo >> configure.log
|
||||
cat >$test.c <<EOF
|
||||
#include <stdio.h>
|
||||
int mytest()
|
||||
{
|
||||
char buf[20];
|
||||
return sprintf(buf, "%s", "foo");
|
||||
}
|
||||
int main()
|
||||
{
|
||||
return (mytest());
|
||||
}
|
||||
EOF
|
||||
|
||||
if try $CC -c $CFLAGS $test.c; then
|
||||
echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
|
||||
else
|
||||
CFLAGS="$CFLAGS -DHAS_sprintf_void"
|
||||
SFLAGS="$SFLAGS -DHAS_sprintf_void"
|
||||
echo "Checking for return value of sprintf()... No." | tee -a configure.log
|
||||
echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
|
||||
echo " can build but will be open to possible string-format security" | tee -a configure.log
|
||||
echo " vulnerabilities." | tee -a configure.log
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
# see if we can hide zlib internal symbols that are linked between separate source files
|
||||
if test "$gcc" -eq 1; then
|
||||
echo >> configure.log
|
||||
cat > $test.c <<EOF
|
||||
#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
|
||||
int ZLIB_INTERNAL foo;
|
||||
int main()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
EOF
|
||||
if tryboth $CC -c $CFLAGS $test.c; then
|
||||
CFLAGS="$CFLAGS -DHAVE_HIDDEN"
|
||||
SFLAGS="$SFLAGS -DHAVE_HIDDEN"
|
||||
echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
|
||||
else
|
||||
echo "Checking for attribute(visibility) support... No." | tee -a configure.log
|
||||
fi
|
||||
fi
|
||||
|
||||
# show the results in the log
|
||||
echo >> configure.log
|
||||
echo ALL = $ALL >> configure.log
|
||||
echo AR = $AR >> configure.log
|
||||
echo ARFLAGS = $ARFLAGS >> configure.log
|
||||
echo CC = $CC >> configure.log
|
||||
echo CFLAGS = $CFLAGS >> configure.log
|
||||
echo CPP = $CPP >> configure.log
|
||||
echo EXE = $EXE >> configure.log
|
||||
echo LDCONFIG = $LDCONFIG >> configure.log
|
||||
echo LDFLAGS = $LDFLAGS >> configure.log
|
||||
echo LDSHARED = $LDSHARED >> configure.log
|
||||
echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
|
||||
echo OBJC = $OBJC >> configure.log
|
||||
echo PIC_OBJC = $PIC_OBJC >> configure.log
|
||||
echo RANLIB = $RANLIB >> configure.log
|
||||
echo SFLAGS = $SFLAGS >> configure.log
|
||||
echo SHAREDLIB = $SHAREDLIB >> configure.log
|
||||
echo SHAREDLIBM = $SHAREDLIBM >> configure.log
|
||||
echo SHAREDLIBV = $SHAREDLIBV >> configure.log
|
||||
echo STATICLIB = $STATICLIB >> configure.log
|
||||
echo TEST = $TEST >> configure.log
|
||||
echo VER = $VER >> configure.log
|
||||
echo Z_U4 = $Z_U4 >> configure.log
|
||||
echo exec_prefix = $exec_prefix >> configure.log
|
||||
echo includedir = $includedir >> configure.log
|
||||
echo libdir = $libdir >> configure.log
|
||||
echo mandir = $mandir >> configure.log
|
||||
echo prefix = $prefix >> configure.log
|
||||
echo sharedlibdir = $sharedlibdir >> configure.log
|
||||
echo uname = $uname >> configure.log
|
||||
|
||||
# udpate Makefile with the configure results
|
||||
sed < Makefile.in "
|
||||
/^CC *=/s#=.*#=$CC#
|
||||
/^CFLAGS *=/s#=.*#=$CFLAGS#
|
||||
/^SFLAGS *=/s#=.*#=$SFLAGS#
|
||||
/^LDFLAGS *=/s#=.*#=$LDFLAGS#
|
||||
/^LDSHARED *=/s#=.*#=$LDSHARED#
|
||||
/^CPP *=/s#=.*#=$CPP#
|
||||
/^STATICLIB *=/s#=.*#=$STATICLIB#
|
||||
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
|
||||
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
|
||||
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
|
||||
/^AR *=/s#=.*#=$AR#
|
||||
/^ARFLAGS *=/s#=.*#=$ARFLAGS#
|
||||
/^RANLIB *=/s#=.*#=$RANLIB#
|
||||
/^LDCONFIG *=/s#=.*#=$LDCONFIG#
|
||||
/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
|
||||
/^EXE *=/s#=.*#=$EXE#
|
||||
/^prefix *=/s#=.*#=$prefix#
|
||||
/^exec_prefix *=/s#=.*#=$exec_prefix#
|
||||
/^libdir *=/s#=.*#=$libdir#
|
||||
/^sharedlibdir *=/s#=.*#=$sharedlibdir#
|
||||
/^includedir *=/s#=.*#=$includedir#
|
||||
/^mandir *=/s#=.*#=$mandir#
|
||||
/^OBJC *=/s#=.*#= $OBJC#
|
||||
/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
|
||||
/^all: */s#:.*#: $ALL#
|
||||
/^test: */s#:.*#: $TEST#
|
||||
" > Makefile
|
||||
|
||||
# create zlib.pc with the configure results
|
||||
sed < zlib.pc.in "
|
||||
/^CC *=/s#=.*#=$CC#
|
||||
/^CFLAGS *=/s#=.*#=$CFLAGS#
|
||||
/^CPP *=/s#=.*#=$CPP#
|
||||
/^LDSHARED *=/s#=.*#=$LDSHARED#
|
||||
/^STATICLIB *=/s#=.*#=$STATICLIB#
|
||||
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
|
||||
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
|
||||
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
|
||||
/^AR *=/s#=.*#=$AR#
|
||||
/^ARFLAGS *=/s#=.*#=$ARFLAGS#
|
||||
/^RANLIB *=/s#=.*#=$RANLIB#
|
||||
/^EXE *=/s#=.*#=$EXE#
|
||||
/^prefix *=/s#=.*#=$prefix#
|
||||
/^exec_prefix *=/s#=.*#=$exec_prefix#
|
||||
/^libdir *=/s#=.*#=$libdir#
|
||||
/^sharedlibdir *=/s#=.*#=$sharedlibdir#
|
||||
/^includedir *=/s#=.*#=$includedir#
|
||||
/^mandir *=/s#=.*#=$mandir#
|
||||
/^LDFLAGS *=/s#=.*#=$LDFLAGS#
|
||||
" | sed -e "
|
||||
s/\@VERSION\@/$VER/g;
|
||||
" > zlib.pc
|
||||
|
||||
# done
|
||||
leave 0
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
All files under this contrib directory are UNSUPPORTED. There were
|
||||
provided by users of zlib and were not tested by the authors of zlib.
|
||||
Use at your own risk. Please contact the authors of the contributions
|
||||
for help about these, not the zlib authors. Thanks.
|
||||
|
||||
|
||||
ada/ by Dmitriy Anisimkov <anisimkov@yahoo.com>
|
||||
Support for Ada
|
||||
See http://zlib-ada.sourceforge.net/
|
||||
|
||||
amd64/ by Mikhail Teterin <mi@ALDAN.algebra.com>
|
||||
asm code for AMD64
|
||||
See patch at http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/96393
|
||||
|
||||
asm686/ by Brian Raiter <breadbox@muppetlabs.com>
|
||||
asm code for Pentium and PPro/PII, using the AT&T (GNU as) syntax
|
||||
See http://www.muppetlabs.com/~breadbox/software/assembly.html
|
||||
|
||||
blast/ by Mark Adler <madler@alumni.caltech.edu>
|
||||
Decompressor for output of PKWare Data Compression Library (DCL)
|
||||
|
||||
delphi/ by Cosmin Truta <cosmint@cs.ubbcluj.ro>
|
||||
Support for Delphi and C++ Builder
|
||||
|
||||
dotzlib/ by Henrik Ravn <henrik@ravn.com>
|
||||
Support for Microsoft .Net and Visual C++ .Net
|
||||
|
||||
gcc_gvmat64/by Gilles Vollant <info@winimage.com>
|
||||
GCC Version of x86 64-bit (AMD64 and Intel EM64t) code for x64
|
||||
assembler to replace longest_match() and inflate_fast()
|
||||
|
||||
infback9/ by Mark Adler <madler@alumni.caltech.edu>
|
||||
Unsupported diffs to infback to decode the deflate64 format
|
||||
|
||||
inflate86/ by Chris Anderson <christop@charm.net>
|
||||
Tuned x86 gcc asm code to replace inflate_fast()
|
||||
|
||||
iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
|
||||
A C++ I/O streams interface to the zlib gz* functions
|
||||
|
||||
iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no>
|
||||
Another C++ I/O streams interface
|
||||
|
||||
iostream3/ by Ludwig Schwardt <schwardt@sun.ac.za>
|
||||
and Kevin Ruland <kevin@rodin.wustl.edu>
|
||||
Yet another C++ I/O streams interface
|
||||
|
||||
masmx64/ by Gilles Vollant <info@winimage.com>
|
||||
x86 64-bit (AMD64 and Intel EM64t) code for x64 assembler to
|
||||
replace longest_match() and inflate_fast(), also masm x86
|
||||
64-bits translation of Chris Anderson inflate_fast()
|
||||
|
||||
masmx86/ by Gilles Vollant <info@winimage.com>
|
||||
x86 asm code to replace longest_match() and inflate_fast(),
|
||||
for Visual C++ and MASM (32 bits).
|
||||
Based on Brian Raiter (asm686) and Chris Anderson (inflate86)
|
||||
|
||||
minizip/ by Gilles Vollant <info@winimage.com>
|
||||
Mini zip and unzip based on zlib
|
||||
Includes Zip64 support by Mathias Svensson <mathias@result42.com>
|
||||
See http://www.winimage.com/zLibDll/unzip.html
|
||||
|
||||
pascal/ by Bob Dellaca <bobdl@xtra.co.nz> et al.
|
||||
Support for Pascal
|
||||
|
||||
puff/ by Mark Adler <madler@alumni.caltech.edu>
|
||||
Small, low memory usage inflate. Also serves to provide an
|
||||
unambiguous description of the deflate format.
|
||||
|
||||
testzlib/ by Gilles Vollant <info@winimage.com>
|
||||
Example of the use of zlib
|
||||
|
||||
untgz/ by Pedro A. Aranda Gutierrez <paag@tid.es>
|
||||
A very simple tar.gz file extractor using zlib
|
||||
|
||||
vstudio/ by Gilles Vollant <info@winimage.com>
|
||||
Building a minizip-enhanced zlib with Microsoft Visual Studio
|
||||
Includes vc11 from kreuzerkrieg and vc12 from davispuh
|
||||
|
|
@ -0,0 +1,106 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2004 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
--
|
||||
-- $Id: buffer_demo.adb,v 1.3 2004/09/06 06:55:35 vagul Exp $
|
||||
|
||||
-- This demo program provided by Dr Steve Sangwine <sjs@essex.ac.uk>
|
||||
--
|
||||
-- Demonstration of a problem with Zlib-Ada (already fixed) when a buffer
|
||||
-- of exactly the correct size is used for decompressed data, and the last
|
||||
-- few bytes passed in to Zlib are checksum bytes.
|
||||
|
||||
-- This program compresses a string of text, and then decompresses the
|
||||
-- compressed text into a buffer of the same size as the original text.
|
||||
|
||||
with Ada.Streams; use Ada.Streams;
|
||||
with Ada.Text_IO;
|
||||
|
||||
with ZLib; use ZLib;
|
||||
|
||||
procedure Buffer_Demo is
|
||||
EOL : Character renames ASCII.LF;
|
||||
Text : constant String
|
||||
:= "Four score and seven years ago our fathers brought forth," & EOL &
|
||||
"upon this continent, a new nation, conceived in liberty," & EOL &
|
||||
"and dedicated to the proposition that `all men are created equal'.";
|
||||
|
||||
Source : Stream_Element_Array (1 .. Text'Length);
|
||||
for Source'Address use Text'Address;
|
||||
|
||||
begin
|
||||
Ada.Text_IO.Put (Text);
|
||||
Ada.Text_IO.New_Line;
|
||||
Ada.Text_IO.Put_Line
|
||||
("Uncompressed size : " & Positive'Image (Text'Length) & " bytes");
|
||||
|
||||
declare
|
||||
Compressed_Data : Stream_Element_Array (1 .. Text'Length);
|
||||
L : Stream_Element_Offset;
|
||||
begin
|
||||
Compress : declare
|
||||
Compressor : Filter_Type;
|
||||
I : Stream_Element_Offset;
|
||||
begin
|
||||
Deflate_Init (Compressor);
|
||||
|
||||
-- Compress the whole of T at once.
|
||||
|
||||
Translate (Compressor, Source, I, Compressed_Data, L, Finish);
|
||||
pragma Assert (I = Source'Last);
|
||||
|
||||
Close (Compressor);
|
||||
|
||||
Ada.Text_IO.Put_Line
|
||||
("Compressed size : "
|
||||
& Stream_Element_Offset'Image (L) & " bytes");
|
||||
end Compress;
|
||||
|
||||
-- Now we decompress the data, passing short blocks of data to Zlib
|
||||
-- (because this demonstrates the problem - the last block passed will
|
||||
-- contain checksum information and there will be no output, only a
|
||||
-- check inside Zlib that the checksum is correct).
|
||||
|
||||
Decompress : declare
|
||||
Decompressor : Filter_Type;
|
||||
|
||||
Uncompressed_Data : Stream_Element_Array (1 .. Text'Length);
|
||||
|
||||
Block_Size : constant := 4;
|
||||
-- This makes sure that the last block contains
|
||||
-- only Adler checksum data.
|
||||
|
||||
P : Stream_Element_Offset := Compressed_Data'First - 1;
|
||||
O : Stream_Element_Offset;
|
||||
begin
|
||||
Inflate_Init (Decompressor);
|
||||
|
||||
loop
|
||||
Translate
|
||||
(Decompressor,
|
||||
Compressed_Data
|
||||
(P + 1 .. Stream_Element_Offset'Min (P + Block_Size, L)),
|
||||
P,
|
||||
Uncompressed_Data
|
||||
(Total_Out (Decompressor) + 1 .. Uncompressed_Data'Last),
|
||||
O,
|
||||
No_Flush);
|
||||
|
||||
Ada.Text_IO.Put_Line
|
||||
("Total in : " & Count'Image (Total_In (Decompressor)) &
|
||||
", out : " & Count'Image (Total_Out (Decompressor)));
|
||||
|
||||
exit when P = L;
|
||||
end loop;
|
||||
|
||||
Ada.Text_IO.New_Line;
|
||||
Ada.Text_IO.Put_Line
|
||||
("Decompressed text matches original text : "
|
||||
& Boolean'Image (Uncompressed_Data = Source));
|
||||
end Decompress;
|
||||
end;
|
||||
end Buffer_Demo;
|
||||
|
|
@ -0,0 +1,156 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
-- Continuous test for ZLib multithreading. If the test would fail
|
||||
-- we should provide thread safe allocation routines for the Z_Stream.
|
||||
--
|
||||
-- $Id: mtest.adb,v 1.4 2004/07/23 07:49:54 vagul Exp $
|
||||
|
||||
with ZLib;
|
||||
with Ada.Streams;
|
||||
with Ada.Numerics.Discrete_Random;
|
||||
with Ada.Text_IO;
|
||||
with Ada.Exceptions;
|
||||
with Ada.Task_Identification;
|
||||
|
||||
procedure MTest is
|
||||
use Ada.Streams;
|
||||
use ZLib;
|
||||
|
||||
Stop : Boolean := False;
|
||||
|
||||
pragma Atomic (Stop);
|
||||
|
||||
subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
|
||||
|
||||
package Random_Elements is
|
||||
new Ada.Numerics.Discrete_Random (Visible_Symbols);
|
||||
|
||||
task type Test_Task;
|
||||
|
||||
task body Test_Task is
|
||||
Buffer : Stream_Element_Array (1 .. 100_000);
|
||||
Gen : Random_Elements.Generator;
|
||||
|
||||
Buffer_First : Stream_Element_Offset;
|
||||
Compare_First : Stream_Element_Offset;
|
||||
|
||||
Deflate : Filter_Type;
|
||||
Inflate : Filter_Type;
|
||||
|
||||
procedure Further (Item : in Stream_Element_Array);
|
||||
|
||||
procedure Read_Buffer
|
||||
(Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset);
|
||||
|
||||
-------------
|
||||
-- Further --
|
||||
-------------
|
||||
|
||||
procedure Further (Item : in Stream_Element_Array) is
|
||||
|
||||
procedure Compare (Item : in Stream_Element_Array);
|
||||
|
||||
-------------
|
||||
-- Compare --
|
||||
-------------
|
||||
|
||||
procedure Compare (Item : in Stream_Element_Array) is
|
||||
Next_First : Stream_Element_Offset := Compare_First + Item'Length;
|
||||
begin
|
||||
if Buffer (Compare_First .. Next_First - 1) /= Item then
|
||||
raise Program_Error;
|
||||
end if;
|
||||
|
||||
Compare_First := Next_First;
|
||||
end Compare;
|
||||
|
||||
procedure Compare_Write is new ZLib.Write (Write => Compare);
|
||||
begin
|
||||
Compare_Write (Inflate, Item, No_Flush);
|
||||
end Further;
|
||||
|
||||
-----------------
|
||||
-- Read_Buffer --
|
||||
-----------------
|
||||
|
||||
procedure Read_Buffer
|
||||
(Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset)
|
||||
is
|
||||
Buff_Diff : Stream_Element_Offset := Buffer'Last - Buffer_First;
|
||||
Next_First : Stream_Element_Offset;
|
||||
begin
|
||||
if Item'Length <= Buff_Diff then
|
||||
Last := Item'Last;
|
||||
|
||||
Next_First := Buffer_First + Item'Length;
|
||||
|
||||
Item := Buffer (Buffer_First .. Next_First - 1);
|
||||
|
||||
Buffer_First := Next_First;
|
||||
else
|
||||
Last := Item'First + Buff_Diff;
|
||||
Item (Item'First .. Last) := Buffer (Buffer_First .. Buffer'Last);
|
||||
Buffer_First := Buffer'Last + 1;
|
||||
end if;
|
||||
end Read_Buffer;
|
||||
|
||||
procedure Translate is new Generic_Translate
|
||||
(Data_In => Read_Buffer,
|
||||
Data_Out => Further);
|
||||
|
||||
begin
|
||||
Random_Elements.Reset (Gen);
|
||||
|
||||
Buffer := (others => 20);
|
||||
|
||||
Main : loop
|
||||
for J in Buffer'Range loop
|
||||
Buffer (J) := Random_Elements.Random (Gen);
|
||||
|
||||
Deflate_Init (Deflate);
|
||||
Inflate_Init (Inflate);
|
||||
|
||||
Buffer_First := Buffer'First;
|
||||
Compare_First := Buffer'First;
|
||||
|
||||
Translate (Deflate);
|
||||
|
||||
if Compare_First /= Buffer'Last + 1 then
|
||||
raise Program_Error;
|
||||
end if;
|
||||
|
||||
Ada.Text_IO.Put_Line
|
||||
(Ada.Task_Identification.Image
|
||||
(Ada.Task_Identification.Current_Task)
|
||||
& Stream_Element_Offset'Image (J)
|
||||
& ZLib.Count'Image (Total_Out (Deflate)));
|
||||
|
||||
Close (Deflate);
|
||||
Close (Inflate);
|
||||
|
||||
exit Main when Stop;
|
||||
end loop;
|
||||
end loop Main;
|
||||
exception
|
||||
when E : others =>
|
||||
Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
|
||||
Stop := True;
|
||||
end Test_Task;
|
||||
|
||||
Test : array (1 .. 4) of Test_Task;
|
||||
|
||||
pragma Unreferenced (Test);
|
||||
|
||||
Dummy : Character;
|
||||
|
||||
begin
|
||||
Ada.Text_IO.Get_Immediate (Dummy);
|
||||
Stop := True;
|
||||
end MTest;
|
||||
|
|
@ -0,0 +1,156 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: read.adb,v 1.8 2004/05/31 10:53:40 vagul Exp $
|
||||
|
||||
-- Test/demo program for the generic read interface.
|
||||
|
||||
with Ada.Numerics.Discrete_Random;
|
||||
with Ada.Streams;
|
||||
with Ada.Text_IO;
|
||||
|
||||
with ZLib;
|
||||
|
||||
procedure Read is
|
||||
|
||||
use Ada.Streams;
|
||||
|
||||
------------------------------------
|
||||
-- Test configuration parameters --
|
||||
------------------------------------
|
||||
|
||||
File_Size : Stream_Element_Offset := 100_000;
|
||||
|
||||
Continuous : constant Boolean := False;
|
||||
-- If this constant is True, the test would be repeated again and again,
|
||||
-- with increment File_Size for every iteration.
|
||||
|
||||
Header : constant ZLib.Header_Type := ZLib.Default;
|
||||
-- Do not use Header other than Default in ZLib versions 1.1.4 and older.
|
||||
|
||||
Init_Random : constant := 8;
|
||||
-- We are using the same random sequence, in case of we catch bug,
|
||||
-- so we would be able to reproduce it.
|
||||
|
||||
-- End --
|
||||
|
||||
Pack_Size : Stream_Element_Offset;
|
||||
Offset : Stream_Element_Offset;
|
||||
|
||||
Filter : ZLib.Filter_Type;
|
||||
|
||||
subtype Visible_Symbols
|
||||
is Stream_Element range 16#20# .. 16#7E#;
|
||||
|
||||
package Random_Elements is new
|
||||
Ada.Numerics.Discrete_Random (Visible_Symbols);
|
||||
|
||||
Gen : Random_Elements.Generator;
|
||||
Period : constant Stream_Element_Offset := 200;
|
||||
-- Period constant variable for random generator not to be very random.
|
||||
-- Bigger period, harder random.
|
||||
|
||||
Read_Buffer : Stream_Element_Array (1 .. 2048);
|
||||
Read_First : Stream_Element_Offset;
|
||||
Read_Last : Stream_Element_Offset;
|
||||
|
||||
procedure Reset;
|
||||
|
||||
procedure Read
|
||||
(Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset);
|
||||
-- this procedure is for generic instantiation of
|
||||
-- ZLib.Read
|
||||
-- reading data from the File_In.
|
||||
|
||||
procedure Read is new ZLib.Read
|
||||
(Read,
|
||||
Read_Buffer,
|
||||
Rest_First => Read_First,
|
||||
Rest_Last => Read_Last);
|
||||
|
||||
----------
|
||||
-- Read --
|
||||
----------
|
||||
|
||||
procedure Read
|
||||
(Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset) is
|
||||
begin
|
||||
Last := Stream_Element_Offset'Min
|
||||
(Item'Last,
|
||||
Item'First + File_Size - Offset);
|
||||
|
||||
for J in Item'First .. Last loop
|
||||
if J < Item'First + Period then
|
||||
Item (J) := Random_Elements.Random (Gen);
|
||||
else
|
||||
Item (J) := Item (J - Period);
|
||||
end if;
|
||||
|
||||
Offset := Offset + 1;
|
||||
end loop;
|
||||
end Read;
|
||||
|
||||
-----------
|
||||
-- Reset --
|
||||
-----------
|
||||
|
||||
procedure Reset is
|
||||
begin
|
||||
Random_Elements.Reset (Gen, Init_Random);
|
||||
Pack_Size := 0;
|
||||
Offset := 1;
|
||||
Read_First := Read_Buffer'Last + 1;
|
||||
Read_Last := Read_Buffer'Last;
|
||||
end Reset;
|
||||
|
||||
begin
|
||||
Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
|
||||
|
||||
loop
|
||||
for Level in ZLib.Compression_Level'Range loop
|
||||
|
||||
Ada.Text_IO.Put ("Level ="
|
||||
& ZLib.Compression_Level'Image (Level));
|
||||
|
||||
-- Deflate using generic instantiation.
|
||||
|
||||
ZLib.Deflate_Init
|
||||
(Filter,
|
||||
Level,
|
||||
Header => Header);
|
||||
|
||||
Reset;
|
||||
|
||||
Ada.Text_IO.Put
|
||||
(Stream_Element_Offset'Image (File_Size) & " ->");
|
||||
|
||||
loop
|
||||
declare
|
||||
Buffer : Stream_Element_Array (1 .. 1024);
|
||||
Last : Stream_Element_Offset;
|
||||
begin
|
||||
Read (Filter, Buffer, Last);
|
||||
|
||||
Pack_Size := Pack_Size + Last - Buffer'First + 1;
|
||||
|
||||
exit when Last < Buffer'Last;
|
||||
end;
|
||||
end loop;
|
||||
|
||||
Ada.Text_IO.Put_Line (Stream_Element_Offset'Image (Pack_Size));
|
||||
|
||||
ZLib.Close (Filter);
|
||||
end loop;
|
||||
|
||||
exit when not Continuous;
|
||||
|
||||
File_Size := File_Size + 1;
|
||||
end loop;
|
||||
end Read;
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
ZLib for Ada thick binding (ZLib.Ada)
|
||||
Release 1.3
|
||||
|
||||
ZLib.Ada is a thick binding interface to the popular ZLib data
|
||||
compression library, available at http://www.gzip.org/zlib/.
|
||||
It provides Ada-style access to the ZLib C library.
|
||||
|
||||
|
||||
Here are the main changes since ZLib.Ada 1.2:
|
||||
|
||||
- Attension: ZLib.Read generic routine have a initialization requirement
|
||||
for Read_Last parameter now. It is a bit incompartible with previous version,
|
||||
but extends functionality, we could use new parameters Allow_Read_Some and
|
||||
Flush now.
|
||||
|
||||
- Added Is_Open routines to ZLib and ZLib.Streams packages.
|
||||
|
||||
- Add pragma Assert to check Stream_Element is 8 bit.
|
||||
|
||||
- Fix extraction to buffer with exact known decompressed size. Error reported by
|
||||
Steve Sangwine.
|
||||
|
||||
- Fix definition of ULong (changed to unsigned_long), fix regression on 64 bits
|
||||
computers. Patch provided by Pascal Obry.
|
||||
|
||||
- Add Status_Error exception definition.
|
||||
|
||||
- Add pragma Assertion that Ada.Streams.Stream_Element size is 8 bit.
|
||||
|
||||
|
||||
How to build ZLib.Ada under GNAT
|
||||
|
||||
You should have the ZLib library already build on your computer, before
|
||||
building ZLib.Ada. Make the directory of ZLib.Ada sources current and
|
||||
issue the command:
|
||||
|
||||
gnatmake test -largs -L<directory where libz.a is> -lz
|
||||
|
||||
Or use the GNAT project file build for GNAT 3.15 or later:
|
||||
|
||||
gnatmake -Pzlib.gpr -L<directory where libz.a is>
|
||||
|
||||
|
||||
How to build ZLib.Ada under Aonix ObjectAda for Win32 7.2.2
|
||||
|
||||
1. Make a project with all *.ads and *.adb files from the distribution.
|
||||
2. Build the libz.a library from the ZLib C sources.
|
||||
3. Rename libz.a to z.lib.
|
||||
4. Add the library z.lib to the project.
|
||||
5. Add the libc.lib library from the ObjectAda distribution to the project.
|
||||
6. Build the executable using test.adb as a main procedure.
|
||||
|
||||
|
||||
How to use ZLib.Ada
|
||||
|
||||
The source files test.adb and read.adb are small demo programs that show
|
||||
the main functionality of ZLib.Ada.
|
||||
|
||||
The routines from the package specifications are commented.
|
||||
|
||||
|
||||
Homepage: http://zlib-ada.sourceforge.net/
|
||||
Author: Dmitriy Anisimkov <anisimkov@yahoo.com>
|
||||
|
||||
Contributors: Pascal Obry <pascal@obry.org>, Steve Sangwine <sjs@essex.ac.uk>
|
||||
|
|
@ -0,0 +1,463 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: test.adb,v 1.17 2003/08/12 12:13:30 vagul Exp $
|
||||
|
||||
-- The program has a few aims.
|
||||
-- 1. Test ZLib.Ada95 thick binding functionality.
|
||||
-- 2. Show the example of use main functionality of the ZLib.Ada95 binding.
|
||||
-- 3. Build this program automatically compile all ZLib.Ada95 packages under
|
||||
-- GNAT Ada95 compiler.
|
||||
|
||||
with ZLib.Streams;
|
||||
with Ada.Streams.Stream_IO;
|
||||
with Ada.Numerics.Discrete_Random;
|
||||
|
||||
with Ada.Text_IO;
|
||||
|
||||
with Ada.Calendar;
|
||||
|
||||
procedure Test is
|
||||
|
||||
use Ada.Streams;
|
||||
use Stream_IO;
|
||||
|
||||
------------------------------------
|
||||
-- Test configuration parameters --
|
||||
------------------------------------
|
||||
|
||||
File_Size : Count := 100_000;
|
||||
Continuous : constant Boolean := False;
|
||||
|
||||
Header : constant ZLib.Header_Type := ZLib.Default;
|
||||
-- ZLib.None;
|
||||
-- ZLib.Auto;
|
||||
-- ZLib.GZip;
|
||||
-- Do not use Header other then Default in ZLib versions 1.1.4
|
||||
-- and older.
|
||||
|
||||
Strategy : constant ZLib.Strategy_Type := ZLib.Default_Strategy;
|
||||
Init_Random : constant := 10;
|
||||
|
||||
-- End --
|
||||
|
||||
In_File_Name : constant String := "testzlib.in";
|
||||
-- Name of the input file
|
||||
|
||||
Z_File_Name : constant String := "testzlib.zlb";
|
||||
-- Name of the compressed file.
|
||||
|
||||
Out_File_Name : constant String := "testzlib.out";
|
||||
-- Name of the decompressed file.
|
||||
|
||||
File_In : File_Type;
|
||||
File_Out : File_Type;
|
||||
File_Back : File_Type;
|
||||
File_Z : ZLib.Streams.Stream_Type;
|
||||
|
||||
Filter : ZLib.Filter_Type;
|
||||
|
||||
Time_Stamp : Ada.Calendar.Time;
|
||||
|
||||
procedure Generate_File;
|
||||
-- Generate file of spetsified size with some random data.
|
||||
-- The random data is repeatable, for the good compression.
|
||||
|
||||
procedure Compare_Streams
|
||||
(Left, Right : in out Root_Stream_Type'Class);
|
||||
-- The procedure compearing data in 2 streams.
|
||||
-- It is for compare data before and after compression/decompression.
|
||||
|
||||
procedure Compare_Files (Left, Right : String);
|
||||
-- Compare files. Based on the Compare_Streams.
|
||||
|
||||
procedure Copy_Streams
|
||||
(Source, Target : in out Root_Stream_Type'Class;
|
||||
Buffer_Size : in Stream_Element_Offset := 1024);
|
||||
-- Copying data from one stream to another. It is for test stream
|
||||
-- interface of the library.
|
||||
|
||||
procedure Data_In
|
||||
(Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset);
|
||||
-- this procedure is for generic instantiation of
|
||||
-- ZLib.Generic_Translate.
|
||||
-- reading data from the File_In.
|
||||
|
||||
procedure Data_Out (Item : in Stream_Element_Array);
|
||||
-- this procedure is for generic instantiation of
|
||||
-- ZLib.Generic_Translate.
|
||||
-- writing data to the File_Out.
|
||||
|
||||
procedure Stamp;
|
||||
-- Store the timestamp to the local variable.
|
||||
|
||||
procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count);
|
||||
-- Print the time statistic with the message.
|
||||
|
||||
procedure Translate is new ZLib.Generic_Translate
|
||||
(Data_In => Data_In,
|
||||
Data_Out => Data_Out);
|
||||
-- This procedure is moving data from File_In to File_Out
|
||||
-- with compression or decompression, depend on initialization of
|
||||
-- Filter parameter.
|
||||
|
||||
-------------------
|
||||
-- Compare_Files --
|
||||
-------------------
|
||||
|
||||
procedure Compare_Files (Left, Right : String) is
|
||||
Left_File, Right_File : File_Type;
|
||||
begin
|
||||
Open (Left_File, In_File, Left);
|
||||
Open (Right_File, In_File, Right);
|
||||
Compare_Streams (Stream (Left_File).all, Stream (Right_File).all);
|
||||
Close (Left_File);
|
||||
Close (Right_File);
|
||||
end Compare_Files;
|
||||
|
||||
---------------------
|
||||
-- Compare_Streams --
|
||||
---------------------
|
||||
|
||||
procedure Compare_Streams
|
||||
(Left, Right : in out Ada.Streams.Root_Stream_Type'Class)
|
||||
is
|
||||
Left_Buffer, Right_Buffer : Stream_Element_Array (0 .. 16#FFF#);
|
||||
Left_Last, Right_Last : Stream_Element_Offset;
|
||||
begin
|
||||
loop
|
||||
Read (Left, Left_Buffer, Left_Last);
|
||||
Read (Right, Right_Buffer, Right_Last);
|
||||
|
||||
if Left_Last /= Right_Last then
|
||||
Ada.Text_IO.Put_Line ("Compare error :"
|
||||
& Stream_Element_Offset'Image (Left_Last)
|
||||
& " /= "
|
||||
& Stream_Element_Offset'Image (Right_Last));
|
||||
|
||||
raise Constraint_Error;
|
||||
|
||||
elsif Left_Buffer (0 .. Left_Last)
|
||||
/= Right_Buffer (0 .. Right_Last)
|
||||
then
|
||||
Ada.Text_IO.Put_Line ("ERROR: IN and OUT files is not equal.");
|
||||
raise Constraint_Error;
|
||||
|
||||
end if;
|
||||
|
||||
exit when Left_Last < Left_Buffer'Last;
|
||||
end loop;
|
||||
end Compare_Streams;
|
||||
|
||||
------------------
|
||||
-- Copy_Streams --
|
||||
------------------
|
||||
|
||||
procedure Copy_Streams
|
||||
(Source, Target : in out Ada.Streams.Root_Stream_Type'Class;
|
||||
Buffer_Size : in Stream_Element_Offset := 1024)
|
||||
is
|
||||
Buffer : Stream_Element_Array (1 .. Buffer_Size);
|
||||
Last : Stream_Element_Offset;
|
||||
begin
|
||||
loop
|
||||
Read (Source, Buffer, Last);
|
||||
Write (Target, Buffer (1 .. Last));
|
||||
|
||||
exit when Last < Buffer'Last;
|
||||
end loop;
|
||||
end Copy_Streams;
|
||||
|
||||
-------------
|
||||
-- Data_In --
|
||||
-------------
|
||||
|
||||
procedure Data_In
|
||||
(Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset) is
|
||||
begin
|
||||
Read (File_In, Item, Last);
|
||||
end Data_In;
|
||||
|
||||
--------------
|
||||
-- Data_Out --
|
||||
--------------
|
||||
|
||||
procedure Data_Out (Item : in Stream_Element_Array) is
|
||||
begin
|
||||
Write (File_Out, Item);
|
||||
end Data_Out;
|
||||
|
||||
-------------------
|
||||
-- Generate_File --
|
||||
-------------------
|
||||
|
||||
procedure Generate_File is
|
||||
subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
|
||||
|
||||
package Random_Elements is
|
||||
new Ada.Numerics.Discrete_Random (Visible_Symbols);
|
||||
|
||||
Gen : Random_Elements.Generator;
|
||||
Buffer : Stream_Element_Array := (1 .. 77 => 16#20#) & 10;
|
||||
|
||||
Buffer_Count : constant Count := File_Size / Buffer'Length;
|
||||
-- Number of same buffers in the packet.
|
||||
|
||||
Density : constant Count := 30; -- from 0 to Buffer'Length - 2;
|
||||
|
||||
procedure Fill_Buffer (J, D : in Count);
|
||||
-- Change the part of the buffer.
|
||||
|
||||
-----------------
|
||||
-- Fill_Buffer --
|
||||
-----------------
|
||||
|
||||
procedure Fill_Buffer (J, D : in Count) is
|
||||
begin
|
||||
for K in 0 .. D loop
|
||||
Buffer
|
||||
(Stream_Element_Offset ((J + K) mod (Buffer'Length - 1) + 1))
|
||||
:= Random_Elements.Random (Gen);
|
||||
|
||||
end loop;
|
||||
end Fill_Buffer;
|
||||
|
||||
begin
|
||||
Random_Elements.Reset (Gen, Init_Random);
|
||||
|
||||
Create (File_In, Out_File, In_File_Name);
|
||||
|
||||
Fill_Buffer (1, Buffer'Length - 2);
|
||||
|
||||
for J in 1 .. Buffer_Count loop
|
||||
Write (File_In, Buffer);
|
||||
|
||||
Fill_Buffer (J, Density);
|
||||
end loop;
|
||||
|
||||
-- fill remain size.
|
||||
|
||||
Write
|
||||
(File_In,
|
||||
Buffer
|
||||
(1 .. Stream_Element_Offset
|
||||
(File_Size - Buffer'Length * Buffer_Count)));
|
||||
|
||||
Flush (File_In);
|
||||
Close (File_In);
|
||||
end Generate_File;
|
||||
|
||||
---------------------
|
||||
-- Print_Statistic --
|
||||
---------------------
|
||||
|
||||
procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count) is
|
||||
use Ada.Calendar;
|
||||
use Ada.Text_IO;
|
||||
|
||||
package Count_IO is new Integer_IO (ZLib.Count);
|
||||
|
||||
Curr_Dur : Duration := Clock - Time_Stamp;
|
||||
begin
|
||||
Put (Msg);
|
||||
|
||||
Set_Col (20);
|
||||
Ada.Text_IO.Put ("size =");
|
||||
|
||||
Count_IO.Put
|
||||
(Data_Size,
|
||||
Width => Stream_IO.Count'Image (File_Size)'Length);
|
||||
|
||||
Put_Line (" duration =" & Duration'Image (Curr_Dur));
|
||||
end Print_Statistic;
|
||||
|
||||
-----------
|
||||
-- Stamp --
|
||||
-----------
|
||||
|
||||
procedure Stamp is
|
||||
begin
|
||||
Time_Stamp := Ada.Calendar.Clock;
|
||||
end Stamp;
|
||||
|
||||
begin
|
||||
Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
|
||||
|
||||
loop
|
||||
Generate_File;
|
||||
|
||||
for Level in ZLib.Compression_Level'Range loop
|
||||
|
||||
Ada.Text_IO.Put_Line ("Level ="
|
||||
& ZLib.Compression_Level'Image (Level));
|
||||
|
||||
-- Test generic interface.
|
||||
Open (File_In, In_File, In_File_Name);
|
||||
Create (File_Out, Out_File, Z_File_Name);
|
||||
|
||||
Stamp;
|
||||
|
||||
-- Deflate using generic instantiation.
|
||||
|
||||
ZLib.Deflate_Init
|
||||
(Filter => Filter,
|
||||
Level => Level,
|
||||
Strategy => Strategy,
|
||||
Header => Header);
|
||||
|
||||
Translate (Filter);
|
||||
Print_Statistic ("Generic compress", ZLib.Total_Out (Filter));
|
||||
ZLib.Close (Filter);
|
||||
|
||||
Close (File_In);
|
||||
Close (File_Out);
|
||||
|
||||
Open (File_In, In_File, Z_File_Name);
|
||||
Create (File_Out, Out_File, Out_File_Name);
|
||||
|
||||
Stamp;
|
||||
|
||||
-- Inflate using generic instantiation.
|
||||
|
||||
ZLib.Inflate_Init (Filter, Header => Header);
|
||||
|
||||
Translate (Filter);
|
||||
Print_Statistic ("Generic decompress", ZLib.Total_Out (Filter));
|
||||
|
||||
ZLib.Close (Filter);
|
||||
|
||||
Close (File_In);
|
||||
Close (File_Out);
|
||||
|
||||
Compare_Files (In_File_Name, Out_File_Name);
|
||||
|
||||
-- Test stream interface.
|
||||
|
||||
-- Compress to the back stream.
|
||||
|
||||
Open (File_In, In_File, In_File_Name);
|
||||
Create (File_Back, Out_File, Z_File_Name);
|
||||
|
||||
Stamp;
|
||||
|
||||
ZLib.Streams.Create
|
||||
(Stream => File_Z,
|
||||
Mode => ZLib.Streams.Out_Stream,
|
||||
Back => ZLib.Streams.Stream_Access
|
||||
(Stream (File_Back)),
|
||||
Back_Compressed => True,
|
||||
Level => Level,
|
||||
Strategy => Strategy,
|
||||
Header => Header);
|
||||
|
||||
Copy_Streams
|
||||
(Source => Stream (File_In).all,
|
||||
Target => File_Z);
|
||||
|
||||
-- Flushing internal buffers to the back stream.
|
||||
|
||||
ZLib.Streams.Flush (File_Z, ZLib.Finish);
|
||||
|
||||
Print_Statistic ("Write compress",
|
||||
ZLib.Streams.Write_Total_Out (File_Z));
|
||||
|
||||
ZLib.Streams.Close (File_Z);
|
||||
|
||||
Close (File_In);
|
||||
Close (File_Back);
|
||||
|
||||
-- Compare reading from original file and from
|
||||
-- decompression stream.
|
||||
|
||||
Open (File_In, In_File, In_File_Name);
|
||||
Open (File_Back, In_File, Z_File_Name);
|
||||
|
||||
ZLib.Streams.Create
|
||||
(Stream => File_Z,
|
||||
Mode => ZLib.Streams.In_Stream,
|
||||
Back => ZLib.Streams.Stream_Access
|
||||
(Stream (File_Back)),
|
||||
Back_Compressed => True,
|
||||
Header => Header);
|
||||
|
||||
Stamp;
|
||||
Compare_Streams (Stream (File_In).all, File_Z);
|
||||
|
||||
Print_Statistic ("Read decompress",
|
||||
ZLib.Streams.Read_Total_Out (File_Z));
|
||||
|
||||
ZLib.Streams.Close (File_Z);
|
||||
Close (File_In);
|
||||
Close (File_Back);
|
||||
|
||||
-- Compress by reading from compression stream.
|
||||
|
||||
Open (File_Back, In_File, In_File_Name);
|
||||
Create (File_Out, Out_File, Z_File_Name);
|
||||
|
||||
ZLib.Streams.Create
|
||||
(Stream => File_Z,
|
||||
Mode => ZLib.Streams.In_Stream,
|
||||
Back => ZLib.Streams.Stream_Access
|
||||
(Stream (File_Back)),
|
||||
Back_Compressed => False,
|
||||
Level => Level,
|
||||
Strategy => Strategy,
|
||||
Header => Header);
|
||||
|
||||
Stamp;
|
||||
Copy_Streams
|
||||
(Source => File_Z,
|
||||
Target => Stream (File_Out).all);
|
||||
|
||||
Print_Statistic ("Read compress",
|
||||
ZLib.Streams.Read_Total_Out (File_Z));
|
||||
|
||||
ZLib.Streams.Close (File_Z);
|
||||
|
||||
Close (File_Out);
|
||||
Close (File_Back);
|
||||
|
||||
-- Decompress to decompression stream.
|
||||
|
||||
Open (File_In, In_File, Z_File_Name);
|
||||
Create (File_Back, Out_File, Out_File_Name);
|
||||
|
||||
ZLib.Streams.Create
|
||||
(Stream => File_Z,
|
||||
Mode => ZLib.Streams.Out_Stream,
|
||||
Back => ZLib.Streams.Stream_Access
|
||||
(Stream (File_Back)),
|
||||
Back_Compressed => False,
|
||||
Header => Header);
|
||||
|
||||
Stamp;
|
||||
|
||||
Copy_Streams
|
||||
(Source => Stream (File_In).all,
|
||||
Target => File_Z);
|
||||
|
||||
Print_Statistic ("Write decompress",
|
||||
ZLib.Streams.Write_Total_Out (File_Z));
|
||||
|
||||
ZLib.Streams.Close (File_Z);
|
||||
Close (File_In);
|
||||
Close (File_Back);
|
||||
|
||||
Compare_Files (In_File_Name, Out_File_Name);
|
||||
end loop;
|
||||
|
||||
Ada.Text_IO.Put_Line (Count'Image (File_Size) & " Ok.");
|
||||
|
||||
exit when not Continuous;
|
||||
|
||||
File_Size := File_Size + 1;
|
||||
end loop;
|
||||
end Test;
|
||||
|
|
@ -0,0 +1,225 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: zlib-streams.adb,v 1.10 2004/05/31 10:53:40 vagul Exp $
|
||||
|
||||
with Ada.Unchecked_Deallocation;
|
||||
|
||||
package body ZLib.Streams is
|
||||
|
||||
-----------
|
||||
-- Close --
|
||||
-----------
|
||||
|
||||
procedure Close (Stream : in out Stream_Type) is
|
||||
procedure Free is new Ada.Unchecked_Deallocation
|
||||
(Stream_Element_Array, Buffer_Access);
|
||||
begin
|
||||
if Stream.Mode = Out_Stream or Stream.Mode = Duplex then
|
||||
-- We should flush the data written by the writer.
|
||||
|
||||
Flush (Stream, Finish);
|
||||
|
||||
Close (Stream.Writer);
|
||||
end if;
|
||||
|
||||
if Stream.Mode = In_Stream or Stream.Mode = Duplex then
|
||||
Close (Stream.Reader);
|
||||
Free (Stream.Buffer);
|
||||
end if;
|
||||
end Close;
|
||||
|
||||
------------
|
||||
-- Create --
|
||||
------------
|
||||
|
||||
procedure Create
|
||||
(Stream : out Stream_Type;
|
||||
Mode : in Stream_Mode;
|
||||
Back : in Stream_Access;
|
||||
Back_Compressed : in Boolean;
|
||||
Level : in Compression_Level := Default_Compression;
|
||||
Strategy : in Strategy_Type := Default_Strategy;
|
||||
Header : in Header_Type := Default;
|
||||
Read_Buffer_Size : in Ada.Streams.Stream_Element_Offset
|
||||
:= Default_Buffer_Size;
|
||||
Write_Buffer_Size : in Ada.Streams.Stream_Element_Offset
|
||||
:= Default_Buffer_Size)
|
||||
is
|
||||
|
||||
subtype Buffer_Subtype is Stream_Element_Array (1 .. Read_Buffer_Size);
|
||||
|
||||
procedure Init_Filter
|
||||
(Filter : in out Filter_Type;
|
||||
Compress : in Boolean);
|
||||
|
||||
-----------------
|
||||
-- Init_Filter --
|
||||
-----------------
|
||||
|
||||
procedure Init_Filter
|
||||
(Filter : in out Filter_Type;
|
||||
Compress : in Boolean) is
|
||||
begin
|
||||
if Compress then
|
||||
Deflate_Init
|
||||
(Filter, Level, Strategy, Header => Header);
|
||||
else
|
||||
Inflate_Init (Filter, Header => Header);
|
||||
end if;
|
||||
end Init_Filter;
|
||||
|
||||
begin
|
||||
Stream.Back := Back;
|
||||
Stream.Mode := Mode;
|
||||
|
||||
if Mode = Out_Stream or Mode = Duplex then
|
||||
Init_Filter (Stream.Writer, Back_Compressed);
|
||||
Stream.Buffer_Size := Write_Buffer_Size;
|
||||
else
|
||||
Stream.Buffer_Size := 0;
|
||||
end if;
|
||||
|
||||
if Mode = In_Stream or Mode = Duplex then
|
||||
Init_Filter (Stream.Reader, not Back_Compressed);
|
||||
|
||||
Stream.Buffer := new Buffer_Subtype;
|
||||
Stream.Rest_First := Stream.Buffer'Last + 1;
|
||||
Stream.Rest_Last := Stream.Buffer'Last;
|
||||
end if;
|
||||
end Create;
|
||||
|
||||
-----------
|
||||
-- Flush --
|
||||
-----------
|
||||
|
||||
procedure Flush
|
||||
(Stream : in out Stream_Type;
|
||||
Mode : in Flush_Mode := Sync_Flush)
|
||||
is
|
||||
Buffer : Stream_Element_Array (1 .. Stream.Buffer_Size);
|
||||
Last : Stream_Element_Offset;
|
||||
begin
|
||||
loop
|
||||
Flush (Stream.Writer, Buffer, Last, Mode);
|
||||
|
||||
Ada.Streams.Write (Stream.Back.all, Buffer (1 .. Last));
|
||||
|
||||
exit when Last < Buffer'Last;
|
||||
end loop;
|
||||
end Flush;
|
||||
|
||||
-------------
|
||||
-- Is_Open --
|
||||
-------------
|
||||
|
||||
function Is_Open (Stream : Stream_Type) return Boolean is
|
||||
begin
|
||||
return Is_Open (Stream.Reader) or else Is_Open (Stream.Writer);
|
||||
end Is_Open;
|
||||
|
||||
----------
|
||||
-- Read --
|
||||
----------
|
||||
|
||||
procedure Read
|
||||
(Stream : in out Stream_Type;
|
||||
Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset)
|
||||
is
|
||||
|
||||
procedure Read
|
||||
(Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset);
|
||||
|
||||
----------
|
||||
-- Read --
|
||||
----------
|
||||
|
||||
procedure Read
|
||||
(Item : out Stream_Element_Array;
|
||||
Last : out Stream_Element_Offset) is
|
||||
begin
|
||||
Ada.Streams.Read (Stream.Back.all, Item, Last);
|
||||
end Read;
|
||||
|
||||
procedure Read is new ZLib.Read
|
||||
(Read => Read,
|
||||
Buffer => Stream.Buffer.all,
|
||||
Rest_First => Stream.Rest_First,
|
||||
Rest_Last => Stream.Rest_Last);
|
||||
|
||||
begin
|
||||
Read (Stream.Reader, Item, Last);
|
||||
end Read;
|
||||
|
||||
-------------------
|
||||
-- Read_Total_In --
|
||||
-------------------
|
||||
|
||||
function Read_Total_In (Stream : in Stream_Type) return Count is
|
||||
begin
|
||||
return Total_In (Stream.Reader);
|
||||
end Read_Total_In;
|
||||
|
||||
--------------------
|
||||
-- Read_Total_Out --
|
||||
--------------------
|
||||
|
||||
function Read_Total_Out (Stream : in Stream_Type) return Count is
|
||||
begin
|
||||
return Total_Out (Stream.Reader);
|
||||
end Read_Total_Out;
|
||||
|
||||
-----------
|
||||
-- Write --
|
||||
-----------
|
||||
|
||||
procedure Write
|
||||
(Stream : in out Stream_Type;
|
||||
Item : in Stream_Element_Array)
|
||||
is
|
||||
|
||||
procedure Write (Item : in Stream_Element_Array);
|
||||
|
||||
-----------
|
||||
-- Write --
|
||||
-----------
|
||||
|
||||
procedure Write (Item : in Stream_Element_Array) is
|
||||
begin
|
||||
Ada.Streams.Write (Stream.Back.all, Item);
|
||||
end Write;
|
||||
|
||||
procedure Write is new ZLib.Write
|
||||
(Write => Write,
|
||||
Buffer_Size => Stream.Buffer_Size);
|
||||
|
||||
begin
|
||||
Write (Stream.Writer, Item, No_Flush);
|
||||
end Write;
|
||||
|
||||
--------------------
|
||||
-- Write_Total_In --
|
||||
--------------------
|
||||
|
||||
function Write_Total_In (Stream : in Stream_Type) return Count is
|
||||
begin
|
||||
return Total_In (Stream.Writer);
|
||||
end Write_Total_In;
|
||||
|
||||
---------------------
|
||||
-- Write_Total_Out --
|
||||
---------------------
|
||||
|
||||
function Write_Total_Out (Stream : in Stream_Type) return Count is
|
||||
begin
|
||||
return Total_Out (Stream.Writer);
|
||||
end Write_Total_Out;
|
||||
|
||||
end ZLib.Streams;
|
||||
|
|
@ -0,0 +1,114 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: zlib-streams.ads,v 1.12 2004/05/31 10:53:40 vagul Exp $
|
||||
|
||||
package ZLib.Streams is
|
||||
|
||||
type Stream_Mode is (In_Stream, Out_Stream, Duplex);
|
||||
|
||||
type Stream_Access is access all Ada.Streams.Root_Stream_Type'Class;
|
||||
|
||||
type Stream_Type is
|
||||
new Ada.Streams.Root_Stream_Type with private;
|
||||
|
||||
procedure Read
|
||||
(Stream : in out Stream_Type;
|
||||
Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset);
|
||||
|
||||
procedure Write
|
||||
(Stream : in out Stream_Type;
|
||||
Item : in Ada.Streams.Stream_Element_Array);
|
||||
|
||||
procedure Flush
|
||||
(Stream : in out Stream_Type;
|
||||
Mode : in Flush_Mode := Sync_Flush);
|
||||
-- Flush the written data to the back stream,
|
||||
-- all data placed to the compressor is flushing to the Back stream.
|
||||
-- Should not be used untill necessary, becouse it is decreasing
|
||||
-- compression.
|
||||
|
||||
function Read_Total_In (Stream : in Stream_Type) return Count;
|
||||
pragma Inline (Read_Total_In);
|
||||
-- Return total number of bytes read from back stream so far.
|
||||
|
||||
function Read_Total_Out (Stream : in Stream_Type) return Count;
|
||||
pragma Inline (Read_Total_Out);
|
||||
-- Return total number of bytes read so far.
|
||||
|
||||
function Write_Total_In (Stream : in Stream_Type) return Count;
|
||||
pragma Inline (Write_Total_In);
|
||||
-- Return total number of bytes written so far.
|
||||
|
||||
function Write_Total_Out (Stream : in Stream_Type) return Count;
|
||||
pragma Inline (Write_Total_Out);
|
||||
-- Return total number of bytes written to the back stream.
|
||||
|
||||
procedure Create
|
||||
(Stream : out Stream_Type;
|
||||
Mode : in Stream_Mode;
|
||||
Back : in Stream_Access;
|
||||
Back_Compressed : in Boolean;
|
||||
Level : in Compression_Level := Default_Compression;
|
||||
Strategy : in Strategy_Type := Default_Strategy;
|
||||
Header : in Header_Type := Default;
|
||||
Read_Buffer_Size : in Ada.Streams.Stream_Element_Offset
|
||||
:= Default_Buffer_Size;
|
||||
Write_Buffer_Size : in Ada.Streams.Stream_Element_Offset
|
||||
:= Default_Buffer_Size);
|
||||
-- Create the Comression/Decompression stream.
|
||||
-- If mode is In_Stream then Write operation is disabled.
|
||||
-- If mode is Out_Stream then Read operation is disabled.
|
||||
|
||||
-- If Back_Compressed is true then
|
||||
-- Data written to the Stream is compressing to the Back stream
|
||||
-- and data read from the Stream is decompressed data from the Back stream.
|
||||
|
||||
-- If Back_Compressed is false then
|
||||
-- Data written to the Stream is decompressing to the Back stream
|
||||
-- and data read from the Stream is compressed data from the Back stream.
|
||||
|
||||
-- !!! When the Need_Header is False ZLib-Ada is using undocumented
|
||||
-- ZLib 1.1.4 functionality to do not create/wait for ZLib headers.
|
||||
|
||||
function Is_Open (Stream : Stream_Type) return Boolean;
|
||||
|
||||
procedure Close (Stream : in out Stream_Type);
|
||||
|
||||
private
|
||||
|
||||
use Ada.Streams;
|
||||
|
||||
type Buffer_Access is access all Stream_Element_Array;
|
||||
|
||||
type Stream_Type
|
||||
is new Root_Stream_Type with
|
||||
record
|
||||
Mode : Stream_Mode;
|
||||
|
||||
Buffer : Buffer_Access;
|
||||
Rest_First : Stream_Element_Offset;
|
||||
Rest_Last : Stream_Element_Offset;
|
||||
-- Buffer for Read operation.
|
||||
-- We need to have this buffer in the record
|
||||
-- becouse not all read data from back stream
|
||||
-- could be processed during the read operation.
|
||||
|
||||
Buffer_Size : Stream_Element_Offset;
|
||||
-- Buffer size for write operation.
|
||||
-- We do not need to have this buffer
|
||||
-- in the record becouse all data could be
|
||||
-- processed in the write operation.
|
||||
|
||||
Back : Stream_Access;
|
||||
Reader : Filter_Type;
|
||||
Writer : Filter_Type;
|
||||
end record;
|
||||
|
||||
end ZLib.Streams;
|
||||
|
|
@ -0,0 +1,141 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: zlib-thin.adb,v 1.8 2003/12/14 18:27:31 vagul Exp $
|
||||
|
||||
package body ZLib.Thin is
|
||||
|
||||
ZLIB_VERSION : constant Chars_Ptr := zlibVersion;
|
||||
|
||||
Z_Stream_Size : constant Int := Z_Stream'Size / System.Storage_Unit;
|
||||
|
||||
--------------
|
||||
-- Avail_In --
|
||||
--------------
|
||||
|
||||
function Avail_In (Strm : in Z_Stream) return UInt is
|
||||
begin
|
||||
return Strm.Avail_In;
|
||||
end Avail_In;
|
||||
|
||||
---------------
|
||||
-- Avail_Out --
|
||||
---------------
|
||||
|
||||
function Avail_Out (Strm : in Z_Stream) return UInt is
|
||||
begin
|
||||
return Strm.Avail_Out;
|
||||
end Avail_Out;
|
||||
|
||||
------------------
|
||||
-- Deflate_Init --
|
||||
------------------
|
||||
|
||||
function Deflate_Init
|
||||
(strm : Z_Streamp;
|
||||
level : Int;
|
||||
method : Int;
|
||||
windowBits : Int;
|
||||
memLevel : Int;
|
||||
strategy : Int)
|
||||
return Int is
|
||||
begin
|
||||
return deflateInit2
|
||||
(strm,
|
||||
level,
|
||||
method,
|
||||
windowBits,
|
||||
memLevel,
|
||||
strategy,
|
||||
ZLIB_VERSION,
|
||||
Z_Stream_Size);
|
||||
end Deflate_Init;
|
||||
|
||||
------------------
|
||||
-- Inflate_Init --
|
||||
------------------
|
||||
|
||||
function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int is
|
||||
begin
|
||||
return inflateInit2 (strm, windowBits, ZLIB_VERSION, Z_Stream_Size);
|
||||
end Inflate_Init;
|
||||
|
||||
------------------------
|
||||
-- Last_Error_Message --
|
||||
------------------------
|
||||
|
||||
function Last_Error_Message (Strm : in Z_Stream) return String is
|
||||
use Interfaces.C.Strings;
|
||||
begin
|
||||
if Strm.msg = Null_Ptr then
|
||||
return "";
|
||||
else
|
||||
return Value (Strm.msg);
|
||||
end if;
|
||||
end Last_Error_Message;
|
||||
|
||||
------------
|
||||
-- Set_In --
|
||||
------------
|
||||
|
||||
procedure Set_In
|
||||
(Strm : in out Z_Stream;
|
||||
Buffer : in Voidp;
|
||||
Size : in UInt) is
|
||||
begin
|
||||
Strm.Next_In := Buffer;
|
||||
Strm.Avail_In := Size;
|
||||
end Set_In;
|
||||
|
||||
------------------
|
||||
-- Set_Mem_Func --
|
||||
------------------
|
||||
|
||||
procedure Set_Mem_Func
|
||||
(Strm : in out Z_Stream;
|
||||
Opaque : in Voidp;
|
||||
Alloc : in alloc_func;
|
||||
Free : in free_func) is
|
||||
begin
|
||||
Strm.opaque := Opaque;
|
||||
Strm.zalloc := Alloc;
|
||||
Strm.zfree := Free;
|
||||
end Set_Mem_Func;
|
||||
|
||||
-------------
|
||||
-- Set_Out --
|
||||
-------------
|
||||
|
||||
procedure Set_Out
|
||||
(Strm : in out Z_Stream;
|
||||
Buffer : in Voidp;
|
||||
Size : in UInt) is
|
||||
begin
|
||||
Strm.Next_Out := Buffer;
|
||||
Strm.Avail_Out := Size;
|
||||
end Set_Out;
|
||||
|
||||
--------------
|
||||
-- Total_In --
|
||||
--------------
|
||||
|
||||
function Total_In (Strm : in Z_Stream) return ULong is
|
||||
begin
|
||||
return Strm.Total_In;
|
||||
end Total_In;
|
||||
|
||||
---------------
|
||||
-- Total_Out --
|
||||
---------------
|
||||
|
||||
function Total_Out (Strm : in Z_Stream) return ULong is
|
||||
begin
|
||||
return Strm.Total_Out;
|
||||
end Total_Out;
|
||||
|
||||
end ZLib.Thin;
|
||||
|
|
@ -0,0 +1,450 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: zlib-thin.ads,v 1.11 2004/07/23 06:33:11 vagul Exp $
|
||||
|
||||
with Interfaces.C.Strings;
|
||||
|
||||
with System;
|
||||
|
||||
private package ZLib.Thin is
|
||||
|
||||
-- From zconf.h
|
||||
|
||||
MAX_MEM_LEVEL : constant := 9; -- zconf.h:105
|
||||
-- zconf.h:105
|
||||
MAX_WBITS : constant := 15; -- zconf.h:115
|
||||
-- 32K LZ77 window
|
||||
-- zconf.h:115
|
||||
SEEK_SET : constant := 8#0000#; -- zconf.h:244
|
||||
-- Seek from beginning of file.
|
||||
-- zconf.h:244
|
||||
SEEK_CUR : constant := 1; -- zconf.h:245
|
||||
-- Seek from current position.
|
||||
-- zconf.h:245
|
||||
SEEK_END : constant := 2; -- zconf.h:246
|
||||
-- Set file pointer to EOF plus "offset"
|
||||
-- zconf.h:246
|
||||
|
||||
type Byte is new Interfaces.C.unsigned_char; -- 8 bits
|
||||
-- zconf.h:214
|
||||
type UInt is new Interfaces.C.unsigned; -- 16 bits or more
|
||||
-- zconf.h:216
|
||||
type Int is new Interfaces.C.int;
|
||||
|
||||
type ULong is new Interfaces.C.unsigned_long; -- 32 bits or more
|
||||
-- zconf.h:217
|
||||
subtype Chars_Ptr is Interfaces.C.Strings.chars_ptr;
|
||||
|
||||
type ULong_Access is access ULong;
|
||||
type Int_Access is access Int;
|
||||
|
||||
subtype Voidp is System.Address; -- zconf.h:232
|
||||
|
||||
subtype Byte_Access is Voidp;
|
||||
|
||||
Nul : constant Voidp := System.Null_Address;
|
||||
-- end from zconf
|
||||
|
||||
Z_NO_FLUSH : constant := 8#0000#; -- zlib.h:125
|
||||
-- zlib.h:125
|
||||
Z_PARTIAL_FLUSH : constant := 1; -- zlib.h:126
|
||||
-- will be removed, use
|
||||
-- Z_SYNC_FLUSH instead
|
||||
-- zlib.h:126
|
||||
Z_SYNC_FLUSH : constant := 2; -- zlib.h:127
|
||||
-- zlib.h:127
|
||||
Z_FULL_FLUSH : constant := 3; -- zlib.h:128
|
||||
-- zlib.h:128
|
||||
Z_FINISH : constant := 4; -- zlib.h:129
|
||||
-- zlib.h:129
|
||||
Z_OK : constant := 8#0000#; -- zlib.h:132
|
||||
-- zlib.h:132
|
||||
Z_STREAM_END : constant := 1; -- zlib.h:133
|
||||
-- zlib.h:133
|
||||
Z_NEED_DICT : constant := 2; -- zlib.h:134
|
||||
-- zlib.h:134
|
||||
Z_ERRNO : constant := -1; -- zlib.h:135
|
||||
-- zlib.h:135
|
||||
Z_STREAM_ERROR : constant := -2; -- zlib.h:136
|
||||
-- zlib.h:136
|
||||
Z_DATA_ERROR : constant := -3; -- zlib.h:137
|
||||
-- zlib.h:137
|
||||
Z_MEM_ERROR : constant := -4; -- zlib.h:138
|
||||
-- zlib.h:138
|
||||
Z_BUF_ERROR : constant := -5; -- zlib.h:139
|
||||
-- zlib.h:139
|
||||
Z_VERSION_ERROR : constant := -6; -- zlib.h:140
|
||||
-- zlib.h:140
|
||||
Z_NO_COMPRESSION : constant := 8#0000#; -- zlib.h:145
|
||||
-- zlib.h:145
|
||||
Z_BEST_SPEED : constant := 1; -- zlib.h:146
|
||||
-- zlib.h:146
|
||||
Z_BEST_COMPRESSION : constant := 9; -- zlib.h:147
|
||||
-- zlib.h:147
|
||||
Z_DEFAULT_COMPRESSION : constant := -1; -- zlib.h:148
|
||||
-- zlib.h:148
|
||||
Z_FILTERED : constant := 1; -- zlib.h:151
|
||||
-- zlib.h:151
|
||||
Z_HUFFMAN_ONLY : constant := 2; -- zlib.h:152
|
||||
-- zlib.h:152
|
||||
Z_DEFAULT_STRATEGY : constant := 8#0000#; -- zlib.h:153
|
||||
-- zlib.h:153
|
||||
Z_BINARY : constant := 8#0000#; -- zlib.h:156
|
||||
-- zlib.h:156
|
||||
Z_ASCII : constant := 1; -- zlib.h:157
|
||||
-- zlib.h:157
|
||||
Z_UNKNOWN : constant := 2; -- zlib.h:158
|
||||
-- zlib.h:158
|
||||
Z_DEFLATED : constant := 8; -- zlib.h:161
|
||||
-- zlib.h:161
|
||||
Z_NULL : constant := 8#0000#; -- zlib.h:164
|
||||
-- for initializing zalloc, zfree, opaque
|
||||
-- zlib.h:164
|
||||
type gzFile is new Voidp; -- zlib.h:646
|
||||
|
||||
type Z_Stream is private;
|
||||
|
||||
type Z_Streamp is access all Z_Stream; -- zlib.h:89
|
||||
|
||||
type alloc_func is access function
|
||||
(Opaque : Voidp;
|
||||
Items : UInt;
|
||||
Size : UInt)
|
||||
return Voidp; -- zlib.h:63
|
||||
|
||||
type free_func is access procedure (opaque : Voidp; address : Voidp);
|
||||
|
||||
function zlibVersion return Chars_Ptr;
|
||||
|
||||
function Deflate (strm : Z_Streamp; flush : Int) return Int;
|
||||
|
||||
function DeflateEnd (strm : Z_Streamp) return Int;
|
||||
|
||||
function Inflate (strm : Z_Streamp; flush : Int) return Int;
|
||||
|
||||
function InflateEnd (strm : Z_Streamp) return Int;
|
||||
|
||||
function deflateSetDictionary
|
||||
(strm : Z_Streamp;
|
||||
dictionary : Byte_Access;
|
||||
dictLength : UInt)
|
||||
return Int;
|
||||
|
||||
function deflateCopy (dest : Z_Streamp; source : Z_Streamp) return Int;
|
||||
-- zlib.h:478
|
||||
|
||||
function deflateReset (strm : Z_Streamp) return Int; -- zlib.h:495
|
||||
|
||||
function deflateParams
|
||||
(strm : Z_Streamp;
|
||||
level : Int;
|
||||
strategy : Int)
|
||||
return Int; -- zlib.h:506
|
||||
|
||||
function inflateSetDictionary
|
||||
(strm : Z_Streamp;
|
||||
dictionary : Byte_Access;
|
||||
dictLength : UInt)
|
||||
return Int; -- zlib.h:548
|
||||
|
||||
function inflateSync (strm : Z_Streamp) return Int; -- zlib.h:565
|
||||
|
||||
function inflateReset (strm : Z_Streamp) return Int; -- zlib.h:580
|
||||
|
||||
function compress
|
||||
(dest : Byte_Access;
|
||||
destLen : ULong_Access;
|
||||
source : Byte_Access;
|
||||
sourceLen : ULong)
|
||||
return Int; -- zlib.h:601
|
||||
|
||||
function compress2
|
||||
(dest : Byte_Access;
|
||||
destLen : ULong_Access;
|
||||
source : Byte_Access;
|
||||
sourceLen : ULong;
|
||||
level : Int)
|
||||
return Int; -- zlib.h:615
|
||||
|
||||
function uncompress
|
||||
(dest : Byte_Access;
|
||||
destLen : ULong_Access;
|
||||
source : Byte_Access;
|
||||
sourceLen : ULong)
|
||||
return Int;
|
||||
|
||||
function gzopen (path : Chars_Ptr; mode : Chars_Ptr) return gzFile;
|
||||
|
||||
function gzdopen (fd : Int; mode : Chars_Ptr) return gzFile;
|
||||
|
||||
function gzsetparams
|
||||
(file : gzFile;
|
||||
level : Int;
|
||||
strategy : Int)
|
||||
return Int;
|
||||
|
||||
function gzread
|
||||
(file : gzFile;
|
||||
buf : Voidp;
|
||||
len : UInt)
|
||||
return Int;
|
||||
|
||||
function gzwrite
|
||||
(file : in gzFile;
|
||||
buf : in Voidp;
|
||||
len : in UInt)
|
||||
return Int;
|
||||
|
||||
function gzprintf (file : in gzFile; format : in Chars_Ptr) return Int;
|
||||
|
||||
function gzputs (file : in gzFile; s : in Chars_Ptr) return Int;
|
||||
|
||||
function gzgets
|
||||
(file : gzFile;
|
||||
buf : Chars_Ptr;
|
||||
len : Int)
|
||||
return Chars_Ptr;
|
||||
|
||||
function gzputc (file : gzFile; char : Int) return Int;
|
||||
|
||||
function gzgetc (file : gzFile) return Int;
|
||||
|
||||
function gzflush (file : gzFile; flush : Int) return Int;
|
||||
|
||||
function gzseek
|
||||
(file : gzFile;
|
||||
offset : Int;
|
||||
whence : Int)
|
||||
return Int;
|
||||
|
||||
function gzrewind (file : gzFile) return Int;
|
||||
|
||||
function gztell (file : gzFile) return Int;
|
||||
|
||||
function gzeof (file : gzFile) return Int;
|
||||
|
||||
function gzclose (file : gzFile) return Int;
|
||||
|
||||
function gzerror (file : gzFile; errnum : Int_Access) return Chars_Ptr;
|
||||
|
||||
function adler32
|
||||
(adler : ULong;
|
||||
buf : Byte_Access;
|
||||
len : UInt)
|
||||
return ULong;
|
||||
|
||||
function crc32
|
||||
(crc : ULong;
|
||||
buf : Byte_Access;
|
||||
len : UInt)
|
||||
return ULong;
|
||||
|
||||
function deflateInit
|
||||
(strm : Z_Streamp;
|
||||
level : Int;
|
||||
version : Chars_Ptr;
|
||||
stream_size : Int)
|
||||
return Int;
|
||||
|
||||
function deflateInit2
|
||||
(strm : Z_Streamp;
|
||||
level : Int;
|
||||
method : Int;
|
||||
windowBits : Int;
|
||||
memLevel : Int;
|
||||
strategy : Int;
|
||||
version : Chars_Ptr;
|
||||
stream_size : Int)
|
||||
return Int;
|
||||
|
||||
function Deflate_Init
|
||||
(strm : Z_Streamp;
|
||||
level : Int;
|
||||
method : Int;
|
||||
windowBits : Int;
|
||||
memLevel : Int;
|
||||
strategy : Int)
|
||||
return Int;
|
||||
pragma Inline (Deflate_Init);
|
||||
|
||||
function inflateInit
|
||||
(strm : Z_Streamp;
|
||||
version : Chars_Ptr;
|
||||
stream_size : Int)
|
||||
return Int;
|
||||
|
||||
function inflateInit2
|
||||
(strm : in Z_Streamp;
|
||||
windowBits : in Int;
|
||||
version : in Chars_Ptr;
|
||||
stream_size : in Int)
|
||||
return Int;
|
||||
|
||||
function inflateBackInit
|
||||
(strm : in Z_Streamp;
|
||||
windowBits : in Int;
|
||||
window : in Byte_Access;
|
||||
version : in Chars_Ptr;
|
||||
stream_size : in Int)
|
||||
return Int;
|
||||
-- Size of window have to be 2**windowBits.
