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Updated included libpng and zlib to latest release.

This commit is contained in:
Stephen Anthony 2023-10-25 22:18:46 -02:30
parent b7a89b3f5f
commit 341c6d860c
31 changed files with 989 additions and 1569 deletions
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8
src/lib/libpng/png.c
View File

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -14,7 +14,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_39 Your_png_h_is_not_version_1_6_39;
typedef png_libpng_version_1_6_40 Your_png_h_is_not_version_1_6_40;
#ifdef __GNUC__
/* The version tests may need to be added to, but the problem warning has
@ -815,8 +815,8 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT
#else
return PNG_STRING_NEWLINE \
"libpng version 1.6.39" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2022 Cosmin Truta" PNG_STRING_NEWLINE \
"libpng version 1.6.40" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2023 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \

22
src/lib/libpng/png.h
View File

@ -1,9 +1,9 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.39 - November 20, 2022
* libpng version 1.6.40
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -15,7 +15,7 @@
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.35, July 2018:
* Glenn Randers-Pehrson
* libpng versions 1.6.36, December 2018, through 1.6.39, November 2022:
* libpng versions 1.6.36, December 2018, through 1.6.40, June 2023:
* Cosmin Truta
* See also "Contributing Authors", below.
*/
@ -27,8 +27,8 @@
* PNG Reference Library License version 2
* ---------------------------------------
*
* * Copyright (c) 1995-2022 The PNG Reference Library Authors.
* * Copyright (c) 2018-2022 Cosmin Truta.
* * Copyright (c) 1995-2023 The PNG Reference Library Authors.
* * Copyright (c) 2018-2023 Cosmin Truta.
* * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
* * Copyright (c) 1996-1997 Andreas Dilger.
* * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -239,7 +239,7 @@
* ...
* 1.5.30 15 10530 15.so.15.30[.0]
* ...
* 1.6.39 16 10639 16.so.16.39[.0]
* 1.6.40 16 10640 16.so.16.40[.0]
*
* Henceforth the source version will match the shared-library major and
* minor numbers; the shared-library major version number will be used for
@ -278,8 +278,8 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.39"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.39 - November 20, 2022\n"
#define PNG_LIBPNG_VER_STRING "1.6.40"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.40 - June 21, 2023\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16
@ -287,7 +287,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 39
#define PNG_LIBPNG_VER_RELEASE 40
/* This should be zero for a public release, or non-zero for a
* development version. [Deprecated]
@ -318,7 +318,7 @@
* From version 1.0.1 it is:
* XXYYZZ, where XX=major, YY=minor, ZZ=release
*/
#define PNG_LIBPNG_VER 10639 /* 1.6.39 */
#define PNG_LIBPNG_VER 10640 /* 1.6.40 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@ -428,7 +428,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char* png_libpng_version_1_6_39;
typedef char* png_libpng_version_1_6_40;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*

2
src/lib/libpng/pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine-configurable file for libpng
*
* libpng version 1.6.39
* libpng version 1.6.40
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson

13
src/lib/libpng/pngget.c
View File

@ -1,7 +1,7 @@
/* pngget.c - retrieval of values from info struct
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -21,7 +21,18 @@ png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 flag)
{
if (png_ptr != NULL && info_ptr != NULL)
{
#ifdef PNG_READ_tRNS_SUPPORTED
/* png_handle_PLTE() may have canceled a valid tRNS chunk but left the
* 'valid' flag for the detection of duplicate chunks. Do not report a
* valid tRNS chunk in this case.
*/
if (flag == PNG_INFO_tRNS && png_ptr->num_trans == 0)
return(0);
#endif
return(info_ptr->valid & flag);
}
return(0);
}

6
src/lib/libpng/pnglibconf.h
View File

@ -1,8 +1,8 @@
/* pnglibconf.h - library build configuration */
/* libpng version 1.6.39 */
/* libpng version 1.6.40 */
/* Copyright (c) 2018-2022 Cosmin Truta */
/* Copyright (c) 2018-2023 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
/* This code is released under the libpng license. */
@ -209,7 +209,7 @@
#define PNG_USER_HEIGHT_MAX 1000000
#define PNG_USER_WIDTH_MAX 1000000
#define PNG_ZBUF_SIZE 8192
#define PNG_ZLIB_VERNUM 0x12d0
#define PNG_ZLIB_VERNUM 0x1300
#define PNG_Z_DEFAULT_COMPRESSION (-1)
#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0
#define PNG_Z_DEFAULT_STRATEGY 1

6
src/lib/libpng/pngpriv.h
View File

@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -626,7 +626,7 @@
#define PNG_BACKGROUND_IS_GRAY 0x800U
#define PNG_HAVE_PNG_SIGNATURE 0x1000U
#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */
/* 0x4000U (unused) */
#define PNG_WROTE_eXIf 0x4000U
#define PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */
/* Flags for the transformations the PNG library does on the image data */
@ -1910,7 +1910,7 @@ PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr,
*/
#define PNG_FP_INVALID 512 /* Available for callers as a distinct value */
/* Result codes for the parser (boolean - true meants ok, false means
/* Result codes for the parser (boolean - true means ok, false means
* not ok yet.)
*/
#define PNG_FP_MAYBE 0 /* The number may be valid in the future */

62
src/lib/libpng/pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 1998-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -137,46 +137,40 @@ png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
#ifdef PNG_eXIf_SUPPORTED
void PNGAPI
png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytep eXIf_buf)
png_bytep exif)
{
png_warning(png_ptr, "png_set_eXIf does not work; use png_set_eXIf_1");
PNG_UNUSED(info_ptr)
PNG_UNUSED(eXIf_buf)
PNG_UNUSED(exif)
}
void PNGAPI
png_set_eXIf_1(png_const_structrp png_ptr, png_inforp info_ptr,
png_uint_32 num_exif, png_bytep eXIf_buf)
png_uint_32 num_exif, png_bytep exif)
{
int i;
png_bytep new_exif;
png_debug1(1, "in %s storage function", "eXIf");
if (png_ptr == NULL || info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL ||
(png_ptr->mode & PNG_WROTE_eXIf) != 0)
return;
if (info_ptr->exif)
{
png_free(png_ptr, info_ptr->exif);
info_ptr->exif = NULL;
}
new_exif = png_voidcast(png_bytep, png_malloc_warn(png_ptr, num_exif));
info_ptr->num_exif = num_exif;
info_ptr->exif = png_voidcast(png_bytep, png_malloc_warn(png_ptr,
info_ptr->num_exif));
if (info_ptr->exif == NULL)
if (new_exif == NULL)
{
png_warning(png_ptr, "Insufficient memory for eXIf chunk data");
return;
}
memcpy(new_exif, exif, (size_t)num_exif);
png_free_data(png_ptr, info_ptr, PNG_FREE_EXIF, 0);
info_ptr->num_exif = num_exif;
info_ptr->exif = new_exif;
info_ptr->free_me |= PNG_FREE_EXIF;
for (i = 0; i < (int) info_ptr->num_exif; i++)
info_ptr->exif[i] = eXIf_buf[i];
info_ptr->valid |= PNG_INFO_eXIf;
}
#endif /* eXIf */
@ -237,15 +231,13 @@ png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->hist == NULL)
{
png_warning(png_ptr, "Insufficient memory for hIST chunk data");
return;
}
info_ptr->free_me |= PNG_FREE_HIST;
for (i = 0; i < info_ptr->num_palette; i++)
info_ptr->hist[i] = hist[i];
info_ptr->free_me |= PNG_FREE_HIST;
info_ptr->valid |= PNG_INFO_hIST;
}
#endif
@ -367,6 +359,8 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
memcpy(info_ptr->pcal_purpose, purpose, length);
info_ptr->free_me |= PNG_FREE_PCAL;
png_debug(3, "storing X0, X1, type, and nparams in info");
info_ptr->pcal_X0 = X0;
info_ptr->pcal_X1 = X1;
@ -383,7 +377,6 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_units == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL units");
return;
}
@ -395,7 +388,6 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_params == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL params");
return;
}
@ -413,7 +405,6 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_params[i] == NULL)
{
png_warning(png_ptr, "Insufficient memory for pCAL parameter");
return;
}
@ -421,7 +412,6 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
}
info_ptr->valid |= PNG_INFO_pCAL;
info_ptr->free_me |= PNG_FREE_PCAL;
}
#endif
@ -478,18 +468,17 @@ png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->scal_s_height == NULL)
{
png_free (png_ptr, info_ptr->scal_s_width);
png_free(png_ptr, info_ptr->scal_s_width);
info_ptr->scal_s_width = NULL;
png_warning(png_ptr, "Memory allocation failed while processing sCAL");
return;
}
memcpy(info_ptr->scal_s_height, sheight, lengthh);
info_ptr->valid |= PNG_INFO_sCAL;
info_ptr->free_me |= PNG_FREE_SCAL;
info_ptr->valid |= PNG_INFO_sCAL;
}
# ifdef PNG_FLOATING_POINT_SUPPORTED
@ -625,11 +614,10 @@ png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
if (num_palette > 0)
memcpy(png_ptr->palette, palette, (unsigned int)num_palette *
(sizeof (png_color)));
info_ptr->palette = png_ptr->palette;
info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
info_ptr->free_me |= PNG_FREE_PLTE;
info_ptr->valid |= PNG_INFO_PLTE;
}
@ -1020,8 +1008,8 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
memcpy(info_ptr->trans_alpha, trans_alpha, (size_t)num_trans);
info_ptr->valid |= PNG_INFO_tRNS;
info_ptr->free_me |= PNG_FREE_TRNS;
info_ptr->valid |= PNG_INFO_tRNS;
}
png_ptr->trans_alpha = info_ptr->trans_alpha;
}
@ -1054,8 +1042,8 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
if (num_trans != 0)
{
info_ptr->valid |= PNG_INFO_tRNS;
info_ptr->free_me |= PNG_FREE_TRNS;
info_ptr->valid |= PNG_INFO_tRNS;
}
}
#endif
@ -1089,11 +1077,11 @@ png_set_sPLT(png_const_structrp png_ptr,
{
/* Out of memory or too many chunks */
png_chunk_report(png_ptr, "too many sPLT chunks", PNG_CHUNK_WRITE_ERROR);
return;
}
png_free(png_ptr, info_ptr->splt_palettes);
info_ptr->splt_palettes = np;
info_ptr->free_me |= PNG_FREE_SPLT;
@ -1247,11 +1235,11 @@ png_set_unknown_chunks(png_const_structrp png_ptr,
{
png_chunk_report(png_ptr, "too many unknown chunks",
PNG_CHUNK_WRITE_ERROR);
return;
}
png_free(png_ptr, info_ptr->unknown_chunks);
info_ptr->unknown_chunks = np; /* safe because it is initialized */
info_ptr->free_me |= PNG_FREE_UNKN;

10
src/lib/libpng/pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2018-2023 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -239,7 +239,10 @@ png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
#ifdef PNG_WRITE_eXIf_SUPPORTED
if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
{
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
png_ptr->mode |= PNG_WROTE_eXIf;
}
#endif
#ifdef PNG_WRITE_hIST_SUPPORTED
@ -439,8 +442,9 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
#endif
#ifdef PNG_WRITE_eXIf_SUPPORTED
if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
if ((info_ptr->valid & PNG_INFO_eXIf) != 0 &&
(png_ptr->mode & PNG_WROTE_eXIf) == 0)
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
#endif
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED

24
src/lib/zlib/README
View File

@ -1,6 +1,6 @@
ZLIB DATA COMPRESSION LIBRARY
zlib 1.2.11 is a general purpose data compression library. All the code is
zlib 1.3 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
@ -29,18 +29,17 @@ 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/ .
https://marknelson.us/posts/1997/01/01/zlib-engine.html .
The changes made in version 1.2.11 are documented in the file ChangeLog.
The changes made in version 1.3 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/ .
zlib is available in Java using the java.util.zip package. Follow the API
Documentation link at: https://docs.oracle.com/search/?q=java.util.zip .
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 Perl interface to zlib and bzip2 written by Paul Marquess <pmqs@cpan.org>
can be found at https://github.com/pmqs/IO-Compress .
A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
available in Python 1.5 and later versions, see
@ -64,7 +63,7 @@ Notes for some targets:
- 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
- On Digital Unix 4.0D (formerly 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
@ -84,7 +83,7 @@ Acknowledgments:
Copyright notice:
(C) 1995-2017 Jean-loup Gailly and Mark Adler
(C) 1995-2023 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
@ -108,7 +107,10 @@ Copyright notice:
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.
Gailly and Mark Adler; it does not include third-party code. We make all
contributions to and distributions of this project solely in our personal
capacity, and are not conveying any rights to any intellectual property of
any third parties.
If you redistribute modified sources, we would appreciate that you include in
the file ChangeLog history information documenting your changes. Please read

32
src/lib/zlib/adler32.c
View File

@ -7,8 +7,6 @@
#include "zutil.h"
local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
#define BASE 65521U /* 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 */
@ -60,11 +58,7 @@ local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
#endif
/* ========================================================================= */
uLong ZEXPORT adler32_z(
uLong adler,
const Bytef *buf,
z_size_t len)
{
uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) {
unsigned long sum2;
unsigned n;
@ -131,20 +125,12 @@ uLong ZEXPORT adler32_z(
}
/* ========================================================================= */
uLong ZEXPORT adler32(
uLong adler,
const Bytef *buf,
uInt len)
{
uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len) {
return adler32_z(adler, buf, len);
}
/* ========================================================================= */
local uLong adler32_combine_(
uLong adler1,
uLong adler2,
z_off64_t len2)
{
local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2) {
unsigned long sum1;
unsigned long sum2;
unsigned rem;
@ -169,18 +155,10 @@ local uLong adler32_combine_(
}
/* ========================================================================= */
uLong ZEXPORT adler32_combine(
uLong adler1,
uLong adler2,
z_off_t len2)
{
uLong ZEXPORT adler32_combine(uLong adler1, uLong adler2, z_off_t len2) {
return adler32_combine_(adler1, adler2, len2);
}
uLong ZEXPORT adler32_combine64(
uLong adler1,
uLong adler2,
z_off64_t len2)
{
uLong ZEXPORT adler32_combine64(uLong adler1, uLong adler2, z_off64_t len2) {
return adler32_combine_(adler1, adler2, len2);
}

21
src/lib/zlib/compress.c
View File

@ -19,13 +19,8 @@
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(
Bytef *dest,
uLongf *destLen,
const Bytef *source,
uLong sourceLen,
int level)
{
int ZEXPORT compress2(Bytef *dest, uLongf *destLen, const Bytef *source,
uLong sourceLen, int level) {
z_stream stream;
int err;
const uInt max = (uInt)-1;
@ -65,12 +60,8 @@ int ZEXPORT compress2(
/* ===========================================================================
*/
int ZEXPORT compress(
Bytef *dest,
uLongf *destLen,
const Bytef *source,
uLong sourceLen)
{
int ZEXPORT compress(Bytef *dest, uLongf *destLen, const Bytef *source,
uLong sourceLen) {
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}
@ -78,9 +69,7 @@ int ZEXPORT compress(
If the default memLevel or windowBits for deflateInit() is changed, then
this function needs to be updated.
*/
uLong ZEXPORT compressBound(
uLong sourceLen)
{
uLong ZEXPORT compressBound(uLong sourceLen) {
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
(sourceLen >> 25) + 13;
}

