645 lines
21 KiB
CMake
645 lines
21 KiB
CMake
# This block is executed when generating an intermediate resource file, not when
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# running in CMake configure mode
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if(_CMRC_GENERATE_MODE)
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# Read in the digits
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file(READ "${INPUT_FILE}" bytes HEX)
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# Format each pair into a character literal. Heuristics seem to favor doing
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# the conversion in groups of five for fastest conversion
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string(REGEX REPLACE "(..)(..)(..)(..)(..)" "'\\\\x\\1','\\\\x\\2','\\\\x\\3','\\\\x\\4','\\\\x\\5'," chars "${bytes}")
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# Since we did this in groups, we have some leftovers to clean up
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string(LENGTH "${bytes}" n_bytes2)
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math(EXPR n_bytes "${n_bytes2} / 2")
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math(EXPR remainder "${n_bytes} % 5") # <-- '5' is the grouping count from above
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set(cleanup_re "$")
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set(cleanup_sub )
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while(remainder)
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set(cleanup_re "(..)${cleanup_re}")
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set(cleanup_sub "'\\\\x\\${remainder}',${cleanup_sub}")
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math(EXPR remainder "${remainder} - 1")
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endwhile()
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if(NOT cleanup_re STREQUAL "$")
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string(REGEX REPLACE "${cleanup_re}" "${cleanup_sub}" chars "${chars}")
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endif()
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string(CONFIGURE [[
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namespace { const char file_array[] = { @chars@ 0 }; }
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namespace cmrc { namespace @NAMESPACE@ { namespace res_chars {
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extern const char* const @SYMBOL@_begin = file_array;
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extern const char* const @SYMBOL@_end = file_array + @n_bytes@;
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}}}
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]] code)
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file(WRITE "${OUTPUT_FILE}" "${code}")
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# Exit from the script. Nothing else needs to be processed
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return()
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endif()
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set(_version 2.0.0)
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cmake_minimum_required(VERSION 3.3)
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include(CMakeParseArguments)
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if(COMMAND cmrc_add_resource_library)
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if(NOT DEFINED _CMRC_VERSION OR NOT (_version STREQUAL _CMRC_VERSION))
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message(WARNING "More than one CMakeRC version has been included in this project.")
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endif()
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# CMakeRC has already been included! Don't do anything
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return()
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endif()
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set(_CMRC_VERSION "${_version}" CACHE INTERNAL "CMakeRC version. Used for checking for conflicts")
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set(_CMRC_SCRIPT "${CMAKE_CURRENT_LIST_FILE}" CACHE INTERNAL "Path to CMakeRC script")
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function(_cmrc_normalize_path var)
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set(path "${${var}}")
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file(TO_CMAKE_PATH "${path}" path)
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while(path MATCHES "//")
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string(REPLACE "//" "/" path "${path}")
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endwhile()
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string(REGEX REPLACE "/+$" "" path "${path}")
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set("${var}" "${path}" PARENT_SCOPE)
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endfunction()
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get_filename_component(_inc_dir "${CMAKE_BINARY_DIR}/_cmrc/include" ABSOLUTE)
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set(CMRC_INCLUDE_DIR "${_inc_dir}" CACHE INTERNAL "Directory for CMakeRC include files")
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# Let's generate the primary include file
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file(MAKE_DIRECTORY "${CMRC_INCLUDE_DIR}/cmrc")
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set(hpp_content [==[
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#ifndef CMRC_CMRC_HPP_INCLUDED
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#define CMRC_CMRC_HPP_INCLUDED
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#include <cassert>
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#include <functional>
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#include <iterator>
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#include <list>
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#include <map>
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#include <mutex>
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#include <string>
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#include <system_error>
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#include <type_traits>
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#if !(defined(__EXCEPTIONS) || defined(__cpp_exceptions) || defined(_CPPUNWIND) || defined(CMRC_NO_EXCEPTIONS))
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#define CMRC_NO_EXCEPTIONS 1
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#endif
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namespace cmrc { namespace detail { struct dummy; } }
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#define CMRC_DECLARE(libid) \
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namespace cmrc { namespace detail { \
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struct dummy; \
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static_assert(std::is_same<dummy, ::cmrc::detail::dummy>::value, "CMRC_DECLARE() must only appear at the global namespace"); \
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} } \
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namespace cmrc { namespace libid { \
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cmrc::embedded_filesystem get_filesystem(); \
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} } static_assert(true, "")
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namespace cmrc {
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class file {
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const char* _begin = nullptr;
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const char* _end = nullptr;