|
||||
|
||||
function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int;
|
||||
pragma Inline (Inflate_Init);
|
||||
|
||||
function zError (err : Int) return Chars_Ptr;
|
||||
|
||||
function inflateSyncPoint (z : Z_Streamp) return Int;
|
||||
|
||||
function get_crc_table return ULong_Access;
|
||||
|
||||
-- Interface to the available fields of the z_stream structure.
|
||||
-- The application must update next_in and avail_in when avail_in has
|
||||
-- dropped to zero. It must update next_out and avail_out when avail_out
|
||||
-- has dropped to zero. The application must initialize zalloc, zfree and
|
||||
-- opaque before calling the init function.
|
||||
|
||||
procedure Set_In
|
||||
(Strm : in out Z_Stream;
|
||||
Buffer : in Voidp;
|
||||
Size : in UInt);
|
||||
pragma Inline (Set_In);
|
||||
|
||||
procedure Set_Out
|
||||
(Strm : in out Z_Stream;
|
||||
Buffer : in Voidp;
|
||||
Size : in UInt);
|
||||
pragma Inline (Set_Out);
|
||||
|
||||
procedure Set_Mem_Func
|
||||
(Strm : in out Z_Stream;
|
||||
Opaque : in Voidp;
|
||||
Alloc : in alloc_func;
|
||||
Free : in free_func);
|
||||
pragma Inline (Set_Mem_Func);
|
||||
|
||||
function Last_Error_Message (Strm : in Z_Stream) return String;
|
||||
pragma Inline (Last_Error_Message);
|
||||
|
||||
function Avail_Out (Strm : in Z_Stream) return UInt;
|
||||
pragma Inline (Avail_Out);
|
||||
|
||||
function Avail_In (Strm : in Z_Stream) return UInt;
|
||||
pragma Inline (Avail_In);
|
||||
|
||||
function Total_In (Strm : in Z_Stream) return ULong;
|
||||
pragma Inline (Total_In);
|
||||
|
||||
function Total_Out (Strm : in Z_Stream) return ULong;
|
||||
pragma Inline (Total_Out);
|
||||
|
||||
function inflateCopy
|
||||
(dest : in Z_Streamp;
|
||||
Source : in Z_Streamp)
|
||||
return Int;
|
||||
|
||||
function compressBound (Source_Len : in ULong) return ULong;
|
||||
|
||||
function deflateBound
|
||||
(Strm : in Z_Streamp;
|
||||
Source_Len : in ULong)
|
||||
return ULong;
|
||||
|
||||
function gzungetc (C : in Int; File : in gzFile) return Int;
|
||||
|
||||
function zlibCompileFlags return ULong;
|
||||
|
||||
private
|
||||
|
||||
type Z_Stream is record -- zlib.h:68
|
||||
Next_In : Voidp := Nul; -- next input byte
|
||||
Avail_In : UInt := 0; -- number of bytes available at next_in
|
||||
Total_In : ULong := 0; -- total nb of input bytes read so far
|
||||
Next_Out : Voidp := Nul; -- next output byte should be put there
|
||||
Avail_Out : UInt := 0; -- remaining free space at next_out
|
||||
Total_Out : ULong := 0; -- total nb of bytes output so far
|
||||
msg : Chars_Ptr; -- last error message, NULL if no error
|
||||
state : Voidp; -- not visible by applications
|
||||
zalloc : alloc_func := null; -- used to allocate the internal state
|
||||
zfree : free_func := null; -- used to free the internal state
|
||||
opaque : Voidp; -- private data object passed to
|
||||
-- zalloc and zfree
|
||||
data_type : Int; -- best guess about the data type:
|
||||
-- ascii or binary
|
||||
adler : ULong; -- adler32 value of the uncompressed
|
||||
-- data
|
||||
reserved : ULong; -- reserved for future use
|
||||
end record;
|
||||
|
||||
pragma Convention (C, Z_Stream);
|
||||
|
||||
pragma Import (C, zlibVersion, "zlibVersion");
|
||||
pragma Import (C, Deflate, "deflate");
|
||||
pragma Import (C, DeflateEnd, "deflateEnd");
|
||||
pragma Import (C, Inflate, "inflate");
|
||||
pragma Import (C, InflateEnd, "inflateEnd");
|
||||
pragma Import (C, deflateSetDictionary, "deflateSetDictionary");
|
||||
pragma Import (C, deflateCopy, "deflateCopy");
|
||||
pragma Import (C, deflateReset, "deflateReset");
|
||||
pragma Import (C, deflateParams, "deflateParams");
|
||||
pragma Import (C, inflateSetDictionary, "inflateSetDictionary");
|
||||
pragma Import (C, inflateSync, "inflateSync");
|
||||
pragma Import (C, inflateReset, "inflateReset");
|
||||
pragma Import (C, compress, "compress");
|
||||
pragma Import (C, compress2, "compress2");
|
||||
pragma Import (C, uncompress, "uncompress");
|
||||
pragma Import (C, gzopen, "gzopen");
|
||||
pragma Import (C, gzdopen, "gzdopen");
|
||||
pragma Import (C, gzsetparams, "gzsetparams");
|
||||
pragma Import (C, gzread, "gzread");
|
||||
pragma Import (C, gzwrite, "gzwrite");
|
||||
pragma Import (C, gzprintf, "gzprintf");
|
||||
pragma Import (C, gzputs, "gzputs");
|
||||
pragma Import (C, gzgets, "gzgets");
|
||||
pragma Import (C, gzputc, "gzputc");
|
||||
pragma Import (C, gzgetc, "gzgetc");
|
||||
pragma Import (C, gzflush, "gzflush");
|
||||
pragma Import (C, gzseek, "gzseek");
|
||||
pragma Import (C, gzrewind, "gzrewind");
|
||||
pragma Import (C, gztell, "gztell");
|
||||
pragma Import (C, gzeof, "gzeof");
|
||||
pragma Import (C, gzclose, "gzclose");
|
||||
pragma Import (C, gzerror, "gzerror");
|
||||
pragma Import (C, adler32, "adler32");
|
||||
pragma Import (C, crc32, "crc32");
|
||||
pragma Import (C, deflateInit, "deflateInit_");
|
||||
pragma Import (C, inflateInit, "inflateInit_");
|
||||
pragma Import (C, deflateInit2, "deflateInit2_");
|
||||
pragma Import (C, inflateInit2, "inflateInit2_");
|
||||
pragma Import (C, zError, "zError");
|
||||
pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
|
||||
pragma Import (C, get_crc_table, "get_crc_table");
|
||||
|
||||
-- since zlib 1.2.0:
|
||||
|
||||
pragma Import (C, inflateCopy, "inflateCopy");
|
||||
pragma Import (C, compressBound, "compressBound");
|
||||
pragma Import (C, deflateBound, "deflateBound");
|
||||
pragma Import (C, gzungetc, "gzungetc");
|
||||
pragma Import (C, zlibCompileFlags, "zlibCompileFlags");
|
||||
|
||||
pragma Import (C, inflateBackInit, "inflateBackInit_");
|
||||
|
||||
-- I stopped binding the inflateBack routines, becouse realize that
|
||||
-- it does not support zlib and gzip headers for now, and have no
|
||||
-- symmetric deflateBack routines.
|
||||
-- ZLib-Ada is symmetric regarding deflate/inflate data transformation
|
||||
-- and has a similar generic callback interface for the
|
||||
-- deflate/inflate transformation based on the regular Deflate/Inflate
|
||||
-- routines.
|
||||
|
||||
-- pragma Import (C, inflateBack, "inflateBack");
|
||||
-- pragma Import (C, inflateBackEnd, "inflateBackEnd");
|
||||
|
||||
end ZLib.Thin;
|
||||
|
|
@ -0,0 +1,701 @@
|
|||
----------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2004 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- Open source license information is in the zlib.ads file. --
|
||||
----------------------------------------------------------------
|
||||
|
||||
-- $Id: zlib.adb,v 1.31 2004/09/06 06:53:19 vagul Exp $
|
||||
|
||||
with Ada.Exceptions;
|
||||
with Ada.Unchecked_Conversion;
|
||||
with Ada.Unchecked_Deallocation;
|
||||
|
||||
with Interfaces.C.Strings;
|
||||
|
||||
with ZLib.Thin;
|
||||
|
||||
package body ZLib is
|
||||
|
||||
use type Thin.Int;
|
||||
|
||||
type Z_Stream is new Thin.Z_Stream;
|
||||
|
||||
type Return_Code_Enum is
|
||||
(OK,
|
||||
STREAM_END,
|
||||
NEED_DICT,
|
||||
ERRNO,
|
||||
STREAM_ERROR,
|
||||
DATA_ERROR,
|
||||
MEM_ERROR,
|
||||
BUF_ERROR,
|
||||
VERSION_ERROR);
|
||||
|
||||
type Flate_Step_Function is access
|
||||
function (Strm : in Thin.Z_Streamp; Flush : in Thin.Int) return Thin.Int;
|
||||
pragma Convention (C, Flate_Step_Function);
|
||||
|
||||
type Flate_End_Function is access
|
||||
function (Ctrm : in Thin.Z_Streamp) return Thin.Int;
|
||||
pragma Convention (C, Flate_End_Function);
|
||||
|
||||
type Flate_Type is record
|
||||
Step : Flate_Step_Function;
|
||||
Done : Flate_End_Function;
|
||||
end record;
|
||||
|
||||
subtype Footer_Array is Stream_Element_Array (1 .. 8);
|
||||
|
||||
Simple_GZip_Header : constant Stream_Element_Array (1 .. 10)
|
||||
:= (16#1f#, 16#8b#, -- Magic header
|
||||
16#08#, -- Z_DEFLATED
|
||||
16#00#, -- Flags
|
||||
16#00#, 16#00#, 16#00#, 16#00#, -- Time
|
||||
16#00#, -- XFlags
|
||||
16#03# -- OS code
|
||||
);
|
||||
-- The simplest gzip header is not for informational, but just for
|
||||
-- gzip format compatibility.
|
||||
-- Note that some code below is using assumption
|
||||
-- Simple_GZip_Header'Last > Footer_Array'Last, so do not make
|
||||
-- Simple_GZip_Header'Last <= Footer_Array'Last.
|
||||
|
||||
Return_Code : constant array (Thin.Int range <>) of Return_Code_Enum
|
||||
:= (0 => OK,
|
||||
1 => STREAM_END,
|
||||
2 => NEED_DICT,
|
||||
-1 => ERRNO,
|
||||
-2 => STREAM_ERROR,
|
||||
-3 => DATA_ERROR,
|
||||
-4 => MEM_ERROR,
|
||||
-5 => BUF_ERROR,
|
||||
-6 => VERSION_ERROR);
|
||||
|
||||
Flate : constant array (Boolean) of Flate_Type
|
||||
:= (True => (Step => Thin.Deflate'Access,
|
||||
Done => Thin.DeflateEnd'Access),
|
||||
False => (Step => Thin.Inflate'Access,
|
||||
Done => Thin.InflateEnd'Access));
|
||||
|
||||
Flush_Finish : constant array (Boolean) of Flush_Mode
|
||||
:= (True => Finish, False => No_Flush);
|
||||
|
||||
procedure Raise_Error (Stream : in Z_Stream);
|
||||
pragma Inline (Raise_Error);
|
||||
|
||||
procedure Raise_Error (Message : in String);
|
||||
pragma Inline (Raise_Error);
|
||||
|
||||
procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int);
|
||||
|
||||
procedure Free is new Ada.Unchecked_Deallocation
|
||||
(Z_Stream, Z_Stream_Access);
|
||||
|
||||
function To_Thin_Access is new Ada.Unchecked_Conversion
|
||||
(Z_Stream_Access, Thin.Z_Streamp);
|
||||
|
||||
procedure Translate_GZip
|
||||
(Filter : in out Filter_Type;
|
||||
In_Data : in Ada.Streams.Stream_Element_Array;
|
||||
In_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode);
|
||||
-- Separate translate routine for make gzip header.
|
||||
|
||||
procedure Translate_Auto
|
||||
(Filter : in out Filter_Type;
|
||||
In_Data : in Ada.Streams.Stream_Element_Array;
|
||||
In_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode);
|
||||
-- translate routine without additional headers.
|
||||
|
||||
-----------------
|
||||
-- Check_Error --
|
||||
-----------------
|
||||
|
||||
procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int) is
|
||||
use type Thin.Int;
|
||||
begin
|
||||
if Code /= Thin.Z_OK then
|
||||
Raise_Error
|
||||
(Return_Code_Enum'Image (Return_Code (Code))
|
||||
& ": " & Last_Error_Message (Stream));
|
||||
end if;
|
||||
end Check_Error;
|
||||
|
||||
-----------
|
||||
-- Close --
|
||||
-----------
|
||||
|
||||
procedure Close
|
||||
(Filter : in out Filter_Type;
|
||||
Ignore_Error : in Boolean := False)
|
||||
is
|
||||
Code : Thin.Int;
|
||||
begin
|
||||
if not Ignore_Error and then not Is_Open (Filter) then
|
||||
raise Status_Error;
|
||||
end if;
|
||||
|
||||
Code := Flate (Filter.Compression).Done (To_Thin_Access (Filter.Strm));
|
||||
|
||||
if Ignore_Error or else Code = Thin.Z_OK then
|
||||
Free (Filter.Strm);
|
||||
else
|
||||
declare
|
||||
Error_Message : constant String
|
||||
:= Last_Error_Message (Filter.Strm.all);
|
||||
begin
|
||||
Free (Filter.Strm);
|
||||
Ada.Exceptions.Raise_Exception
|
||||
(ZLib_Error'Identity,
|
||||
Return_Code_Enum'Image (Return_Code (Code))
|
||||
& ": " & Error_Message);
|
||||
end;
|
||||
end if;
|
||||
end Close;
|
||||
|
||||
-----------
|
||||
-- CRC32 --
|
||||
-----------
|
||||
|
||||
function CRC32
|
||||
(CRC : in Unsigned_32;
|
||||
Data : in Ada.Streams.Stream_Element_Array)
|
||||
return Unsigned_32
|
||||
is
|
||||
use Thin;
|
||||
begin
|
||||
return Unsigned_32 (crc32 (ULong (CRC),
|
||||
Data'Address,
|
||||
Data'Length));
|
||||
end CRC32;
|
||||
|
||||
procedure CRC32
|
||||
(CRC : in out Unsigned_32;
|
||||
Data : in Ada.Streams.Stream_Element_Array) is
|
||||
begin
|
||||
CRC := CRC32 (CRC, Data);
|
||||
end CRC32;
|
||||
|
||||
------------------
|
||||
-- Deflate_Init --
|
||||
------------------
|
||||
|
||||
procedure Deflate_Init
|
||||
(Filter : in out Filter_Type;
|
||||
Level : in Compression_Level := Default_Compression;
|
||||
Strategy : in Strategy_Type := Default_Strategy;
|
||||
Method : in Compression_Method := Deflated;
|
||||
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
|
||||
Memory_Level : in Memory_Level_Type := Default_Memory_Level;
|
||||
Header : in Header_Type := Default)
|
||||
is
|
||||
use type Thin.Int;
|
||||
Win_Bits : Thin.Int := Thin.Int (Window_Bits);
|
||||
begin
|
||||
if Is_Open (Filter) then
|
||||
raise Status_Error;
|
||||
end if;
|
||||
|
||||
-- We allow ZLib to make header only in case of default header type.
|
||||
-- Otherwise we would either do header by ourselfs, or do not do
|
||||
-- header at all.
|
||||
|
||||
if Header = None or else Header = GZip then
|
||||
Win_Bits := -Win_Bits;
|
||||
end if;
|
||||
|
||||
-- For the GZip CRC calculation and make headers.
|
||||
|
||||
if Header = GZip then
|
||||
Filter.CRC := 0;
|
||||
Filter.Offset := Simple_GZip_Header'First;
|
||||
else
|
||||
Filter.Offset := Simple_GZip_Header'Last + 1;
|
||||
end if;
|
||||
|
||||
Filter.Strm := new Z_Stream;
|
||||
Filter.Compression := True;
|
||||
Filter.Stream_End := False;
|
||||
Filter.Header := Header;
|
||||
|
||||
if Thin.Deflate_Init
|
||||
(To_Thin_Access (Filter.Strm),
|
||||
Level => Thin.Int (Level),
|
||||
method => Thin.Int (Method),
|
||||
windowBits => Win_Bits,
|
||||
memLevel => Thin.Int (Memory_Level),
|
||||
strategy => Thin.Int (Strategy)) /= Thin.Z_OK
|
||||
then
|
||||
Raise_Error (Filter.Strm.all);
|
||||
end if;
|
||||
end Deflate_Init;
|
||||
|
||||
-----------
|
||||
-- Flush --
|
||||
-----------
|
||||
|
||||
procedure Flush
|
||||
(Filter : in out Filter_Type;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode)
|
||||
is
|
||||
No_Data : Stream_Element_Array := (1 .. 0 => 0);
|
||||
Last : Stream_Element_Offset;
|
||||
begin
|
||||
Translate (Filter, No_Data, Last, Out_Data, Out_Last, Flush);
|
||||
end Flush;
|
||||
|
||||
-----------------------
|
||||
-- Generic_Translate --
|
||||
-----------------------
|
||||
|
||||
procedure Generic_Translate
|
||||
(Filter : in out ZLib.Filter_Type;
|
||||
In_Buffer_Size : in Integer := Default_Buffer_Size;
|
||||
Out_Buffer_Size : in Integer := Default_Buffer_Size)
|
||||
is
|
||||
In_Buffer : Stream_Element_Array
|
||||
(1 .. Stream_Element_Offset (In_Buffer_Size));
|
||||
Out_Buffer : Stream_Element_Array
|
||||
(1 .. Stream_Element_Offset (Out_Buffer_Size));
|
||||
Last : Stream_Element_Offset;
|
||||
In_Last : Stream_Element_Offset;
|
||||
In_First : Stream_Element_Offset;
|
||||
Out_Last : Stream_Element_Offset;
|
||||
begin
|
||||
Main : loop
|
||||
Data_In (In_Buffer, Last);
|
||||
|
||||
In_First := In_Buffer'First;
|
||||
|
||||
loop
|
||||
Translate
|
||||
(Filter => Filter,
|
||||
In_Data => In_Buffer (In_First .. Last),
|
||||
In_Last => In_Last,
|
||||
Out_Data => Out_Buffer,
|
||||
Out_Last => Out_Last,
|
||||
Flush => Flush_Finish (Last < In_Buffer'First));
|
||||
|
||||
if Out_Buffer'First <= Out_Last then
|
||||
Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
|
||||
end if;
|
||||
|
||||
exit Main when Stream_End (Filter);
|
||||
|
||||
-- The end of in buffer.
|
||||
|
||||
exit when In_Last = Last;
|
||||
|
||||
In_First := In_Last + 1;
|
||||
end loop;
|
||||
end loop Main;
|
||||
|
||||
end Generic_Translate;
|
||||
|
||||
------------------
|
||||
-- Inflate_Init --
|
||||
------------------
|
||||
|
||||
procedure Inflate_Init
|
||||
(Filter : in out Filter_Type;
|
||||
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
|
||||
Header : in Header_Type := Default)
|
||||
is
|
||||
use type Thin.Int;
|
||||
Win_Bits : Thin.Int := Thin.Int (Window_Bits);
|
||||
|
||||
procedure Check_Version;
|
||||
-- Check the latest header types compatibility.
|
||||
|
||||
procedure Check_Version is
|
||||
begin
|
||||
if Version <= "1.1.4" then
|
||||
Raise_Error
|
||||
("Inflate header type " & Header_Type'Image (Header)
|
||||
& " incompatible with ZLib version " & Version);
|
||||
end if;
|
||||
end Check_Version;
|
||||
|
||||
begin
|
||||
if Is_Open (Filter) then
|
||||
raise Status_Error;
|
||||
end if;
|
||||
|
||||
case Header is
|
||||
when None =>
|
||||
Check_Version;
|
||||
|
||||
-- Inflate data without headers determined
|
||||
-- by negative Win_Bits.
|
||||
|
||||
Win_Bits := -Win_Bits;
|
||||
when GZip =>
|
||||
Check_Version;
|
||||
|
||||
-- Inflate gzip data defined by flag 16.
|
||||
|
||||
Win_Bits := Win_Bits + 16;
|
||||
when Auto =>
|
||||
Check_Version;
|
||||
|
||||
-- Inflate with automatic detection
|
||||
-- of gzip or native header defined by flag 32.
|
||||
|
||||
Win_Bits := Win_Bits + 32;
|
||||
when Default => null;
|
||||
end case;
|
||||
|
||||
Filter.Strm := new Z_Stream;
|
||||
Filter.Compression := False;
|
||||
Filter.Stream_End := False;
|
||||
Filter.Header := Header;
|
||||
|
||||
if Thin.Inflate_Init
|
||||
(To_Thin_Access (Filter.Strm), Win_Bits) /= Thin.Z_OK
|
||||
then
|
||||
Raise_Error (Filter.Strm.all);
|
||||
end if;
|
||||
end Inflate_Init;
|
||||
|
||||
-------------
|
||||
-- Is_Open --
|
||||
-------------
|
||||
|
||||
function Is_Open (Filter : in Filter_Type) return Boolean is
|
||||
begin
|
||||
return Filter.Strm /= null;
|
||||
end Is_Open;
|
||||
|
||||
-----------------
|
||||
-- Raise_Error --
|
||||
-----------------
|
||||
|
||||
procedure Raise_Error (Message : in String) is
|
||||
begin
|
||||
Ada.Exceptions.Raise_Exception (ZLib_Error'Identity, Message);
|
||||
end Raise_Error;
|
||||
|
||||
procedure Raise_Error (Stream : in Z_Stream) is
|
||||
begin
|
||||
Raise_Error (Last_Error_Message (Stream));
|
||||
end Raise_Error;
|
||||
|
||||
----------
|
||||
-- Read --
|
||||
----------
|
||||
|
||||
procedure Read
|
||||
(Filter : in out Filter_Type;
|
||||
Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode := No_Flush)
|
||||
is
|
||||
In_Last : Stream_Element_Offset;
|
||||
Item_First : Ada.Streams.Stream_Element_Offset := Item'First;
|
||||
V_Flush : Flush_Mode := Flush;
|
||||
|
||||
begin
|
||||
pragma Assert (Rest_First in Buffer'First .. Buffer'Last + 1);
|
||||
pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);
|
||||
|
||||
loop
|
||||
if Rest_Last = Buffer'First - 1 then
|
||||
V_Flush := Finish;
|
||||
|
||||
elsif Rest_First > Rest_Last then
|
||||
Read (Buffer, Rest_Last);
|
||||
Rest_First := Buffer'First;
|
||||
|
||||
if Rest_Last < Buffer'First then
|
||||
V_Flush := Finish;
|
||||
end if;
|
||||
end if;
|
||||
|
||||
Translate
|
||||
(Filter => Filter,
|
||||
In_Data => Buffer (Rest_First .. Rest_Last),
|
||||
In_Last => In_Last,
|
||||
Out_Data => Item (Item_First .. Item'Last),
|
||||
Out_Last => Last,
|
||||
Flush => V_Flush);
|
||||
|
||||
Rest_First := In_Last + 1;
|
||||
|
||||
exit when Stream_End (Filter)
|
||||
or else Last = Item'Last
|
||||
or else (Last >= Item'First and then Allow_Read_Some);
|
||||
|
||||
Item_First := Last + 1;
|
||||
end loop;
|
||||
end Read;
|
||||
|
||||
----------------
|
||||
-- Stream_End --
|
||||
----------------
|
||||
|
||||
function Stream_End (Filter : in Filter_Type) return Boolean is
|
||||
begin
|
||||
if Filter.Header = GZip and Filter.Compression then
|
||||
return Filter.Stream_End
|
||||
and then Filter.Offset = Footer_Array'Last + 1;
|
||||
else
|
||||
return Filter.Stream_End;
|
||||
end if;
|
||||
end Stream_End;
|
||||
|
||||
--------------
|
||||
-- Total_In --
|
||||
--------------
|
||||
|
||||
function Total_In (Filter : in Filter_Type) return Count is
|
||||
begin
|
||||
return Count (Thin.Total_In (To_Thin_Access (Filter.Strm).all));
|
||||
end Total_In;
|
||||
|
||||
---------------
|
||||
-- Total_Out --
|
||||
---------------
|
||||
|
||||
function Total_Out (Filter : in Filter_Type) return Count is
|
||||
begin
|
||||
return Count (Thin.Total_Out (To_Thin_Access (Filter.Strm).all));
|
||||
end Total_Out;
|
||||
|
||||
---------------
|
||||
-- Translate --
|
||||
---------------
|
||||
|
||||
procedure Translate
|
||||
(Filter : in out Filter_Type;
|
||||
In_Data : in Ada.Streams.Stream_Element_Array;
|
||||
In_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode) is
|
||||
begin
|
||||
if Filter.Header = GZip and then Filter.Compression then
|
||||
Translate_GZip
|
||||
(Filter => Filter,
|
||||
In_Data => In_Data,
|
||||
In_Last => In_Last,
|
||||
Out_Data => Out_Data,
|
||||
Out_Last => Out_Last,
|
||||
Flush => Flush);
|
||||
else
|
||||
Translate_Auto
|
||||
(Filter => Filter,
|
||||
In_Data => In_Data,
|
||||
In_Last => In_Last,
|
||||
Out_Data => Out_Data,
|
||||
Out_Last => Out_Last,
|
||||
Flush => Flush);
|
||||
end if;
|
||||
end Translate;
|
||||
|
||||
--------------------
|
||||
-- Translate_Auto --
|
||||
--------------------
|
||||
|
||||
procedure Translate_Auto
|
||||
(Filter : in out Filter_Type;
|
||||
In_Data : in Ada.Streams.Stream_Element_Array;
|
||||
In_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode)
|
||||
is
|
||||
use type Thin.Int;
|
||||
Code : Thin.Int;
|
||||
|
||||
begin
|
||||
if not Is_Open (Filter) then
|
||||
raise Status_Error;
|
||||
end if;
|
||||
|
||||
if Out_Data'Length = 0 and then In_Data'Length = 0 then
|
||||
raise Constraint_Error;
|
||||
end if;
|
||||
|
||||
Set_Out (Filter.Strm.all, Out_Data'Address, Out_Data'Length);
|
||||
Set_In (Filter.Strm.all, In_Data'Address, In_Data'Length);
|
||||
|
||||
Code := Flate (Filter.Compression).Step
|
||||
(To_Thin_Access (Filter.Strm),
|
||||
Thin.Int (Flush));
|
||||
|
||||
if Code = Thin.Z_STREAM_END then
|
||||
Filter.Stream_End := True;
|
||||
else
|
||||
Check_Error (Filter.Strm.all, Code);
|
||||
end if;
|
||||
|
||||
In_Last := In_Data'Last
|
||||
- Stream_Element_Offset (Avail_In (Filter.Strm.all));
|
||||
Out_Last := Out_Data'Last
|
||||
- Stream_Element_Offset (Avail_Out (Filter.Strm.all));
|
||||
end Translate_Auto;
|
||||
|
||||
--------------------
|
||||
-- Translate_GZip --
|
||||
--------------------
|
||||
|
||||
procedure Translate_GZip
|
||||
(Filter : in out Filter_Type;
|
||||
In_Data : in Ada.Streams.Stream_Element_Array;
|
||||
In_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode)
|
||||
is
|
||||
Out_First : Stream_Element_Offset;
|
||||
|
||||
procedure Add_Data (Data : in Stream_Element_Array);
|
||||
-- Add data to stream from the Filter.Offset till necessary,
|
||||
-- used for add gzip headr/footer.
|
||||
|
||||
procedure Put_32
|
||||
(Item : in out Stream_Element_Array;
|
||||
Data : in Unsigned_32);
|
||||
pragma Inline (Put_32);
|
||||
|
||||
--------------
|
||||
-- Add_Data --
|
||||
--------------
|
||||
|
||||
procedure Add_Data (Data : in Stream_Element_Array) is
|
||||
Data_First : Stream_Element_Offset renames Filter.Offset;
|
||||
Data_Last : Stream_Element_Offset;
|
||||
Data_Len : Stream_Element_Offset; -- -1
|
||||
Out_Len : Stream_Element_Offset; -- -1
|
||||
begin
|
||||
Out_First := Out_Last + 1;
|
||||
|
||||
if Data_First > Data'Last then
|
||||
return;
|
||||
end if;
|
||||
|
||||
Data_Len := Data'Last - Data_First;
|
||||
Out_Len := Out_Data'Last - Out_First;
|
||||
|
||||
if Data_Len <= Out_Len then
|
||||
Out_Last := Out_First + Data_Len;
|
||||
Data_Last := Data'Last;
|
||||
else
|
||||
Out_Last := Out_Data'Last;
|
||||
Data_Last := Data_First + Out_Len;
|
||||
end if;
|
||||
|
||||
Out_Data (Out_First .. Out_Last) := Data (Data_First .. Data_Last);
|
||||
|
||||
Data_First := Data_Last + 1;
|
||||
Out_First := Out_Last + 1;
|
||||
end Add_Data;
|
||||
|
||||
------------
|
||||
-- Put_32 --
|
||||
------------
|
||||
|
||||
procedure Put_32
|
||||
(Item : in out Stream_Element_Array;
|
||||
Data : in Unsigned_32)
|
||||
is
|
||||
D : Unsigned_32 := Data;
|
||||
begin
|
||||
for J in Item'First .. Item'First + 3 loop
|
||||
Item (J) := Stream_Element (D and 16#FF#);
|
||||
D := Shift_Right (D, 8);
|
||||
end loop;
|
||||
end Put_32;
|
||||
|
||||
begin
|
||||
Out_Last := Out_Data'First - 1;
|
||||
|
||||
if not Filter.Stream_End then
|
||||
Add_Data (Simple_GZip_Header);
|
||||
|
||||
Translate_Auto
|
||||
(Filter => Filter,
|
||||
In_Data => In_Data,
|
||||
In_Last => In_Last,
|
||||
Out_Data => Out_Data (Out_First .. Out_Data'Last),
|
||||
Out_Last => Out_Last,
|
||||
Flush => Flush);
|
||||
|
||||
CRC32 (Filter.CRC, In_Data (In_Data'First .. In_Last));
|
||||
end if;
|
||||
|
||||
if Filter.Stream_End and then Out_Last <= Out_Data'Last then
|
||||
-- This detection method would work only when
|
||||
-- Simple_GZip_Header'Last > Footer_Array'Last
|
||||
|
||||
if Filter.Offset = Simple_GZip_Header'Last + 1 then
|
||||
Filter.Offset := Footer_Array'First;
|
||||
end if;
|
||||
|
||||
declare
|
||||
Footer : Footer_Array;
|
||||
begin
|
||||
Put_32 (Footer, Filter.CRC);
|
||||
Put_32 (Footer (Footer'First + 4 .. Footer'Last),
|
||||
Unsigned_32 (Total_In (Filter)));
|
||||
Add_Data (Footer);
|
||||
end;
|
||||
end if;
|
||||
end Translate_GZip;
|
||||
|
||||
-------------
|
||||
-- Version --
|
||||
-------------
|
||||
|
||||
function Version return String is
|
||||
begin
|
||||
return Interfaces.C.Strings.Value (Thin.zlibVersion);
|
||||
end Version;
|
||||
|
||||
-----------
|
||||
-- Write --
|
||||
-----------
|
||||
|
||||
procedure Write
|
||||
(Filter : in out Filter_Type;
|
||||
Item : in Ada.Streams.Stream_Element_Array;
|
||||
Flush : in Flush_Mode := No_Flush)
|
||||
is
|
||||
Buffer : Stream_Element_Array (1 .. Buffer_Size);
|
||||
In_Last : Stream_Element_Offset;
|
||||
Out_Last : Stream_Element_Offset;
|
||||
In_First : Stream_Element_Offset := Item'First;
|
||||
begin
|
||||
if Item'Length = 0 and Flush = No_Flush then
|
||||
return;
|
||||
end if;
|
||||
|
||||
loop
|
||||
Translate
|
||||
(Filter => Filter,
|
||||
In_Data => Item (In_First .. Item'Last),
|
||||
In_Last => In_Last,
|
||||
Out_Data => Buffer,
|
||||
Out_Last => Out_Last,
|
||||
Flush => Flush);
|
||||
|
||||
if Out_Last >= Buffer'First then
|
||||
Write (Buffer (1 .. Out_Last));
|
||||
end if;
|
||||
|
||||
exit when In_Last = Item'Last or Stream_End (Filter);
|
||||
|
||||
In_First := In_Last + 1;
|
||||
end loop;
|
||||
end Write;
|
||||
|
||||
end ZLib;
|
||||
|
|
@ -0,0 +1,328 @@
|
|||
------------------------------------------------------------------------------
|
||||
-- ZLib for Ada thick binding. --
|
||||
-- --
|
||||
-- Copyright (C) 2002-2004 Dmitriy Anisimkov --
|
||||
-- --
|
||||
-- This library is free software; you can redistribute it and/or modify --
|
||||
-- it under the terms of the GNU General Public License as published by --
|
||||
-- the Free Software Foundation; either version 2 of the License, or (at --
|
||||
-- your option) any later version. --
|
||||
-- --
|
||||
-- This library is distributed in the hope that it will be useful, but --
|
||||
-- WITHOUT ANY WARRANTY; without even the implied warranty of --
|
||||
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
|
||||
-- General Public License for more details. --
|
||||
-- --
|
||||
-- You should have received a copy of the GNU General Public License --
|
||||
-- along with this library; if not, write to the Free Software Foundation, --
|
||||
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
|
||||
-- --
|
||||
-- As a special exception, if other files instantiate generics from this --
|
||||
-- unit, or you link this unit with other files to produce an executable, --
|
||||
-- this unit does not by itself cause the resulting executable to be --
|
||||
-- covered by the GNU General Public License. This exception does not --
|
||||
-- however invalidate any other reasons why the executable file might be --
|
||||
-- covered by the GNU Public License. --
|
||||
------------------------------------------------------------------------------
|
||||
|
||||
-- $Id: zlib.ads,v 1.26 2004/09/06 06:53:19 vagul Exp $
|
||||
|
||||
with Ada.Streams;
|
||||
|
||||
with Interfaces;
|
||||
|
||||
package ZLib is
|
||||
|
||||
ZLib_Error : exception;
|
||||
Status_Error : exception;
|
||||
|
||||
type Compression_Level is new Integer range -1 .. 9;
|
||||
|
||||
type Flush_Mode is private;
|
||||
|
||||
type Compression_Method is private;
|
||||
|
||||
type Window_Bits_Type is new Integer range 8 .. 15;
|
||||
|
||||
type Memory_Level_Type is new Integer range 1 .. 9;
|
||||
|
||||
type Unsigned_32 is new Interfaces.Unsigned_32;
|
||||
|
||||
type Strategy_Type is private;
|
||||
|
||||
type Header_Type is (None, Auto, Default, GZip);
|
||||
-- Header type usage have a some limitation for inflate.
|
||||
-- See comment for Inflate_Init.
|
||||
|
||||
subtype Count is Ada.Streams.Stream_Element_Count;
|
||||
|
||||
Default_Memory_Level : constant Memory_Level_Type := 8;
|
||||
Default_Window_Bits : constant Window_Bits_Type := 15;
|
||||
|
||||
----------------------------------
|
||||
-- Compression method constants --
|
||||
----------------------------------
|
||||
|
||||
Deflated : constant Compression_Method;
|
||||
-- Only one method allowed in this ZLib version
|
||||
|
||||
---------------------------------
|
||||
-- Compression level constants --
|
||||
---------------------------------
|
||||
|
||||
No_Compression : constant Compression_Level := 0;
|
||||
Best_Speed : constant Compression_Level := 1;
|
||||
Best_Compression : constant Compression_Level := 9;
|
||||
Default_Compression : constant Compression_Level := -1;
|
||||
|
||||
--------------------------
|
||||
-- Flush mode constants --
|
||||
--------------------------
|
||||
|
||||
No_Flush : constant Flush_Mode;
|
||||
-- Regular way for compression, no flush
|
||||
|
||||
Partial_Flush : constant Flush_Mode;
|
||||
-- Will be removed, use Z_SYNC_FLUSH instead
|
||||
|
||||
Sync_Flush : constant Flush_Mode;
|
||||
-- All pending output is flushed to the output buffer and the output
|
||||
-- is aligned on a byte boundary, so that the decompressor can get all
|
||||
-- input data available so far. (In particular avail_in is zero after the
|
||||
-- call if enough output space has been provided before the call.)
|
||||
-- Flushing may degrade compression for some compression algorithms and so
|
||||
-- it should be used only when necessary.
|
||||
|
||||
Block_Flush : constant Flush_Mode;
|
||||
-- Z_BLOCK requests that inflate() stop
|
||||
-- if and when it get to the next deflate block boundary. When decoding the
|
||||
-- zlib or gzip format, this will cause inflate() to return immediately
|
||||
-- after the header and before the first block. When doing a raw inflate,
|
||||
-- inflate() will go ahead and process the first block, and will return
|
||||
-- when it gets to the end of that block, or when it runs out of data.
|
||||
|
||||
Full_Flush : constant Flush_Mode;
|
||||
-- All output is flushed as with SYNC_FLUSH, and the compression state
|
||||
-- is reset so that decompression can restart from this point if previous
|
||||
-- compressed data has been damaged or if random access is desired. Using
|
||||
-- Full_Flush too often can seriously degrade the compression.
|
||||
|
||||
Finish : constant Flush_Mode;
|
||||
-- Just for tell the compressor that input data is complete.
|
||||
|
||||
------------------------------------
|
||||
-- Compression strategy constants --
|
||||
------------------------------------
|
||||
|
||||
-- RLE stategy could be used only in version 1.2.0 and later.
|
||||
|
||||
Filtered : constant Strategy_Type;
|
||||
Huffman_Only : constant Strategy_Type;
|
||||
RLE : constant Strategy_Type;
|
||||
Default_Strategy : constant Strategy_Type;
|
||||
|
||||
Default_Buffer_Size : constant := 4096;
|
||||
|
||||
type Filter_Type is tagged limited private;
|
||||
-- The filter is for compression and for decompression.
|
||||
-- The usage of the type is depend of its initialization.
|
||||
|
||||
function Version return String;
|
||||
pragma Inline (Version);
|
||||
-- Return string representation of the ZLib version.
|
||||
|
||||
procedure Deflate_Init
|
||||
(Filter : in out Filter_Type;
|
||||
Level : in Compression_Level := Default_Compression;
|
||||
Strategy : in Strategy_Type := Default_Strategy;
|
||||
Method : in Compression_Method := Deflated;
|
||||
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
|
||||
Memory_Level : in Memory_Level_Type := Default_Memory_Level;
|
||||
Header : in Header_Type := Default);
|
||||
-- Compressor initialization.
|
||||
-- When Header parameter is Auto or Default, then default zlib header
|
||||
-- would be provided for compressed data.
|
||||
-- When Header is GZip, then gzip header would be set instead of
|
||||
-- default header.
|
||||
-- When Header is None, no header would be set for compressed data.
|
||||
|
||||
procedure Inflate_Init
|
||||
(Filter : in out Filter_Type;
|
||||
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
|
||||
Header : in Header_Type := Default);
|
||||
-- Decompressor initialization.
|
||||
-- Default header type mean that ZLib default header is expecting in the
|
||||
-- input compressed stream.
|
||||
-- Header type None mean that no header is expecting in the input stream.
|
||||
-- GZip header type mean that GZip header is expecting in the
|
||||
-- input compressed stream.
|
||||
-- Auto header type mean that header type (GZip or Native) would be
|
||||
-- detected automatically in the input stream.
|
||||
-- Note that header types parameter values None, GZip and Auto are
|
||||
-- supported for inflate routine only in ZLib versions 1.2.0.2 and later.
|
||||
-- Deflate_Init is supporting all header types.
|
||||
|
||||
function Is_Open (Filter : in Filter_Type) return Boolean;
|
||||
pragma Inline (Is_Open);
|
||||
-- Is the filter opened for compression or decompression.
|
||||
|
||||
procedure Close
|
||||
(Filter : in out Filter_Type;
|
||||
Ignore_Error : in Boolean := False);
|
||||
-- Closing the compression or decompressor.
|
||||
-- If stream is closing before the complete and Ignore_Error is False,
|
||||
-- The exception would be raised.
|
||||
|
||||
generic
|
||||
with procedure Data_In
|
||||
(Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset);
|
||||
with procedure Data_Out
|
||||
(Item : in Ada.Streams.Stream_Element_Array);
|
||||
procedure Generic_Translate
|
||||
(Filter : in out Filter_Type;
|
||||
In_Buffer_Size : in Integer := Default_Buffer_Size;
|
||||
Out_Buffer_Size : in Integer := Default_Buffer_Size);
|
||||
-- Compress/decompress data fetch from Data_In routine and pass the result
|
||||
-- to the Data_Out routine. User should provide Data_In and Data_Out
|
||||
-- for compression/decompression data flow.
|
||||
-- Compression or decompression depend on Filter initialization.
|
||||
|
||||
function Total_In (Filter : in Filter_Type) return Count;
|
||||
pragma Inline (Total_In);
|
||||
-- Returns total number of input bytes read so far
|
||||
|
||||
function Total_Out (Filter : in Filter_Type) return Count;
|
||||
pragma Inline (Total_Out);
|
||||
-- Returns total number of bytes output so far
|
||||
|
||||
function CRC32
|
||||
(CRC : in Unsigned_32;
|
||||
Data : in Ada.Streams.Stream_Element_Array)
|
||||
return Unsigned_32;
|
||||
pragma Inline (CRC32);
|
||||
-- Compute CRC32, it could be necessary for make gzip format
|
||||
|
||||
procedure CRC32
|
||||
(CRC : in out Unsigned_32;
|
||||
Data : in Ada.Streams.Stream_Element_Array);
|
||||
pragma Inline (CRC32);
|
||||
-- Compute CRC32, it could be necessary for make gzip format
|
||||
|
||||
-------------------------------------------------
|
||||
-- Below is more complex low level routines. --
|
||||
-------------------------------------------------
|
||||
|
||||
procedure Translate
|
||||
(Filter : in out Filter_Type;
|
||||
In_Data : in Ada.Streams.Stream_Element_Array;
|
||||
In_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode);
|
||||
-- Compress/decompress the In_Data buffer and place the result into
|
||||
-- Out_Data. In_Last is the index of last element from In_Data accepted by
|
||||
-- the Filter. Out_Last is the last element of the received data from
|
||||
-- Filter. To tell the filter that incoming data are complete put the
|
||||
-- Flush parameter to Finish.
|
||||
|
||||
function Stream_End (Filter : in Filter_Type) return Boolean;
|
||||
pragma Inline (Stream_End);
|
||||
-- Return the true when the stream is complete.
|
||||
|
||||
procedure Flush
|
||||
(Filter : in out Filter_Type;
|
||||
Out_Data : out Ada.Streams.Stream_Element_Array;
|
||||
Out_Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode);
|
||||
pragma Inline (Flush);
|
||||
-- Flushing the data from the compressor.
|
||||
|
||||
generic
|
||||
with procedure Write
|
||||
(Item : in Ada.Streams.Stream_Element_Array);
|
||||
-- User should provide this routine for accept
|
||||
-- compressed/decompressed data.
|
||||
|
||||
Buffer_Size : in Ada.Streams.Stream_Element_Offset
|
||||
:= Default_Buffer_Size;
|
||||
-- Buffer size for Write user routine.
|
||||
|
||||
procedure Write
|
||||
(Filter : in out Filter_Type;
|
||||
Item : in Ada.Streams.Stream_Element_Array;
|
||||
Flush : in Flush_Mode := No_Flush);
|
||||
-- Compress/Decompress data from Item to the generic parameter procedure
|
||||
-- Write. Output buffer size could be set in Buffer_Size generic parameter.
|
||||
|
||||
generic
|
||||
with procedure Read
|
||||
(Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset);
|
||||
-- User should provide data for compression/decompression
|
||||
-- thru this routine.
|
||||
|
||||
Buffer : in out Ada.Streams.Stream_Element_Array;
|
||||
-- Buffer for keep remaining data from the previous
|
||||
-- back read.
|
||||
|
||||
Rest_First, Rest_Last : in out Ada.Streams.Stream_Element_Offset;
|
||||
-- Rest_First have to be initialized to Buffer'Last + 1
|
||||
-- Rest_Last have to be initialized to Buffer'Last
|
||||
-- before usage.
|
||||
|
||||
Allow_Read_Some : in Boolean := False;
|
||||
-- Is it allowed to return Last < Item'Last before end of data.
|
||||
|
||||
procedure Read
|
||||
(Filter : in out Filter_Type;
|
||||
Item : out Ada.Streams.Stream_Element_Array;
|
||||
Last : out Ada.Streams.Stream_Element_Offset;
|
||||
Flush : in Flush_Mode := No_Flush);
|
||||
-- Compress/Decompress data from generic parameter procedure Read to the
|
||||
-- Item. User should provide Buffer and initialized Rest_First, Rest_Last
|
||||
-- indicators. If Allow_Read_Some is True, Read routines could return
|
||||
-- Last < Item'Last only at end of stream.
|
||||
|
||||
private
|
||||
|
||||
use Ada.Streams;
|
||||
|
||||
pragma Assert (Ada.Streams.Stream_Element'Size = 8);
|
||||
pragma Assert (Ada.Streams.Stream_Element'Modulus = 2**8);
|
||||
|
||||
type Flush_Mode is new Integer range 0 .. 5;
|
||||
|
||||
type Compression_Method is new Integer range 8 .. 8;
|
||||
|
||||
type Strategy_Type is new Integer range 0 .. 3;
|
||||
|
||||
No_Flush : constant Flush_Mode := 0;
|
||||
Partial_Flush : constant Flush_Mode := 1;
|
||||
Sync_Flush : constant Flush_Mode := 2;
|
||||
Full_Flush : constant Flush_Mode := 3;
|
||||
Finish : constant Flush_Mode := 4;
|
||||
Block_Flush : constant Flush_Mode := 5;
|
||||
|
||||
Filtered : constant Strategy_Type := 1;
|
||||
Huffman_Only : constant Strategy_Type := 2;
|
||||
RLE : constant Strategy_Type := 3;
|
||||
Default_Strategy : constant Strategy_Type := 0;
|
||||
|
||||
Deflated : constant Compression_Method := 8;
|
||||
|
||||
type Z_Stream;
|
||||
|
||||
type Z_Stream_Access is access all Z_Stream;
|
||||
|
||||
type Filter_Type is tagged limited record
|
||||
Strm : Z_Stream_Access;
|
||||
Compression : Boolean;
|
||||
Stream_End : Boolean;
|
||||
Header : Header_Type;
|
||||
CRC : Unsigned_32;
|
||||
Offset : Stream_Element_Offset;
|
||||
-- Offset for gzip header/footer output.
|
||||
end record;
|
||||
|
||||
end ZLib;
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
project Zlib is
|
||||
|
||||
for Languages use ("Ada");
|
||||
for Source_Dirs use (".");
|
||||
for Object_Dir use ".";
|
||||
for Main use ("test.adb", "mtest.adb", "read.adb", "buffer_demo");
|
||||
|
||||
package Compiler is
|
||||
for Default_Switches ("ada") use ("-gnatwcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
|
||||
end Compiler;
|
||||
|
||||
package Linker is
|
||||
for Default_Switches ("ada") use ("-lz");
|
||||
end Linker;
|
||||
|
||||
package Builder is
|
||||
for Default_Switches ("ada") use ("-s", "-gnatQ");
|
||||
end Builder;
|
||||
|
||||
end Zlib;
|
||||
|
|
@ -0,0 +1,452 @@
|
|||
/*
|
||||
* match.S -- optimized version of longest_match()
|
||||
* based on the similar work by Gilles Vollant, and Brian Raiter, written 1998
|
||||
*
|
||||
* This is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the BSD License. Use by owners of Che Guevarra
|
||||
* parafernalia is prohibited, where possible, and highly discouraged
|
||||
* elsewhere.
|
||||
*/
|
||||
|
||||
#ifndef NO_UNDERLINE
|
||||
# define match_init _match_init
|
||||
# define longest_match _longest_match
|
||||
#endif
|
||||
|
||||
#define scanend ebx
|
||||
#define scanendw bx
|
||||
#define chainlenwmask edx /* high word: current chain len low word: s->wmask */
|
||||
#define curmatch rsi
|
||||
#define curmatchd esi
|
||||
#define windowbestlen r8
|
||||
#define scanalign r9
|
||||
#define scanalignd r9d
|
||||
#define window r10
|
||||
#define bestlen r11
|
||||
#define bestlend r11d
|
||||
#define scanstart r12d
|
||||
#define scanstartw r12w
|
||||
#define scan r13
|
||||
#define nicematch r14d
|
||||
#define limit r15
|
||||
#define limitd r15d
|
||||
#define prev rcx
|
||||
|
||||
/*
|
||||
* The 258 is a "magic number, not a parameter -- changing it
|
||||
* breaks the hell loose
|
||||
*/
|
||||
#define MAX_MATCH (258)
|
||||
#define MIN_MATCH (3)
|
||||
#define MIN_LOOKAHEAD (MAX_MATCH + MIN_MATCH + 1)
|
||||
#define MAX_MATCH_8 ((MAX_MATCH + 7) & ~7)
|
||||
|
||||
/* stack frame offsets */
|
||||
#define LocalVarsSize (112)
|
||||
#define _chainlenwmask ( 8-LocalVarsSize)(%rsp)
|
||||
#define _windowbestlen (16-LocalVarsSize)(%rsp)
|
||||
#define save_r14 (24-LocalVarsSize)(%rsp)
|
||||
#define save_rsi (32-LocalVarsSize)(%rsp)
|
||||
#define save_rbx (40-LocalVarsSize)(%rsp)
|
||||
#define save_r12 (56-LocalVarsSize)(%rsp)
|
||||
#define save_r13 (64-LocalVarsSize)(%rsp)
|
||||
#define save_r15 (80-LocalVarsSize)(%rsp)
|
||||
|
||||
|
||||
.globl match_init, longest_match
|
||||
|
||||
/*
|
||||
* On AMD64 the first argument of a function (in our case -- the pointer to
|
||||
* deflate_state structure) is passed in %rdi, hence our offsets below are
|
||||
* all off of that.
|
||||
*/
|
||||
|
||||
/* you can check the structure offset by running
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include "deflate.h"
|
||||
|
||||
void print_depl()
|
||||
{
|
||||
deflate_state ds;
|
||||
deflate_state *s=&ds;
|
||||
printf("size pointer=%u\n",(int)sizeof(void*));
|
||||
|
||||
printf("#define dsWSize (%3u)(%%rdi)\n",(int)(((char*)&(s->w_size))-((char*)s)));
|
||||
printf("#define dsWMask (%3u)(%%rdi)\n",(int)(((char*)&(s->w_mask))-((char*)s)));
|
||||
printf("#define dsWindow (%3u)(%%rdi)\n",(int)(((char*)&(s->window))-((char*)s)));
|
||||
printf("#define dsPrev (%3u)(%%rdi)\n",(int)(((char*)&(s->prev))-((char*)s)));
|
||||
printf("#define dsMatchLen (%3u)(%%rdi)\n",(int)(((char*)&(s->match_length))-((char*)s)));
|
||||
printf("#define dsPrevMatch (%3u)(%%rdi)\n",(int)(((char*)&(s->prev_match))-((char*)s)));
|
||||
printf("#define dsStrStart (%3u)(%%rdi)\n",(int)(((char*)&(s->strstart))-((char*)s)));
|
||||
printf("#define dsMatchStart (%3u)(%%rdi)\n",(int)(((char*)&(s->match_start))-((char*)s)));
|
||||
printf("#define dsLookahead (%3u)(%%rdi)\n",(int)(((char*)&(s->lookahead))-((char*)s)));
|
||||
printf("#define dsPrevLen (%3u)(%%rdi)\n",(int)(((char*)&(s->prev_length))-((char*)s)));
|
||||
printf("#define dsMaxChainLen (%3u)(%%rdi)\n",(int)(((char*)&(s->max_chain_length))-((char*)s)));
|
||||
printf("#define dsGoodMatch (%3u)(%%rdi)\n",(int)(((char*)&(s->good_match))-((char*)s)));
|
||||
printf("#define dsNiceMatch (%3u)(%%rdi)\n",(int)(((char*)&(s->nice_match))-((char*)s)));
|
||||
}
|
||||
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
to compile for XCode 3.2 on MacOSX x86_64
|
||||
- run "gcc -g -c -DXCODE_MAC_X64_STRUCTURE amd64-match.S"
|
||||
*/
|
||||
|
||||
|
||||
#ifndef CURRENT_LINX_XCODE_MAC_X64_STRUCTURE
|
||||
#define dsWSize ( 68)(%rdi)
|
||||
#define dsWMask ( 76)(%rdi)
|
||||
#define dsWindow ( 80)(%rdi)
|
||||
#define dsPrev ( 96)(%rdi)
|
||||
#define dsMatchLen (144)(%rdi)
|
||||
#define dsPrevMatch (148)(%rdi)
|
||||
#define dsStrStart (156)(%rdi)
|
||||
#define dsMatchStart (160)(%rdi)
|
||||
#define dsLookahead (164)(%rdi)
|
||||
#define dsPrevLen (168)(%rdi)
|
||||
#define dsMaxChainLen (172)(%rdi)
|
||||
#define dsGoodMatch (188)(%rdi)
|
||||
#define dsNiceMatch (192)(%rdi)
|
||||
|
||||
#else
|
||||
|
||||
#ifndef STRUCT_OFFSET
|
||||
# define STRUCT_OFFSET (0)
|
||||
#endif
|
||||
|
||||
|
||||
#define dsWSize ( 56 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsWMask ( 64 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsWindow ( 72 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsPrev ( 88 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsMatchLen (136 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsPrevMatch (140 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsStrStart (148 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsMatchStart (152 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsLookahead (156 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsPrevLen (160 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsMaxChainLen (164 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsGoodMatch (180 + STRUCT_OFFSET)(%rdi)
|
||||
#define dsNiceMatch (184 + STRUCT_OFFSET)(%rdi)
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
|
||||
.text
|
||||
|
||||
/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
|
||||
|
||||
longest_match:
|
||||
/*
|
||||
* Retrieve the function arguments. %curmatch will hold cur_match
|
||||
* throughout the entire function (passed via rsi on amd64).
|
||||
* rdi will hold the pointer to the deflate_state (first arg on amd64)
|
||||
*/
|
||||
mov %rsi, save_rsi
|
||||
mov %rbx, save_rbx
|
||||
mov %r12, save_r12
|
||||
mov %r13, save_r13
|
||||
mov %r14, save_r14
|
||||
mov %r15, save_r15
|
||||
|
||||
/* uInt wmask = s->w_mask; */
|
||||
/* unsigned chain_length = s->max_chain_length; */
|
||||
/* if (s->prev_length >= s->good_match) { */
|
||||
/* chain_length >>= 2; */
|
||||
/* } */
|
||||
|
||||
movl dsPrevLen, %eax
|
||||
movl dsGoodMatch, %ebx
|
||||
cmpl %ebx, %eax
|
||||
movl dsWMask, %eax
|
||||
movl dsMaxChainLen, %chainlenwmask
|
||||
jl LastMatchGood
|
||||
shrl $2, %chainlenwmask
|
||||
LastMatchGood:
|
||||
|
||||
/* chainlen is decremented once beforehand so that the function can */
|
||||
/* use the sign flag instead of the zero flag for the exit test. */
|
||||
/* It is then shifted into the high word, to make room for the wmask */
|
||||
/* value, which it will always accompany. */
|
||||
|
||||
decl %chainlenwmask
|
||||
shll $16, %chainlenwmask
|
||||
orl %eax, %chainlenwmask
|
||||
|
||||
/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; */
|
||||
|
||||
movl dsNiceMatch, %eax
|
||||
movl dsLookahead, %ebx
|
||||
cmpl %eax, %ebx
|
||||
jl LookaheadLess
|
||||
movl %eax, %ebx
|
||||
LookaheadLess: movl %ebx, %nicematch
|
||||
|
||||
/* register Bytef *scan = s->window + s->strstart; */
|
||||
|
||||
mov dsWindow, %window
|
||||
movl dsStrStart, %limitd
|
||||
lea (%limit, %window), %scan
|
||||
|
||||
/* Determine how many bytes the scan ptr is off from being */
|
||||
/* dword-aligned. */
|
||||
|
||||
mov %scan, %scanalign
|
||||
negl %scanalignd
|
||||
andl $3, %scanalignd
|
||||
|
||||
/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */
|
||||
/* s->strstart - (IPos)MAX_DIST(s) : NIL; */
|
||||
|
||||
movl dsWSize, %eax
|
||||
subl $MIN_LOOKAHEAD, %eax
|
||||
xorl %ecx, %ecx
|
||||
subl %eax, %limitd
|
||||
cmovng %ecx, %limitd
|
||||
|
||||
/* int best_len = s->prev_length; */
|
||||
|
||||
movl dsPrevLen, %bestlend
|
||||
|
||||
/* Store the sum of s->window + best_len in %windowbestlen locally, and in memory. */
|
||||
|
||||
lea (%window, %bestlen), %windowbestlen
|
||||
mov %windowbestlen, _windowbestlen
|
||||
|
||||
/* register ush scan_start = *(ushf*)scan; */
|
||||
/* register ush scan_end = *(ushf*)(scan+best_len-1); */
|
||||
/* Posf *prev = s->prev; */
|
||||
|
||||
movzwl (%scan), %scanstart
|
||||
movzwl -1(%scan, %bestlen), %scanend
|
||||
mov dsPrev, %prev
|
||||
|
||||
/* Jump into the main loop. */
|
||||
|
||||
movl %chainlenwmask, _chainlenwmask
|
||||
jmp LoopEntry
|
||||
|
||||
.balign 16
|
||||
|
||||
/* do {
|
||||
* match = s->window + cur_match;
|
||||
* if (*(ushf*)(match+best_len-1) != scan_end ||
|
||||
* *(ushf*)match != scan_start) continue;
|
||||
* [...]
|
||||
* } while ((cur_match = prev[cur_match & wmask]) > limit
|
||||
* && --chain_length != 0);
|
||||
*
|
||||
* Here is the inner loop of the function. The function will spend the
|
||||
* majority of its time in this loop, and majority of that time will
|
||||
* be spent in the first ten instructions.
|
||||
*/
|
||||
LookupLoop:
|
||||
andl %chainlenwmask, %curmatchd
|
||||
movzwl (%prev, %curmatch, 2), %curmatchd
|
||||
cmpl %limitd, %curmatchd
|
||||
jbe LeaveNow
|
||||
subl $0x00010000, %chainlenwmask
|
||||
js LeaveNow
|
||||
LoopEntry: cmpw -1(%windowbestlen, %curmatch), %scanendw
|
||||
jne LookupLoop
|
||||
cmpw %scanstartw, (%window, %curmatch)
|
||||
jne LookupLoop
|
||||
|
||||
/* Store the current value of chainlen. */
|
||||
movl %chainlenwmask, _chainlenwmask
|
||||
|
||||
/* %scan is the string under scrutiny, and %prev to the string we */
|
||||
/* are hoping to match it up with. In actuality, %esi and %edi are */
|
||||
/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */
|
||||
/* initialized to -(MAX_MATCH_8 - scanalign). */
|
||||
|
||||
mov $(-MAX_MATCH_8), %rdx
|
||||
lea (%curmatch, %window), %windowbestlen
|
||||
lea MAX_MATCH_8(%windowbestlen, %scanalign), %windowbestlen
|
||||
lea MAX_MATCH_8(%scan, %scanalign), %prev
|
||||
|
||||
/* the prefetching below makes very little difference... */
|
||||
prefetcht1 (%windowbestlen, %rdx)
|
||||
prefetcht1 (%prev, %rdx)
|
||||
|
||||
/*
|
||||
* Test the strings for equality, 8 bytes at a time. At the end,
|
||||
* adjust %rdx so that it is offset to the exact byte that mismatched.
|
||||
*
|
||||
* It should be confessed that this loop usually does not represent
|
||||
* much of the total running time. Replacing it with a more
|
||||
* straightforward "rep cmpsb" would not drastically degrade
|
||||
* performance -- unrolling it, for example, makes no difference.
|
||||
*/
|
||||
|
||||
#undef USE_SSE /* works, but is 6-7% slower, than non-SSE... */
|
||||
|
||||
LoopCmps:
|
||||
#ifdef USE_SSE
|
||||
/* Preload the SSE registers */
|
||||
movdqu (%windowbestlen, %rdx), %xmm1
|
||||
movdqu (%prev, %rdx), %xmm2
|
||||
pcmpeqb %xmm2, %xmm1
|
||||
movdqu 16(%windowbestlen, %rdx), %xmm3
|
||||
movdqu 16(%prev, %rdx), %xmm4
|
||||
pcmpeqb %xmm4, %xmm3
|
||||
movdqu 32(%windowbestlen, %rdx), %xmm5
|
||||
movdqu 32(%prev, %rdx), %xmm6
|
||||
pcmpeqb %xmm6, %xmm5
|
||||
movdqu 48(%windowbestlen, %rdx), %xmm7
|
||||
movdqu 48(%prev, %rdx), %xmm8
|
||||
pcmpeqb %xmm8, %xmm7
|
||||
|
||||
/* Check the comparisions' results */
|
||||
pmovmskb %xmm1, %rax
|
||||
notw %ax
|
||||
bsfw %ax, %ax
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
/* this is the only iteration of the loop with a possibility of having
|
||||
incremented rdx by 0x108 (each loop iteration add 16*4 = 0x40
|
||||
and (0x40*4)+8=0x108 */
|
||||
add $8, %rdx
|
||||
jz LenMaximum
|
||||
add $8, %rdx
|
||||
|
||||
|
||||
pmovmskb %xmm3, %rax
|
||||
notw %ax
|
||||
bsfw %ax, %ax
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
|
||||
add $16, %rdx
|
||||
|
||||
|
||||
pmovmskb %xmm5, %rax
|
||||
notw %ax
|
||||
bsfw %ax, %ax
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
add $16, %rdx
|
||||
|
||||
|
||||
pmovmskb %xmm7, %rax
|
||||
notw %ax
|
||||
bsfw %ax, %ax
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
add $16, %rdx
|
||||
|
||||
jmp LoopCmps
|
||||
LeaveLoopCmps: add %rax, %rdx
|
||||
#else
|
||||
mov (%windowbestlen, %rdx), %rax
|
||||
xor (%prev, %rdx), %rax
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
mov 8(%windowbestlen, %rdx), %rax
|
||||
xor 8(%prev, %rdx), %rax
|
||||
jnz LeaveLoopCmps8
|
||||
|
||||
mov 16(%windowbestlen, %rdx), %rax
|
||||
xor 16(%prev, %rdx), %rax
|
||||
jnz LeaveLoopCmps16
|
||||
|
||||
add $24, %rdx
|
||||
jnz LoopCmps
|
||||
jmp LenMaximum
|
||||
# if 0
|
||||
/*
|
||||
* This three-liner is tantalizingly simple, but bsf is a slow instruction,
|
||||
* and the complicated alternative down below is quite a bit faster. Sad...