250
src/lib/zlib/crc32.c
View File

@ -1,5 +1,5 @@
/* crc32.c -- compute the CRC-32 of a data stream
* Copyright (C) 1995-2023 Mark Adler
* Copyright (C) 1995-2022 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*
* This interleaved implementation of a CRC makes use of pipelined multiple
@ -103,19 +103,6 @@
# define ARMCRC32
#endif
/* Local functions. */
local z_crc_t multmodp OF((z_crc_t a, z_crc_t b));
local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
local z_word_t byte_swap OF((z_word_t word));
#endif
#if defined(W) && !defined(ARMCRC32)
local z_crc_t crc_word OF((z_word_t data));
local z_word_t crc_word_big OF((z_word_t data));
#endif
#if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
/*
Swap the bytes in a z_word_t to convert between little and big endian. Any
@ -123,9 +110,7 @@ local z_crc_t x2nmodp OF((z_off64_t n, unsigned k));
instruction, if one is available. This assumes that word_t is either 32 bits
or 64 bits.
*/
local z_word_t byte_swap(
z_word_t word)
{
local z_word_t byte_swap(z_word_t word) {
# if W == 8
return
(word & 0xff00000000000000) >> 56 |
@ -146,24 +131,77 @@ local z_word_t byte_swap(
}
#endif
#ifdef DYNAMIC_CRC_TABLE
/* =========================================================================
* Table of powers of x for combining CRC-32s, filled in by make_crc_table()
* below.
*/
local z_crc_t FAR x2n_table[32];
#else
/* =========================================================================
* Tables for byte-wise and braided CRC-32 calculations, and a table of powers
* of x for combining CRC-32s, all made by make_crc_table().
*/
# include "crc32.h"
#endif
/* CRC polynomial. */
#define POLY 0xedb88320 /* p(x) reflected, with x^32 implied */
#ifdef DYNAMIC_CRC_TABLE
/*
Return a(x) multiplied by b(x) modulo p(x), where p(x) is the CRC polynomial,
reflected. For speed, this requires that a not be zero.
*/
local z_crc_t multmodp(z_crc_t a, z_crc_t b) {
z_crc_t m, p;
m = (z_crc_t)1 << 31;
p = 0;
for (;;) {
if (a & m) {
p ^= b;
if ((a & (m - 1)) == 0)
break;
}
m >>= 1;
b = b & 1 ? (b >> 1) ^ POLY : b >> 1;
}
return p;
}
/*
Return x^(n * 2^k) modulo p(x). Requires that x2n_table[] has been
initialized.
*/
local z_crc_t x2nmodp(z_off64_t n, unsigned k) {
z_crc_t p;
p = (z_crc_t)1 << 31; /* x^0 == 1 */
while (n) {
if (n & 1)
p = multmodp(x2n_table[k & 31], p);
n >>= 1;
k++;
}
return p;
}
#ifdef DYNAMIC_CRC_TABLE
/* =========================================================================
* Build the tables for byte-wise and braided CRC-32 calculations, and a table
* of powers of x for combining CRC-32s.
*/
local z_crc_t FAR crc_table[256];
local z_crc_t FAR x2n_table[32];
local void make_crc_table OF((void));
#ifdef W
local z_word_t FAR crc_big_table[256];
local z_crc_t FAR crc_braid_table[W][256];
local z_word_t FAR crc_braid_big_table[W][256];
local void braid OF((z_crc_t [][256], z_word_t [][256], int, int));
local void braid(z_crc_t [][256], z_word_t [][256], int, int);
#endif
#ifdef MAKECRCH
local void write_table OF((FILE *, const z_crc_t FAR *, int));
local void write_table32hi OF((FILE *, const z_word_t FAR *, int));
local void write_table64 OF((FILE *, const z_word_t FAR *, int));
local void write_table(FILE *, const z_crc_t FAR *, int);
local void write_table32hi(FILE *, const z_word_t FAR *, int);
local void write_table64(FILE *, const z_word_t FAR *, int);
#endif /* MAKECRCH */
/*
@ -176,7 +214,6 @@ local void make_crc_table OF((void));
/* Definition of once functionality. */
typedef struct once_s once_t;
local void once OF((once_t *, void (*)(void)));
/* Check for the availability of atomics. */
#if defined(__STDC__) && __STDC_VERSION__ >= 201112L && \
@ -196,10 +233,7 @@ struct once_s {
invoke once() at the same time. The state must be a once_t initialized with
ONCE_INIT.
*/
local void once(state, init)
once_t *state;
void (*init)(void);
{
local void once(once_t *state, void (*init)(void)) {
if (!atomic_load(&state->done)) {
if (atomic_flag_test_and_set(&state->begun))
while (!atomic_load(&state->done))
@ -222,10 +256,7 @@ struct once_s {
/* Test and set. Alas, not atomic, but tries to minimize the period of
vulnerability. */
local int test_and_set OF((int volatile *));
local int test_and_set(
int volatile *flag)
{
local int test_and_set(int volatile *flag) {
int was;
was = *flag;
@ -234,10 +265,7 @@ local int test_and_set(
}
/* Run the provided init() function once. This is not thread-safe. */
local void once(state, init)
once_t *state;
void (*init)(void);
{
local void once(once_t *state, void (*init)(void)) {
if (!state->done) {
if (test_and_set(&state->begun))
while (!state->done)
@ -279,8 +307,7 @@ local once_t made = ONCE_INIT;
combinations of CRC register values and incoming bytes.
*/
local void make_crc_table()
{
local void make_crc_table(void) {
unsigned i, j, n;
z_crc_t p;
@ -447,11 +474,7 @@ local void make_crc_table()
Write the 32-bit values in table[0..k-1] to out, five per line in
hexadecimal separated by commas.
*/
local void write_table(
FILE *out,
const z_crc_t FAR *table,
int k)
{
local void write_table(FILE *out, const z_crc_t FAR *table, int k) {
int n;
for (n = 0; n < k; n++)
@ -464,11 +487,7 @@ local void write_table(
Write the high 32-bits of each value in table[0..k-1] to out, five per line
in hexadecimal separated by commas.
*/
local void write_table32hi(
FILE *out,
const z_word_t FAR *table,
int k)
{
local void write_table32hi(FILE *out, const z_word_t FAR *table, int k) {
int n;
for (n = 0; n < k; n++)
@ -484,11 +503,7 @@ local void write_table32hi(
bits. If not, then the type cast and format string can be adjusted
accordingly.
*/
local void write_table64(
FILE *out,
const z_word_t FAR *table,
int k)
{
local void write_table64(FILE *out, const z_word_t FAR *table, int k) {
int n;
for (n = 0; n < k; n++)
@ -498,8 +513,7 @@ local void write_table64(
}
/* Actually do the deed. */
int main()
{
int main(void) {
make_crc_table();
return 0;
}
@ -511,12 +525,7 @@ int main()
Generate the little and big-endian braid tables for the given n and z_word_t
size w. Each array must have room for w blocks of 256 elements.
*/
local void braid(ltl, big, n, w)
z_crc_t ltl[][256];
z_word_t big[][256];
int n;
int w;
{
local void braid(z_crc_t ltl[][256], z_word_t big[][256], int n, int w) {
int k;
z_crc_t i, p, q;
for (k = 0; k < w; k++) {
@ -531,69 +540,13 @@ local void braid(ltl, big, n, w)
}
#endif
#else /* !DYNAMIC_CRC_TABLE */
/* ========================================================================
* Tables for byte-wise and braided CRC-32 calculations, and a table of powers
* of x for combining CRC-32s, all made by make_crc_table().
*/
#include "crc32.h"
#endif /* DYNAMIC_CRC_TABLE */
/* ========================================================================
* Routines used for CRC calculation. Some are also required for the table
* generation above.
*/
/*
Return a(x) multiplied by b(x) modulo p(x), where p(x) is the CRC polynomial,
reflected. For speed, this requires that a not be zero.
*/
local z_crc_t multmodp(
z_crc_t a,
z_crc_t b)
{
z_crc_t m, p;
m = (z_crc_t)1 << 31;
p = 0;
for (;;) {
if (a & m) {
p ^= b;
if ((a & (m - 1)) == 0)
break;
}
m >>= 1;
b = b & 1 ? (b >> 1) ^ POLY : b >> 1;
}
return p;
}
/*
Return x^(n * 2^k) modulo p(x). Requires that x2n_table[] has been
initialized.
*/
local z_crc_t x2nmodp(
z_off64_t n,
unsigned k)
{
z_crc_t p;
p = (z_crc_t)1 << 31; /* x^0 == 1 */
while (n) {
if (n & 1)
p = multmodp(x2n_table[k & 31], p);
n >>= 1;
k++;
}
return p;
}
/* =========================================================================
* This function can be used by asm versions of crc32(), and to force the
* generation of the CRC tables in a threaded application.
*/
const z_crc_t FAR * ZEXPORT get_crc_table()
{
const z_crc_t FAR * ZEXPORT get_crc_table(void) {
#ifdef DYNAMIC_CRC_TABLE
once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */
@ -619,11 +572,8 @@ const z_crc_t FAR * ZEXPORT get_crc_table()
#define Z_BATCH_ZEROS 0xa10d3d0c /* computed from Z_BATCH = 3990 */
#define Z_BATCH_MIN 800 /* fewest words in a final batch */
unsigned long ZEXPORT crc32_z(
unsigned long crc,
const unsigned char FAR *buf,
z_size_t len)
{
unsigned long ZEXPORT crc32_z(unsigned long crc, const unsigned char FAR *buf,
z_size_t len) {
z_crc_t val;
z_word_t crc1, crc2;
const z_word_t *word;
@ -723,18 +673,14 @@ unsigned long ZEXPORT crc32_z(
least-significant byte of the word as the first byte of data, without any pre
or post conditioning. This is used to combine the CRCs of each braid.
*/
local z_crc_t crc_word(
z_word_t data)
{
local z_crc_t crc_word(z_word_t data) {
int k;
for (k = 0; k < W; k++)
data = (data >> 8) ^ crc_table[data & 0xff];
return (z_crc_t)data;
}
local z_word_t crc_word_big(
z_word_t data)
{
local z_word_t crc_word_big(z_word_t data) {
int k;
for (k = 0; k < W; k++)
data = (data << 8) ^
@ -745,11 +691,8 @@ local z_word_t crc_word_big(
#endif
/* ========================================================================= */
unsigned long ZEXPORT crc32_z(
unsigned long crc,
const unsigned char FAR *buf,
z_size_t len)
{
unsigned long ZEXPORT crc32_z(unsigned long crc, const unsigned char FAR *buf,
z_size_t len) {
/* Return initial CRC, if requested. */
if (buf == Z_NULL) return 0;
@ -781,8 +724,8 @@ unsigned long ZEXPORT crc32_z(
words = (z_word_t const *)buf;
/* Do endian check at execution time instead of compile time, since ARM
processors can change the endianess at execution time. If the
compiler knows what the endianess will be, it can optimize out the
processors can change the endianness at execution time. If the
compiler knows what the endianness will be, it can optimize out the
check and the unused branch. */
endian = 1;
if (*(unsigned char *)&endian) {
@ -1069,20 +1012,13 @@ unsigned long ZEXPORT crc32_z(
#endif
/* ========================================================================= */
unsigned long ZEXPORT crc32(
unsigned long crc,
const unsigned char FAR *buf,
uInt len)
{
unsigned long ZEXPORT crc32(unsigned long crc, const unsigned char FAR *buf,
uInt len) {
return crc32_z(crc, buf, len);
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine64(
uLong crc1,
uLong crc2,
z_off64_t len2)
{
uLong ZEXPORT crc32_combine64(uLong crc1, uLong crc2, z_off64_t len2) {
#ifdef DYNAMIC_CRC_TABLE
once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */
@ -1090,18 +1026,12 @@ uLong ZEXPORT crc32_combine64(
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine(
uLong crc1,
uLong crc2,
z_off_t len2)
{
uLong ZEXPORT crc32_combine(uLong crc1, uLong crc2, z_off_t len2) {
return crc32_combine64(crc1, crc2, (z_off64_t)len2);
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine_gen64(
z_off64_t len2)
{
uLong ZEXPORT crc32_combine_gen64(z_off64_t len2) {
#ifdef DYNAMIC_CRC_TABLE
once(&made, make_crc_table);
#endif /* DYNAMIC_CRC_TABLE */
@ -1109,17 +1039,11 @@ uLong ZEXPORT crc32_combine_gen64(
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine_gen(
z_off_t len2)
{
uLong ZEXPORT crc32_combine_gen(z_off_t len2) {
return crc32_combine_gen64((z_off64_t)len2);
}
/* ========================================================================= */
uLong ZEXPORT crc32_combine_op(
uLong crc1,
uLong crc2,
uLong op)
{
uLong ZEXPORT crc32_combine_op(uLong crc1, uLong crc2, uLong op) {
return multmodp(op, crc1) ^ (crc2 & 0xffffffff);
}