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public:
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using iterator = const char*;
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using const_iterator = iterator;
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iterator begin() const noexcept { return _begin; }
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iterator cbegin() const noexcept { return _begin; }
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iterator end() const noexcept { return _end; }
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iterator cend() const noexcept { return _end; }
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std::size_t size() const { return static_cast<std::size_t>(std::distance(begin(), end())); }
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file() = default;
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file(iterator beg, iterator end) noexcept : _begin(beg), _end(end) {}
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};
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class directory_entry;
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namespace detail {
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class directory;
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class file_data;
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class file_or_directory {
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union _data_t {
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class file_data* file_data;
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class directory* directory;
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} _data;
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bool _is_file = true;
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public:
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explicit file_or_directory(file_data& f) {
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_data.file_data = &f;
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}
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explicit file_or_directory(directory& d) {
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_data.directory = &d;
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_is_file = false;
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}
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bool is_file() const noexcept {
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return _is_file;
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}
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bool is_directory() const noexcept {
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return !is_file();
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}
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const directory& as_directory() const noexcept {
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assert(!is_file());
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return *_data.directory;
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}
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const file_data& as_file() const noexcept {
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assert(is_file());
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return *_data.file_data;
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}
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};
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class file_data {
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public:
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const char* begin_ptr;
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const char* end_ptr;
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file_data(const file_data&) = delete;
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file_data(const char* b, const char* e) : begin_ptr(b), end_ptr(e) {}
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};
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inline std::pair<std::string, std::string> split_path(const std::string& path) {
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auto first_sep = path.find("/");
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if (first_sep == path.npos) {
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return std::make_pair(path, "");
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} else {
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return std::make_pair(path.substr(0, first_sep), path.substr(first_sep + 1));
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}
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}
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struct created_subdirectory {
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class directory& directory;
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class file_or_directory& index_entry;
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};
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class directory {
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std::list<file_data> _files;
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std::list<directory> _dirs;
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std::map<std::string, file_or_directory> _index;
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using base_iterator = std::map<std::string, file_or_directory>::const_iterator;
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public:
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directory() = default;
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directory(const directory&) = delete;
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created_subdirectory add_subdir(std::string name) & {
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_dirs.emplace_back();
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auto& back = _dirs.back();
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auto& fod = _index.emplace(name, file_or_directory{back}).first->second;
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return created_subdirectory{back, fod};
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}
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file_or_directory* add_file(std::string name, const char* begin, const char* end) & {
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assert(_index.find(name) == _index.end());
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_files.emplace_back(begin, end);
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return &_index.emplace(name, file_or_directory{_files.back()}).first->second;
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}
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const file_or_directory* get(const std::string& path) const {
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auto pair = split_path(path);
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auto child = _index.find(pair.first);
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if (child == _index.end()) {
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return nullptr;
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}
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auto& entry = child->second;
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if (pair.second.empty()) {
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// We're at the end of the path
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return &entry;
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}
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if (entry.is_file()) {
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// We can't traverse into a file. Stop.