|
||||
*/
|
||||
|
||||
LeaveLoopCmps: bsf %rax, %rax /* find the first non-zero bit */
|
||||
shrl $3, %eax /* divide by 8 to get the byte */
|
||||
add %rax, %rdx
|
||||
# else
|
||||
LeaveLoopCmps16:
|
||||
add $8, %rdx
|
||||
LeaveLoopCmps8:
|
||||
add $8, %rdx
|
||||
LeaveLoopCmps: testl $0xFFFFFFFF, %eax /* Check the first 4 bytes */
|
||||
jnz Check16
|
||||
add $4, %rdx
|
||||
shr $32, %rax
|
||||
Check16: testw $0xFFFF, %ax
|
||||
jnz LenLower
|
||||
add $2, %rdx
|
||||
shrl $16, %eax
|
||||
LenLower: subb $1, %al
|
||||
adc $0, %rdx
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Calculate the length of the match. If it is longer than MAX_MATCH, */
|
||||
/* then automatically accept it as the best possible match and leave. */
|
||||
|
||||
lea (%prev, %rdx), %rax
|
||||
sub %scan, %rax
|
||||
cmpl $MAX_MATCH, %eax
|
||||
jge LenMaximum
|
||||
|
||||
/* If the length of the match is not longer than the best match we */
|
||||
/* have so far, then forget it and return to the lookup loop. */
|
||||
|
||||
cmpl %bestlend, %eax
|
||||
jg LongerMatch
|
||||
mov _windowbestlen, %windowbestlen
|
||||
mov dsPrev, %prev
|
||||
movl _chainlenwmask, %edx
|
||||
jmp LookupLoop
|
||||
|
||||
/* s->match_start = cur_match; */
|
||||
/* best_len = len; */
|
||||
/* if (len >= nice_match) break; */
|
||||
/* scan_end = *(ushf*)(scan+best_len-1); */
|
||||
|
||||
LongerMatch:
|
||||
movl %eax, %bestlend
|
||||
movl %curmatchd, dsMatchStart
|
||||
cmpl %nicematch, %eax
|
||||
jge LeaveNow
|
||||
|
||||
lea (%window, %bestlen), %windowbestlen
|
||||
mov %windowbestlen, _windowbestlen
|
||||
|
||||
movzwl -1(%scan, %rax), %scanend
|
||||
mov dsPrev, %prev
|
||||
movl _chainlenwmask, %chainlenwmask
|
||||
jmp LookupLoop
|
||||
|
||||
/* Accept the current string, with the maximum possible length. */
|
||||
|
||||
LenMaximum:
|
||||
movl $MAX_MATCH, %bestlend
|
||||
movl %curmatchd, dsMatchStart
|
||||
|
||||
/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */
|
||||
/* return s->lookahead; */
|
||||
|
||||
LeaveNow:
|
||||
movl dsLookahead, %eax
|
||||
cmpl %eax, %bestlend
|
||||
cmovngl %bestlend, %eax
|
||||
LookaheadRet:
|
||||
|
||||
/* Restore the registers and return from whence we came. */
|
||||
|
||||
mov save_rsi, %rsi
|
||||
mov save_rbx, %rbx
|
||||
mov save_r12, %r12
|
||||
mov save_r13, %r13
|
||||
mov save_r14, %r14
|
||||
mov save_r15, %r15
|
||||
|
||||
ret
|
||||
|
||||
match_init: ret
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
This is a patched version of zlib, modified to use
|
||||
Pentium-Pro-optimized assembly code in the deflation algorithm. The
|
||||
files changed/added by this patch are:
|
||||
|
||||
README.686
|
||||
match.S
|
||||
|
||||
The speedup that this patch provides varies, depending on whether the
|
||||
compiler used to build the original version of zlib falls afoul of the
|
||||
PPro's speed traps. My own tests show a speedup of around 10-20% at
|
||||
the default compression level, and 20-30% using -9, against a version
|
||||
compiled using gcc 2.7.2.3. Your mileage may vary.
|
||||
|
||||
Note that this code has been tailored for the PPro/PII in particular,
|
||||
and will not perform particuarly well on a Pentium.
|
||||
|
||||
If you are using an assembler other than GNU as, you will have to
|
||||
translate match.S to use your assembler's syntax. (Have fun.)
|
||||
|
||||
Brian Raiter
|
||||
breadbox@muppetlabs.com
|
||||
April, 1998
|
||||
|
||||
|
||||
Added for zlib 1.1.3:
|
||||
|
||||
The patches come from
|
||||
http://www.muppetlabs.com/~breadbox/software/assembly.html
|
||||
|
||||
To compile zlib with this asm file, copy match.S to the zlib directory
|
||||
then do:
|
||||
|
||||
CFLAGS="-O3 -DASMV" ./configure
|
||||
make OBJA=match.o
|
||||
|
||||
|
||||
Update:
|
||||
|
||||
I've been ignoring these assembly routines for years, believing that
|
||||
gcc's generated code had caught up with it sometime around gcc 2.95
|
||||
and the major rearchitecting of the Pentium 4. However, I recently
|
||||
learned that, despite what I believed, this code still has some life
|
||||
in it. On the Pentium 4 and AMD64 chips, it continues to run about 8%
|
||||
faster than the code produced by gcc 4.1.
|
||||
|
||||
In acknowledgement of its continuing usefulness, I've altered the
|
||||
license to match that of the rest of zlib. Share and Enjoy!
|
||||
|
||||
Brian Raiter
|
||||
breadbox@muppetlabs.com
|
||||
April, 2007
|
||||
|
|
@ -0,0 +1,357 @@
|
|||
/* match.S -- x86 assembly version of the zlib longest_match() function.
|
||||
* Optimized for the Intel 686 chips (PPro and later).
|
||||
*
|
||||
* Copyright (C) 1998, 2007 Brian Raiter <breadbox@muppetlabs.com>
|
||||
*
|
||||
* This software is provided 'as-is', without any express or implied
|
||||
* warranty. In no event will the author be held liable for any damages
|
||||
* arising from the use of this software.
|
||||
*
|
||||
* Permission is granted to anyone to use this software for any purpose,
|
||||
* including commercial applications, and to alter it and redistribute it
|
||||
* freely, subject to the following restrictions:
|
||||
*
|
||||
* 1. The origin of this software must not be misrepresented; you must not
|
||||
* claim that you wrote the original software. If you use this software
|
||||
* in a product, an acknowledgment in the product documentation would be
|
||||
* appreciated but is not required.
|
||||
* 2. Altered source versions must be plainly marked as such, and must not be
|
||||
* misrepresented as being the original software.
|
||||
* 3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
|
||||
#ifndef NO_UNDERLINE
|
||||
#define match_init _match_init
|
||||
#define longest_match _longest_match
|
||||
#endif
|
||||
|
||||
#define MAX_MATCH (258)
|
||||
#define MIN_MATCH (3)
|
||||
#define MIN_LOOKAHEAD (MAX_MATCH + MIN_MATCH + 1)
|
||||
#define MAX_MATCH_8 ((MAX_MATCH + 7) & ~7)
|
||||
|
||||
/* stack frame offsets */
|
||||
|
||||
#define chainlenwmask 0 /* high word: current chain len */
|
||||
/* low word: s->wmask */
|
||||
#define window 4 /* local copy of s->window */
|
||||
#define windowbestlen 8 /* s->window + bestlen */
|
||||
#define scanstart 16 /* first two bytes of string */
|
||||
#define scanend 12 /* last two bytes of string */
|
||||
#define scanalign 20 /* dword-misalignment of string */
|
||||
#define nicematch 24 /* a good enough match size */
|
||||
#define bestlen 28 /* size of best match so far */
|
||||
#define scan 32 /* ptr to string wanting match */
|
||||
|
||||
#define LocalVarsSize (36)
|
||||
/* saved ebx 36 */
|
||||
/* saved edi 40 */
|
||||
/* saved esi 44 */
|
||||
/* saved ebp 48 */
|
||||
/* return address 52 */
|
||||
#define deflatestate 56 /* the function arguments */
|
||||
#define curmatch 60
|
||||
|
||||
/* All the +zlib1222add offsets are due to the addition of fields
|
||||
* in zlib in the deflate_state structure since the asm code was first written
|
||||
* (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
|
||||
* (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
|
||||
* if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
|
||||
*/
|
||||
|
||||
#define zlib1222add (8)
|
||||
|
||||
#define dsWSize (36+zlib1222add)
|
||||
#define dsWMask (44+zlib1222add)
|
||||
#define dsWindow (48+zlib1222add)
|
||||
#define dsPrev (56+zlib1222add)
|
||||
#define dsMatchLen (88+zlib1222add)
|
||||
#define dsPrevMatch (92+zlib1222add)
|
||||
#define dsStrStart (100+zlib1222add)
|
||||
#define dsMatchStart (104+zlib1222add)
|
||||
#define dsLookahead (108+zlib1222add)
|
||||
#define dsPrevLen (112+zlib1222add)
|
||||
#define dsMaxChainLen (116+zlib1222add)
|
||||
#define dsGoodMatch (132+zlib1222add)
|
||||
#define dsNiceMatch (136+zlib1222add)
|
||||
|
||||
|
||||
.file "match.S"
|
||||
|
||||
.globl match_init, longest_match
|
||||
|
||||
.text
|
||||
|
||||
/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
|
||||
.cfi_sections .debug_frame
|
||||
|
||||
longest_match:
|
||||
|
||||
.cfi_startproc
|
||||
/* Save registers that the compiler may be using, and adjust %esp to */
|
||||
/* make room for our stack frame. */
|
||||
|
||||
pushl %ebp
|
||||
.cfi_def_cfa_offset 8
|
||||
.cfi_offset ebp, -8
|
||||
pushl %edi
|
||||
.cfi_def_cfa_offset 12
|
||||
pushl %esi
|
||||
.cfi_def_cfa_offset 16
|
||||
pushl %ebx
|
||||
.cfi_def_cfa_offset 20
|
||||
subl $LocalVarsSize, %esp
|
||||
.cfi_def_cfa_offset LocalVarsSize+20
|
||||
|
||||
/* Retrieve the function arguments. %ecx will hold cur_match */
|
||||
/* throughout the entire function. %edx will hold the pointer to the */
|
||||
/* deflate_state structure during the function's setup (before */
|
||||
/* entering the main loop). */
|
||||
|
||||
movl deflatestate(%esp), %edx
|
||||
movl curmatch(%esp), %ecx
|
||||
|
||||
/* uInt wmask = s->w_mask; */
|
||||
/* unsigned chain_length = s->max_chain_length; */
|
||||
/* if (s->prev_length >= s->good_match) { */
|
||||
/* chain_length >>= 2; */
|
||||
/* } */
|
||||
|
||||
movl dsPrevLen(%edx), %eax
|
||||
movl dsGoodMatch(%edx), %ebx
|
||||
cmpl %ebx, %eax
|
||||
movl dsWMask(%edx), %eax
|
||||
movl dsMaxChainLen(%edx), %ebx
|
||||
jl LastMatchGood
|
||||
shrl $2, %ebx
|
||||
LastMatchGood:
|
||||
|
||||
/* chainlen is decremented once beforehand so that the function can */
|
||||
/* use the sign flag instead of the zero flag for the exit test. */
|
||||
/* It is then shifted into the high word, to make room for the wmask */
|
||||
/* value, which it will always accompany. */
|
||||
|
||||
decl %ebx
|
||||
shll $16, %ebx
|
||||
orl %eax, %ebx
|
||||
movl %ebx, chainlenwmask(%esp)
|
||||
|
||||
/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; */
|
||||
|
||||
movl dsNiceMatch(%edx), %eax
|
||||
movl dsLookahead(%edx), %ebx
|
||||
cmpl %eax, %ebx
|
||||
jl LookaheadLess
|
||||
movl %eax, %ebx
|
||||
LookaheadLess: movl %ebx, nicematch(%esp)
|
||||
|
||||
/* register Bytef *scan = s->window + s->strstart; */
|
||||
|
||||
movl dsWindow(%edx), %esi
|
||||
movl %esi, window(%esp)
|
||||
movl dsStrStart(%edx), %ebp
|
||||
lea (%esi,%ebp), %edi
|
||||
movl %edi, scan(%esp)
|
||||
|
||||
/* Determine how many bytes the scan ptr is off from being */
|
||||
/* dword-aligned. */
|
||||
|
||||
movl %edi, %eax
|
||||
negl %eax
|
||||
andl $3, %eax
|
||||
movl %eax, scanalign(%esp)
|
||||
|
||||
/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */
|
||||
/* s->strstart - (IPos)MAX_DIST(s) : NIL; */
|
||||
|
||||
movl dsWSize(%edx), %eax
|
||||
subl $MIN_LOOKAHEAD, %eax
|
||||
subl %eax, %ebp
|
||||
jg LimitPositive
|
||||
xorl %ebp, %ebp
|
||||
LimitPositive:
|
||||
|
||||
/* int best_len = s->prev_length; */
|
||||
|
||||
movl dsPrevLen(%edx), %eax
|
||||
movl %eax, bestlen(%esp)
|
||||
|
||||
/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
|
||||
|
||||
addl %eax, %esi
|
||||
movl %esi, windowbestlen(%esp)
|
||||
|
||||
/* register ush scan_start = *(ushf*)scan; */
|
||||
/* register ush scan_end = *(ushf*)(scan+best_len-1); */
|
||||
/* Posf *prev = s->prev; */
|
||||
|
||||
movzwl (%edi), %ebx
|
||||
movl %ebx, scanstart(%esp)
|
||||
movzwl -1(%edi,%eax), %ebx
|
||||
movl %ebx, scanend(%esp)
|
||||
movl dsPrev(%edx), %edi
|
||||
|
||||
/* Jump into the main loop. */
|
||||
|
||||
movl chainlenwmask(%esp), %edx
|
||||
jmp LoopEntry
|
||||
|
||||
.balign 16
|
||||
|
||||
/* do {
|
||||
* match = s->window + cur_match;
|
||||
* if (*(ushf*)(match+best_len-1) != scan_end ||
|
||||
* *(ushf*)match != scan_start) continue;
|
||||
* [...]
|
||||
* } while ((cur_match = prev[cur_match & wmask]) > limit
|
||||
* && --chain_length != 0);
|
||||
*
|
||||
* Here is the inner loop of the function. The function will spend the
|
||||
* majority of its time in this loop, and majority of that time will
|
||||
* be spent in the first ten instructions.
|
||||
*
|
||||
* Within this loop:
|
||||
* %ebx = scanend
|
||||
* %ecx = curmatch
|
||||
* %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
|
||||
* %esi = windowbestlen - i.e., (window + bestlen)
|
||||
* %edi = prev
|
||||
* %ebp = limit
|
||||
*/
|
||||
LookupLoop:
|
||||
andl %edx, %ecx
|
||||
movzwl (%edi,%ecx,2), %ecx
|
||||
cmpl %ebp, %ecx
|
||||
jbe LeaveNow
|
||||
subl $0x00010000, %edx
|
||||
js LeaveNow
|
||||
LoopEntry: movzwl -1(%esi,%ecx), %eax
|
||||
cmpl %ebx, %eax
|
||||
jnz LookupLoop
|
||||
movl window(%esp), %eax
|
||||
movzwl (%eax,%ecx), %eax
|
||||
cmpl scanstart(%esp), %eax
|
||||
jnz LookupLoop
|
||||
|
||||
/* Store the current value of chainlen. */
|
||||
|
||||
movl %edx, chainlenwmask(%esp)
|
||||
|
||||
/* Point %edi to the string under scrutiny, and %esi to the string we */
|
||||
/* are hoping to match it up with. In actuality, %esi and %edi are */
|
||||
/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */
|
||||
/* initialized to -(MAX_MATCH_8 - scanalign). */
|
||||
|
||||
movl window(%esp), %esi
|
||||
movl scan(%esp), %edi
|
||||
addl %ecx, %esi
|
||||
movl scanalign(%esp), %eax
|
||||
movl $(-MAX_MATCH_8), %edx
|
||||
lea MAX_MATCH_8(%edi,%eax), %edi
|
||||
lea MAX_MATCH_8(%esi,%eax), %esi
|
||||
|
||||
/* Test the strings for equality, 8 bytes at a time. At the end,
|
||||
* adjust %edx so that it is offset to the exact byte that mismatched.
|
||||
*
|
||||
* We already know at this point that the first three bytes of the
|
||||
* strings match each other, and they can be safely passed over before
|
||||
* starting the compare loop. So what this code does is skip over 0-3
|
||||
* bytes, as much as necessary in order to dword-align the %edi
|
||||
* pointer. (%esi will still be misaligned three times out of four.)
|
||||
*
|
||||
* It should be confessed that this loop usually does not represent
|
||||
* much of the total running time. Replacing it with a more
|
||||
* straightforward "rep cmpsb" would not drastically degrade
|
||||
* performance.
|
||||
*/
|
||||
LoopCmps:
|
||||
movl (%esi,%edx), %eax
|
||||
xorl (%edi,%edx), %eax
|
||||
jnz LeaveLoopCmps
|
||||
movl 4(%esi,%edx), %eax
|
||||
xorl 4(%edi,%edx), %eax
|
||||
jnz LeaveLoopCmps4
|
||||
addl $8, %edx
|
||||
jnz LoopCmps
|
||||
jmp LenMaximum
|
||||
LeaveLoopCmps4: addl $4, %edx
|
||||
LeaveLoopCmps: testl $0x0000FFFF, %eax
|
||||
jnz LenLower
|
||||
addl $2, %edx
|
||||
shrl $16, %eax
|
||||
LenLower: subb $1, %al
|
||||
adcl $0, %edx
|
||||
|
||||
/* Calculate the length of the match. If it is longer than MAX_MATCH, */
|
||||
/* then automatically accept it as the best possible match and leave. */
|
||||
|
||||
lea (%edi,%edx), %eax
|
||||
movl scan(%esp), %edi
|
||||
subl %edi, %eax
|
||||
cmpl $MAX_MATCH, %eax
|
||||
jge LenMaximum
|
||||
|
||||
/* If the length of the match is not longer than the best match we */
|
||||
/* have so far, then forget it and return to the lookup loop. */
|
||||
|
||||
movl deflatestate(%esp), %edx
|
||||
movl bestlen(%esp), %ebx
|
||||
cmpl %ebx, %eax
|
||||
jg LongerMatch
|
||||
movl windowbestlen(%esp), %esi
|
||||
movl dsPrev(%edx), %edi
|
||||
movl scanend(%esp), %ebx
|
||||
movl chainlenwmask(%esp), %edx
|
||||
jmp LookupLoop
|
||||
|
||||
/* s->match_start = cur_match; */
|
||||
/* best_len = len; */
|
||||
/* if (len >= nice_match) break; */
|
||||
/* scan_end = *(ushf*)(scan+best_len-1); */
|
||||
|
||||
LongerMatch: movl nicematch(%esp), %ebx
|
||||
movl %eax, bestlen(%esp)
|
||||
movl %ecx, dsMatchStart(%edx)
|
||||
cmpl %ebx, %eax
|
||||
jge LeaveNow
|
||||
movl window(%esp), %esi
|
||||
addl %eax, %esi
|
||||
movl %esi, windowbestlen(%esp)
|
||||
movzwl -1(%edi,%eax), %ebx
|
||||
movl dsPrev(%edx), %edi
|
||||
movl %ebx, scanend(%esp)
|
||||
movl chainlenwmask(%esp), %edx
|
||||
jmp LookupLoop
|
||||
|
||||
/* Accept the current string, with the maximum possible length. */
|
||||
|
||||
LenMaximum: movl deflatestate(%esp), %edx
|
||||
movl $MAX_MATCH, bestlen(%esp)
|
||||
movl %ecx, dsMatchStart(%edx)
|
||||
|
||||
/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */
|
||||
/* return s->lookahead; */
|
||||
|
||||
LeaveNow:
|
||||
movl deflatestate(%esp), %edx
|
||||
movl bestlen(%esp), %ebx
|
||||
movl dsLookahead(%edx), %eax
|
||||
cmpl %eax, %ebx
|
||||
jg LookaheadRet
|
||||
movl %ebx, %eax
|
||||
LookaheadRet:
|
||||
|
||||
/* Restore the stack and return from whence we came. */
|
||||
|
||||
addl $LocalVarsSize, %esp
|
||||
.cfi_def_cfa_offset 20
|
||||
popl %ebx
|
||||
.cfi_def_cfa_offset 16
|
||||
popl %esi
|
||||
.cfi_def_cfa_offset 12
|
||||
popl %edi
|
||||
.cfi_def_cfa_offset 8
|
||||
popl %ebp
|
||||
.cfi_def_cfa_offset 4
|
||||
.cfi_endproc
|
||||
match_init: ret
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
blast: blast.c blast.h
|
||||
cc -DTEST -o blast blast.c
|
||||
|
||||
test: blast
|
||||
blast < test.pk | cmp - test.txt
|
||||
|
||||
clean:
|
||||
rm -f blast blast.o
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
Read blast.h for purpose and usage.
|
||||
|
||||
Mark Adler
|
||||
madler@alumni.caltech.edu
|
||||
|
|
@ -0,0 +1,446 @@
|
|||
/* blast.c
|
||||
* Copyright (C) 2003, 2012 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in blast.h
|
||||
* version 1.2, 24 Oct 2012
|
||||
*
|
||||
* blast.c decompresses data compressed by the PKWare Compression Library.
|
||||
* This function provides functionality similar to the explode() function of
|
||||
* the PKWare library, hence the name "blast".
|
||||
*
|
||||
* This decompressor is based on the excellent format description provided by
|
||||
* Ben Rudiak-Gould in comp.compression on August 13, 2001. Interestingly, the
|
||||
* example Ben provided in the post is incorrect. The distance 110001 should
|
||||
* instead be 111000. When corrected, the example byte stream becomes:
|
||||
*
|
||||
* 00 04 82 24 25 8f 80 7f
|
||||
*
|
||||
* which decompresses to "AIAIAIAIAIAIA" (without the quotes).
|
||||
*/
|
||||
|
||||
/*
|
||||
* Change history:
|
||||
*
|
||||
* 1.0 12 Feb 2003 - First version
|
||||
* 1.1 16 Feb 2003 - Fixed distance check for > 4 GB uncompressed data
|
||||
* 1.2 24 Oct 2012 - Add note about using binary mode in stdio
|
||||
* - Fix comparisons of differently signed integers
|
||||
*/
|
||||
|
||||
#include <setjmp.h> /* for setjmp(), longjmp(), and jmp_buf */
|
||||
#include "blast.h" /* prototype for blast() */
|
||||
|
||||
#define local static /* for local function definitions */
|
||||
#define MAXBITS 13 /* maximum code length */
|
||||
#define MAXWIN 4096 /* maximum window size */
|
||||
|
||||
/* input and output state */
|
||||
struct state {
|
||||
/* input state */
|
||||
blast_in infun; /* input function provided by user */
|
||||
void *inhow; /* opaque information passed to infun() */
|
||||
unsigned char *in; /* next input location */
|
||||
unsigned left; /* available input at in */
|
||||
int bitbuf; /* bit buffer */
|
||||
int bitcnt; /* number of bits in bit buffer */
|
||||
|
||||
/* input limit error return state for bits() and decode() */
|
||||
jmp_buf env;
|
||||
|
||||
/* output state */
|
||||
blast_out outfun; /* output function provided by user */
|
||||
void *outhow; /* opaque information passed to outfun() */
|
||||
unsigned next; /* index of next write location in out[] */
|
||||
int first; /* true to check distances (for first 4K) */
|
||||
unsigned char out[MAXWIN]; /* output buffer and sliding window */
|
||||
};
|
||||
|
||||
/*
|
||||
* Return need bits from the input stream. This always leaves less than
|
||||
* eight bits in the buffer. bits() works properly for need == 0.
|
||||
*
|
||||
* Format notes:
|
||||
*
|
||||
* - Bits are stored in bytes from the least significant bit to the most
|
||||
* significant bit. Therefore bits are dropped from the bottom of the bit
|
||||
* buffer, using shift right, and new bytes are appended to the top of the
|
||||
* bit buffer, using shift left.
|
||||
*/
|
||||
local int bits(struct state *s, int need)
|
||||
{
|
||||
int val; /* bit accumulator */
|
||||
|
||||
/* load at least need bits into val */
|
||||
val = s->bitbuf;
|
||||
while (s->bitcnt < need) {
|
||||
if (s->left == 0) {
|
||||
s->left = s->infun(s->inhow, &(s->in));
|
||||
if (s->left == 0) longjmp(s->env, 1); /* out of input */
|
||||
}
|
||||
val |= (int)(*(s->in)++) << s->bitcnt; /* load eight bits */
|
||||
s->left--;
|
||||
s->bitcnt += 8;
|
||||
}
|
||||
|
||||
/* drop need bits and update buffer, always zero to seven bits left */
|
||||
s->bitbuf = val >> need;
|
||||
s->bitcnt -= need;
|
||||
|
||||
/* return need bits, zeroing the bits above that */
|
||||
return val & ((1 << need) - 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Huffman code decoding tables. count[1..MAXBITS] is the number of symbols of
|
||||
* each length, which for a canonical code are stepped through in order.
|
||||
* symbol[] are the symbol values in canonical order, where the number of
|
||||
* entries is the sum of the counts in count[]. The decoding process can be
|
||||
* seen in the function decode() below.
|
||||
*/
|
||||
struct huffman {
|
||||
short *count; /* number of symbols of each length */
|
||||
short *symbol; /* canonically ordered symbols */
|
||||
};
|
||||
|
||||
/*
|
||||
* Decode a code from the stream s using huffman table h. Return the symbol or
|
||||
* a negative value if there is an error. If all of the lengths are zero, i.e.
|
||||
* an empty code, or if the code is incomplete and an invalid code is received,
|
||||
* then -9 is returned after reading MAXBITS bits.
|
||||
*
|
||||
* Format notes:
|
||||
*
|
||||
* - The codes as stored in the compressed data are bit-reversed relative to
|
||||
* a simple integer ordering of codes of the same lengths. Hence below the
|
||||
* bits are pulled from the compressed data one at a time and used to
|
||||
* build the code value reversed from what is in the stream in order to
|
||||
* permit simple integer comparisons for decoding.
|
||||
*
|
||||
* - The first code for the shortest length is all ones. Subsequent codes of
|
||||
* the same length are simply integer decrements of the previous code. When
|
||||
* moving up a length, a one bit is appended to the code. For a complete
|
||||
* code, the last code of the longest length will be all zeros. To support
|
||||
* this ordering, the bits pulled during decoding are inverted to apply the
|
||||
* more "natural" ordering starting with all zeros and incrementing.
|
||||
*/
|
||||
local int decode(struct state *s, struct huffman *h)
|
||||
{
|
||||
int len; /* current number of bits in code */
|
||||
int code; /* len bits being decoded */
|
||||
int first; /* first code of length len */
|
||||
int count; /* number of codes of length len */
|
||||
int index; /* index of first code of length len in symbol table */
|
||||
int bitbuf; /* bits from stream */
|
||||
int left; /* bits left in next or left to process */
|
||||
short *next; /* next number of codes */
|
||||
|
||||
bitbuf = s->bitbuf;
|
||||
left = s->bitcnt;
|
||||
code = first = index = 0;
|
||||
len = 1;
|
||||
next = h->count + 1;
|
||||
while (1) {
|
||||
while (left--) {
|
||||
code |= (bitbuf & 1) ^ 1; /* invert code */
|
||||
bitbuf >>= 1;
|
||||
count = *next++;
|
||||
if (code < first + count) { /* if length len, return symbol */
|
||||
s->bitbuf = bitbuf;
|
||||
s->bitcnt = (s->bitcnt - len) & 7;
|
||||
return h->symbol[index + (code - first)];
|
||||
}
|
||||
index += count; /* else update for next length */
|
||||
first += count;
|
||||
first <<= 1;
|
||||
code <<= 1;
|
||||
len++;
|
||||
}
|
||||
left = (MAXBITS+1) - len;
|
||||
if (left == 0) break;
|
||||
if (s->left == 0) {
|
||||
s->left = s->infun(s->inhow, &(s->in));
|
||||
if (s->left == 0) longjmp(s->env, 1); /* out of input */
|
||||
}
|
||||
bitbuf = *(s->in)++;
|
||||
s->left--;
|
||||
if (left > 8) left = 8;
|
||||
}
|
||||
return -9; /* ran out of codes */
|
||||
}
|
||||
|
||||
/*
|
||||
* Given a list of repeated code lengths rep[0..n-1], where each byte is a
|
||||
* count (high four bits + 1) and a code length (low four bits), generate the
|
||||
* list of code lengths. This compaction reduces the size of the object code.
|
||||
* Then given the list of code lengths length[0..n-1] representing a canonical
|
||||
* Huffman code for n symbols, construct the tables required to decode those
|
||||
* codes. Those tables are the number of codes of each length, and the symbols
|
||||
* sorted by length, retaining their original order within each length. The
|
||||
* return value is zero for a complete code set, negative for an over-
|
||||
* subscribed code set, and positive for an incomplete code set. The tables
|
||||
* can be used if the return value is zero or positive, but they cannot be used
|
||||
* if the return value is negative. If the return value is zero, it is not
|
||||
* possible for decode() using that table to return an error--any stream of
|
||||
* enough bits will resolve to a symbol. If the return value is positive, then
|
||||
* it is possible for decode() using that table to return an error for received
|
||||
* codes past the end of the incomplete lengths.
|
||||
*/
|
||||
local int construct(struct huffman *h, const unsigned char *rep, int n)
|
||||
{
|
||||
int symbol; /* current symbol when stepping through length[] */
|
||||
int len; /* current length when stepping through h->count[] */
|
||||
int left; /* number of possible codes left of current length */
|
||||
short offs[MAXBITS+1]; /* offsets in symbol table for each length */
|
||||
short length[256]; /* code lengths */
|
||||
|
||||
/* convert compact repeat counts into symbol bit length list */
|
||||
symbol = 0;
|
||||
do {
|
||||
len = *rep++;
|
||||
left = (len >> 4) + 1;
|
||||
len &= 15;
|
||||
do {
|
||||
length[symbol++] = len;
|
||||
} while (--left);
|
||||
} while (--n);
|
||||
n = symbol;
|
||||
|
||||
/* count number of codes of each length */
|
||||
for (len = 0; len <= MAXBITS; len++)
|
||||
h->count[len] = 0;
|
||||
for (symbol = 0; symbol < n; symbol++)
|
||||
(h->count[length[symbol]])++; /* assumes lengths are within bounds */
|
||||
if (h->count[0] == n) /* no codes! */
|
||||
return 0; /* complete, but decode() will fail */
|
||||
|
||||
/* check for an over-subscribed or incomplete set of lengths */
|
||||
left = 1; /* one possible code of zero length */
|
||||
for (len = 1; len <= MAXBITS; len++) {
|
||||
left <<= 1; /* one more bit, double codes left */
|
||||
left -= h->count[len]; /* deduct count from possible codes */
|
||||
if (left < 0) return left; /* over-subscribed--return negative */
|
||||
} /* left > 0 means incomplete */
|
||||
|
||||
/* generate offsets into symbol table for each length for sorting */
|
||||
offs[1] = 0;
|
||||
for (len = 1; len < MAXBITS; len++)
|
||||
offs[len + 1] = offs[len] + h->count[len];
|
||||
|
||||
/*
|
||||
* put symbols in table sorted by length, by symbol order within each
|
||||
* length
|
||||
*/
|
||||
for (symbol = 0; symbol < n; symbol++)
|
||||
if (length[symbol] != 0)
|
||||
h->symbol[offs[length[symbol]]++] = symbol;
|
||||
|
||||
/* return zero for complete set, positive for incomplete set */
|
||||
return left;
|
||||
}
|
||||
|
||||
/*
|
||||
* Decode PKWare Compression Library stream.
|
||||
*
|
||||
* Format notes:
|
||||
*
|
||||
* - First byte is 0 if literals are uncoded or 1 if they are coded. Second
|
||||
* byte is 4, 5, or 6 for the number of extra bits in the distance code.
|
||||
* This is the base-2 logarithm of the dictionary size minus six.
|
||||
*
|
||||
* - Compressed data is a combination of literals and length/distance pairs
|
||||
* terminated by an end code. Literals are either Huffman coded or
|
||||
* uncoded bytes. A length/distance pair is a coded length followed by a
|
||||
* coded distance to represent a string that occurs earlier in the
|
||||
* uncompressed data that occurs again at the current location.
|
||||
*
|
||||
* - A bit preceding a literal or length/distance pair indicates which comes
|
||||
* next, 0 for literals, 1 for length/distance.
|
||||
*
|
||||
* - If literals are uncoded, then the next eight bits are the literal, in the
|
||||
* normal bit order in th stream, i.e. no bit-reversal is needed. Similarly,
|
||||
* no bit reversal is needed for either the length extra bits or the distance
|
||||
* extra bits.
|
||||
*
|
||||
* - Literal bytes are simply written to the output. A length/distance pair is
|
||||
* an instruction to copy previously uncompressed bytes to the output. The
|
||||
* copy is from distance bytes back in the output stream, copying for length
|
||||
* bytes.
|
||||
*
|
||||
* - Distances pointing before the beginning of the output data are not
|
||||
* permitted.
|
||||
*
|
||||
* - Overlapped copies, where the length is greater than the distance, are
|
||||
* allowed and common. For example, a distance of one and a length of 518
|
||||
* simply copies the last byte 518 times. A distance of four and a length of
|
||||
* twelve copies the last four bytes three times. A simple forward copy
|
||||
* ignoring whether the length is greater than the distance or not implements
|
||||
* this correctly.
|
||||
*/
|
||||
local int decomp(struct state *s)
|
||||
{
|
||||
int lit; /* true if literals are coded */
|
||||
int dict; /* log2(dictionary size) - 6 */
|
||||
int symbol; /* decoded symbol, extra bits for distance */
|
||||
int len; /* length for copy */
|
||||
unsigned dist; /* distance for copy */
|
||||
int copy; /* copy counter */
|
||||
unsigned char *from, *to; /* copy pointers */
|
||||
static int virgin = 1; /* build tables once */
|
||||
static short litcnt[MAXBITS+1], litsym[256]; /* litcode memory */
|
||||
static short lencnt[MAXBITS+1], lensym[16]; /* lencode memory */
|
||||
static short distcnt[MAXBITS+1], distsym[64]; /* distcode memory */
|
||||
static struct huffman litcode = {litcnt, litsym}; /* length code */
|
||||
static struct huffman lencode = {lencnt, lensym}; /* length code */
|
||||
static struct huffman distcode = {distcnt, distsym};/* distance code */
|
||||
/* bit lengths of literal codes */
|
||||
static const unsigned char litlen[] = {
|
||||
11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
|
||||
9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
|
||||
7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
|
||||
8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
|
||||
44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
|
||||
44, 173};
|
||||
/* bit lengths of length codes 0..15 */
|
||||
static const unsigned char lenlen[] = {2, 35, 36, 53, 38, 23};
|
||||
/* bit lengths of distance codes 0..63 */
|
||||
static const unsigned char distlen[] = {2, 20, 53, 230, 247, 151, 248};
|
||||
static const short base[16] = { /* base for length codes */
|
||||
3, 2, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 136, 264};
|
||||
static const char extra[16] = { /* extra bits for length codes */
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8};
|
||||
|
||||
/* set up decoding tables (once--might not be thread-safe) */
|
||||
if (virgin) {
|
||||
construct(&litcode, litlen, sizeof(litlen));
|
||||
construct(&lencode, lenlen, sizeof(lenlen));
|
||||
construct(&distcode, distlen, sizeof(distlen));
|
||||
virgin = 0;
|
||||
}
|
||||
|
||||
/* read header */
|
||||
lit = bits(s, 8);
|
||||
if (lit > 1) return -1;
|
||||
dict = bits(s, 8);
|
||||
if (dict < 4 || dict > 6) return -2;
|
||||
|
||||
/* decode literals and length/distance pairs */
|
||||
do {
|
||||
if (bits(s, 1)) {
|
||||
/* get length */
|
||||
symbol = decode(s, &lencode);
|
||||
len = base[symbol] + bits(s, extra[symbol]);
|
||||
if (len == 519) break; /* end code */
|
||||
|
||||
/* get distance */
|
||||
symbol = len == 2 ? 2 : dict;
|
||||
dist = decode(s, &distcode) << symbol;
|
||||
dist += bits(s, symbol);
|
||||
dist++;
|
||||
if (s->first && dist > s->next)
|
||||
return -3; /* distance too far back */
|
||||
|
||||
/* copy length bytes from distance bytes back */
|
||||
do {
|
||||
to = s->out + s->next;
|
||||
from = to - dist;
|
||||
copy = MAXWIN;
|
||||
if (s->next < dist) {
|
||||
from += copy;
|
||||
copy = dist;
|
||||
}
|
||||
copy -= s->next;
|
||||
if (copy > len) copy = len;
|
||||
len -= copy;
|
||||
s->next += copy;
|
||||
do {
|
||||
*to++ = *from++;
|
||||
} while (--copy);
|
||||
if (s->next == MAXWIN) {
|
||||
if (s->outfun(s->outhow, s->out, s->next)) return 1;
|
||||
s->next = 0;
|
||||
s->first = 0;
|
||||
}
|
||||
} while (len != 0);
|
||||
}
|
||||
else {
|
||||
/* get literal and write it */
|
||||
symbol = lit ? decode(s, &litcode) : bits(s, 8);
|
||||
s->out[s->next++] = symbol;
|
||||
if (s->next == MAXWIN) {
|
||||
if (s->outfun(s->outhow, s->out, s->next)) return 1;
|
||||
s->next = 0;
|
||||
s->first = 0;
|
||||
}
|
||||
}
|
||||
} while (1);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* See comments in blast.h */
|
||||
int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow)
|
||||
{
|
||||
struct state s; /* input/output state */
|
||||
int err; /* return value */
|
||||
|
||||
/* initialize input state */
|
||||
s.infun = infun;
|
||||
s.inhow = inhow;
|
||||
s.left = 0;
|
||||
s.bitbuf = 0;
|
||||
s.bitcnt = 0;
|
||||
|
||||
/* initialize output state */
|
||||
s.outfun = outfun;
|
||||
s.outhow = outhow;
|
||||
s.next = 0;
|
||||
s.first = 1;
|
||||
|
||||
/* return if bits() or decode() tries to read past available input */
|
||||
if (setjmp(s.env) != 0) /* if came back here via longjmp(), */
|
||||
err = 2; /* then skip decomp(), return error */
|
||||
else
|
||||
err = decomp(&s); /* decompress */
|
||||
|
||||
/* write any leftover output and update the error code if needed */
|
||||
if (err != 1 && s.next && s.outfun(s.outhow, s.out, s.next) && err == 0)
|
||||
err = 1;
|
||||
return err;
|
||||
}
|
||||
|
||||
#ifdef TEST
|
||||
/* Example of how to use blast() */
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#define CHUNK 16384
|
||||
|
||||
local unsigned inf(void *how, unsigned char **buf)
|
||||
{
|
||||
static unsigned char hold[CHUNK];
|
||||
|
||||
*buf = hold;
|
||||
return fread(hold, 1, CHUNK, (FILE *)how);
|
||||
}
|
||||
|
||||
local int outf(void *how, unsigned char *buf, unsigned len)
|
||||
{
|
||||
return fwrite(buf, 1, len, (FILE *)how) != len;
|
||||
}
|
||||
|
||||
/* Decompress a PKWare Compression Library stream from stdin to stdout */
|
||||
int main(void)
|
||||
{
|
||||
int ret, n;
|
||||
|
||||
/* decompress to stdout */
|
||||
ret = blast(inf, stdin, outf, stdout);
|
||||
if (ret != 0) fprintf(stderr, "blast error: %d\n", ret);
|
||||
|
||||
/* see if there are any leftover bytes */
|
||||
n = 0;
|
||||
while (getchar() != EOF) n++;
|
||||
if (n) fprintf(stderr, "blast warning: %d unused bytes of input\n", n);
|
||||
|
||||
/* return blast() error code */
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
/* blast.h -- interface for blast.c
|
||||
Copyright (C) 2003, 2012 Mark Adler
|
||||
version 1.2, 24 Oct 2012
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the author be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
|
||||
Mark Adler madler@alumni.caltech.edu
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* blast() decompresses the PKWare Data Compression Library (DCL) compressed
|
||||
* format. It provides the same functionality as the explode() function in
|
||||
* that library. (Note: PKWare overused the "implode" verb, and the format
|
||||
* used by their library implode() function is completely different and
|
||||
* incompatible with the implode compression method supported by PKZIP.)
|
||||
*
|
||||
* The binary mode for stdio functions should be used to assure that the
|
||||
* compressed data is not corrupted when read or written. For example:
|
||||
* fopen(..., "rb") and fopen(..., "wb").
|
||||
*/
|
||||
|
||||
|
||||
typedef unsigned (*blast_in)(void *how, unsigned char **buf);
|
||||
typedef int (*blast_out)(void *how, unsigned char *buf, unsigned len);
|
||||
/* Definitions for input/output functions passed to blast(). See below for
|
||||
* what the provided functions need to do.
|
||||
*/
|
||||
|
||||
|
||||
int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow);
|
||||
/* Decompress input to output using the provided infun() and outfun() calls.
|
||||
* On success, the return value of blast() is zero. If there is an error in
|
||||
* the source data, i.e. it is not in the proper format, then a negative value
|
||||
* is returned. If there is not enough input available or there is not enough
|
||||
* output space, then a positive error is returned.
|
||||
*
|
||||
* The input function is invoked: len = infun(how, &buf), where buf is set by
|
||||
* infun() to point to the input buffer, and infun() returns the number of
|
||||
* available bytes there. If infun() returns zero, then blast() returns with
|
||||
* an input error. (blast() only asks for input if it needs it.) inhow is for
|
||||
* use by the application to pass an input descriptor to infun(), if desired.
|
||||
*
|
||||
* The output function is invoked: err = outfun(how, buf, len), where the bytes
|
||||
* to be written are buf[0..len-1]. If err is not zero, then blast() returns
|
||||
* with an output error. outfun() is always called with len <= 4096. outhow
|
||||
* is for use by the application to pass an output descriptor to outfun(), if
|
||||
* desired.
|
||||
*
|
||||
* The return codes are:
|
||||
*
|
||||
* 2: ran out of input before completing decompression
|
||||
* 1: output error before completing decompression
|
||||
* 0: successful decompression
|
||||
* -1: literal flag not zero or one
|
||||
* -2: dictionary size not in 4..6
|
||||
* -3: distance is too far back
|
||||
*
|
||||
* At the bottom of blast.c is an example program that uses blast() that can be
|
||||
* compiled to produce a command-line decompression filter by defining TEST.
|
||||
*/
|
||||
Binary file not shown.
|
|
@ -0,0 +1 @@
|
|||
AIAIAIAIAIAIA
|
||||
|
|
@ -0,0 +1,557 @@
|
|||
{*******************************************************}
|
||||
{ }
|
||||
{ Borland Delphi Supplemental Components }
|
||||
{ ZLIB Data Compression Interface Unit }
|
||||
{ }
|
||||
{ Copyright (c) 1997,99 Borland Corporation }
|
||||
{ }
|
||||
{*******************************************************}
|
||||
|
||||
{ Updated for zlib 1.2.x by Cosmin Truta <cosmint@cs.ubbcluj.ro> }
|
||||
|
||||
unit ZLib;
|
||||
|
||||
interface
|
||||
|
||||
uses SysUtils, Classes;
|
||||
|
||||
type
|
||||
TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
|
||||
TFree = procedure (AppData, Block: Pointer); cdecl;
|
||||
|
||||
// Internal structure. Ignore.
|
||||
TZStreamRec = packed record
|
||||
next_in: PChar; // next input byte
|
||||
avail_in: Integer; // number of bytes available at next_in
|
||||
total_in: Longint; // total nb of input bytes read so far
|
||||
|
||||
next_out: PChar; // next output byte should be put here
|
||||
avail_out: Integer; // remaining free space at next_out
|
||||
total_out: Longint; // total nb of bytes output so far
|
||||
|
||||
msg: PChar; // last error message, NULL if no error
|
||||
internal: Pointer; // not visible by applications
|
||||
|
||||
zalloc: TAlloc; // used to allocate the internal state
|
||||
zfree: TFree; // used to free the internal state
|
||||
AppData: Pointer; // private data object passed to zalloc and zfree
|
||||
|
||||
data_type: Integer; // best guess about the data type: ascii or binary
|
||||
adler: Longint; // adler32 value of the uncompressed data
|
||||
reserved: Longint; // reserved for future use
|
||||
end;
|
||||
|
||||
// Abstract ancestor class
|
||||
TCustomZlibStream = class(TStream)
|
||||
private
|
||||
FStrm: TStream;
|
||||
FStrmPos: Integer;
|
||||
FOnProgress: TNotifyEvent;
|
||||
FZRec: TZStreamRec;
|
||||
FBuffer: array [Word] of Char;
|
||||
protected
|
||||
procedure Progress(Sender: TObject); dynamic;
|
||||
property OnProgress: TNotifyEvent read FOnProgress write FOnProgress;
|
||||
constructor Create(Strm: TStream);
|
||||
end;
|
||||
|
||||
{ TCompressionStream compresses data on the fly as data is written to it, and
|
||||
stores the compressed data to another stream.
|
||||
|
||||
TCompressionStream is write-only and strictly sequential. Reading from the
|
||||
stream will raise an exception. Using Seek to move the stream pointer
|
||||
will raise an exception.
|
||||
|
||||
Output data is cached internally, written to the output stream only when
|
||||
the internal output buffer is full. All pending output data is flushed
|
||||
when the stream is destroyed.
|
||||
|
||||
The Position property returns the number of uncompressed bytes of
|
||||
data that have been written to the stream so far.
|
||||
|
||||
CompressionRate returns the on-the-fly percentage by which the original
|
||||
data has been compressed: (1 - (CompressedBytes / UncompressedBytes)) * 100
|
||||
If raw data size = 100 and compressed data size = 25, the CompressionRate
|
||||
is 75%
|
||||
|
||||
The OnProgress event is called each time the output buffer is filled and
|
||||
written to the output stream. This is useful for updating a progress
|
||||
indicator when you are writing a large chunk of data to the compression
|
||||
stream in a single call.}
|
||||
|
||||
|
||||
TCompressionLevel = (clNone, clFastest, clDefault, clMax);
|
||||
|
||||
TCompressionStream = class(TCustomZlibStream)
|
||||
private
|
||||
function GetCompressionRate: Single;
|
||||
public
|
||||
constructor Create(CompressionLevel: TCompressionLevel; Dest: TStream);
|
||||
destructor Destroy; override;
|
||||
function Read(var Buffer; Count: Longint): Longint; override;
|
||||
function Write(const Buffer; Count: Longint): Longint; override;
|
||||
function Seek(Offset: Longint; Origin: Word): Longint; override;
|
||||
property CompressionRate: Single read GetCompressionRate;
|
||||
property OnProgress;
|
||||
end;
|
||||
|
||||
{ TDecompressionStream decompresses data on the fly as data is read from it.
|
||||
|
||||
Compressed data comes from a separate source stream. TDecompressionStream
|
||||
is read-only and unidirectional; you can seek forward in the stream, but not
|
||||
backwards. The special case of setting the stream position to zero is
|
||||
allowed. Seeking forward decompresses data until the requested position in
|
||||
the uncompressed data has been reached. Seeking backwards, seeking relative
|
||||
to the end of the stream, requesting the size of the stream, and writing to
|
||||
the stream will raise an exception.
|
||||
|
||||
The Position property returns the number of bytes of uncompressed data that
|
||||
have been read from the stream so far.
|
||||
|
||||
The OnProgress event is called each time the internal input buffer of
|
||||
compressed data is exhausted and the next block is read from the input stream.
|
||||
This is useful for updating a progress indicator when you are reading a
|
||||
large chunk of data from the decompression stream in a single call.}
|
||||
|
||||
TDecompressionStream = class(TCustomZlibStream)
|
||||
public
|
||||
constructor Create(Source: TStream);
|
||||
destructor Destroy; override;
|
||||
function Read(var Buffer; Count: Longint): Longint; override;
|
||||
function Write(const Buffer; Count: Longint): Longint; override;
|
||||
function Seek(Offset: Longint; Origin: Word): Longint; override;
|
||||
property OnProgress;
|
||||
end;
|
||||
|
||||
|
||||
|
||||
{ CompressBuf compresses data, buffer to buffer, in one call.
|
||||
In: InBuf = ptr to compressed data
|
||||
InBytes = number of bytes in InBuf
|
||||
Out: OutBuf = ptr to newly allocated buffer containing decompressed data
|
||||
OutBytes = number of bytes in OutBuf }
|
||||
procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
|
||||
out OutBuf: Pointer; out OutBytes: Integer);
|
||||
|
||||
|
||||
{ DecompressBuf decompresses data, buffer to buffer, in one call.
|
||||
In: InBuf = ptr to compressed data
|
||||
InBytes = number of bytes in InBuf
|
||||
OutEstimate = zero, or est. size of the decompressed data
|
||||
Out: OutBuf = ptr to newly allocated buffer containing decompressed data
|
||||
OutBytes = number of bytes in OutBuf }
|
||||
procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
|
||||
OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
|
||||
|
||||
{ DecompressToUserBuf decompresses data, buffer to buffer, in one call.
|
||||
In: InBuf = ptr to compressed data
|
||||
InBytes = number of bytes in InBuf
|
||||
Out: OutBuf = ptr to user-allocated buffer to contain decompressed data
|
||||
BufSize = number of bytes in OutBuf }
|
||||
procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
|
||||
const OutBuf: Pointer; BufSize: Integer);
|
||||
|
||||
const
|
||||
zlib_version = '1.2.8';
|
||||
|
||||
type
|
||||
EZlibError = class(Exception);
|
||||
ECompressionError = class(EZlibError);
|
||||
EDecompressionError = class(EZlibError);
|
||||
|
||||
implementation
|
||||
|
||||
uses ZLibConst;
|
||||
|
||||
const
|
||||
Z_NO_FLUSH = 0;
|
||||
Z_PARTIAL_FLUSH = 1;
|
||||
Z_SYNC_FLUSH = 2;
|
||||
Z_FULL_FLUSH = 3;
|
||||
Z_FINISH = 4;
|
||||
|
||||
Z_OK = 0;
|
||||
Z_STREAM_END = 1;
|
||||
Z_NEED_DICT = 2;
|
||||
Z_ERRNO = (-1);
|
||||
Z_STREAM_ERROR = (-2);
|
||||
Z_DATA_ERROR = (-3);
|
||||
Z_MEM_ERROR = (-4);
|
||||
Z_BUF_ERROR = (-5);
|
||||
Z_VERSION_ERROR = (-6);
|
||||
|
||||
Z_NO_COMPRESSION = 0;
|
||||
Z_BEST_SPEED = 1;
|
||||
Z_BEST_COMPRESSION = 9;
|
||||
Z_DEFAULT_COMPRESSION = (-1);
|
||||
|
||||
Z_FILTERED = 1;
|
||||
Z_HUFFMAN_ONLY = 2;
|
||||
Z_RLE = 3;
|
||||
Z_DEFAULT_STRATEGY = 0;
|
||||
|
||||
Z_BINARY = 0;
|
||||
Z_ASCII = 1;
|
||||
Z_UNKNOWN = 2;
|
||||
|
||||
Z_DEFLATED = 8;
|
||||
|
||||
|
||||
{$L adler32.obj}
|
||||
{$L compress.obj}
|
||||
{$L crc32.obj}
|
||||
{$L deflate.obj}
|
||||
{$L infback.obj}
|
||||
{$L inffast.obj}
|
||||
{$L inflate.obj}
|
||||
{$L inftrees.obj}
|
||||
{$L trees.obj}
|
||||
{$L uncompr.obj}
|
||||
{$L zutil.obj}
|
||||
|
||||
procedure adler32; external;
|
||||
procedure compressBound; external;
|
||||
procedure crc32; external;
|
||||
procedure deflateInit2_; external;
|
||||
procedure deflateParams; external;
|
||||
|
||||
function _malloc(Size: Integer): Pointer; cdecl;
|
||||
begin
|
||||
Result := AllocMem(Size);
|
||||
end;
|
||||
|
||||
procedure _free(Block: Pointer); cdecl;
|
||||
begin
|
||||
FreeMem(Block);
|
||||
end;
|
||||
|
||||
procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
|
||||
begin
|
||||
FillChar(P^, count, B);
|
||||
end;
|
||||
|
||||
procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
|
||||
begin
|
||||
Move(source^, dest^, count);
|
||||
end;
|
||||
|
||||
|
||||
|
||||
// deflate compresses data
|
||||
function deflateInit_(var strm: TZStreamRec; level: Integer; version: PChar;
|
||||
recsize: Integer): Integer; external;
|
||||
function deflate(var strm: TZStreamRec; flush: Integer): Integer; external;
|
||||
function deflateEnd(var strm: TZStreamRec): Integer; external;
|
||||
|
||||
// inflate decompresses data
|
||||
function inflateInit_(var strm: TZStreamRec; version: PChar;
|
||||
recsize: Integer): Integer; external;
|
||||
function inflate(var strm: TZStreamRec; flush: Integer): Integer; external;
|
||||
function inflateEnd(var strm: TZStreamRec): Integer; external;
|
||||
function inflateReset(var strm: TZStreamRec): Integer; external;
|
||||
|
||||
|
||||
function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
|
||||
begin
|
||||
// GetMem(Result, Items*Size);
|
||||
Result := AllocMem(Items * Size);
|
||||
end;
|
||||
|
||||
procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
|
||||
begin
|
||||
FreeMem(Block);
|
||||
end;
|
||||
|
||||
{function zlibCheck(code: Integer): Integer;
|
||||
begin
|
||||
Result := code;
|
||||
if code < 0 then
|
||||
raise EZlibError.Create('error'); //!!
|
||||
end;}
|
||||
|
||||
function CCheck(code: Integer): Integer;
|
||||
begin
|
||||
Result := code;
|
||||
if code < 0 then
|
||||
raise ECompressionError.Create('error'); //!!
|
||||
end;
|
||||
|
||||
function DCheck(code: Integer): Integer;
|
||||
begin
|
||||
Result := code;
|
||||
if code < 0 then
|
||||
raise EDecompressionError.Create('error'); //!!
|
||||
end;
|
||||
|
||||
procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
|
||||
out OutBuf: Pointer; out OutBytes: Integer);
|
||||
var
|
||||
strm: TZStreamRec;
|
||||
P: Pointer;
|
||||
begin
|
||||
FillChar(strm, sizeof(strm), 0);
|
||||
strm.zalloc := zlibAllocMem;
|
||||
strm.zfree := zlibFreeMem;
|
||||
OutBytes := ((InBytes + (InBytes div 10) + 12) + 255) and not 255;
|
||||
GetMem(OutBuf, OutBytes);
|
||||
try
|
||||
strm.next_in := InBuf;
|
||||
strm.avail_in := InBytes;
|
||||
strm.next_out := OutBuf;
|
||||
strm.avail_out := OutBytes;
|
||||
CCheck(deflateInit_(strm, Z_BEST_COMPRESSION, zlib_version, sizeof(strm)));
|
||||
try
|
||||
while CCheck(deflate(strm, Z_FINISH)) <> Z_STREAM_END do
|
||||
begin
|
||||
P := OutBuf;
|
||||
Inc(OutBytes, 256);
|
||||
ReallocMem(OutBuf, OutBytes);
|
||||
strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
|
||||
strm.avail_out := 256;
|
||||
end;
|
||||
finally
|
||||
CCheck(deflateEnd(strm));
|
||||
end;
|
||||
ReallocMem(OutBuf, strm.total_out);
|
||||
OutBytes := strm.total_out;
|
||||
except
|
||||
FreeMem(OutBuf);
|
||||
raise
|
||||
end;
|
||||
end;
|
||||
|
||||
|
||||
procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
|
||||
OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
|
||||
var
|
||||
strm: TZStreamRec;
|
||||
P: Pointer;
|
||||
BufInc: Integer;
|
||||
begin
|
||||
FillChar(strm, sizeof(strm), 0);
|
||||
strm.zalloc := zlibAllocMem;
|
||||
strm.zfree := zlibFreeMem;
|
||||
BufInc := (InBytes + 255) and not 255;
|
||||
if OutEstimate = 0 then
|
||||
OutBytes := BufInc
|
||||
else
|
||||
OutBytes := OutEstimate;
|
||||
GetMem(OutBuf, OutBytes);
|
||||
try
|
||||
strm.next_in := InBuf;
|
||||
strm.avail_in := InBytes;
|
||||
strm.next_out := OutBuf;
|
||||
strm.avail_out := OutBytes;
|
||||
DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
|
||||
try
|
||||
while DCheck(inflate(strm, Z_NO_FLUSH)) <> Z_STREAM_END do
|
||||
begin
|
||||
P := OutBuf;
|
||||
Inc(OutBytes, BufInc);
|
||||
ReallocMem(OutBuf, OutBytes);
|
||||
strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
|
||||
strm.avail_out := BufInc;
|
||||
end;
|
||||
finally
|
||||
DCheck(inflateEnd(strm));
|
||||
end;
|
||||
ReallocMem(OutBuf, strm.total_out);
|
||||
OutBytes := strm.total_out;
|
||||
except
|
||||
FreeMem(OutBuf);
|
||||
raise
|
||||
end;
|
||||
end;
|
||||
|
||||
procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
|
||||
const OutBuf: Pointer; BufSize: Integer);
|
||||
var
|
||||
strm: TZStreamRec;
|
||||
begin
|
||||
FillChar(strm, sizeof(strm), 0);
|
||||
strm.zalloc := zlibAllocMem;
|
||||
strm.zfree := zlibFreeMem;
|
||||
strm.next_in := InBuf;
|
||||
strm.avail_in := InBytes;
|
||||
strm.next_out := OutBuf;
|
||||
strm.avail_out := BufSize;
|
||||
DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
|
||||
try
|
||||
if DCheck(inflate(strm, Z_FINISH)) <> Z_STREAM_END then
|
||||
raise EZlibError.CreateRes(@sTargetBufferTooSmall);
|
||||
finally
|
||||
DCheck(inflateEnd(strm));
|
||||
end;
|
||||
end;
|
||||
|
||||
// TCustomZlibStream
|
||||
|
||||
constructor TCustomZLibStream.Create(Strm: TStream);
|
||||
begin
|
||||
inherited Create;
|
||||
FStrm := Strm;
|
||||
FStrmPos := Strm.Position;
|
||||
FZRec.zalloc := zlibAllocMem;
|
||||
FZRec.zfree := zlibFreeMem;
|
||||
end;
|
||||
|
||||
procedure TCustomZLibStream.Progress(Sender: TObject);
|
||||
begin
|
||||
if Assigned(FOnProgress) then FOnProgress(Sender);
|
||||
end;
|
||||
|
||||
|
||||
// TCompressionStream
|
||||
|
||||
constructor TCompressionStream.Create(CompressionLevel: TCompressionLevel;
|
||||
Dest: TStream);
|
||||
const
|
||||
Levels: array [TCompressionLevel] of ShortInt =
|
||||
(Z_NO_COMPRESSION, Z_BEST_SPEED, Z_DEFAULT_COMPRESSION, Z_BEST_COMPRESSION);
|
||||
begin
|
||||
inherited Create(Dest);
|
||||
FZRec.next_out := FBuffer;
|
||||
FZRec.avail_out := sizeof(FBuffer);
|
||||
CCheck(deflateInit_(FZRec, Levels[CompressionLevel], zlib_version, sizeof(FZRec)));
|
||||
end;
|
||||
|
||||
destructor TCompressionStream.Destroy;
|
||||
begin
|
||||
FZRec.next_in := nil;
|
||||
FZRec.avail_in := 0;
|
||||
try
|
||||
if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
|
||||
while (CCheck(deflate(FZRec, Z_FINISH)) <> Z_STREAM_END)
|
||||
and (FZRec.avail_out = 0) do
|
||||
begin
|
||||
FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
|
||||
FZRec.next_out := FBuffer;
|
||||
FZRec.avail_out := sizeof(FBuffer);
|
||||
end;
|
||||
if FZRec.avail_out < sizeof(FBuffer) then
|
||||
FStrm.WriteBuffer(FBuffer, sizeof(FBuffer) - FZRec.avail_out);
|
||||
finally
|
||||
deflateEnd(FZRec);
|
||||
end;
|
||||
inherited Destroy;
|
||||
end;
|
||||
|
||||
function TCompressionStream.Read(var Buffer; Count: Longint): Longint;
|
||||
begin
|
||||
raise ECompressionError.CreateRes(@sInvalidStreamOp);
|
||||
end;
|
||||
|
||||
function TCompressionStream.Write(const Buffer; Count: Longint): Longint;
|
||||
begin
|
||||
FZRec.next_in := @Buffer;
|
||||
FZRec.avail_in := Count;
|
||||
if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
|
||||
while (FZRec.avail_in > 0) do
|
||||
begin
|
||||
CCheck(deflate(FZRec, 0));
|
||||
if FZRec.avail_out = 0 then
|
||||
begin
|
||||
FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
|
||||
FZRec.next_out := FBuffer;
|
||||
FZRec.avail_out := sizeof(FBuffer);
|
||||
FStrmPos := FStrm.Position;
|
||||
Progress(Self);
|
||||
end;
|
||||
end;
|
||||
Result := Count;
|
||||
end;
|
||||
|
||||
function TCompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
|
||||
begin
|
||||
if (Offset = 0) and (Origin = soFromCurrent) then
|
||||
Result := FZRec.total_in
|
||||
else
|
||||
raise ECompressionError.CreateRes(@sInvalidStreamOp);
|
||||
end;
|
||||
|
||||
function TCompressionStream.GetCompressionRate: Single;
|
||||
begin
|
||||
if FZRec.total_in = 0 then
|
||||
Result := 0
|
||||
else
|
||||
Result := (1.0 - (FZRec.total_out / FZRec.total_in)) * 100.0;
|
||||
end;
|
||||
|
||||
|
||||
// TDecompressionStream
|
||||
|
||||
constructor TDecompressionStream.Create(Source: TStream);
|
||||
begin
|
||||
inherited Create(Source);
|
||||
FZRec.next_in := FBuffer;
|
||||
FZRec.avail_in := 0;
|
||||
DCheck(inflateInit_(FZRec, zlib_version, sizeof(FZRec)));
|
||||
end;
|
||||
|
||||
destructor TDecompressionStream.Destroy;
|
||||
begin
|
||||
FStrm.Seek(-FZRec.avail_in, 1);
|
||||
inflateEnd(FZRec);
|
||||
inherited Destroy;
|
||||
end;
|
||||
|
||||
function TDecompressionStream.Read(var Buffer; Count: Longint): Longint;
|
||||
begin
|
||||
FZRec.next_out := @Buffer;
|
||||
FZRec.avail_out := Count;
|
||||
if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
|
||||
while (FZRec.avail_out > 0) do
|
||||
begin
|
||||
if FZRec.avail_in = 0 then
|
||||
begin
|
||||
FZRec.avail_in := FStrm.Read(FBuffer, sizeof(FBuffer));
|
||||
if FZRec.avail_in = 0 then
|
||||
begin
|
||||
Result := Count - FZRec.avail_out;
|
||||
Exit;
|
||||
end;
|
||||
FZRec.next_in := FBuffer;
|
||||
FStrmPos := FStrm.Position;
|
||||
Progress(Self);
|
||||
end;
|
||||
CCheck(inflate(FZRec, 0));
|
||||
end;
|
||||
Result := Count;
|
||||
end;
|
||||
|
||||
function TDecompressionStream.Write(const Buffer; Count: Longint): Longint;
|
||||
begin
|
||||
raise EDecompressionError.CreateRes(@sInvalidStreamOp);
|
||||
end;
|
||||
|
||||
function TDecompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
|
||||
var
|
||||
I: Integer;
|
||||
Buf: array [0..4095] of Char;
|
||||
begin
|
||||
if (Offset = 0) and (Origin = soFromBeginning) then
|
||||
begin
|
||||
DCheck(inflateReset(FZRec));
|
||||
FZRec.next_in := FBuffer;
|
||||
FZRec.avail_in := 0;
|
||||
FStrm.Position := 0;
|
||||
FStrmPos := 0;
|
||||
end
|
||||
else if ( (Offset >= 0) and (Origin = soFromCurrent)) or
|
||||
( ((Offset - FZRec.total_out) > 0) and (Origin = soFromBeginning)) then
|
||||
begin
|
||||
if Origin = soFromBeginning then Dec(Offset, FZRec.total_out);
|
||||
if Offset > 0 then
|
||||
begin
|
||||
for I := 1 to Offset div sizeof(Buf) do
|
||||
ReadBuffer(Buf, sizeof(Buf));
|
||||
ReadBuffer(Buf, Offset mod sizeof(Buf));
|
||||
end;
|
||||
end
|
||||
else
|
||||
raise EDecompressionError.CreateRes(@sInvalidStreamOp);
|
||||
Result := FZRec.total_out;
|
||||
end;
|
||||
|
||||
|
||||
end.
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
unit ZLibConst;
|
||||
|
||||
interface
|
||||
|
||||
resourcestring
|
||||
sTargetBufferTooSmall = 'ZLib error: target buffer may be too small';
|
||||
sInvalidStreamOp = 'Invalid stream operation';
|
||||
|
||||
implementation
|
||||
|
||||
end.