567
src/lib/zlib/deflate.c
View File

@ -52,7 +52,7 @@
#include "deflate.h"
const char deflate_copyright[] =
" deflate 1.2.13 Copyright 1995-2023 Jean-loup Gailly and Mark Adler ";
" deflate 1.3 Copyright 1995-2023 Jean-loup Gailly and 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
@ -60,9 +60,6 @@ const char deflate_copyright[] =
copyright string in the executable of your product.
*/
/* ===========================================================================
* Function prototypes.
*/
typedef enum {
need_more, /* block not completed, need more input or more output */
block_done, /* block flush performed */
@ -70,29 +67,16 @@ typedef enum {
finish_done /* finish done, accept no more input or output */
} block_state;
typedef block_state (*compress_func) OF((deflate_state *s, int flush));
typedef block_state (*compress_func)(deflate_state *s, int flush);
/* Compression function. Returns the block state after the call. */
local int deflateStateCheck OF((z_streamp strm));
local void slide_hash OF((deflate_state *s));
local void fill_window OF((deflate_state *s));
local block_state deflate_stored OF((deflate_state *s, int flush));
local block_state deflate_fast OF((deflate_state *s, int flush));
local block_state deflate_stored(deflate_state *s, int flush);
local block_state deflate_fast(deflate_state *s, int flush);
#ifndef FASTEST
local block_state deflate_slow OF((deflate_state *s, int flush));
#endif
local block_state deflate_rle OF((deflate_state *s, int flush));
local block_state deflate_huff OF((deflate_state *s, int flush));
local void lm_init OF((deflate_state *s));
local void putShortMSB OF((deflate_state *s, uInt b));
local void flush_pending OF((z_streamp strm));
local unsigned read_buf OF((z_streamp strm, Bytef *buf, unsigned size));
local uInt longest_match OF((deflate_state *s, IPos cur_match));
#ifdef ZLIB_DEBUG
local void check_match OF((deflate_state *s, IPos start, IPos match,
int length));
local block_state deflate_slow(deflate_state *s, int flush);
#endif
local block_state deflate_rle(deflate_state *s, int flush);
local block_state deflate_huff(deflate_state *s, int flush);
/* ===========================================================================
* Local data
@ -195,9 +179,12 @@ local const config configuration_table[10] = {
* bit values at the expense of memory usage). We slide even when level == 0 to
* keep the hash table consistent if we switch back to level > 0 later.
*/
local void slide_hash(
deflate_state *s)
{
#if defined(__has_feature)
# if __has_feature(memory_sanitizer)
__attribute__((no_sanitize("memory")))
# endif
#endif
local void slide_hash(deflate_state *s) {
unsigned n, m;
Posf *p;
uInt wsize = s->w_size;
@ -221,29 +208,177 @@ local void slide_hash(
#endif
}
/* ===========================================================================
* Read a new buffer from the current input stream, update the adler32
* and total number of bytes read. All deflate() input goes through
* this function so some applications may wish to modify it to avoid
* allocating a large strm->next_in buffer and copying from it.
* (See also flush_pending()).
*/
local unsigned read_buf(z_streamp strm, Bytef *buf, unsigned size) {
unsigned len = strm->avail_in;
if (len > size) len = size;
if (len == 0) return 0;
strm->avail_in -= len;
zmemcpy(buf, strm->next_in, len);
if (strm->state->wrap == 1) {
strm->adler = adler32(strm->adler, buf, len);
}
#ifdef GZIP
else if (strm->state->wrap == 2) {
strm->adler = crc32(strm->adler, buf, len);
}
#endif
strm->next_in += len;
strm->total_in += len;
return len;
}
/* ===========================================================================
* Fill the window when the lookahead becomes insufficient.
* Updates strstart and lookahead.
*
* IN assertion: lookahead < MIN_LOOKAHEAD
* OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
* At least one byte has been read, or avail_in == 0; reads are
* performed for at least two bytes (required for the zip translate_eol
* option -- not supported here).
*/
local void fill_window(deflate_state *s) {
unsigned n;
unsigned more; /* Amount of free space at the end of the window. */
uInt wsize = s->w_size;
Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
do {
more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
/* Deal with !@#$% 64K limit: */
if (sizeof(int) <= 2) {
if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
more = wsize;
} else if (more == (unsigned)(-1)) {
/* Very unlikely, but possible on 16 bit machine if
* strstart == 0 && lookahead == 1 (input done a byte at time)
*/
more--;
}
}
/* If the window is almost full and there is insufficient lookahead,
* move the upper half to the lower one to make room in the upper half.
*/
if (s->strstart >= wsize + MAX_DIST(s)) {
zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
s->match_start -= wsize;
s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
s->block_start -= (long) wsize;
if (s->insert > s->strstart)
s->insert = s->strstart;
slide_hash(s);
more += wsize;
}
if (s->strm->avail_in == 0) break;
/* If there was no sliding:
* strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
* more == window_size - lookahead - strstart
* => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
* => more >= window_size - 2*WSIZE + 2
* In the BIG_MEM or MMAP case (not yet supported),
* window_size == input_size + MIN_LOOKAHEAD &&
* strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
* Otherwise, window_size == 2*WSIZE so more >= 2.
* If there was sliding, more >= WSIZE. So in all cases, more >= 2.
*/
Assert(more >= 2, "more < 2");
n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
s->lookahead += n;
/* Initialize the hash value now that we have some input: */
if (s->lookahead + s->insert >= MIN_MATCH) {
uInt str = s->strstart - s->insert;
s->ins_h = s->window[str];
UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
#if MIN_MATCH != 3
Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
while (s->insert) {
UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
#ifndef FASTEST
s->prev[str & s->w_mask] = s->head[s->ins_h];
#endif
s->head[s->ins_h] = (Pos)str;
str++;
s->insert--;
if (s->lookahead + s->insert < MIN_MATCH)
break;
}
}
/* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
* but this is not important since only literal bytes will be emitted.
*/
} while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
/* If the WIN_INIT bytes after the end of the current data have never been
* written, then zero those bytes in order to avoid memory check reports of
* the use of uninitialized (or uninitialised as Julian writes) bytes by
* the longest match routines. Update the high water mark for the next
* time through here. WIN_INIT is set to MAX_MATCH since the longest match
* routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
*/
if (s->high_water < s->window_size) {
ulg curr = s->strstart + (ulg)(s->lookahead);
ulg init;
if (s->high_water < curr) {
/* Previous high water mark below current data -- zero WIN_INIT
* bytes or up to end of window, whichever is less.
*/
init = s->window_size - curr;
if (init > WIN_INIT)
init = WIN_INIT;
zmemzero(s->window + curr, (unsigned)init);
s->high_water = curr + init;
}
else if (s->high_water < (ulg)curr + WIN_INIT) {
/* High water mark at or above current data, but below current data
* plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
* to end of window, whichever is less.
*/
init = (ulg)curr + WIN_INIT - s->high_water;
if (init > s->window_size - s->high_water)
init = s->window_size - s->high_water;
zmemzero(s->window + s->high_water, (unsigned)init);
s->high_water += init;
}
}
Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
"not enough room for search");
}
/* ========================================================================= */
int ZEXPORT deflateInit_(
z_streamp strm,
int level,
const char *version,
int stream_size)
{
int ZEXPORT deflateInit_(z_streamp strm, int level, const char *version,
int stream_size) {
return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
Z_DEFAULT_STRATEGY, version, stream_size);
/* To do: ignore strm->next_in if we use it as window */
}
/* ========================================================================= */
int ZEXPORT deflateInit2_(
z_streamp strm,
int level,
int method,
int windowBits,
int memLevel,
int strategy,
const char *version,
int stream_size)
{
int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
int windowBits, int memLevel, int strategy,
const char *version, int stream_size) {
deflate_state *s;
int wrap = 1;
static const char my_version[] = ZLIB_VERSION;
@ -385,9 +520,7 @@ int ZEXPORT deflateInit2_(
/* =========================================================================
* Check for a valid deflate stream state. Return 0 if ok, 1 if not.
*/
local int deflateStateCheck(
z_streamp strm)
{
local int deflateStateCheck(z_streamp strm) {
deflate_state *s;
if (strm == Z_NULL ||
strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
@ -408,11 +541,8 @@ local int deflateStateCheck(
}
/* ========================================================================= */
int ZEXPORT deflateSetDictionary(
z_streamp strm,
const Bytef *dictionary,
uInt dictLength)
{
int ZEXPORT deflateSetDictionary(z_streamp strm, const Bytef *dictionary,
uInt dictLength) {
deflate_state *s;
uInt str, n;
int wrap;
@ -477,11 +607,8 @@ int ZEXPORT deflateSetDictionary(
}
/* ========================================================================= */
int ZEXPORT deflateGetDictionary(
z_streamp strm,
Bytef *dictionary,
uInt *dictLength)
{
int ZEXPORT deflateGetDictionary(z_streamp strm, Bytef *dictionary,
uInt *dictLength) {
deflate_state *s;
uInt len;
@ -499,9 +626,7 @@ int ZEXPORT deflateGetDictionary(
}
/* ========================================================================= */
int ZEXPORT deflateResetKeep(
z_streamp strm)
{
int ZEXPORT deflateResetKeep(z_streamp strm) {
deflate_state *s;
if (deflateStateCheck(strm)) {
@ -536,10 +661,32 @@ int ZEXPORT deflateResetKeep(
return Z_OK;
}
/* ===========================================================================
* Initialize the "longest match" routines for a new zlib stream
*/
local void lm_init(deflate_state *s) {
s->window_size = (ulg)2L*s->w_size;
CLEAR_HASH(s);
/* Set the default configuration parameters:
*/
s->max_lazy_match = configuration_table[s->level].max_lazy;
s->good_match = configuration_table[s->level].good_length;
s->nice_match = configuration_table[s->level].nice_length;
s->max_chain_length = configuration_table[s->level].max_chain;
s->strstart = 0;
s->block_start = 0L;
s->lookahead = 0;
s->insert = 0;
s->match_length = s->prev_length = MIN_MATCH-1;
s->match_available = 0;
s->ins_h = 0;
}
/* ========================================================================= */
int ZEXPORT deflateReset(
z_streamp strm)
{
int ZEXPORT deflateReset(z_streamp strm) {
int ret;
ret = deflateResetKeep(strm);
@ -549,10 +696,7 @@ int ZEXPORT deflateReset(
}
/* ========================================================================= */
int ZEXPORT deflateSetHeader(
z_streamp strm,
gz_headerp head)
{
int ZEXPORT deflateSetHeader(z_streamp strm, gz_headerp head) {
if (deflateStateCheck(strm) || strm->state->wrap != 2)
return Z_STREAM_ERROR;
strm->state->gzhead = head;
@ -560,11 +704,7 @@ int ZEXPORT deflateSetHeader(
}
/* ========================================================================= */
int ZEXPORT deflatePending(
z_streamp strm,
unsigned *pending,
int *bits)
{
int ZEXPORT deflatePending(z_streamp strm, unsigned *pending, int *bits) {
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
if (pending != Z_NULL)
*pending = strm->state->pending;
@ -574,11 +714,7 @@ int ZEXPORT deflatePending(
}
/* ========================================================================= */
int ZEXPORT deflatePrime(
z_streamp strm,
int bits,
int value)
{
int ZEXPORT deflatePrime(z_streamp strm, int bits, int value) {
deflate_state *s;
int put;
@ -601,11 +737,7 @@ int ZEXPORT deflatePrime(
}
/* ========================================================================= */
int ZEXPORT deflateParams(
z_streamp strm,
int level,
int strategy)
{
int ZEXPORT deflateParams(z_streamp strm, int level, int strategy) {
deflate_state *s;
compress_func func;
@ -650,13 +782,8 @@ int ZEXPORT deflateParams(
}
/* ========================================================================= */
int ZEXPORT deflateTune(
z_streamp strm,
int good_length,
int max_lazy,
int nice_length,
int max_chain)
{
int ZEXPORT deflateTune(z_streamp strm, int good_length, int max_lazy,
int nice_length, int max_chain) {
deflate_state *s;
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -692,10 +819,7 @@ int ZEXPORT deflateTune(
*
* Shifts are used to approximate divisions, for speed.
*/
uLong ZEXPORT deflateBound(
z_streamp strm,
uLong sourceLen)
{
uLong ZEXPORT deflateBound(z_streamp strm, uLong sourceLen) {
deflate_state *s;
uLong fixedlen, storelen, wraplen;
@ -751,7 +875,8 @@ uLong ZEXPORT deflateBound(
/* if not default parameters, return one of the conservative bounds */
if (s->w_bits != 15 || s->hash_bits != 8 + 7)
return (s->w_bits <= s->hash_bits ? fixedlen : storelen) + wraplen;
return (s->w_bits <= s->hash_bits && s->level ? fixedlen : storelen) +
wraplen;
/* default settings: return tight bound for that case -- ~0.03% overhead
plus a small constant */
@ -764,10 +889,7 @@ uLong ZEXPORT deflateBound(
* IN assertion: the stream state is correct and there is enough room in
* pending_buf.
*/
local void putShortMSB(
deflate_state *s,
uInt b)
{
local void putShortMSB(deflate_state *s, uInt b) {
put_byte(s, (Byte)(b >> 8));
put_byte(s, (Byte)(b & 0xff));
}
@ -778,9 +900,7 @@ local void putShortMSB(
* applications may wish to modify it to avoid allocating a large
* strm->next_out buffer and copying into it. (See also read_buf()).
*/
local void flush_pending(
z_streamp strm)
{
local void flush_pending(z_streamp strm) {
unsigned len;
deflate_state *s = strm->state;
@ -811,10 +931,7 @@ local void flush_pending(
} while (0)
/* ========================================================================= */
int ZEXPORT deflate(
z_streamp strm,
int flush)
{
int ZEXPORT deflate(z_streamp strm, int flush) {
int old_flush; /* value of flush param for previous deflate call */
deflate_state *s;
@ -1126,9 +1243,7 @@ int ZEXPORT deflate(
}
/* ========================================================================= */
int ZEXPORT deflateEnd(
z_streamp strm)
{
int ZEXPORT deflateEnd(z_streamp strm) {
int status;
if (deflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -1152,11 +1267,10 @@ int ZEXPORT deflateEnd(
* To simplify the source, this is not supported for 16-bit MSDOS (which
* doesn't have enough memory anyway to duplicate compression states).
*/
int ZEXPORT deflateCopy(
z_streamp dest,
z_streamp source)
{
int ZEXPORT deflateCopy(z_streamp dest, z_streamp source) {
#ifdef MAXSEG_64K
(void)dest;
(void)source;
return Z_STREAM_ERROR;
#else
deflate_state *ds;
@ -1204,66 +1318,6 @@ int ZEXPORT deflateCopy(
#endif /* MAXSEG_64K */
}
/* ===========================================================================
* Read a new buffer from the current input stream, update the adler32
* and total number of bytes read. All deflate() input goes through
* this function so some applications may wish to modify it to avoid
* allocating a large strm->next_in buffer and copying from it.
* (See also flush_pending()).
*/
local unsigned read_buf(
z_streamp strm,
Bytef *buf,
unsigned size)
{
unsigned len = strm->avail_in;
if (len > size) len = size;
if (len == 0) return 0;
strm->avail_in -= len;
zmemcpy(buf, strm->next_in, len);
if (strm->state->wrap == 1) {
strm->adler = adler32(strm->adler, buf, len);
}
#ifdef GZIP
else if (strm->state->wrap == 2) {
strm->adler = crc32(strm->adler, buf, len);
}
#endif
strm->next_in += len;
strm->total_in += len;
return len;
}
/* ===========================================================================
* Initialize the "longest match" routines for a new zlib stream
*/
local void lm_init(
deflate_state *s)
{
s->window_size = (ulg)2L*s->w_size;
CLEAR_HASH(s);
/* Set the default configuration parameters:
*/
s->max_lazy_match = configuration_table[s->level].max_lazy;
s->good_match = configuration_table[s->level].good_length;
s->nice_match = configuration_table[s->level].nice_length;
s->max_chain_length = configuration_table[s->level].max_chain;
s->strstart = 0;
s->block_start = 0L;
s->lookahead = 0;
s->insert = 0;
s->match_length = s->prev_length = MIN_MATCH-1;
s->match_available = 0;
s->ins_h = 0;
}
#ifndef FASTEST
/* ===========================================================================
* Set match_start to the longest match starting at the given string and
@ -1274,10 +1328,7 @@ local void lm_init(
* string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
* OUT assertion: the match length is not greater than s->lookahead.
*/
local uInt longest_match(
deflate_state *s,
IPos cur_match)
{
local uInt longest_match(deflate_state *s, IPos cur_match) {
unsigned chain_length = s->max_chain_length;/* max hash chain length */
register Bytef *scan = s->window + s->strstart; /* current string */
register Bytef *match; /* matched string */
@ -1425,10 +1476,7 @@ local uInt longest_match(
/* ---------------------------------------------------------------------------
* Optimized version for FASTEST only
*/
local uInt longest_match(
deflate_state *s,
IPos cur_match)
{
local uInt longest_match(deflate_state *s, IPos cur_match) {
register Bytef *scan = s->window + s->strstart; /* current string */
register Bytef *match; /* matched string */
register int len; /* length of current match */
@ -1489,12 +1537,7 @@ local uInt longest_match(
/* ===========================================================================
* Check that the match at match_start is indeed a match.
*/
local void check_match(
deflate_state *s,
IPos start,
IPos match,
int length)
{
local void check_match(deflate_state *s, IPos start, IPos match, int length) {
/* check that the match is indeed a match */
if (zmemcmp(s->window + match,
s->window + start, length) != EQUAL) {
@ -1514,137 +1557,6 @@ local void check_match(
# define check_match(s, start, match, length)
#endif /* ZLIB_DEBUG */
/* ===========================================================================
* Fill the window when the lookahead becomes insufficient.
* Updates strstart and lookahead.
*
* IN assertion: lookahead < MIN_LOOKAHEAD
* OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
* At least one byte has been read, or avail_in == 0; reads are
* performed for at least two bytes (required for the zip translate_eol
* option -- not supported here).
*/
local void fill_window(
deflate_state *s)
{
unsigned n;
unsigned more; /* Amount of free space at the end of the window. */
uInt wsize = s->w_size;
Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
do {
more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
/* Deal with !@#$% 64K limit: */
if (sizeof(int) <= 2) {
if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
more = wsize;
} else if (more == (unsigned)(-1)) {
/* Very unlikely, but possible on 16 bit machine if
* strstart == 0 && lookahead == 1 (input done a byte at time)
*/
more--;
}
}
/* If the window is almost full and there is insufficient lookahead,
* move the upper half to the lower one to make room in the upper half.
*/
if (s->strstart >= wsize + MAX_DIST(s)) {
zmemcpy(s->window, s->window + wsize, (unsigned)wsize - more);
s->match_start -= wsize;
s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
s->block_start -= (long) wsize;
if (s->insert > s->strstart)
s->insert = s->strstart;
slide_hash(s);
more += wsize;
}
if (s->strm->avail_in == 0) break;
/* If there was no sliding:
* strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
* more == window_size - lookahead - strstart
* => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
* => more >= window_size - 2*WSIZE + 2
* In the BIG_MEM or MMAP case (not yet supported),
* window_size == input_size + MIN_LOOKAHEAD &&
* strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
* Otherwise, window_size == 2*WSIZE so more >= 2.
* If there was sliding, more >= WSIZE. So in all cases, more >= 2.
*/
Assert(more >= 2, "more < 2");
n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
s->lookahead += n;
/* Initialize the hash value now that we have some input: */
if (s->lookahead + s->insert >= MIN_MATCH) {
uInt str = s->strstart - s->insert;
s->ins_h = s->window[str];
UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
#if MIN_MATCH != 3
Call UPDATE_HASH() MIN_MATCH-3 more times
#endif
while (s->insert) {
UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
#ifndef FASTEST
s->prev[str & s->w_mask] = s->head[s->ins_h];
#endif
s->head[s->ins_h] = (Pos)str;
str++;
s->insert--;
if (s->lookahead + s->insert < MIN_MATCH)
break;
}
}
/* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
* but this is not important since only literal bytes will be emitted.
*/
} while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
/* If the WIN_INIT bytes after the end of the current data have never been
* written, then zero those bytes in order to avoid memory check reports of
* the use of uninitialized (or uninitialised as Julian writes) bytes by
* the longest match routines. Update the high water mark for the next
* time through here. WIN_INIT is set to MAX_MATCH since the longest match
* routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
*/
if (s->high_water < s->window_size) {
ulg curr = s->strstart + (ulg)(s->lookahead);
ulg init;
if (s->high_water < curr) {
/* Previous high water mark below current data -- zero WIN_INIT
* bytes or up to end of window, whichever is less.
*/
init = s->window_size - curr;
if (init > WIN_INIT)
init = WIN_INIT;
zmemzero(s->window + curr, (unsigned)init);
s->high_water = curr + init;
}
else if (s->high_water < (ulg)curr + WIN_INIT) {
/* High water mark at or above current data, but below current data
* plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
* to end of window, whichever is less.
*/
init = (ulg)curr + WIN_INIT - s->high_water;
if (init > s->window_size - s->high_water)
init = s->window_size - s->high_water;
zmemzero(s->window + s->high_water, (unsigned)init);
s->high_water += init;
}
}
Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
"not enough room for search");
}
/* ===========================================================================
* Flush the current block, with given end-of-file flag.
* IN assertion: strstart is set to the end of the current match.
@ -1687,10 +1599,7 @@ local void fill_window(
* copied. It is most efficient with large input and output buffers, which
* maximizes the opportunities to have a single copy from next_in to next_out.
*/
local block_state deflate_stored(
deflate_state *s,
int flush)
{
local block_state deflate_stored(deflate_state *s, int flush) {
/* Smallest worthy block size when not flushing or finishing. By default
* this is 32K. This can be as small as 507 bytes for memLevel == 1. For
* large input and output buffers, the stored block size will be larger.
@ -1874,10 +1783,7 @@ local block_state deflate_stored(
* new strings in the dictionary only for unmatched strings or for short
* matches. It is used only for the fast compression options.
*/
local block_state deflate_fast(
deflate_state *s,
int flush)
{
local block_state deflate_fast(deflate_state *s, int flush) {
IPos hash_head; /* head of the hash chain */
int bflush; /* set if current block must be flushed */
@ -1976,10 +1882,7 @@ local block_state deflate_fast(
* evaluation for matches: a match is finally adopted only if there is
* no better match at the next window position.
*/
local block_state deflate_slow(
deflate_state *s,
int flush)
{
local block_state deflate_slow(deflate_state *s, int flush) {
IPos hash_head; /* head of hash chain */
int bflush; /* set if current block must be flushed */
@ -2107,10 +2010,7 @@ local block_state deflate_slow(
* one. Do not maintain a hash table. (It will be regenerated if this run of
* deflate switches away from Z_RLE.)
*/
local block_state deflate_rle(
deflate_state *s,
int flush)
{
local block_state deflate_rle(deflate_state *s, int flush) {
int bflush; /* set if current block must be flushed */
uInt prev; /* byte at distance one to match */
Bytef *scan, *strend; /* scan goes up to strend for length of run */
@ -2181,10 +2081,7 @@ local block_state deflate_rle(
* For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table.
* (It will be regenerated if this run of deflate switches away from Huffman.)
*/
local block_state deflate_huff(
deflate_state *s,
int flush)
{
local block_state deflate_huff(deflate_state *s, int flush) {
int bflush; /* set if current block must be flushed */
for (;;) {

16
src/lib/zlib/deflate.h
View File

@ -291,14 +291,14 @@ typedef struct internal_state {
memory checker errors from longest match routines */
/* in trees.c */
void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
ulg stored_len, int last));
void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
ulg stored_len, int last));
void ZLIB_INTERNAL _tr_init(deflate_state *s);
int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc);
void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
ulg stored_len, int last);
void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s);
void ZLIB_INTERNAL _tr_align(deflate_state *s);
void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
ulg stored_len, int last);
#define d_code(dist) \
((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])

4
src/lib/zlib/gzclose.c
View File

@ -8,9 +8,7 @@
/* gzclose() is in a separate file so that it is linked in only if it is used.
That way the other gzclose functions can be used instead to avoid linking in
unneeded compression or decompression routines. */
int ZEXPORT gzclose(
gzFile file)
{
int ZEXPORT gzclose(gzFile file) {
#ifndef NO_GZCOMPRESS
gz_statep state;