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return nullptr;
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}
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// Keep going down
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return entry.as_directory().get(pair.second);
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}
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class iterator {
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base_iterator _base_iter;
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base_iterator _end_iter;
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public:
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using value_type = directory_entry;
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using difference_type = std::ptrdiff_t;
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using pointer = const value_type*;
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using reference = const value_type&;
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using iterator_category = std::input_iterator_tag;
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iterator() = default;
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explicit iterator(base_iterator iter, base_iterator end) : _base_iter(iter), _end_iter(end) {}
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iterator begin() const noexcept {
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return *this;
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}
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iterator end() const noexcept {
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return iterator(_end_iter, _end_iter);
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}
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inline value_type operator*() const noexcept;
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bool operator==(const iterator& rhs) const noexcept {
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return _base_iter == rhs._base_iter;
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}
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bool operator!=(const iterator& rhs) const noexcept {
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return !(*this == rhs);
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}
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iterator& operator++() noexcept {
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++_base_iter;
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return *this;
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}
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iterator operator++(int) noexcept {
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auto cp = *this;
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++_base_iter;
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return cp;
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}
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};
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using const_iterator = iterator;
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iterator begin() const noexcept {
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return iterator(_index.begin(), _index.end());
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}
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iterator end() const noexcept {
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return iterator();
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}
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};
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inline std::string normalize_path(std::string path) {
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while (path.find("/") == 0) {
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path.erase(path.begin());
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}
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while (!path.empty() && (path.rfind("/") == path.size() - 1)) {
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path.pop_back();
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}
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auto off = path.npos;
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while ((off = path.find("//")) != path.npos) {
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path.erase(path.begin() + static_cast<std::string::difference_type>(off));
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}
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return path;
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}
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using index_type = std::map<std::string, const cmrc::detail::file_or_directory*>;
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} // detail
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class directory_entry {
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std::string _fname;
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const detail::file_or_directory* _item;
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public:
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directory_entry() = delete;
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explicit directory_entry(std::string filename, const detail::file_or_directory& item)
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: _fname(filename)
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, _item(&item)
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{}
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const std::string& filename() const & {
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return _fname;
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}
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std::string filename() const && {
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return std::move(_fname);
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}
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bool is_file() const {
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return _item->is_file();
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}
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bool is_directory() const {
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return _item->is_directory();
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}
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};
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directory_entry detail::directory::iterator::operator*() const noexcept {
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assert(begin() != end());
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return directory_entry(_base_iter->first, _base_iter->second);
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}
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using directory_iterator = detail::directory::iterator;
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class embedded_filesystem {
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// Never-null:
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const cmrc::detail::index_type* _index;
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const detail::file_or_directory* _get(std::string path) const {
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path = detail::normalize_path(path);
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auto found = _index->find(path);
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if (found == _index->end()) {
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return nullptr;
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} else {
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return found->second;
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}
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}
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public:
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explicit embedded_filesystem(const detail::index_type& index)
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: _index(&index)
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{}
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file open(const std::string& path) const {
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auto entry_ptr = _get(path);
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if (!entry_ptr || !entry_ptr->is_file()) {
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#ifdef CMRC_NO_EXCEPTIONS
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fprintf(stderr, "Error no such file or directory: %s\n", path.c_str());
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abort();
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#else
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throw std::system_error(make_error_code(std::errc::no_such_file_or_directory), path);
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#endif
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}
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auto& dat = entry_ptr->as_file();
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return file{dat.begin_ptr, dat.end_ptr};
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}
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bool is_file(const std::string& path) const noexcept {
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auto entry_ptr = _get(path);
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return entry_ptr && entry_ptr->is_file();
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}
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bool is_directory(const std::string& path) const noexcept {
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auto entry_ptr = _get(path);
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return entry_ptr && entry_ptr->is_directory();
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}
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bool exists(const std::string& path) const noexcept {
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return !!_get(path);
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}
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directory_iterator iterate_directory(const std::string& path) const {
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auto entry_ptr = _get(path);
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if (!entry_ptr) {
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#ifdef CMRC_NO_EXCEPTIONS
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fprintf(stderr, "Error no such file or directory: %s\n", path.c_str());
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abort();
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#else
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throw std::system_error(make_error_code(std::errc::no_such_file_or_directory), path);
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#endif
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}
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if (!entry_ptr->is_directory()) {
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#ifdef CMRC_NO_EXCEPTIONS
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fprintf(stderr, "Error not a directory: %s\n", path.c_str());
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abort();
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#else
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throw std::system_error(make_error_code(std::errc::not_a_directory), path);
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#endif
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}
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return entry_ptr->as_directory().begin();
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}
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};
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}
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#endif // CMRC_CMRC_HPP_INCLUDED
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]==])
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set(cmrc_hpp "${CMRC_INCLUDE_DIR}/cmrc/cmrc.hpp" CACHE INTERNAL "")
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set(_generate 1)
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if(EXISTS "${cmrc_hpp}")
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file(READ "${cmrc_hpp}" _current)
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if(_current STREQUAL hpp_content)
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set(_generate 0)
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endif()
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endif()
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file(GENERATE OUTPUT "${cmrc_hpp}" CONTENT "${hpp_content}" CONDITION ${_generate})
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add_library(cmrc-base INTERFACE)
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target_include_directories(cmrc-base INTERFACE $<BUILD_INTERFACE:${CMRC_INCLUDE_DIR}>)
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# Signal a basic C++11 feature to require C++11.