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
|
||||
Overview
|
||||
========
|
||||
|
||||
This directory contains an update to the ZLib interface unit,
|
||||
distributed by Borland as a Delphi supplemental component.
|
||||
|
||||
The original ZLib unit is Copyright (c) 1997,99 Borland Corp.,
|
||||
and is based on zlib version 1.0.4. There are a series of bugs
|
||||
and security problems associated with that old zlib version, and
|
||||
we recommend the users to update their ZLib unit.
|
||||
|
||||
|
||||
Summary of modifications
|
||||
========================
|
||||
|
||||
- Improved makefile, adapted to zlib version 1.2.1.
|
||||
|
||||
- Some field types from TZStreamRec are changed from Integer to
|
||||
Longint, for consistency with the zlib.h header, and for 64-bit
|
||||
readiness.
|
||||
|
||||
- The zlib_version constant is updated.
|
||||
|
||||
- The new Z_RLE strategy has its corresponding symbolic constant.
|
||||
|
||||
- The allocation and deallocation functions and function types
|
||||
(TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl,
|
||||
and _malloc and _free are added as C RTL stubs. As a result,
|
||||
the original C sources of zlib can be compiled out of the box,
|
||||
and linked to the ZLib unit.
|
||||
|
||||
|
||||
Suggestions for improvements
|
||||
============================
|
||||
|
||||
Currently, the ZLib unit provides only a limited wrapper around
|
||||
the zlib library, and much of the original zlib functionality is
|
||||
missing. Handling compressed file formats like ZIP/GZIP or PNG
|
||||
cannot be implemented without having this functionality.
|
||||
Applications that handle these formats are either using their own,
|
||||
duplicated code, or not using the ZLib unit at all.
|
||||
|
||||
Here are a few suggestions:
|
||||
|
||||
- Checksum class wrappers around adler32() and crc32(), similar
|
||||
to the Java classes that implement the java.util.zip.Checksum
|
||||
interface.
|
||||
|
||||
- The ability to read and write raw deflate streams, without the
|
||||
zlib stream header and trailer. Raw deflate streams are used
|
||||
in the ZIP file format.
|
||||
|
||||
- The ability to read and write gzip streams, used in the GZIP
|
||||
file format, and normally produced by the gzip program.
|
||||
|
||||
- The ability to select a different compression strategy, useful
|
||||
to PNG and MNG image compression, and to multimedia compression
|
||||
in general. Besides the compression level
|
||||
|
||||
TCompressionLevel = (clNone, clFastest, clDefault, clMax);
|
||||
|
||||
which, in fact, could have used the 'z' prefix and avoided
|
||||
TColor-like symbols
|
||||
|
||||
TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax);
|
||||
|
||||
there could be a compression strategy
|
||||
|
||||
TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle);
|
||||
|
||||
- ZIP and GZIP stream handling via TStreams.
|
||||
|
||||
|
||||
--
|
||||
Cosmin Truta <cosmint@cs.ubbcluj.ro>
|
||||
|
|
@ -0,0 +1,99 @@
|
|||
# Makefile for zlib
|
||||
# For use with Delphi and C++ Builder under Win32
|
||||
# Updated for zlib 1.2.x by Cosmin Truta
|
||||
|
||||
# ------------ Borland C++ ------------
|
||||
|
||||
# This project uses the Delphi (fastcall/register) calling convention:
|
||||
LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
|
||||
|
||||
CC = bcc32
|
||||
LD = bcc32
|
||||
AR = tlib
|
||||
# do not use "-pr" in CFLAGS
|
||||
CFLAGS = -a -d -k- -O2 $(LOC)
|
||||
LDFLAGS =
|
||||
|
||||
|
||||
# variables
|
||||
ZLIB_LIB = zlib.lib
|
||||
|
||||
OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
|
||||
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
|
||||
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
|
||||
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
|
||||
|
||||
|
||||
# targets
|
||||
all: $(ZLIB_LIB) example.exe minigzip.exe
|
||||
|
||||
.c.obj:
|
||||
$(CC) -c $(CFLAGS) $*.c
|
||||
|
||||
adler32.obj: adler32.c zlib.h zconf.h
|
||||
|
||||
compress.obj: compress.c zlib.h zconf.h
|
||||
|
||||
crc32.obj: crc32.c zlib.h zconf.h crc32.h
|
||||
|
||||
deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
|
||||
|
||||
gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h
|
||||
|
||||
gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h
|
||||
|
||||
gzread.obj: gzread.c zlib.h zconf.h gzguts.h
|
||||
|
||||
gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h
|
||||
|
||||
infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
|
||||
inffast.h inffixed.h
|
||||
|
||||
inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
|
||||
inffast.h
|
||||
|
||||
inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
|
||||
inffast.h inffixed.h
|
||||
|
||||
inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
|
||||
|
||||
trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
|
||||
|
||||
uncompr.obj: uncompr.c zlib.h zconf.h
|
||||
|
||||
zutil.obj: zutil.c zutil.h zlib.h zconf.h
|
||||
|
||||
example.obj: test/example.c zlib.h zconf.h
|
||||
|
||||
minigzip.obj: test/minigzip.c zlib.h zconf.h
|
||||
|
||||
|
||||
# For the sake of the old Borland make,
|
||||
# the command line is cut to fit in the MS-DOS 128 byte limit:
|
||||
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
|
||||
-del $(ZLIB_LIB)
|
||||
$(AR) $(ZLIB_LIB) $(OBJP1)
|
||||
$(AR) $(ZLIB_LIB) $(OBJP2)
|
||||
|
||||
|
||||
# testing
|
||||
test: example.exe minigzip.exe
|
||||
example
|
||||
echo hello world | minigzip | minigzip -d
|
||||
|
||||
example.exe: example.obj $(ZLIB_LIB)
|
||||
$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
|
||||
|
||||
minigzip.exe: minigzip.obj $(ZLIB_LIB)
|
||||
$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
|
||||
|
||||
|
||||
# cleanup
|
||||
clean:
|
||||
-del *.obj
|
||||
-del *.exe
|
||||
-del *.lib
|
||||
-del *.tds
|
||||
-del zlib.bak
|
||||
-del foo.gz
|
||||
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
<?xml version="1.0" encoding="utf-8" ?>
|
||||
<project name="DotZLib" default="build" basedir="./DotZLib">
|
||||
<description>A .Net wrapper library around ZLib1.dll</description>
|
||||
|
||||
<property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />
|
||||
<property name="build.root" value="bin" />
|
||||
|
||||
<property name="debug" value="true" />
|
||||
<property name="nunit" value="true" />
|
||||
|
||||
<property name="build.folder" value="${build.root}/debug/" if="${debug}" />
|
||||
<property name="build.folder" value="${build.root}/release/" unless="${debug}" />
|
||||
|
||||
<target name="clean" description="Remove all generated files">
|
||||
<delete dir="${build.root}" failonerror="false" />
|
||||
</target>
|
||||
|
||||
<target name="build" description="compiles the source code">
|
||||
|
||||
<mkdir dir="${build.folder}" />
|
||||
<csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">
|
||||
<references basedir="${nunit.location}">
|
||||
<includes if="${nunit}" name="nunit.framework.dll" />
|
||||
</references>
|
||||
<sources>
|
||||
<includes name="*.cs" />
|
||||
<excludes name="UnitTests.cs" unless="${nunit}" />
|
||||
</sources>
|
||||
<arg value="/d:nunit" if="${nunit}" />
|
||||
</csc>
|
||||
</target>
|
||||
|
||||
</project>
|
||||
Binary file not shown.
|
|
@ -0,0 +1,21 @@
|
|||
Microsoft Visual Studio Solution File, Format Version 8.00
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
|
||||
ProjectSection(ProjectDependencies) = postProject
|
||||
EndProjectSection
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfiguration) = preSolution
|
||||
Debug = Debug
|
||||
Release = Release
|
||||
EndGlobalSection
|
||||
GlobalSection(ProjectConfiguration) = postSolution
|
||||
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET
|
||||
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET
|
||||
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET
|
||||
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET
|
||||
EndGlobalSection
|
||||
GlobalSection(ExtensibilityGlobals) = postSolution
|
||||
EndGlobalSection
|
||||
GlobalSection(ExtensibilityAddIns) = postSolution
|
||||
EndGlobalSection
|
||||
EndGlobal
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
using System.Reflection;
|
||||
using System.Runtime.CompilerServices;
|
||||
|
||||
//
|
||||
// General Information about an assembly is controlled through the following
|
||||
// set of attributes. Change these attribute values to modify the information
|
||||
// associated with an assembly.
|
||||
//
|
||||
[assembly: AssemblyTitle("DotZLib")]
|
||||
[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]
|
||||
[assembly: AssemblyConfiguration("")]
|
||||
[assembly: AssemblyCompany("Henrik Ravn")]
|
||||
[assembly: AssemblyProduct("")]
|
||||
[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]
|
||||
[assembly: AssemblyTrademark("")]
|
||||
[assembly: AssemblyCulture("")]
|
||||
|
||||
//
|
||||
// Version information for an assembly consists of the following four values:
|
||||
//
|
||||
// Major Version
|
||||
// Minor Version
|
||||
// Build Number
|
||||
// Revision
|
||||
//
|
||||
// You can specify all the values or you can default the Revision and Build Numbers
|
||||
// by using the '*' as shown below:
|
||||
|
||||
[assembly: AssemblyVersion("1.0.*")]
|
||||
|
||||
//
|
||||
// In order to sign your assembly you must specify a key to use. Refer to the
|
||||
// Microsoft .NET Framework documentation for more information on assembly signing.
|
||||
//
|
||||
// Use the attributes below to control which key is used for signing.
|
||||
//
|
||||
// Notes:
|
||||
// (*) If no key is specified, the assembly is not signed.
|
||||
// (*) KeyName refers to a key that has been installed in the Crypto Service
|
||||
// Provider (CSP) on your machine. KeyFile refers to a file which contains
|
||||
// a key.
|
||||
// (*) If the KeyFile and the KeyName values are both specified, the
|
||||
// following processing occurs:
|
||||
// (1) If the KeyName can be found in the CSP, that key is used.
|
||||
// (2) If the KeyName does not exist and the KeyFile does exist, the key
|
||||
// in the KeyFile is installed into the CSP and used.
|
||||
// (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.
|
||||
// When specifying the KeyFile, the location of the KeyFile should be
|
||||
// relative to the project output directory which is
|
||||
// %Project Directory%\obj\<configuration>. For example, if your KeyFile is
|
||||
// located in the project directory, you would specify the AssemblyKeyFile
|
||||
// attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]
|
||||
// (*) Delay Signing is an advanced option - see the Microsoft .NET Framework
|
||||
// documentation for more information on this.
|
||||
//
|
||||
[assembly: AssemblyDelaySign(false)]
|
||||
[assembly: AssemblyKeyFile("")]
|
||||
[assembly: AssemblyKeyName("")]
|
||||
|
|
@ -0,0 +1,202 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Runtime.InteropServices;
|
||||
using System.Text;
|
||||
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
#region ChecksumGeneratorBase
|
||||
/// <summary>
|
||||
/// Implements the common functionality needed for all <see cref="ChecksumGenerator"/>s
|
||||
/// </summary>
|
||||
/// <example></example>
|
||||
public abstract class ChecksumGeneratorBase : ChecksumGenerator
|
||||
{
|
||||
/// <summary>
|
||||
/// The value of the current checksum
|
||||
/// </summary>
|
||||
protected uint _current;
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the checksum generator base - the current checksum is
|
||||
/// set to zero
|
||||
/// </summary>
|
||||
public ChecksumGeneratorBase()
|
||||
{
|
||||
_current = 0;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the checksum generator basewith a specified value
|
||||
/// </summary>
|
||||
/// <param name="initialValue">The value to set the current checksum to</param>
|
||||
public ChecksumGeneratorBase(uint initialValue)
|
||||
{
|
||||
_current = initialValue;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Resets the current checksum to zero
|
||||
/// </summary>
|
||||
public void Reset() { _current = 0; }
|
||||
|
||||
/// <summary>
|
||||
/// Gets the current checksum value
|
||||
/// </summary>
|
||||
public uint Value { get { return _current; } }
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with part of an array of bytes
|
||||
/// </summary>
|
||||
/// <param name="data">The data to update the checksum with</param>
|
||||
/// <param name="offset">Where in <c>data</c> to start updating</param>
|
||||
/// <param name="count">The number of bytes from <c>data</c> to use</param>
|
||||
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
|
||||
/// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
|
||||
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
|
||||
/// <remarks>All the other <c>Update</c> methods are implmeneted in terms of this one.
|
||||
/// This is therefore the only method a derived class has to implement</remarks>
|
||||
public abstract void Update(byte[] data, int offset, int count);
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with an array of bytes.
|
||||
/// </summary>
|
||||
/// <param name="data">The data to update the checksum with</param>
|
||||
public void Update(byte[] data)
|
||||
{
|
||||
Update(data, 0, data.Length);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with the data from a string
|
||||
/// </summary>
|
||||
/// <param name="data">The string to update the checksum with</param>
|
||||
/// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
|
||||
public void Update(string data)
|
||||
{
|
||||
Update(Encoding.UTF8.GetBytes(data));
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with the data from a string, using a specific encoding
|
||||
/// </summary>
|
||||
/// <param name="data">The string to update the checksum with</param>
|
||||
/// <param name="encoding">The encoding to use</param>
|
||||
public void Update(string data, Encoding encoding)
|
||||
{
|
||||
Update(encoding.GetBytes(data));
|
||||
}
|
||||
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region CRC32
|
||||
/// <summary>
|
||||
/// Implements a CRC32 checksum generator
|
||||
/// </summary>
|
||||
public sealed class CRC32Checksum : ChecksumGeneratorBase
|
||||
{
|
||||
#region DLL imports
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern uint crc32(uint crc, int data, uint length);
|
||||
|
||||
#endregion
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the CRC32 checksum generator
|
||||
/// </summary>
|
||||
public CRC32Checksum() : base() {}
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the CRC32 checksum generator with a specified value
|
||||
/// </summary>
|
||||
/// <param name="initialValue">The value to set the current checksum to</param>
|
||||
public CRC32Checksum(uint initialValue) : base(initialValue) {}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with part of an array of bytes
|
||||
/// </summary>
|
||||
/// <param name="data">The data to update the checksum with</param>
|
||||
/// <param name="offset">Where in <c>data</c> to start updating</param>
|
||||
/// <param name="count">The number of bytes from <c>data</c> to use</param>
|
||||
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
|
||||
/// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
|
||||
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
|
||||
public override void Update(byte[] data, int offset, int count)
|
||||
{
|
||||
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
|
||||
if ((offset+count) > data.Length) throw new ArgumentException();
|
||||
GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
|
||||
try
|
||||
{
|
||||
_current = crc32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
|
||||
}
|
||||
finally
|
||||
{
|
||||
hData.Free();
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Adler
|
||||
/// <summary>
|
||||
/// Implements a checksum generator that computes the Adler checksum on data
|
||||
/// </summary>
|
||||
public sealed class AdlerChecksum : ChecksumGeneratorBase
|
||||
{
|
||||
#region DLL imports
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern uint adler32(uint adler, int data, uint length);
|
||||
|
||||
#endregion
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the Adler checksum generator
|
||||
/// </summary>
|
||||
public AdlerChecksum() : base() {}
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the Adler checksum generator with a specified value
|
||||
/// </summary>
|
||||
/// <param name="initialValue">The value to set the current checksum to</param>
|
||||
public AdlerChecksum(uint initialValue) : base(initialValue) {}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with part of an array of bytes
|
||||
/// </summary>
|
||||
/// <param name="data">The data to update the checksum with</param>
|
||||
/// <param name="offset">Where in <c>data</c> to start updating</param>
|
||||
/// <param name="count">The number of bytes from <c>data</c> to use</param>
|
||||
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
|
||||
/// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
|
||||
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
|
||||
public override void Update(byte[] data, int offset, int count)
|
||||
{
|
||||
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
|
||||
if ((offset+count) > data.Length) throw new ArgumentException();
|
||||
GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
|
||||
try
|
||||
{
|
||||
_current = adler32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
|
||||
}
|
||||
finally
|
||||
{
|
||||
hData.Free();
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
#endregion
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,83 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Diagnostics;
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
|
||||
/// <summary>
|
||||
/// This class implements a circular buffer
|
||||
/// </summary>
|
||||
internal class CircularBuffer
|
||||
{
|
||||
#region Private data
|
||||
private int _capacity;
|
||||
private int _head;
|
||||
private int _tail;
|
||||
private int _size;
|
||||
private byte[] _buffer;
|
||||
#endregion
|
||||
|
||||
public CircularBuffer(int capacity)
|
||||
{
|
||||
Debug.Assert( capacity > 0 );
|
||||
_buffer = new byte[capacity];
|
||||
_capacity = capacity;
|
||||
_head = 0;
|
||||
_tail = 0;
|
||||
_size = 0;
|
||||
}
|
||||
|
||||
public int Size { get { return _size; } }
|
||||
|
||||
public int Put(byte[] source, int offset, int count)
|
||||
{
|
||||
Debug.Assert( count > 0 );
|
||||
int trueCount = Math.Min(count, _capacity - Size);
|
||||
for (int i = 0; i < trueCount; ++i)
|
||||
_buffer[(_tail+i) % _capacity] = source[offset+i];
|
||||
_tail += trueCount;
|
||||
_tail %= _capacity;
|
||||
_size += trueCount;
|
||||
return trueCount;
|
||||
}
|
||||
|
||||
public bool Put(byte b)
|
||||
{
|
||||
if (Size == _capacity) // no room
|
||||
return false;
|
||||
_buffer[_tail++] = b;
|
||||
_tail %= _capacity;
|
||||
++_size;
|
||||
return true;
|
||||
}
|
||||
|
||||
public int Get(byte[] destination, int offset, int count)
|
||||
{
|
||||
int trueCount = Math.Min(count,Size);
|
||||
for (int i = 0; i < trueCount; ++i)
|
||||
destination[offset + i] = _buffer[(_head+i) % _capacity];
|
||||
_head += trueCount;
|
||||
_head %= _capacity;
|
||||
_size -= trueCount;
|
||||
return trueCount;
|
||||
}
|
||||
|
||||
public int Get()
|
||||
{
|
||||
if (Size == 0)
|
||||
return -1;
|
||||
|
||||
int result = (int)_buffer[_head++ % _capacity];
|
||||
--_size;
|
||||
return result;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,198 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Runtime.InteropServices;
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
/// <summary>
|
||||
/// Implements the common functionality needed for all <see cref="Codec"/>s
|
||||
/// </summary>
|
||||
public abstract class CodecBase : Codec, IDisposable
|
||||
{
|
||||
|
||||
#region Data members
|
||||
|
||||
/// <summary>
|
||||
/// Instance of the internal zlib buffer structure that is
|
||||
/// passed to all functions in the zlib dll
|
||||
/// </summary>
|
||||
internal ZStream _ztream = new ZStream();
|
||||
|
||||
/// <summary>
|
||||
/// True if the object instance has been disposed, false otherwise
|
||||
/// </summary>
|
||||
protected bool _isDisposed = false;
|
||||
|
||||
/// <summary>
|
||||
/// The size of the internal buffers
|
||||
/// </summary>
|
||||
protected const int kBufferSize = 16384;
|
||||
|
||||
private byte[] _outBuffer = new byte[kBufferSize];
|
||||
private byte[] _inBuffer = new byte[kBufferSize];
|
||||
|
||||
private GCHandle _hInput;
|
||||
private GCHandle _hOutput;
|
||||
|
||||
private uint _checksum = 0;
|
||||
|
||||
#endregion
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <c>CodeBase</c> class.
|
||||
/// </summary>
|
||||
public CodecBase()
|
||||
{
|
||||
try
|
||||
{
|
||||
_hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
|
||||
_hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
|
||||
}
|
||||
catch (Exception)
|
||||
{
|
||||
CleanUp(false);
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#region Codec Members
|
||||
|
||||
/// <summary>
|
||||
/// Occurs when more processed data are available.
|
||||
/// </summary>
|
||||
public event DataAvailableHandler DataAvailable;
|
||||
|
||||
/// <summary>
|
||||
/// Fires the <see cref="DataAvailable"/> event
|
||||
/// </summary>
|
||||
protected void OnDataAvailable()
|
||||
{
|
||||
if (_ztream.total_out > 0)
|
||||
{
|
||||
if (DataAvailable != null)
|
||||
DataAvailable( _outBuffer, 0, (int)_ztream.total_out);
|
||||
resetOutput();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Adds more data to the codec to be processed.
|
||||
/// </summary>
|
||||
/// <param name="data">Byte array containing the data to be added to the codec</param>
|
||||
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
|
||||
public void Add(byte[] data)
|
||||
{
|
||||
Add(data,0,data.Length);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Adds more data to the codec to be processed.
|
||||
/// </summary>
|
||||
/// <param name="data">Byte array containing the data to be added to the codec</param>
|
||||
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
|
||||
/// <param name="count">The number of bytes to add</param>
|
||||
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
|
||||
/// <remarks>This must be implemented by a derived class</remarks>
|
||||
public abstract void Add(byte[] data, int offset, int count);
|
||||
|
||||
/// <summary>
|
||||
/// Finishes up any pending data that needs to be processed and handled.
|
||||
/// </summary>
|
||||
/// <remarks>This must be implemented by a derived class</remarks>
|
||||
public abstract void Finish();
|
||||
|
||||
/// <summary>
|
||||
/// Gets the checksum of the data that has been added so far
|
||||
/// </summary>
|
||||
public uint Checksum { get { return _checksum; } }
|
||||
|
||||
#endregion
|
||||
|
||||
#region Destructor & IDisposable stuff
|
||||
|
||||
/// <summary>
|
||||
/// Destroys this instance
|
||||
/// </summary>
|
||||
~CodecBase()
|
||||
{
|
||||
CleanUp(false);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
|
||||
/// </summary>
|
||||
public void Dispose()
|
||||
{
|
||||
CleanUp(true);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Performs any codec specific cleanup
|
||||
/// </summary>
|
||||
/// <remarks>This must be implemented by a derived class</remarks>
|
||||
protected abstract void CleanUp();
|
||||
|
||||
// performs the release of the handles and calls the dereived CleanUp()
|
||||
private void CleanUp(bool isDisposing)
|
||||
{
|
||||
if (!_isDisposed)
|
||||
{
|
||||
CleanUp();
|
||||
if (_hInput.IsAllocated)
|
||||
_hInput.Free();
|
||||
if (_hOutput.IsAllocated)
|
||||
_hOutput.Free();
|
||||
|
||||
_isDisposed = true;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#endregion
|
||||
|
||||
#region Helper methods
|
||||
|
||||
/// <summary>
|
||||
/// Copies a number of bytes to the internal codec buffer - ready for proccesing
|
||||
/// </summary>
|
||||
/// <param name="data">The byte array that contains the data to copy</param>
|
||||
/// <param name="startIndex">The index of the first byte to copy</param>
|
||||
/// <param name="count">The number of bytes to copy from <c>data</c></param>
|
||||
protected void copyInput(byte[] data, int startIndex, int count)
|
||||
{
|
||||
Array.Copy(data, startIndex, _inBuffer,0, count);
|
||||
_ztream.next_in = _hInput.AddrOfPinnedObject();
|
||||
_ztream.total_in = 0;
|
||||
_ztream.avail_in = (uint)count;
|
||||
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Resets the internal output buffers to a known state - ready for processing
|
||||
/// </summary>
|
||||
protected void resetOutput()
|
||||
{
|
||||
_ztream.total_out = 0;
|
||||
_ztream.avail_out = kBufferSize;
|
||||
_ztream.next_out = _hOutput.AddrOfPinnedObject();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Updates the running checksum property
|
||||
/// </summary>
|
||||
/// <param name="newSum">The new checksum value</param>
|
||||
protected void setChecksum(uint newSum)
|
||||
{
|
||||
_checksum = newSum;
|
||||
}
|
||||
#endregion
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,106 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Diagnostics;
|
||||
using System.Runtime.InteropServices;
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
|
||||
/// <summary>
|
||||
/// Implements a data compressor, using the deflate algorithm in the ZLib dll
|
||||
/// </summary>
|
||||
public sealed class Deflater : CodecBase
|
||||
{
|
||||
#region Dll imports
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
|
||||
private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int deflate(ref ZStream sz, int flush);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int deflateReset(ref ZStream sz);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int deflateEnd(ref ZStream sz);
|
||||
#endregion
|
||||
|
||||
/// <summary>
|
||||
/// Constructs an new instance of the <c>Deflater</c>
|
||||
/// </summary>
|
||||
/// <param name="level">The compression level to use for this <c>Deflater</c></param>
|
||||
public Deflater(CompressLevel level) : base()
|
||||
{
|
||||
int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
|
||||
if (retval != 0)
|
||||
throw new ZLibException(retval, "Could not initialize deflater");
|
||||
|
||||
resetOutput();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Adds more data to the codec to be processed.
|
||||
/// </summary>
|
||||
/// <param name="data">Byte array containing the data to be added to the codec</param>
|
||||
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
|
||||
/// <param name="count">The number of bytes to add</param>
|
||||
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
|
||||
public override void Add(byte[] data, int offset, int count)
|
||||
{
|
||||
if (data == null) throw new ArgumentNullException();
|
||||
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
|
||||
if ((offset+count) > data.Length) throw new ArgumentException();
|
||||
|
||||
int total = count;
|
||||
int inputIndex = offset;
|
||||
int err = 0;
|
||||
|
||||
while (err >= 0 && inputIndex < total)
|
||||
{
|
||||
copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
|
||||
while (err >= 0 && _ztream.avail_in > 0)
|
||||
{
|
||||
err = deflate(ref _ztream, (int)FlushTypes.None);
|
||||
if (err == 0)
|
||||
while (_ztream.avail_out == 0)
|
||||
{
|
||||
OnDataAvailable();
|
||||
err = deflate(ref _ztream, (int)FlushTypes.None);
|
||||
}
|
||||
inputIndex += (int)_ztream.total_in;
|
||||
}
|
||||
}
|
||||
setChecksum( _ztream.adler );
|
||||
}
|
||||
|
||||
|
||||
/// <summary>
|
||||
/// Finishes up any pending data that needs to be processed and handled.
|
||||
/// </summary>
|
||||
public override void Finish()
|
||||
{
|
||||
int err;
|
||||
do
|
||||
{
|
||||
err = deflate(ref _ztream, (int)FlushTypes.Finish);
|
||||
OnDataAvailable();
|
||||
}
|
||||
while (err == 0);
|
||||
setChecksum( _ztream.adler );
|
||||
deflateReset(ref _ztream);
|
||||
resetOutput();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Closes the internal zlib deflate stream
|
||||
/// </summary>
|
||||
protected override void CleanUp() { deflateEnd(ref _ztream); }
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,288 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.IO;
|
||||
using System.Runtime.InteropServices;
|
||||
using System.Text;
|
||||
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
|
||||
#region Internal types
|
||||
|
||||
/// <summary>
|
||||
/// Defines constants for the various flush types used with zlib
|
||||
/// </summary>
|
||||
internal enum FlushTypes
|
||||
{
|
||||
None, Partial, Sync, Full, Finish, Block
|
||||
}
|
||||
|
||||
#region ZStream structure
|
||||
// internal mapping of the zlib zstream structure for marshalling
|
||||
[StructLayoutAttribute(LayoutKind.Sequential, Pack=4, Size=0, CharSet=CharSet.Ansi)]
|
||||
internal struct ZStream
|
||||
{
|
||||
public IntPtr next_in;
|
||||
public uint avail_in;
|
||||
public uint total_in;
|
||||
|
||||
public IntPtr next_out;
|
||||
public uint avail_out;
|
||||
public uint total_out;
|
||||
|
||||
[MarshalAs(UnmanagedType.LPStr)]
|
||||
string msg;
|
||||
uint state;
|
||||
|
||||
uint zalloc;
|
||||
uint zfree;
|
||||
uint opaque;
|
||||
|
||||
int data_type;
|
||||
public uint adler;
|
||||
uint reserved;
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#endregion
|
||||
|
||||
#region Public enums
|
||||
/// <summary>
|
||||
/// Defines constants for the available compression levels in zlib
|
||||
/// </summary>
|
||||
public enum CompressLevel : int
|
||||
{
|
||||
/// <summary>
|
||||
/// The default compression level with a reasonable compromise between compression and speed
|
||||
/// </summary>
|
||||
Default = -1,
|
||||
/// <summary>
|
||||
/// No compression at all. The data are passed straight through.
|
||||
/// </summary>
|
||||
None = 0,
|
||||
/// <summary>
|
||||
/// The maximum compression rate available.
|
||||
/// </summary>
|
||||
Best = 9,
|
||||
/// <summary>
|
||||
/// The fastest available compression level.
|
||||
/// </summary>
|
||||
Fastest = 1
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Exception classes
|
||||
/// <summary>
|
||||
/// The exception that is thrown when an error occurs on the zlib dll
|
||||
/// </summary>
|
||||
public class ZLibException : ApplicationException
|
||||
{
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
|
||||
/// error message and error code
|
||||
/// </summary>
|
||||
/// <param name="errorCode">The zlib error code that caused the exception</param>
|
||||
/// <param name="msg">A message that (hopefully) describes the error</param>
|
||||
public ZLibException(int errorCode, string msg) : base(String.Format("ZLib error {0} {1}", errorCode, msg))
|
||||
{
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
|
||||
/// error code
|
||||
/// </summary>
|
||||
/// <param name="errorCode">The zlib error code that caused the exception</param>
|
||||
public ZLibException(int errorCode) : base(String.Format("ZLib error {0}", errorCode))
|
||||
{
|
||||
}
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Interfaces
|
||||
|
||||
/// <summary>
|
||||
/// Declares methods and properties that enables a running checksum to be calculated
|
||||
/// </summary>
|
||||
public interface ChecksumGenerator
|
||||
{
|
||||
/// <summary>
|
||||
/// Gets the current value of the checksum
|
||||
/// </summary>
|
||||
uint Value { get; }
|
||||
|
||||
/// <summary>
|
||||
/// Clears the current checksum to 0
|
||||
/// </summary>
|
||||
void Reset();
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with an array of bytes
|
||||
/// </summary>
|
||||
/// <param name="data">The data to update the checksum with</param>
|
||||
void Update(byte[] data);
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with part of an array of bytes
|
||||
/// </summary>
|
||||
/// <param name="data">The data to update the checksum with</param>
|
||||
/// <param name="offset">Where in <c>data</c> to start updating</param>
|
||||
/// <param name="count">The number of bytes from <c>data</c> to use</param>
|
||||
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
|
||||
/// <exception cref="ArgumentNullException"><c>data</c> is a null reference</exception>
|
||||
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
|
||||
void Update(byte[] data, int offset, int count);
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with the data from a string
|
||||
/// </summary>
|
||||
/// <param name="data">The string to update the checksum with</param>
|
||||
/// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
|
||||
void Update(string data);
|
||||
|
||||
/// <summary>
|
||||
/// Updates the current checksum with the data from a string, using a specific encoding
|
||||
/// </summary>
|
||||
/// <param name="data">The string to update the checksum with</param>
|
||||
/// <param name="encoding">The encoding to use</param>
|
||||
void Update(string data, Encoding encoding);
|
||||
}
|
||||
|
||||
|
||||
/// <summary>
|
||||
/// Represents the method that will be called from a codec when new data
|
||||
/// are available.
|
||||
/// </summary>
|
||||
/// <paramref name="data">The byte array containing the processed data</paramref>
|
||||
/// <paramref name="startIndex">The index of the first processed byte in <c>data</c></paramref>
|
||||
/// <paramref name="count">The number of processed bytes available</paramref>
|
||||
/// <remarks>On return from this method, the data may be overwritten, so grab it while you can.
|
||||
/// You cannot assume that startIndex will be zero.
|
||||
/// </remarks>
|
||||
public delegate void DataAvailableHandler(byte[] data, int startIndex, int count);
|
||||
|
||||
/// <summary>
|
||||
/// Declares methods and events for implementing compressors/decompressors
|
||||
/// </summary>
|
||||
public interface Codec
|
||||
{
|
||||
/// <summary>
|
||||
/// Occurs when more processed data are available.
|
||||
/// </summary>
|
||||
event DataAvailableHandler DataAvailable;
|
||||
|
||||
/// <summary>
|
||||
/// Adds more data to the codec to be processed.
|
||||
/// </summary>
|
||||
/// <param name="data">Byte array containing the data to be added to the codec</param>
|
||||
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
|
||||
void Add(byte[] data);
|
||||
|
||||
/// <summary>
|
||||
/// Adds more data to the codec to be processed.
|
||||
/// </summary>
|
||||
/// <param name="data">Byte array containing the data to be added to the codec</param>
|
||||
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
|
||||
/// <param name="count">The number of bytes to add</param>
|
||||
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
|
||||
void Add(byte[] data, int offset, int count);
|
||||
|
||||
/// <summary>
|
||||
/// Finishes up any pending data that needs to be processed and handled.
|
||||
/// </summary>
|
||||
void Finish();
|
||||
|
||||
/// <summary>
|
||||
/// Gets the checksum of the data that has been added so far
|
||||
/// </summary>
|
||||
uint Checksum { get; }
|
||||
|
||||
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Classes
|
||||
/// <summary>
|
||||
/// Encapsulates general information about the ZLib library
|
||||
/// </summary>
|
||||
public class Info
|
||||
{
|
||||
#region DLL imports
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern uint zlibCompileFlags();
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern string zlibVersion();
|
||||
#endregion
|
||||
|
||||
#region Private stuff
|
||||
private uint _flags;
|
||||
|
||||
// helper function that unpacks a bitsize mask
|
||||
private static int bitSize(uint bits)
|
||||
{
|
||||
switch (bits)
|
||||
{
|
||||
case 0: return 16;
|
||||
case 1: return 32;
|
||||
case 2: return 64;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
#endregion
|
||||
|
||||
/// <summary>
|
||||
/// Constructs an instance of the <c>Info</c> class.
|
||||
/// </summary>
|
||||
public Info()
|
||||
{
|
||||
_flags = zlibCompileFlags();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// True if the library is compiled with debug info
|
||||
/// </summary>
|
||||
public bool HasDebugInfo { get { return 0 != (_flags & 0x100); } }
|
||||
|
||||
/// <summary>
|
||||
/// True if the library is compiled with assembly optimizations
|
||||
/// </summary>
|
||||
public bool UsesAssemblyCode { get { return 0 != (_flags & 0x200); } }
|
||||
|
||||
/// <summary>
|
||||
/// Gets the size of the unsigned int that was compiled into Zlib
|
||||
/// </summary>
|
||||
public int SizeOfUInt { get { return bitSize(_flags & 3); } }
|
||||
|
||||
/// <summary>
|
||||
/// Gets the size of the unsigned long that was compiled into Zlib
|
||||
/// </summary>
|
||||
public int SizeOfULong { get { return bitSize((_flags >> 2) & 3); } }
|
||||
|
||||
/// <summary>
|
||||
/// Gets the size of the pointers that were compiled into Zlib
|
||||
/// </summary>
|
||||
public int SizeOfPointer { get { return bitSize((_flags >> 4) & 3); } }
|
||||
|
||||
/// <summary>
|
||||
/// Gets the size of the z_off_t type that was compiled into Zlib
|
||||
/// </summary>
|
||||
public int SizeOfOffset { get { return bitSize((_flags >> 6) & 3); } }
|
||||
|
||||
/// <summary>
|
||||
/// Gets the version of ZLib as a string, e.g. "1.2.1"
|
||||
/// </summary>
|
||||
public static string Version { get { return zlibVersion(); } }
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,141 @@
|
|||
<VisualStudioProject>
|
||||
<CSHARP
|
||||
ProjectType = "Local"
|
||||
ProductVersion = "7.10.3077"
|
||||
SchemaVersion = "2.0"
|
||||
ProjectGuid = "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
|
||||
>
|
||||
<Build>
|
||||
<Settings
|
||||
ApplicationIcon = ""
|
||||
AssemblyKeyContainerName = ""
|
||||
AssemblyName = "DotZLib"
|
||||
AssemblyOriginatorKeyFile = ""
|
||||
DefaultClientScript = "JScript"
|
||||
DefaultHTMLPageLayout = "Grid"
|
||||
DefaultTargetSchema = "IE50"
|
||||
DelaySign = "false"
|
||||
OutputType = "Library"
|
||||
PreBuildEvent = ""
|
||||
PostBuildEvent = ""
|
||||
RootNamespace = "DotZLib"
|
||||
RunPostBuildEvent = "OnBuildSuccess"
|
||||
StartupObject = ""
|
||||
>
|
||||
<Config
|
||||
Name = "Debug"
|
||||
AllowUnsafeBlocks = "false"
|
||||
BaseAddress = "285212672"
|
||||
CheckForOverflowUnderflow = "false"
|
||||
ConfigurationOverrideFile = ""
|
||||
DefineConstants = "DEBUG;TRACE"
|
||||
DocumentationFile = "docs\DotZLib.xml"
|
||||
DebugSymbols = "true"
|
||||
FileAlignment = "4096"
|
||||
IncrementalBuild = "false"
|
||||
NoStdLib = "false"
|
||||
NoWarn = "1591"
|
||||
Optimize = "false"
|
||||
OutputPath = "bin\Debug\"
|
||||
RegisterForComInterop = "false"
|
||||
RemoveIntegerChecks = "false"
|
||||
TreatWarningsAsErrors = "false"
|
||||
WarningLevel = "4"
|
||||
/>
|
||||
<Config
|
||||
Name = "Release"
|
||||
AllowUnsafeBlocks = "false"
|
||||
BaseAddress = "285212672"
|
||||
CheckForOverflowUnderflow = "false"
|
||||
ConfigurationOverrideFile = ""
|
||||
DefineConstants = "TRACE"
|
||||
DocumentationFile = "docs\DotZLib.xml"
|
||||
DebugSymbols = "false"
|
||||
FileAlignment = "4096"
|
||||
IncrementalBuild = "false"
|
||||
NoStdLib = "false"
|
||||
NoWarn = ""
|
||||
Optimize = "true"
|
||||
OutputPath = "bin\Release\"
|
||||
RegisterForComInterop = "false"
|
||||
RemoveIntegerChecks = "false"
|
||||
TreatWarningsAsErrors = "false"
|
||||
WarningLevel = "4"
|
||||
/>
|
||||
</Settings>
|
||||
<References>
|
||||
<Reference
|
||||
Name = "System"
|
||||
AssemblyName = "System"
|
||||
HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.dll"
|
||||
/>
|
||||
<Reference
|
||||
Name = "System.Data"
|
||||
AssemblyName = "System.Data"
|
||||
HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.Data.dll"
|
||||
/>
|
||||
<Reference
|
||||
Name = "System.XML"
|
||||
AssemblyName = "System.Xml"
|
||||
HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.XML.dll"
|
||||
/>
|
||||
<Reference
|
||||
Name = "nunit.framework"
|
||||
AssemblyName = "nunit.framework"
|
||||
HintPath = "E:\apps\NUnit V2.1\\bin\nunit.framework.dll"
|
||||
AssemblyFolderKey = "hklm\dn\nunit.framework"
|
||||
/>
|
||||
</References>
|
||||
</Build>
|
||||
<Files>
|
||||
<Include>
|
||||
<File
|
||||
RelPath = "AssemblyInfo.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "ChecksumImpl.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "CircularBuffer.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "CodecBase.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "Deflater.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "DotZLib.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "GZipStream.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "Inflater.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
<File
|
||||
RelPath = "UnitTests.cs"
|
||||
SubType = "Code"
|
||||
BuildAction = "Compile"
|
||||
/>
|
||||
</Include>
|
||||
</Files>
|
||||
</CSHARP>
|
||||
</VisualStudioProject>
|
||||
|
||||
|
|
@ -0,0 +1,301 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.IO;
|
||||
using System.Runtime.InteropServices;
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
/// <summary>
|
||||
/// Implements a compressed <see cref="Stream"/>, in GZip (.gz) format.
|
||||
/// </summary>
|
||||
public class GZipStream : Stream, IDisposable
|
||||
{
|
||||
#region Dll Imports
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
|
||||
private static extern IntPtr gzopen(string name, string mode);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int gzclose(IntPtr gzFile);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int gzwrite(IntPtr gzFile, int data, int length);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int gzread(IntPtr gzFile, int data, int length);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int gzgetc(IntPtr gzFile);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int gzputc(IntPtr gzFile, int c);
|
||||
|
||||
#endregion
|
||||
|
||||
#region Private data
|
||||
private IntPtr _gzFile;
|
||||
private bool _isDisposed = false;
|
||||
private bool _isWriting;
|
||||
#endregion
|
||||
|
||||
#region Constructors
|
||||
/// <summary>
|
||||
/// Creates a new file as a writeable GZipStream
|
||||
/// </summary>
|
||||
/// <param name="fileName">The name of the compressed file to create</param>
|
||||
/// <param name="level">The compression level to use when adding data</param>
|
||||
/// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
|
||||
public GZipStream(string fileName, CompressLevel level)
|
||||
{
|
||||
_isWriting = true;
|
||||
_gzFile = gzopen(fileName, String.Format("wb{0}", (int)level));
|
||||
if (_gzFile == IntPtr.Zero)
|
||||
throw new ZLibException(-1, "Could not open " + fileName);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Opens an existing file as a readable GZipStream
|
||||
/// </summary>
|
||||
/// <param name="fileName">The name of the file to open</param>
|
||||
/// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
|
||||
public GZipStream(string fileName)
|
||||
{
|
||||
_isWriting = false;
|
||||
_gzFile = gzopen(fileName, "rb");
|
||||
if (_gzFile == IntPtr.Zero)
|
||||
throw new ZLibException(-1, "Could not open " + fileName);
|
||||
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Access properties
|
||||
/// <summary>
|
||||
/// Returns true of this stream can be read from, false otherwise
|
||||
/// </summary>
|
||||
public override bool CanRead
|
||||
{
|
||||
get
|
||||
{
|
||||
return !_isWriting;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// <summary>
|
||||
/// Returns false.
|
||||
/// </summary>
|
||||
public override bool CanSeek
|
||||
{
|
||||
get
|
||||
{
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns true if this tsream is writeable, false otherwise
|
||||
/// </summary>
|
||||
public override bool CanWrite
|
||||
{
|
||||
get
|
||||
{
|
||||
return _isWriting;
|
||||
}
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Destructor & IDispose stuff
|
||||
|
||||
/// <summary>
|
||||
/// Destroys this instance
|
||||
/// </summary>
|
||||
~GZipStream()
|
||||
{
|
||||
cleanUp(false);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Closes the external file handle
|
||||
/// </summary>
|
||||
public void Dispose()
|
||||
{
|
||||
cleanUp(true);
|
||||
}
|
||||
|
||||
// Does the actual closing of the file handle.
|
||||
private void cleanUp(bool isDisposing)
|
||||
{
|
||||
if (!_isDisposed)
|
||||
{
|
||||
gzclose(_gzFile);
|
||||
_isDisposed = true;
|
||||
}
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Basic reading and writing
|
||||
/// <summary>
|
||||
/// Attempts to read a number of bytes from the stream.
|
||||
/// </summary>
|
||||
/// <param name="buffer">The destination data buffer</param>
|
||||
/// <param name="offset">The index of the first destination byte in <c>buffer</c></param>
|
||||
/// <param name="count">The number of bytes requested</param>
|
||||
/// <returns>The number of bytes read</returns>
|
||||
/// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
|
||||
/// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
|
||||
/// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is > buffer.Length</exception>
|
||||
/// <exception cref="NotSupportedException">If this stream is not readable.</exception>
|
||||
/// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
|
||||
public override int Read(byte[] buffer, int offset, int count)
|
||||
{
|
||||
if (!CanRead) throw new NotSupportedException();
|
||||
if (buffer == null) throw new ArgumentNullException();
|
||||
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
|
||||
if ((offset+count) > buffer.Length) throw new ArgumentException();
|
||||
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
|
||||
|
||||
GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
|
||||
int result;
|
||||
try
|
||||
{
|
||||
result = gzread(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
|
||||
if (result < 0)
|
||||
throw new IOException();
|
||||
}
|
||||
finally
|
||||
{
|
||||
h.Free();
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Attempts to read a single byte from the stream.
|
||||
/// </summary>
|
||||
/// <returns>The byte that was read, or -1 in case of error or End-Of-File</returns>
|
||||
public override int ReadByte()
|
||||
{
|
||||
if (!CanRead) throw new NotSupportedException();
|
||||
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
|
||||
return gzgetc(_gzFile);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Writes a number of bytes to the stream
|
||||
/// </summary>
|
||||
/// <param name="buffer"></param>
|
||||
/// <param name="offset"></param>
|
||||
/// <param name="count"></param>
|
||||
/// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
|
||||
/// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
|
||||
/// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is > buffer.Length</exception>
|
||||
/// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
|
||||
/// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
|
||||
public override void Write(byte[] buffer, int offset, int count)
|
||||
{
|
||||
if (!CanWrite) throw new NotSupportedException();
|
||||
if (buffer == null) throw new ArgumentNullException();
|
||||
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
|
||||
if ((offset+count) > buffer.Length) throw new ArgumentException();
|
||||
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
|
||||
|
||||
GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
|
||||
try
|
||||
{
|
||||
int result = gzwrite(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
|
||||
if (result < 0)
|
||||
throw new IOException();
|
||||
}
|
||||
finally
|
||||
{
|
||||
h.Free();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Writes a single byte to the stream
|
||||
/// </summary>
|
||||
/// <param name="value">The byte to add to the stream.</param>
|
||||
/// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
|
||||
/// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
|
||||
public override void WriteByte(byte value)
|
||||
{
|
||||
if (!CanWrite) throw new NotSupportedException();
|
||||
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
|
||||
|
||||
int result = gzputc(_gzFile, (int)value);
|
||||
if (result < 0)
|
||||
throw new IOException();
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Position & length stuff
|
||||
/// <summary>
|
||||
/// Not supported.
|
||||
/// </summary>
|
||||
/// <param name="value"></param>
|
||||
/// <exception cref="NotSupportedException">Always thrown</exception>
|
||||
public override void SetLength(long value)
|
||||
{
|
||||
throw new NotSupportedException();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Not suppported.
|
||||
/// </summary>
|
||||
/// <param name="offset"></param>
|
||||
/// <param name="origin"></param>
|
||||
/// <returns></returns>
|
||||
/// <exception cref="NotSupportedException">Always thrown</exception>
|
||||
public override long Seek(long offset, SeekOrigin origin)
|
||||
{
|
||||
throw new NotSupportedException();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Flushes the <c>GZipStream</c>.
|
||||
/// </summary>
|
||||
/// <remarks>In this implementation, this method does nothing. This is because excessive
|
||||
/// flushing may degrade the achievable compression rates.</remarks>
|
||||
public override void Flush()
|
||||
{
|
||||
// left empty on purpose
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets/sets the current position in the <c>GZipStream</c>. Not suppported.
|
||||
/// </summary>
|
||||
/// <remarks>In this implementation this property is not supported</remarks>
|
||||
/// <exception cref="NotSupportedException">Always thrown</exception>
|
||||
public override long Position
|
||||
{
|
||||
get
|
||||
{
|
||||
throw new NotSupportedException();
|
||||
}
|
||||
set
|
||||
{
|
||||
throw new NotSupportedException();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the size of the stream. Not suppported.
|
||||
/// </summary>
|
||||
/// <remarks>In this implementation this property is not supported</remarks>
|
||||
/// <exception cref="NotSupportedException">Always thrown</exception>
|
||||
public override long Length
|
||||
{
|
||||
get
|
||||
{
|
||||
throw new NotSupportedException();
|
||||
}
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,105 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Diagnostics;
|
||||
using System.Runtime.InteropServices;
|
||||
|
||||
namespace DotZLib
|
||||
{
|
||||
|
||||
/// <summary>
|
||||
/// Implements a data decompressor, using the inflate algorithm in the ZLib dll
|
||||
/// </summary>
|
||||
public class Inflater : CodecBase
|
||||
{
|
||||
#region Dll imports
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
|
||||
private static extern int inflateInit_(ref ZStream sz, string vs, int size);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int inflate(ref ZStream sz, int flush);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int inflateReset(ref ZStream sz);
|
||||
|
||||
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
|
||||
private static extern int inflateEnd(ref ZStream sz);
|
||||
#endregion
|
||||
|
||||
/// <summary>
|
||||
/// Constructs an new instance of the <c>Inflater</c>
|
||||
/// </summary>
|
||||
public Inflater() : base()
|
||||
{
|
||||
int retval = inflateInit_(ref _ztream, Info.Version, Marshal.SizeOf(_ztream));
|
||||
if (retval != 0)
|
||||
throw new ZLibException(retval, "Could not initialize inflater");
|
||||
|
||||
resetOutput();
|
||||
}
|
||||
|
||||
|
||||
/// <summary>
|
||||
/// Adds more data to the codec to be processed.
|
||||
/// </summary>
|
||||
/// <param name="data">Byte array containing the data to be added to the codec</param>
|
||||
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
|
||||
/// <param name="count">The number of bytes to add</param>
|
||||
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
|
||||
public override void Add(byte[] data, int offset, int count)
|
||||
{
|
||||
if (data == null) throw new ArgumentNullException();
|
||||
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
|
||||
if ((offset+count) > data.Length) throw new ArgumentException();
|
||||
|
||||
int total = count;
|
||||
int inputIndex = offset;
|
||||
int err = 0;
|
||||
|
||||
while (err >= 0 && inputIndex < total)
|
||||
{
|
||||
copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
|
||||
err = inflate(ref _ztream, (int)FlushTypes.None);
|
||||
if (err == 0)
|
||||
while (_ztream.avail_out == 0)
|
||||
{
|
||||
OnDataAvailable();
|
||||
err = inflate(ref _ztream, (int)FlushTypes.None);
|
||||
}
|
||||
|
||||
inputIndex += (int)_ztream.total_in;
|
||||
}
|
||||
setChecksum( _ztream.adler );
|
||||
}
|
||||
|
||||
|
||||
/// <summary>
|
||||
/// Finishes up any pending data that needs to be processed and handled.
|
||||
/// </summary>
|
||||
public override void Finish()
|
||||
{
|
||||
int err;
|
||||
do
|
||||
{
|
||||
err = inflate(ref _ztream, (int)FlushTypes.Finish);
|
||||
OnDataAvailable();
|
||||
}
|
||||
while (err == 0);
|
||||
setChecksum( _ztream.adler );
|
||||
inflateReset(ref _ztream);
|
||||
resetOutput();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Closes the internal zlib inflate stream
|
||||
/// </summary>
|
||||
protected override void CleanUp() { inflateEnd(ref _ztream); }
|
||||
|
||||
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,274 @@
|
|||
//
|
||||
// © Copyright Henrik Ravn 2004
|
||||
//
|
||||
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
//
|
||||
|
||||
using System;
|
||||
using System.Collections;
|
||||
using System.IO;
|
||||
|
||||
// uncomment the define below to include unit tests
|
||||
//#define nunit
|
||||
#if nunit
|
||||
using NUnit.Framework;
|
||||
|
||||
// Unit tests for the DotZLib class library
|
||||
// ----------------------------------------
|
||||
//
|
||||
// Use this with NUnit 2 from http://www.nunit.org
|
||||
//
|
||||
|
||||
namespace DotZLibTests
|
||||
{
|
||||
using DotZLib;
|
||||
|
||||
// helper methods
|
||||
internal class Utils
|
||||
{
|
||||
public static bool byteArrEqual( byte[] lhs, byte[] rhs )
|
||||
{
|
||||
if (lhs.Length != rhs.Length)
|
||||
return false;
|
||||
for (int i = lhs.Length-1; i >= 0; --i)
|
||||
if (lhs[i] != rhs[i])
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
[TestFixture]
|
||||
public class CircBufferTests
|
||||
{
|
||||
#region Circular buffer tests
|
||||
[Test]
|
||||
public void SinglePutGet()
|
||||
{
|
||||
CircularBuffer buf = new CircularBuffer(10);
|
||||
Assert.AreEqual( 0, buf.Size );
|
||||
Assert.AreEqual( -1, buf.Get() );
|
||||
|
||||
Assert.IsTrue(buf.Put( 1 ));
|
||||
Assert.AreEqual( 1, buf.Size );
|
||||
Assert.AreEqual( 1, buf.Get() );
|
||||
Assert.AreEqual( 0, buf.Size );
|
||||
Assert.AreEqual( -1, buf.Get() );
|
||||
}
|
||||
|
||||
[Test]
|
||||
public void BlockPutGet()
|
||||
{
|
||||
CircularBuffer buf = new CircularBuffer(10);
|
||||
byte[] arr = {1,2,3,4,5,6,7,8,9,10};
|
||||
Assert.AreEqual( 10, buf.Put(arr,0,10) );
|
||||
Assert.AreEqual( 10, buf.Size );
|
||||
Assert.IsFalse( buf.Put(11) );
|
||||
Assert.AreEqual( 1, buf.Get() );
|
||||
Assert.IsTrue( buf.Put(11) );
|
||||
|
||||
byte[] arr2 = (byte[])arr.Clone();
|
||||
Assert.AreEqual( 9, buf.Get(arr2,1,9) );
|
||||
Assert.IsTrue( Utils.byteArrEqual(arr,arr2) );
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
|
||||
[TestFixture]
|
||||
public class ChecksumTests
|
||||
{
|
||||
#region CRC32 Tests
|
||||
[Test]
|
||||
public void CRC32_Null()
|
||||
{
|
||||
CRC32Checksum crc32 = new CRC32Checksum();
|
||||
Assert.AreEqual( 0, crc32.Value );
|
||||
|
||||
crc32 = new CRC32Checksum(1);
|
||||
Assert.AreEqual( 1, crc32.Value );
|
||||
|
||||
crc32 = new CRC32Checksum(556);
|
||||
Assert.AreEqual( 556, crc32.Value );
|
||||
}
|
||||
|
||||
[Test]
|
||||
public void CRC32_Data()
|
||||
{
|
||||
CRC32Checksum crc32 = new CRC32Checksum();
|
||||
byte[] data = { 1,2,3,4,5,6,7 };
|
||||
crc32.Update(data);
|
||||
Assert.AreEqual( 0x70e46888, crc32.Value );
|
||||
|
||||
crc32 = new CRC32Checksum();
|
||||
crc32.Update("penguin");
|
||||
Assert.AreEqual( 0x0e5c1a120, crc32.Value );
|
||||
|
||||
crc32 = new CRC32Checksum(1);
|
||||
crc32.Update("penguin");
|
||||
Assert.AreEqual(0x43b6aa94, crc32.Value);
|
||||
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Adler tests
|
||||
|
||||
[Test]
|
||||
public void Adler_Null()
|
||||
{
|
||||
AdlerChecksum adler = new AdlerChecksum();
|
||||
Assert.AreEqual(0, adler.Value);
|
||||
|
||||
adler = new AdlerChecksum(1);
|
||||
Assert.AreEqual( 1, adler.Value );
|
||||
|
||||
adler = new AdlerChecksum(556);
|
||||
Assert.AreEqual( 556, adler.Value );
|
||||
}
|
||||
|
||||
[Test]
|
||||
public void Adler_Data()
|
||||
{
|
||||
AdlerChecksum adler = new AdlerChecksum(1);
|
||||
byte[] data = { 1,2,3,4,5,6,7 };
|
||||
adler.Update(data);
|
||||
Assert.AreEqual( 0x5b001d, adler.Value );
|
||||
|
||||
adler = new AdlerChecksum();
|
||||
adler.Update("penguin");
|
||||
Assert.AreEqual(0x0bcf02f6, adler.Value );
|
||||
|
||||
adler = new AdlerChecksum(1);
|
||||
adler.Update("penguin");
|
||||
Assert.AreEqual(0x0bd602f7, adler.Value);
|
||||
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
|
||||
[TestFixture]
|
||||
public class InfoTests
|
||||
{
|
||||
#region Info tests
|
||||
[Test]
|
||||
public void Info_Version()
|
||||
{
|
||||
Info info = new Info();
|
||||
Assert.AreEqual("1.2.8", Info.Version);
|
||||
Assert.AreEqual(32, info.SizeOfUInt);
|
||||
Assert.AreEqual(32, info.SizeOfULong);
|
||||
Assert.AreEqual(32, info.SizeOfPointer);
|
||||
Assert.AreEqual(32, info.SizeOfOffset);
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
|
||||
[TestFixture]
|
||||
public class DeflateInflateTests
|
||||
{
|
||||
#region Deflate tests
|
||||
[Test]
|
||||
public void Deflate_Init()
|
||||
{
|
||||
using (Deflater def = new Deflater(CompressLevel.Default))
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
private ArrayList compressedData = new ArrayList();
|
||||
private uint adler1;
|
||||
|
||||
private ArrayList uncompressedData = new ArrayList();
|
||||
private uint adler2;
|
||||
|
||||
public void CDataAvail(byte[] data, int startIndex, int count)
|
||||
{
|
||||
for (int i = 0; i < count; ++i)
|
||||
compressedData.Add(data[i+startIndex]);
|
||||
}
|
||||
|
||||
[Test]
|
||||
public void Deflate_Compress()
|
||||
{
|
||||
compressedData.Clear();
|
||||
|
||||
byte[] testData = new byte[35000];
|
||||
for (int i = 0; i < testData.Length; ++i)
|
||||
testData[i] = 5;
|
||||
|
||||
using (Deflater def = new Deflater((CompressLevel)5))
|
||||
{
|
||||
def.DataAvailable += new DataAvailableHandler(CDataAvail);
|
||||
def.Add(testData);
|
||||
def.Finish();
|
||||
adler1 = def.Checksum;
|
||||
}
|
||||
}
|
||||
#endregion
|
||||
|
||||
#region Inflate tests
|
||||
[Test]
|
||||
public void Inflate_Init()
|
||||
{
|
||||
using (Inflater inf = new Inflater())
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
private void DDataAvail(byte[] data, int startIndex, int count)
|
||||
{
|
||||
for (int i = 0; i < count; ++i)
|
||||
uncompressedData.Add(data[i+startIndex]);
|
||||
}
|
||||
|
||||
[Test]
|
||||
public void Inflate_Expand()
|
||||
{
|
||||
uncompressedData.Clear();
|
||||
|
||||
using (Inflater inf = new Inflater())
|
||||
{
|
||||
inf.DataAvailable += new DataAvailableHandler(DDataAvail);
|
||||
inf.Add((byte[])compressedData.ToArray(typeof(byte)));
|
||||
inf.Finish();
|
||||
adler2 = inf.Checksum;
|
||||
}
|
||||
Assert.AreEqual( adler1, adler2 );
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
|
||||
[TestFixture]
|
||||
public class GZipStreamTests
|
||||
{
|
||||
#region GZipStream test
|
||||
[Test]
|
||||
public void GZipStream_WriteRead()
|
||||
{
|
||||
using (GZipStream gzOut = new GZipStream("gzstream.gz", CompressLevel.Best))
|
||||
{
|
||||
BinaryWriter writer = new BinaryWriter(gzOut);
|
||||
writer.Write("hi there");
|
||||
writer.Write(Math.PI);
|
||||
writer.Write(42);
|
||||
}
|
||||
|
||||
using (GZipStream gzIn = new GZipStream("gzstream.gz"))
|
||||
{
|
||||
BinaryReader reader = new BinaryReader(gzIn);
|
||||
string s = reader.ReadString();
|
||||
Assert.AreEqual("hi there",s);
|
||||
double d = reader.ReadDouble();
|
||||
Assert.AreEqual(Math.PI, d);
|
||||
int i = reader.ReadInt32();
|
||||
Assert.AreEqual(42,i);
|
||||
}
|
||||
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
Boost Software License - Version 1.0 - August 17th, 2003
|
||||
|
||||
Permission is hereby granted, free of charge, to any person or organization
|
||||
obtaining a copy of the software and accompanying documentation covered by
|
||||
this license (the "Software") to use, reproduce, display, distribute,
|
||||
execute, and transmit the Software, and to prepare derivative works of the
|
||||
Software, and to permit third-parties to whom the Software is furnished to
|
||||
do so, all subject to the following:
|
||||
|
||||
The copyright notices in the Software and this entire statement, including
|
||||
the above license grant, this restriction and the following disclaimer,
|
||||
must be included in all copies of the Software, in whole or in part, and
|
||||
all derivative works of the Software, unless such copies or derivative
|
||||
works are solely in the form of machine-executable object code generated by
|
||||
a source language processor.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
||||
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
||||
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
||||
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||
DEALINGS IN THE SOFTWARE.