23
src/lib/zlib/gzguts.h
View File

@ -7,9 +7,8 @@
# ifndef _LARGEFILE_SOURCE
# define _LARGEFILE_SOURCE 1
# endif
# ifdef _FILE_OFFSET_BITS
# undef _FILE_OFFSET_BITS
# endif
# undef _FILE_OFFSET_BITS
# undef _TIME_BITS
#endif
#ifdef HAVE_HIDDEN
@ -119,8 +118,8 @@
/* gz* functions always use library allocation functions */
#ifndef STDC
extern voidp malloc OF((uInt size));
extern void free OF((voidpf ptr));
extern voidp malloc(uInt size);
extern void free(voidpf ptr);
#endif
/* get errno and strerror definition */
@ -138,10 +137,10 @@
/* provide prototypes for these when building zlib without LFS */
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int);
ZEXTERN z_off64_t ZEXPORT gztell64(gzFile);
ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile);
#endif
/* default memLevel */
@ -203,9 +202,9 @@ typedef struct {
typedef gz_state FAR *gz_statep;
/* shared functions */
void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
void ZLIB_INTERNAL gz_error(gz_statep, int, const char *);
#if defined UNDER_CE
char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
char ZLIB_INTERNAL *gz_strwinerror(DWORD error);
#endif
/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
@ -214,6 +213,6 @@ char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
#ifdef INT_MAX
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
#else
unsigned ZLIB_INTERNAL gz_intmax OF((void));
unsigned ZLIB_INTERNAL gz_intmax(void);
# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
#endif

101
src/lib/zlib/gzlib.c
View File

@ -15,10 +15,6 @@
#endif
#endif
/* Local functions */
local void gz_reset OF((gz_statep));
local gzFile gz_open OF((const void *, int, const char *));
#if defined UNDER_CE
/* Map the Windows error number in ERROR to a locale-dependent error message
@ -30,9 +26,7 @@ local gzFile gz_open OF((const void *, int, const char *));
The gz_strwinerror function does not change the current setting of
GetLastError. */
char ZLIB_INTERNAL *gz_strwinerror(
DWORD error)
{
char ZLIB_INTERNAL *gz_strwinerror(DWORD error) {
static char buf[1024];
wchar_t *msgbuf;
@ -72,9 +66,7 @@ char ZLIB_INTERNAL *gz_strwinerror(
#endif /* UNDER_CE */
/* Reset gzip file state */
local void gz_reset(
gz_statep state)
{
local void gz_reset(gz_statep state) {
state->x.have = 0; /* no output data available */
if (state->mode == GZ_READ) { /* for reading ... */
state->eof = 0; /* not at end of file */
@ -90,11 +82,7 @@ local void gz_reset(
}
/* Open a gzip file either by name or file descriptor. */
local gzFile gz_open(
const void *path,
int fd,
const char *mode)
{
local gzFile gz_open(const void *path, int fd, const char *mode) {
gz_statep state;
z_size_t len;
int oflag;
@ -269,26 +257,17 @@ local gzFile gz_open(
}
/* -- see zlib.h -- */
gzFile ZEXPORT gzopen(
const char *path,
const char *mode)
{
gzFile ZEXPORT gzopen(const char *path, const char *mode) {
return gz_open(path, -1, mode);
}
/* -- see zlib.h -- */
gzFile ZEXPORT gzopen64(
const char *path,
const char *mode)
{
gzFile ZEXPORT gzopen64(const char *path, const char *mode) {
return gz_open(path, -1, mode);
}
/* -- see zlib.h -- */
gzFile ZEXPORT gzdopen(
int fd,
const char *mode)
{
gzFile ZEXPORT gzdopen(int fd, const char *mode) {
char *path; /* identifier for error messages */
gzFile gz;
@ -306,19 +285,13 @@ gzFile ZEXPORT gzdopen(
/* -- see zlib.h -- */
#ifdef WIDECHAR
gzFile ZEXPORT gzopen_w(
const wchar_t *path,
const char *mode)
{
gzFile ZEXPORT gzopen_w(const wchar_t *path, const char *mode) {
return gz_open(path, -2, mode);
}
#endif
/* -- see zlib.h -- */
int ZEXPORT gzbuffer(
gzFile file,
unsigned size)
{
int ZEXPORT gzbuffer(gzFile file, unsigned size) {
gz_statep state;
/* get internal structure and check integrity */
@ -335,16 +308,14 @@ int ZEXPORT gzbuffer(
/* check and set requested size */
if ((size << 1) < size)
return -1; /* need to be able to double it */
if (size < 2)
size = 2; /* need two bytes to check magic header */
if (size < 8)
size = 8; /* needed to behave well with flushing */
state->want = size;
return 0;
}
/* -- see zlib.h -- */
int ZEXPORT gzrewind(
gzFile file)
{
int ZEXPORT gzrewind(gzFile file) {
gz_statep state;
/* get internal structure */
@ -365,11 +336,7 @@ int ZEXPORT gzrewind(
}
/* -- see zlib.h -- */
z_off64_t ZEXPORT gzseek64(
gzFile file,
z_off64_t offset,
int whence)
{
z_off64_t ZEXPORT gzseek64(gzFile file, z_off64_t offset, int whence) {
unsigned n;
z_off64_t ret;
gz_statep state;
@ -442,11 +409,7 @@ z_off64_t ZEXPORT gzseek64(
}
/* -- see zlib.h -- */
z_off_t ZEXPORT gzseek(
gzFile file,
z_off_t offset,
int whence)
{
z_off_t ZEXPORT gzseek(gzFile file, z_off_t offset, int whence) {
z_off64_t ret;
ret = gzseek64(file, (z_off64_t)offset, whence);
@ -454,9 +417,7 @@ z_off_t ZEXPORT gzseek(
}
/* -- see zlib.h -- */
z_off64_t ZEXPORT gztell64(
gzFile file)
{
z_off64_t ZEXPORT gztell64(gzFile file) {
gz_statep state;
/* get internal structure and check integrity */
@ -471,9 +432,7 @@ z_off64_t ZEXPORT gztell64(
}
/* -- see zlib.h -- */
z_off_t ZEXPORT gztell(
gzFile file)
{
z_off_t ZEXPORT gztell(gzFile file) {
z_off64_t ret;
ret = gztell64(file);
@ -481,9 +440,7 @@ z_off_t ZEXPORT gztell(
}
/* -- see zlib.h -- */
z_off64_t ZEXPORT gzoffset64(
gzFile file)
{
z_off64_t ZEXPORT gzoffset64(gzFile file) {
z_off64_t offset;
gz_statep state;
@ -504,9 +461,7 @@ z_off64_t ZEXPORT gzoffset64(
}
/* -- see zlib.h -- */
z_off_t ZEXPORT gzoffset(
gzFile file)
{
z_off_t ZEXPORT gzoffset(gzFile file) {
z_off64_t ret;
ret = gzoffset64(file);
@ -514,9 +469,7 @@ z_off_t ZEXPORT gzoffset(
}
/* -- see zlib.h -- */
int ZEXPORT gzeof(
gzFile file)
{
int ZEXPORT gzeof(gzFile file) {
gz_statep state;
/* get internal structure and check integrity */
@ -531,10 +484,7 @@ int ZEXPORT gzeof(
}
/* -- see zlib.h -- */
const char * ZEXPORT gzerror(
gzFile file,
int *errnum)
{
const char * ZEXPORT gzerror(gzFile file, int *errnum) {
gz_statep state;
/* get internal structure and check integrity */
@ -552,9 +502,7 @@ const char * ZEXPORT gzerror(
}
/* -- see zlib.h -- */
void ZEXPORT gzclearerr(
gzFile file)
{
void ZEXPORT gzclearerr(gzFile file) {
gz_statep state;
/* get internal structure and check integrity */
@ -578,11 +526,7 @@ void ZEXPORT gzclearerr(
memory). Simply save the error message as a static string. If there is an
allocation failure constructing the error message, then convert the error to
out of memory. */
void ZLIB_INTERNAL gz_error(
gz_statep state,
int err,
const char *msg)
{
void ZLIB_INTERNAL gz_error(gz_statep state, int err, const char *msg) {
/* free previously allocated message and clear */
if (state->msg != NULL) {
if (state->err != Z_MEM_ERROR)
@ -624,8 +568,7 @@ void ZLIB_INTERNAL gz_error(
available) -- we need to do this to cover cases where 2's complement not
used, since C standard permits 1's complement and sign-bit representations,
otherwise we could just use ((unsigned)-1) >> 1 */
unsigned ZLIB_INTERNAL gz_intmax()
{
unsigned ZLIB_INTERNAL gz_intmax(void) {
unsigned p, q;
p = 1;

88
src/lib/zlib/gzread.c
View File

@ -5,25 +5,12 @@
#include "gzguts.h"
/* Local functions */
local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
local int gz_avail OF((gz_statep));
local int gz_look OF((gz_statep));
local int gz_decomp OF((gz_statep));
local int gz_fetch OF((gz_statep));
local int gz_skip OF((gz_statep, z_off64_t));
local z_size_t gz_read OF((gz_statep, voidp, z_size_t));
/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from
state->fd, and update state->eof, state->err, and state->msg as appropriate.
This function needs to loop on read(), since read() is not guaranteed to
read the number of bytes requested, depending on the type of descriptor. */
local int gz_load(
gz_statep state,
unsigned char *buf,
unsigned len,
unsigned *have)
{
local int gz_load(gz_statep state, unsigned char *buf, unsigned len,
unsigned *have) {
int ret;
unsigned get, max = ((unsigned)-1 >> 2) + 1;
@ -53,9 +40,7 @@ local int gz_load(
If strm->avail_in != 0, then the current data is moved to the beginning of
the input buffer, and then the remainder of the buffer is loaded with the
available data from the input file. */
local int gz_avail(
gz_statep state)
{
local int gz_avail(gz_statep state) {
unsigned got;
z_streamp strm = &(state->strm);
@ -88,9 +73,7 @@ local int gz_avail(
case, all further file reads will be directly to either the output buffer or
a user buffer. If decompressing, the inflate state will be initialized.
gz_look() will return 0 on success or -1 on failure. */
local int gz_look(
gz_statep state)
{
local int gz_look(gz_statep state) {
z_streamp strm = &(state->strm);
/* allocate read buffers and inflate memory */
@ -170,9 +153,7 @@ local int gz_look(
data. If the gzip stream completes, state->how is reset to LOOK to look for
the next gzip stream or raw data, once state->x.have is depleted. Returns 0
on success, -1 on failure. */
local int gz_decomp(
gz_statep state)
{
local int gz_decomp(gz_statep state) {
int ret = Z_OK;
unsigned had;
z_streamp strm = &(state->strm);
@ -224,9 +205,7 @@ local int gz_decomp(
looked for to determine whether to copy or decompress. Returns -1 on error,
otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the
end of the input file has been reached and all data has been processed. */
local int gz_fetch(
gz_statep state)
{
local int gz_fetch(gz_statep state) {
z_streamp strm = &(state->strm);
do {
@ -254,10 +233,7 @@ local int gz_fetch(
}
/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */
local int gz_skip(
gz_statep state,
z_off64_t len)
{
local int gz_skip(gz_statep state, z_off64_t len) {
unsigned n;
/* skip over len bytes or reach end-of-file, whichever comes first */
@ -289,11 +265,7 @@ local int gz_skip(
input. Return the number of bytes read. If zero is returned, either the
end of file was reached, or there was an error. state->err must be
consulted in that case to determine which. */
local z_size_t gz_read(
gz_statep state,
voidp buf,
z_size_t len)
{
local z_size_t gz_read(gz_statep state, voidp buf, z_size_t len) {
z_size_t got;
unsigned n;
@ -370,11 +342,7 @@ local z_size_t gz_read(
}
/* -- see zlib.h -- */
int ZEXPORT gzread(
gzFile file,
voidp buf,
unsigned len)
{
int ZEXPORT gzread(gzFile file, voidp buf, unsigned len) {
gz_statep state;
/* get internal structure */
@ -406,12 +374,7 @@ int ZEXPORT gzread(
}
/* -- see zlib.h -- */
z_size_t ZEXPORT gzfread(
voidp buf,
z_size_t size,
z_size_t nitems,
gzFile file)
{
z_size_t ZEXPORT gzfread(voidp buf, z_size_t size, z_size_t nitems, gzFile file) {
z_size_t len;
gz_statep state;
@ -442,9 +405,7 @@ z_size_t ZEXPORT gzfread(
#else
# undef gzgetc
#endif
int ZEXPORT gzgetc(
gzFile file)
{
int ZEXPORT gzgetc(gzFile file) {
unsigned char buf[1];
gz_statep state;
@ -469,17 +430,12 @@ int ZEXPORT gzgetc(
return gz_read(state, buf, 1) < 1 ? -1 : buf[0];
}
int ZEXPORT gzgetc_(
gzFile file)
{
int ZEXPORT gzgetc_(gzFile file) {
return gzgetc(file);
}
/* -- see zlib.h -- */
int ZEXPORT gzungetc(
int c,
gzFile file)
{
int ZEXPORT gzungetc(int c, gzFile file) {
gz_statep state;
/* get internal structure */
@ -487,6 +443,10 @@ int ZEXPORT gzungetc(
return -1;
state = (gz_statep)file;
/* in case this was just opened, set up the input buffer */
if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
(void)gz_look(state);
/* check that we're reading and that there's no (serious) error */
if (state->mode != GZ_READ ||
(state->err != Z_OK && state->err != Z_BUF_ERROR))
@ -536,11 +496,7 @@ int ZEXPORT gzungetc(
}
/* -- see zlib.h -- */
char * ZEXPORT gzgets(
gzFile file,
char *buf,
int len)
{
char * ZEXPORT gzgets(gzFile file, char *buf, int len) {
unsigned left, n;
char *str;
unsigned char *eol;
@ -600,9 +556,7 @@ char * ZEXPORT gzgets(
}
/* -- see zlib.h -- */
int ZEXPORT gzdirect(
gzFile file)
{
int ZEXPORT gzdirect(gzFile file) {
gz_statep state;
/* get internal structure */
@ -620,9 +574,7 @@ int ZEXPORT gzdirect(
}
/* -- see zlib.h -- */
int ZEXPORT gzclose_r(
gzFile file)
{
int ZEXPORT gzclose_r(gzFile file) {
int ret, err;
gz_statep state;

101
src/lib/zlib/gzwrite.c
View File

@ -5,18 +5,10 @@
#include "gzguts.h"
/* Local functions */
local int gz_init OF((gz_statep));
local int gz_comp OF((gz_statep, int));
local int gz_zero OF((gz_statep, z_off64_t));
local z_size_t gz_write OF((gz_statep, voidpc, z_size_t));
/* Initialize state for writing a gzip file. Mark initialization by setting
state->size to non-zero. Return -1 on a memory allocation failure, or 0 on
success. */
local int gz_init(
gz_statep state)
{
local int gz_init(gz_statep state) {
int ret;
z_streamp strm = &(state->strm);
@ -70,10 +62,7 @@ local int gz_init(
deflate() flush value. If flush is Z_FINISH, then the deflate() state is
reset to start a new gzip stream. If gz->direct is true, then simply write
to the output file without compressing, and ignore flush. */
local int gz_comp(
gz_statep state,
int flush)
{
local int gz_comp(gz_statep state, int flush) {
int ret, writ;
unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
z_streamp strm = &(state->strm);
@ -151,10 +140,7 @@ local int gz_comp(
/* Compress len zeros to output. Return -1 on a write error or memory
allocation failure by gz_comp(), or 0 on success. */
local int gz_zero(
gz_statep state,
z_off64_t len)
{
local int gz_zero(gz_statep state, z_off64_t len) {
int first;
unsigned n;
z_streamp strm = &(state->strm);
@ -184,11 +170,7 @@ local int gz_zero(
/* Write len bytes from buf to file. Return the number of bytes written. If
the returned value is less than len, then there was an error. */
local z_size_t gz_write(
gz_statep state,
voidpc buf,
z_size_t len)
{
local z_size_t gz_write(gz_statep state, voidpc buf, z_size_t len) {
z_size_t put = len;
/* if len is zero, avoid unnecessary operations */
@ -252,11 +234,7 @@ local z_size_t gz_write(
}
/* -- see zlib.h -- */
int ZEXPORT gzwrite(
gzFile file,
voidpc buf,
unsigned len)
{
int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len) {
gz_statep state;
/* get internal structure */
@ -280,12 +258,8 @@ int ZEXPORT gzwrite(
}
/* -- see zlib.h -- */
z_size_t ZEXPORT gzfwrite(
voidpc buf,
z_size_t size,
z_size_t nitems,
gzFile file)
{
z_size_t ZEXPORT gzfwrite(voidpc buf, z_size_t size, z_size_t nitems,
gzFile file) {
z_size_t len;
gz_statep state;
@ -310,10 +284,7 @@ z_size_t ZEXPORT gzfwrite(
}
/* -- see zlib.h -- */
int ZEXPORT gzputc(
gzFile file,
int c)
{
int ZEXPORT gzputc(gzFile file, int c) {
unsigned have;
unsigned char buf[1];
gz_statep state;
@ -358,10 +329,7 @@ int ZEXPORT gzputc(
}
/* -- see zlib.h -- */
int ZEXPORT gzputs(
gzFile file,
const char *s)
{
int ZEXPORT gzputs(gzFile file, const char *s) {
z_size_t len, put;
gz_statep state;
@ -388,8 +356,7 @@ int ZEXPORT gzputs(
#include <stdarg.h>
/* -- see zlib.h -- */
int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
{
int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va) {
int len;
unsigned left;
char *next;
@ -460,8 +427,7 @@ int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
return len;
}
int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
{
int ZEXPORTVA gzprintf(gzFile file, const char *format, ...) {
va_list va;
int ret;
@ -474,30 +440,10 @@ int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
#else /* !STDC && !Z_HAVE_STDARG_H */
/* -- see zlib.h -- */
int ZEXPORTVA gzprintf(
gzFile file,
const char *format,
int a1,
int a2,
int a3,
int a4,
int a5,
int a6,
int a7,
int a8,
int a9,
int a10,
int a11,
int a12,
int a13,
int a14,
int a15,
int a16,
int a17,
int a18,
int a19,
int a20)
{
int ZEXPORTVA gzprintf(gzFile file, const char *format, int a1, int a2, int a3,
int a4, int a5, int a6, int a7, int a8, int a9, int a10,
int a11, int a12, int a13, int a14, int a15, int a16,
int a17, int a18, int a19, int a20) {
unsigned len, left;
char *next;
gz_statep state;
@ -579,10 +525,7 @@ int ZEXPORTVA gzprintf(
#endif
/* -- see zlib.h -- */
int ZEXPORT gzflush(
gzFile file,
int flush)
{
int ZEXPORT gzflush(gzFile file, int flush) {
gz_statep state;
/* get internal structure */
@ -611,11 +554,7 @@ int ZEXPORT gzflush(
}
/* -- see zlib.h -- */
int ZEXPORT gzsetparams(
gzFile file,
int level,
int strategy)
{
int ZEXPORT gzsetparams(gzFile file, int level, int strategy) {
gz_statep state;
z_streamp strm;
@ -626,7 +565,7 @@ int ZEXPORT gzsetparams(
strm = &(state->strm);
/* check that we're writing and that there's no error */
if (state->mode != GZ_WRITE || state->err != Z_OK)
if (state->mode != GZ_WRITE || state->err != Z_OK || state->direct)
return Z_STREAM_ERROR;
/* if no change is requested, then do nothing */
@ -653,9 +592,7 @@ int ZEXPORT gzsetparams(
}
/* -- see zlib.h -- */
int ZEXPORT gzclose_w(
gzFile file)
{
int ZEXPORT gzclose_w(gzFile file) {
int ret = Z_OK;
gz_statep state;