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target_compile_features(cmrc-base INTERFACE cxx_nullptr)
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set_property(TARGET cmrc-base PROPERTY INTERFACE_CXX_EXTENSIONS OFF)
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add_library(cmrc::base ALIAS cmrc-base)
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function(cmrc_add_resource_library name)
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set(args ALIAS NAMESPACE TYPE)
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cmake_parse_arguments(ARG "" "${args}" "" "${ARGN}")
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# Generate the identifier for the resource library's namespace
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set(ns_re "[a-zA-Z_][a-zA-Z0-9_]*")
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if(NOT DEFINED ARG_NAMESPACE)
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# Check that the library name is also a valid namespace
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if(NOT name MATCHES "${ns_re}")
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message(SEND_ERROR "Library name is not a valid namespace. Specify the NAMESPACE argument")
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endif()
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set(ARG_NAMESPACE "${name}")
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else()
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if(NOT ARG_NAMESPACE MATCHES "${ns_re}")
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message(SEND_ERROR "NAMESPACE for ${name} is not a valid C++ namespace identifier (${ARG_NAMESPACE})")
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endif()
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endif()
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set(libname "${name}")
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# Check that type is either "STATIC" or "OBJECT", or default to "STATIC" if
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# not set
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if(NOT DEFINED ARG_TYPE)
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set(ARG_TYPE STATIC)
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elseif(NOT "${ARG_TYPE}" MATCHES "^(STATIC|OBJECT)$")
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message(SEND_ERROR "${ARG_TYPE} is not a valid TYPE (STATIC and OBJECT are acceptable)")
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set(ARG_TYPE STATIC)
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endif()
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# Generate a library with the compiled in character arrays.
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string(CONFIGURE [=[
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#include <cmrc/cmrc.hpp>
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#include <map>
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#include <utility>
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namespace cmrc {
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namespace @ARG_NAMESPACE@ {
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namespace res_chars {
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// These are the files which are available in this resource library
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$<JOIN:$<TARGET_PROPERTY:@libname@,CMRC_EXTERN_DECLS>,
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>
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}
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namespace {
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const cmrc::detail::index_type&
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get_root_index() {
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static cmrc::detail::directory root_directory_;
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static cmrc::detail::file_or_directory root_directory_fod{root_directory_};
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static cmrc::detail::index_type root_index;
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root_index.emplace("", &root_directory_fod);
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struct dir_inl {
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class cmrc::detail::directory& directory;
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};
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dir_inl root_directory_dir{root_directory_};
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(void)root_directory_dir;
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$<JOIN:$<TARGET_PROPERTY:@libname@,CMRC_MAKE_DIRS>,
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>
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$<JOIN:$<TARGET_PROPERTY:@libname@,CMRC_MAKE_FILES>,
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>
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return root_index;
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}
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}
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cmrc::embedded_filesystem get_filesystem() {
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static auto& index = get_root_index();
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return cmrc::embedded_filesystem{index};
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}
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} // @ARG_NAMESPACE@
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} // cmrc
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]=] cpp_content @ONLY)
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get_filename_component(libdir "${CMAKE_CURRENT_BINARY_DIR}/__cmrc_${name}" ABSOLUTE)
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get_filename_component(lib_tmp_cpp "${libdir}/lib_.cpp" ABSOLUTE)
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string(REPLACE "\n " "\n" cpp_content "${cpp_content}")
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file(GENERATE OUTPUT "${lib_tmp_cpp}" CONTENT "${cpp_content}")
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get_filename_component(libcpp "${libdir}/lib.cpp" ABSOLUTE)
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add_custom_command(OUTPUT "${libcpp}"
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DEPENDS "${lib_tmp_cpp}" "${cmrc_hpp}"
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COMMAND ${CMAKE_COMMAND} -E copy_if_different "${lib_tmp_cpp}" "${libcpp}"
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COMMENT "Generating ${name} resource loader"
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)
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# Generate the actual static library. Each source file is just a single file
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# with a character array compiled in containing the contents of the
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# corresponding resource file.