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
This directory contains a .Net wrapper class library for the ZLib1.dll
|
||||
|
||||
The wrapper includes support for inflating/deflating memory buffers,
|
||||
.Net streaming wrappers for the gz streams part of zlib, and wrappers
|
||||
for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples.
|
||||
|
||||
Directory structure:
|
||||
--------------------
|
||||
|
||||
LICENSE_1_0.txt - License file.
|
||||
readme.txt - This file.
|
||||
DotZLib.chm - Class library documentation
|
||||
DotZLib.build - NAnt build file
|
||||
DotZLib.sln - Microsoft Visual Studio 2003 solution file
|
||||
|
||||
DotZLib\*.cs - Source files for the class library
|
||||
|
||||
Unit tests:
|
||||
-----------
|
||||
The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher.
|
||||
To include unit tests in the build, define nunit before building.
|
||||
|
||||
|
||||
Build instructions:
|
||||
-------------------
|
||||
|
||||
1. Using Visual Studio.Net 2003:
|
||||
Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll)
|
||||
will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on
|
||||
you are building the release or debug version of the library. Check
|
||||
DotZLib/UnitTests.cs for instructions on how to include unit tests in the
|
||||
build.
|
||||
|
||||
2. Using NAnt:
|
||||
Open a command prompt with access to the build environment and run nant
|
||||
in the same directory as the DotZLib.build file.
|
||||
You can define 2 properties on the nant command-line to control the build:
|
||||
debug={true|false} to toggle between release/debug builds (default=true).
|
||||
nunit={true|false} to include or esclude unit tests (default=true).
|
||||
Also the target clean will remove binaries.
|
||||
Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release
|
||||
or ./DotZLib/bin/debug, depending on whether you are building the release
|
||||
or debug version of the library.
|
||||
|
||||
Examples:
|
||||
nant -D:debug=false -D:nunit=false
|
||||
will build a release mode version of the library without unit tests.
|
||||
nant
|
||||
will build a debug version of the library with unit tests
|
||||
nant clean
|
||||
will remove all previously built files.
|
||||
|
||||
|
||||
---------------------------------
|
||||
Copyright (c) Henrik Ravn 2004
|
||||
|
||||
Use, modification and distribution are subject to the Boost Software License, Version 1.0.
|
||||
(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||||
|
|
@ -0,0 +1,574 @@
|
|||
/*
|
||||
;uInt longest_match_x64(
|
||||
; deflate_state *s,
|
||||
; IPos cur_match); // current match
|
||||
|
||||
; gvmat64.S -- Asm portion of the optimized longest_match for 32 bits x86_64
|
||||
; (AMD64 on Athlon 64, Opteron, Phenom
|
||||
; and Intel EM64T on Pentium 4 with EM64T, Pentium D, Core 2 Duo, Core I5/I7)
|
||||
; this file is translation from gvmat64.asm to GCC 4.x (for Linux, Mac XCode)
|
||||
; Copyright (C) 1995-2010 Jean-loup Gailly, Brian Raiter and Gilles Vollant.
|
||||
;
|
||||
; File written by Gilles Vollant, by converting to assembly the longest_match
|
||||
; from Jean-loup Gailly in deflate.c of zLib and infoZip zip.
|
||||
; and by taking inspiration on asm686 with masm, optimised assembly code
|
||||
; from Brian Raiter, written 1998
|
||||
;
|
||||
; This software is provided 'as-is', without any express or implied
|
||||
; warranty. In no event will the authors be held liable for any damages
|
||||
; arising from the use of this software.
|
||||
;
|
||||
; Permission is granted to anyone to use this software for any purpose,
|
||||
; including commercial applications, and to alter it and redistribute it
|
||||
; freely, subject to the following restrictions:
|
||||
;
|
||||
; 1. The origin of this software must not be misrepresented; you must not
|
||||
; claim that you wrote the original software. If you use this software
|
||||
; in a product, an acknowledgment in the product documentation would be
|
||||
; appreciated but is not required.
|
||||
; 2. Altered source versions must be plainly marked as such, and must not be
|
||||
; misrepresented as being the original software
|
||||
; 3. This notice may not be removed or altered from any source distribution.
|
||||
;
|
||||
; http://www.zlib.net
|
||||
; http://www.winimage.com/zLibDll
|
||||
; http://www.muppetlabs.com/~breadbox/software/assembly.html
|
||||
;
|
||||
; to compile this file for zLib, I use option:
|
||||
; gcc -c -arch x86_64 gvmat64.S
|
||||
|
||||
|
||||
;uInt longest_match(s, cur_match)
|
||||
; deflate_state *s;
|
||||
; IPos cur_match; // current match /
|
||||
;
|
||||
; with XCode for Mac, I had strange error with some jump on intel syntax
|
||||
; this is why BEFORE_JMP and AFTER_JMP are used
|
||||
*/
|
||||
|
||||
|
||||
#define BEFORE_JMP .att_syntax
|
||||
#define AFTER_JMP .intel_syntax noprefix
|
||||
|
||||
#ifndef NO_UNDERLINE
|
||||
# define match_init _match_init
|
||||
# define longest_match _longest_match
|
||||
#endif
|
||||
|
||||
.intel_syntax noprefix
|
||||
|
||||
.globl match_init, longest_match
|
||||
.text
|
||||
longest_match:
|
||||
|
||||
|
||||
|
||||
#define LocalVarsSize 96
|
||||
/*
|
||||
; register used : rax,rbx,rcx,rdx,rsi,rdi,r8,r9,r10,r11,r12
|
||||
; free register : r14,r15
|
||||
; register can be saved : rsp
|
||||
*/
|
||||
|
||||
#define chainlenwmask (rsp + 8 - LocalVarsSize)
|
||||
#define nicematch (rsp + 16 - LocalVarsSize)
|
||||
|
||||
#define save_rdi (rsp + 24 - LocalVarsSize)
|
||||
#define save_rsi (rsp + 32 - LocalVarsSize)
|
||||
#define save_rbx (rsp + 40 - LocalVarsSize)
|
||||
#define save_rbp (rsp + 48 - LocalVarsSize)
|
||||
#define save_r12 (rsp + 56 - LocalVarsSize)
|
||||
#define save_r13 (rsp + 64 - LocalVarsSize)
|
||||
#define save_r14 (rsp + 72 - LocalVarsSize)
|
||||
#define save_r15 (rsp + 80 - LocalVarsSize)
|
||||
|
||||
|
||||
/*
|
||||
; all the +4 offsets are due to the addition of pending_buf_size (in zlib
|
||||
; in the deflate_state structure since the asm code was first written
|
||||
; (if you compile with zlib 1.0.4 or older, remove the +4).
|
||||
; Note : these value are good with a 8 bytes boundary pack structure
|
||||
*/
|
||||
|
||||
#define MAX_MATCH 258
|
||||
#define MIN_MATCH 3
|
||||
#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
|
||||
|
||||
/*
|
||||
;;; Offsets for fields in the deflate_state structure. These numbers
|
||||
;;; are calculated from the definition of deflate_state, with the
|
||||
;;; assumption that the compiler will dword-align the fields. (Thus,
|
||||
;;; changing the definition of deflate_state could easily cause this
|
||||
;;; program to crash horribly, without so much as a warning at
|
||||
;;; compile time. Sigh.)
|
||||
|
||||
; all the +zlib1222add offsets are due to the addition of fields
|
||||
; in zlib in the deflate_state structure since the asm code was first written
|
||||
; (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
|
||||
; (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
|
||||
; if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
|
||||
*/
|
||||
|
||||
|
||||
|
||||
/* you can check the structure offset by running
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include "deflate.h"
|
||||
|
||||
void print_depl()
|
||||
{
|
||||
deflate_state ds;
|
||||
deflate_state *s=&ds;
|
||||
printf("size pointer=%u\n",(int)sizeof(void*));
|
||||
|
||||
printf("#define dsWSize %u\n",(int)(((char*)&(s->w_size))-((char*)s)));
|
||||
printf("#define dsWMask %u\n",(int)(((char*)&(s->w_mask))-((char*)s)));
|
||||
printf("#define dsWindow %u\n",(int)(((char*)&(s->window))-((char*)s)));
|
||||
printf("#define dsPrev %u\n",(int)(((char*)&(s->prev))-((char*)s)));
|
||||
printf("#define dsMatchLen %u\n",(int)(((char*)&(s->match_length))-((char*)s)));
|
||||
printf("#define dsPrevMatch %u\n",(int)(((char*)&(s->prev_match))-((char*)s)));
|
||||
printf("#define dsStrStart %u\n",(int)(((char*)&(s->strstart))-((char*)s)));
|
||||
printf("#define dsMatchStart %u\n",(int)(((char*)&(s->match_start))-((char*)s)));
|
||||
printf("#define dsLookahead %u\n",(int)(((char*)&(s->lookahead))-((char*)s)));
|
||||
printf("#define dsPrevLen %u\n",(int)(((char*)&(s->prev_length))-((char*)s)));
|
||||
printf("#define dsMaxChainLen %u\n",(int)(((char*)&(s->max_chain_length))-((char*)s)));
|
||||
printf("#define dsGoodMatch %u\n",(int)(((char*)&(s->good_match))-((char*)s)));
|
||||
printf("#define dsNiceMatch %u\n",(int)(((char*)&(s->nice_match))-((char*)s)));
|
||||
}
|
||||
*/
|
||||
|
||||
#define dsWSize 68
|
||||
#define dsWMask 76
|
||||
#define dsWindow 80
|
||||
#define dsPrev 96
|
||||
#define dsMatchLen 144
|
||||
#define dsPrevMatch 148
|
||||
#define dsStrStart 156
|
||||
#define dsMatchStart 160
|
||||
#define dsLookahead 164
|
||||
#define dsPrevLen 168
|
||||
#define dsMaxChainLen 172
|
||||
#define dsGoodMatch 188
|
||||
#define dsNiceMatch 192
|
||||
|
||||
#define window_size [ rcx + dsWSize]
|
||||
#define WMask [ rcx + dsWMask]
|
||||
#define window_ad [ rcx + dsWindow]
|
||||
#define prev_ad [ rcx + dsPrev]
|
||||
#define strstart [ rcx + dsStrStart]
|
||||
#define match_start [ rcx + dsMatchStart]
|
||||
#define Lookahead [ rcx + dsLookahead] //; 0ffffffffh on infozip
|
||||
#define prev_length [ rcx + dsPrevLen]
|
||||
#define max_chain_length [ rcx + dsMaxChainLen]
|
||||
#define good_match [ rcx + dsGoodMatch]
|
||||
#define nice_match [ rcx + dsNiceMatch]
|
||||
|
||||
/*
|
||||
; windows:
|
||||
; parameter 1 in rcx(deflate state s), param 2 in rdx (cur match)
|
||||
|
||||
; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and
|
||||
; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
|
||||
;
|
||||
; All registers must be preserved across the call, except for
|
||||
; rax, rcx, rdx, r8, r9, r10, and r11, which are scratch.
|
||||
|
||||
;
|
||||
; gcc on macosx-linux:
|
||||
; see http://www.x86-64.org/documentation/abi-0.99.pdf
|
||||
; param 1 in rdi, param 2 in rsi
|
||||
; rbx, rsp, rbp, r12 to r15 must be preserved
|
||||
|
||||
;;; Save registers that the compiler may be using, and adjust esp to
|
||||
;;; make room for our stack frame.
|
||||
|
||||
|
||||
;;; Retrieve the function arguments. r8d will hold cur_match
|
||||
;;; throughout the entire function. edx will hold the pointer to the
|
||||
;;; deflate_state structure during the function's setup (before
|
||||
;;; entering the main loop.
|
||||
|
||||
; ms: parameter 1 in rcx (deflate_state* s), param 2 in edx -> r8 (cur match)
|
||||
; mac: param 1 in rdi, param 2 rsi
|
||||
; this clear high 32 bits of r8, which can be garbage in both r8 and rdx
|
||||
*/
|
||||
mov [save_rbx],rbx
|
||||
mov [save_rbp],rbp
|
||||
|
||||
|
||||
mov rcx,rdi
|
||||
|
||||
mov r8d,esi
|
||||
|
||||
|
||||
mov [save_r12],r12
|
||||
mov [save_r13],r13
|
||||
mov [save_r14],r14
|
||||
mov [save_r15],r15
|
||||
|
||||
|
||||
//;;; uInt wmask = s->w_mask;
|
||||
//;;; unsigned chain_length = s->max_chain_length;
|
||||
//;;; if (s->prev_length >= s->good_match) {
|
||||
//;;; chain_length >>= 2;
|
||||
//;;; }
|
||||
|
||||
|
||||
mov edi, prev_length
|
||||
mov esi, good_match
|
||||
mov eax, WMask
|
||||
mov ebx, max_chain_length
|
||||
cmp edi, esi
|
||||
jl LastMatchGood
|
||||
shr ebx, 2
|
||||
LastMatchGood:
|
||||
|
||||
//;;; chainlen is decremented once beforehand so that the function can
|
||||
//;;; use the sign flag instead of the zero flag for the exit test.
|
||||
//;;; It is then shifted into the high word, to make room for the wmask
|
||||
//;;; value, which it will always accompany.
|
||||
|
||||
dec ebx
|
||||
shl ebx, 16
|
||||
or ebx, eax
|
||||
|
||||
//;;; on zlib only
|
||||
//;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
|
||||
|
||||
|
||||
|
||||
mov eax, nice_match
|
||||
mov [chainlenwmask], ebx
|
||||
mov r10d, Lookahead
|
||||
cmp r10d, eax
|
||||
cmovnl r10d, eax
|
||||
mov [nicematch],r10d
|
||||
|
||||
|
||||
|
||||
//;;; register Bytef *scan = s->window + s->strstart;
|
||||
mov r10, window_ad
|
||||
mov ebp, strstart
|
||||
lea r13, [r10 + rbp]
|
||||
|
||||
//;;; Determine how many bytes the scan ptr is off from being
|
||||
//;;; dword-aligned.
|
||||
|
||||
mov r9,r13
|
||||
neg r13
|
||||
and r13,3
|
||||
|
||||
//;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
|
||||
//;;; s->strstart - (IPos)MAX_DIST(s) : NIL;
|
||||
|
||||
|
||||
mov eax, window_size
|
||||
sub eax, MIN_LOOKAHEAD
|
||||
|
||||
|
||||
xor edi,edi
|
||||
sub ebp, eax
|
||||
|
||||
mov r11d, prev_length
|
||||
|
||||
cmovng ebp,edi
|
||||
|
||||
//;;; int best_len = s->prev_length;
|
||||
|
||||
|
||||
//;;; Store the sum of s->window + best_len in esi locally, and in esi.
|
||||
|
||||
lea rsi,[r10+r11]
|
||||
|
||||
//;;; register ush scan_start = *(ushf*)scan;
|
||||
//;;; register ush scan_end = *(ushf*)(scan+best_len-1);
|
||||
//;;; Posf *prev = s->prev;
|
||||
|
||||
movzx r12d,word ptr [r9]
|
||||
movzx ebx, word ptr [r9 + r11 - 1]
|
||||
|
||||
mov rdi, prev_ad
|
||||
|
||||
//;;; Jump into the main loop.
|
||||
|
||||
mov edx, [chainlenwmask]
|
||||
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
jz LookupLoopIsZero
|
||||
|
||||
|
||||
|
||||
LookupLoop1:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
jbe LeaveNow
|
||||
|
||||
|
||||
|
||||
sub edx, 0x00010000
|
||||
BEFORE_JMP
|
||||
js LeaveNow
|
||||
AFTER_JMP
|
||||
|
||||
LoopEntry1:
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
BEFORE_JMP
|
||||
jz LookupLoopIsZero
|
||||
AFTER_JMP
|
||||
|
||||
LookupLoop2:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
BEFORE_JMP
|
||||
jbe LeaveNow
|
||||
AFTER_JMP
|
||||
sub edx, 0x00010000
|
||||
BEFORE_JMP
|
||||
js LeaveNow
|
||||
AFTER_JMP
|
||||
|
||||
LoopEntry2:
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
BEFORE_JMP
|
||||
jz LookupLoopIsZero
|
||||
AFTER_JMP
|
||||
|
||||
LookupLoop4:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
BEFORE_JMP
|
||||
jbe LeaveNow
|
||||
AFTER_JMP
|
||||
sub edx, 0x00010000
|
||||
BEFORE_JMP
|
||||
js LeaveNow
|
||||
AFTER_JMP
|
||||
|
||||
LoopEntry4:
|
||||
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
BEFORE_JMP
|
||||
jnz LookupLoop1
|
||||
jmp LookupLoopIsZero
|
||||
AFTER_JMP
|
||||
/*
|
||||
;;; do {
|
||||
;;; match = s->window + cur_match;
|
||||
;;; if (*(ushf*)(match+best_len-1) != scan_end ||
|
||||
;;; *(ushf*)match != scan_start) continue;
|
||||
;;; [...]
|
||||
;;; } while ((cur_match = prev[cur_match & wmask]) > limit
|
||||
;;; && --chain_length != 0);
|
||||
;;;
|
||||
;;; Here is the inner loop of the function. The function will spend the
|
||||
;;; majority of its time in this loop, and majority of that time will
|
||||
;;; be spent in the first ten instructions.
|
||||
;;;
|
||||
;;; Within this loop:
|
||||
;;; ebx = scanend
|
||||
;;; r8d = curmatch
|
||||
;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
|
||||
;;; esi = windowbestlen - i.e., (window + bestlen)
|
||||
;;; edi = prev
|
||||
;;; ebp = limit
|
||||
*/
|
||||
.balign 16
|
||||
LookupLoop:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
BEFORE_JMP
|
||||
jbe LeaveNow
|
||||
AFTER_JMP
|
||||
sub edx, 0x00010000
|
||||
BEFORE_JMP
|
||||
js LeaveNow
|
||||
AFTER_JMP
|
||||
|
||||
LoopEntry:
|
||||
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
BEFORE_JMP
|
||||
jnz LookupLoop1
|
||||
AFTER_JMP
|
||||
LookupLoopIsZero:
|
||||
cmp r12w, word ptr [r10 + r8]
|
||||
BEFORE_JMP
|
||||
jnz LookupLoop1
|
||||
AFTER_JMP
|
||||
|
||||
|
||||
//;;; Store the current value of chainlen.
|
||||
mov [chainlenwmask], edx
|
||||
/*
|
||||
;;; Point edi to the string under scrutiny, and esi to the string we
|
||||
;;; are hoping to match it up with. In actuality, esi and edi are
|
||||
;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is
|
||||
;;; initialized to -(MAX_MATCH_8 - scanalign).
|
||||
*/
|
||||
lea rsi,[r8+r10]
|
||||
mov rdx, 0xfffffffffffffef8 //; -(MAX_MATCH_8)
|
||||
lea rsi, [rsi + r13 + 0x0108] //;MAX_MATCH_8]
|
||||
lea rdi, [r9 + r13 + 0x0108] //;MAX_MATCH_8]
|
||||
|
||||
prefetcht1 [rsi+rdx]
|
||||
prefetcht1 [rdi+rdx]
|
||||
|
||||
/*
|
||||
;;; Test the strings for equality, 8 bytes at a time. At the end,
|
||||
;;; adjust rdx so that it is offset to the exact byte that mismatched.
|
||||
;;;
|
||||
;;; We already know at this point that the first three bytes of the
|
||||
;;; strings match each other, and they can be safely passed over before
|
||||
;;; starting the compare loop. So what this code does is skip over 0-3
|
||||
;;; bytes, as much as necessary in order to dword-align the edi
|
||||
;;; pointer. (rsi will still be misaligned three times out of four.)
|
||||
;;;
|
||||
;;; It should be confessed that this loop usually does not represent
|
||||
;;; much of the total running time. Replacing it with a more
|
||||
;;; straightforward "rep cmpsb" would not drastically degrade
|
||||
;;; performance.
|
||||
*/
|
||||
|
||||
LoopCmps:
|
||||
mov rax, [rsi + rdx]
|
||||
xor rax, [rdi + rdx]
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
mov rax, [rsi + rdx + 8]
|
||||
xor rax, [rdi + rdx + 8]
|
||||
jnz LeaveLoopCmps8
|
||||
|
||||
|
||||
mov rax, [rsi + rdx + 8+8]
|
||||
xor rax, [rdi + rdx + 8+8]
|
||||
jnz LeaveLoopCmps16
|
||||
|
||||
add rdx,8+8+8
|
||||
|
||||
BEFORE_JMP
|
||||
jnz LoopCmps
|
||||
jmp LenMaximum
|
||||
AFTER_JMP
|
||||
|
||||
LeaveLoopCmps16: add rdx,8
|
||||
LeaveLoopCmps8: add rdx,8
|
||||
LeaveLoopCmps:
|
||||
|
||||
test eax, 0x0000FFFF
|
||||
jnz LenLower
|
||||
|
||||
test eax,0xffffffff
|
||||
|
||||
jnz LenLower32
|
||||
|
||||
add rdx,4
|
||||
shr rax,32
|
||||
or ax,ax
|
||||
BEFORE_JMP
|
||||
jnz LenLower
|
||||
AFTER_JMP
|
||||
|
||||
LenLower32:
|
||||
shr eax,16
|
||||
add rdx,2
|
||||
|
||||
LenLower:
|
||||
sub al, 1
|
||||
adc rdx, 0
|
||||
//;;; Calculate the length of the match. If it is longer than MAX_MATCH,
|
||||
//;;; then automatically accept it as the best possible match and leave.
|
||||
|
||||
lea rax, [rdi + rdx]
|
||||
sub rax, r9
|
||||
cmp eax, MAX_MATCH
|
||||
BEFORE_JMP
|
||||
jge LenMaximum
|
||||
AFTER_JMP
|
||||
/*
|
||||
;;; If the length of the match is not longer than the best match we
|
||||
;;; have so far, then forget it and return to the lookup loop.
|
||||
;///////////////////////////////////
|
||||
*/
|
||||
cmp eax, r11d
|
||||
jg LongerMatch
|
||||
|
||||
lea rsi,[r10+r11]
|
||||
|
||||
mov rdi, prev_ad
|
||||
mov edx, [chainlenwmask]
|
||||
BEFORE_JMP
|
||||
jmp LookupLoop
|
||||
AFTER_JMP
|
||||
/*
|
||||
;;; s->match_start = cur_match;
|
||||
;;; best_len = len;
|
||||
;;; if (len >= nice_match) break;
|
||||
;;; scan_end = *(ushf*)(scan+best_len-1);
|
||||
*/
|
||||
LongerMatch:
|
||||
mov r11d, eax
|
||||
mov match_start, r8d
|
||||
cmp eax, [nicematch]
|
||||
BEFORE_JMP
|
||||
jge LeaveNow
|
||||
AFTER_JMP
|
||||
|
||||
lea rsi,[r10+rax]
|
||||
|
||||
movzx ebx, word ptr [r9 + rax - 1]
|
||||
mov rdi, prev_ad
|
||||
mov edx, [chainlenwmask]
|
||||
BEFORE_JMP
|
||||
jmp LookupLoop
|
||||
AFTER_JMP
|
||||
|
||||
//;;; Accept the current string, with the maximum possible length.
|
||||
|
||||
LenMaximum:
|
||||
mov r11d,MAX_MATCH
|
||||
mov match_start, r8d
|
||||
|
||||
//;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
|
||||
//;;; return s->lookahead;
|
||||
|
||||
LeaveNow:
|
||||
mov eax, Lookahead
|
||||
cmp r11d, eax
|
||||
cmovng eax, r11d
|
||||
|
||||
|
||||
|
||||
//;;; Restore the stack and return from whence we came.
|
||||
|
||||
|
||||
// mov rsi,[save_rsi]
|
||||
// mov rdi,[save_rdi]
|
||||
mov rbx,[save_rbx]
|
||||
mov rbp,[save_rbp]
|
||||
mov r12,[save_r12]
|
||||
mov r13,[save_r13]
|
||||
mov r14,[save_r14]
|
||||
mov r15,[save_r15]
|
||||
|
||||
|
||||
ret 0
|
||||
//; please don't remove this string !
|
||||
//; Your can freely use gvmat64 in any free or commercial app
|
||||
//; but it is far better don't remove the string in the binary!
|
||||
// db 0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998, converted to amd 64 by Gilles Vollant 2005",0dh,0ah,0
|
||||
|
||||
|
||||
match_init:
|
||||
ret 0
|
||||
|
||||
|
||||
|
|
@ -0,0 +1 @@
|
|||
See infback9.h for what this is and how to use it.
|
||||
|
|
@ -0,0 +1,615 @@
|
|||
/* infback9.c -- inflate deflate64 data using a call-back interface
|
||||
* Copyright (C) 1995-2008 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "infback9.h"
|
||||
#include "inftree9.h"
|
||||
#include "inflate9.h"
|
||||
|
||||
#define WSIZE 65536UL
|
||||
|
||||
/*
|
||||
strm provides memory allocation functions in zalloc and zfree, or
|
||||
Z_NULL to use the library memory allocation functions.
|
||||
|
||||
window is a user-supplied window and output buffer that is 64K bytes.
|
||||
*/
|
||||
int ZEXPORT inflateBack9Init_(strm, window, version, stream_size)
|
||||
z_stream FAR *strm;
|
||||
unsigned char FAR *window;
|
||||
const char *version;
|
||||
int stream_size;
|
||||
{
|
||||
struct inflate_state FAR *state;
|
||||
|
||||
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
|
||||
stream_size != (int)(sizeof(z_stream)))
|
||||
return Z_VERSION_ERROR;
|
||||
if (strm == Z_NULL || window == Z_NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
strm->msg = Z_NULL; /* in case we return an error */
|
||||
if (strm->zalloc == (alloc_func)0) {
|
||||
strm->zalloc = zcalloc;
|
||||
strm->opaque = (voidpf)0;
|
||||
}
|
||||
if (strm->zfree == (free_func)0) strm->zfree = zcfree;
|
||||
state = (struct inflate_state FAR *)ZALLOC(strm, 1,
|
||||
sizeof(struct inflate_state));
|
||||
if (state == Z_NULL) return Z_MEM_ERROR;
|
||||
Tracev((stderr, "inflate: allocated\n"));
|
||||
strm->state = (voidpf)state;
|
||||
state->window = window;
|
||||
return Z_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
Build and output length and distance decoding tables for fixed code
|
||||
decoding.
|
||||
*/
|
||||
#ifdef MAKEFIXED
|
||||
#include <stdio.h>
|
||||
|
||||
void makefixed9(void)
|
||||
{
|
||||
unsigned sym, bits, low, size;
|
||||
code *next, *lenfix, *distfix;
|
||||
struct inflate_state state;
|
||||
code fixed[544];
|
||||
|
||||
/* literal/length table */
|
||||
sym = 0;
|
||||
while (sym < 144) state.lens[sym++] = 8;
|
||||
while (sym < 256) state.lens[sym++] = 9;
|
||||
while (sym < 280) state.lens[sym++] = 7;
|
||||
while (sym < 288) state.lens[sym++] = 8;
|
||||
next = fixed;
|
||||
lenfix = next;
|
||||
bits = 9;
|
||||
inflate_table9(LENS, state.lens, 288, &(next), &(bits), state.work);
|
||||
|
||||
/* distance table */
|
||||
sym = 0;
|
||||
while (sym < 32) state.lens[sym++] = 5;
|
||||
distfix = next;
|
||||
bits = 5;
|
||||
inflate_table9(DISTS, state.lens, 32, &(next), &(bits), state.work);
|
||||
|
||||
/* write tables */
|
||||
puts(" /* inffix9.h -- table for decoding deflate64 fixed codes");
|
||||
puts(" * Generated automatically by makefixed9().");
|
||||
puts(" */");
|
||||
puts("");
|
||||
puts(" /* WARNING: this file should *not* be used by applications.");
|
||||
puts(" It is part of the implementation of this library and is");
|
||||
puts(" subject to change. Applications should only use zlib.h.");
|
||||
puts(" */");
|
||||
puts("");
|
||||
size = 1U << 9;
|
||||
printf(" static const code lenfix[%u] = {", size);
|
||||
low = 0;
|
||||
for (;;) {
|
||||
if ((low % 6) == 0) printf("\n ");
|
||||
printf("{%u,%u,%d}", lenfix[low].op, lenfix[low].bits,
|
||||
lenfix[low].val);
|
||||
if (++low == size) break;
|
||||
putchar(',');
|
||||
}
|
||||
puts("\n };");
|
||||
size = 1U << 5;
|
||||
printf("\n static const code distfix[%u] = {", size);
|
||||
low = 0;
|
||||
for (;;) {
|
||||
if ((low % 5) == 0) printf("\n ");
|
||||
printf("{%u,%u,%d}", distfix[low].op, distfix[low].bits,
|
||||
distfix[low].val);
|
||||
if (++low == size) break;
|
||||
putchar(',');
|
||||
}
|
||||
puts("\n };");
|
||||
}
|
||||
#endif /* MAKEFIXED */
|
||||
|
||||
/* Macros for inflateBack(): */
|
||||
|
||||
/* Clear the input bit accumulator */
|
||||
#define INITBITS() \
|
||||
do { \
|
||||
hold = 0; \
|
||||
bits = 0; \
|
||||
} while (0)
|
||||
|
||||
/* Assure that some input is available. If input is requested, but denied,
|
||||
then return a Z_BUF_ERROR from inflateBack(). */
|
||||
#define PULL() \
|
||||
do { \
|
||||
if (have == 0) { \
|
||||
have = in(in_desc, &next); \
|
||||
if (have == 0) { \
|
||||
next = Z_NULL; \
|
||||
ret = Z_BUF_ERROR; \
|
||||
goto inf_leave; \
|
||||
} \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
/* Get a byte of input into the bit accumulator, or return from inflateBack()
|
||||
with an error if there is no input available. */
|
||||
#define PULLBYTE() \
|
||||
do { \
|
||||
PULL(); \
|
||||
have--; \
|
||||
hold += (unsigned long)(*next++) << bits; \
|
||||
bits += 8; \
|
||||
} while (0)
|
||||
|
||||
/* Assure that there are at least n bits in the bit accumulator. If there is
|
||||
not enough available input to do that, then return from inflateBack() with
|
||||
an error. */
|
||||
#define NEEDBITS(n) \
|
||||
do { \
|
||||
while (bits < (unsigned)(n)) \
|
||||
PULLBYTE(); \
|
||||
} while (0)
|
||||
|
||||
/* Return the low n bits of the bit accumulator (n <= 16) */
|
||||
#define BITS(n) \
|
||||
((unsigned)hold & ((1U << (n)) - 1))
|
||||
|
||||
/* Remove n bits from the bit accumulator */
|
||||
#define DROPBITS(n) \
|
||||
do { \
|
||||
hold >>= (n); \
|
||||
bits -= (unsigned)(n); \
|
||||
} while (0)
|
||||
|
||||
/* Remove zero to seven bits as needed to go to a byte boundary */
|
||||
#define BYTEBITS() \
|
||||
do { \
|
||||
hold >>= bits & 7; \
|
||||
bits -= bits & 7; \
|
||||
} while (0)
|
||||
|
||||
/* Assure that some output space is available, by writing out the window
|
||||
if it's full. If the write fails, return from inflateBack() with a
|
||||
Z_BUF_ERROR. */
|
||||
#define ROOM() \
|
||||
do { \
|
||||
if (left == 0) { \
|
||||
put = window; \
|
||||
left = WSIZE; \
|
||||
wrap = 1; \
|
||||
if (out(out_desc, put, (unsigned)left)) { \
|
||||
ret = Z_BUF_ERROR; \
|
||||
goto inf_leave; \
|
||||
} \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
/*
|
||||
strm provides the memory allocation functions and window buffer on input,
|
||||
and provides information on the unused input on return. For Z_DATA_ERROR
|
||||
returns, strm will also provide an error message.
|
||||
|
||||
in() and out() are the call-back input and output functions. When
|
||||
inflateBack() needs more input, it calls in(). When inflateBack() has
|
||||
filled the window with output, or when it completes with data in the
|
||||
window, it calls out() to write out the data. The application must not
|
||||
change the provided input until in() is called again or inflateBack()
|
||||
returns. The application must not change the window/output buffer until
|
||||
inflateBack() returns.
|
||||
|
||||
in() and out() are called with a descriptor parameter provided in the
|
||||
inflateBack() call. This parameter can be a structure that provides the
|
||||
information required to do the read or write, as well as accumulated
|
||||
information on the input and output such as totals and check values.
|
||||
|
||||
in() should return zero on failure. out() should return non-zero on
|
||||
failure. If either in() or out() fails, than inflateBack() returns a
|
||||
Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
|
||||
was in() or out() that caused in the error. Otherwise, inflateBack()
|
||||
returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
|
||||
error, or Z_MEM_ERROR if it could not allocate memory for the state.
|
||||
inflateBack() can also return Z_STREAM_ERROR if the input parameters
|
||||
are not correct, i.e. strm is Z_NULL or the state was not initialized.
|
||||
*/
|
||||
int ZEXPORT inflateBack9(strm, in, in_desc, out, out_desc)
|
||||
z_stream FAR *strm;
|
||||
in_func in;
|
||||
void FAR *in_desc;
|
||||
out_func out;
|
||||
void FAR *out_desc;
|
||||
{
|
||||
struct inflate_state FAR *state;
|
||||
z_const unsigned char FAR *next; /* next input */
|
||||
unsigned char FAR *put; /* next output */
|
||||
unsigned have; /* available input */
|
||||
unsigned long left; /* available output */
|
||||
inflate_mode mode; /* current inflate mode */
|
||||
int lastblock; /* true if processing last block */
|
||||
int wrap; /* true if the window has wrapped */
|
||||
unsigned char FAR *window; /* allocated sliding window, if needed */
|
||||
unsigned long hold; /* bit buffer */
|
||||
unsigned bits; /* bits in bit buffer */
|
||||
unsigned extra; /* extra bits needed */
|
||||
unsigned long length; /* literal or length of data to copy */
|
||||
unsigned long offset; /* distance back to copy string from */
|
||||
unsigned long copy; /* number of stored or match bytes to copy */
|
||||
unsigned char FAR *from; /* where to copy match bytes from */
|
||||
code const FAR *lencode; /* starting table for length/literal codes */
|
||||
code const FAR *distcode; /* starting table for distance codes */
|
||||
unsigned lenbits; /* index bits for lencode */
|
||||
unsigned distbits; /* index bits for distcode */
|
||||
code here; /* current decoding table entry */
|
||||
code last; /* parent table entry */
|
||||
unsigned len; /* length to copy for repeats, bits to drop */
|
||||
int ret; /* return code */
|
||||
static const unsigned short order[19] = /* permutation of code lengths */
|
||||
{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
|
||||
#include "inffix9.h"
|
||||
|
||||
/* Check that the strm exists and that the state was initialized */
|
||||
if (strm == Z_NULL || strm->state == Z_NULL)
|
||||
return Z_STREAM_ERROR;
|
||||
state = (struct inflate_state FAR *)strm->state;
|
||||
|
||||
/* Reset the state */
|
||||
strm->msg = Z_NULL;
|
||||
mode = TYPE;
|
||||
lastblock = 0;
|
||||
wrap = 0;
|
||||
window = state->window;
|
||||
next = strm->next_in;
|
||||
have = next != Z_NULL ? strm->avail_in : 0;
|
||||
hold = 0;
|
||||
bits = 0;
|
||||
put = window;
|
||||
left = WSIZE;
|
||||
lencode = Z_NULL;
|
||||
distcode = Z_NULL;
|
||||
|
||||
/* Inflate until end of block marked as last */
|
||||
for (;;)
|
||||
switch (mode) {
|
||||
case TYPE:
|
||||
/* determine and dispatch block type */
|
||||
if (lastblock) {
|
||||
BYTEBITS();
|
||||
mode = DONE;
|
||||
break;
|
||||
}
|
||||
NEEDBITS(3);
|
||||
lastblock = BITS(1);
|
||||
DROPBITS(1);
|
||||
switch (BITS(2)) {
|
||||
case 0: /* stored block */
|
||||
Tracev((stderr, "inflate: stored block%s\n",
|
||||
lastblock ? " (last)" : ""));
|
||||
mode = STORED;
|
||||
break;
|
||||
case 1: /* fixed block */
|
||||
lencode = lenfix;
|
||||
lenbits = 9;
|
||||
distcode = distfix;
|
||||
distbits = 5;
|
||||
Tracev((stderr, "inflate: fixed codes block%s\n",
|
||||
lastblock ? " (last)" : ""));
|
||||
mode = LEN; /* decode codes */
|
||||
break;
|
||||
case 2: /* dynamic block */
|
||||
Tracev((stderr, "inflate: dynamic codes block%s\n",
|
||||
lastblock ? " (last)" : ""));
|
||||
mode = TABLE;
|
||||
break;
|
||||
case 3:
|
||||
strm->msg = (char *)"invalid block type";
|
||||
mode = BAD;
|
||||
}
|
||||
DROPBITS(2);
|
||||
break;
|
||||
|
||||
case STORED:
|
||||
/* get and verify stored block length */
|
||||
BYTEBITS(); /* go to byte boundary */
|
||||
NEEDBITS(32);
|
||||
if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
|
||||
strm->msg = (char *)"invalid stored block lengths";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
length = (unsigned)hold & 0xffff;
|
||||
Tracev((stderr, "inflate: stored length %lu\n",
|
||||
length));
|
||||
INITBITS();
|
||||
|
||||
/* copy stored block from input to output */
|
||||
while (length != 0) {
|
||||
copy = length;
|
||||
PULL();
|
||||
ROOM();
|
||||
if (copy > have) copy = have;
|
||||
if (copy > left) copy = left;
|
||||
zmemcpy(put, next, copy);
|
||||
have -= copy;
|
||||
next += copy;
|
||||
left -= copy;
|
||||
put += copy;
|
||||
length -= copy;
|
||||
}
|
||||
Tracev((stderr, "inflate: stored end\n"));
|
||||
mode = TYPE;
|
||||
break;
|
||||
|
||||
case TABLE:
|
||||
/* get dynamic table entries descriptor */
|
||||
NEEDBITS(14);
|
||||
state->nlen = BITS(5) + 257;
|
||||
DROPBITS(5);
|
||||
state->ndist = BITS(5) + 1;
|
||||
DROPBITS(5);
|
||||
state->ncode = BITS(4) + 4;
|
||||
DROPBITS(4);
|
||||
if (state->nlen > 286) {
|
||||
strm->msg = (char *)"too many length symbols";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracev((stderr, "inflate: table sizes ok\n"));
|
||||
|
||||
/* get code length code lengths (not a typo) */
|
||||
state->have = 0;
|
||||
while (state->have < state->ncode) {
|
||||
NEEDBITS(3);
|
||||
state->lens[order[state->have++]] = (unsigned short)BITS(3);
|
||||
DROPBITS(3);
|
||||
}
|
||||
while (state->have < 19)
|
||||
state->lens[order[state->have++]] = 0;
|
||||
state->next = state->codes;
|
||||
lencode = (code const FAR *)(state->next);
|
||||
lenbits = 7;
|
||||
ret = inflate_table9(CODES, state->lens, 19, &(state->next),
|
||||
&(lenbits), state->work);
|
||||
if (ret) {
|
||||
strm->msg = (char *)"invalid code lengths set";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracev((stderr, "inflate: code lengths ok\n"));
|
||||
|
||||
/* get length and distance code code lengths */
|
||||
state->have = 0;
|
||||
while (state->have < state->nlen + state->ndist) {
|
||||
for (;;) {
|
||||
here = lencode[BITS(lenbits)];
|
||||
if ((unsigned)(here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
if (here.val < 16) {
|
||||
NEEDBITS(here.bits);
|
||||
DROPBITS(here.bits);
|
||||
state->lens[state->have++] = here.val;
|
||||
}
|
||||
else {
|
||||
if (here.val == 16) {
|
||||
NEEDBITS(here.bits + 2);
|
||||
DROPBITS(here.bits);
|
||||
if (state->have == 0) {
|
||||
strm->msg = (char *)"invalid bit length repeat";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
len = (unsigned)(state->lens[state->have - 1]);
|
||||
copy = 3 + BITS(2);
|
||||
DROPBITS(2);
|
||||
}
|
||||
else if (here.val == 17) {
|
||||
NEEDBITS(here.bits + 3);
|
||||
DROPBITS(here.bits);
|
||||
len = 0;
|
||||
copy = 3 + BITS(3);
|
||||
DROPBITS(3);
|
||||
}
|
||||
else {
|
||||
NEEDBITS(here.bits + 7);
|
||||
DROPBITS(here.bits);
|
||||
len = 0;
|
||||
copy = 11 + BITS(7);
|
||||
DROPBITS(7);
|
||||
}
|
||||
if (state->have + copy > state->nlen + state->ndist) {
|
||||
strm->msg = (char *)"invalid bit length repeat";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
while (copy--)
|
||||
state->lens[state->have++] = (unsigned short)len;
|
||||
}
|
||||
}
|
||||
|
||||
/* handle error breaks in while */
|
||||
if (mode == BAD) break;
|
||||
|
||||
/* check for end-of-block code (better have one) */
|
||||
if (state->lens[256] == 0) {
|
||||
strm->msg = (char *)"invalid code -- missing end-of-block";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
|
||||
/* build code tables -- note: do not change the lenbits or distbits
|
||||
values here (9 and 6) without reading the comments in inftree9.h
|
||||
concerning the ENOUGH constants, which depend on those values */
|
||||
state->next = state->codes;
|
||||
lencode = (code const FAR *)(state->next);
|
||||
lenbits = 9;
|
||||
ret = inflate_table9(LENS, state->lens, state->nlen,
|
||||
&(state->next), &(lenbits), state->work);
|
||||
if (ret) {
|
||||
strm->msg = (char *)"invalid literal/lengths set";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
distcode = (code const FAR *)(state->next);
|
||||
distbits = 6;
|
||||
ret = inflate_table9(DISTS, state->lens + state->nlen,
|
||||
state->ndist, &(state->next), &(distbits),
|
||||
state->work);
|
||||
if (ret) {
|
||||
strm->msg = (char *)"invalid distances set";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracev((stderr, "inflate: codes ok\n"));
|
||||
mode = LEN;
|
||||
|
||||
case LEN:
|
||||
/* get a literal, length, or end-of-block code */
|
||||
for (;;) {
|
||||
here = lencode[BITS(lenbits)];
|
||||
if ((unsigned)(here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
if (here.op && (here.op & 0xf0) == 0) {
|
||||
last = here;
|
||||
for (;;) {
|
||||
here = lencode[last.val +
|
||||
(BITS(last.bits + last.op) >> last.bits)];
|
||||
if ((unsigned)(last.bits + here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
DROPBITS(last.bits);
|
||||
}
|
||||
DROPBITS(here.bits);
|
||||
length = (unsigned)here.val;
|
||||
|
||||
/* process literal */
|
||||
if (here.op == 0) {
|
||||
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
|
||||
"inflate: literal '%c'\n" :
|
||||
"inflate: literal 0x%02x\n", here.val));
|
||||
ROOM();
|
||||
*put++ = (unsigned char)(length);
|
||||
left--;
|
||||
mode = LEN;
|
||||
break;
|
||||
}
|
||||
|
||||
/* process end of block */
|
||||
if (here.op & 32) {
|
||||
Tracevv((stderr, "inflate: end of block\n"));
|
||||
mode = TYPE;
|
||||
break;
|
||||
}
|
||||
|
||||
/* invalid code */
|
||||
if (here.op & 64) {
|
||||
strm->msg = (char *)"invalid literal/length code";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
|
||||
/* length code -- get extra bits, if any */
|
||||
extra = (unsigned)(here.op) & 31;
|
||||
if (extra != 0) {
|
||||
NEEDBITS(extra);
|
||||
length += BITS(extra);
|
||||
DROPBITS(extra);
|
||||
}
|
||||
Tracevv((stderr, "inflate: length %lu\n", length));
|
||||
|
||||
/* get distance code */
|
||||
for (;;) {
|
||||
here = distcode[BITS(distbits)];
|
||||
if ((unsigned)(here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
if ((here.op & 0xf0) == 0) {
|
||||
last = here;
|
||||
for (;;) {
|
||||
here = distcode[last.val +
|
||||
(BITS(last.bits + last.op) >> last.bits)];
|
||||
if ((unsigned)(last.bits + here.bits) <= bits) break;
|
||||
PULLBYTE();
|
||||
}
|
||||
DROPBITS(last.bits);
|
||||
}
|
||||
DROPBITS(here.bits);
|
||||
if (here.op & 64) {
|
||||
strm->msg = (char *)"invalid distance code";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
offset = (unsigned)here.val;
|
||||
|
||||
/* get distance extra bits, if any */
|
||||
extra = (unsigned)(here.op) & 15;
|
||||
if (extra != 0) {
|
||||
NEEDBITS(extra);
|
||||
offset += BITS(extra);
|
||||
DROPBITS(extra);
|
||||
}
|
||||
if (offset > WSIZE - (wrap ? 0: left)) {
|
||||
strm->msg = (char *)"invalid distance too far back";
|
||||
mode = BAD;
|
||||
break;
|
||||
}
|
||||
Tracevv((stderr, "inflate: distance %lu\n", offset));
|
||||
|
||||
/* copy match from window to output */
|
||||
do {
|
||||
ROOM();
|
||||
copy = WSIZE - offset;
|
||||
if (copy < left) {
|
||||
from = put + copy;
|
||||
copy = left - copy;
|
||||
}
|
||||
else {
|
||||
from = put - offset;
|
||||
copy = left;
|
||||
}
|
||||
if (copy > length) copy = length;
|
||||
length -= copy;
|
||||
left -= copy;
|
||||
do {
|
||||
*put++ = *from++;
|
||||
} while (--copy);
|
||||
} while (length != 0);
|
||||
break;
|
||||
|
||||
case DONE:
|
||||
/* inflate stream terminated properly -- write leftover output */
|
||||
ret = Z_STREAM_END;
|
||||
if (left < WSIZE) {
|
||||
if (out(out_desc, window, (unsigned)(WSIZE - left)))
|
||||
ret = Z_BUF_ERROR;
|
||||
}
|
||||
goto inf_leave;
|
||||
|
||||
case BAD:
|
||||
ret = Z_DATA_ERROR;
|
||||
goto inf_leave;
|
||||
|
||||
default: /* can't happen, but makes compilers happy */
|
||||
ret = Z_STREAM_ERROR;
|
||||
goto inf_leave;
|
||||
}
|
||||
|
||||
/* Return unused input */
|
||||
inf_leave:
|
||||
strm->next_in = next;
|
||||
strm->avail_in = have;
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ZEXPORT inflateBack9End(strm)
|
||||
z_stream FAR *strm;
|
||||
{
|
||||
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
|
||||
return Z_STREAM_ERROR;
|
||||
ZFREE(strm, strm->state);
|
||||
strm->state = Z_NULL;
|
||||
Tracev((stderr, "inflate: end\n"));
|
||||
return Z_OK;
|
||||
}
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
/* infback9.h -- header for using inflateBack9 functions
|
||||
* Copyright (C) 2003 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/*
|
||||
* This header file and associated patches provide a decoder for PKWare's
|
||||
* undocumented deflate64 compression method (method 9). Use with infback9.c,
|
||||
* inftree9.h, inftree9.c, and inffix9.h. These patches are not supported.
|
||||
* This should be compiled with zlib, since it uses zutil.h and zutil.o.
|
||||
* This code has not yet been tested on 16-bit architectures. See the
|
||||
* comments in zlib.h for inflateBack() usage. These functions are used
|
||||
* identically, except that there is no windowBits parameter, and a 64K
|
||||
* window must be provided. Also if int's are 16 bits, then a zero for
|
||||
* the third parameter of the "out" function actually means 65536UL.
|
||||
* zlib.h must be included before this header file.
|
||||
*/
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
ZEXTERN int ZEXPORT inflateBack9 OF((z_stream FAR *strm,
|
||||
in_func in, void FAR *in_desc,
|
||||
out_func out, void FAR *out_desc));
|
||||
ZEXTERN int ZEXPORT inflateBack9End OF((z_stream FAR *strm));
|
||||
ZEXTERN int ZEXPORT inflateBack9Init_ OF((z_stream FAR *strm,
|
||||
unsigned char FAR *window,
|
||||
const char *version,
|
||||
int stream_size));
|
||||
#define inflateBack9Init(strm, window) \
|
||||
inflateBack9Init_((strm), (window), \
|
||||
ZLIB_VERSION, sizeof(z_stream))
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
/* inffix9.h -- table for decoding deflate64 fixed codes
|
||||
* Generated automatically by makefixed9().
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications.
|
||||
It is part of the implementation of this library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
static const code lenfix[512] = {
|
||||
{96,7,0},{0,8,80},{0,8,16},{132,8,115},{130,7,31},{0,8,112},
|
||||
{0,8,48},{0,9,192},{128,7,10},{0,8,96},{0,8,32},{0,9,160},
|
||||
{0,8,0},{0,8,128},{0,8,64},{0,9,224},{128,7,6},{0,8,88},
|
||||
{0,8,24},{0,9,144},{131,7,59},{0,8,120},{0,8,56},{0,9,208},
|
||||
{129,7,17},{0,8,104},{0,8,40},{0,9,176},{0,8,8},{0,8,136},
|
||||
{0,8,72},{0,9,240},{128,7,4},{0,8,84},{0,8,20},{133,8,227},
|
||||
{131,7,43},{0,8,116},{0,8,52},{0,9,200},{129,7,13},{0,8,100},
|
||||
{0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},
|
||||
{128,7,8},{0,8,92},{0,8,28},{0,9,152},{132,7,83},{0,8,124},
|
||||
{0,8,60},{0,9,216},{130,7,23},{0,8,108},{0,8,44},{0,9,184},
|
||||
{0,8,12},{0,8,140},{0,8,76},{0,9,248},{128,7,3},{0,8,82},
|
||||
{0,8,18},{133,8,163},{131,7,35},{0,8,114},{0,8,50},{0,9,196},
|
||||
{129,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},{0,8,130},
|
||||
{0,8,66},{0,9,228},{128,7,7},{0,8,90},{0,8,26},{0,9,148},
|
||||
{132,7,67},{0,8,122},{0,8,58},{0,9,212},{130,7,19},{0,8,106},
|
||||
{0,8,42},{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},
|
||||
{128,7,5},{0,8,86},{0,8,22},{65,8,0},{131,7,51},{0,8,118},
|
||||
{0,8,54},{0,9,204},{129,7,15},{0,8,102},{0,8,38},{0,9,172},
|
||||
{0,8,6},{0,8,134},{0,8,70},{0,9,236},{128,7,9},{0,8,94},
|
||||
{0,8,30},{0,9,156},{132,7,99},{0,8,126},{0,8,62},{0,9,220},
|
||||
{130,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
|
||||
{0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{133,8,131},
|
||||
{130,7,31},{0,8,113},{0,8,49},{0,9,194},{128,7,10},{0,8,97},
|
||||
{0,8,33},{0,9,162},{0,8,1},{0,8,129},{0,8,65},{0,9,226},
|
||||
{128,7,6},{0,8,89},{0,8,25},{0,9,146},{131,7,59},{0,8,121},
|
||||
{0,8,57},{0,9,210},{129,7,17},{0,8,105},{0,8,41},{0,9,178},
|
||||
{0,8,9},{0,8,137},{0,8,73},{0,9,242},{128,7,4},{0,8,85},
|
||||
{0,8,21},{144,8,3},{131,7,43},{0,8,117},{0,8,53},{0,9,202},
|
||||
{129,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},
|
||||
{0,8,69},{0,9,234},{128,7,8},{0,8,93},{0,8,29},{0,9,154},
|
||||
{132,7,83},{0,8,125},{0,8,61},{0,9,218},{130,7,23},{0,8,109},
|
||||
{0,8,45},{0,9,186},{0,8,13},{0,8,141},{0,8,77},{0,9,250},
|
||||
{128,7,3},{0,8,83},{0,8,19},{133,8,195},{131,7,35},{0,8,115},
|
||||
{0,8,51},{0,9,198},{129,7,11},{0,8,99},{0,8,35},{0,9,166},
|
||||
{0,8,3},{0,8,131},{0,8,67},{0,9,230},{128,7,7},{0,8,91},
|
||||
{0,8,27},{0,9,150},{132,7,67},{0,8,123},{0,8,59},{0,9,214},
|
||||
{130,7,19},{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},
|
||||
{0,8,75},{0,9,246},{128,7,5},{0,8,87},{0,8,23},{77,8,0},
|
||||
{131,7,51},{0,8,119},{0,8,55},{0,9,206},{129,7,15},{0,8,103},
|
||||
{0,8,39},{0,9,174},{0,8,7},{0,8,135},{0,8,71},{0,9,238},
|
||||
{128,7,9},{0,8,95},{0,8,31},{0,9,158},{132,7,99},{0,8,127},
|
||||
{0,8,63},{0,9,222},{130,7,27},{0,8,111},{0,8,47},{0,9,190},
|
||||
{0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},
|
||||
{0,8,16},{132,8,115},{130,7,31},{0,8,112},{0,8,48},{0,9,193},
|
||||
{128,7,10},{0,8,96},{0,8,32},{0,9,161},{0,8,0},{0,8,128},
|
||||
{0,8,64},{0,9,225},{128,7,6},{0,8,88},{0,8,24},{0,9,145},
|
||||
{131,7,59},{0,8,120},{0,8,56},{0,9,209},{129,7,17},{0,8,104},
|
||||
{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},{0,9,241},
|
||||
{128,7,4},{0,8,84},{0,8,20},{133,8,227},{131,7,43},{0,8,116},
|
||||
{0,8,52},{0,9,201},{129,7,13},{0,8,100},{0,8,36},{0,9,169},
|
||||
{0,8,4},{0,8,132},{0,8,68},{0,9,233},{128,7,8},{0,8,92},
|
||||
{0,8,28},{0,9,153},{132,7,83},{0,8,124},{0,8,60},{0,9,217},
|
||||
{130,7,23},{0,8,108},{0,8,44},{0,9,185},{0,8,12},{0,8,140},
|
||||
{0,8,76},{0,9,249},{128,7,3},{0,8,82},{0,8,18},{133,8,163},
|
||||
{131,7,35},{0,8,114},{0,8,50},{0,9,197},{129,7,11},{0,8,98},
|
||||
{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
|
||||
{128,7,7},{0,8,90},{0,8,26},{0,9,149},{132,7,67},{0,8,122},
|
||||
{0,8,58},{0,9,213},{130,7,19},{0,8,106},{0,8,42},{0,9,181},
|
||||
{0,8,10},{0,8,138},{0,8,74},{0,9,245},{128,7,5},{0,8,86},
|
||||
{0,8,22},{65,8,0},{131,7,51},{0,8,118},{0,8,54},{0,9,205},
|
||||
{129,7,15},{0,8,102},{0,8,38},{0,9,173},{0,8,6},{0,8,134},
|
||||
{0,8,70},{0,9,237},{128,7,9},{0,8,94},{0,8,30},{0,9,157},
|
||||
{132,7,99},{0,8,126},{0,8,62},{0,9,221},{130,7,27},{0,8,110},
|
||||
{0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},
|
||||
{96,7,0},{0,8,81},{0,8,17},{133,8,131},{130,7,31},{0,8,113},
|
||||
{0,8,49},{0,9,195},{128,7,10},{0,8,97},{0,8,33},{0,9,163},
|
||||
{0,8,1},{0,8,129},{0,8,65},{0,9,227},{128,7,6},{0,8,89},
|
||||
{0,8,25},{0,9,147},{131,7,59},{0,8,121},{0,8,57},{0,9,211},
|
||||
{129,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},{0,8,137},
|
||||
{0,8,73},{0,9,243},{128,7,4},{0,8,85},{0,8,21},{144,8,3},
|
||||
{131,7,43},{0,8,117},{0,8,53},{0,9,203},{129,7,13},{0,8,101},
|
||||
{0,8,37},{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},
|
||||
{128,7,8},{0,8,93},{0,8,29},{0,9,155},{132,7,83},{0,8,125},
|
||||
{0,8,61},{0,9,219},{130,7,23},{0,8,109},{0,8,45},{0,9,187},
|
||||
{0,8,13},{0,8,141},{0,8,77},{0,9,251},{128,7,3},{0,8,83},
|
||||
{0,8,19},{133,8,195},{131,7,35},{0,8,115},{0,8,51},{0,9,199},
|
||||
{129,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
|
||||
{0,8,67},{0,9,231},{128,7,7},{0,8,91},{0,8,27},{0,9,151},
|
||||
{132,7,67},{0,8,123},{0,8,59},{0,9,215},{130,7,19},{0,8,107},
|
||||
{0,8,43},{0,9,183},{0,8,11},{0,8,139},{0,8,75},{0,9,247},
|
||||
{128,7,5},{0,8,87},{0,8,23},{77,8,0},{131,7,51},{0,8,119},
|
||||
{0,8,55},{0,9,207},{129,7,15},{0,8,103},{0,8,39},{0,9,175},
|
||||
{0,8,7},{0,8,135},{0,8,71},{0,9,239},{128,7,9},{0,8,95},
|
||||
{0,8,31},{0,9,159},{132,7,99},{0,8,127},{0,8,63},{0,9,223},
|
||||
{130,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},
|
||||
{0,8,79},{0,9,255}
|
||||
};
|
||||
|
||||
static const code distfix[32] = {
|
||||
{128,5,1},{135,5,257},{131,5,17},{139,5,4097},{129,5,5},
|
||||
{137,5,1025},{133,5,65},{141,5,16385},{128,5,3},{136,5,513},
|
||||
{132,5,33},{140,5,8193},{130,5,9},{138,5,2049},{134,5,129},
|
||||
{142,5,32769},{128,5,2},{135,5,385},{131,5,25},{139,5,6145},
|
||||
{129,5,7},{137,5,1537},{133,5,97},{141,5,24577},{128,5,4},
|
||||
{136,5,769},{132,5,49},{140,5,12289},{130,5,13},{138,5,3073},
|
||||
{134,5,193},{142,5,49153}
|
||||
};
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
/* inflate9.h -- internal inflate state definition
|
||||
* Copyright (C) 1995-2003 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
/* Possible inflate modes between inflate() calls */
|
||||
typedef enum {
|
||||
TYPE, /* i: waiting for type bits, including last-flag bit */
|
||||
STORED, /* i: waiting for stored size (length and complement) */
|
||||
TABLE, /* i: waiting for dynamic block table lengths */
|
||||
LEN, /* i: waiting for length/lit code */
|
||||
DONE, /* finished check, done -- remain here until reset */
|
||||
BAD /* got a data error -- remain here until reset */
|
||||
} inflate_mode;
|
||||
|
||||
/*
|
||||
State transitions between above modes -
|
||||
|
||||
(most modes can go to the BAD mode -- not shown for clarity)
|
||||
|
||||
Read deflate blocks:
|
||||
TYPE -> STORED or TABLE or LEN or DONE
|
||||
STORED -> TYPE
|
||||
TABLE -> LENLENS -> CODELENS -> LEN
|
||||
Read deflate codes:
|
||||
LEN -> LEN or TYPE
|
||||
*/
|
||||
|
||||
/* state maintained between inflate() calls. Approximately 7K bytes. */
|
||||
struct inflate_state {
|
||||
/* sliding window */
|
||||
unsigned char FAR *window; /* allocated sliding window, if needed */
|
||||
/* dynamic table building */
|
||||
unsigned ncode; /* number of code length code lengths */
|
||||
unsigned nlen; /* number of length code lengths */
|
||||
unsigned ndist; /* number of distance code lengths */
|
||||
unsigned have; /* number of code lengths in lens[] */
|
||||
code FAR *next; /* next available space in codes[] */
|
||||
unsigned short lens[320]; /* temporary storage for code lengths */
|
||||
unsigned short work[288]; /* work area for code table building */
|
||||
code codes[ENOUGH]; /* space for code tables */
|
||||
};
|
||||
|
|
@ -0,0 +1,324 @@
|
|||
/* inftree9.c -- generate Huffman trees for efficient decoding
|
||||
* Copyright (C) 1995-2013 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
#include "zutil.h"
|
||||
#include "inftree9.h"
|
||||
|
||||
#define MAXBITS 15
|
||||
|
||||
const char inflate9_copyright[] =
|
||||
" inflate9 1.2.8 Copyright 1995-2013 Mark Adler ";
|
||||
/*
|
||||
If you use the zlib library in a product, an acknowledgment is welcome
|
||||
in the documentation of your product. If for some reason you cannot
|
||||
include such an acknowledgment, I would appreciate that you keep this
|
||||
copyright string in the executable of your product.
|
||||
*/
|
||||
|
||||
/*
|
||||
Build a set of tables to decode the provided canonical Huffman code.
|
||||
The code lengths are lens[0..codes-1]. The result starts at *table,
|
||||
whose indices are 0..2^bits-1. work is a writable array of at least
|
||||
lens shorts, which is used as a work area. type is the type of code
|
||||
to be generated, CODES, LENS, or DISTS. On return, zero is success,
|
||||
-1 is an invalid code, and +1 means that ENOUGH isn't enough. table
|
||||
on return points to the next available entry's address. bits is the
|
||||
requested root table index bits, and on return it is the actual root
|
||||
table index bits. It will differ if the request is greater than the
|
||||
longest code or if it is less than the shortest code.
|
||||
*/
|
||||
int inflate_table9(type, lens, codes, table, bits, work)
|
||||
codetype type;
|
||||
unsigned short FAR *lens;
|
||||
unsigned codes;
|
||||
code FAR * FAR *table;
|
||||
unsigned FAR *bits;
|
||||
unsigned short FAR *work;
|
||||
{
|
||||
unsigned len; /* a code's length in bits */
|
||||
unsigned sym; /* index of code symbols */
|
||||
unsigned min, max; /* minimum and maximum code lengths */
|
||||
unsigned root; /* number of index bits for root table */
|
||||
unsigned curr; /* number of index bits for current table */
|
||||
unsigned drop; /* code bits to drop for sub-table */
|
||||
int left; /* number of prefix codes available */
|
||||
unsigned used; /* code entries in table used */
|
||||
unsigned huff; /* Huffman code */
|
||||
unsigned incr; /* for incrementing code, index */
|
||||
unsigned fill; /* index for replicating entries */
|
||||
unsigned low; /* low bits for current root entry */
|
||||
unsigned mask; /* mask for low root bits */
|
||||
code this; /* table entry for duplication */
|
||||
code FAR *next; /* next available space in table */
|
||||
const unsigned short FAR *base; /* base value table to use */
|
||||
const unsigned short FAR *extra; /* extra bits table to use */
|
||||
int end; /* use base and extra for symbol > end */
|
||||
unsigned short count[MAXBITS+1]; /* number of codes of each length */
|
||||
unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
|
||||
static const unsigned short lbase[31] = { /* Length codes 257..285 base */
|
||||
3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17,
|
||||
19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115,
|
||||
131, 163, 195, 227, 3, 0, 0};
|
||||
static const unsigned short lext[31] = { /* Length codes 257..285 extra */
|
||||
128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
|
||||
130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
|
||||
133, 133, 133, 133, 144, 72, 78};
|
||||
static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
|
||||
1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
|
||||
65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
|
||||
4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153};
|
||||
static const unsigned short dext[32] = { /* Distance codes 0..31 extra */
|
||||
128, 128, 128, 128, 129, 129, 130, 130, 131, 131, 132, 132,
|
||||
133, 133, 134, 134, 135, 135, 136, 136, 137, 137, 138, 138,
|
||||
139, 139, 140, 140, 141, 141, 142, 142};
|
||||
|
||||
/*
|
||||
Process a set of code lengths to create a canonical Huffman code. The
|
||||
code lengths are lens[0..codes-1]. Each length corresponds to the
|
||||
symbols 0..codes-1. The Huffman code is generated by first sorting the
|
||||
symbols by length from short to long, and retaining the symbol order
|
||||
for codes with equal lengths. Then the code starts with all zero bits
|
||||
for the first code of the shortest length, and the codes are integer
|
||||
increments for the same length, and zeros are appended as the length
|
||||
increases. For the deflate format, these bits are stored backwards
|
||||
from their more natural integer increment ordering, and so when the
|
||||
decoding tables are built in the large loop below, the integer codes
|
||||
are incremented backwards.
|
||||
|
||||
This routine assumes, but does not check, that all of the entries in
|
||||
lens[] are in the range 0..MAXBITS. The caller must assure this.
|
||||
1..MAXBITS is interpreted as that code length. zero means that that
|
||||
symbol does not occur in this code.
|
||||
|
||||
The codes are sorted by computing a count of codes for each length,
|
||||
creating from that a table of starting indices for each length in the
|
||||
sorted table, and then entering the symbols in order in the sorted
|
||||
table. The sorted table is work[], with that space being provided by
|
||||
the caller.
|
||||
|
||||
The length counts are used for other purposes as well, i.e. finding
|
||||
the minimum and maximum length codes, determining if there are any
|
||||
codes at all, checking for a valid set of lengths, and looking ahead
|
||||
at length counts to determine sub-table sizes when building the
|
||||
decoding tables.
|
||||
*/
|
||||
|
||||
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
|
||||
for (len = 0; len <= MAXBITS; len++)
|
||||
count[len] = 0;
|
||||
for (sym = 0; sym < codes; sym++)
|
||||
count[lens[sym]]++;
|
||||
|
||||
/* bound code lengths, force root to be within code lengths */
|
||||
root = *bits;
|
||||
for (max = MAXBITS; max >= 1; max--)
|
||||
if (count[max] != 0) break;
|
||||
if (root > max) root = max;
|
||||
if (max == 0) return -1; /* no codes! */
|
||||
for (min = 1; min <= MAXBITS; min++)
|
||||
if (count[min] != 0) break;
|
||||
if (root < min) root = min;
|
||||
|
||||
/* check for an over-subscribed or incomplete set of lengths */
|
||||
left = 1;
|
||||
for (len = 1; len <= MAXBITS; len++) {
|
||||
left <<= 1;
|
||||
left -= count[len];
|
||||
if (left < 0) return -1; /* over-subscribed */
|
||||
}
|
||||
if (left > 0 && (type == CODES || max != 1))
|
||||
return -1; /* incomplete set */
|
||||
|
||||
/* generate offsets into symbol table for each length for sorting */
|
||||
offs[1] = 0;
|
||||
for (len = 1; len < MAXBITS; len++)
|
||||
offs[len + 1] = offs[len] + count[len];
|
||||
|
||||
/* sort symbols by length, by symbol order within each length */
|
||||
for (sym = 0; sym < codes; sym++)
|
||||
if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
|
||||
|
||||
/*
|
||||
Create and fill in decoding tables. In this loop, the table being
|
||||
filled is at next and has curr index bits. The code being used is huff
|
||||
with length len. That code is converted to an index by dropping drop
|
||||
bits off of the bottom. For codes where len is less than drop + curr,
|
||||
those top drop + curr - len bits are incremented through all values to
|
||||
fill the table with replicated entries.
|
||||
|
||||
root is the number of index bits for the root table. When len exceeds
|
||||
root, sub-tables are created pointed to by the root entry with an index
|
||||
of the low root bits of huff. This is saved in low to check for when a
|
||||
new sub-table should be started. drop is zero when the root table is
|
||||
being filled, and drop is root when sub-tables are being filled.
|
||||
|
||||
When a new sub-table is needed, it is necessary to look ahead in the
|
||||
code lengths to determine what size sub-table is needed. The length
|
||||
counts are used for this, and so count[] is decremented as codes are
|
||||
entered in the tables.
|
||||
|
||||
used keeps track of how many table entries have been allocated from the
|
||||
provided *table space. It is checked for LENS and DIST tables against
|
||||
the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
|
||||
the initial root table size constants. See the comments in inftree9.h
|
||||
for more information.
|
||||
|
||||
sym increments through all symbols, and the loop terminates when
|
||||
all codes of length max, i.e. all codes, have been processed. This
|
||||
routine permits incomplete codes, so another loop after this one fills
|
||||
in the rest of the decoding tables with invalid code markers.
|
||||
*/
|
||||
|
||||
/* set up for code type */
|
||||
switch (type) {
|
||||
case CODES:
|
||||
base = extra = work; /* dummy value--not used */
|
||||
end = 19;
|
||||
break;
|
||||
case LENS:
|
||||
base = lbase;
|
||||
base -= 257;
|
||||
extra = lext;
|
||||
extra -= 257;
|
||||
end = 256;
|
||||
break;
|
||||
default: /* DISTS */
|
||||
base = dbase;
|
||||
extra = dext;
|
||||
end = -1;
|
||||
}
|
||||
|
||||
/* initialize state for loop */
|
||||
huff = 0; /* starting code */
|
||||
sym = 0; /* starting code symbol */
|
||||
len = min; /* starting code length */
|
||||
next = *table; /* current table to fill in */
|
||||
curr = root; /* current table index bits */
|
||||
drop = 0; /* current bits to drop from code for index */
|
||||
low = (unsigned)(-1); /* trigger new sub-table when len > root */
|
||||
used = 1U << root; /* use root table entries */
|
||||
mask = used - 1; /* mask for comparing low */
|
||||
|
||||
/* check available table space */
|
||||
if ((type == LENS && used >= ENOUGH_LENS) ||
|
||||
(type == DISTS && used >= ENOUGH_DISTS))
|
||||
return 1;
|
||||
|
||||
/* process all codes and make table entries */
|
||||
for (;;) {
|
||||
/* create table entry */
|
||||
this.bits = (unsigned char)(len - drop);
|
||||
if ((int)(work[sym]) < end) {
|
||||
this.op = (unsigned char)0;
|
||||
this.val = work[sym];
|
||||
}
|
||||
else if ((int)(work[sym]) > end) {
|
||||
this.op = (unsigned char)(extra[work[sym]]);
|
||||
this.val = base[work[sym]];
|
||||
}
|
||||
else {
|
||||
this.op = (unsigned char)(32 + 64); /* end of block */
|
||||
this.val = 0;
|
||||
}
|
||||
|
||||
/* replicate for those indices with low len bits equal to huff */
|
||||
incr = 1U << (len - drop);
|
||||
fill = 1U << curr;
|
||||
do {
|
||||
fill -= incr;
|
||||
next[(huff >> drop) + fill] = this;
|
||||
} while (fill != 0);
|
||||
|
||||
/* backwards increment the len-bit code huff */
|
||||
incr = 1U << (len - 1);
|
||||
while (huff & incr)
|
||||
incr >>= 1;
|
||||
if (incr != 0) {
|
||||
huff &= incr - 1;
|
||||
huff += incr;
|
||||
}
|
||||
else
|
||||
huff = 0;
|
||||
|
||||
/* go to next symbol, update count, len */
|
||||
sym++;
|
||||
if (--(count[len]) == 0) {
|
||||
if (len == max) break;
|
||||
len = lens[work[sym]];
|
||||
}
|
||||
|
||||
/* create new sub-table if needed */
|
||||
if (len > root && (huff & mask) != low) {
|
||||
/* if first time, transition to sub-tables */
|
||||
if (drop == 0)
|
||||
drop = root;
|
||||
|
||||
/* increment past last table */
|
||||
next += 1U << curr;
|
||||
|
||||
/* determine length of next table */
|
||||
curr = len - drop;
|
||||
left = (int)(1 << curr);
|
||||
while (curr + drop < max) {
|
||||
left -= count[curr + drop];
|
||||
if (left <= 0) break;
|
||||
curr++;
|
||||
left <<= 1;
|
||||
}
|
||||
|
||||
/* check for enough space */
|
||||
used += 1U << curr;
|
||||
if ((type == LENS && used >= ENOUGH_LENS) ||
|
||||
(type == DISTS && used >= ENOUGH_DISTS))
|
||||
return 1;
|
||||
|
||||
/* point entry in root table to sub-table */
|
||||
low = huff & mask;
|
||||
(*table)[low].op = (unsigned char)curr;
|
||||
(*table)[low].bits = (unsigned char)root;
|
||||
(*table)[low].val = (unsigned short)(next - *table);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
Fill in rest of table for incomplete codes. This loop is similar to the
|
||||
loop above in incrementing huff for table indices. It is assumed that
|
||||
len is equal to curr + drop, so there is no loop needed to increment
|
||||
through high index bits. When the current sub-table is filled, the loop
|
||||
drops back to the root table to fill in any remaining entries there.
|
||||
*/
|
||||
this.op = (unsigned char)64; /* invalid code marker */
|
||||
this.bits = (unsigned char)(len - drop);
|
||||
this.val = (unsigned short)0;
|
||||
while (huff != 0) {
|
||||
/* when done with sub-table, drop back to root table */
|
||||
if (drop != 0 && (huff & mask) != low) {
|
||||
drop = 0;
|
||||
len = root;
|
||||
next = *table;
|
||||
curr = root;
|
||||
this.bits = (unsigned char)len;
|
||||
}
|
||||
|
||||
/* put invalid code marker in table */
|
||||
next[huff >> drop] = this;
|
||||
|
||||
/* backwards increment the len-bit code huff */
|
||||
incr = 1U << (len - 1);
|
||||
while (huff & incr)
|
||||
incr >>= 1;
|
||||
if (incr != 0) {
|
||||
huff &= incr - 1;
|
||||
huff += incr;
|
||||
}
|
||||
else
|
||||
huff = 0;
|
||||
}
|
||||
|
||||
/* set return parameters */
|
||||
*table += used;
|
||||
*bits = root;
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,61 @@
|
|||
/* inftree9.h -- header to use inftree9.c
|
||||
* Copyright (C) 1995-2008 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*/
|
||||
|
||||
/* WARNING: this file should *not* be used by applications. It is
|
||||
part of the implementation of the compression library and is
|
||||
subject to change. Applications should only use zlib.h.
|
||||
*/
|
||||
|
||||
/* Structure for decoding tables. Each entry provides either the
|
||||
information needed to do the operation requested by the code that
|
||||
indexed that table entry, or it provides a pointer to another
|
||||
table that indexes more bits of the code. op indicates whether
|
||||
the entry is a pointer to another table, a literal, a length or
|
||||
distance, an end-of-block, or an invalid code. For a table
|
||||
pointer, the low four bits of op is the number of index bits of
|
||||
that table. For a length or distance, the low four bits of op
|
||||
is the number of extra bits to get after the code. bits is
|
||||
the number of bits in this code or part of the code to drop off
|
||||
of the bit buffer. val is the actual byte to output in the case
|
||||
of a literal, the base length or distance, or the offset from
|
||||
the current table to the next table. Each entry is four bytes. */
|
||||
typedef struct {
|
||||
unsigned char op; /* operation, extra bits, table bits */
|
||||
unsigned char bits; /* bits in this part of the code */
|
||||
unsigned short val; /* offset in table or code value */
|
||||
} code;
|
||||
|
||||
/* op values as set by inflate_table():
|
||||
00000000 - literal
|
||||
0000tttt - table link, tttt != 0 is the number of table index bits
|
||||
100eeeee - length or distance, eeee is the number of extra bits
|
||||
01100000 - end of block
|
||||
01000000 - invalid code
|
||||
*/
|
||||
|
||||
/* Maximum size of the dynamic table. The maximum number of code structures is
|
||||
1446, which is the sum of 852 for literal/length codes and 594 for distance
|
||||
codes. These values were found by exhaustive searches using the program
|
||||
examples/enough.c found in the zlib distribtution. The arguments to that
|
||||
program are the number of symbols, the initial root table size, and the
|
||||
maximum bit length of a code. "enough 286 9 15" for literal/length codes
|
||||
returns returns 852, and "enough 32 6 15" for distance codes returns 594.
|
||||
The initial root table size (9 or 6) is found in the fifth argument of the
|
||||
inflate_table() calls in infback9.c. If the root table size is changed,
|
||||
then these maximum sizes would be need to be recalculated and updated. */
|
||||
#define ENOUGH_LENS 852
|
||||
#define ENOUGH_DISTS 594
|
||||
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
|
||||
|
||||
/* Type of code to build for inflate_table9() */
|
||||
typedef enum {
|
||||
CODES,
|
||||
LENS,
|
||||
DISTS
|
||||
} codetype;
|
||||
|
||||
extern int inflate_table9 OF((codetype type, unsigned short FAR *lens,
|
||||
unsigned codes, code FAR * FAR *table,
|
||||
unsigned FAR *bits, unsigned short FAR *work));
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,24 @@
|
|||
|
||||
#include "zfstream.h"
|
||||
|
||||
int main() {
|
||||
|
||||
// Construct a stream object with this filebuffer. Anything sent
|
||||
// to this stream will go to standard out.
|
||||
gzofstream os( 1, ios::out );
|
||||
|
||||
// This text is getting compressed and sent to stdout.
|
||||
// To prove this, run 'test | zcat'.