32
src/lib/zlib/infback.c
View File

@ -1,5 +1,5 @@
/* infback.c -- inflate using a call-back interface
* Copyright (C) 1995-2023 Mark Adler
* Copyright (C) 1995-2022 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -15,9 +15,6 @@
#include "inflate.h"
#include "inffast.h"
/* function prototypes */
local void fixedtables OF((struct inflate_state FAR *state));
/*
strm provides memory allocation functions in zalloc and zfree, or
Z_NULL to use the library memory allocation functions.
@ -25,13 +22,9 @@ local void fixedtables OF((struct inflate_state FAR *state));
windowBits is in the range 8..15, and window is a user-supplied
window and output buffer that is 2**windowBits bytes.
*/
int ZEXPORT inflateBackInit_(
z_streamp strm,
int windowBits,
unsigned char FAR *window,
const char *version,
int stream_size)
{
int ZEXPORT inflateBackInit_(z_streamp strm, int windowBits,
unsigned char FAR *window, const char *version,
int stream_size) {
struct inflate_state FAR *state;
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
@ -80,9 +73,7 @@ int ZEXPORT inflateBackInit_(
used for threaded applications, since the rewriting of the tables and virgin
may not be thread-safe.
*/
local void fixedtables(
struct inflate_state FAR *state)
{
local void fixedtables(struct inflate_state FAR *state) {
#ifdef BUILDFIXED
static int virgin = 1;
static code *lenfix, *distfix;
@ -248,13 +239,8 @@ local void fixedtables(
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 inflateBack(
z_streamp strm,
in_func in,
void FAR *in_desc,
out_func out,
void FAR *out_desc)
{
int ZEXPORT inflateBack(z_streamp 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 */
@ -632,9 +618,7 @@ int ZEXPORT inflateBack(
return ret;
}
int ZEXPORT inflateBackEnd(
z_streamp strm)
{
int ZEXPORT inflateBackEnd(z_streamp strm) {
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
return Z_STREAM_ERROR;
ZFREE(strm, strm->state);

5
src/lib/zlib/inffast.c
View File

@ -47,10 +47,7 @@
requires strm->avail_out >= 258 for each loop to avoid checking for
output space.
*/
void ZLIB_INTERNAL inflate_fast(
z_streamp strm,
unsigned start)
{
void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
struct inflate_state FAR *state;
z_const unsigned char FAR *in; /* local strm->next_in */
z_const unsigned char FAR *last; /* have enough input while in < last */

2
src/lib/zlib/inffast.h
View File

@ -8,4 +8,4 @@
subject to change. Applications should only use zlib.h.
*/
void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));
void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start);

131
src/lib/zlib/inflate.c
View File

@ -1,5 +1,5 @@
/* inflate.c -- zlib decompression
* Copyright (C) 1995-2023 Mark Adler
* Copyright (C) 1995-2022 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -91,20 +91,7 @@
# endif
#endif
/* function prototypes */
local int inflateStateCheck OF((z_streamp strm));
local void fixedtables OF((struct inflate_state FAR *state));
local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
unsigned copy));
#ifdef BUILDFIXED
void makefixed OF((void));
#endif
local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
unsigned len));
local int inflateStateCheck(
z_streamp strm)
{
local int inflateStateCheck(z_streamp strm) {
struct inflate_state FAR *state;
if (strm == Z_NULL ||
strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0)
@ -116,9 +103,7 @@ local int inflateStateCheck(
return 0;
}
int ZEXPORT inflateResetKeep(
z_streamp strm)
{
int ZEXPORT inflateResetKeep(z_streamp strm) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -142,9 +127,7 @@ int ZEXPORT inflateResetKeep(
return Z_OK;
}
int ZEXPORT inflateReset(
z_streamp strm)
{
int ZEXPORT inflateReset(z_streamp strm) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -155,10 +138,7 @@ int ZEXPORT inflateReset(
return inflateResetKeep(strm);
}
int ZEXPORT inflateReset2(
z_streamp strm,
int windowBits)
{
int ZEXPORT inflateReset2(z_streamp strm, int windowBits) {
int wrap;
struct inflate_state FAR *state;
@ -195,12 +175,8 @@ int ZEXPORT inflateReset2(
return inflateReset(strm);
}
int ZEXPORT inflateInit2_(
z_streamp strm,
int windowBits,
const char *version,
int stream_size)
{
int ZEXPORT inflateInit2_(z_streamp strm, int windowBits,
const char *version, int stream_size) {
int ret;
struct inflate_state FAR *state;
@ -239,22 +215,17 @@ int ZEXPORT inflateInit2_(
return ret;
}
int ZEXPORT inflateInit_(
z_streamp strm,
const char *version,
int stream_size)
{
int ZEXPORT inflateInit_(z_streamp strm, const char *version,
int stream_size) {
return inflateInit2_(strm, DEF_WBITS, version, stream_size);
}
int ZEXPORT inflatePrime(
z_streamp strm,
int bits,
int value)
{
int ZEXPORT inflatePrime(z_streamp strm, int bits, int value) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
if (bits == 0)
return Z_OK;
state = (struct inflate_state FAR *)strm->state;
if (bits < 0) {
state->hold = 0;
@ -278,9 +249,7 @@ int ZEXPORT inflatePrime(
used for threaded applications, since the rewriting of the tables and virgin
may not be thread-safe.
*/
local void fixedtables(
struct inflate_state FAR *state)
{
local void fixedtables(struct inflate_state FAR *state) {
#ifdef BUILDFIXED
static int virgin = 1;
static code *lenfix, *distfix;
@ -342,7 +311,7 @@ local void fixedtables(
a.out > inffixed.h
*/
void makefixed()
void makefixed(void)
{
unsigned low, size;
struct inflate_state state;
@ -396,11 +365,7 @@ void makefixed()
output will fall in the output data, making match copies simpler and faster.
The advantage may be dependent on the size of the processor's data caches.
*/
local int updatewindow(
z_streamp strm,
const Bytef *end,
unsigned copy)
{
local int updatewindow(z_streamp strm, const Bytef *end, unsigned copy) {
struct inflate_state FAR *state;
unsigned dist;
@ -622,10 +587,7 @@ local int updatewindow(
will return Z_BUF_ERROR if it has not reached the end of the stream.
*/
int ZEXPORT inflate(
z_streamp strm,
int flush)
{
int ZEXPORT inflate(z_streamp strm, int flush) {
struct inflate_state FAR *state;
z_const unsigned char FAR *next; /* next input */
unsigned char FAR *put; /* next output */
@ -1301,9 +1263,7 @@ int ZEXPORT inflate(
return ret;
}
int ZEXPORT inflateEnd(
z_streamp strm)
{
int ZEXPORT inflateEnd(z_streamp strm) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm))
return Z_STREAM_ERROR;
@ -1315,11 +1275,8 @@ int ZEXPORT inflateEnd(
return Z_OK;
}
int ZEXPORT inflateGetDictionary(
z_streamp strm,
Bytef *dictionary,
uInt *dictLength)
{
int ZEXPORT inflateGetDictionary(z_streamp strm, Bytef *dictionary,
uInt *dictLength) {
struct inflate_state FAR *state;
/* check state */
@ -1338,11 +1295,8 @@ int ZEXPORT inflateGetDictionary(
return Z_OK;
}
int ZEXPORT inflateSetDictionary(
z_streamp strm,
const Bytef *dictionary,
uInt dictLength)
{
int ZEXPORT inflateSetDictionary(z_streamp strm, const Bytef *dictionary,
uInt dictLength) {
struct inflate_state FAR *state;
unsigned long dictid;
int ret;
@ -1373,10 +1327,7 @@ int ZEXPORT inflateSetDictionary(
return Z_OK;
}
int ZEXPORT inflateGetHeader(
z_streamp strm,
gz_headerp head)
{
int ZEXPORT inflateGetHeader(z_streamp strm, gz_headerp head) {
struct inflate_state FAR *state;
/* check state */
@ -1401,11 +1352,8 @@ int ZEXPORT inflateGetHeader(
called again with more data and the *have state. *have is initialized to
zero for the first call.
*/
local unsigned syncsearch(
unsigned FAR *have,
const unsigned char FAR *buf,
unsigned len)
{
local unsigned syncsearch(unsigned FAR *have, const unsigned char FAR *buf,
unsigned len) {
unsigned got;
unsigned next;
@ -1424,9 +1372,7 @@ local unsigned syncsearch(
return next;
}
int ZEXPORT inflateSync(
z_streamp strm)
{
int ZEXPORT inflateSync(z_streamp strm) {
unsigned len; /* number of bytes to look at or looked at */
int flags; /* temporary to save header status */
unsigned long in, out; /* temporary to save total_in and total_out */
@ -1482,9 +1428,7 @@ int ZEXPORT inflateSync(
block. When decompressing, PPP checks that at the end of input packet,
inflate is waiting for these length bytes.
*/
int ZEXPORT inflateSyncPoint(
z_streamp strm)
{
int ZEXPORT inflateSyncPoint(z_streamp strm) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -1492,10 +1436,7 @@ int ZEXPORT inflateSyncPoint(
return state->mode == STORED && state->bits == 0;
}
int ZEXPORT inflateCopy(
z_streamp dest,
z_streamp source)
{
int ZEXPORT inflateCopy(z_streamp dest, z_streamp source) {
struct inflate_state FAR *state;
struct inflate_state FAR *copy;
unsigned char FAR *window;
@ -1539,10 +1480,7 @@ int ZEXPORT inflateCopy(
return Z_OK;
}
int ZEXPORT inflateUndermine(
z_streamp strm,
int subvert)
{
int ZEXPORT inflateUndermine(z_streamp strm, int subvert) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -1557,10 +1495,7 @@ int ZEXPORT inflateUndermine(
#endif
}
int ZEXPORT inflateValidate(
z_streamp strm,
int check)
{
int ZEXPORT inflateValidate(z_streamp strm, int check) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
@ -1572,9 +1507,7 @@ int ZEXPORT inflateValidate(
return Z_OK;
}
long ZEXPORT inflateMark(
z_streamp strm)
{
long ZEXPORT inflateMark(z_streamp strm) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm))
@ -1585,9 +1518,7 @@ long ZEXPORT inflateMark(
(state->mode == MATCH ? state->was - state->length : 0));
}
unsigned long ZEXPORT inflateCodesUsed(
z_streamp strm)
{
unsigned long ZEXPORT inflateCodesUsed(z_streamp strm) {
struct inflate_state FAR *state;
if (inflateStateCheck(strm)) return (unsigned long)-1;
state = (struct inflate_state FAR *)strm->state;

15
src/lib/zlib/inftrees.c
View File

@ -9,7 +9,7 @@
#define MAXBITS 15
const char inflate_copyright[] =
" inflate 1.2.13 Copyright 1995-2023 Mark Adler ";
" inflate 1.3 Copyright 1995-2023 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
@ -29,14 +29,9 @@ const char inflate_copyright[] =
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 ZLIB_INTERNAL inflate_table(
codetype type,
unsigned short FAR *lens,
unsigned codes,
code FAR * FAR *table,
unsigned FAR *bits,
unsigned short FAR *work)
{
int ZLIB_INTERNAL inflate_table(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 */
@ -62,7 +57,7 @@ int ZLIB_INTERNAL inflate_table(
35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
static const unsigned short lext[31] = { /* Length codes 257..285 extra */
16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 194, 65};
19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 198, 203};
static const unsigned short dbase[32] = { /* Distance codes 0..29 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,

6
src/lib/zlib/inftrees.h
View File

@ -57,6 +57,6 @@ typedef enum {
DISTS
} codetype;
int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,
unsigned codes, code FAR * FAR *table,
unsigned FAR *bits, unsigned short FAR *work));
int ZLIB_INTERNAL inflate_table(codetype type, unsigned short FAR *lens,
unsigned codes, code FAR * FAR *table,
unsigned FAR *bits, unsigned short FAR *work);