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add_library(${name} ${ARG_TYPE} ${libcpp})
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set_property(TARGET ${name} PROPERTY CMRC_LIBDIR "${libdir}")
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set_property(TARGET ${name} PROPERTY CMRC_NAMESPACE "${ARG_NAMESPACE}")
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target_link_libraries(${name} PUBLIC cmrc::base)
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set_property(TARGET ${name} PROPERTY CMRC_IS_RESOURCE_LIBRARY TRUE)
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if(ARG_ALIAS)
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add_library("${ARG_ALIAS}" ALIAS ${name})
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endif()
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cmrc_add_resources(${name} ${ARG_UNPARSED_ARGUMENTS})
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endfunction()
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function(_cmrc_register_dirs name dirpath)
|
|
if(dirpath STREQUAL "")
|
|
return()
|
|
endif()
|
|
# Skip this dir if we have already registered it
|
|
get_target_property(registered "${name}" _CMRC_REGISTERED_DIRS)
|
|
if(dirpath IN_LIST registered)
|
|
return()
|
|
endif()
|
|
# Register the parent directory first
|
|
get_filename_component(parent "${dirpath}" DIRECTORY)
|
|
if(NOT parent STREQUAL "")
|
|
_cmrc_register_dirs("${name}" "${parent}")
|
|
endif()
|
|
# Now generate the registration
|
|
set_property(TARGET "${name}" APPEND PROPERTY _CMRC_REGISTERED_DIRS "${dirpath}")
|
|
_cm_encode_fpath(sym "${dirpath}")
|
|
if(parent STREQUAL "")
|
|
set(parent_sym root_directory)
|
|
else()
|
|
_cm_encode_fpath(parent_sym "${parent}")
|
|
endif()
|
|
get_filename_component(leaf "${dirpath}" NAME)
|
|
set_property(
|
|
TARGET "${name}"
|
|
APPEND PROPERTY CMRC_MAKE_DIRS
|
|
"static auto ${sym}_dir = ${parent_sym}_dir.directory.add_subdir(\"${leaf}\")\;"
|
|
"root_index.emplace(\"${dirpath}\", &${sym}_dir.index_entry)\;"
|
|
)
|
|
endfunction()
|
|
|
|
function(cmrc_add_resources name)
|
|
get_target_property(is_reslib ${name} CMRC_IS_RESOURCE_LIBRARY)
|
|
if(NOT TARGET ${name} OR NOT is_reslib)
|
|
message(SEND_ERROR "cmrc_add_resources called on target '${name}' which is not an existing resource library")
|
|
return()
|
|
endif()
|
|
|
|
set(options)
|
|
set(args WHENCE PREFIX)
|
|
set(list_args)
|
|
cmake_parse_arguments(ARG "${options}" "${args}" "${list_args}" "${ARGN}")
|
|
|
|
if(NOT ARG_WHENCE)
|
|
set(ARG_WHENCE ${CMAKE_CURRENT_SOURCE_DIR})
|
|
endif()
|
|
_cmrc_normalize_path(ARG_WHENCE)
|
|
get_filename_component(ARG_WHENCE "${ARG_WHENCE}" ABSOLUTE)
|
|
|
|
# Generate the identifier for the resource library's namespace
|
|
get_target_property(lib_ns "${name}" CMRC_NAMESPACE)
|
|
|
|
get_target_property(libdir ${name} CMRC_LIBDIR)
|
|
get_target_property(target_dir ${name} SOURCE_DIR)
|
|
file(RELATIVE_PATH reldir "${target_dir}" "${CMAKE_CURRENT_SOURCE_DIR}")
|
|
if(reldir MATCHES "^\\.\\.")