|
||||
os << "Hello, Mommy" << endl;
|
||||
|
||||
os << setcompressionlevel( Z_NO_COMPRESSION );
|
||||
os << "hello, hello, hi, ho!" << endl;
|
||||
|
||||
setcompressionlevel( os, Z_DEFAULT_COMPRESSION )
|
||||
<< "I'm compressing again" << endl;
|
||||
|
||||
os.close();
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,329 @@
|
|||
|
||||
#include "zfstream.h"
|
||||
|
||||
gzfilebuf::gzfilebuf() :
|
||||
file(NULL),
|
||||
mode(0),
|
||||
own_file_descriptor(0)
|
||||
{ }
|
||||
|
||||
gzfilebuf::~gzfilebuf() {
|
||||
|
||||
sync();
|
||||
if ( own_file_descriptor )
|
||||
close();
|
||||
|
||||
}
|
||||
|
||||
gzfilebuf *gzfilebuf::open( const char *name,
|
||||
int io_mode ) {
|
||||
|
||||
if ( is_open() )
|
||||
return NULL;
|
||||
|
||||
char char_mode[10];
|
||||
char *p = char_mode;
|
||||
|
||||
if ( io_mode & ios::in ) {
|
||||
mode = ios::in;
|
||||
*p++ = 'r';
|
||||
} else if ( io_mode & ios::app ) {
|
||||
mode = ios::app;
|
||||
*p++ = 'a';
|
||||
} else {
|
||||
mode = ios::out;
|
||||
*p++ = 'w';
|
||||
}
|
||||
|
||||
if ( io_mode & ios::binary ) {
|
||||
mode |= ios::binary;
|
||||
*p++ = 'b';
|
||||
}
|
||||
|
||||
// Hard code the compression level
|
||||
if ( io_mode & (ios::out|ios::app )) {
|
||||
*p++ = '9';
|
||||
}
|
||||
|
||||
// Put the end-of-string indicator
|
||||
*p = '\0';
|
||||
|
||||
if ( (file = gzopen(name, char_mode)) == NULL )
|
||||
return NULL;
|
||||
|
||||
own_file_descriptor = 1;
|
||||
|
||||
return this;
|
||||
|
||||
}
|
||||
|
||||
gzfilebuf *gzfilebuf::attach( int file_descriptor,
|
||||
int io_mode ) {
|
||||
|
||||
if ( is_open() )
|
||||
return NULL;
|
||||
|
||||
char char_mode[10];
|
||||
char *p = char_mode;
|
||||
|
||||
if ( io_mode & ios::in ) {
|
||||
mode = ios::in;
|
||||
*p++ = 'r';
|
||||
} else if ( io_mode & ios::app ) {
|
||||
mode = ios::app;
|
||||
*p++ = 'a';
|
||||
} else {
|
||||
mode = ios::out;
|
||||
*p++ = 'w';
|
||||
}
|
||||
|
||||
if ( io_mode & ios::binary ) {
|
||||
mode |= ios::binary;
|
||||
*p++ = 'b';
|
||||
}
|
||||
|
||||
// Hard code the compression level
|
||||
if ( io_mode & (ios::out|ios::app )) {
|
||||
*p++ = '9';
|
||||
}
|
||||
|
||||
// Put the end-of-string indicator
|
||||
*p = '\0';
|
||||
|
||||
if ( (file = gzdopen(file_descriptor, char_mode)) == NULL )
|
||||
return NULL;
|
||||
|
||||
own_file_descriptor = 0;
|
||||
|
||||
return this;
|
||||
|
||||
}
|
||||
|
||||
gzfilebuf *gzfilebuf::close() {
|
||||
|
||||
if ( is_open() ) {
|
||||
|
||||
sync();
|
||||
gzclose( file );
|
||||
file = NULL;
|
||||
|
||||
}
|
||||
|
||||
return this;
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::setcompressionlevel( int comp_level ) {
|
||||
|
||||
return gzsetparams(file, comp_level, -2);
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::setcompressionstrategy( int comp_strategy ) {
|
||||
|
||||
return gzsetparams(file, -2, comp_strategy);
|
||||
|
||||
}
|
||||
|
||||
|
||||
streampos gzfilebuf::seekoff( streamoff off, ios::seek_dir dir, int which ) {
|
||||
|
||||
return streampos(EOF);
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::underflow() {
|
||||
|
||||
// If the file hasn't been opened for reading, error.
|
||||
if ( !is_open() || !(mode & ios::in) )
|
||||
return EOF;
|
||||
|
||||
// if a buffer doesn't exists, allocate one.
|
||||
if ( !base() ) {
|
||||
|
||||
if ( (allocate()) == EOF )
|
||||
return EOF;
|
||||
setp(0,0);
|
||||
|
||||
} else {
|
||||
|
||||
if ( in_avail() )
|
||||
return (unsigned char) *gptr();
|
||||
|
||||
if ( out_waiting() ) {
|
||||
if ( flushbuf() == EOF )
|
||||
return EOF;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// Attempt to fill the buffer.
|
||||
|
||||
int result = fillbuf();
|
||||
if ( result == EOF ) {
|
||||
// disable get area
|
||||
setg(0,0,0);
|
||||
return EOF;
|
||||
}
|
||||
|
||||
return (unsigned char) *gptr();
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::overflow( int c ) {
|
||||
|
||||
if ( !is_open() || !(mode & ios::out) )
|
||||
return EOF;
|
||||
|
||||
if ( !base() ) {
|
||||
if ( allocate() == EOF )
|
||||
return EOF;
|
||||
setg(0,0,0);
|
||||
} else {
|
||||
if (in_avail()) {
|
||||
return EOF;
|
||||
}
|
||||
if (out_waiting()) {
|
||||
if (flushbuf() == EOF)
|
||||
return EOF;
|
||||
}
|
||||
}
|
||||
|
||||
int bl = blen();
|
||||
setp( base(), base() + bl);
|
||||
|
||||
if ( c != EOF ) {
|
||||
|
||||
*pptr() = c;
|
||||
pbump(1);
|
||||
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::sync() {
|
||||
|
||||
if ( !is_open() )
|
||||
return EOF;
|
||||
|
||||
if ( out_waiting() )
|
||||
return flushbuf();
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::flushbuf() {
|
||||
|
||||
int n;
|
||||
char *q;
|
||||
|
||||
q = pbase();
|
||||
n = pptr() - q;
|
||||
|
||||
if ( gzwrite( file, q, n) < n )
|
||||
return EOF;
|
||||
|
||||
setp(0,0);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int gzfilebuf::fillbuf() {
|
||||
|
||||
int required;
|
||||
char *p;
|
||||
|
||||
p = base();
|
||||
|
||||
required = blen();
|
||||
|
||||
int t = gzread( file, p, required );
|
||||
|
||||
if ( t <= 0) return EOF;
|
||||
|
||||
setg( base(), base(), base()+t);
|
||||
|
||||
return t;
|
||||
|
||||
}
|
||||
|
||||
gzfilestream_common::gzfilestream_common() :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{ }
|
||||
|
||||
gzfilestream_common::~gzfilestream_common()
|
||||
{ }
|
||||
|
||||
void gzfilestream_common::attach( int fd, int io_mode ) {
|
||||
|
||||
if ( !buffer.attach( fd, io_mode) )
|
||||
clear( ios::failbit | ios::badbit );
|
||||
else
|
||||
clear();
|
||||
|
||||
}
|
||||
|
||||
void gzfilestream_common::open( const char *name, int io_mode ) {
|
||||
|
||||
if ( !buffer.open( name, io_mode ) )
|
||||
clear( ios::failbit | ios::badbit );
|
||||
else
|
||||
clear();
|
||||
|
||||
}
|
||||
|
||||
void gzfilestream_common::close() {
|
||||
|
||||
if ( !buffer.close() )
|
||||
clear( ios::failbit | ios::badbit );
|
||||
|
||||
}
|
||||
|
||||
gzfilebuf *gzfilestream_common::rdbuf()
|
||||
{
|
||||
return &buffer;
|
||||
}
|
||||
|
||||
gzifstream::gzifstream() :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{
|
||||
clear( ios::badbit );
|
||||
}
|
||||
|
||||
gzifstream::gzifstream( const char *name, int io_mode ) :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{
|
||||
gzfilestream_common::open( name, io_mode );
|
||||
}
|
||||
|
||||
gzifstream::gzifstream( int fd, int io_mode ) :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{
|
||||
gzfilestream_common::attach( fd, io_mode );
|
||||
}
|
||||
|
||||
gzifstream::~gzifstream() { }
|
||||
|
||||
gzofstream::gzofstream() :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{
|
||||
clear( ios::badbit );
|
||||
}
|
||||
|
||||
gzofstream::gzofstream( const char *name, int io_mode ) :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{
|
||||
gzfilestream_common::open( name, io_mode );
|
||||
}
|
||||
|
||||
gzofstream::gzofstream( int fd, int io_mode ) :
|
||||
ios( gzfilestream_common::rdbuf() )
|
||||
{
|
||||
gzfilestream_common::attach( fd, io_mode );
|
||||
}
|
||||
|
||||
gzofstream::~gzofstream() { }
|
||||
|
|
@ -0,0 +1,128 @@
|
|||
|
||||
#ifndef zfstream_h
|
||||
#define zfstream_h
|
||||
|
||||
#include <fstream.h>
|
||||
#include "zlib.h"
|
||||
|
||||
class gzfilebuf : public streambuf {
|
||||
|
||||
public:
|
||||
|
||||
gzfilebuf( );
|
||||
virtual ~gzfilebuf();
|
||||
|
||||
gzfilebuf *open( const char *name, int io_mode );
|
||||
gzfilebuf *attach( int file_descriptor, int io_mode );
|
||||
gzfilebuf *close();
|
||||
|
||||
int setcompressionlevel( int comp_level );
|
||||
int setcompressionstrategy( int comp_strategy );
|
||||
|
||||
inline int is_open() const { return (file !=NULL); }
|
||||
|
||||
virtual streampos seekoff( streamoff, ios::seek_dir, int );
|
||||
|
||||
virtual int sync();
|
||||
|
||||
protected:
|
||||
|
||||
virtual int underflow();
|
||||
virtual int overflow( int = EOF );
|
||||
|
||||
private:
|
||||
|
||||
gzFile file;
|
||||
short mode;
|
||||
short own_file_descriptor;
|
||||
|
||||
int flushbuf();
|
||||
int fillbuf();
|
||||
|
||||
};
|
||||
|
||||
class gzfilestream_common : virtual public ios {
|
||||
|
||||
friend class gzifstream;
|
||||
friend class gzofstream;
|
||||
friend gzofstream &setcompressionlevel( gzofstream &, int );
|
||||
friend gzofstream &setcompressionstrategy( gzofstream &, int );
|
||||
|
||||
public:
|
||||
virtual ~gzfilestream_common();
|
||||
|
||||
void attach( int fd, int io_mode );
|
||||
void open( const char *name, int io_mode );
|
||||
void close();
|
||||
|
||||
protected:
|
||||
gzfilestream_common();
|
||||
|
||||
private:
|
||||
gzfilebuf *rdbuf();
|
||||
|
||||
gzfilebuf buffer;
|
||||
|
||||
};
|
||||
|
||||
class gzifstream : public gzfilestream_common, public istream {
|
||||
|
||||
public:
|
||||
|
||||
gzifstream();
|
||||
gzifstream( const char *name, int io_mode = ios::in );
|
||||
gzifstream( int fd, int io_mode = ios::in );
|
||||
|
||||
virtual ~gzifstream();
|
||||
|
||||
};
|
||||
|
||||
class gzofstream : public gzfilestream_common, public ostream {
|
||||
|
||||
public:
|
||||
|
||||
gzofstream();
|
||||
gzofstream( const char *name, int io_mode = ios::out );
|
||||
gzofstream( int fd, int io_mode = ios::out );
|
||||
|
||||
virtual ~gzofstream();
|
||||
|
||||
};
|
||||
|
||||
template<class T> class gzomanip {
|
||||
friend gzofstream &operator<<(gzofstream &, const gzomanip<T> &);
|
||||
public:
|
||||
gzomanip(gzofstream &(*f)(gzofstream &, T), T v) : func(f), val(v) { }
|
||||
private:
|
||||
gzofstream &(*func)(gzofstream &, T);
|
||||
T val;
|
||||
};
|
||||
|
||||
template<class T> gzofstream &operator<<(gzofstream &s, const gzomanip<T> &m)
|
||||
{
|
||||
return (*m.func)(s, m.val);
|
||||
}
|
||||
|
||||
inline gzofstream &setcompressionlevel( gzofstream &s, int l )
|
||||
{
|
||||
(s.rdbuf())->setcompressionlevel(l);
|
||||
return s;
|
||||
}
|
||||
|
||||
inline gzofstream &setcompressionstrategy( gzofstream &s, int l )
|
||||
{
|
||||
(s.rdbuf())->setcompressionstrategy(l);
|
||||
return s;
|
||||
}
|
||||
|
||||
inline gzomanip<int> setcompressionlevel(int l)
|
||||
{
|
||||
return gzomanip<int>(&setcompressionlevel,l);
|
||||
}
|
||||
|
||||
inline gzomanip<int> setcompressionstrategy(int l)
|
||||
{
|
||||
return gzomanip<int>(&setcompressionstrategy,l);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,307 @@
|
|||
/*
|
||||
*
|
||||
* Copyright (c) 1997
|
||||
* Christian Michelsen Research AS
|
||||
* Advanced Computing
|
||||
* Fantoftvegen 38, 5036 BERGEN, Norway
|
||||
* http://www.cmr.no
|
||||
*
|
||||
* Permission to use, copy, modify, distribute and sell this software
|
||||
* and its documentation for any purpose is hereby granted without fee,
|
||||
* provided that the above copyright notice appear in all copies and
|
||||
* that both that copyright notice and this permission notice appear
|
||||
* in supporting documentation. Christian Michelsen Research AS makes no
|
||||
* representations about the suitability of this software for any
|
||||
* purpose. It is provided "as is" without express or implied warranty.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef ZSTREAM__H
|
||||
#define ZSTREAM__H
|
||||
|
||||
/*
|
||||
* zstream.h - C++ interface to the 'zlib' general purpose compression library
|
||||
* $Id: zstream.h 1.1 1997-06-25 12:00:56+02 tyge Exp tyge $
|
||||
*/
|
||||
|
||||
#include <strstream.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
#include "zlib.h"
|
||||
|
||||
#if defined(_WIN32)
|
||||
# include <fcntl.h>
|
||||
# include <io.h>
|
||||
# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
|
||||
#else
|
||||
# define SET_BINARY_MODE(file)
|
||||
#endif
|
||||
|
||||
class zstringlen {
|
||||
public:
|
||||
zstringlen(class izstream&);
|
||||
zstringlen(class ozstream&, const char*);
|
||||
size_t value() const { return val.word; }
|
||||
private:
|
||||
struct Val { unsigned char byte; size_t word; } val;
|
||||
};
|
||||
|
||||
// ----------------------------- izstream -----------------------------
|
||||
|
||||
class izstream
|
||||
{
|
||||
public:
|
||||
izstream() : m_fp(0) {}
|
||||
izstream(FILE* fp) : m_fp(0) { open(fp); }
|
||||
izstream(const char* name) : m_fp(0) { open(name); }
|
||||
~izstream() { close(); }
|
||||
|
||||
/* Opens a gzip (.gz) file for reading.
|
||||
* open() can be used to read a file which is not in gzip format;
|
||||
* in this case read() will directly read from the file without
|
||||
* decompression. errno can be checked to distinguish two error
|
||||
* cases (if errno is zero, the zlib error is Z_MEM_ERROR).
|
||||
*/
|
||||
void open(const char* name) {
|
||||
if (m_fp) close();
|
||||
m_fp = ::gzopen(name, "rb");
|
||||
}
|
||||
|
||||
void open(FILE* fp) {
|
||||
SET_BINARY_MODE(fp);
|
||||
if (m_fp) close();
|
||||
m_fp = ::gzdopen(fileno(fp), "rb");
|
||||
}
|
||||
|
||||
/* Flushes all pending input if necessary, closes the compressed file
|
||||
* and deallocates all the (de)compression state. The return value is
|
||||
* the zlib error number (see function error() below).
|
||||
*/
|
||||
int close() {
|
||||
int r = ::gzclose(m_fp);
|
||||
m_fp = 0; return r;
|
||||
}
|
||||
|
||||
/* Binary read the given number of bytes from the compressed file.
|
||||
*/
|
||||
int read(void* buf, size_t len) {
|
||||
return ::gzread(m_fp, buf, len);
|
||||
}
|
||||
|
||||
/* Returns the error message for the last error which occurred on the
|
||||
* given compressed file. errnum is set to zlib error number. If an
|
||||
* error occurred in the file system and not in the compression library,
|
||||
* errnum is set to Z_ERRNO and the application may consult errno
|
||||
* to get the exact error code.
|
||||
*/
|
||||
const char* error(int* errnum) {
|
||||
return ::gzerror(m_fp, errnum);
|
||||
}
|
||||
|
||||
gzFile fp() { return m_fp; }
|
||||
|
||||
private:
|
||||
gzFile m_fp;
|
||||
};
|
||||
|
||||
/*
|
||||
* Binary read the given (array of) object(s) from the compressed file.
|
||||
* If the input file was not in gzip format, read() copies the objects number
|
||||
* of bytes into the buffer.
|
||||
* returns the number of uncompressed bytes actually read
|
||||
* (0 for end of file, -1 for error).
|
||||
*/
|
||||
template <class T, class Items>
|
||||
inline int read(izstream& zs, T* x, Items items) {
|
||||
return ::gzread(zs.fp(), x, items*sizeof(T));
|
||||
}
|
||||
|
||||
/*
|
||||
* Binary input with the '>' operator.
|
||||
*/
|
||||
template <class T>
|
||||
inline izstream& operator>(izstream& zs, T& x) {
|
||||
::gzread(zs.fp(), &x, sizeof(T));
|
||||
return zs;
|
||||
}
|
||||
|
||||
|
||||
inline zstringlen::zstringlen(izstream& zs) {
|
||||
zs > val.byte;
|
||||
if (val.byte == 255) zs > val.word;
|
||||
else val.word = val.byte;
|
||||
}
|
||||
|
||||
/*
|
||||
* Read length of string + the string with the '>' operator.
|
||||
*/
|
||||
inline izstream& operator>(izstream& zs, char* x) {
|
||||
zstringlen len(zs);
|
||||
::gzread(zs.fp(), x, len.value());
|
||||
x[len.value()] = '\0';
|
||||
return zs;
|
||||
}
|
||||
|
||||
inline char* read_string(izstream& zs) {
|
||||
zstringlen len(zs);
|
||||
char* x = new char[len.value()+1];
|
||||
::gzread(zs.fp(), x, len.value());
|
||||
x[len.value()] = '\0';
|
||||
return x;
|
||||
}
|
||||
|
||||
// ----------------------------- ozstream -----------------------------
|
||||
|
||||
class ozstream
|
||||
{
|
||||
public:
|
||||
ozstream() : m_fp(0), m_os(0) {
|
||||
}
|
||||
ozstream(FILE* fp, int level = Z_DEFAULT_COMPRESSION)
|
||||
: m_fp(0), m_os(0) {
|
||||
open(fp, level);
|
||||
}
|
||||
ozstream(const char* name, int level = Z_DEFAULT_COMPRESSION)
|
||||
: m_fp(0), m_os(0) {
|
||||
open(name, level);
|
||||
}
|
||||
~ozstream() {
|
||||
close();
|
||||
}
|
||||
|
||||
/* Opens a gzip (.gz) file for writing.
|
||||
* The compression level parameter should be in 0..9
|
||||
* errno can be checked to distinguish two error cases
|
||||
* (if errno is zero, the zlib error is Z_MEM_ERROR).
|
||||
*/
|
||||
void open(const char* name, int level = Z_DEFAULT_COMPRESSION) {
|
||||
char mode[4] = "wb\0";
|
||||
if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
|
||||
if (m_fp) close();
|
||||
m_fp = ::gzopen(name, mode);
|
||||
}
|
||||
|
||||
/* open from a FILE pointer.
|
||||
*/
|
||||
void open(FILE* fp, int level = Z_DEFAULT_COMPRESSION) {
|
||||
SET_BINARY_MODE(fp);
|
||||
char mode[4] = "wb\0";
|
||||
if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
|
||||
if (m_fp) close();
|
||||
m_fp = ::gzdopen(fileno(fp), mode);
|
||||
}
|
||||
|
||||
/* Flushes all pending output if necessary, closes the compressed file
|
||||
* and deallocates all the (de)compression state. The return value is
|
||||
* the zlib error number (see function error() below).
|
||||
*/
|
||||
int close() {
|
||||
if (m_os) {
|
||||
::gzwrite(m_fp, m_os->str(), m_os->pcount());
|
||||
delete[] m_os->str(); delete m_os; m_os = 0;
|
||||
}
|
||||
int r = ::gzclose(m_fp); m_fp = 0; return r;
|
||||
}
|
||||
|
||||
/* Binary write the given number of bytes into the compressed file.
|
||||
*/
|
||||
int write(const void* buf, size_t len) {
|
||||
return ::gzwrite(m_fp, (voidp) buf, len);
|
||||
}
|
||||
|
||||
/* Flushes all pending output into the compressed file. The parameter
|
||||
* _flush is as in the deflate() function. The return value is the zlib
|
||||
* error number (see function gzerror below). flush() returns Z_OK if
|
||||
* the flush_ parameter is Z_FINISH and all output could be flushed.
|
||||
* flush() should be called only when strictly necessary because it can
|
||||
* degrade compression.
|
||||
*/
|
||||
int flush(int _flush) {
|
||||
os_flush();
|
||||
return ::gzflush(m_fp, _flush);
|
||||
}
|
||||
|
||||
/* Returns the error message for the last error which occurred on the
|
||||
* given compressed file. errnum is set to zlib error number. If an
|
||||
* error occurred in the file system and not in the compression library,
|
||||
* errnum is set to Z_ERRNO and the application may consult errno
|
||||
* to get the exact error code.
|
||||
*/
|
||||
const char* error(int* errnum) {
|
||||
return ::gzerror(m_fp, errnum);
|
||||
}
|
||||
|
||||
gzFile fp() { return m_fp; }
|
||||
|
||||
ostream& os() {
|
||||
if (m_os == 0) m_os = new ostrstream;
|
||||
return *m_os;
|
||||
}
|
||||
|
||||
void os_flush() {
|
||||
if (m_os && m_os->pcount()>0) {
|
||||
ostrstream* oss = new ostrstream;
|
||||
oss->fill(m_os->fill());
|
||||
oss->flags(m_os->flags());
|
||||
oss->precision(m_os->precision());
|
||||
oss->width(m_os->width());
|
||||
::gzwrite(m_fp, m_os->str(), m_os->pcount());
|
||||
delete[] m_os->str(); delete m_os; m_os = oss;
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
gzFile m_fp;
|
||||
ostrstream* m_os;
|
||||
};
|
||||
|
||||
/*
|
||||
* Binary write the given (array of) object(s) into the compressed file.
|
||||
* returns the number of uncompressed bytes actually written
|
||||
* (0 in case of error).
|
||||
*/
|
||||
template <class T, class Items>
|
||||
inline int write(ozstream& zs, const T* x, Items items) {
|
||||
return ::gzwrite(zs.fp(), (voidp) x, items*sizeof(T));
|
||||
}
|
||||
|
||||
/*
|
||||
* Binary output with the '<' operator.
|
||||
*/
|
||||
template <class T>
|
||||
inline ozstream& operator<(ozstream& zs, const T& x) {
|
||||
::gzwrite(zs.fp(), (voidp) &x, sizeof(T));
|
||||
return zs;
|
||||
}
|
||||
|
||||
inline zstringlen::zstringlen(ozstream& zs, const char* x) {
|
||||
val.byte = 255; val.word = ::strlen(x);
|
||||
if (val.word < 255) zs < (val.byte = val.word);
|
||||
else zs < val;
|
||||
}
|
||||
|
||||
/*
|
||||
* Write length of string + the string with the '<' operator.
|
||||
*/
|
||||
inline ozstream& operator<(ozstream& zs, const char* x) {
|
||||
zstringlen len(zs, x);
|
||||
::gzwrite(zs.fp(), (voidp) x, len.value());
|
||||
return zs;
|
||||
}
|
||||
|
||||
#ifdef _MSC_VER
|
||||
inline ozstream& operator<(ozstream& zs, char* const& x) {
|
||||
return zs < (const char*) x;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Ascii write with the << operator;
|
||||
*/
|
||||
template <class T>
|
||||
inline ostream& operator<<(ozstream& zs, const T& x) {
|
||||
zs.os_flush();
|
||||
return zs.os() << x;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
#include "zstream.h"
|
||||
#include <math.h>
|
||||
#include <stdlib.h>
|
||||
#include <iomanip.h>
|
||||
|
||||
void main() {
|
||||
char h[256] = "Hello";
|
||||
char* g = "Goodbye";
|
||||
ozstream out("temp.gz");
|
||||
out < "This works well" < h < g;
|
||||
out.close();
|
||||
|
||||
izstream in("temp.gz"); // read it back
|
||||
char *x = read_string(in), *y = new char[256], z[256];
|
||||
in > y > z;
|
||||
in.close();
|
||||
cout << x << endl << y << endl << z << endl;
|
||||
|
||||
out.open("temp.gz"); // try ascii output; zcat temp.gz to see the results
|
||||
out << setw(50) << setfill('#') << setprecision(20) << x << endl << y << endl << z << endl;
|
||||
out << z << endl << y << endl << x << endl;
|
||||
out << 1.1234567890123456789 << endl;
|
||||
|
||||
delete[] x; delete[] y;
|
||||
}
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
These classes provide a C++ stream interface to the zlib library. It allows you
|
||||
to do things like:
|
||||
|
||||
gzofstream outf("blah.gz");
|
||||
outf << "These go into the gzip file " << 123 << endl;
|
||||
|
||||
It does this by deriving a specialized stream buffer for gzipped files, which is
|
||||
the way Stroustrup would have done it. :->
|
||||
|
||||
The gzifstream and gzofstream classes were originally written by Kevin Ruland
|
||||
and made available in the zlib contrib/iostream directory. The older version still
|
||||
compiles under gcc 2.xx, but not under gcc 3.xx, which sparked the development of
|
||||
this version.
|
||||
|
||||
The new classes are as standard-compliant as possible, closely following the
|
||||
approach of the standard library's fstream classes. It compiles under gcc versions
|
||||
3.2 and 3.3, but not under gcc 2.xx. This is mainly due to changes in the standard
|
||||
library naming scheme. The new version of gzifstream/gzofstream/gzfilebuf differs
|
||||
from the previous one in the following respects:
|
||||
- added showmanyc
|
||||
- added setbuf, with support for unbuffered output via setbuf(0,0)
|
||||
- a few bug fixes of stream behavior
|
||||
- gzipped output file opened with default compression level instead of maximum level
|
||||
- setcompressionlevel()/strategy() members replaced by single setcompression()
|
||||
|
||||
The code is provided "as is", with the permission to use, copy, modify, distribute
|
||||
and sell it for any purpose without fee.
|
||||
|
||||
Ludwig Schwardt
|
||||
<schwardt@sun.ac.za>
|
||||
|
||||
DSP Lab
|
||||
Electrical & Electronic Engineering Department
|
||||
University of Stellenbosch
|
||||
South Africa
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
Possible upgrades to gzfilebuf:
|
||||
|
||||
- The ability to do putback (e.g. putbackfail)
|
||||
|
||||
- The ability to seek (zlib supports this, but could be slow/tricky)
|
||||
|
||||
- Simultaneous read/write access (does it make sense?)
|
||||
|
||||
- Support for ios_base::ate open mode
|
||||
|
||||
- Locale support?
|
||||
|
||||
- Check public interface to see which calls give problems
|
||||
(due to dependence on library internals)
|
||||
|
||||
- Override operator<<(ostream&, gzfilebuf*) to allow direct copying
|
||||
of stream buffer to stream ( i.e. os << is.rdbuf(); )
|
||||
|
|
@ -0,0 +1,50 @@
|
|||
/*
|
||||
* Test program for gzifstream and gzofstream
|
||||
*
|
||||
* by Ludwig Schwardt <schwardt@sun.ac.za>
|
||||
* original version by Kevin Ruland <kevin@rodin.wustl.edu>
|
||||
*/
|
||||
|
||||
#include "zfstream.h"
|
||||
#include <iostream> // for cout
|
||||
|
||||
int main() {
|
||||
|
||||
gzofstream outf;
|
||||
gzifstream inf;
|
||||
char buf[80];
|
||||
|
||||
outf.open("test1.txt.gz");
|
||||
outf << "The quick brown fox sidestepped the lazy canine\n"
|
||||
<< 1.3 << "\nPlan " << 9 << std::endl;
|
||||
outf.close();
|
||||
std::cout << "Wrote the following message to 'test1.txt.gz' (check with zcat or zless):\n"
|
||||
<< "The quick brown fox sidestepped the lazy canine\n"
|
||||
<< 1.3 << "\nPlan " << 9 << std::endl;
|
||||
|
||||
std::cout << "\nReading 'test1.txt.gz' (buffered) produces:\n";
|
||||
inf.open("test1.txt.gz");
|
||||
while (inf.getline(buf,80,'\n')) {
|
||||
std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
|
||||
}
|
||||
inf.close();
|
||||
|
||||
outf.rdbuf()->pubsetbuf(0,0);
|
||||
outf.open("test2.txt.gz");
|
||||
outf << setcompression(Z_NO_COMPRESSION)
|
||||
<< "The quick brown fox sidestepped the lazy canine\n"
|
||||
<< 1.3 << "\nPlan " << 9 << std::endl;
|
||||
outf.close();
|
||||
std::cout << "\nWrote the same message to 'test2.txt.gz' in uncompressed form";
|
||||
|
||||
std::cout << "\nReading 'test2.txt.gz' (unbuffered) produces:\n";
|
||||
inf.rdbuf()->pubsetbuf(0,0);
|
||||
inf.open("test2.txt.gz");
|
||||
while (inf.getline(buf,80,'\n')) {
|
||||
std::cout << buf << "\t(" << inf.rdbuf()->in_avail() << " chars left in buffer)\n";
|
||||
}
|
||||
inf.close();
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,479 @@
|
|||
/*
|
||||
* A C++ I/O streams interface to the zlib gz* functions
|
||||
*
|
||||
* by Ludwig Schwardt <schwardt@sun.ac.za>
|
||||
* original version by Kevin Ruland <kevin@rodin.wustl.edu>
|
||||
*
|
||||
* This version is standard-compliant and compatible with gcc 3.x.
|
||||
*/
|
||||
|
||||
#include "zfstream.h"
|
||||
#include <cstring> // for strcpy, strcat, strlen (mode strings)
|
||||
#include <cstdio> // for BUFSIZ
|
||||
|
||||
// Internal buffer sizes (default and "unbuffered" versions)
|
||||
#define BIGBUFSIZE BUFSIZ
|
||||
#define SMALLBUFSIZE 1
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
// Default constructor
|
||||
gzfilebuf::gzfilebuf()
|
||||
: file(NULL), io_mode(std::ios_base::openmode(0)), own_fd(false),
|
||||
buffer(NULL), buffer_size(BIGBUFSIZE), own_buffer(true)
|
||||
{
|
||||
// No buffers to start with
|
||||
this->disable_buffer();
|
||||
}
|
||||
|
||||
// Destructor
|
||||
gzfilebuf::~gzfilebuf()
|
||||
{
|
||||
// Sync output buffer and close only if responsible for file
|
||||
// (i.e. attached streams should be left open at this stage)
|
||||
this->sync();
|
||||
if (own_fd)
|
||||
this->close();
|
||||
// Make sure internal buffer is deallocated
|
||||
this->disable_buffer();
|
||||
}
|
||||
|
||||
// Set compression level and strategy
|
||||
int
|
||||
gzfilebuf::setcompression(int comp_level,
|
||||
int comp_strategy)
|
||||
{
|
||||
return gzsetparams(file, comp_level, comp_strategy);
|
||||
}
|
||||
|
||||
// Open gzipped file
|
||||
gzfilebuf*
|
||||
gzfilebuf::open(const char *name,
|
||||
std::ios_base::openmode mode)
|
||||
{
|
||||
// Fail if file already open
|
||||
if (this->is_open())
|
||||
return NULL;
|
||||
// Don't support simultaneous read/write access (yet)
|
||||
if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
|
||||
return NULL;
|
||||
|
||||
// Build mode string for gzopen and check it [27.8.1.3.2]
|
||||
char char_mode[6] = "\0\0\0\0\0";
|
||||
if (!this->open_mode(mode, char_mode))
|
||||
return NULL;
|
||||
|
||||
// Attempt to open file
|
||||
if ((file = gzopen(name, char_mode)) == NULL)
|
||||
return NULL;
|
||||
|
||||
// On success, allocate internal buffer and set flags
|
||||
this->enable_buffer();
|
||||
io_mode = mode;
|
||||
own_fd = true;
|
||||
return this;
|
||||
}
|
||||
|
||||
// Attach to gzipped file
|
||||
gzfilebuf*
|
||||
gzfilebuf::attach(int fd,
|
||||
std::ios_base::openmode mode)
|
||||
{
|
||||
// Fail if file already open
|
||||
if (this->is_open())
|
||||
return NULL;
|
||||
// Don't support simultaneous read/write access (yet)
|
||||
if ((mode & std::ios_base::in) && (mode & std::ios_base::out))
|
||||
return NULL;
|
||||
|
||||
// Build mode string for gzdopen and check it [27.8.1.3.2]
|
||||
char char_mode[6] = "\0\0\0\0\0";
|
||||
if (!this->open_mode(mode, char_mode))
|
||||
return NULL;
|
||||
|
||||
// Attempt to attach to file
|
||||
if ((file = gzdopen(fd, char_mode)) == NULL)
|
||||
return NULL;
|
||||
|
||||
// On success, allocate internal buffer and set flags
|
||||
this->enable_buffer();
|
||||
io_mode = mode;
|
||||
own_fd = false;
|
||||
return this;
|
||||
}
|
||||
|
||||
// Close gzipped file
|
||||
gzfilebuf*
|
||||
gzfilebuf::close()
|
||||
{
|
||||
// Fail immediately if no file is open
|
||||
if (!this->is_open())
|
||||
return NULL;
|
||||
// Assume success
|
||||
gzfilebuf* retval = this;
|
||||
// Attempt to sync and close gzipped file
|
||||
if (this->sync() == -1)
|
||||
retval = NULL;
|
||||
if (gzclose(file) < 0)
|
||||
retval = NULL;
|
||||
// File is now gone anyway (postcondition [27.8.1.3.8])
|
||||
file = NULL;
|
||||
own_fd = false;
|
||||
// Destroy internal buffer if it exists
|
||||
this->disable_buffer();
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
||||
|
||||
// Convert int open mode to mode string
|
||||
bool
|
||||
gzfilebuf::open_mode(std::ios_base::openmode mode,
|
||||
char* c_mode) const
|
||||
{
|
||||
bool testb = mode & std::ios_base::binary;
|
||||
bool testi = mode & std::ios_base::in;
|
||||
bool testo = mode & std::ios_base::out;
|
||||
bool testt = mode & std::ios_base::trunc;
|
||||
bool testa = mode & std::ios_base::app;
|
||||
|
||||
// Check for valid flag combinations - see [27.8.1.3.2] (Table 92)
|
||||
// Original zfstream hardcoded the compression level to maximum here...
|
||||
// Double the time for less than 1% size improvement seems
|
||||
// excessive though - keeping it at the default level
|
||||
// To change back, just append "9" to the next three mode strings
|
||||
if (!testi && testo && !testt && !testa)
|
||||
strcpy(c_mode, "w");
|
||||
if (!testi && testo && !testt && testa)
|
||||
strcpy(c_mode, "a");
|
||||
if (!testi && testo && testt && !testa)
|
||||
strcpy(c_mode, "w");
|
||||
if (testi && !testo && !testt && !testa)
|
||||
strcpy(c_mode, "r");
|
||||
// No read/write mode yet
|
||||
// if (testi && testo && !testt && !testa)
|
||||
// strcpy(c_mode, "r+");
|
||||
// if (testi && testo && testt && !testa)
|
||||
// strcpy(c_mode, "w+");
|
||||
|
||||
// Mode string should be empty for invalid combination of flags
|
||||
if (strlen(c_mode) == 0)
|
||||
return false;
|
||||
if (testb)
|
||||
strcat(c_mode, "b");
|
||||
return true;
|
||||
}
|
||||
|
||||
// Determine number of characters in internal get buffer
|
||||
std::streamsize
|
||||
gzfilebuf::showmanyc()
|
||||
{
|
||||
// Calls to underflow will fail if file not opened for reading
|
||||
if (!this->is_open() || !(io_mode & std::ios_base::in))
|
||||
return -1;
|
||||
// Make sure get area is in use
|
||||
if (this->gptr() && (this->gptr() < this->egptr()))
|
||||
return std::streamsize(this->egptr() - this->gptr());
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Fill get area from gzipped file
|
||||
gzfilebuf::int_type
|
||||
gzfilebuf::underflow()
|
||||
{
|
||||
// If something is left in the get area by chance, return it
|
||||
// (this shouldn't normally happen, as underflow is only supposed
|
||||
// to be called when gptr >= egptr, but it serves as error check)
|
||||
if (this->gptr() && (this->gptr() < this->egptr()))
|
||||
return traits_type::to_int_type(*(this->gptr()));
|
||||
|
||||
// If the file hasn't been opened for reading, produce error
|
||||
if (!this->is_open() || !(io_mode & std::ios_base::in))
|
||||
return traits_type::eof();
|
||||
|
||||
// Attempt to fill internal buffer from gzipped file
|
||||
// (buffer must be guaranteed to exist...)
|
||||
int bytes_read = gzread(file, buffer, buffer_size);
|
||||
// Indicates error or EOF
|
||||
if (bytes_read <= 0)
|
||||
{
|
||||
// Reset get area
|
||||
this->setg(buffer, buffer, buffer);
|
||||
return traits_type::eof();
|
||||
}
|
||||
// Make all bytes read from file available as get area
|
||||
this->setg(buffer, buffer, buffer + bytes_read);
|
||||
|
||||
// Return next character in get area
|
||||
return traits_type::to_int_type(*(this->gptr()));
|
||||
}
|
||||
|
||||
// Write put area to gzipped file
|
||||
gzfilebuf::int_type
|
||||
gzfilebuf::overflow(int_type c)
|
||||
{
|
||||
// Determine whether put area is in use
|
||||
if (this->pbase())
|
||||
{
|
||||
// Double-check pointer range
|
||||
if (this->pptr() > this->epptr() || this->pptr() < this->pbase())
|
||||
return traits_type::eof();
|
||||
// Add extra character to buffer if not EOF
|
||||
if (!traits_type::eq_int_type(c, traits_type::eof()))
|
||||
{
|
||||
*(this->pptr()) = traits_type::to_char_type(c);
|
||||
this->pbump(1);
|
||||
}
|
||||
// Number of characters to write to file
|
||||
int bytes_to_write = this->pptr() - this->pbase();
|
||||
// Overflow doesn't fail if nothing is to be written
|
||||
if (bytes_to_write > 0)
|
||||
{
|
||||
// If the file hasn't been opened for writing, produce error
|
||||
if (!this->is_open() || !(io_mode & std::ios_base::out))
|
||||
return traits_type::eof();
|
||||
// If gzipped file won't accept all bytes written to it, fail
|
||||
if (gzwrite(file, this->pbase(), bytes_to_write) != bytes_to_write)
|
||||
return traits_type::eof();
|
||||
// Reset next pointer to point to pbase on success
|
||||
this->pbump(-bytes_to_write);
|
||||
}
|
||||
}
|
||||
// Write extra character to file if not EOF
|
||||
else if (!traits_type::eq_int_type(c, traits_type::eof()))
|
||||
{
|
||||
// If the file hasn't been opened for writing, produce error
|
||||
if (!this->is_open() || !(io_mode & std::ios_base::out))
|
||||
return traits_type::eof();
|
||||
// Impromptu char buffer (allows "unbuffered" output)
|
||||
char_type last_char = traits_type::to_char_type(c);
|
||||
// If gzipped file won't accept this character, fail
|
||||
if (gzwrite(file, &last_char, 1) != 1)
|
||||
return traits_type::eof();
|
||||
}
|
||||
|
||||
// If you got here, you have succeeded (even if c was EOF)
|
||||
// The return value should therefore be non-EOF
|
||||
if (traits_type::eq_int_type(c, traits_type::eof()))
|
||||
return traits_type::not_eof(c);
|
||||
else
|
||||
return c;
|
||||
}
|
||||
|
||||
// Assign new buffer
|
||||
std::streambuf*
|
||||
gzfilebuf::setbuf(char_type* p,
|
||||
std::streamsize n)
|
||||
{
|
||||
// First make sure stuff is sync'ed, for safety
|
||||
if (this->sync() == -1)
|
||||
return NULL;
|
||||
// If buffering is turned off on purpose via setbuf(0,0), still allocate one...
|
||||
// "Unbuffered" only really refers to put [27.8.1.4.10], while get needs at
|
||||
// least a buffer of size 1 (very inefficient though, therefore make it bigger?)
|
||||
// This follows from [27.5.2.4.3]/12 (gptr needs to point at something, it seems)
|
||||
if (!p || !n)
|
||||
{
|
||||
// Replace existing buffer (if any) with small internal buffer
|
||||
this->disable_buffer();
|
||||
buffer = NULL;
|
||||
buffer_size = 0;
|
||||
own_buffer = true;
|
||||
this->enable_buffer();
|
||||
}
|
||||
else
|
||||
{
|
||||
// Replace existing buffer (if any) with external buffer
|
||||
this->disable_buffer();
|
||||
buffer = p;
|
||||
buffer_size = n;
|
||||
own_buffer = false;
|
||||
this->enable_buffer();
|
||||
}
|
||||
return this;
|
||||
}
|
||||
|
||||
// Write put area to gzipped file (i.e. ensures that put area is empty)
|
||||
int
|
||||
gzfilebuf::sync()
|
||||
{
|
||||
return traits_type::eq_int_type(this->overflow(), traits_type::eof()) ? -1 : 0;
|
||||
}
|
||||
|
||||
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
|
||||
|
||||
// Allocate internal buffer
|
||||
void
|
||||
gzfilebuf::enable_buffer()
|
||||
{
|
||||
// If internal buffer required, allocate one
|
||||
if (own_buffer && !buffer)
|
||||
{
|
||||
// Check for buffered vs. "unbuffered"
|
||||
if (buffer_size > 0)
|
||||
{
|
||||
// Allocate internal buffer
|
||||
buffer = new char_type[buffer_size];
|
||||
// Get area starts empty and will be expanded by underflow as need arises
|
||||
this->setg(buffer, buffer, buffer);
|
||||
// Setup entire internal buffer as put area.
|
||||
// The one-past-end pointer actually points to the last element of the buffer,
|
||||
// so that overflow(c) can safely add the extra character c to the sequence.
|
||||
// These pointers remain in place for the duration of the buffer
|
||||
this->setp(buffer, buffer + buffer_size - 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Even in "unbuffered" case, (small?) get buffer is still required
|
||||
buffer_size = SMALLBUFSIZE;
|
||||
buffer = new char_type[buffer_size];
|
||||
this->setg(buffer, buffer, buffer);
|
||||
// "Unbuffered" means no put buffer
|
||||
this->setp(0, 0);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// If buffer already allocated, reset buffer pointers just to make sure no
|
||||
// stale chars are lying around
|
||||
this->setg(buffer, buffer, buffer);
|
||||
this->setp(buffer, buffer + buffer_size - 1);
|
||||
}
|
||||
}
|
||||
|
||||
// Destroy internal buffer
|
||||
void
|
||||
gzfilebuf::disable_buffer()
|
||||
{
|
||||
// If internal buffer exists, deallocate it
|
||||
if (own_buffer && buffer)
|
||||
{
|
||||
// Preserve unbuffered status by zeroing size
|
||||
if (!this->pbase())
|
||||
buffer_size = 0;
|
||||
delete[] buffer;
|
||||
buffer = NULL;
|
||||
this->setg(0, 0, 0);
|
||||
this->setp(0, 0);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Reset buffer pointers to initial state if external buffer exists
|
||||
this->setg(buffer, buffer, buffer);
|
||||
if (buffer)
|
||||
this->setp(buffer, buffer + buffer_size - 1);
|
||||
else
|
||||
this->setp(0, 0);
|
||||
}
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
// Default constructor initializes stream buffer
|
||||
gzifstream::gzifstream()
|
||||
: std::istream(NULL), sb()
|
||||
{ this->init(&sb); }
|
||||
|
||||
// Initialize stream buffer and open file
|
||||
gzifstream::gzifstream(const char* name,
|
||||
std::ios_base::openmode mode)
|
||||
: std::istream(NULL), sb()
|
||||
{
|
||||
this->init(&sb);
|
||||
this->open(name, mode);
|
||||
}
|
||||
|
||||
// Initialize stream buffer and attach to file
|
||||
gzifstream::gzifstream(int fd,
|
||||
std::ios_base::openmode mode)
|
||||
: std::istream(NULL), sb()
|
||||
{
|
||||
this->init(&sb);
|
||||
this->attach(fd, mode);
|
||||
}
|
||||
|
||||
// Open file and go into fail() state if unsuccessful
|
||||
void
|
||||
gzifstream::open(const char* name,
|
||||
std::ios_base::openmode mode)
|
||||
{
|
||||
if (!sb.open(name, mode | std::ios_base::in))
|
||||
this->setstate(std::ios_base::failbit);
|
||||
else
|
||||
this->clear();
|
||||
}
|
||||
|
||||
// Attach to file and go into fail() state if unsuccessful
|
||||
void
|
||||
gzifstream::attach(int fd,
|
||||
std::ios_base::openmode mode)
|
||||
{
|
||||
if (!sb.attach(fd, mode | std::ios_base::in))
|
||||
this->setstate(std::ios_base::failbit);
|
||||
else
|
||||
this->clear();
|
||||
}
|
||||
|
||||
// Close file
|
||||
void
|
||||
gzifstream::close()
|
||||
{
|
||||
if (!sb.close())
|
||||
this->setstate(std::ios_base::failbit);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
// Default constructor initializes stream buffer
|
||||
gzofstream::gzofstream()
|
||||
: std::ostream(NULL), sb()
|
||||
{ this->init(&sb); }
|
||||
|
||||
// Initialize stream buffer and open file
|
||||
gzofstream::gzofstream(const char* name,
|
||||
std::ios_base::openmode mode)
|
||||
: std::ostream(NULL), sb()
|
||||
{
|
||||
this->init(&sb);
|
||||
this->open(name, mode);
|
||||
}
|
||||
|
||||
// Initialize stream buffer and attach to file
|
||||
gzofstream::gzofstream(int fd,
|
||||
std::ios_base::openmode mode)
|
||||
: std::ostream(NULL), sb()
|
||||
{
|
||||
this->init(&sb);
|
||||
this->attach(fd, mode);
|
||||
}
|
||||
|
||||
// Open file and go into fail() state if unsuccessful
|
||||
void
|
||||
gzofstream::open(const char* name,
|
||||
std::ios_base::openmode mode)
|
||||
{
|
||||
if (!sb.open(name, mode | std::ios_base::out))
|
||||
this->setstate(std::ios_base::failbit);
|
||||
else
|
||||
this->clear();
|
||||
}
|
||||
|
||||
// Attach to file and go into fail() state if unsuccessful
|
||||
void
|
||||
gzofstream::attach(int fd,
|
||||
std::ios_base::openmode mode)
|
||||
{
|
||||
if (!sb.attach(fd, mode | std::ios_base::out))
|
||||
this->setstate(std::ios_base::failbit);
|
||||
else
|
||||
this->clear();
|
||||
}
|
||||
|
||||
// Close file
|
||||
void
|
||||
gzofstream::close()
|
||||
{
|
||||
if (!sb.close())
|
||||
this->setstate(std::ios_base::failbit);
|
||||
}
|
||||
|
|
@ -0,0 +1,466 @@
|
|||
/*
|
||||
* A C++ I/O streams interface to the zlib gz* functions
|
||||
*
|
||||
* by Ludwig Schwardt <schwardt@sun.ac.za>
|
||||
* original version by Kevin Ruland <kevin@rodin.wustl.edu>
|
||||
*
|
||||
* This version is standard-compliant and compatible with gcc 3.x.
|
||||
*/
|
||||
|
||||
#ifndef ZFSTREAM_H
|
||||
#define ZFSTREAM_H
|
||||
|
||||
#include <istream> // not iostream, since we don't need cin/cout
|
||||
#include <ostream>
|
||||
#include "zlib.h"
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/**
|
||||
* @brief Gzipped file stream buffer class.
|
||||
*
|
||||
* This class implements basic_filebuf for gzipped files. It doesn't yet support
|
||||
* seeking (allowed by zlib but slow/limited), putback and read/write access
|
||||
* (tricky). Otherwise, it attempts to be a drop-in replacement for the standard
|
||||
* file streambuf.
|
||||
*/
|
||||
class gzfilebuf : public std::streambuf
|
||||
{
|
||||
public:
|
||||
// Default constructor.
|
||||
gzfilebuf();
|
||||
|
||||
// Destructor.
|
||||
virtual
|
||||
~gzfilebuf();
|
||||
|
||||
/**
|
||||
* @brief Set compression level and strategy on the fly.
|
||||
* @param comp_level Compression level (see zlib.h for allowed values)
|
||||
* @param comp_strategy Compression strategy (see zlib.h for allowed values)
|
||||
* @return Z_OK on success, Z_STREAM_ERROR otherwise.
|
||||
*
|
||||
* Unfortunately, these parameters cannot be modified separately, as the
|
||||
* previous zfstream version assumed. Since the strategy is seldom changed,
|
||||
* it can default and setcompression(level) then becomes like the old
|
||||
* setcompressionlevel(level).
|
||||
*/
|
||||
int
|
||||
setcompression(int comp_level,
|
||||
int comp_strategy = Z_DEFAULT_STRATEGY);
|
||||
|
||||
/**
|
||||
* @brief Check if file is open.
|
||||
* @return True if file is open.
|
||||
*/
|
||||
bool
|
||||
is_open() const { return (file != NULL); }
|
||||
|
||||
/**
|
||||
* @brief Open gzipped file.
|
||||
* @param name File name.
|
||||
* @param mode Open mode flags.
|
||||
* @return @c this on success, NULL on failure.
|
||||
*/
|
||||
gzfilebuf*
|
||||
open(const char* name,
|
||||
std::ios_base::openmode mode);
|
||||
|
||||
/**
|
||||
* @brief Attach to already open gzipped file.
|
||||
* @param fd File descriptor.
|
||||
* @param mode Open mode flags.
|
||||
* @return @c this on success, NULL on failure.
|
||||
*/
|
||||
gzfilebuf*
|
||||
attach(int fd,
|
||||
std::ios_base::openmode mode);
|
||||
|
||||
/**
|
||||
* @brief Close gzipped file.
|
||||
* @return @c this on success, NULL on failure.
|
||||
*/
|
||||
gzfilebuf*
|
||||
close();
|
||||
|
||||
protected:
|
||||
/**
|
||||
* @brief Convert ios open mode int to mode string used by zlib.
|
||||
* @return True if valid mode flag combination.
|
||||
*/
|
||||
bool
|
||||
open_mode(std::ios_base::openmode mode,
|
||||
char* c_mode) const;
|
||||
|
||||
/**
|
||||
* @brief Number of characters available in stream buffer.
|
||||
* @return Number of characters.
|
||||
*
|
||||
* This indicates number of characters in get area of stream buffer.
|
||||
* These characters can be read without accessing the gzipped file.
|
||||
*/
|
||||
virtual std::streamsize
|
||||
showmanyc();
|
||||
|
||||
/**
|
||||
* @brief Fill get area from gzipped file.
|
||||
* @return First character in get area on success, EOF on error.
|
||||
*
|
||||
* This actually reads characters from gzipped file to stream
|
||||
* buffer. Always buffered.
|
||||
*/
|
||||
virtual int_type
|
||||
underflow();
|
||||
|
||||
/**
|
||||
* @brief Write put area to gzipped file.
|
||||
* @param c Extra character to add to buffer contents.
|
||||
* @return Non-EOF on success, EOF on error.
|
||||
*
|
||||
* This actually writes characters in stream buffer to
|
||||
* gzipped file. With unbuffered output this is done one
|
||||
* character at a time.
|
||||
*/
|
||||
virtual int_type
|
||||
overflow(int_type c = traits_type::eof());
|
||||
|
||||
/**
|
||||
* @brief Installs external stream buffer.
|
||||
* @param p Pointer to char buffer.
|
||||
* @param n Size of external buffer.
|
||||
* @return @c this on success, NULL on failure.
|
||||
*
|
||||
* Call setbuf(0,0) to enable unbuffered output.
|
||||
*/
|
||||
virtual std::streambuf*
|
||||
setbuf(char_type* p,
|
||||
std::streamsize n);
|
||||
|
||||
/**
|
||||
* @brief Flush stream buffer to file.
|
||||
* @return 0 on success, -1 on error.
|
||||
*
|
||||
* This calls underflow(EOF) to do the job.
|
||||
*/
|
||||
virtual int
|
||||
sync();
|
||||
|
||||
//
|
||||
// Some future enhancements
|
||||
//
|
||||
// virtual int_type uflow();
|
||||
// virtual int_type pbackfail(int_type c = traits_type::eof());
|
||||
// virtual pos_type
|
||||
// seekoff(off_type off,
|
||||
// std::ios_base::seekdir way,
|
||||
// std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
|
||||
// virtual pos_type
|
||||
// seekpos(pos_type sp,
|
||||
// std::ios_base::openmode mode = std::ios_base::in|std::ios_base::out);
|
||||
|
||||
private:
|
||||
/**
|
||||
* @brief Allocate internal buffer.
|
||||
*
|
||||
* This function is safe to call multiple times. It will ensure
|
||||
* that a proper internal buffer exists if it is required. If the
|
||||
* buffer already exists or is external, the buffer pointers will be
|
||||
* reset to their original state.
|
||||
*/
|
||||
void
|
||||
enable_buffer();
|
||||
|
||||
/**
|
||||
* @brief Destroy internal buffer.
|
||||
*
|
||||
* This function is safe to call multiple times. It will ensure
|
||||
* that the internal buffer is deallocated if it exists. In any
|
||||
* case, it will also reset the buffer pointers.
|
||||
*/
|
||||
void
|
||||
disable_buffer();
|
||||
|
||||
/**
|
||||
* Underlying file pointer.
|
||||
*/
|
||||
gzFile file;
|
||||
|
||||
/**
|
||||
* Mode in which file was opened.
|
||||
*/
|
||||
std::ios_base::openmode io_mode;
|
||||
|
||||
/**
|
||||
* @brief True if this object owns file descriptor.
|
||||
*
|
||||
* This makes the class responsible for closing the file
|
||||
* upon destruction.
|
||||
*/
|
||||
bool own_fd;
|
||||
|
||||
/**
|
||||
* @brief Stream buffer.
|
||||
*
|
||||
* For simplicity this remains allocated on the free store for the
|
||||
* entire life span of the gzfilebuf object, unless replaced by setbuf.
|
||||
*/
|
||||
char_type* buffer;
|
||||
|
||||
/**
|
||||
* @brief Stream buffer size.
|
||||
*
|
||||
* Defaults to system default buffer size (typically 8192 bytes).
|
||||
* Modified by setbuf.
|
||||
*/
|
||||
std::streamsize buffer_size;
|
||||
|
||||
/**
|
||||
* @brief True if this object owns stream buffer.
|
||||
*
|
||||
* This makes the class responsible for deleting the buffer
|
||||
* upon destruction.
|
||||
*/
|
||||
bool own_buffer;
|
||||
};
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/**
|
||||
* @brief Gzipped file input stream class.
|
||||
*
|
||||
* This class implements ifstream for gzipped files. Seeking and putback
|
||||
* is not supported yet.
|
||||
*/
|
||||
class gzifstream : public std::istream
|
||||
{
|
||||
public:
|
||||
// Default constructor
|
||||
gzifstream();
|
||||
|
||||
/**
|
||||
* @brief Construct stream on gzipped file to be opened.
|
||||
* @param name File name.
|
||||
* @param mode Open mode flags (forced to contain ios::in).
|
||||
*/
|
||||
explicit
|
||||
gzifstream(const char* name,
|
||||
std::ios_base::openmode mode = std::ios_base::in);
|
||||
|
||||
/**
|
||||
* @brief Construct stream on already open gzipped file.
|
||||
* @param fd File descriptor.
|
||||
* @param mode Open mode flags (forced to contain ios::in).
|
||||
*/
|
||||
explicit
|
||||
gzifstream(int fd,
|
||||
std::ios_base::openmode mode = std::ios_base::in);
|
||||
|
||||
/**
|
||||
* Obtain underlying stream buffer.
|
||||
*/
|
||||
gzfilebuf*
|
||||
rdbuf() const
|
||||
{ return const_cast<gzfilebuf*>(&sb); }
|
||||
|
||||
/**
|
||||
* @brief Check if file is open.
|
||||
* @return True if file is open.
|
||||
*/
|
||||
bool
|
||||
is_open() { return sb.is_open(); }
|
||||
|
||||
/**
|
||||
* @brief Open gzipped file.
|
||||
* @param name File name.
|
||||
* @param mode Open mode flags (forced to contain ios::in).
|
||||
*
|
||||
* Stream will be in state good() if file opens successfully;
|
||||
* otherwise in state fail(). This differs from the behavior of
|
||||
* ifstream, which never sets the state to good() and therefore
|
||||
* won't allow you to reuse the stream for a second file unless
|
||||
* you manually clear() the state. The choice is a matter of
|
||||
* convenience.
|
||||
*/
|
||||
void
|
||||
open(const char* name,
|
||||
std::ios_base::openmode mode = std::ios_base::in);
|
||||
|
||||
/**
|
||||
* @brief Attach to already open gzipped file.
|
||||
* @param fd File descriptor.
|
||||
* @param mode Open mode flags (forced to contain ios::in).
|
||||
*
|
||||
* Stream will be in state good() if attach succeeded; otherwise
|
||||
* in state fail().
|
||||
*/
|
||||
void
|
||||
attach(int fd,
|
||||
std::ios_base::openmode mode = std::ios_base::in);
|
||||
|
||||
/**
|
||||
* @brief Close gzipped file.
|
||||
*
|
||||
* Stream will be in state fail() if close failed.
|
||||
*/
|
||||
void
|
||||
close();
|
||||
|
||||
private:
|
||||
/**
|
||||
* Underlying stream buffer.
|
||||
*/
|
||||
gzfilebuf sb;
|
||||
};
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/**
|
||||
* @brief Gzipped file output stream class.
|
||||
*
|
||||
* This class implements ofstream for gzipped files. Seeking and putback
|
||||
* is not supported yet.
|
||||
*/
|
||||
class gzofstream : public std::ostream
|
||||
{
|
||||
public:
|
||||
// Default constructor
|
||||
gzofstream();
|
||||
|
||||
/**
|
||||
* @brief Construct stream on gzipped file to be opened.
|
||||
* @param name File name.
|
||||
* @param mode Open mode flags (forced to contain ios::out).
|
||||
*/
|
||||
explicit
|
||||
gzofstream(const char* name,
|
||||
std::ios_base::openmode mode = std::ios_base::out);
|
||||
|
||||
/**
|
||||
* @brief Construct stream on already open gzipped file.
|
||||
* @param fd File descriptor.
|
||||
* @param mode Open mode flags (forced to contain ios::out).
|
||||
*/
|
||||
explicit
|
||||
gzofstream(int fd,
|
||||
std::ios_base::openmode mode = std::ios_base::out);
|
||||
|
||||
/**
|
||||
* Obtain underlying stream buffer.
|
||||
*/
|
||||
gzfilebuf*
|
||||
rdbuf() const
|
||||
{ return const_cast<gzfilebuf*>(&sb); }
|
||||
|
||||
/**
|
||||
* @brief Check if file is open.
|
||||
* @return True if file is open.
|
||||
*/
|
||||
bool
|
||||
is_open() { return sb.is_open(); }
|
||||
|
||||
/**
|
||||
* @brief Open gzipped file.
|
||||
* @param name File name.
|
||||
* @param mode Open mode flags (forced to contain ios::out).
|
||||
*
|
||||
* Stream will be in state good() if file opens successfully;
|
||||
* otherwise in state fail(). This differs from the behavior of
|
||||
* ofstream, which never sets the state to good() and therefore
|
||||
* won't allow you to reuse the stream for a second file unless
|
||||
* you manually clear() the state. The choice is a matter of
|
||||
* convenience.
|
||||
*/
|
||||
void
|
||||
open(const char* name,
|
||||
std::ios_base::openmode mode = std::ios_base::out);
|
||||
|
||||
/**
|
||||
* @brief Attach to already open gzipped file.
|
||||
* @param fd File descriptor.
|
||||
* @param mode Open mode flags (forced to contain ios::out).
|
||||
*
|
||||
* Stream will be in state good() if attach succeeded; otherwise
|
||||
* in state fail().
|
||||
*/
|
||||
void
|
||||
attach(int fd,
|
||||
std::ios_base::openmode mode = std::ios_base::out);
|
||||
|
||||
/**
|
||||
* @brief Close gzipped file.
|
||||
*
|
||||
* Stream will be in state fail() if close failed.
|
||||
*/
|
||||
void
|
||||
close();
|
||||
|
||||
private:
|
||||
/**
|
||||
* Underlying stream buffer.
|
||||
*/
|
||||
gzfilebuf sb;
|
||||
};
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/**
|
||||
* @brief Gzipped file output stream manipulator class.
|
||||
*
|
||||
* This class defines a two-argument manipulator for gzofstream. It is used
|
||||
* as base for the setcompression(int,int) manipulator.
|
||||
*/
|
||||
template<typename T1, typename T2>
|
||||
class gzomanip2
|
||||
{
|
||||
public:
|
||||
// Allows insertor to peek at internals
|
||||
template <typename Ta, typename Tb>
|
||||
friend gzofstream&
|
||||
operator<<(gzofstream&,
|
||||
const gzomanip2<Ta,Tb>&);
|
||||
|
||||
// Constructor
|
||||
gzomanip2(gzofstream& (*f)(gzofstream&, T1, T2),
|
||||
T1 v1,
|
||||
T2 v2);
|
||||
private:
|
||||
// Underlying manipulator function
|
||||
gzofstream&
|
||||
(*func)(gzofstream&, T1, T2);
|
||||
|
||||
// Arguments for manipulator function
|
||||
T1 val1;
|
||||
T2 val2;
|
||||
};
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
// Manipulator function thunks through to stream buffer
|
||||
inline gzofstream&
|
||||
setcompression(gzofstream &gzs, int l, int s = Z_DEFAULT_STRATEGY)
|
||||
{
|
||||
(gzs.rdbuf())->setcompression(l, s);
|
||||
return gzs;
|
||||
}
|
||||
|
||||
// Manipulator constructor stores arguments
|
||||
template<typename T1, typename T2>
|
||||
inline
|
||||
gzomanip2<T1,T2>::gzomanip2(gzofstream &(*f)(gzofstream &, T1, T2),
|
||||
T1 v1,
|
||||
T2 v2)
|
||||
: func(f), val1(v1), val2(v2)
|
||||
{ }
|
||||
|
||||
// Insertor applies underlying manipulator function to stream
|
||||
template<typename T1, typename T2>
|
||||
inline gzofstream&
|
||||
operator<<(gzofstream& s, const gzomanip2<T1,T2>& m)
|
||||
{ return (*m.func)(s, m.val1, m.val2); }
|
||||
|
||||
// Insert this onto stream to simplify setting of compression level
|
||||
inline gzomanip2<int,int>
|
||||
setcompression(int l, int s = Z_DEFAULT_STRATEGY)
|
||||
{ return gzomanip2<int,int>(&setcompression, l, s); }
|
||||
|
||||
#endif // ZFSTREAM_H
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
ml64.exe /Flinffasx64 /c /Zi inffasx64.asm
|
||||
ml64.exe /Flgvmat64 /c /Zi gvmat64.asm
|
||||
|
|
@ -0,0 +1,553 @@
|
|||
;uInt longest_match_x64(
|
||||
; deflate_state *s,
|
||||
; IPos cur_match); /* current match */
|
||||
|
||||
; gvmat64.asm -- Asm portion of the optimized longest_match for 32 bits x86_64
|
||||
; (AMD64 on Athlon 64, Opteron, Phenom
|
||||
; and Intel EM64T on Pentium 4 with EM64T, Pentium D, Core 2 Duo, Core I5/I7)
|
||||
; Copyright (C) 1995-2010 Jean-loup Gailly, Brian Raiter and Gilles Vollant.
|
||||
;
|
||||
; File written by Gilles Vollant, by converting to assembly the longest_match
|
||||
; from Jean-loup Gailly in deflate.c of zLib and infoZip zip.
|
||||
;
|
||||
; and by taking inspiration on asm686 with masm, optimised assembly code
|
||||
; from Brian Raiter, written 1998
|
||||
;
|
||||
; This software is provided 'as-is', without any express or implied
|
||||
; warranty. In no event will the authors be held liable for any damages
|
||||
; arising from the use of this software.
|
||||
;
|
||||
; Permission is granted to anyone to use this software for any purpose,
|
||||
; including commercial applications, and to alter it and redistribute it
|
||||
; freely, subject to the following restrictions:
|
||||
;
|
||||
; 1. The origin of this software must not be misrepresented; you must not
|
||||
; claim that you wrote the original software. If you use this software
|
||||
; in a product, an acknowledgment in the product documentation would be
|
||||
; appreciated but is not required.
|
||||
; 2. Altered source versions must be plainly marked as such, and must not be
|
||||
; misrepresented as being the original software
|
||||
; 3. This notice may not be removed or altered from any source distribution.
|
||||
;
|
||||
;
|
||||
;
|
||||
; http://www.zlib.net
|
||||
; http://www.winimage.com/zLibDll
|
||||
; http://www.muppetlabs.com/~breadbox/software/assembly.html
|
||||
;
|
||||
; to compile this file for infozip Zip, I use option:
|
||||
; ml64.exe /Flgvmat64 /c /Zi /DINFOZIP gvmat64.asm
|
||||
;
|
||||
; to compile this file for zLib, I use option:
|
||||
; ml64.exe /Flgvmat64 /c /Zi gvmat64.asm
|
||||
; Be carrefull to adapt zlib1222add below to your version of zLib
|
||||
; (if you use a version of zLib before 1.0.4 or after 1.2.2.2, change
|
||||
; value of zlib1222add later)
|
||||
;
|
||||
; This file compile with Microsoft Macro Assembler (x64) for AMD64
|
||||
;
|
||||
; ml64.exe is given with Visual Studio 2005/2008/2010 and Windows WDK
|
||||
;
|
||||
; (you can get Windows WDK with ml64 for AMD64 from
|
||||
; http://www.microsoft.com/whdc/Devtools/wdk/default.mspx for low price)
|
||||
;
|
||||
|
||||
|
||||
;uInt longest_match(s, cur_match)
|
||||
; deflate_state *s;
|
||||
; IPos cur_match; /* current match */
|
||||
.code
|
||||
longest_match PROC
|
||||
|
||||
|
||||
;LocalVarsSize equ 88
|
||||
LocalVarsSize equ 72
|
||||
|
||||
; register used : rax,rbx,rcx,rdx,rsi,rdi,r8,r9,r10,r11,r12
|
||||
; free register : r14,r15
|
||||
; register can be saved : rsp
|
||||
|
||||
chainlenwmask equ rsp + 8 - LocalVarsSize ; high word: current chain len
|
||||
; low word: s->wmask
|
||||
;window equ rsp + xx - LocalVarsSize ; local copy of s->window ; stored in r10
|
||||
;windowbestlen equ rsp + xx - LocalVarsSize ; s->window + bestlen , use r10+r11
|
||||
;scanstart equ rsp + xx - LocalVarsSize ; first two bytes of string ; stored in r12w
|
||||
;scanend equ rsp + xx - LocalVarsSize ; last two bytes of string use ebx
|
||||
;scanalign equ rsp + xx - LocalVarsSize ; dword-misalignment of string r13
|
||||
;bestlen equ rsp + xx - LocalVarsSize ; size of best match so far -> r11d
|
||||
;scan equ rsp + xx - LocalVarsSize ; ptr to string wanting match -> r9
|
||||
IFDEF INFOZIP
|
||||
ELSE
|
||||
nicematch equ (rsp + 16 - LocalVarsSize) ; a good enough match size
|
||||
ENDIF
|
||||
|
||||
save_rdi equ rsp + 24 - LocalVarsSize
|
||||
save_rsi equ rsp + 32 - LocalVarsSize
|
||||
save_rbx equ rsp + 40 - LocalVarsSize
|
||||
save_rbp equ rsp + 48 - LocalVarsSize
|
||||
save_r12 equ rsp + 56 - LocalVarsSize
|
||||
save_r13 equ rsp + 64 - LocalVarsSize
|
||||
;save_r14 equ rsp + 72 - LocalVarsSize
|
||||
;save_r15 equ rsp + 80 - LocalVarsSize
|
||||
|
||||
|
||||
; summary of register usage
|
||||
; scanend ebx
|
||||
; scanendw bx
|
||||
; chainlenwmask edx
|
||||
; curmatch rsi
|
||||
; curmatchd esi
|
||||
; windowbestlen r8
|
||||
; scanalign r9
|
||||
; scanalignd r9d
|
||||
; window r10
|
||||
; bestlen r11
|
||||
; bestlend r11d
|
||||
; scanstart r12d
|
||||
; scanstartw r12w
|
||||
; scan r13
|
||||
; nicematch r14d
|
||||
; limit r15
|
||||
; limitd r15d
|
||||
; prev rcx
|
||||
|
||||
; all the +4 offsets are due to the addition of pending_buf_size (in zlib
|
||||
; in the deflate_state structure since the asm code was first written
|
||||
; (if you compile with zlib 1.0.4 or older, remove the +4).