528
src/lib/zlib/trees.c
View File

@ -122,39 +122,116 @@ struct static_tree_desc_s {
int max_length; /* max bit length for the codes */
};
local const static_tree_desc static_l_desc =
#ifdef NO_INIT_GLOBAL_POINTERS
# define TCONST
#else
# define TCONST const
#endif
local TCONST static_tree_desc static_l_desc =
{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
local const static_tree_desc static_d_desc =
local TCONST static_tree_desc static_d_desc =
{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS};
local const static_tree_desc static_bl_desc =
local TCONST static_tree_desc static_bl_desc =
{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS};
/* ===========================================================================
* Local (static) routines in this file.
* Output a short LSB first on the stream.
* IN assertion: there is enough room in pendingBuf.
*/
#define put_short(s, w) { \
put_byte(s, (uch)((w) & 0xff)); \
put_byte(s, (uch)((ush)(w) >> 8)); \
}
local void tr_static_init OF((void));
local void init_block OF((deflate_state *s));
local void pqdownheap OF((deflate_state *s, ct_data *tree, int k));
local void gen_bitlen OF((deflate_state *s, tree_desc *desc));
local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count));
local void build_tree OF((deflate_state *s, tree_desc *desc));
local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code));
local void send_tree OF((deflate_state *s, ct_data *tree, int max_code));
local int build_bl_tree OF((deflate_state *s));
local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
int blcodes));
local void compress_block OF((deflate_state *s, const ct_data *ltree,
const ct_data *dtree));
local int detect_data_type OF((deflate_state *s));
local unsigned bi_reverse OF((unsigned code, int len));
local void bi_windup OF((deflate_state *s));
local void bi_flush OF((deflate_state *s));
/* ===========================================================================
* Reverse the first len bits of a code, using straightforward code (a faster
* method would use a table)
* IN assertion: 1 <= len <= 15
*/
local unsigned bi_reverse(unsigned code, int len) {
register unsigned res = 0;
do {
res |= code & 1;
code >>= 1, res <<= 1;
} while (--len > 0);
return res >> 1;
}
/* ===========================================================================
* Flush the bit buffer, keeping at most 7 bits in it.
*/
local void bi_flush(deflate_state *s) {
if (s->bi_valid == 16) {
put_short(s, s->bi_buf);
s->bi_buf = 0;
s->bi_valid = 0;
} else if (s->bi_valid >= 8) {
put_byte(s, (Byte)s->bi_buf);
s->bi_buf >>= 8;
s->bi_valid -= 8;
}
}
/* ===========================================================================
* Flush the bit buffer and align the output on a byte boundary
*/
local void bi_windup(deflate_state *s) {
if (s->bi_valid > 8) {
put_short(s, s->bi_buf);
} else if (s->bi_valid > 0) {
put_byte(s, (Byte)s->bi_buf);
}
s->bi_buf = 0;
s->bi_valid = 0;
#ifdef ZLIB_DEBUG
s->bits_sent = (s->bits_sent + 7) & ~7;
#endif
}
/* ===========================================================================
* Generate the codes for a given tree and bit counts (which need not be
* optimal).
* IN assertion: the array bl_count contains the bit length statistics for
* the given tree and the field len is set for all tree elements.
* OUT assertion: the field code is set for all tree elements of non
* zero code length.
*/
local void gen_codes(ct_data *tree, int max_code, ushf *bl_count) {
ush next_code[MAX_BITS+1]; /* next code value for each bit length */
unsigned code = 0; /* running code value */
int bits; /* bit index */
int n; /* code index */
/* The distribution counts are first used to generate the code values
* without bit reversal.
*/
for (bits = 1; bits <= MAX_BITS; bits++) {
code = (code + bl_count[bits - 1]) << 1;
next_code[bits] = (ush)code;
}
/* Check that the bit counts in bl_count are consistent. The last code
* must be all ones.
*/
Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
"inconsistent bit counts");
Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
for (n = 0; n <= max_code; n++) {
int len = tree[n].Len;
if (len == 0) continue;
/* Now reverse the bits */
tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
}
}
#ifdef GEN_TREES_H
local void gen_trees_header OF((void));
local void gen_trees_header(void);
#endif
#ifndef ZLIB_DEBUG
@ -167,27 +244,12 @@ local void gen_trees_header OF((void));
send_bits(s, tree[c].Code, tree[c].Len); }
#endif
/* ===========================================================================
* Output a short LSB first on the stream.
* IN assertion: there is enough room in pendingBuf.
*/
#define put_short(s, w) { \
put_byte(s, (uch)((w) & 0xff)); \
put_byte(s, (uch)((ush)(w) >> 8)); \
}
/* ===========================================================================
* Send a value on a given number of bits.
* IN assertion: length <= 16 and value fits in length bits.
*/
#ifdef ZLIB_DEBUG
local void send_bits OF((deflate_state *s, int value, int length));
local void send_bits(
deflate_state *s,
int value,
int length)
{
local void send_bits(deflate_state *s, int value, int length) {
Tracevv((stderr," l %2d v %4x ", length, value));
Assert(length > 0 && length <= 15, "invalid length");
s->bits_sent += (ulg)length;
@ -229,8 +291,7 @@ local void send_bits(
/* ===========================================================================
* Initialize the various 'constant' tables.
*/
local void tr_static_init()
{
local void tr_static_init(void) {
#if defined(GEN_TREES_H) || !defined(STDC)
static int static_init_done = 0;
int n; /* iterates over tree elements */
@ -323,8 +384,7 @@ local void tr_static_init()
((i) == (last)? "\n};\n\n" : \
((i) % (width) == (width) - 1 ? ",\n" : ", "))
void gen_trees_header()
{
void gen_trees_header(void) {
FILE *header = fopen("trees.h", "w");
int i;
@ -373,12 +433,26 @@ void gen_trees_header()
}
#endif /* GEN_TREES_H */
/* ===========================================================================
* Initialize a new block.
*/
local void init_block(deflate_state *s) {
int n; /* iterates over tree elements */
/* Initialize the trees. */
for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;
for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;
for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
s->dyn_ltree[END_BLOCK].Freq = 1;
s->opt_len = s->static_len = 0L;
s->sym_next = s->matches = 0;
}
/* ===========================================================================
* Initialize the tree data structures for a new zlib stream.
*/
void ZLIB_INTERNAL _tr_init(
deflate_state *s)
{
void ZLIB_INTERNAL _tr_init(deflate_state *s) {
tr_static_init();
s->l_desc.dyn_tree = s->dyn_ltree;
@ -401,24 +475,6 @@ void ZLIB_INTERNAL _tr_init(
init_block(s);
}
/* ===========================================================================
* Initialize a new block.
*/
local void init_block(
deflate_state *s)
{
int n; /* iterates over tree elements */
/* Initialize the trees. */
for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;
for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;
for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
s->dyn_ltree[END_BLOCK].Freq = 1;
s->opt_len = s->static_len = 0L;
s->sym_next = s->matches = 0;
}
#define SMALLEST 1
/* Index within the heap array of least frequent node in the Huffman tree */
@ -448,11 +504,7 @@ local void init_block(
* when the heap property is re-established (each father smaller than its
* two sons).
*/
local void pqdownheap(
deflate_state *s,
ct_data *tree,
int k)
{
local void pqdownheap(deflate_state *s, ct_data *tree, int k) {
int v = s->heap[k];
int j = k << 1; /* left son of k */
while (j <= s->heap_len) {
@ -483,10 +535,7 @@ local void pqdownheap(
* The length opt_len is updated; static_len is also updated if stree is
* not null.
*/
local void gen_bitlen(
deflate_state *s,
tree_desc *desc)
{
local void gen_bitlen(deflate_state *s, tree_desc *desc) {
ct_data *tree = desc->dyn_tree;
int max_code = desc->max_code;
const ct_data *stree = desc->stat_desc->static_tree;
@ -561,48 +610,9 @@ local void gen_bitlen(
}
}
/* ===========================================================================
* Generate the codes for a given tree and bit counts (which need not be
* optimal).
* IN assertion: the array bl_count contains the bit length statistics for
* the given tree and the field len is set for all tree elements.
* OUT assertion: the field code is set for all tree elements of non
* zero code length.
*/
local void gen_codes(
ct_data *tree,
int max_code,
ushf *bl_count)
{
ush next_code[MAX_BITS+1]; /* next code value for each bit length */
unsigned code = 0; /* running code value */
int bits; /* bit index */
int n; /* code index */
/* The distribution counts are first used to generate the code values
* without bit reversal.
*/
for (bits = 1; bits <= MAX_BITS; bits++) {
code = (code + bl_count[bits - 1]) << 1;
next_code[bits] = (ush)code;
}
/* Check that the bit counts in bl_count are consistent. The last code
* must be all ones.
*/
Assert (code + bl_count[MAX_BITS] - 1 == (1 << MAX_BITS) - 1,
"inconsistent bit counts");
Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
for (n = 0; n <= max_code; n++) {
int len = tree[n].Len;
if (len == 0) continue;
/* Now reverse the bits */
tree[n].Code = (ush)bi_reverse(next_code[len]++, len);
Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len] - 1));
}
}
#ifdef DUMP_BL_TREE
# include <stdio.h>
#endif
/* ===========================================================================
* Construct one Huffman tree and assigns the code bit strings and lengths.
@ -612,10 +622,7 @@ local void gen_codes(
* and corresponding code. The length opt_len is updated; static_len is
* also updated if stree is not null. The field max_code is set.
*/
local void build_tree(
deflate_state *s,
tree_desc *desc)
{
local void build_tree(deflate_state *s, tree_desc *desc) {
ct_data *tree = desc->dyn_tree;
const ct_data *stree = desc->stat_desc->static_tree;
int elems = desc->stat_desc->elems;
@ -700,11 +707,7 @@ local void build_tree(
* Scan a literal or distance tree to determine the frequencies of the codes
* in the bit length tree.
*/
local void scan_tree(
deflate_state *s,
ct_data *tree,
int max_code)
{
local void scan_tree(deflate_state *s, ct_data *tree, int max_code) {
int n; /* iterates over all tree elements */
int prevlen = -1; /* last emitted length */
int curlen; /* length of current code */
@ -745,11 +748,7 @@ local void scan_tree(
* Send a literal or distance tree in compressed form, using the codes in
* bl_tree.
*/
local void send_tree(
deflate_state *s,
ct_data *tree,
int max_code)
{
local void send_tree(deflate_state *s, ct_data *tree, int max_code) {
int n; /* iterates over all tree elements */
int prevlen = -1; /* last emitted length */
int curlen; /* length of current code */
@ -796,9 +795,7 @@ local void send_tree(
* Construct the Huffman tree for the bit lengths and return the index in
* bl_order of the last bit length code to send.
*/
local int build_bl_tree(
deflate_state *s)
{
local int build_bl_tree(deflate_state *s) {
int max_blindex; /* index of last bit length code of non zero freq */
/* Determine the bit length frequencies for literal and distance trees */
@ -831,12 +828,8 @@ local int build_bl_tree(
* lengths of the bit length codes, the literal tree and the distance tree.
* IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
*/
local void send_all_trees(
deflate_state *s,
int lcodes,
int dcodes,
int blcodes)
{
local void send_all_trees(deflate_state *s, int lcodes, int dcodes,
int blcodes) {
int rank; /* index in bl_order */
Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
@ -862,12 +855,8 @@ local void send_all_trees(
/* ===========================================================================
* Send a stored block
*/
void ZLIB_INTERNAL _tr_stored_block(
deflate_state *s,
charf *buf,
ulg stored_len,
int last)
{
void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
ulg stored_len, int last) {
send_bits(s, (STORED_BLOCK<<1) + last, 3); /* send block type */
bi_windup(s); /* align on byte boundary */
put_short(s, (ush)stored_len);
@ -886,9 +875,7 @@ void ZLIB_INTERNAL _tr_stored_block(
/* ===========================================================================
* Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
*/
void ZLIB_INTERNAL _tr_flush_bits(
deflate_state *s)
{
void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s) {
bi_flush(s);
}
@ -896,9 +883,7 @@ void ZLIB_INTERNAL _tr_flush_bits(
* Send one empty static block to give enough lookahead for inflate.
* This takes 10 bits, of which 7 may remain in the bit buffer.
*/
void ZLIB_INTERNAL _tr_align(
deflate_state *s)
{
void ZLIB_INTERNAL _tr_align(deflate_state *s) {
send_bits(s, STATIC_TREES<<1, 3);
send_code(s, END_BLOCK, static_ltree);
#ifdef ZLIB_DEBUG
@ -907,16 +892,99 @@ void ZLIB_INTERNAL _tr_align(
bi_flush(s);
}
/* ===========================================================================
* Send the block data compressed using the given Huffman trees
*/
local void compress_block(deflate_state *s, const ct_data *ltree,
const ct_data *dtree) {
unsigned dist; /* distance of matched string */
int lc; /* match length or unmatched char (if dist == 0) */
unsigned sx = 0; /* running index in sym_buf */
unsigned code; /* the code to send */
int extra; /* number of extra bits to send */
if (s->sym_next != 0) do {
dist = s->sym_buf[sx++] & 0xff;
dist += (unsigned)(s->sym_buf[sx++] & 0xff) << 8;
lc = s->sym_buf[sx++];
if (dist == 0) {
send_code(s, lc, ltree); /* send a literal byte */
Tracecv(isgraph(lc), (stderr," '%c' ", lc));
} else {
/* Here, lc is the match length - MIN_MATCH */
code = _length_code[lc];
send_code(s, code + LITERALS + 1, ltree); /* send length code */
extra = extra_lbits[code];
if (extra != 0) {
lc -= base_length[code];
send_bits(s, lc, extra); /* send the extra length bits */
}
dist--; /* dist is now the match distance - 1 */
code = d_code(dist);
Assert (code < D_CODES, "bad d_code");
send_code(s, code, dtree); /* send the distance code */
extra = extra_dbits[code];
if (extra != 0) {
dist -= (unsigned)base_dist[code];
send_bits(s, dist, extra); /* send the extra distance bits */
}
} /* literal or match pair ? */
/* Check that the overlay between pending_buf and sym_buf is ok: */
Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
} while (sx < s->sym_next);
send_code(s, END_BLOCK, ltree);
}
/* ===========================================================================
* Check if the data type is TEXT or BINARY, using the following algorithm:
* - TEXT if the two conditions below are satisfied:
* a) There are no non-portable control characters belonging to the
* "block list" (0..6, 14..25, 28..31).
* b) There is at least one printable character belonging to the
* "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
* - BINARY otherwise.
* - The following partially-portable control characters form a
* "gray list" that is ignored in this detection algorithm:
* (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
* IN assertion: the fields Freq of dyn_ltree are set.
*/
local int detect_data_type(deflate_state *s) {
/* block_mask is the bit mask of block-listed bytes
* set bits 0..6, 14..25, and 28..31
* 0xf3ffc07f = binary 11110011111111111100000001111111
*/
unsigned long block_mask = 0xf3ffc07fUL;
int n;
/* Check for non-textual ("block-listed") bytes. */
for (n = 0; n <= 31; n++, block_mask >>= 1)
if ((block_mask & 1) && (s->dyn_ltree[n].Freq != 0))
return Z_BINARY;
/* Check for textual ("allow-listed") bytes. */
if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
|| s->dyn_ltree[13].Freq != 0)
return Z_TEXT;
for (n = 32; n < LITERALS; n++)
if (s->dyn_ltree[n].Freq != 0)
return Z_TEXT;
/* There are no "block-listed" or "allow-listed" bytes:
* this stream either is empty or has tolerated ("gray-listed") bytes only.
*/
return Z_BINARY;
}
/* ===========================================================================
* Determine the best encoding for the current block: dynamic trees, static
* trees or store, and write out the encoded block.
*/
void ZLIB_INTERNAL _tr_flush_block(
deflate_state *s,
charf *buf,
ulg stored_len,
int last)
{
void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
ulg stored_len, int last) {
ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
int max_blindex = 0; /* index of last bit length code of non zero freq */
@ -1013,11 +1081,7 @@ void ZLIB_INTERNAL _tr_flush_block(
* Save the match info and tally the frequency counts. Return true if
* the current block must be flushed.
*/
int ZLIB_INTERNAL _tr_tally(
deflate_state *s,
unsigned dist,
unsigned lc)
{
int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc) {
s->sym_buf[s->sym_next++] = (uch)dist;
s->sym_buf[s->sym_next++] = (uch)(dist >> 8);
s->sym_buf[s->sym_next++] = (uch)lc;
@ -1037,147 +1101,3 @@ int ZLIB_INTERNAL _tr_tally(
}
return (s->sym_next == s->sym_end);
}
/* ===========================================================================
* Send the block data compressed using the given Huffman trees
*/
local void compress_block(
deflate_state *s,
const ct_data *ltree,
const ct_data *dtree)
{
unsigned dist; /* distance of matched string */
int lc; /* match length or unmatched char (if dist == 0) */
unsigned sx = 0; /* running index in sym_buf */
unsigned code; /* the code to send */
int extra; /* number of extra bits to send */
if (s->sym_next != 0) do {
dist = s->sym_buf[sx++] & 0xff;
dist += (unsigned)(s->sym_buf[sx++] & 0xff) << 8;
lc = s->sym_buf[sx++];
if (dist == 0) {
send_code(s, lc, ltree); /* send a literal byte */
Tracecv(isgraph(lc), (stderr," '%c' ", lc));
} else {
/* Here, lc is the match length - MIN_MATCH */
code = _length_code[lc];
send_code(s, code + LITERALS + 1, ltree); /* send length code */
extra = extra_lbits[code];
if (extra != 0) {
lc -= base_length[code];
send_bits(s, lc, extra); /* send the extra length bits */
}
dist--; /* dist is now the match distance - 1 */
code = d_code(dist);
Assert (code < D_CODES, "bad d_code");
send_code(s, code, dtree); /* send the distance code */
extra = extra_dbits[code];
if (extra != 0) {
dist -= (unsigned)base_dist[code];
send_bits(s, dist, extra); /* send the extra distance bits */
}
} /* literal or match pair ? */
/* Check that the overlay between pending_buf and sym_buf is ok: */
Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
} while (sx < s->sym_next);
send_code(s, END_BLOCK, ltree);
}
/* ===========================================================================
* Check if the data type is TEXT or BINARY, using the following algorithm:
* - TEXT if the two conditions below are satisfied:
* a) There are no non-portable control characters belonging to the
* "block list" (0..6, 14..25, 28..31).
* b) There is at least one printable character belonging to the
* "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
* - BINARY otherwise.
* - The following partially-portable control characters form a
* "gray list" that is ignored in this detection algorithm:
* (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
* IN assertion: the fields Freq of dyn_ltree are set.
*/
local int detect_data_type(
deflate_state *s)
{
/* block_mask is the bit mask of block-listed bytes
* set bits 0..6, 14..25, and 28..31
* 0xf3ffc07f = binary 11110011111111111100000001111111
*/
unsigned long block_mask = 0xf3ffc07fUL;
int n;
/* Check for non-textual ("block-listed") bytes. */
for (n = 0; n <= 31; n++, block_mask >>= 1)
if ((block_mask & 1) && (s->dyn_ltree[n].Freq != 0))
return Z_BINARY;
/* Check for textual ("allow-listed") bytes. */
if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
|| s->dyn_ltree[13].Freq != 0)
return Z_TEXT;
for (n = 32; n < LITERALS; n++)
if (s->dyn_ltree[n].Freq != 0)
return Z_TEXT;
/* There are no "block-listed" or "allow-listed" bytes:
* this stream either is empty or has tolerated ("gray-listed") bytes only.
*/
return Z_BINARY;
}
/* ===========================================================================
* Reverse the first len bits of a code, using straightforward code (a faster
* method would use a table)
* IN assertion: 1 <= len <= 15
*/
local unsigned bi_reverse(
unsigned code,
int len)
{
register unsigned res = 0;
do {
res |= code & 1;
code >>= 1, res <<= 1;
} while (--len > 0);
return res >> 1;
}
/* ===========================================================================
* Flush the bit buffer, keeping at most 7 bits in it.
*/
local void bi_flush(
deflate_state *s)
{
if (s->bi_valid == 16) {
put_short(s, s->bi_buf);
s->bi_buf = 0;
s->bi_valid = 0;
} else if (s->bi_valid >= 8) {
put_byte(s, (Byte)s->bi_buf);
s->bi_buf >>= 8;
s->bi_valid -= 8;
}
}
/* ===========================================================================
* Flush the bit buffer and align the output on a byte boundary
*/
local void bi_windup(
deflate_state *s)
{
if (s->bi_valid > 8) {
put_short(s, s->bi_buf);
} else if (s->bi_valid > 0) {
put_byte(s, (Byte)s->bi_buf);
}
s->bi_buf = 0;
s->bi_valid = 0;
#ifdef ZLIB_DEBUG
s->bits_sent = (s->bits_sent + 7) & ~7;
#endif
}