|
||||
; Note : these value are good with a 8 bytes boundary pack structure
|
||||
|
||||
|
||||
MAX_MATCH equ 258
|
||||
MIN_MATCH equ 3
|
||||
MIN_LOOKAHEAD equ (MAX_MATCH+MIN_MATCH+1)
|
||||
|
||||
|
||||
;;; Offsets for fields in the deflate_state structure. These numbers
|
||||
;;; are calculated from the definition of deflate_state, with the
|
||||
;;; assumption that the compiler will dword-align the fields. (Thus,
|
||||
;;; changing the definition of deflate_state could easily cause this
|
||||
;;; program to crash horribly, without so much as a warning at
|
||||
;;; compile time. Sigh.)
|
||||
|
||||
; all the +zlib1222add offsets are due to the addition of fields
|
||||
; in zlib in the deflate_state structure since the asm code was first written
|
||||
; (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
|
||||
; (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
|
||||
; if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
|
||||
|
||||
|
||||
IFDEF INFOZIP
|
||||
|
||||
_DATA SEGMENT
|
||||
COMM window_size:DWORD
|
||||
; WMask ; 7fff
|
||||
COMM window:BYTE:010040H
|
||||
COMM prev:WORD:08000H
|
||||
; MatchLen : unused
|
||||
; PrevMatch : unused
|
||||
COMM strstart:DWORD
|
||||
COMM match_start:DWORD
|
||||
; Lookahead : ignore
|
||||
COMM prev_length:DWORD ; PrevLen
|
||||
COMM max_chain_length:DWORD
|
||||
COMM good_match:DWORD
|
||||
COMM nice_match:DWORD
|
||||
prev_ad equ OFFSET prev
|
||||
window_ad equ OFFSET window
|
||||
nicematch equ nice_match
|
||||
_DATA ENDS
|
||||
WMask equ 07fffh
|
||||
|
||||
ELSE
|
||||
|
||||
IFNDEF zlib1222add
|
||||
zlib1222add equ 8
|
||||
ENDIF
|
||||
dsWSize equ 56+zlib1222add+(zlib1222add/2)
|
||||
dsWMask equ 64+zlib1222add+(zlib1222add/2)
|
||||
dsWindow equ 72+zlib1222add
|
||||
dsPrev equ 88+zlib1222add
|
||||
dsMatchLen equ 128+zlib1222add
|
||||
dsPrevMatch equ 132+zlib1222add
|
||||
dsStrStart equ 140+zlib1222add
|
||||
dsMatchStart equ 144+zlib1222add
|
||||
dsLookahead equ 148+zlib1222add
|
||||
dsPrevLen equ 152+zlib1222add
|
||||
dsMaxChainLen equ 156+zlib1222add
|
||||
dsGoodMatch equ 172+zlib1222add
|
||||
dsNiceMatch equ 176+zlib1222add
|
||||
|
||||
window_size equ [ rcx + dsWSize]
|
||||
WMask equ [ rcx + dsWMask]
|
||||
window_ad equ [ rcx + dsWindow]
|
||||
prev_ad equ [ rcx + dsPrev]
|
||||
strstart equ [ rcx + dsStrStart]
|
||||
match_start equ [ rcx + dsMatchStart]
|
||||
Lookahead equ [ rcx + dsLookahead] ; 0ffffffffh on infozip
|
||||
prev_length equ [ rcx + dsPrevLen]
|
||||
max_chain_length equ [ rcx + dsMaxChainLen]
|
||||
good_match equ [ rcx + dsGoodMatch]
|
||||
nice_match equ [ rcx + dsNiceMatch]
|
||||
ENDIF
|
||||
|
||||
; parameter 1 in r8(deflate state s), param 2 in rdx (cur match)
|
||||
|
||||
; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and
|
||||
; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
|
||||
;
|
||||
; All registers must be preserved across the call, except for
|
||||
; rax, rcx, rdx, r8, r9, r10, and r11, which are scratch.
|
||||
|
||||
|
||||
|
||||
;;; Save registers that the compiler may be using, and adjust esp to
|
||||
;;; make room for our stack frame.
|
||||
|
||||
|
||||
;;; Retrieve the function arguments. r8d will hold cur_match
|
||||
;;; throughout the entire function. edx will hold the pointer to the
|
||||
;;; deflate_state structure during the function's setup (before
|
||||
;;; entering the main loop.
|
||||
|
||||
; parameter 1 in rcx (deflate_state* s), param 2 in edx -> r8 (cur match)
|
||||
|
||||
; this clear high 32 bits of r8, which can be garbage in both r8 and rdx
|
||||
|
||||
mov [save_rdi],rdi
|
||||
mov [save_rsi],rsi
|
||||
mov [save_rbx],rbx
|
||||
mov [save_rbp],rbp
|
||||
IFDEF INFOZIP
|
||||
mov r8d,ecx
|
||||
ELSE
|
||||
mov r8d,edx
|
||||
ENDIF
|
||||
mov [save_r12],r12
|
||||
mov [save_r13],r13
|
||||
; mov [save_r14],r14
|
||||
; mov [save_r15],r15
|
||||
|
||||
|
||||
;;; uInt wmask = s->w_mask;
|
||||
;;; unsigned chain_length = s->max_chain_length;
|
||||
;;; if (s->prev_length >= s->good_match) {
|
||||
;;; chain_length >>= 2;
|
||||
;;; }
|
||||
|
||||
mov edi, prev_length
|
||||
mov esi, good_match
|
||||
mov eax, WMask
|
||||
mov ebx, max_chain_length
|
||||
cmp edi, esi
|
||||
jl LastMatchGood
|
||||
shr ebx, 2
|
||||
LastMatchGood:
|
||||
|
||||
;;; chainlen is decremented once beforehand so that the function can
|
||||
;;; use the sign flag instead of the zero flag for the exit test.
|
||||
;;; It is then shifted into the high word, to make room for the wmask
|
||||
;;; value, which it will always accompany.
|
||||
|
||||
dec ebx
|
||||
shl ebx, 16
|
||||
or ebx, eax
|
||||
|
||||
;;; on zlib only
|
||||
;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
|
||||
|
||||
IFDEF INFOZIP
|
||||
mov [chainlenwmask], ebx
|
||||
; on infozip nice_match = [nice_match]
|
||||
ELSE
|
||||
mov eax, nice_match
|
||||
mov [chainlenwmask], ebx
|
||||
mov r10d, Lookahead
|
||||
cmp r10d, eax
|
||||
cmovnl r10d, eax
|
||||
mov [nicematch],r10d
|
||||
ENDIF
|
||||
|
||||
;;; register Bytef *scan = s->window + s->strstart;
|
||||
mov r10, window_ad
|
||||
mov ebp, strstart
|
||||
lea r13, [r10 + rbp]
|
||||
|
||||
;;; Determine how many bytes the scan ptr is off from being
|
||||
;;; dword-aligned.
|
||||
|
||||
mov r9,r13
|
||||
neg r13
|
||||
and r13,3
|
||||
|
||||
;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
|
||||
;;; s->strstart - (IPos)MAX_DIST(s) : NIL;
|
||||
IFDEF INFOZIP
|
||||
mov eax,07efah ; MAX_DIST = (WSIZE-MIN_LOOKAHEAD) (0x8000-(3+8+1))
|
||||
ELSE
|
||||
mov eax, window_size
|
||||
sub eax, MIN_LOOKAHEAD
|
||||
ENDIF
|
||||
xor edi,edi
|
||||
sub ebp, eax
|
||||
|
||||
mov r11d, prev_length
|
||||
|
||||
cmovng ebp,edi
|
||||
|
||||
;;; int best_len = s->prev_length;
|
||||
|
||||
|
||||
;;; Store the sum of s->window + best_len in esi locally, and in esi.
|
||||
|
||||
lea rsi,[r10+r11]
|
||||
|
||||
;;; register ush scan_start = *(ushf*)scan;
|
||||
;;; register ush scan_end = *(ushf*)(scan+best_len-1);
|
||||
;;; Posf *prev = s->prev;
|
||||
|
||||
movzx r12d,word ptr [r9]
|
||||
movzx ebx, word ptr [r9 + r11 - 1]
|
||||
|
||||
mov rdi, prev_ad
|
||||
|
||||
;;; Jump into the main loop.
|
||||
|
||||
mov edx, [chainlenwmask]
|
||||
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
jz LookupLoopIsZero
|
||||
|
||||
LookupLoop1:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
jbe LeaveNow
|
||||
sub edx, 00010000h
|
||||
js LeaveNow
|
||||
|
||||
LoopEntry1:
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
jz LookupLoopIsZero
|
||||
|
||||
LookupLoop2:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
jbe LeaveNow
|
||||
sub edx, 00010000h
|
||||
js LeaveNow
|
||||
|
||||
LoopEntry2:
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
jz LookupLoopIsZero
|
||||
|
||||
LookupLoop4:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
jbe LeaveNow
|
||||
sub edx, 00010000h
|
||||
js LeaveNow
|
||||
|
||||
LoopEntry4:
|
||||
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
jnz LookupLoop1
|
||||
jmp LookupLoopIsZero
|
||||
|
||||
|
||||
;;; do {
|
||||
;;; match = s->window + cur_match;
|
||||
;;; if (*(ushf*)(match+best_len-1) != scan_end ||
|
||||
;;; *(ushf*)match != scan_start) continue;
|
||||
;;; [...]
|
||||
;;; } while ((cur_match = prev[cur_match & wmask]) > limit
|
||||
;;; && --chain_length != 0);
|
||||
;;;
|
||||
;;; Here is the inner loop of the function. The function will spend the
|
||||
;;; majority of its time in this loop, and majority of that time will
|
||||
;;; be spent in the first ten instructions.
|
||||
;;;
|
||||
;;; Within this loop:
|
||||
;;; ebx = scanend
|
||||
;;; r8d = curmatch
|
||||
;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
|
||||
;;; esi = windowbestlen - i.e., (window + bestlen)
|
||||
;;; edi = prev
|
||||
;;; ebp = limit
|
||||
|
||||
LookupLoop:
|
||||
and r8d, edx
|
||||
|
||||
movzx r8d, word ptr [rdi + r8*2]
|
||||
cmp r8d, ebp
|
||||
jbe LeaveNow
|
||||
sub edx, 00010000h
|
||||
js LeaveNow
|
||||
|
||||
LoopEntry:
|
||||
|
||||
cmp bx,word ptr [rsi + r8 - 1]
|
||||
jnz LookupLoop1
|
||||
LookupLoopIsZero:
|
||||
cmp r12w, word ptr [r10 + r8]
|
||||
jnz LookupLoop1
|
||||
|
||||
|
||||
;;; Store the current value of chainlen.
|
||||
mov [chainlenwmask], edx
|
||||
|
||||
;;; Point edi to the string under scrutiny, and esi to the string we
|
||||
;;; are hoping to match it up with. In actuality, esi and edi are
|
||||
;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is
|
||||
;;; initialized to -(MAX_MATCH_8 - scanalign).
|
||||
|
||||
lea rsi,[r8+r10]
|
||||
mov rdx, 0fffffffffffffef8h; -(MAX_MATCH_8)
|
||||
lea rsi, [rsi + r13 + 0108h] ;MAX_MATCH_8]
|
||||
lea rdi, [r9 + r13 + 0108h] ;MAX_MATCH_8]
|
||||
|
||||
prefetcht1 [rsi+rdx]
|
||||
prefetcht1 [rdi+rdx]
|
||||
|
||||
|
||||
;;; Test the strings for equality, 8 bytes at a time. At the end,
|
||||
;;; adjust rdx so that it is offset to the exact byte that mismatched.
|
||||
;;;
|
||||
;;; We already know at this point that the first three bytes of the
|
||||
;;; strings match each other, and they can be safely passed over before
|
||||
;;; starting the compare loop. So what this code does is skip over 0-3
|
||||
;;; bytes, as much as necessary in order to dword-align the edi
|
||||
;;; pointer. (rsi will still be misaligned three times out of four.)
|
||||
;;;
|
||||
;;; It should be confessed that this loop usually does not represent
|
||||
;;; much of the total running time. Replacing it with a more
|
||||
;;; straightforward "rep cmpsb" would not drastically degrade
|
||||
;;; performance.
|
||||
|
||||
|
||||
LoopCmps:
|
||||
mov rax, [rsi + rdx]
|
||||
xor rax, [rdi + rdx]
|
||||
jnz LeaveLoopCmps
|
||||
|
||||
mov rax, [rsi + rdx + 8]
|
||||
xor rax, [rdi + rdx + 8]
|
||||
jnz LeaveLoopCmps8
|
||||
|
||||
|
||||
mov rax, [rsi + rdx + 8+8]
|
||||
xor rax, [rdi + rdx + 8+8]
|
||||
jnz LeaveLoopCmps16
|
||||
|
||||
add rdx,8+8+8
|
||||
|
||||
jnz short LoopCmps
|
||||
jmp short LenMaximum
|
||||
LeaveLoopCmps16: add rdx,8
|
||||
LeaveLoopCmps8: add rdx,8
|
||||
LeaveLoopCmps:
|
||||
|
||||
test eax, 0000FFFFh
|
||||
jnz LenLower
|
||||
|
||||
test eax,0ffffffffh
|
||||
|
||||
jnz LenLower32
|
||||
|
||||
add rdx,4
|
||||
shr rax,32
|
||||
or ax,ax
|
||||
jnz LenLower
|
||||
|
||||
LenLower32:
|
||||
shr eax,16
|
||||
add rdx,2
|
||||
LenLower: sub al, 1
|
||||
adc rdx, 0
|
||||
;;; Calculate the length of the match. If it is longer than MAX_MATCH,
|
||||
;;; then automatically accept it as the best possible match and leave.
|
||||
|
||||
lea rax, [rdi + rdx]
|
||||
sub rax, r9
|
||||
cmp eax, MAX_MATCH
|
||||
jge LenMaximum
|
||||
|
||||
;;; If the length of the match is not longer than the best match we
|
||||
;;; have so far, then forget it and return to the lookup loop.
|
||||
;///////////////////////////////////
|
||||
|
||||
cmp eax, r11d
|
||||
jg LongerMatch
|
||||
|
||||
lea rsi,[r10+r11]
|
||||
|
||||
mov rdi, prev_ad
|
||||
mov edx, [chainlenwmask]
|
||||
jmp LookupLoop
|
||||
|
||||
;;; s->match_start = cur_match;
|
||||
;;; best_len = len;
|
||||
;;; if (len >= nice_match) break;
|
||||
;;; scan_end = *(ushf*)(scan+best_len-1);
|
||||
|
||||
LongerMatch:
|
||||
mov r11d, eax
|
||||
mov match_start, r8d
|
||||
cmp eax, [nicematch]
|
||||
jge LeaveNow
|
||||
|
||||
lea rsi,[r10+rax]
|
||||
|
||||
movzx ebx, word ptr [r9 + rax - 1]
|
||||
mov rdi, prev_ad
|
||||
mov edx, [chainlenwmask]
|
||||
jmp LookupLoop
|
||||
|
||||
;;; Accept the current string, with the maximum possible length.
|
||||
|
||||
LenMaximum:
|
||||
mov r11d,MAX_MATCH
|
||||
mov match_start, r8d
|
||||
|
||||
;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
|
||||
;;; return s->lookahead;
|
||||
|
||||
LeaveNow:
|
||||
IFDEF INFOZIP
|
||||
mov eax,r11d
|
||||
ELSE
|
||||
mov eax, Lookahead
|
||||
cmp r11d, eax
|
||||
cmovng eax, r11d
|
||||
ENDIF
|
||||
|
||||
;;; Restore the stack and return from whence we came.
|
||||
|
||||
|
||||
mov rsi,[save_rsi]
|
||||
mov rdi,[save_rdi]
|
||||
mov rbx,[save_rbx]
|
||||
mov rbp,[save_rbp]
|
||||
mov r12,[save_r12]
|
||||
mov r13,[save_r13]
|
||||
; mov r14,[save_r14]
|
||||
; mov r15,[save_r15]
|
||||
|
||||
|
||||
ret 0
|
||||
; please don't remove this string !
|
||||
; Your can freely use gvmat64 in any free or commercial app
|
||||
; but it is far better don't remove the string in the binary!
|
||||
db 0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998, converted to amd 64 by Gilles Vollant 2005",0dh,0ah,0
|
||||
longest_match ENDP
|
||||
|
||||
match_init PROC
|
||||
ret 0
|
||||
match_init ENDP
|
||||
|
||||
|
||||
END
|
||||
|
|
@ -0,0 +1,186 @@
|
|||
/* inffas8664.c is a hand tuned assembler version of inffast.c - fast decoding
|
||||
* version for AMD64 on Windows using Microsoft C compiler
|
||||
*
|
||||
* Copyright (C) 1995-2003 Mark Adler
|
||||
* For conditions of distribution and use, see copyright notice in zlib.h
|
||||
*
|
||||
* Copyright (C) 2003 Chris Anderson <christop@charm.net>
|
||||
* Please use the copyright conditions above.
|
||||
*
|
||||
* 2005 - Adaptation to Microsoft C Compiler for AMD64 by Gilles Vollant
|
||||
*
|
||||
* inffas8664.c call function inffas8664fnc in inffasx64.asm
|
||||
* inffasx64.asm is automatically convert from AMD64 portion of inffas86.c
|
||||
*
|
||||
* Dec-29-2003 -- I added AMD64 inflate asm support. This version is also
|
||||
* slightly quicker on x86 systems because, instead of using rep movsb to copy
|
||||
* data, it uses rep movsw, which moves data in 2-byte chunks instead of single
|
||||
* bytes. I've tested the AMD64 code on a Fedora Core 1 + the x86_64 updates
|
||||
* from http://fedora.linux.duke.edu/fc1_x86_64
|
||||
* which is running on an Athlon 64 3000+ / Gigabyte GA-K8VT800M system with
|
||||
* 1GB ram. The 64-bit version is about 4% faster than the 32-bit version,
|
||||
* when decompressing mozilla-source-1.3.tar.gz.
|
||||
*
|
||||
* Mar-13-2003 -- Most of this is derived from inffast.S which is derived from
|
||||
* the gcc -S output of zlib-1.2.0/inffast.c. Zlib-1.2.0 is in beta release at
|
||||
* the moment. I have successfully compiled and tested this code with gcc2.96,
|
||||
* gcc3.2, icc5.0, msvc6.0. It is very close to the speed of inffast.S
|
||||
* compiled with gcc -DNO_MMX, but inffast.S is still faster on the P3 with MMX
|
||||
* enabled. I will attempt to merge the MMX code into this version. Newer
|
||||
* versions of this and inffast.S can be found at
|
||||
* http://www.eetbeetee.com/zlib/ and http://www.charm.net/~christop/zlib/
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include "zutil.h"
|
||||
#include "inftrees.h"
|
||||
#include "inflate.h"
|
||||
#include "inffast.h"
|
||||
|
||||
/* Mark Adler's comments from inffast.c: */
|
||||
|
||||
/*
|
||||
Decode literal, length, and distance codes and write out the resulting
|
||||
literal and match bytes until either not enough input or output is
|
||||
available, an end-of-block is encountered, or a data error is encountered.
|
||||
When large enough input and output buffers are supplied to inflate(), for
|
||||
example, a 16K input buffer and a 64K output buffer, more than 95% of the
|
||||
inflate execution time is spent in this routine.
|
||||
|
||||
Entry assumptions:
|
||||
|
||||
state->mode == LEN
|
||||
strm->avail_in >= 6
|
||||
strm->avail_out >= 258
|
||||
start >= strm->avail_out
|
||||
state->bits < 8
|
||||
|
||||
On return, state->mode is one of:
|
||||
|
||||
LEN -- ran out of enough output space or enough available input
|
||||
TYPE -- reached end of block code, inflate() to interpret next block
|
||||
BAD -- error in block data
|
||||
|
||||
Notes:
|
||||
|
||||
- The maximum input bits used by a length/distance pair is 15 bits for the
|
||||
length code, 5 bits for the length extra, 15 bits for the distance code,
|
||||
and 13 bits for the distance extra. This totals 48 bits, or six bytes.
|
||||
Therefore if strm->avail_in >= 6, then there is enough input to avoid
|
||||
checking for available input while decoding.
|
||||
|
||||
- The maximum bytes that a single length/distance pair can output is 258
|
||||
bytes, which is the maximum length that can be coded. inflate_fast()
|
||||
requires strm->avail_out >= 258 for each loop to avoid checking for
|
||||
output space.
|
||||
*/
|
||||
|
||||
|
||||
|
||||
typedef struct inffast_ar {
|
||||
/* 64 32 x86 x86_64 */
|
||||
/* ar offset register */
|
||||
/* 0 0 */ void *esp; /* esp save */
|
||||
/* 8 4 */ void *ebp; /* ebp save */
|
||||
/* 16 8 */ unsigned char FAR *in; /* esi rsi local strm->next_in */
|
||||
/* 24 12 */ unsigned char FAR *last; /* r9 while in < last */
|
||||
/* 32 16 */ unsigned char FAR *out; /* edi rdi local strm->next_out */
|
||||
/* 40 20 */ unsigned char FAR *beg; /* inflate()'s init next_out */
|
||||
/* 48 24 */ unsigned char FAR *end; /* r10 while out < end */
|
||||
/* 56 28 */ unsigned char FAR *window;/* size of window, wsize!=0 */
|
||||
/* 64 32 */ code const FAR *lcode; /* ebp rbp local strm->lencode */
|
||||
/* 72 36 */ code const FAR *dcode; /* r11 local strm->distcode */
|
||||
/* 80 40 */ size_t /*unsigned long */hold; /* edx rdx local strm->hold */
|
||||
/* 88 44 */ unsigned bits; /* ebx rbx local strm->bits */
|
||||
/* 92 48 */ unsigned wsize; /* window size */
|
||||
/* 96 52 */ unsigned write; /* window write index */
|
||||
/*100 56 */ unsigned lmask; /* r12 mask for lcode */
|
||||
/*104 60 */ unsigned dmask; /* r13 mask for dcode */
|
||||
/*108 64 */ unsigned len; /* r14 match length */
|
||||
/*112 68 */ unsigned dist; /* r15 match distance */
|
||||
/*116 72 */ unsigned status; /* set when state chng*/
|
||||
} type_ar;
|
||||
#ifdef ASMINF
|
||||
|
||||
void inflate_fast(strm, start)
|
||||
z_streamp strm;
|
||||
unsigned start; /* inflate()'s starting value for strm->avail_out */
|
||||
{
|
||||
struct inflate_state FAR *state;
|
||||
type_ar ar;
|
||||
void inffas8664fnc(struct inffast_ar * par);
|
||||
|
||||
|
||||
|
||||
#if (defined( __GNUC__ ) && defined( __amd64__ ) && ! defined( __i386 )) || (defined(_MSC_VER) && defined(_M_AMD64))
|
||||
#define PAD_AVAIL_IN 6
|
||||
#define PAD_AVAIL_OUT 258
|
||||
#else
|
||||
#define PAD_AVAIL_IN 5
|
||||
#define PAD_AVAIL_OUT 257
|
||||
#endif
|
||||
|
||||
/* copy state to local variables */
|
||||
state = (struct inflate_state FAR *)strm->state;
|
||||
|
||||
ar.in = strm->next_in;
|
||||
ar.last = ar.in + (strm->avail_in - PAD_AVAIL_IN);
|
||||
ar.out = strm->next_out;
|
||||
ar.beg = ar.out - (start - strm->avail_out);
|
||||
ar.end = ar.out + (strm->avail_out - PAD_AVAIL_OUT);
|
||||
ar.wsize = state->wsize;
|
||||
ar.write = state->wnext;
|
||||
ar.window = state->window;
|
||||
ar.hold = state->hold;
|
||||
ar.bits = state->bits;
|
||||
ar.lcode = state->lencode;
|
||||
ar.dcode = state->distcode;
|
||||
ar.lmask = (1U << state->lenbits) - 1;
|
||||
ar.dmask = (1U << state->distbits) - 1;
|
||||
|
||||
/* decode literals and length/distances until end-of-block or not enough
|
||||
input data or output space */
|
||||
|
||||
/* align in on 1/2 hold size boundary */
|
||||
while (((size_t)(void *)ar.in & (sizeof(ar.hold) / 2 - 1)) != 0) {
|
||||
ar.hold += (unsigned long)*ar.in++ << ar.bits;
|
||||
ar.bits += 8;
|
||||
}
|
||||
|
||||
inffas8664fnc(&ar);
|
||||
|
||||
if (ar.status > 1) {
|
||||
if (ar.status == 2)
|
||||
strm->msg = "invalid literal/length code";
|
||||
else if (ar.status == 3)
|
||||
strm->msg = "invalid distance code";
|
||||
else
|
||||
strm->msg = "invalid distance too far back";
|
||||
state->mode = BAD;
|
||||
}
|
||||
else if ( ar.status == 1 ) {
|
||||
state->mode = TYPE;
|
||||
}
|
||||
|
||||
/* return unused bytes (on entry, bits < 8, so in won't go too far back) */
|
||||
ar.len = ar.bits >> 3;
|
||||
ar.in -= ar.len;
|
||||
ar.bits -= ar.len << 3;
|
||||
ar.hold &= (1U << ar.bits) - 1;
|
||||
|
||||
/* update state and return */
|
||||
strm->next_in = ar.in;
|
||||
strm->next_out = ar.out;
|
||||
strm->avail_in = (unsigned)(ar.in < ar.last ?
|
||||
PAD_AVAIL_IN + (ar.last - ar.in) :
|
||||
PAD_AVAIL_IN - (ar.in - ar.last));
|
||||
strm->avail_out = (unsigned)(ar.out < ar.end ?
|
||||
PAD_AVAIL_OUT + (ar.end - ar.out) :
|
||||
PAD_AVAIL_OUT - (ar.out - ar.end));
|
||||
state->hold = (unsigned long)ar.hold;
|
||||
state->bits = ar.bits;
|
||||
return;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,396 @@
|
|||
; inffasx64.asm is a hand tuned assembler version of inffast.c - fast decoding
|
||||
; version for AMD64 on Windows using Microsoft C compiler
|
||||
;
|
||||
; inffasx64.asm is automatically convert from AMD64 portion of inffas86.c
|
||||
; inffasx64.asm is called by inffas8664.c, which contain more info.
|
||||
|
||||
|
||||
; to compile this file, I use option
|
||||
; ml64.exe /Flinffasx64 /c /Zi inffasx64.asm
|
||||
; with Microsoft Macro Assembler (x64) for AMD64
|
||||
;
|
||||
|
||||
; This file compile with Microsoft Macro Assembler (x64) for AMD64
|
||||
;
|
||||
; ml64.exe is given with Visual Studio 2005/2008/2010 and Windows WDK
|
||||
;
|
||||
; (you can get Windows WDK with ml64 for AMD64 from
|
||||
; http://www.microsoft.com/whdc/Devtools/wdk/default.mspx for low price)
|
||||
;
|
||||
|
||||
|
||||
.code
|
||||
inffas8664fnc PROC
|
||||
|
||||
; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and
|
||||
; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
|
||||
;
|
||||
; All registers must be preserved across the call, except for
|
||||
; rax, rcx, rdx, r8, r-9, r10, and r11, which are scratch.
|
||||
|
||||
|
||||
mov [rsp-8],rsi
|
||||
mov [rsp-16],rdi
|
||||
mov [rsp-24],r12
|
||||
mov [rsp-32],r13
|
||||
mov [rsp-40],r14
|
||||
mov [rsp-48],r15
|
||||
mov [rsp-56],rbx
|
||||
|
||||
mov rax,rcx
|
||||
|
||||
mov [rax+8], rbp ; /* save regs rbp and rsp */
|
||||
mov [rax], rsp
|
||||
|
||||
mov rsp, rax ; /* make rsp point to &ar */
|
||||
|
||||
mov rsi, [rsp+16] ; /* rsi = in */
|
||||
mov rdi, [rsp+32] ; /* rdi = out */
|
||||
mov r9, [rsp+24] ; /* r9 = last */
|
||||
mov r10, [rsp+48] ; /* r10 = end */
|
||||
mov rbp, [rsp+64] ; /* rbp = lcode */
|
||||
mov r11, [rsp+72] ; /* r11 = dcode */
|
||||
mov rdx, [rsp+80] ; /* rdx = hold */
|
||||
mov ebx, [rsp+88] ; /* ebx = bits */
|
||||
mov r12d, [rsp+100] ; /* r12d = lmask */
|
||||
mov r13d, [rsp+104] ; /* r13d = dmask */
|
||||
; /* r14d = len */
|
||||
; /* r15d = dist */
|
||||
|
||||
|
||||
cld
|
||||
cmp r10, rdi
|
||||
je L_one_time ; /* if only one decode left */
|
||||
cmp r9, rsi
|
||||
|
||||
jne L_do_loop
|
||||
|
||||
|
||||
L_one_time:
|
||||
mov r8, r12 ; /* r8 = lmask */
|
||||
cmp bl, 32
|
||||
ja L_get_length_code_one_time
|
||||
|
||||
lodsd ; /* eax = *(uint *)in++ */
|
||||
mov cl, bl ; /* cl = bits, needs it for shifting */
|
||||
add bl, 32 ; /* bits += 32 */
|
||||
shl rax, cl
|
||||
or rdx, rax ; /* hold |= *((uint *)in)++ << bits */
|
||||
jmp L_get_length_code_one_time
|
||||
|
||||
ALIGN 4
|
||||
L_while_test:
|
||||
cmp r10, rdi
|
||||
jbe L_break_loop
|
||||
cmp r9, rsi
|
||||
jbe L_break_loop
|
||||
|
||||
L_do_loop:
|
||||
mov r8, r12 ; /* r8 = lmask */
|
||||
cmp bl, 32
|
||||
ja L_get_length_code ; /* if (32 < bits) */
|
||||
|
||||
lodsd ; /* eax = *(uint *)in++ */
|
||||
mov cl, bl ; /* cl = bits, needs it for shifting */
|
||||
add bl, 32 ; /* bits += 32 */
|
||||
shl rax, cl
|
||||
or rdx, rax ; /* hold |= *((uint *)in)++ << bits */
|
||||
|
||||
L_get_length_code:
|
||||
and r8, rdx ; /* r8 &= hold */
|
||||
mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */
|
||||
|
||||
mov cl, ah ; /* cl = this.bits */
|
||||
sub bl, ah ; /* bits -= this.bits */
|
||||
shr rdx, cl ; /* hold >>= this.bits */
|
||||
|
||||
test al, al
|
||||
jnz L_test_for_length_base ; /* if (op != 0) 45.7% */
|
||||
|
||||
mov r8, r12 ; /* r8 = lmask */
|
||||
shr eax, 16 ; /* output this.val char */
|
||||
stosb
|
||||
|
||||
L_get_length_code_one_time:
|
||||
and r8, rdx ; /* r8 &= hold */
|
||||
mov eax, [rbp+r8*4] ; /* eax = lcode[hold & lmask] */
|
||||
|
||||
L_dolen:
|
||||
mov cl, ah ; /* cl = this.bits */
|
||||
sub bl, ah ; /* bits -= this.bits */
|
||||
shr rdx, cl ; /* hold >>= this.bits */
|
||||
|
||||
test al, al
|
||||
jnz L_test_for_length_base ; /* if (op != 0) 45.7% */
|
||||
|
||||
shr eax, 16 ; /* output this.val char */
|
||||
stosb
|
||||
jmp L_while_test
|
||||
|
||||
ALIGN 4
|
||||
L_test_for_length_base:
|
||||
mov r14d, eax ; /* len = this */
|
||||
shr r14d, 16 ; /* len = this.val */
|
||||
mov cl, al
|
||||
|
||||
test al, 16
|
||||
jz L_test_for_second_level_length ; /* if ((op & 16) == 0) 8% */
|
||||
and cl, 15 ; /* op &= 15 */
|
||||
jz L_decode_distance ; /* if (!op) */
|
||||
|
||||
L_add_bits_to_len:
|
||||
sub bl, cl
|
||||
xor eax, eax
|
||||
inc eax
|
||||
shl eax, cl
|
||||
dec eax
|
||||
and eax, edx ; /* eax &= hold */
|
||||
shr rdx, cl
|
||||
add r14d, eax ; /* len += hold & mask[op] */
|
||||
|
||||
L_decode_distance:
|
||||
mov r8, r13 ; /* r8 = dmask */
|
||||
cmp bl, 32
|
||||
ja L_get_distance_code ; /* if (32 < bits) */
|
||||
|
||||
lodsd ; /* eax = *(uint *)in++ */
|
||||
mov cl, bl ; /* cl = bits, needs it for shifting */
|
||||
add bl, 32 ; /* bits += 32 */
|
||||
shl rax, cl
|
||||
or rdx, rax ; /* hold |= *((uint *)in)++ << bits */
|
||||
|
||||
L_get_distance_code:
|
||||
and r8, rdx ; /* r8 &= hold */
|
||||
mov eax, [r11+r8*4] ; /* eax = dcode[hold & dmask] */
|
||||
|
||||
L_dodist:
|
||||
mov r15d, eax ; /* dist = this */
|
||||
shr r15d, 16 ; /* dist = this.val */
|
||||
mov cl, ah
|
||||
sub bl, ah ; /* bits -= this.bits */
|
||||
shr rdx, cl ; /* hold >>= this.bits */
|
||||
mov cl, al ; /* cl = this.op */
|
||||
|
||||
test al, 16 ; /* if ((op & 16) == 0) */
|
||||
jz L_test_for_second_level_dist
|
||||
and cl, 15 ; /* op &= 15 */
|
||||
jz L_check_dist_one
|
||||
|
||||
L_add_bits_to_dist:
|
||||
sub bl, cl
|
||||
xor eax, eax
|
||||
inc eax
|
||||
shl eax, cl
|
||||
dec eax ; /* (1 << op) - 1 */
|
||||
and eax, edx ; /* eax &= hold */
|
||||
shr rdx, cl
|
||||
add r15d, eax ; /* dist += hold & ((1 << op) - 1) */
|
||||
|
||||
L_check_window:
|
||||
mov r8, rsi ; /* save in so from can use it's reg */
|
||||
mov rax, rdi
|
||||
sub rax, [rsp+40] ; /* nbytes = out - beg */
|
||||
|
||||
cmp eax, r15d
|
||||
jb L_clip_window ; /* if (dist > nbytes) 4.2% */
|
||||
|
||||
mov ecx, r14d ; /* ecx = len */
|
||||
mov rsi, rdi
|
||||
sub rsi, r15 ; /* from = out - dist */
|
||||
|
||||
sar ecx, 1
|
||||
jnc L_copy_two ; /* if len % 2 == 0 */
|
||||
|
||||
rep movsw
|
||||
mov al, [rsi]
|
||||
mov [rdi], al
|
||||
inc rdi
|
||||
|
||||
mov rsi, r8 ; /* move in back to %rsi, toss from */
|
||||
jmp L_while_test
|
||||
|
||||
L_copy_two:
|
||||
rep movsw
|
||||
mov rsi, r8 ; /* move in back to %rsi, toss from */
|
||||
jmp L_while_test
|
||||
|
||||
ALIGN 4
|
||||
L_check_dist_one:
|
||||
cmp r15d, 1 ; /* if dist 1, is a memset */
|
||||
jne L_check_window
|
||||
cmp [rsp+40], rdi ; /* if out == beg, outside window */
|
||||
je L_check_window
|
||||
|
||||
mov ecx, r14d ; /* ecx = len */
|
||||
mov al, [rdi-1]
|
||||
mov ah, al
|
||||
|
||||
sar ecx, 1
|
||||
jnc L_set_two
|
||||
mov [rdi], al
|
||||
inc rdi
|
||||
|
||||
L_set_two:
|
||||
rep stosw
|
||||
jmp L_while_test
|
||||
|
||||
ALIGN 4
|
||||
L_test_for_second_level_length:
|
||||
test al, 64
|
||||
jnz L_test_for_end_of_block ; /* if ((op & 64) != 0) */
|
||||
|
||||
xor eax, eax
|
||||
inc eax
|
||||
shl eax, cl
|
||||
dec eax
|
||||
and eax, edx ; /* eax &= hold */
|
||||
add eax, r14d ; /* eax += len */
|
||||
mov eax, [rbp+rax*4] ; /* eax = lcode[val+(hold&mask[op])]*/
|
||||
jmp L_dolen
|
||||
|
||||
ALIGN 4
|
||||
L_test_for_second_level_dist:
|
||||
test al, 64
|
||||
jnz L_invalid_distance_code ; /* if ((op & 64) != 0) */
|
||||
|
||||
xor eax, eax
|
||||
inc eax
|
||||
shl eax, cl
|
||||
dec eax
|
||||
and eax, edx ; /* eax &= hold */
|
||||
add eax, r15d ; /* eax += dist */
|
||||
mov eax, [r11+rax*4] ; /* eax = dcode[val+(hold&mask[op])]*/
|
||||
jmp L_dodist
|
||||
|
||||
ALIGN 4
|
||||
L_clip_window:
|
||||
mov ecx, eax ; /* ecx = nbytes */
|
||||
mov eax, [rsp+92] ; /* eax = wsize, prepare for dist cmp */
|
||||
neg ecx ; /* nbytes = -nbytes */
|
||||
|
||||
cmp eax, r15d
|
||||
jb L_invalid_distance_too_far ; /* if (dist > wsize) */
|
||||
|
||||
add ecx, r15d ; /* nbytes = dist - nbytes */
|
||||
cmp dword ptr [rsp+96], 0
|
||||
jne L_wrap_around_window ; /* if (write != 0) */
|
||||
|
||||
mov rsi, [rsp+56] ; /* from = window */
|
||||
sub eax, ecx ; /* eax -= nbytes */
|
||||
add rsi, rax ; /* from += wsize - nbytes */
|
||||
|
||||
mov eax, r14d ; /* eax = len */
|
||||
cmp r14d, ecx
|
||||
jbe L_do_copy ; /* if (nbytes >= len) */
|
||||
|
||||
sub eax, ecx ; /* eax -= nbytes */
|
||||
rep movsb
|
||||
mov rsi, rdi
|
||||
sub rsi, r15 ; /* from = &out[ -dist ] */
|
||||
jmp L_do_copy
|
||||
|
||||
ALIGN 4
|
||||
L_wrap_around_window:
|
||||
mov eax, [rsp+96] ; /* eax = write */
|
||||
cmp ecx, eax
|
||||
jbe L_contiguous_in_window ; /* if (write >= nbytes) */
|
||||
|
||||
mov esi, [rsp+92] ; /* from = wsize */
|
||||
add rsi, [rsp+56] ; /* from += window */
|
||||
add rsi, rax ; /* from += write */
|
||||
sub rsi, rcx ; /* from -= nbytes */
|
||||
sub ecx, eax ; /* nbytes -= write */
|
||||
|
||||
mov eax, r14d ; /* eax = len */
|
||||
cmp eax, ecx
|
||||
jbe L_do_copy ; /* if (nbytes >= len) */
|
||||
|
||||
sub eax, ecx ; /* len -= nbytes */
|
||||
rep movsb
|
||||
mov rsi, [rsp+56] ; /* from = window */
|
||||
mov ecx, [rsp+96] ; /* nbytes = write */
|
||||
cmp eax, ecx
|
||||
jbe L_do_copy ; /* if (nbytes >= len) */
|
||||
|
||||
sub eax, ecx ; /* len -= nbytes */
|
||||
rep movsb
|
||||
mov rsi, rdi
|
||||
sub rsi, r15 ; /* from = out - dist */
|
||||
jmp L_do_copy
|
||||
|
||||
ALIGN 4
|
||||
L_contiguous_in_window:
|
||||
mov rsi, [rsp+56] ; /* rsi = window */
|
||||
add rsi, rax
|
||||
sub rsi, rcx ; /* from += write - nbytes */
|
||||
|
||||
mov eax, r14d ; /* eax = len */
|
||||
cmp eax, ecx
|
||||
jbe L_do_copy ; /* if (nbytes >= len) */
|
||||
|
||||
sub eax, ecx ; /* len -= nbytes */
|
||||
rep movsb
|
||||
mov rsi, rdi
|
||||
sub rsi, r15 ; /* from = out - dist */
|
||||
jmp L_do_copy ; /* if (nbytes >= len) */
|
||||
|
||||
ALIGN 4
|
||||
L_do_copy:
|
||||
mov ecx, eax ; /* ecx = len */
|
||||
rep movsb
|
||||
|
||||
mov rsi, r8 ; /* move in back to %esi, toss from */
|
||||
jmp L_while_test
|
||||
|
||||
L_test_for_end_of_block:
|
||||
test al, 32
|
||||
jz L_invalid_literal_length_code
|
||||
mov dword ptr [rsp+116], 1
|
||||
jmp L_break_loop_with_status
|
||||
|
||||
L_invalid_literal_length_code:
|
||||
mov dword ptr [rsp+116], 2
|
||||
jmp L_break_loop_with_status
|
||||
|
||||
L_invalid_distance_code:
|
||||
mov dword ptr [rsp+116], 3
|
||||
jmp L_break_loop_with_status
|
||||
|
||||
L_invalid_distance_too_far:
|
||||
mov dword ptr [rsp+116], 4
|
||||
jmp L_break_loop_with_status
|
||||
|
||||
L_break_loop:
|
||||
mov dword ptr [rsp+116], 0
|
||||
|
||||
L_break_loop_with_status:
|
||||
; /* put in, out, bits, and hold back into ar and pop esp */
|
||||
mov [rsp+16], rsi ; /* in */
|
||||
mov [rsp+32], rdi ; /* out */
|
||||
mov [rsp+88], ebx ; /* bits */
|
||||
mov [rsp+80], rdx ; /* hold */
|
||||
|
||||
mov rax, [rsp] ; /* restore rbp and rsp */
|
||||
mov rbp, [rsp+8]
|
||||
mov rsp, rax
|
||||
|
||||
|
||||
|
||||
mov rsi,[rsp-8]
|
||||
mov rdi,[rsp-16]
|
||||
mov r12,[rsp-24]
|
||||
mov r13,[rsp-32]
|
||||
mov r14,[rsp-40]
|
||||
mov r15,[rsp-48]
|
||||
mov rbx,[rsp-56]
|
||||
|
||||
ret 0
|
||||
; :
|
||||
; : "m" (ar)
|
||||
; : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi",
|
||||
; "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15"
|
||||
; );
|
||||
|
||||
inffas8664fnc ENDP
|
||||
;_TEXT ENDS
|
||||
END
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
Summary
|
||||
-------
|
||||
This directory contains ASM implementations of the functions
|
||||
longest_match() and inflate_fast(), for 64 bits x86 (both AMD64 and Intel EM64t),
|
||||
for use with Microsoft Macro Assembler (x64) for AMD64 and Microsoft C++ 64 bits.
|
||||
|
||||
gvmat64.asm is written by Gilles Vollant (2005), by using Brian Raiter 686/32 bits
|
||||
assembly optimized version from Jean-loup Gailly original longest_match function
|
||||
|
||||
inffasx64.asm and inffas8664.c were written by Chris Anderson, by optimizing
|
||||
original function from Mark Adler
|
||||
|
||||
Use instructions
|
||||
----------------
|
||||
Assemble the .asm files using MASM and put the object files into the zlib source
|
||||
directory. You can also get object files here:
|
||||
|
||||
http://www.winimage.com/zLibDll/zlib124_masm_obj.zip
|
||||
|
||||
define ASMV and ASMINF in your project. Include inffas8664.c in your source tree,
|
||||
and inffasx64.obj and gvmat64.obj as object to link.
|
||||
|
||||
|
||||
Build instructions
|
||||
------------------
|
||||
run bld_64.bat with Microsoft Macro Assembler (x64) for AMD64 (ml64.exe)
|
||||
|
||||
ml64.exe is given with Visual Studio 2005, Windows 2003 server DDK
|
||||
|
||||
You can get Windows 2003 server DDK with ml64 and cl for AMD64 from
|
||||
http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
ml /coff /Zi /c /Flmatch686.lst match686.asm
|
||||
ml /coff /Zi /c /Flinffas32.lst inffas32.asm
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,479 @@
|
|||
; match686.asm -- Asm portion of the optimized longest_match for 32 bits x86
|
||||
; Copyright (C) 1995-1996 Jean-loup Gailly, Brian Raiter and Gilles Vollant.
|
||||
; File written by Gilles Vollant, by converting match686.S from Brian Raiter
|
||||
; for MASM. This is as assembly version of longest_match
|
||||
; from Jean-loup Gailly in deflate.c
|
||||
;
|
||||
; http://www.zlib.net
|
||||
; http://www.winimage.com/zLibDll
|
||||
; http://www.muppetlabs.com/~breadbox/software/assembly.html
|
||||
;
|
||||
; For Visual C++ 4.x and higher and ML 6.x and higher
|
||||
; ml.exe is distributed in
|
||||
; http://www.microsoft.com/downloads/details.aspx?FamilyID=7a1c9da0-0510-44a2-b042-7ef370530c64
|
||||
;
|
||||
; this file contain two implementation of longest_match
|
||||
;
|
||||
; this longest_match was written by Brian raiter (1998), optimized for Pentium Pro
|
||||
; (and the faster known version of match_init on modern Core 2 Duo and AMD Phenom)
|
||||
;
|
||||
; for using an assembly version of longest_match, you need define ASMV in project
|
||||
;
|
||||
; compile the asm file running
|
||||
; ml /coff /Zi /c /Flmatch686.lst match686.asm
|
||||
; and do not include match686.obj in your project
|
||||
;
|
||||
; note: contrib of zLib 1.2.3 and earlier contained both a deprecated version for
|
||||
; Pentium (prior Pentium Pro) and this version for Pentium Pro and modern processor
|
||||
; with autoselect (with cpu detection code)
|
||||
; if you want support the old pentium optimization, you can still use these version
|
||||
;
|
||||
; this file is not optimized for old pentium, but it compatible with all x86 32 bits
|
||||
; processor (starting 80386)
|
||||
;
|
||||
;
|
||||
; see below : zlib1222add must be adjuster if you use a zlib version < 1.2.2.2
|
||||
|
||||
;uInt longest_match(s, cur_match)
|
||||
; deflate_state *s;
|
||||
; IPos cur_match; /* current match */
|
||||
|
||||
NbStack equ 76
|
||||
cur_match equ dword ptr[esp+NbStack-0]
|
||||
str_s equ dword ptr[esp+NbStack-4]
|
||||
; 5 dword on top (ret,ebp,esi,edi,ebx)
|
||||
adrret equ dword ptr[esp+NbStack-8]
|
||||
pushebp equ dword ptr[esp+NbStack-12]
|
||||
pushedi equ dword ptr[esp+NbStack-16]
|
||||
pushesi equ dword ptr[esp+NbStack-20]
|
||||
pushebx equ dword ptr[esp+NbStack-24]
|
||||
|
||||
chain_length equ dword ptr [esp+NbStack-28]
|
||||
limit equ dword ptr [esp+NbStack-32]
|
||||
best_len equ dword ptr [esp+NbStack-36]
|
||||
window equ dword ptr [esp+NbStack-40]
|
||||
prev equ dword ptr [esp+NbStack-44]
|
||||
scan_start equ word ptr [esp+NbStack-48]
|
||||
wmask equ dword ptr [esp+NbStack-52]
|
||||
match_start_ptr equ dword ptr [esp+NbStack-56]
|
||||
nice_match equ dword ptr [esp+NbStack-60]
|
||||
scan equ dword ptr [esp+NbStack-64]
|
||||
|
||||
windowlen equ dword ptr [esp+NbStack-68]
|
||||
match_start equ dword ptr [esp+NbStack-72]
|
||||
strend equ dword ptr [esp+NbStack-76]
|
||||
NbStackAdd equ (NbStack-24)
|
||||
|
||||
.386p
|
||||
|
||||
name gvmatch
|
||||
.MODEL FLAT
|
||||
|
||||
|
||||
|
||||
; all the +zlib1222add offsets are due to the addition of fields
|
||||
; in zlib in the deflate_state structure since the asm code was first written
|
||||
; (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
|
||||
; (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
|
||||
; if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
|
||||
|
||||
zlib1222add equ 8
|
||||
|
||||
; Note : these value are good with a 8 bytes boundary pack structure
|
||||
dep_chain_length equ 74h+zlib1222add
|
||||
dep_window equ 30h+zlib1222add
|
||||
dep_strstart equ 64h+zlib1222add
|
||||
dep_prev_length equ 70h+zlib1222add
|
||||
dep_nice_match equ 88h+zlib1222add
|
||||
dep_w_size equ 24h+zlib1222add
|
||||
dep_prev equ 38h+zlib1222add
|
||||
dep_w_mask equ 2ch+zlib1222add
|
||||
dep_good_match equ 84h+zlib1222add
|
||||
dep_match_start equ 68h+zlib1222add
|
||||
dep_lookahead equ 6ch+zlib1222add
|
||||
|
||||
|
||||
_TEXT segment
|
||||
|
||||
IFDEF NOUNDERLINE
|
||||
public longest_match
|
||||
public match_init
|
||||
ELSE
|
||||
public _longest_match
|
||||
public _match_init
|
||||
ENDIF
|
||||
|
||||
MAX_MATCH equ 258
|
||||
MIN_MATCH equ 3
|
||||
MIN_LOOKAHEAD equ (MAX_MATCH+MIN_MATCH+1)
|
||||
|
||||
|
||||
|
||||
MAX_MATCH equ 258
|
||||
MIN_MATCH equ 3
|
||||
MIN_LOOKAHEAD equ (MAX_MATCH + MIN_MATCH + 1)
|
||||
MAX_MATCH_8_ equ ((MAX_MATCH + 7) AND 0FFF0h)
|
||||
|
||||
|
||||
;;; stack frame offsets
|
||||
|
||||
chainlenwmask equ esp + 0 ; high word: current chain len
|
||||
; low word: s->wmask
|
||||
window equ esp + 4 ; local copy of s->window
|
||||
windowbestlen equ esp + 8 ; s->window + bestlen
|
||||
scanstart equ esp + 16 ; first two bytes of string
|
||||
scanend equ esp + 12 ; last two bytes of string
|
||||
scanalign equ esp + 20 ; dword-misalignment of string
|
||||
nicematch equ esp + 24 ; a good enough match size
|
||||
bestlen equ esp + 28 ; size of best match so far
|
||||
scan equ esp + 32 ; ptr to string wanting match
|
||||
|
||||
LocalVarsSize equ 36
|
||||
; saved ebx byte esp + 36
|
||||
; saved edi byte esp + 40
|
||||
; saved esi byte esp + 44
|
||||
; saved ebp byte esp + 48
|
||||
; return address byte esp + 52
|
||||
deflatestate equ esp + 56 ; the function arguments
|
||||
curmatch equ esp + 60
|
||||
|
||||
;;; Offsets for fields in the deflate_state structure. These numbers
|
||||
;;; are calculated from the definition of deflate_state, with the
|
||||
;;; assumption that the compiler will dword-align the fields. (Thus,
|
||||
;;; changing the definition of deflate_state could easily cause this
|
||||
;;; program to crash horribly, without so much as a warning at
|
||||
;;; compile time. Sigh.)
|
||||
|
||||
dsWSize equ 36+zlib1222add
|
||||
dsWMask equ 44+zlib1222add
|
||||
dsWindow equ 48+zlib1222add
|
||||
dsPrev equ 56+zlib1222add
|
||||
dsMatchLen equ 88+zlib1222add
|
||||
dsPrevMatch equ 92+zlib1222add
|
||||
dsStrStart equ 100+zlib1222add
|
||||
dsMatchStart equ 104+zlib1222add
|
||||
dsLookahead equ 108+zlib1222add
|
||||
dsPrevLen equ 112+zlib1222add
|
||||
dsMaxChainLen equ 116+zlib1222add
|
||||
dsGoodMatch equ 132+zlib1222add
|
||||
dsNiceMatch equ 136+zlib1222add
|
||||
|
||||
|
||||
;;; match686.asm -- Pentium-Pro-optimized version of longest_match()
|
||||
;;; Written for zlib 1.1.2
|
||||
;;; Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
|
||||
;;; You can look at http://www.muppetlabs.com/~breadbox/software/assembly.html
|
||||
;;;
|
||||
;;
|
||||
;; This software is provided 'as-is', without any express or implied
|
||||
;; warranty. In no event will the authors be held liable for any damages
|
||||
;; arising from the use of this software.
|
||||
;;
|
||||
;; Permission is granted to anyone to use this software for any purpose,
|
||||
;; including commercial applications, and to alter it and redistribute it
|
||||
;; freely, subject to the following restrictions:
|
||||
;;
|
||||
;; 1. The origin of this software must not be misrepresented; you must not
|
||||
;; claim that you wrote the original software. If you use this software
|
||||
;; in a product, an acknowledgment in the product documentation would be
|
||||
;; appreciated but is not required.
|
||||
;; 2. Altered source versions must be plainly marked as such, and must not be
|
||||
;; misrepresented as being the original software
|
||||
;; 3. This notice may not be removed or altered from any source distribution.
|
||||
;;
|
||||
|
||||
;GLOBAL _longest_match, _match_init
|
||||
|
||||
|
||||
;SECTION .text
|
||||
|
||||
;;; uInt longest_match(deflate_state *deflatestate, IPos curmatch)
|
||||
|
||||
;_longest_match:
|
||||
IFDEF NOUNDERLINE
|
||||
longest_match proc near
|
||||
ELSE
|
||||
_longest_match proc near
|
||||
ENDIF
|
||||
.FPO (9, 4, 0, 0, 1, 0)
|
||||
|
||||
;;; Save registers that the compiler may be using, and adjust esp to
|
||||
;;; make room for our stack frame.
|
||||
|
||||
push ebp
|
||||
push edi
|
||||
push esi
|
||||
push ebx
|
||||
sub esp, LocalVarsSize
|
||||
|
||||
;;; Retrieve the function arguments. ecx will hold cur_match
|
||||
;;; throughout the entire function. edx will hold the pointer to the
|
||||
;;; deflate_state structure during the function's setup (before
|
||||
;;; entering the main loop.
|
||||
|
||||
mov edx, [deflatestate]
|
||||
mov ecx, [curmatch]
|
||||
|
||||
;;; uInt wmask = s->w_mask;
|
||||
;;; unsigned chain_length = s->max_chain_length;
|
||||
;;; if (s->prev_length >= s->good_match) {
|
||||
;;; chain_length >>= 2;
|
||||
;;; }
|
||||
|
||||
mov eax, [edx + dsPrevLen]
|
||||
mov ebx, [edx + dsGoodMatch]
|
||||
cmp eax, ebx
|
||||
mov eax, [edx + dsWMask]
|
||||
mov ebx, [edx + dsMaxChainLen]
|
||||
jl LastMatchGood
|
||||
shr ebx, 2
|
||||
LastMatchGood:
|
||||
|
||||
;;; chainlen is decremented once beforehand so that the function can
|
||||
;;; use the sign flag instead of the zero flag for the exit test.
|
||||
;;; It is then shifted into the high word, to make room for the wmask
|
||||
;;; value, which it will always accompany.
|
||||
|
||||
dec ebx
|
||||
shl ebx, 16
|
||||
or ebx, eax
|
||||
mov [chainlenwmask], ebx
|
||||
|
||||
;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
|
||||
|
||||
mov eax, [edx + dsNiceMatch]
|
||||
mov ebx, [edx + dsLookahead]
|
||||
cmp ebx, eax
|
||||
jl LookaheadLess
|
||||
mov ebx, eax
|
||||
LookaheadLess: mov [nicematch], ebx
|
||||
|
||||
;;; register Bytef *scan = s->window + s->strstart;
|
||||
|
||||
mov esi, [edx + dsWindow]
|
||||
mov [window], esi
|
||||
mov ebp, [edx + dsStrStart]
|
||||
lea edi, [esi + ebp]
|
||||
mov [scan], edi
|
||||
|
||||
;;; Determine how many bytes the scan ptr is off from being
|
||||
;;; dword-aligned.
|
||||
|
||||
mov eax, edi
|
||||
neg eax
|
||||
and eax, 3
|
||||
mov [scanalign], eax
|
||||
|
||||
;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
|
||||
;;; s->strstart - (IPos)MAX_DIST(s) : NIL;
|
||||
|
||||
mov eax, [edx + dsWSize]
|
||||
sub eax, MIN_LOOKAHEAD
|
||||
sub ebp, eax
|
||||
jg LimitPositive
|
||||
xor ebp, ebp
|
||||
LimitPositive:
|
||||
|
||||
;;; int best_len = s->prev_length;
|
||||
|
||||
mov eax, [edx + dsPrevLen]
|
||||
mov [bestlen], eax
|
||||
|
||||
;;; Store the sum of s->window + best_len in esi locally, and in esi.
|
||||
|
||||
add esi, eax
|
||||
mov [windowbestlen], esi
|
||||
|
||||
;;; register ush scan_start = *(ushf*)scan;
|
||||
;;; register ush scan_end = *(ushf*)(scan+best_len-1);
|
||||
;;; Posf *prev = s->prev;
|
||||
|
||||
movzx ebx, word ptr [edi]
|
||||
mov [scanstart], ebx
|
||||
movzx ebx, word ptr [edi + eax - 1]
|
||||
mov [scanend], ebx
|
||||
mov edi, [edx + dsPrev]
|
||||
|
||||
;;; Jump into the main loop.
|
||||
|
||||
mov edx, [chainlenwmask]
|
||||
jmp short LoopEntry
|
||||
|
||||
align 4
|
||||
|
||||
;;; do {
|
||||
;;; match = s->window + cur_match;
|
||||
;;; if (*(ushf*)(match+best_len-1) != scan_end ||
|
||||
;;; *(ushf*)match != scan_start) continue;
|
||||
;;; [...]
|
||||
;;; } while ((cur_match = prev[cur_match & wmask]) > limit
|
||||
;;; && --chain_length != 0);
|
||||
;;;
|
||||
;;; Here is the inner loop of the function. The function will spend the
|
||||
;;; majority of its time in this loop, and majority of that time will
|
||||
;;; be spent in the first ten instructions.
|
||||
;;;
|
||||
;;; Within this loop:
|
||||
;;; ebx = scanend
|
||||
;;; ecx = curmatch
|
||||
;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
|
||||
;;; esi = windowbestlen - i.e., (window + bestlen)
|
||||
;;; edi = prev
|
||||
;;; ebp = limit
|
||||
|
||||
LookupLoop:
|
||||
and ecx, edx
|
||||
movzx ecx, word ptr [edi + ecx*2]
|
||||
cmp ecx, ebp
|
||||
jbe LeaveNow
|
||||
sub edx, 00010000h
|
||||
js LeaveNow
|
||||
LoopEntry: movzx eax, word ptr [esi + ecx - 1]
|
||||
cmp eax, ebx
|
||||
jnz LookupLoop
|
||||
mov eax, [window]
|
||||
movzx eax, word ptr [eax + ecx]
|
||||
cmp eax, [scanstart]
|
||||
jnz LookupLoop
|
||||
|
||||
;;; Store the current value of chainlen.
|
||||
|
||||
mov [chainlenwmask], edx
|
||||
|
||||
;;; Point edi to the string under scrutiny, and esi to the string we
|
||||
;;; are hoping to match it up with. In actuality, esi and edi are
|
||||
;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is
|
||||
;;; initialized to -(MAX_MATCH_8 - scanalign).
|
||||
|
||||
mov esi, [window]
|
||||
mov edi, [scan]
|
||||
add esi, ecx
|
||||
mov eax, [scanalign]
|
||||
mov edx, 0fffffef8h; -(MAX_MATCH_8)
|
||||
lea edi, [edi + eax + 0108h] ;MAX_MATCH_8]
|
||||
lea esi, [esi + eax + 0108h] ;MAX_MATCH_8]
|
||||
|
||||
;;; Test the strings for equality, 8 bytes at a time. At the end,
|
||||
;;; adjust edx so that it is offset to the exact byte that mismatched.
|
||||
;;;
|
||||
;;; We already know at this point that the first three bytes of the
|
||||
;;; strings match each other, and they can be safely passed over before
|
||||
;;; starting the compare loop. So what this code does is skip over 0-3
|
||||
;;; bytes, as much as necessary in order to dword-align the edi
|
||||
;;; pointer. (esi will still be misaligned three times out of four.)
|
||||
;;;
|
||||
;;; It should be confessed that this loop usually does not represent
|
||||
;;; much of the total running time. Replacing it with a more
|
||||
;;; straightforward "rep cmpsb" would not drastically degrade
|
||||
;;; performance.
|
||||
|
||||
LoopCmps:
|
||||
mov eax, [esi + edx]
|
||||
xor eax, [edi + edx]
|
||||
jnz LeaveLoopCmps
|
||||
mov eax, [esi + edx + 4]
|
||||
xor eax, [edi + edx + 4]
|
||||
jnz LeaveLoopCmps4
|
||||
add edx, 8
|
||||
jnz LoopCmps
|
||||
jmp short LenMaximum
|
||||
LeaveLoopCmps4: add edx, 4
|
||||
LeaveLoopCmps: test eax, 0000FFFFh
|
||||
jnz LenLower
|
||||
add edx, 2
|
||||
shr eax, 16
|
||||
LenLower: sub al, 1
|
||||
adc edx, 0
|
||||
|
||||
;;; Calculate the length of the match. If it is longer than MAX_MATCH,
|
||||
;;; then automatically accept it as the best possible match and leave.
|
||||
|
||||
lea eax, [edi + edx]
|
||||
mov edi, [scan]
|
||||
sub eax, edi
|
||||
cmp eax, MAX_MATCH
|
||||
jge LenMaximum
|
||||
|
||||
;;; If the length of the match is not longer than the best match we
|
||||
;;; have so far, then forget it and return to the lookup loop.
|
||||
|
||||
mov edx, [deflatestate]
|
||||
mov ebx, [bestlen]
|
||||
cmp eax, ebx
|
||||
jg LongerMatch
|
||||
mov esi, [windowbestlen]
|
||||
mov edi, [edx + dsPrev]
|
||||
mov ebx, [scanend]
|
||||
mov edx, [chainlenwmask]
|
||||
jmp LookupLoop
|
||||
|
||||
;;; s->match_start = cur_match;
|
||||
;;; best_len = len;
|
||||
;;; if (len >= nice_match) break;
|
||||
;;; scan_end = *(ushf*)(scan+best_len-1);
|
||||
|
||||
LongerMatch: mov ebx, [nicematch]
|
||||
mov [bestlen], eax
|
||||
mov [edx + dsMatchStart], ecx
|
||||
cmp eax, ebx
|
||||
jge LeaveNow
|
||||
mov esi, [window]
|
||||
add esi, eax
|
||||
mov [windowbestlen], esi
|
||||
movzx ebx, word ptr [edi + eax - 1]
|
||||
mov edi, [edx + dsPrev]
|
||||
mov [scanend], ebx
|
||||
mov edx, [chainlenwmask]
|
||||
jmp LookupLoop
|
||||
|
||||
;;; Accept the current string, with the maximum possible length.
|
||||
|
||||
LenMaximum: mov edx, [deflatestate]
|
||||
mov dword ptr [bestlen], MAX_MATCH
|
||||
mov [edx + dsMatchStart], ecx
|
||||
|
||||
;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
|
||||
;;; return s->lookahead;
|
||||
|
||||
LeaveNow:
|
||||
mov edx, [deflatestate]
|
||||
mov ebx, [bestlen]
|
||||
mov eax, [edx + dsLookahead]
|
||||
cmp ebx, eax
|
||||
jg LookaheadRet
|
||||
mov eax, ebx
|
||||
LookaheadRet:
|
||||
|
||||
;;; Restore the stack and return from whence we came.
|
||||
|
||||
add esp, LocalVarsSize
|
||||
pop ebx
|
||||
pop esi
|
||||
pop edi
|
||||
pop ebp
|
||||
|
||||
ret
|
||||
; please don't remove this string !
|
||||
; Your can freely use match686 in any free or commercial app if you don't remove the string in the binary!
|
||||
db 0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998",0dh,0ah
|
||||
|
||||
|
||||
IFDEF NOUNDERLINE
|
||||
longest_match endp
|
||||
ELSE
|
||||
_longest_match endp
|
||||
ENDIF
|
||||
|
||||
IFDEF NOUNDERLINE
|
||||
match_init proc near
|
||||
ret
|
||||
match_init endp
|
||||
ELSE
|
||||
_match_init proc near
|
||||
ret
|
||||
_match_init endp
|
||||
ENDIF
|
||||
|
||||
|
||||
_TEXT ends
|
||||
end
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
|
||||
Summary
|
||||
-------
|
||||
This directory contains ASM implementations of the functions
|
||||
longest_match() and inflate_fast().
|
||||
|
||||
|
||||
Use instructions
|
||||
----------------
|
||||
Assemble using MASM, and copy the object files into the zlib source
|
||||
directory, then run the appropriate makefile, as suggested below. You can
|
||||
donwload MASM from here:
|
||||
|
||||
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=7a1c9da0-0510-44a2-b042-7ef370530c64
|
||||
|
||||
You can also get objects files here:
|
||||
|
||||
http://www.winimage.com/zLibDll/zlib124_masm_obj.zip
|
||||
|
||||
Build instructions
|
||||
------------------
|
||||
* With Microsoft C and MASM:
|
||||
nmake -f win32/Makefile.msc LOC="-DASMV -DASMINF" OBJA="match686.obj inffas32.obj"
|
||||
|
||||
* With Borland C and TASM:
|
||||
make -f win32/Makefile.bor LOCAL_ZLIB="-DASMV -DASMINF" OBJA="match686.obj inffas32.obj" OBJPA="+match686c.obj+match686.obj+inffas32.obj"
|
||||
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
CC=cc
|
||||
CFLAGS=-O -I../..
|
||||
|
||||
UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a
|
||||
ZIP_OBJS = minizip.o zip.o ioapi.o ../../libz.a
|
||||
|
||||
.c.o:
|
||||
$(CC) -c $(CFLAGS) $*.c
|
||||
|
||||
all: miniunz minizip
|
||||
|
||||
miniunz: $(UNZ_OBJS)
|
||||
$(CC) $(CFLAGS) -o $@ $(UNZ_OBJS)
|
||||
|
||||
minizip: $(ZIP_OBJS)
|
||||
$(CC) $(CFLAGS) -o $@ $(ZIP_OBJS)
|
||||
|
||||
test: miniunz minizip
|
||||
./minizip test readme.txt
|
||||
./miniunz -l test.zip
|
||||
mv readme.txt readme.old
|
||||
./miniunz test.zip
|
||||
|
||||
clean:
|
||||
/bin/rm -f *.o *~ minizip miniunz
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
lib_LTLIBRARIES = libminizip.la
|
||||
|
||||
if COND_DEMOS
|
||||
bin_PROGRAMS = miniunzip minizip
|
||||
endif
|
||||
|
||||
zlib_top_srcdir = $(top_srcdir)/../..
|
||||
zlib_top_builddir = $(top_builddir)/../..
|
||||
|
||||
AM_CPPFLAGS = -I$(zlib_top_srcdir)
|
||||
AM_LDFLAGS = -L$(zlib_top_builddir)
|
||||
|
||||
if WIN32
|
||||
iowin32_src = iowin32.c
|
||||
iowin32_h = iowin32.h
|
||||
endif
|
||||
|
||||
libminizip_la_SOURCES = \
|
||||
ioapi.c \
|
||||
mztools.c \
|
||||
unzip.c \
|
||||
zip.c \
|
||||
${iowin32_src}
|
||||
|
||||
libminizip_la_LDFLAGS = $(AM_LDFLAGS) -version-info 1:0:0 -lz
|
||||
|
||||
minizip_includedir = $(includedir)/minizip
|
||||
minizip_include_HEADERS = \
|
||||
crypt.h \
|
||||
ioapi.h \
|
||||
mztools.h \
|
||||
unzip.h \
|
||||
zip.h \
|
||||
${iowin32_h}
|
||||
|
||||
pkgconfigdir = $(libdir)/pkgconfig
|
||||
pkgconfig_DATA = minizip.pc
|
||||
|
||||
EXTRA_PROGRAMS = miniunzip minizip
|
||||
|
||||
miniunzip_SOURCES = miniunz.c
|
||||
miniunzip_LDADD = libminizip.la
|
||||
|
||||
minizip_SOURCES = minizip.c
|
||||
minizip_LDADD = libminizip.la -lz
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
|
||||
MiniZip 1.1 was derrived from MiniZip at version 1.01f
|
||||
|
||||
Change in 1.0 (Okt 2009)
|
||||
- **TODO - Add history**
|
||||
|
||||
|
|
@ -0,0 +1,74 @@
|
|||
MiniZip - Copyright (c) 1998-2010 - by Gilles Vollant - version 1.1 64 bits from Mathias Svensson
|
||||
|
||||
Introduction
|
||||
---------------------
|
||||
MiniZip 1.1 is built from MiniZip 1.0 by Gilles Vollant ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
When adding ZIP64 support into minizip it would result into risk of breaking compatibility with minizip 1.0.
|
||||
All possible work was done for compatibility.
|
||||
|
||||
|
||||
Background
|
||||
---------------------
|
||||
When adding ZIP64 support Mathias Svensson found that Even Rouault have added ZIP64
|
||||
support for unzip.c into minizip for a open source project called gdal ( http://www.gdal.org/ )
|
||||
|
||||
That was used as a starting point. And after that ZIP64 support was added to zip.c
|
||||
some refactoring and code cleanup was also done.
|
||||
|
||||
|
||||
Changed from MiniZip 1.0 to MiniZip 1.1
|
||||
---------------------------------------
|
||||
* Added ZIP64 support for unzip ( by Even Rouault )
|
||||
* Added ZIP64 support for zip ( by Mathias Svensson )
|
||||
* Reverted some changed that Even Rouault did.
|
||||
* Bunch of patches received from Gulles Vollant that he received for MiniZip from various users.
|
||||
* Added unzip patch for BZIP Compression method (patch create by Daniel Borca)
|
||||
* Added BZIP Compress method for zip
|
||||
* Did some refactoring and code cleanup
|
||||
|
||||
|
||||
Credits
|
||||
|
||||
Gilles Vollant - Original MiniZip author
|
||||
Even Rouault - ZIP64 unzip Support
|
||||
Daniel Borca - BZip Compression method support in unzip
|
||||
Mathias Svensson - ZIP64 zip support
|
||||
Mathias Svensson - BZip Compression method support in zip
|
||||
|
||||
Resources
|
||||
|
||||
ZipLayout http://result42.com/projects/ZipFileLayout
|
||||
Command line tool for Windows that shows the layout and information of the headers in a zip archive.
|
||||
Used when debugging and validating the creation of zip files using MiniZip64
|
||||
|
||||
|
||||
ZIP App Note http://www.pkware.com/documents/casestudies/APPNOTE.TXT
|
||||
Zip File specification
|
||||
|
||||
|
||||
Notes.
|
||||
* To be able to use BZip compression method in zip64.c or unzip64.c the BZIP2 lib is needed and HAVE_BZIP2 need to be defined.
|
||||
|
||||
License
|
||||
----------------------------------------------------------
|
||||
Condition of use and distribution are the same than zlib :
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
|
||||
----------------------------------------------------------
|
||||
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
# -*- Autoconf -*-
|
||||
# Process this file with autoconf to produce a configure script.
|
||||
|
||||
AC_INIT([minizip], [1.2.8], [bugzilla.redhat.com])
|
||||
AC_CONFIG_SRCDIR([minizip.c])
|
||||
AM_INIT_AUTOMAKE([foreign])
|
||||
LT_INIT
|
||||
|
||||
AC_MSG_CHECKING([whether to build example programs])
|
||||
AC_ARG_ENABLE([demos], AC_HELP_STRING([--enable-demos], [build example programs]))
|
||||
AM_CONDITIONAL([COND_DEMOS], [test "$enable_demos" = yes])
|
||||
if test "$enable_demos" = yes
|
||||
then
|
||||
AC_MSG_RESULT([yes])
|
||||
else
|
||||
AC_MSG_RESULT([no])
|
||||
fi
|
||||
|
||||
case "${host}" in
|
||||
*-mingw* | mingw*)
|
||||
WIN32="yes"
|
||||
;;
|
||||
*)
|
||||
;;
|
||||
esac
|
||||
AM_CONDITIONAL([WIN32], [test "${WIN32}" = "yes"])
|
||||
|
||||
|
||||
AC_SUBST([HAVE_UNISTD_H], [0])
|
||||
AC_CHECK_HEADER([unistd.h], [HAVE_UNISTD_H=1], [])
|
||||
AC_CONFIG_FILES([Makefile minizip.pc])
|
||||
AC_OUTPUT
|
||||
|
|
@ -0,0 +1,131 @@
|
|||
/* crypt.h -- base code for crypt/uncrypt ZIPfile
|
||||
|
||||
|
||||
Version 1.01e, February 12th, 2005
|
||||
|
||||
Copyright (C) 1998-2005 Gilles Vollant
|
||||
|
||||
This code is a modified version of crypting code in Infozip distribution
|
||||
|
||||
The encryption/decryption parts of this source code (as opposed to the
|
||||
non-echoing password parts) were originally written in Europe. The
|
||||
whole source package can be freely distributed, including from the USA.
|
||||
(Prior to January 2000, re-export from the US was a violation of US law.)
|
||||
|
||||
This encryption code is a direct transcription of the algorithm from
|
||||
Roger Schlafly, described by Phil Katz in the file appnote.txt. This
|
||||
file (appnote.txt) is distributed with the PKZIP program (even in the
|
||||
version without encryption capabilities).
|
||||
|
||||
If you don't need crypting in your application, just define symbols
|
||||
NOCRYPT and NOUNCRYPT.
|
||||
|
||||
This code support the "Traditional PKWARE Encryption".
|
||||
|
||||
The new AES encryption added on Zip format by Winzip (see the page
|
||||
http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong
|
||||
Encryption is not supported.
|
||||
*/
|
||||
|
||||
#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
|
||||
|
||||
/***********************************************************************
|
||||
* Return the next byte in the pseudo-random sequence
|
||||
*/
|
||||
static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab)
|
||||
{
|
||||
unsigned temp; /* POTENTIAL BUG: temp*(temp^1) may overflow in an
|
||||
* unpredictable manner on 16-bit systems; not a problem
|
||||
* with any known compiler so far, though */
|
||||
|
||||
temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2;
|
||||
return (int)(((temp * (temp ^ 1)) >> 8) & 0xff);
|
||||
}
|
||||
|
||||
/***********************************************************************
|
||||
* Update the encryption keys with the next byte of plain text
|
||||
*/
|
||||
static int update_keys(unsigned long* pkeys,const z_crc_t* pcrc_32_tab,int c)
|
||||
{
|
||||
(*(pkeys+0)) = CRC32((*(pkeys+0)), c);
|
||||
(*(pkeys+1)) += (*(pkeys+0)) & 0xff;
|
||||
(*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
|
||||
{
|
||||
register int keyshift = (int)((*(pkeys+1)) >> 24);
|
||||
(*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift);
|
||||
}
|
||||
return c;
|
||||
}
|
||||
|
||||
|
||||
/***********************************************************************
|
||||
* Initialize the encryption keys and the random header according to
|
||||
* the given password.
|
||||
*/
|
||||
static void init_keys(const char* passwd,unsigned long* pkeys,const z_crc_t* pcrc_32_tab)
|
||||
{
|
||||
*(pkeys+0) = 305419896L;
|
||||
*(pkeys+1) = 591751049L;
|
||||
*(pkeys+2) = 878082192L;
|
||||
while (*passwd != '\0') {
|
||||
update_keys(pkeys,pcrc_32_tab,(int)*passwd);
|
||||
passwd++;
|
||||
}
|
||||
}
|
||||
|
||||
#define zdecode(pkeys,pcrc_32_tab,c) \
|
||||
(update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))
|
||||
|
||||
#define zencode(pkeys,pcrc_32_tab,c,t) \
|
||||
(t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), t^(c))
|
||||
|
||||
#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED
|
||||
|
||||
#define RAND_HEAD_LEN 12
|
||||
/* "last resort" source for second part of crypt seed pattern */
|
||||
# ifndef ZCR_SEED2
|
||||
# define ZCR_SEED2 3141592654UL /* use PI as default pattern */
|
||||
# endif
|
||||
|
||||
static int crypthead(const char* passwd, /* password string */
|
||||
unsigned char* buf, /* where to write header */
|
||||
int bufSize,
|
||||
unsigned long* pkeys,
|
||||
const z_crc_t* pcrc_32_tab,
|
||||
unsigned long crcForCrypting)
|
||||
{
|
||||
int n; /* index in random header */
|
||||
int t; /* temporary */
|
||||
int c; /* random byte */
|
||||
unsigned char header[RAND_HEAD_LEN-2]; /* random header */
|
||||
static unsigned calls = 0; /* ensure different random header each time */
|
||||
|
||||
if (bufSize<RAND_HEAD_LEN)
|
||||
return 0;
|
||||
|
||||
/* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
|
||||
* output of rand() to get less predictability, since rand() is
|
||||
* often poorly implemented.
|
||||
*/
|
||||
if (++calls == 1)
|
||||
{
|
||||
srand((unsigned)(time(NULL) ^ ZCR_SEED2));
|
||||
}
|
||||
init_keys(passwd, pkeys, pcrc_32_tab);
|
||||
for (n = 0; n < RAND_HEAD_LEN-2; n++)
|
||||
{
|
||||
c = (rand() >> 7) & 0xff;
|
||||
header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t);
|
||||
}
|
||||
/* Encrypt random header (last two bytes is high word of crc) */
|
||||
init_keys(passwd, pkeys, pcrc_32_tab);
|
||||
for (n = 0; n < RAND_HEAD_LEN-2; n++)
|
||||
{
|
||||
buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t);
|
||||
}
|
||||
buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t);
|
||||
buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t);
|
||||
return n;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,247 @@
|
|||
/* ioapi.h -- IO base function header for compress/uncompress .zip
|
||||
part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Modifications for Zip64 support
|
||||
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
|
||||
|
||||
For more info read MiniZip_info.txt
|
||||
|
||||
*/
|
||||
|
||||
#if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
|
||||
#define _CRT_SECURE_NO_WARNINGS
|
||||
#endif
|
||||
|
||||
#if defined(__APPLE__) || defined(IOAPI_NO_64)
|
||||
// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
|
||||
#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
|
||||
#define FTELLO_FUNC(stream) ftello(stream)
|
||||
#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
|
||||
#else
|
||||
#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
|
||||
#define FTELLO_FUNC(stream) ftello64(stream)
|
||||
#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
|
||||
#endif
|
||||
|
||||
|
||||
#include "ioapi.h"
|
||||
|
||||
voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode)
|
||||
{
|
||||
if (pfilefunc->zfile_func64.zopen64_file != NULL)
|
||||
return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
|
||||
else
|
||||
{
|
||||
return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
|
||||
}
|
||||
}
|
||||
|
||||
long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin)
|
||||
{
|
||||
if (pfilefunc->zfile_func64.zseek64_file != NULL)
|
||||
return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
|
||||
else
|
||||
{
|
||||
uLong offsetTruncated = (uLong)offset;
|
||||
if (offsetTruncated != offset)
|
||||
return -1;
|
||||
else
|
||||
return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
|
||||
}
|
||||
}
|
||||
|
||||
ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream)
|
||||
{
|
||||
if (pfilefunc->zfile_func64.zseek64_file != NULL)
|
||||
return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
|
||||
else
|
||||
{
|
||||
uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
|
||||
if ((tell_uLong) == MAXU32)
|
||||
return (ZPOS64_T)-1;
|
||||
else
|
||||
return tell_uLong;
|
||||
}
|
||||
}
|
||||
|
||||
void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32)
|
||||
{
|
||||
p_filefunc64_32->zfile_func64.zopen64_file = NULL;
|
||||
p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
|
||||
p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
|
||||
p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
|
||||
p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
|
||||
p_filefunc64_32->zfile_func64.ztell64_file = NULL;
|
||||
p_filefunc64_32->zfile_func64.zseek64_file = NULL;
|
||||
p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
|
||||
p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
|
||||
p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
|
||||
p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
|
||||
p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode));
|
||||
static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
|
||||
static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size));
|
||||
static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream));
|
||||
static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
|
||||
static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream));
|
||||
static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream));
|
||||
|
||||
static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)
|
||||
{
|
||||
FILE* file = NULL;
|
||||
const char* mode_fopen = NULL;
|
||||
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
|
||||
mode_fopen = "rb";
|
||||
else
|
||||
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
|
||||
mode_fopen = "r+b";
|
||||
else
|
||||
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
|
||||
mode_fopen = "wb";
|
||||
|
||||
if ((filename!=NULL) && (mode_fopen != NULL))
|
||||
file = fopen(filename, mode_fopen);
|
||||
return file;
|
||||
}
|
||||
|
||||
static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode)
|
||||
{
|
||||
FILE* file = NULL;
|
||||
const char* mode_fopen = NULL;
|
||||
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
|
||||
mode_fopen = "rb";
|
||||
else
|
||||
if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
|
||||
mode_fopen = "r+b";
|
||||
else
|
||||
if (mode & ZLIB_FILEFUNC_MODE_CREATE)
|
||||
mode_fopen = "wb";
|
||||
|
||||
if ((filename!=NULL) && (mode_fopen != NULL))
|
||||
file = FOPEN_FUNC((const char*)filename, mode_fopen);
|
||||
return file;
|
||||
}
|
||||
|
||||
|
||||
static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)
|
||||
{
|
||||
uLong ret;
|
||||
ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)
|
||||
{
|
||||
uLong ret;
|
||||
ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)
|
||||
{
|
||||
long ret;
|
||||
ret = ftell((FILE *)stream);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream)
|
||||
{
|
||||
ZPOS64_T ret;
|
||||
ret = FTELLO_FUNC((FILE *)stream);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)
|
||||
{
|
||||
int fseek_origin=0;
|
||||
long ret;
|
||||
switch (origin)
|
||||
{
|
||||
case ZLIB_FILEFUNC_SEEK_CUR :
|
||||
fseek_origin = SEEK_CUR;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_END :
|
||||
fseek_origin = SEEK_END;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_SET :
|
||||
fseek_origin = SEEK_SET;
|
||||
break;
|
||||
default: return -1;
|
||||
}
|
||||
ret = 0;
|
||||
if (fseek((FILE *)stream, offset, fseek_origin) != 0)
|
||||
ret = -1;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)
|
||||
{
|
||||
int fseek_origin=0;
|
||||
long ret;
|
||||
switch (origin)
|
||||
{
|
||||
case ZLIB_FILEFUNC_SEEK_CUR :
|
||||
fseek_origin = SEEK_CUR;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_END :
|
||||
fseek_origin = SEEK_END;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_SET :
|
||||
fseek_origin = SEEK_SET;
|
||||
break;
|
||||
default: return -1;
|
||||
}
|
||||
ret = 0;
|
||||
|
||||
if(FSEEKO_FUNC((FILE *)stream, offset, fseek_origin) != 0)
|
||||
ret = -1;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)
|
||||
{
|
||||
int ret;
|
||||
ret = fclose((FILE *)stream);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)
|
||||
{
|
||||
int ret;
|
||||
ret = ferror((FILE *)stream);
|
||||
return ret;
|
||||
}
|
||||
|
||||
void fill_fopen_filefunc (pzlib_filefunc_def)
|
||||
zlib_filefunc_def* pzlib_filefunc_def;
|
||||
{
|
||||
pzlib_filefunc_def->zopen_file = fopen_file_func;
|
||||
pzlib_filefunc_def->zread_file = fread_file_func;
|
||||
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
|
||||
pzlib_filefunc_def->ztell_file = ftell_file_func;
|
||||
pzlib_filefunc_def->zseek_file = fseek_file_func;
|
||||
pzlib_filefunc_def->zclose_file = fclose_file_func;
|
||||
pzlib_filefunc_def->zerror_file = ferror_file_func;
|
||||
pzlib_filefunc_def->opaque = NULL;
|
||||
}
|
||||
|
||||
void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def)
|
||||
{
|
||||
pzlib_filefunc_def->zopen64_file = fopen64_file_func;
|
||||
pzlib_filefunc_def->zread_file = fread_file_func;
|
||||
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
|
||||
pzlib_filefunc_def->ztell64_file = ftell64_file_func;
|
||||
pzlib_filefunc_def->zseek64_file = fseek64_file_func;
|
||||
pzlib_filefunc_def->zclose_file = fclose_file_func;
|
||||
pzlib_filefunc_def->zerror_file = ferror_file_func;
|
||||
pzlib_filefunc_def->opaque = NULL;
|
||||
}
|
||||
|
|
@ -0,0 +1,208 @@
|
|||
/* ioapi.h -- IO base function header for compress/uncompress .zip
|
||||
part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Modifications for Zip64 support
|
||||
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
|
||||
|
||||
For more info read MiniZip_info.txt
|
||||
|
||||
Changes
|
||||
|
||||
Oct-2009 - Defined ZPOS64_T to fpos_t on windows and u_int64_t on linux. (might need to find a better why for this)
|
||||
Oct-2009 - Change to fseeko64, ftello64 and fopen64 so large files would work on linux.
|
||||
More if/def section may be needed to support other platforms
|
||||
Oct-2009 - Defined fxxxx64 calls to normal fopen/ftell/fseek so they would compile on windows.
|
||||
(but you should use iowin32.c for windows instead)
|
||||
|
||||
*/
|
||||
|
||||
#ifndef _ZLIBIOAPI64_H
|
||||
#define _ZLIBIOAPI64_H
|
||||
|
||||
#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
|
||||
|
||||
// Linux needs this to support file operation on files larger then 4+GB
|
||||
// But might need better if/def to select just the platforms that needs them.
|
||||
|
||||
#ifndef __USE_FILE_OFFSET64
|
||||
#define __USE_FILE_OFFSET64
|
||||
#endif
|
||||
#ifndef __USE_LARGEFILE64
|
||||
#define __USE_LARGEFILE64
|
||||
#endif
|
||||
#ifndef _LARGEFILE64_SOURCE
|
||||
#define _LARGEFILE64_SOURCE
|
||||
#endif
|
||||
#ifndef _FILE_OFFSET_BIT
|
||||
#define _FILE_OFFSET_BIT 64
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include "zlib.h"
|
||||
|
||||
#if defined(USE_FILE32API)
|
||||
#define fopen64 fopen
|
||||
#define ftello64 ftell
|
||||
#define fseeko64 fseek
|
||||
#else
|
||||
#ifdef __FreeBSD__
|
||||
#define fopen64 fopen
|
||||
#define ftello64 ftello
|
||||
#define fseeko64 fseeko
|
||||
#endif
|
||||
#ifdef _MSC_VER
|
||||
#define fopen64 fopen
|
||||
#if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
|
||||
#define ftello64 _ftelli64
|
||||
#define fseeko64 _fseeki64
|
||||
#else // old MSC
|
||||
#define ftello64 ftell
|
||||
#define fseeko64 fseek
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/*
|
||||
#ifndef ZPOS64_T
|
||||
#ifdef _WIN32
|
||||
#define ZPOS64_T fpos_t
|
||||
#else
|
||||
#include <stdint.h>
|
||||
#define ZPOS64_T uint64_t
|
||||
#endif
|
||||
#endif
|
||||
*/
|
||||
|
||||
#ifdef HAVE_MINIZIP64_CONF_H
|
||||
#include "mz64conf.h"
|
||||
#endif
|
||||
|
||||
/* a type choosen by DEFINE */
|
||||
#ifdef HAVE_64BIT_INT_CUSTOM
|
||||
typedef 64BIT_INT_CUSTOM_TYPE ZPOS64_T;
|
||||
#else
|
||||
#ifdef HAS_STDINT_H
|
||||
#include "stdint.h"
|
||||
typedef uint64_t ZPOS64_T;
|
||||
#else
|
||||
|
||||
/* Maximum unsigned 32-bit value used as placeholder for zip64 */
|
||||
#define MAXU32 0xffffffff
|
||||
|
||||
#if defined(_MSC_VER) || defined(__BORLANDC__)
|
||||
typedef unsigned __int64 ZPOS64_T;
|
||||
#else
|
||||
typedef unsigned long long int ZPOS64_T;
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
|
||||
#define ZLIB_FILEFUNC_SEEK_CUR (1)
|
||||
#define ZLIB_FILEFUNC_SEEK_END (2)
|
||||
#define ZLIB_FILEFUNC_SEEK_SET (0)
|
||||
|
||||
#define ZLIB_FILEFUNC_MODE_READ (1)
|
||||
#define ZLIB_FILEFUNC_MODE_WRITE (2)
|
||||
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
|
||||
|
||||
#define ZLIB_FILEFUNC_MODE_EXISTING (4)
|
||||
#define ZLIB_FILEFUNC_MODE_CREATE (8)
|
||||
|
||||
|
||||
#ifndef ZCALLBACK
|
||||
#if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
|
||||
#define ZCALLBACK CALLBACK
|
||||
#else
|
||||
#define ZCALLBACK
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
|
||||
typedef voidpf (ZCALLBACK *open_file_func) OF((voidpf opaque, const char* filename, int mode));
|
||||
typedef uLong (ZCALLBACK *read_file_func) OF((voidpf opaque, voidpf stream, void* buf, uLong size));
|
||||
typedef uLong (ZCALLBACK *write_file_func) OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
|
||||
typedef int (ZCALLBACK *close_file_func) OF((voidpf opaque, voidpf stream));
|
||||
typedef int (ZCALLBACK *testerror_file_func) OF((voidpf opaque, voidpf stream));
|
||||
|
||||
typedef long (ZCALLBACK *tell_file_func) OF((voidpf opaque, voidpf stream));
|
||||
typedef long (ZCALLBACK *seek_file_func) OF((voidpf opaque, voidpf stream, uLong offset, int origin));
|
||||
|
||||
|
||||
/* here is the "old" 32 bits structure structure */
|
||||
typedef struct zlib_filefunc_def_s
|
||||
{
|
||||
open_file_func zopen_file;
|
||||
read_file_func zread_file;
|
||||
write_file_func zwrite_file;
|
||||
tell_file_func ztell_file;
|
||||
seek_file_func zseek_file;
|
||||
close_file_func zclose_file;
|
||||
testerror_file_func zerror_file;
|
||||
voidpf opaque;
|
||||
} zlib_filefunc_def;
|
||||
|
||||
typedef ZPOS64_T (ZCALLBACK *tell64_file_func) OF((voidpf opaque, voidpf stream));
|
||||
typedef long (ZCALLBACK *seek64_file_func) OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
|
||||
typedef voidpf (ZCALLBACK *open64_file_func) OF((voidpf opaque, const void* filename, int mode));
|
||||
|
||||
typedef struct zlib_filefunc64_def_s
|
||||
{
|
||||
open64_file_func zopen64_file;
|
||||
read_file_func zread_file;
|
||||
write_file_func zwrite_file;
|
||||
tell64_file_func ztell64_file;
|
||||
seek64_file_func zseek64_file;
|
||||
close_file_func zclose_file;
|
||||
testerror_file_func zerror_file;
|
||||
voidpf opaque;
|
||||
} zlib_filefunc64_def;
|
||||
|
||||
void fill_fopen64_filefunc OF((zlib_filefunc64_def* pzlib_filefunc_def));
|
||||
void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
|
||||
|
||||
/* now internal definition, only for zip.c and unzip.h */
|
||||
typedef struct zlib_filefunc64_32_def_s
|
||||
{
|
||||
zlib_filefunc64_def zfile_func64;
|
||||
open_file_func zopen32_file;
|
||||
tell_file_func ztell32_file;
|
||||
seek_file_func zseek32_file;
|
||||
} zlib_filefunc64_32_def;
|
||||
|
||||
|
||||
#define ZREAD64(filefunc,filestream,buf,size) ((*((filefunc).zfile_func64.zread_file)) ((filefunc).zfile_func64.opaque,filestream,buf,size))
|
||||
#define ZWRITE64(filefunc,filestream,buf,size) ((*((filefunc).zfile_func64.zwrite_file)) ((filefunc).zfile_func64.opaque,filestream,buf,size))
|
||||
//#define ZTELL64(filefunc,filestream) ((*((filefunc).ztell64_file)) ((filefunc).opaque,filestream))
|
||||
//#define ZSEEK64(filefunc,filestream,pos,mode) ((*((filefunc).zseek64_file)) ((filefunc).opaque,filestream,pos,mode))
|
||||
#define ZCLOSE64(filefunc,filestream) ((*((filefunc).zfile_func64.zclose_file)) ((filefunc).zfile_func64.opaque,filestream))
|
||||
#define ZERROR64(filefunc,filestream) ((*((filefunc).zfile_func64.zerror_file)) ((filefunc).zfile_func64.opaque,filestream))
|
||||
|
||||
voidpf call_zopen64 OF((const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode));
|
||||
long call_zseek64 OF((const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin));
|
||||
ZPOS64_T call_ztell64 OF((const zlib_filefunc64_32_def* pfilefunc,voidpf filestream));
|
||||
|
||||
void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32);
|
||||
|
||||
#define ZOPEN64(filefunc,filename,mode) (call_zopen64((&(filefunc)),(filename),(mode)))
|
||||
#define ZTELL64(filefunc,filestream) (call_ztell64((&(filefunc)),(filestream)))
|
||||
#define ZSEEK64(filefunc,filestream,pos,mode) (call_zseek64((&(filefunc)),(filestream),(pos),(mode)))
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,461 @@
|
|||
/* iowin32.c -- IO base function header for compress/uncompress .zip
|
||||
Version 1.1, February 14h, 2010
|
||||
part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Modifications for Zip64 support
|
||||
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
|
||||
|
||||
For more info read MiniZip_info.txt
|
||||
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
#include "zlib.h"
|
||||
#include "ioapi.h"
|
||||
#include "iowin32.h"
|
||||
|
||||
#ifndef INVALID_HANDLE_VALUE
|
||||
#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
|
||||
#endif
|
||||
|
||||
#ifndef INVALID_SET_FILE_POINTER
|
||||
#define INVALID_SET_FILE_POINTER ((DWORD)-1)
|
||||
#endif
|
||||
|
||||
|
||||
#if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
|
||||
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
|
||||
#define IOWIN32_USING_WINRT_API 1
|
||||
#endif
|
||||
#endif
|
||||
|
||||
voidpf ZCALLBACK win32_open_file_func OF((voidpf opaque, const char* filename, int mode));
|
||||
uLong ZCALLBACK win32_read_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size));
|
||||
uLong ZCALLBACK win32_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
|
||||
ZPOS64_T ZCALLBACK win32_tell64_file_func OF((voidpf opaque, voidpf stream));
|
||||
long ZCALLBACK win32_seek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
|
||||
int ZCALLBACK win32_close_file_func OF((voidpf opaque, voidpf stream));
|
||||
int ZCALLBACK win32_error_file_func OF((voidpf opaque, voidpf stream));
|
||||
|
||||
typedef struct
|
||||
{
|
||||
HANDLE hf;
|
||||
int error;
|
||||
} WIN32FILE_IOWIN;
|
||||
|
||||
|
||||
static void win32_translate_open_mode(int mode,
|
||||
DWORD* lpdwDesiredAccess,
|
||||
DWORD* lpdwCreationDisposition,
|
||||
DWORD* lpdwShareMode,
|
||||
DWORD* lpdwFlagsAndAttributes)
|
||||
{
|
||||
*lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0;
|
||||
|
||||
if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
|
||||
{
|
||||
*lpdwDesiredAccess = GENERIC_READ;
|
||||
*lpdwCreationDisposition = OPEN_EXISTING;
|
||||
*lpdwShareMode = FILE_SHARE_READ;
|
||||
}
|
||||
else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
|
||||
{
|
||||
*lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
|
||||
*lpdwCreationDisposition = OPEN_EXISTING;
|
||||
}
|
||||
else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
|
||||
{
|
||||
*lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
|
||||
*lpdwCreationDisposition = CREATE_ALWAYS;
|
||||
}
|
||||
}
|
||||
|
||||
static voidpf win32_build_iowin(HANDLE hFile)
|
||||
{
|
||||
voidpf ret=NULL;
|
||||
|
||||
if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
|
||||
{
|
||||
WIN32FILE_IOWIN w32fiow;
|
||||
w32fiow.hf = hFile;
|
||||
w32fiow.error = 0;
|
||||
ret = malloc(sizeof(WIN32FILE_IOWIN));
|
||||
|
||||
if (ret==NULL)
|
||||
CloseHandle(hFile);
|
||||
else
|
||||
*((WIN32FILE_IOWIN*)ret) = w32fiow;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
voidpf ZCALLBACK win32_open64_file_func (voidpf opaque,const void* filename,int mode)
|
||||
{
|
||||
const char* mode_fopen = NULL;
|
||||
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
|
||||
HANDLE hFile = NULL;
|
||||
|
||||
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
|
||||
|
||||
#ifdef IOWIN32_USING_WINRT_API
|
||||
#ifdef UNICODE
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
|
||||
#else
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
{
|
||||
WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
|
||||
MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
|
||||
hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
|
||||
}
|
||||
#endif
|
||||
#else
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
|
||||
#endif
|
||||
|
||||
return win32_build_iowin(hFile);
|
||||
}
|
||||
|
||||
|
||||
voidpf ZCALLBACK win32_open64_file_funcA (voidpf opaque,const void* filename,int mode)
|
||||
{
|
||||
const char* mode_fopen = NULL;
|
||||
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
|
||||
HANDLE hFile = NULL;
|
||||
|
||||
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
|
||||
|
||||
#ifdef IOWIN32_USING_WINRT_API
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
{
|
||||
WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
|
||||
MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
|
||||
hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
|
||||
}
|
||||
#else
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
|
||||
#endif
|
||||
|
||||
return win32_build_iowin(hFile);
|
||||
}
|
||||
|
||||
|
||||
voidpf ZCALLBACK win32_open64_file_funcW (voidpf opaque,const void* filename,int mode)
|
||||
{
|
||||
const char* mode_fopen = NULL;
|
||||
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
|
||||
HANDLE hFile = NULL;
|
||||
|
||||
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
|
||||
|
||||
#ifdef IOWIN32_USING_WINRT_API
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFile2((LPCWSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition,NULL);
|
||||
#else
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
|
||||
#endif
|
||||
|
||||
return win32_build_iowin(hFile);
|
||||
}
|
||||
|
||||
|
||||
voidpf ZCALLBACK win32_open_file_func (voidpf opaque,const char* filename,int mode)
|
||||
{
|
||||
const char* mode_fopen = NULL;
|
||||
DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
|
||||
HANDLE hFile = NULL;
|
||||
|
||||
win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
|
||||
|
||||
#ifdef IOWIN32_USING_WINRT_API
|
||||
#ifdef UNICODE
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
|
||||
#else
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
{
|
||||
WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
|
||||
MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
|
||||
hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
|
||||
}
|
||||
#endif
|
||||
#else
|
||||
if ((filename!=NULL) && (dwDesiredAccess != 0))
|
||||
hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
|
||||
#endif
|
||||
|
||||
return win32_build_iowin(hFile);
|
||||
}
|
||||
|
||||
|
||||
uLong ZCALLBACK win32_read_file_func (voidpf opaque, voidpf stream, void* buf,uLong size)
|
||||
{
|
||||
uLong ret=0;
|
||||
HANDLE hFile = NULL;
|
||||
if (stream!=NULL)
|
||||
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
|
||||
|
||||
if (hFile != NULL)
|
||||
{
|
||||
if (!ReadFile(hFile, buf, size, &ret, NULL))
|
||||
{
|
||||
DWORD dwErr = GetLastError();
|
||||
if (dwErr == ERROR_HANDLE_EOF)
|
||||
dwErr = 0;
|
||||
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
uLong ZCALLBACK win32_write_file_func (voidpf opaque,voidpf stream,const void* buf,uLong size)
|
||||
{
|
||||
uLong ret=0;
|
||||
HANDLE hFile = NULL;
|
||||
if (stream!=NULL)
|
||||
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
|
||||
|
||||
if (hFile != NULL)
|
||||
{
|
||||
if (!WriteFile(hFile, buf, size, &ret, NULL))
|
||||
{
|
||||
DWORD dwErr = GetLastError();
|
||||
if (dwErr == ERROR_HANDLE_EOF)
|
||||
dwErr = 0;
|
||||
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static BOOL MySetFilePointerEx(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *newPos, DWORD dwMoveMethod)
|
||||
{
|
||||
#ifdef IOWIN32_USING_WINRT_API
|
||||
return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod);
|
||||
#else
|
||||
LONG lHigh = pos.HighPart;
|
||||
DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, FILE_CURRENT);
|
||||
BOOL fOk = TRUE;
|
||||
if (dwNewPos == 0xFFFFFFFF)
|
||||
if (GetLastError() != NO_ERROR)
|
||||
fOk = FALSE;
|
||||
if ((newPos != NULL) && (fOk))
|
||||
{
|
||||
newPos->LowPart = dwNewPos;
|
||||
newPos->HighPart = lHigh;
|
||||
}
|
||||
return fOk;
|
||||
#endif
|
||||
}
|
||||
|
||||
long ZCALLBACK win32_tell_file_func (voidpf opaque,voidpf stream)
|
||||
{
|
||||
long ret=-1;
|
||||
HANDLE hFile = NULL;
|
||||
if (stream!=NULL)
|
||||
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
|
||||
if (hFile != NULL)
|
||||
{
|
||||
LARGE_INTEGER pos;
|
||||
pos.QuadPart = 0;
|
||||
|
||||
if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT))
|
||||
{
|
||||
DWORD dwErr = GetLastError();
|
||||
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
|
||||
ret = -1;
|
||||
}
|
||||
else
|
||||
ret=(long)pos.LowPart;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
ZPOS64_T ZCALLBACK win32_tell64_file_func (voidpf opaque, voidpf stream)
|
||||
{
|
||||
ZPOS64_T ret= (ZPOS64_T)-1;
|
||||
HANDLE hFile = NULL;
|
||||
if (stream!=NULL)
|
||||
hFile = ((WIN32FILE_IOWIN*)stream)->hf;
|
||||
|
||||
if (hFile)
|
||||
{
|
||||
LARGE_INTEGER pos;
|
||||
pos.QuadPart = 0;
|
||||
|
||||
if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT))
|
||||
{
|
||||
DWORD dwErr = GetLastError();
|
||||
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
|
||||
ret = (ZPOS64_T)-1;
|
||||
}
|
||||
else
|
||||
ret=pos.QuadPart;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
long ZCALLBACK win32_seek_file_func (voidpf opaque,voidpf stream,uLong offset,int origin)
|
||||
{
|
||||
DWORD dwMoveMethod=0xFFFFFFFF;
|
||||
HANDLE hFile = NULL;
|
||||
|
||||
long ret=-1;
|
||||
if (stream!=NULL)
|
||||
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
|
||||
switch (origin)
|
||||
{
|
||||
case ZLIB_FILEFUNC_SEEK_CUR :
|
||||
dwMoveMethod = FILE_CURRENT;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_END :
|
||||
dwMoveMethod = FILE_END;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_SET :
|
||||
dwMoveMethod = FILE_BEGIN;
|
||||
break;
|
||||
default: return -1;
|
||||
}
|
||||
|
||||
if (hFile != NULL)
|
||||
{
|
||||
LARGE_INTEGER pos;
|
||||
pos.QuadPart = offset;
|
||||
if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
|
||||
{
|
||||
DWORD dwErr = GetLastError();
|
||||
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
|
||||
ret = -1;
|
||||
}
|
||||
else
|
||||
ret=0;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
long ZCALLBACK win32_seek64_file_func (voidpf opaque, voidpf stream,ZPOS64_T offset,int origin)
|
||||
{
|
||||
DWORD dwMoveMethod=0xFFFFFFFF;
|
||||
HANDLE hFile = NULL;
|
||||
long ret=-1;
|
||||
|
||||
if (stream!=NULL)
|
||||
hFile = ((WIN32FILE_IOWIN*)stream)->hf;
|
||||
|
||||
switch (origin)
|
||||
{
|
||||
case ZLIB_FILEFUNC_SEEK_CUR :
|
||||
dwMoveMethod = FILE_CURRENT;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_END :
|
||||
dwMoveMethod = FILE_END;
|
||||
break;
|
||||
case ZLIB_FILEFUNC_SEEK_SET :
|
||||
dwMoveMethod = FILE_BEGIN;
|
||||
break;
|
||||
default: return -1;
|
||||
}
|
||||
|
||||
if (hFile)
|
||||
{
|
||||
LARGE_INTEGER pos;
|
||||
pos.QuadPart = offset;
|
||||
if (!MySetFilePointerEx(hFile, pos, NULL, FILE_CURRENT))
|
||||
{
|
||||
DWORD dwErr = GetLastError();
|
||||
((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
|
||||
ret = -1;
|
||||
}
|
||||
else
|
||||
ret=0;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ZCALLBACK win32_close_file_func (voidpf opaque, voidpf stream)
|
||||
{
|
||||
int ret=-1;
|
||||
|
||||
if (stream!=NULL)
|
||||
{
|
||||
HANDLE hFile;
|
||||
hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
|
||||
if (hFile != NULL)
|
||||
{
|
||||
CloseHandle(hFile);
|
||||
ret=0;
|
||||
}
|
||||
free(stream);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ZCALLBACK win32_error_file_func (voidpf opaque,voidpf stream)
|
||||
{
|
||||
int ret=-1;
|
||||
if (stream!=NULL)
|
||||
{
|
||||
ret = ((WIN32FILE_IOWIN*)stream) -> error;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
void fill_win32_filefunc (zlib_filefunc_def* pzlib_filefunc_def)
|
||||
{
|
||||
pzlib_filefunc_def->zopen_file = win32_open_file_func;
|
||||
pzlib_filefunc_def->zread_file = win32_read_file_func;
|
||||
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
|
||||
pzlib_filefunc_def->ztell_file = win32_tell_file_func;
|
||||
pzlib_filefunc_def->zseek_file = win32_seek_file_func;
|
||||
pzlib_filefunc_def->zclose_file = win32_close_file_func;
|
||||
pzlib_filefunc_def->zerror_file = win32_error_file_func;
|
||||
pzlib_filefunc_def->opaque = NULL;
|
||||
}
|
||||
|
||||
void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def)
|
||||
{
|
||||
pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
|
||||
pzlib_filefunc_def->zread_file = win32_read_file_func;
|
||||
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
|
||||
pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
|
||||
pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
|
||||
pzlib_filefunc_def->zclose_file = win32_close_file_func;
|
||||
pzlib_filefunc_def->zerror_file = win32_error_file_func;
|
||||
pzlib_filefunc_def->opaque = NULL;
|
||||
}
|
||||
|
||||
|
||||
void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def)
|
||||
{
|
||||
pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
|
||||
pzlib_filefunc_def->zread_file = win32_read_file_func;
|
||||
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
|
||||
pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
|
||||
pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
|
||||
pzlib_filefunc_def->zclose_file = win32_close_file_func;
|
||||
pzlib_filefunc_def->zerror_file = win32_error_file_func;
|
||||
pzlib_filefunc_def->opaque = NULL;
|
||||
}
|
||||
|
||||
|
||||
void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def)
|
||||
{
|
||||
pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
|
||||
pzlib_filefunc_def->zread_file = win32_read_file_func;
|
||||
pzlib_filefunc_def->zwrite_file = win32_write_file_func;
|
||||
pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
|
||||
pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
|
||||
pzlib_filefunc_def->zclose_file = win32_close_file_func;
|
||||
pzlib_filefunc_def->zerror_file = win32_error_file_func;
|
||||
pzlib_filefunc_def->opaque = NULL;
|
||||
}
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
/* iowin32.h -- IO base function header for compress/uncompress .zip
|
||||
Version 1.1, February 14h, 2010
|
||||
part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Modifications for Zip64 support
|
||||
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
|
||||
|
||||
For more info read MiniZip_info.txt
|
||||
|
||||
*/
|
||||
|
||||
#include <windows.h>
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
void fill_win32_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
|
||||
void fill_win32_filefunc64 OF((zlib_filefunc64_def* pzlib_filefunc_def));
|
||||
void fill_win32_filefunc64A OF((zlib_filefunc64_def* pzlib_filefunc_def));
|
||||
void fill_win32_filefunc64W OF((zlib_filefunc64_def* pzlib_filefunc_def));
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
|
@ -0,0 +1,25 @@
|
|||
$ if f$search("ioapi.h_orig") .eqs. "" then copy ioapi.h ioapi.h_orig
|
||||
$ open/write zdef vmsdefs.h
|
||||
$ copy sys$input: zdef
|
||||
$ deck
|
||||
#define unix
|
||||
#define fill_zlib_filefunc64_32_def_from_filefunc32 fillzffunc64from
|
||||
#define Write_Zip64EndOfCentralDirectoryLocator Write_Zip64EoDLocator
|
||||
#define Write_Zip64EndOfCentralDirectoryRecord Write_Zip64EoDRecord
|
||||
#define Write_EndOfCentralDirectoryRecord Write_EoDRecord
|
||||
$ eod
|
||||
$ close zdef
|
||||
$ copy vmsdefs.h,ioapi.h_orig ioapi.h
|
||||
$ cc/include=[--]/prefix=all ioapi.c
|
||||
$ cc/include=[--]/prefix=all miniunz.c
|
||||
$ cc/include=[--]/prefix=all unzip.c
|
||||
$ cc/include=[--]/prefix=all minizip.c
|
||||
$ cc/include=[--]/prefix=all zip.c
|
||||
$ link miniunz,unzip,ioapi,[--]libz.olb/lib
|
||||
$ link minizip,zip,ioapi,[--]libz.olb/lib
|
||||
$ mcr []minizip test minizip_info.txt
|
||||
$ mcr []miniunz -l test.zip
|
||||
$ rename minizip_info.txt; minizip_info.txt_old
|
||||
$ mcr []miniunz test.zip
|
||||
$ delete test.zip;*
|
||||
$exit
|
||||
|
|
@ -0,0 +1,660 @@
|
|||
/*
|
||||
miniunz.c
|
||||
Version 1.1, February 14h, 2010
|
||||
sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
|
||||
|
||||
Modifications of Unzip for Zip64
|
||||
Copyright (C) 2007-2008 Even Rouault
|
||||
|
||||
Modifications for Zip64 support on both zip and unzip
|
||||
Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
|
||||
*/
|
||||
|
||||
#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
|
||||
#ifndef __USE_FILE_OFFSET64
|
||||
#define __USE_FILE_OFFSET64
|
||||
#endif
|
||||
#ifndef __USE_LARGEFILE64
|
||||
#define __USE_LARGEFILE64
|
||||
#endif
|
||||
#ifndef _LARGEFILE64_SOURCE
|
||||
#define _LARGEFILE64_SOURCE
|
||||
#endif
|
||||
#ifndef _FILE_OFFSET_BIT
|
||||
#define _FILE_OFFSET_BIT 64
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifdef __APPLE__
|
||||
// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
|
||||
#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
|
||||
#define FTELLO_FUNC(stream) ftello(stream)
|
||||
#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
|
||||
#else
|
||||
#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
|
||||
#define FTELLO_FUNC(stream) ftello64(stream)
|
||||
#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
|
||||
#endif
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
#ifdef _WIN32
|
||||
# include <direct.h>
|
||||
# include <io.h>
|
||||
#else
|
||||
# include <unistd.h>
|
||||
# include <utime.h>
|
||||
#endif
|
||||
|
||||
|
||||
#include "unzip.h"
|
||||
|
||||
#define CASESENSITIVITY (0)
|
||||
#define WRITEBUFFERSIZE (8192)
|
||||
#define MAXFILENAME (256)
|
||||
|
||||
#ifdef _WIN32
|
||||
#define USEWIN32IOAPI
|
||||
#include "iowin32.h"
|
||||
#endif
|
||||
/*
|
||||
mini unzip, demo of unzip package
|
||||
|
||||
usage :
|
||||
Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]
|
||||
|
||||
list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
|
||||
if it exists
|
||||
*/
|
||||
|
||||
|
||||
/* change_file_date : change the date/time of a file
|
||||
filename : the filename of the file where date/time must be modified
|
||||
dosdate : the new date at the MSDos format (4 bytes)
|
||||
tmu_date : the SAME new date at the tm_unz format */
|
||||
void change_file_date(filename,dosdate,tmu_date)
|
||||
const char *filename;
|
||||
uLong dosdate;
|
||||
tm_unz tmu_date;
|
||||
{
|
||||
#ifdef _WIN32
|
||||
HANDLE hFile;
|
||||
FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
|
||||
|
||||
hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE,
|
||||
0,NULL,OPEN_EXISTING,0,NULL);
|
||||
GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
|
||||
DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
|
||||
LocalFileTimeToFileTime(&ftLocal,&ftm);
|
||||
SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
|
||||
CloseHandle(hFile);
|
||||
#else
|
||||
#ifdef unix || __APPLE__
|
||||
struct utimbuf ut;
|
||||
struct tm newdate;
|
||||
newdate.tm_sec = tmu_date.tm_sec;
|
||||
newdate.tm_min=tmu_date.tm_min;
|
||||
newdate.tm_hour=tmu_date.tm_hour;
|
||||
newdate.tm_mday=tmu_date.tm_mday;
|
||||
newdate.tm_mon=tmu_date.tm_mon;
|
||||
if (tmu_date.tm_year > 1900)
|
||||
newdate.tm_year=tmu_date.tm_year - 1900;
|
||||
else
|
||||
newdate.tm_year=tmu_date.tm_year ;
|
||||
newdate.tm_isdst=-1;
|
||||
|
||||
ut.actime=ut.modtime=mktime(&newdate);
|
||||
utime(filename,&ut);
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/* mymkdir and change_file_date are not 100 % portable
|
||||
As I don't know well Unix, I wait feedback for the unix portion */
|
||||
|
||||
int mymkdir(dirname)
|
||||
const char* dirname;
|
||||
{
|
||||
int ret=0;
|
||||
#ifdef _WIN32
|
||||
ret = _mkdir(dirname);
|
||||
#elif unix
|
||||
ret = mkdir (dirname,0775);
|
||||
#elif __APPLE__
|
||||
ret = mkdir (dirname,0775);
|
||||
#endif
|
||||
return ret;
|
||||
}
|
||||
|
||||
int makedir (newdir)
|
||||
char *newdir;
|
||||
{
|
||||
char *buffer ;
|
||||
char *p;
|
||||
int len = (int)strlen(newdir);
|
||||
|
||||
if (len <= 0)
|
||||
return 0;
|
||||
|
||||
buffer = (char*)malloc(len+1);
|
||||
if (buffer==NULL)
|
||||
{
|
||||
printf("Error allocating memory\n");
|
||||
return UNZ_INTERNALERROR;
|
||||
}
|
||||
strcpy(buffer,newdir);
|
||||
|
||||
if (buffer[len-1] == '/') {
|
||||
buffer[len-1] = '\0';
|
||||
}
|
||||
if (mymkdir(buffer) == 0)
|
||||
{
|
||||
free(buffer);
|
||||
return 1;
|
||||
}
|
||||
|
||||
p = buffer+1;
|
||||
while (1)
|
||||
{
|
||||
char hold;
|
||||
|
||||
while(*p && *p != '\\' && *p != '/')
|
||||
p++;
|
||||
hold = *p;
|
||||
*p = 0;
|
||||
if ((mymkdir(buffer) == -1) && (errno == ENOENT))
|
||||
{
|
||||
printf("couldn't create directory %s\n",buffer);
|
||||
free(buffer);
|
||||
return 0;
|
||||
}
|
||||
if (hold == 0)
|
||||
break;
|
||||
*p++ = hold;
|
||||
}
|
||||
free(buffer);
|
||||
return 1;
|
||||
}
|
||||
|
||||
void do_banner()
|
||||
{
|
||||
printf("MiniUnz 1.01b, demo of zLib + Unz package written by Gilles Vollant\n");
|
||||
printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
|
||||
}
|
||||
|
||||
void do_help()
|
||||
{
|
||||
printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
|
||||
" -e Extract without pathname (junk paths)\n" \
|
||||
" -x Extract with pathname\n" \
|
||||
" -v list files\n" \
|
||||
" -l list files\n" \
|
||||
" -d directory to extract into\n" \
|
||||
" -o overwrite files without prompting\n" \
|
||||
" -p extract crypted file using password\n\n");
|
||||
}
|
||||
|
||||
void Display64BitsSize(ZPOS64_T n, int size_char)
|
||||
{
|
||||
/* to avoid compatibility problem , we do here the conversion */
|
||||
char number[21];
|
||||
int offset=19;
|
||||
int pos_string = 19;
|
||||
number[20]=0;
|
||||
for (;;) {
|
||||
number[offset]=(char)((n%10)+'0');
|
||||
if (number[offset] != '0')
|
||||
pos_string=offset;
|
||||
n/=10;
|
||||
if (offset==0)
|
||||
break;
|
||||
offset--;
|
||||
}
|
||||
{
|
||||
int size_display_string = 19-pos_string;
|
||||
while (size_char > size_display_string)
|
||||
{
|
||||
size_char--;
|
||||
printf(" ");
|
||||
}
|
||||
}
|
||||
|
||||
printf("%s",&number[pos_string]);
|
||||
}
|
||||
|
||||
int do_list(uf)
|
||||
unzFile uf;
|
||||
{
|
||||
uLong i;
|
||||
unz_global_info64 gi;
|
||||
int err;
|
||||
|
||||
err = unzGetGlobalInfo64(uf,&gi);
|
||||
if (err!=UNZ_OK)
|
||||
printf("error %d with zipfile in unzGetGlobalInfo \n",err);
|
||||
printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
|
||||
printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
|
||||
for (i=0;i<gi.number_entry;i++)
|
||||
{
|
||||
char filename_inzip[256];
|
||||
unz_file_info64 file_info;
|
||||
uLong ratio=0;
|
||||
const char *string_method;
|
||||
char charCrypt=' ';
|
||||
err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
|
||||
if (err!=UNZ_OK)
|
||||
{
|
||||
printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
|
||||
break;
|
||||
}
|
||||
if (file_info.uncompressed_size>0)
|
||||
ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);
|
||||
|
||||
/* display a '*' if the file is crypted */
|
||||
if ((file_info.flag & 1) != 0)
|
||||
charCrypt='*';
|
||||
|
||||
if (file_info.compression_method==0)
|
||||
string_method="Stored";
|
||||
else
|
||||
if (file_info.compression_method==Z_DEFLATED)
|
||||
{
|
||||
uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
|
||||
if (iLevel==0)
|
||||
string_method="Defl:N";
|
||||
else if (iLevel==1)
|
||||
string_method="Defl:X";
|
||||
else if ((iLevel==2) || (iLevel==3))
|
||||
string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
|
||||
}
|
||||
else
|
||||
if (file_info.compression_method==Z_BZIP2ED)
|
||||
{
|
||||
string_method="BZip2 ";
|
||||
}
|
||||
else
|
||||
string_method="Unkn. ";
|
||||
|
||||
Display64BitsSize(file_info.uncompressed_size,7);
|
||||
printf(" %6s%c",string_method,charCrypt);
|
||||
Display64BitsSize(file_info.compressed_size,7);
|
||||
printf(" %3lu%% %2.2lu-%2.2lu-%2.2lu %2.2lu:%2.2lu %8.8lx %s\n",
|
||||
ratio,
|
||||
(uLong)file_info.tmu_date.tm_mon + 1,
|
||||
(uLong)file_info.tmu_date.tm_mday,
|
||||
(uLong)file_info.tmu_date.tm_year % 100,
|
||||
(uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
|
||||
(uLong)file_info.crc,filename_inzip);
|
||||
if ((i+1)<gi.number_entry)
|
||||
{
|
||||
err = unzGoToNextFile(uf);
|
||||
if (err!=UNZ_OK)
|
||||
{
|
||||
printf("error %d with zipfile in unzGoToNextFile\n",err);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int do_extract_currentfile(uf,popt_extract_without_path,popt_overwrite,password)
|
||||
unzFile uf;
|
||||
const int* popt_extract_without_path;
|
||||
int* popt_overwrite;
|
||||
const char* password;
|
||||
{
|
||||
char filename_inzip[256];
|
||||
char* filename_withoutpath;
|
||||
char* p;
|
||||
int err=UNZ_OK;
|
||||
FILE *fout=NULL;
|
||||
void* buf;
|
||||
uInt size_buf;
|
||||
|
||||
unz_file_info64 file_info;
|
||||
uLong ratio=0;
|
||||
err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
|
||||
|
||||
if (err!=UNZ_OK)
|
||||
{
|
||||
printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
|
||||
return err;
|
||||
}
|
||||
|
||||
size_buf = WRITEBUFFERSIZE;
|
||||
buf = (void*)malloc(size_buf);
|
||||
if (buf==NULL)
|
||||
{
|
||||
printf("Error allocating memory\n");
|
||||
return UNZ_INTERNALERROR;
|
||||
}
|
||||
|
||||
p = filename_withoutpath = filename_inzip;
|
||||
while ((*p) != '\0')
|
||||
{
|
||||
if (((*p)=='/') || ((*p)=='\\'))
|
||||
filename_withoutpath = p+1;
|
||||
p++;
|
||||
}
|
||||
|
||||
if ((*filename_withoutpath)=='\0')
|
||||
{
|
||||
if ((*popt_extract_without_path)==0)
|
||||
{
|
||||
printf("creating directory: %s\n",filename_inzip);
|
||||
mymkdir(filename_inzip);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
const char* write_filename;
|
||||
int skip=0;
|
||||
|
||||
if ((*popt_extract_without_path)==0)
|
||||
write_filename = filename_inzip;
|
||||
else
|
||||
write_filename = filename_withoutpath;
|
||||
|
||||
err = unzOpenCurrentFilePassword(uf,password);
|
||||
if (err!=UNZ_OK)
|
||||
{
|
||||
printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
|
||||
}
|
||||
|
||||
if (((*popt_overwrite)==0) && (err==UNZ_OK))
|
||||
{
|
||||
char rep=0;
|
||||
FILE* ftestexist;
|
||||
ftestexist = FOPEN_FUNC(write_filename,"rb");
|
||||
if (ftestexist!=NULL)
|
||||
{
|
||||
fclose(ftestexist);
|
||||
do
|
||||
{
|
||||
char answer[128];
|
||||
int ret;
|
||||
|
||||
printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
|
||||
ret = scanf("%1s",answer);
|
||||
if (ret != 1)
|
||||
{
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
rep = answer[0] ;
|
||||
if ((rep>='a') && (rep<='z'))
|
||||
rep -= 0x20;
|
||||
}
|
||||
while ((rep!='Y') && (rep!='N') && (rep!='A'));
|
||||
}
|
||||
|
||||
if (rep == 'N')
|
||||
skip = 1;
|
||||
|
||||
if (rep == 'A')
|
||||
*popt_overwrite=1;
|
||||
}
|
||||
|
||||
if ((skip==0) && (err==UNZ_OK))
|
||||
{
|
||||
fout=FOPEN_FUNC(write_filename,"wb");
|
||||
/* some zipfile don't contain directory alone before file */
|
||||
if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
|
||||
(filename_withoutpath!=(char*)filename_inzip))
|
||||
{
|
||||
char c=*(filename_withoutpath-1);
|
||||
*(filename_withoutpath-1)='\0';
|
||||
makedir(write_filename);
|
||||
*(filename_withoutpath-1)=c;
|
||||
fout=FOPEN_FUNC(write_filename,"wb");
|
||||
}
|
||||
|
||||
if (fout==NULL)
|
||||
{
|
||||
printf("error opening %s\n",write_filename);
|
||||
}
|
||||
}
|
||||
|
||||
if (fout!=NULL)
|
||||
{
|
||||
printf(" extracting: %s\n",write_filename);
|
||||
|
||||
do
|
||||
{
|
||||
err = unzReadCurrentFile(uf,buf,size_buf);
|
||||
if (err<0)
|
||||
{
|
||||
printf("error %d with zipfile in unzReadCurrentFile\n",err);
|
||||
break;
|
||||
}
|
||||
if (err>0)
|
||||
if (fwrite(buf,err,1,fout)!=1)
|
||||
{
|
||||
printf("error in writing extracted file\n");
|
||||
err=UNZ_ERRNO;
|
||||
break;
|
||||
}
|
||||
}
|
||||
while (err>0);
|
||||
if (fout)
|
||||
fclose(fout);
|
||||
|
||||
if (err==0)
|
||||
change_file_date(write_filename,file_info.dosDate,
|
||||
file_info.tmu_date);
|
||||
}
|
||||
|
||||
if (err==UNZ_OK)
|
||||
{
|
||||
err = unzCloseCurrentFile (uf);
|
||||
if (err!=UNZ_OK)
|
||||
{
|
||||
printf("error %d with zipfile in unzCloseCurrentFile\n",err);
|
||||
}
|
||||
}
|
||||
else
|
||||
unzCloseCurrentFile(uf); /* don't lose the error */
|
||||
}
|
||||
|
||||
free(buf);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
int do_extract(uf,opt_extract_without_path,opt_overwrite,password)
|
||||
unzFile uf;
|
||||
int opt_extract_without_path;
|
||||
int opt_overwrite;
|
||||
const char* password;
|
||||
{
|
||||
uLong i;
|
||||
unz_global_info64 gi;
|
||||
int err;
|
||||
FILE* fout=NULL;
|
||||
|
||||
err = unzGetGlobalInfo64(uf,&gi);
|
||||
if (err!=UNZ_OK)
|
||||
printf("error %d with zipfile in unzGetGlobalInfo \n",err);
|
||||
|
||||
for (i=0;i<gi.number_entry;i++)
|
||||
{
|
||||
if (do_extract_currentfile(uf,&opt_extract_without_path,
|
||||
&opt_overwrite,
|
||||
password) != UNZ_OK)
|
||||
break;
|
||||
|
||||
if ((i+1)<gi.number_entry)
|
||||
{
|
||||
err = unzGoToNextFile(uf);
|
||||
if (err!=UNZ_OK)
|
||||
{
|
||||
printf("error %d with zipfile in unzGoToNextFile\n",err);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int do_extract_onefile(uf,filename,opt_extract_without_path,opt_overwrite,password)
|
||||
unzFile uf;
|
||||
const char* filename;
|
||||
int opt_extract_without_path;
|
||||
int opt_overwrite;
|
||||
const char* password;
|
||||
{
|
||||
int err = UNZ_OK;
|
||||
if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
|
||||
{
|
||||
printf("file %s not found in the zipfile\n",filename);
|
||||
return 2;
|
||||
}
|
||||
|
||||
if (do_extract_currentfile(uf,&opt_extract_without_path,
|
||||
&opt_overwrite,
|
||||
password) == UNZ_OK)
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
int main(argc,argv)
|
||||
int argc;
|
||||
char *argv[];
|
||||
{
|
||||
const char *zipfilename=NULL;
|
||||
const char *filename_to_extract=NULL;
|
||||
const char *password=NULL;
|
||||
char filename_try[MAXFILENAME+16] = "";
|
||||
int i;
|
||||
int ret_value=0;
|
||||
int opt_do_list=0;
|
||||
int opt_do_extract=1;
|
||||
int opt_do_extract_withoutpath=0;
|
||||
int opt_overwrite=0;
|
||||
int opt_extractdir=0;
|
||||
const char *dirname=NULL;
|
||||
unzFile uf=NULL;
|
||||
|
||||
do_banner();
|
||||
if (argc==1)
|
||||
{
|
||||
do_help();
|
||||
return 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
for (i=1;i<argc;i++)
|
||||
{
|
||||
if ((*argv[i])=='-')
|
||||
{
|
||||
const char *p=argv[i]+1;
|
||||
|
||||
while ((*p)!='\0')
|
||||
{
|
||||
char c=*(p++);;
|
||||
if ((c=='l') || (c=='L'))
|
||||
opt_do_list = 1;
|
||||
if ((c=='v') || (c=='V'))
|
||||
opt_do_list = 1;
|
||||
if ((c=='x') || (c=='X'))
|
||||
opt_do_extract = 1;
|
||||
if ((c=='e') || (c=='E'))
|
||||
opt_do_extract = opt_do_extract_withoutpath = 1;
|
||||
if ((c=='o') || (c=='O'))
|
||||
opt_overwrite=1;
|
||||
if ((c=='d') || (c=='D'))
|
||||
{
|
||||
opt_extractdir=1;
|
||||
dirname=argv[i+1];
|
||||
}
|
||||
|
||||
if (((c=='p') || (c=='P')) && (i+1<argc))
|
||||
{
|
||||
password=argv[i+1];
|
||||
i++;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (zipfilename == NULL)
|
||||
zipfilename = argv[i];
|
||||
else if ((filename_to_extract==NULL) && (!opt_extractdir))
|
||||
filename_to_extract = argv[i] ;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (zipfilename!=NULL)
|
||||
{
|
||||
|
||||
# ifdef USEWIN32IOAPI
|
||||
zlib_filefunc64_def ffunc;
|
||||
# endif
|
||||
|
||||
strncpy(filename_try, zipfilename,MAXFILENAME-1);
|
||||
/* strncpy doesnt append the trailing NULL, of the string is too long. */
|
||||
filename_try[ MAXFILENAME ] = '\0';
|
||||
|
||||
# ifdef USEWIN32IOAPI
|
||||
fill_win32_filefunc64A(&ffunc);
|
||||
uf = unzOpen2_64(zipfilename,&ffunc);
|
||||
# else
|
||||
uf = unzOpen64(zipfilename);
|
||||
# endif
|
||||
if (uf==NULL)
|
||||
{
|
||||
strcat(filename_try,".zip");
|
||||
# ifdef USEWIN32IOAPI
|
||||
uf = unzOpen2_64(filename_try,&ffunc);
|
||||
# else
|
||||
uf = unzOpen64(filename_try);
|
||||
# endif
|
||||
}
|
||||
}
|
||||
|
||||
if (uf==NULL)
|
||||
{
|
||||
printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
|
||||
return 1;
|
||||
}
|
||||
printf("%s opened\n",filename_try);
|
||||
|
||||
if (opt_do_list==1)
|
||||
ret_value = do_list(uf);
|
||||
else if (opt_do_extract==1)
|
||||
{
|
||||
#ifdef _WIN32
|
||||
if (opt_extractdir && _chdir(dirname))
|
||||
#else
|
||||
if (opt_extractdir && chdir(dirname))
|
||||
#endif
|
||||
{
|
||||
printf("Error changing into %s, aborting\n", dirname);
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
if (filename_to_extract == NULL)
|
||||
ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
|
||||
else
|
||||
ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
|
||||
}
|
||||
|
||||
unzClose(uf);
|
||||
|
||||
return ret_value;
|
||||
}
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
.\" Hey, EMACS: -*- nroff -*-
|
||||
.TH miniunzip 1 "Nov 7, 2001"
|
||||
.\" Please adjust this date whenever revising the manpage.
|
||||
.\"
|
||||
.\" Some roff macros, for reference:
|
||||
.\" .nh disable hyphenation
|
||||
.\" .hy enable hyphenation
|
||||
.\" .ad l left justify
|
||||
.\" .ad b justify to both left and right margins
|
||||
.\" .nf disable filling
|
||||
.\" .fi enable filling
|
||||
.\" .br insert line break
|
||||
.\" .sp <n> insert n+1 empty lines
|
||||
.\" for manpage-specific macros, see man(7)
|
||||
.SH NAME
|
||||
miniunzip - uncompress and examine ZIP archives
|
||||
.SH SYNOPSIS
|
||||
.B miniunzip
|
||||
.RI [ -exvlo ]
|
||||
zipfile [ files_to_extract ] [-d tempdir]
|
||||
.SH DESCRIPTION
|
||||
.B minizip
|
||||
is a simple tool which allows the extraction of compressed file
|
||||
archives in the ZIP format used by the MS-DOS utility PKZIP. It was
|
||||
written as a demonstration of the
|
||||
.IR zlib (3)
|
||||
library and therefore lack many of the features of the
|
||||
.IR unzip (1)
|
||||
program.
|
||||
.SH OPTIONS
|
||||
A number of options are supported. With the exception of
|
||||
.BI \-d\ tempdir
|
||||
these must be supplied before any
|
||||
other arguments and are:
|
||||
.TP
|
||||
.BI \-l\ ,\ \-\-v
|
||||
List the files in the archive without extracting them.
|
||||
.TP
|
||||
.B \-o
|
||||
Overwrite files without prompting for confirmation.
|
||||
.TP
|
||||
.B \-x
|
||||
Extract files (default).
|
||||
.PP
|
||||
The
|
||||
.I zipfile
|
||||
argument is the name of the archive to process. The next argument can be used
|
||||
to specify a single file to extract from the archive.
|
||||
|
||||
Lastly, the following option can be specified at the end of the command-line:
|
||||
.TP
|
||||
.BI \-d\ tempdir
|
||||
Extract the archive in the directory
|
||||
.I tempdir
|
||||
rather than the current directory.
|
||||
.SH SEE ALSO
|
||||
.BR minizip (1),
|
||||
.BR zlib (3),
|
||||
.BR unzip (1).
|
||||
.SH AUTHOR
|
||||
This program was written by Gilles Vollant. This manual page was
|
||||
written by Mark Brown <broonie@sirena.org.uk>. The -d tempdir option
|
||||
was added by Dirk Eddelbuettel <edd@debian.org>.
|
||||
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