16
src/lib/zlib/uncompr.c
View File

@ -24,12 +24,8 @@
Z_DATA_ERROR if the input data was corrupted, including if the input data is
an incomplete zlib stream.
*/
int ZEXPORT uncompress2(
Bytef *dest,
uLongf *destLen,
const Bytef *source,
uLong *sourceLen)
{
int ZEXPORT uncompress2(Bytef *dest, uLongf *destLen, const Bytef *source,
uLong *sourceLen) {
z_stream stream;
int err;
const uInt max = (uInt)-1;
@ -83,11 +79,7 @@ int ZEXPORT uncompress2(
err;
}
int ZEXPORT uncompress(
Bytef *dest,
uLongf *destLen,
const Bytef *source,
uLong sourceLen)
{
int ZEXPORT uncompress(Bytef *dest, uLongf *destLen, const Bytef *source,
uLong sourceLen) {
return uncompress2(dest, destLen, source, &sourceLen);
}

8
src/lib/zlib/zconf.h
View File

@ -248,7 +248,11 @@
#endif
#ifdef Z_SOLO
typedef unsigned long z_size_t;
# ifdef _WIN64
typedef unsigned long long z_size_t;
# else
typedef unsigned long z_size_t;
# endif
#else
# define z_longlong long long
# if defined(NO_SIZE_T)
@ -527,7 +531,7 @@ typedef uLong FAR uLongf;
#if !defined(_WIN32) && defined(Z_LARGE64)
# define z_off64_t off64_t
#else
# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
# if defined(_WIN32) && !defined(__GNUC__)
# define z_off64_t __int64
# else
# define z_off64_t z_off_t

377
src/lib/zlib/zlib.h
View File

@ -1,5 +1,5 @@
/* zlib.h -- interface of the 'zlib' general purpose compression library
version 1.2.13, October 13th, 2022
version 1.3, August 18th, 2023
Copyright (C) 1995-2023 Jean-loup Gailly and Mark Adler
@ -37,11 +37,11 @@
extern "C" {
#endif
#define ZLIB_VERSION "1.2.13"
#define ZLIB_VERNUM 0x12d0
#define ZLIB_VERSION "1.3"
#define ZLIB_VERNUM 0x1300
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 2
#define ZLIB_VER_REVISION 13
#define ZLIB_VER_MINOR 3
#define ZLIB_VER_REVISION 0
#define ZLIB_VER_SUBREVISION 0
/*
@ -78,8 +78,8 @@ extern "C" {
even in the case of corrupted input.
*/
typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
typedef void (*free_func) OF((voidpf opaque, voidpf address));
typedef voidpf (*alloc_func)(voidpf opaque, uInt items, uInt size);
typedef void (*free_func)(voidpf opaque, voidpf address);
struct internal_state;
@ -217,7 +217,7 @@ typedef gz_header FAR *gz_headerp;
/* basic functions */
ZEXTERN const char * ZEXPORT zlibVersion OF((void));
ZEXTERN const char * ZEXPORT zlibVersion(void);
/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
If the first character differs, the library code actually used is not
compatible with the zlib.h header file used by the application. This check
@ -225,12 +225,12 @@ ZEXTERN const char * ZEXPORT zlibVersion OF((void));
*/
/*
ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
ZEXTERN int ZEXPORT deflateInit(z_streamp strm, int level);
Initializes the internal stream state for compression. The fields
zalloc, zfree and opaque must be initialized before by the caller. If
zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
allocation functions.
allocation functions. total_in, total_out, adler, and msg are initialized.
The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
1 gives best speed, 9 gives best compression, 0 gives no compression at all
@ -247,7 +247,7 @@ ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
*/
ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
ZEXTERN int ZEXPORT deflate(z_streamp strm, int flush);
/*
deflate compresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce
@ -320,8 +320,8 @@ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
with the same value of the flush parameter and more output space (updated
avail_out), until the flush is complete (deflate returns with non-zero
avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
avail_out is greater than six to avoid repeated flush markers due to
avail_out == 0 on return.
avail_out is greater than six when the flush marker begins, in order to avoid
repeated flush markers upon calling deflate() again when avail_out == 0.
If the parameter flush is set to Z_FINISH, pending input is processed,
pending output is flushed and deflate returns with Z_STREAM_END if there was
@ -360,7 +360,7 @@ ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
*/
ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
ZEXTERN int ZEXPORT deflateEnd(z_streamp strm);
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any pending
@ -375,7 +375,7 @@ ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
/*
ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
ZEXTERN int ZEXPORT inflateInit(z_streamp strm);
Initializes the internal stream state for decompression. The fields
next_in, avail_in, zalloc, zfree and opaque must be initialized before by
@ -383,7 +383,8 @@ ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
read or consumed. The allocation of a sliding window will be deferred to
the first call of inflate (if the decompression does not complete on the
first call). If zalloc and zfree are set to Z_NULL, inflateInit updates
them to use default allocation functions.
them to use default allocation functions. total_in, total_out, adler, and
msg are initialized.
inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
@ -397,7 +398,7 @@ ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
*/
ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
ZEXTERN int ZEXPORT inflate(z_streamp strm, int flush);
/*
inflate decompresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce
@ -517,7 +518,7 @@ ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
*/
ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
ZEXTERN int ZEXPORT inflateEnd(z_streamp strm);
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any pending
@ -535,12 +536,12 @@ ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
*/
/*
ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
int level,
int method,
int windowBits,
int memLevel,
int strategy));
ZEXTERN int ZEXPORT deflateInit2(z_streamp strm,
int level,
int method,
int windowBits,
int memLevel,
int strategy);
This is another version of deflateInit with more compression options. The
fields zalloc, zfree and opaque must be initialized before by the caller.
@ -607,9 +608,9 @@ ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
compression: this will be done by deflate().
*/
ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
const Bytef *dictionary,
uInt dictLength));
ZEXTERN int ZEXPORT deflateSetDictionary(z_streamp strm,
const Bytef *dictionary,
uInt dictLength);
/*
Initializes the compression dictionary from the given byte sequence
without producing any compressed output. When using the zlib format, this
@ -651,9 +652,9 @@ ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
not perform any compression: this will be done by deflate().
*/
ZEXTERN int ZEXPORT deflateGetDictionary OF((z_streamp strm,
Bytef *dictionary,
uInt *dictLength));
ZEXTERN int ZEXPORT deflateGetDictionary(z_streamp strm,
Bytef *dictionary,
uInt *dictLength);
/*
Returns the sliding dictionary being maintained by deflate. dictLength is
set to the number of bytes in the dictionary, and that many bytes are copied
@ -673,8 +674,8 @@ ZEXTERN int ZEXPORT deflateGetDictionary OF((z_streamp strm,
stream state is inconsistent.
*/
ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
z_streamp source));
ZEXTERN int ZEXPORT deflateCopy(z_streamp dest,
z_streamp source);
/*
Sets the destination stream as a complete copy of the source stream.
@ -691,20 +692,20 @@ ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
destination.
*/
ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
ZEXTERN int ZEXPORT deflateReset(z_streamp strm);
/*
This function is equivalent to deflateEnd followed by deflateInit, but
does not free and reallocate the internal compression state. The stream
will leave the compression level and any other attributes that may have been
set unchanged.
set unchanged. total_in, total_out, adler, and msg are initialized.
deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL).
*/
ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
int level,
int strategy));
ZEXTERN int ZEXPORT deflateParams(z_streamp strm,
int level,
int strategy);
/*
Dynamically update the compression level and compression strategy. The
interpretation of level and strategy is as in deflateInit2(). This can be
@ -729,7 +730,7 @@ ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
Then no more input data should be provided before the deflateParams() call.
If this is done, the old level and strategy will be applied to the data
compressed before deflateParams(), and the new level and strategy will be
applied to the the data compressed after deflateParams().
applied to the data compressed after deflateParams().
deflateParams returns Z_OK on success, Z_STREAM_ERROR if the source stream
state was inconsistent or if a parameter was invalid, or Z_BUF_ERROR if
@ -740,11 +741,11 @@ ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
retried with more output space.
*/
ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
int good_length,
int max_lazy,
int nice_length,
int max_chain));
ZEXTERN int ZEXPORT deflateTune(z_streamp strm,
int good_length,
int max_lazy,
int nice_length,
int max_chain);
/*
Fine tune deflate's internal compression parameters. This should only be
used by someone who understands the algorithm used by zlib's deflate for
@ -757,8 +758,8 @@ ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
*/
ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
uLong sourceLen));
ZEXTERN uLong ZEXPORT deflateBound(z_streamp strm,
uLong sourceLen);
/*
deflateBound() returns an upper bound on the compressed size after
deflation of sourceLen bytes. It must be called after deflateInit() or
@ -772,9 +773,9 @@ ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
than Z_FINISH or Z_NO_FLUSH are used.
*/
ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
unsigned *pending,
int *bits));
ZEXTERN int ZEXPORT deflatePending(z_streamp strm,
unsigned *pending,
int *bits);
/*
deflatePending() returns the number of bytes and bits of output that have
been generated, but not yet provided in the available output. The bytes not
@ -787,9 +788,9 @@ ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
stream state was inconsistent.
*/
ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
int bits,
int value));
ZEXTERN int ZEXPORT deflatePrime(z_streamp strm,
int bits,
int value);
/*
deflatePrime() inserts bits in the deflate output stream. The intent
is that this function is used to start off the deflate output with the bits
@ -804,8 +805,8 @@ ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
source stream state was inconsistent.
*/
ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
gz_headerp head));
ZEXTERN int ZEXPORT deflateSetHeader(z_streamp strm,
gz_headerp head);
/*
deflateSetHeader() provides gzip header information for when a gzip
stream is requested by deflateInit2(). deflateSetHeader() may be called
@ -821,16 +822,17 @@ ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
gzip file" and give up.
If deflateSetHeader is not used, the default gzip header has text false,
the time set to zero, and os set to 255, with no extra, name, or comment
fields. The gzip header is returned to the default state by deflateReset().
the time set to zero, and os set to the current operating system, with no
extra, name, or comment fields. The gzip header is returned to the default
state by deflateReset().
deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
/*
ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
int windowBits));
ZEXTERN int ZEXPORT inflateInit2(z_streamp strm,
int windowBits);
This is another version of inflateInit with an extra parameter. The
fields next_in, avail_in, zalloc, zfree and opaque must be initialized
@ -883,9 +885,9 @@ ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
deferred until inflate() is called.
*/
ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
const Bytef *dictionary,
uInt dictLength));
ZEXTERN int ZEXPORT inflateSetDictionary(z_streamp strm,
const Bytef *dictionary,
uInt dictLength);
/*
Initializes the decompression dictionary from the given uncompressed byte
sequence. This function must be called immediately after a call of inflate,
@ -906,9 +908,9 @@ ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
inflate().
*/
ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
Bytef *dictionary,
uInt *dictLength));
ZEXTERN int ZEXPORT inflateGetDictionary(z_streamp strm,
Bytef *dictionary,
uInt *dictLength);
/*
Returns the sliding dictionary being maintained by inflate. dictLength is
set to the number of bytes in the dictionary, and that many bytes are copied
@ -921,7 +923,7 @@ ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
stream state is inconsistent.
*/
ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
ZEXTERN int ZEXPORT inflateSync(z_streamp strm);
/*
Skips invalid compressed data until a possible full flush point (see above
for the description of deflate with Z_FULL_FLUSH) can be found, or until all
@ -940,8 +942,8 @@ ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
input each time, until success or end of the input data.
*/
ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
z_streamp source));
ZEXTERN int ZEXPORT inflateCopy(z_streamp dest,
z_streamp source);
/*
Sets the destination stream as a complete copy of the source stream.
@ -956,18 +958,19 @@ ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
destination.
*/
ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
ZEXTERN int ZEXPORT inflateReset(z_streamp strm);
/*
This function is equivalent to inflateEnd followed by inflateInit,
but does not free and reallocate the internal decompression state. The
stream will keep attributes that may have been set by inflateInit2.
total_in, total_out, adler, and msg are initialized.
inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL).
*/
ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
int windowBits));
ZEXTERN int ZEXPORT inflateReset2(z_streamp strm,
int windowBits);
/*
This function is the same as inflateReset, but it also permits changing
the wrap and window size requests. The windowBits parameter is interpreted
@ -980,9 +983,9 @@ ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
the windowBits parameter is invalid.
*/
ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
int bits,
int value));
ZEXTERN int ZEXPORT inflatePrime(z_streamp strm,
int bits,
int value);
/*
This function inserts bits in the inflate input stream. The intent is
that this function is used to start inflating at a bit position in the
@ -1001,7 +1004,7 @@ ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
stream state was inconsistent.
*/
ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
ZEXTERN long ZEXPORT inflateMark(z_streamp strm);
/*
This function returns two values, one in the lower 16 bits of the return
value, and the other in the remaining upper bits, obtained by shifting the
@ -1029,8 +1032,8 @@ ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
source stream state was inconsistent.
*/
ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
gz_headerp head));
ZEXTERN int ZEXPORT inflateGetHeader(z_streamp strm,
gz_headerp head);
/*
inflateGetHeader() requests that gzip header information be stored in the
provided gz_header structure. inflateGetHeader() may be called after
@ -1070,8 +1073,8 @@ ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
*/
/*
ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
unsigned char FAR *window));
ZEXTERN int ZEXPORT inflateBackInit(z_streamp strm, int windowBits,
unsigned char FAR *window);
Initialize the internal stream state for decompression using inflateBack()
calls. The fields zalloc, zfree and opaque in strm must be initialized
@ -1091,13 +1094,13 @@ ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
the version of the header file.
*/
typedef unsigned (*in_func) OF((void FAR *,
z_const unsigned char FAR * FAR *));
typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
typedef unsigned (*in_func)(void FAR *,
z_const unsigned char FAR * FAR *);
typedef int (*out_func)(void FAR *, unsigned char FAR *, unsigned);
ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
in_func in, void FAR *in_desc,
out_func out, void FAR *out_desc));
ZEXTERN int ZEXPORT inflateBack(z_streamp strm,
in_func in, void FAR *in_desc,
out_func out, void FAR *out_desc);
/*
inflateBack() does a raw inflate with a single call using a call-back
interface for input and output. This is potentially more efficient than
@ -1165,7 +1168,7 @@ ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
cannot return Z_OK.
*/
ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
ZEXTERN int ZEXPORT inflateBackEnd(z_streamp strm);
/*
All memory allocated by inflateBackInit() is freed.
@ -1173,7 +1176,7 @@ ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
state was inconsistent.
*/
ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
ZEXTERN uLong ZEXPORT zlibCompileFlags(void);
/* Return flags indicating compile-time options.
Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
@ -1226,8 +1229,8 @@ ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
you need special options.
*/
ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen));
ZEXTERN int ZEXPORT compress(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen);
/*
Compresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total size
@ -1241,9 +1244,9 @@ ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
buffer.
*/
ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int level));
ZEXTERN int ZEXPORT compress2(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int level);
/*
Compresses the source buffer into the destination buffer. The level
parameter has the same meaning as in deflateInit. sourceLen is the byte
@ -1257,15 +1260,15 @@ ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
Z_STREAM_ERROR if the level parameter is invalid.
*/
ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
ZEXTERN uLong ZEXPORT compressBound(uLong sourceLen);
/*
compressBound() returns an upper bound on the compressed size after
compress() or compress2() on sourceLen bytes. It would be used before a
compress() or compress2() call to allocate the destination buffer.
*/
ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen));
ZEXTERN int ZEXPORT uncompress(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen);
/*
Decompresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total size
@ -1282,8 +1285,8 @@ ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
buffer with the uncompressed data up to that point.
*/
ZEXTERN int ZEXPORT uncompress2 OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen));
ZEXTERN int ZEXPORT uncompress2(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen);
/*
Same as uncompress, except that sourceLen is a pointer, where the
length of the source is *sourceLen. On return, *sourceLen is the number of
@ -1302,7 +1305,7 @@ ZEXTERN int ZEXPORT uncompress2 OF((Bytef *dest, uLongf *destLen,
typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */
/*
ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
ZEXTERN gzFile ZEXPORT gzopen(const char *path, const char *mode);
Open the gzip (.gz) file at path for reading and decompressing, or
compressing and writing. The mode parameter is as in fopen ("rb" or "wb")
@ -1339,7 +1342,7 @@ ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
file could not be opened.
*/
ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
ZEXTERN gzFile ZEXPORT gzdopen(int fd, const char *mode);
/*
Associate a gzFile with the file descriptor fd. File descriptors are
obtained from calls like open, dup, creat, pipe or fileno (if the file has
@ -1362,7 +1365,7 @@ ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
will not detect if fd is invalid (unless fd is -1).
*/
ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
ZEXTERN int ZEXPORT gzbuffer(gzFile file, unsigned size);
/*
Set the internal buffer size used by this library's functions for file to
size. The default buffer size is 8192 bytes. This function must be called
@ -1378,7 +1381,7 @@ ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
too late.
*/
ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
ZEXTERN int ZEXPORT gzsetparams(gzFile file, int level, int strategy);
/*
Dynamically update the compression level and strategy for file. See the
description of deflateInit2 for the meaning of these parameters. Previously
@ -1389,7 +1392,7 @@ ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
or Z_MEM_ERROR if there is a memory allocation error.
*/
ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
ZEXTERN int ZEXPORT gzread(gzFile file, voidp buf, unsigned len);
/*
Read and decompress up to len uncompressed bytes from file into buf. If
the input file is not in gzip format, gzread copies the given number of
@ -1419,8 +1422,8 @@ ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
Z_STREAM_ERROR.
*/
ZEXTERN z_size_t ZEXPORT gzfread OF((voidp buf, z_size_t size, z_size_t nitems,
gzFile file));
ZEXTERN z_size_t ZEXPORT gzfread(voidp buf, z_size_t size, z_size_t nitems,
gzFile file);
/*
Read and decompress up to nitems items of size size from file into buf,
otherwise operating as gzread() does. This duplicates the interface of
@ -1445,14 +1448,14 @@ ZEXTERN z_size_t ZEXPORT gzfread OF((voidp buf, z_size_t size, z_size_t nitems,
file, resetting and retrying on end-of-file, when size is not 1.
*/
ZEXTERN int ZEXPORT gzwrite OF((gzFile file, voidpc buf, unsigned len));
ZEXTERN int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len);
/*
Compress and write the len uncompressed bytes at buf to file. gzwrite
returns the number of uncompressed bytes written or 0 in case of error.
*/
ZEXTERN z_size_t ZEXPORT gzfwrite OF((voidpc buf, z_size_t size,
z_size_t nitems, gzFile file));
ZEXTERN z_size_t ZEXPORT gzfwrite(voidpc buf, z_size_t size,
z_size_t nitems, gzFile file);
/*
Compress and write nitems items of size size from buf to file, duplicating
the interface of stdio's fwrite(), with size_t request and return types. If
@ -1465,7 +1468,7 @@ ZEXTERN z_size_t ZEXPORT gzfwrite OF((voidpc buf, z_size_t size,
is returned, and the error state is set to Z_STREAM_ERROR.
*/
ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
ZEXTERN int ZEXPORTVA gzprintf(gzFile file, const char *format, ...);
/*
Convert, format, compress, and write the arguments (...) to file under
control of the string format, as in fprintf. gzprintf returns the number of
@ -1480,7 +1483,7 @@ ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
This can be determined using zlibCompileFlags().
*/
ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
ZEXTERN int ZEXPORT gzputs(gzFile file, const char *s);
/*
Compress and write the given null-terminated string s to file, excluding
the terminating null character.
@ -1488,7 +1491,7 @@ ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
gzputs returns the number of characters written, or -1 in case of error.
*/
ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
ZEXTERN char * ZEXPORT gzgets(gzFile file, char *buf, int len);
/*
Read and decompress bytes from file into buf, until len-1 characters are
read, or until a newline character is read and transferred to buf, or an
@ -1502,13 +1505,13 @@ ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
buf are indeterminate.
*/
ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
ZEXTERN int ZEXPORT gzputc(gzFile file, int c);
/*
Compress and write c, converted to an unsigned char, into file. gzputc
returns the value that was written, or -1 in case of error.
*/
ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
ZEXTERN int ZEXPORT gzgetc(gzFile file);
/*
Read and decompress one byte from file. gzgetc returns this byte or -1
in case of end of file or error. This is implemented as a macro for speed.
@ -1517,7 +1520,7 @@ ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
points to has been clobbered or not.
*/
ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
ZEXTERN int ZEXPORT gzungetc(int c, gzFile file);
/*
Push c back onto the stream for file to be read as the first character on
the next read. At least one character of push-back is always allowed.
@ -1529,7 +1532,7 @@ ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
gzseek() or gzrewind().
*/
ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
ZEXTERN int ZEXPORT gzflush(gzFile file, int flush);
/*
Flush all pending output to file. The parameter flush is as in the
deflate() function. The return value is the zlib error number (see function
@ -1545,8 +1548,8 @@ ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
*/
/*
ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
z_off_t offset, int whence));
ZEXTERN z_off_t ZEXPORT gzseek(gzFile file,
z_off_t offset, int whence);
Set the starting position to offset relative to whence for the next gzread
or gzwrite on file. The offset represents a number of bytes in the
@ -1564,7 +1567,7 @@ ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
would be before the current position.
*/
ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
ZEXTERN int ZEXPORT gzrewind(gzFile file);
/*
Rewind file. This function is supported only for reading.
@ -1572,7 +1575,7 @@ ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
*/
/*
ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
ZEXTERN z_off_t ZEXPORT gztell(gzFile file);
Return the starting position for the next gzread or gzwrite on file.
This position represents a number of bytes in the uncompressed data stream,
@ -1583,7 +1586,7 @@ ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
*/
/*
ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
ZEXTERN z_off_t ZEXPORT gzoffset(gzFile file);
Return the current compressed (actual) read or write offset of file. This
offset includes the count of bytes that precede the gzip stream, for example
@ -1592,7 +1595,7 @@ ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
be used for a progress indicator. On error, gzoffset() returns -1.
*/
ZEXTERN int ZEXPORT gzeof OF((gzFile file));
ZEXTERN int ZEXPORT gzeof(gzFile file);
/*
Return true (1) if the end-of-file indicator for file has been set while
reading, false (0) otherwise. Note that the end-of-file indicator is set
@ -1607,7 +1610,7 @@ ZEXTERN int ZEXPORT gzeof OF((gzFile file));
has grown since the previous end of file was detected.
*/
ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
ZEXTERN int ZEXPORT gzdirect(gzFile file);
/*
Return true (1) if file is being copied directly while reading, or false
(0) if file is a gzip stream being decompressed.
@ -1628,7 +1631,7 @@ ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
gzip file reading and decompression, which may not be desired.)
*/
ZEXTERN int ZEXPORT gzclose OF((gzFile file));
ZEXTERN int ZEXPORT gzclose(gzFile file);
/*
Flush all pending output for file, if necessary, close file and
deallocate the (de)compression state. Note that once file is closed, you
@ -1641,8 +1644,8 @@ ZEXTERN int ZEXPORT gzclose OF((gzFile file));
last read ended in the middle of a gzip stream, or Z_OK on success.
*/
ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
ZEXTERN int ZEXPORT gzclose_r(gzFile file);
ZEXTERN int ZEXPORT gzclose_w(gzFile file);
/*
Same as gzclose(), but gzclose_r() is only for use when reading, and
gzclose_w() is only for use when writing or appending. The advantage to
@ -1653,7 +1656,7 @@ ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
zlib library.
*/
ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
ZEXTERN const char * ZEXPORT gzerror(gzFile file, int *errnum);
/*
Return the error message for the last error which occurred on file.
errnum is set to zlib error number. If an error occurred in the file system
@ -1669,7 +1672,7 @@ ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
functions above that do not distinguish those cases in their return values.
*/
ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
ZEXTERN void ZEXPORT gzclearerr(gzFile file);
/*
Clear the error and end-of-file flags for file. This is analogous to the
clearerr() function in stdio. This is useful for continuing to read a gzip
@ -1686,7 +1689,7 @@ ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
library.
*/
ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
ZEXTERN uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len);
/*
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
return the updated checksum. An Adler-32 value is in the range of a 32-bit
@ -1706,15 +1709,15 @@ ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
if (adler != original_adler) error();
*/
ZEXTERN uLong ZEXPORT adler32_z OF((uLong adler, const Bytef *buf,
z_size_t len));
ZEXTERN uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf,
z_size_t len);
/*
Same as adler32(), but with a size_t length.
*/
/*
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
z_off_t len2));
ZEXTERN uLong ZEXPORT adler32_combine(uLong adler1, uLong adler2,
z_off_t len2);
Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
@ -1724,7 +1727,7 @@ ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
negative, the result has no meaning or utility.
*/
ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
ZEXTERN uLong ZEXPORT crc32(uLong crc, const Bytef *buf, uInt len);
/*
Update a running CRC-32 with the bytes buf[0..len-1] and return the
updated CRC-32. A CRC-32 value is in the range of a 32-bit unsigned integer.
@ -1742,14 +1745,14 @@ ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
if (crc != original_crc) error();
*/
ZEXTERN uLong ZEXPORT crc32_z OF((uLong crc, const Bytef *buf,
z_size_t len));
ZEXTERN uLong ZEXPORT crc32_z(uLong crc, const Bytef *buf,
z_size_t len);
/*
Same as crc32(), but with a size_t length.
*/
/*
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
ZEXTERN uLong ZEXPORT crc32_combine(uLong crc1, uLong crc2, z_off_t len2);
Combine two CRC-32 check values into one. For two sequences of bytes,
seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
@ -1759,13 +1762,13 @@ ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
*/
/*
ZEXTERN uLong ZEXPORT crc32_combine_gen OF((z_off_t len2));
ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t len2);
Return the operator corresponding to length len2, to be used with
crc32_combine_op().
*/
ZEXTERN uLong ZEXPORT crc32_combine_op OF((uLong crc1, uLong crc2, uLong op));
ZEXTERN uLong ZEXPORT crc32_combine_op(uLong crc1, uLong crc2, uLong op);
/*
Give the same result as crc32_combine(), using op in place of len2. op is
is generated from len2 by crc32_combine_gen(). This will be faster than
@ -1778,20 +1781,20 @@ ZEXTERN uLong ZEXPORT crc32_combine_op OF((uLong crc1, uLong crc2, uLong op));
/* deflateInit and inflateInit are macros to allow checking the zlib version
* and the compiler's view of z_stream:
*/
ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
const char *version, int stream_size));
ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
int windowBits, int memLevel,
int strategy, const char *version,
int stream_size));
ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
unsigned char FAR *window,
const char *version,
int stream_size));
ZEXTERN int ZEXPORT deflateInit_(z_streamp strm, int level,
const char *version, int stream_size);
ZEXTERN int ZEXPORT inflateInit_(z_streamp strm,
const char *version, int stream_size);
ZEXTERN int ZEXPORT deflateInit2_(z_streamp strm, int level, int method,
int windowBits, int memLevel,
int strategy, const char *version,
int stream_size);
ZEXTERN int ZEXPORT inflateInit2_(z_streamp strm, int windowBits,
const char *version, int stream_size);
ZEXTERN int ZEXPORT inflateBackInit_(z_streamp strm, int windowBits,
unsigned char FAR *window,
const char *version,
int stream_size);
#ifdef Z_PREFIX_SET
# define z_deflateInit(strm, level) \
deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
@ -1836,7 +1839,7 @@ struct gzFile_s {
unsigned char *next;
z_off64_t pos;
};
ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */
ZEXTERN int ZEXPORT gzgetc_(gzFile file); /* backward compatibility */
#ifdef Z_PREFIX_SET
# undef z_gzgetc
# define z_gzgetc(g) \
@ -1853,13 +1856,13 @@ ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */
* without large file support, _LFS64_LARGEFILE must also be true
*/
#ifdef Z_LARGE64
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off64_t));
ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int);
ZEXTERN z_off64_t ZEXPORT gztell64(gzFile);
ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile);
ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off64_t);
ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off64_t);
ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off64_t);
#endif
#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
@ -1881,50 +1884,50 @@ ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */
# define crc32_combine_gen crc32_combine_gen64
# endif
# ifndef Z_LARGE64
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
ZEXTERN z_off_t ZEXPORT gzseek64(gzFile, z_off_t, int);
ZEXTERN z_off_t ZEXPORT gztell64(gzFile);
ZEXTERN z_off_t ZEXPORT gzoffset64(gzFile);
ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t);
# endif
#else
ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));
ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));
ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine_gen OF((z_off_t));
ZEXTERN gzFile ZEXPORT gzopen(const char *, const char *);
ZEXTERN z_off_t ZEXPORT gzseek(gzFile, z_off_t, int);
ZEXTERN z_off_t ZEXPORT gztell(gzFile);
ZEXTERN z_off_t ZEXPORT gzoffset(gzFile);
ZEXTERN uLong ZEXPORT adler32_combine(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t);
#endif
#else /* Z_SOLO */
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine_gen OF((z_off_t));
ZEXTERN uLong ZEXPORT adler32_combine(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine_gen(z_off_t);
#endif /* !Z_SOLO */
/* undocumented functions */
ZEXTERN const char * ZEXPORT zError OF((int));
ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp));
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void));
ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));
ZEXTERN int ZEXPORT inflateValidate OF((z_streamp, int));
ZEXTERN unsigned long ZEXPORT inflateCodesUsed OF((z_streamp));
ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp));
ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp));
ZEXTERN const char * ZEXPORT zError(int);
ZEXTERN int ZEXPORT inflateSyncPoint(z_streamp);
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table(void);
ZEXTERN int ZEXPORT inflateUndermine(z_streamp, int);
ZEXTERN int ZEXPORT inflateValidate(z_streamp, int);
ZEXTERN unsigned long ZEXPORT inflateCodesUsed(z_streamp);
ZEXTERN int ZEXPORT inflateResetKeep(z_streamp);
ZEXTERN int ZEXPORT deflateResetKeep(z_streamp);
#if defined(_WIN32) && !defined(Z_SOLO)
ZEXTERN gzFile ZEXPORT gzopen_w OF((const wchar_t *path,
const char *mode));
ZEXTERN gzFile ZEXPORT gzopen_w(const wchar_t *path,
const char *mode);
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
# ifndef Z_SOLO
ZEXTERN int ZEXPORTVA gzvprintf Z_ARG((gzFile file,
const char *format,
va_list va));
ZEXTERN int ZEXPORTVA gzvprintf(gzFile file,
const char *format,
va_list va);
# endif
#endif

60
src/lib/zlib/zutil.c
View File

@ -24,13 +24,11 @@ z_const char * const z_errmsg[10] = {
};
const char * ZEXPORT zlibVersion()
{
const char * ZEXPORT zlibVersion(void) {
return ZLIB_VERSION;
}
uLong ZEXPORT zlibCompileFlags()
{
uLong ZEXPORT zlibCompileFlags(void) {
uLong flags;
flags = 0;
@ -121,9 +119,7 @@ uLong ZEXPORT zlibCompileFlags()
# endif
int ZLIB_INTERNAL z_verbose = verbose;
void ZLIB_INTERNAL z_error(
char *m)
{
void ZLIB_INTERNAL z_error(char *m) {
fprintf(stderr, "%s\n", m);
exit(1);
}
@ -132,9 +128,7 @@ void ZLIB_INTERNAL z_error(
/* exported to allow conversion of error code to string for compress() and
* uncompress()
*/
const char * ZEXPORT zError(
int err)
{
const char * ZEXPORT zError(int err) {
return ERR_MSG(err);
}
@ -148,22 +142,14 @@ const char * ZEXPORT zError(
#ifndef HAVE_MEMCPY
void ZLIB_INTERNAL zmemcpy(
Bytef* dest,
const Bytef* source,
uInt len)
{
void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len) {
if (len == 0) return;
do {
*dest++ = *source++; /* ??? to be unrolled */
} while (--len != 0);
}
int ZLIB_INTERNAL zmemcmp(
const Bytef* s1,
const Bytef* s2,
uInt len)
{
int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len) {
uInt j;
for (j = 0; j < len; j++) {
@ -172,10 +158,7 @@ int ZLIB_INTERNAL zmemcmp(
return 0;
}
void ZLIB_INTERNAL zmemzero(
Bytef* dest,
uInt len)
{
void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len) {
if (len == 0) return;
do {
*dest++ = 0; /* ??? to be unrolled */
@ -216,8 +199,7 @@ local ptr_table table[MAX_PTR];
* a protected system like OS/2. Use Microsoft C instead.
*/
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
{
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size) {
voidpf buf;
ulg bsize = (ulg)items*size;
@ -242,8 +224,7 @@ voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size)
return buf;
}
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
{
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr) {
int n;
(void)opaque;
@ -279,14 +260,12 @@ void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
# define _hfree hfree
#endif
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size)
{
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, uInt items, uInt size) {
(void)opaque;
return _halloc((long)items, size);
}
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
{
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr) {
(void)opaque;
_hfree(ptr);
}
@ -299,25 +278,18 @@ void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr)
#ifndef MY_ZCALLOC /* Any system without a special alloc function */
#ifndef STDC
extern voidp malloc OF((uInt size));
extern voidp calloc OF((uInt items, uInt size));
extern void free OF((voidpf ptr));
extern voidp malloc(uInt size);
extern voidp calloc(uInt items, uInt size);
extern void free(voidpf ptr);
#endif
voidpf ZLIB_INTERNAL zcalloc(
voidpf opaque,
unsigned items,
unsigned size)
{
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, unsigned size) {
(void)opaque;
return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
(voidpf)calloc(items, size);
}
void ZLIB_INTERNAL zcfree(
voidpf opaque,
voidpf ptr)
{
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr) {
(void)opaque;
free(ptr);
}

22
src/lib/zlib/zutil.h
View File

@ -1,5 +1,5 @@
/* zutil.h -- internal interface and configuration of the compression library
* Copyright (C) 1995-2023 Jean-loup Gailly, Mark Adler
* Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
@ -191,9 +191,9 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
/* provide prototypes for these when building zlib without LFS */
#if !defined(_WIN32) && \
(!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine_gen64 OF((z_off_t));
ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t);
ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t);
#endif
/* common defaults */
@ -232,16 +232,16 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
# define zmemzero(dest, len) memset(dest, 0, len)
# endif
#else
void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len);
int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len);
void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len);
#endif
/* Diagnostic functions */
#ifdef ZLIB_DEBUG
# include <stdio.h>
extern int ZLIB_INTERNAL z_verbose;
extern void ZLIB_INTERNAL z_error OF((char *m));
extern void ZLIB_INTERNAL z_error(char *m);
# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
# define Trace(x) {if (z_verbose>=0) fprintf x ;}
# define Tracev(x) {if (z_verbose>0) fprintf x ;}
@ -258,9 +258,9 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
#endif
#ifndef Z_SOLO
voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
unsigned size));
void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items,
unsigned size);
void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr);
#endif
#define ZALLOC(strm, items, size) \