|
|
message(SEND_ERROR "Cannot call cmrc_add_resources in a parent directory from the resource library target")
|
|
return()
|
|
endif()
|
|
|
|
foreach(input IN LISTS ARG_UNPARSED_ARGUMENTS)
|
|
_cmrc_normalize_path(input)
|
|
get_filename_component(abs_in "${input}" ABSOLUTE)
|
|
# Generate a filename based on the input filename that we can put in
|
|
# the intermediate directory.
|
|
file(RELATIVE_PATH relpath "${ARG_WHENCE}" "${abs_in}")
|
|
if(relpath MATCHES "^\\.\\.")
|
|
# For now we just error on files that exist outside of the soure dir.
|
|
message(SEND_ERROR "Cannot add file '${input}': File must be in a subdirectory of ${ARG_WHENCE}")
|
|
continue()
|
|
endif()
|
|
if(DEFINED ARG_PREFIX)
|
|
_cmrc_normalize_path(ARG_PREFIX)
|
|
endif()
|
|
if(ARG_PREFIX AND NOT ARG_PREFIX MATCHES "/$")
|
|
set(ARG_PREFIX "${ARG_PREFIX}/")
|
|
endif()
|
|
get_filename_component(dirpath "${ARG_PREFIX}${relpath}" DIRECTORY)
|
|
_cmrc_register_dirs("${name}" "${dirpath}")
|
|
get_filename_component(abs_out "${libdir}/intermediate/${ARG_PREFIX}${relpath}.cpp" ABSOLUTE)
|
|
# Generate a symbol name relpath the file's character array
|
|
_cm_encode_fpath(sym "${relpath}")
|
|
# Get the symbol name for the parent directory
|
|
if(dirpath STREQUAL "")
|
|
set(parent_sym root_directory)
|
|
else()
|
|
_cm_encode_fpath(parent_sym "${dirpath}")
|
|
endif()
|
|
# Generate the rule for the intermediate source file
|
|
_cmrc_generate_intermediate_cpp(${lib_ns} ${sym} "${abs_out}" "${abs_in}")
|
|
target_sources(${name} PRIVATE "${abs_out}")
|
|
set_property(TARGET ${name} APPEND PROPERTY CMRC_EXTERN_DECLS
|
|
"// Pointers to ${input}"
|
|
"extern const char* const ${sym}_begin\;"
|
|
"extern const char* const ${sym}_end\;"
|
|
)
|
|
get_filename_component(leaf "${relpath}" NAME)
|
|
set_property(
|
|
TARGET ${name}
|
|
APPEND PROPERTY CMRC_MAKE_FILES
|
|
"root_index.emplace("
|
|
" \"${ARG_PREFIX}${relpath}\","
|
|
" ${parent_sym}_dir.directory.add_file("
|
|
" \"${leaf}\","
|
|
" res_chars::${sym}_begin,"
|
|
" res_chars::${sym}_end"
|
|
" )"
|
|
")\;"
|
|
)
|
|
endforeach()
|
|
endfunction()
|
|
|
|
function(_cmrc_generate_intermediate_cpp lib_ns symbol outfile infile)
|
|
add_custom_command(
|
|
# This is the file we will generate
|
|
OUTPUT "${outfile}"
|
|
# These are the primary files that affect the output
|
|
DEPENDS "${infile}" "${_CMRC_SCRIPT}"
|
|
COMMAND
|
|
"${CMAKE_COMMAND}"
|
|
-D_CMRC_GENERATE_MODE=TRUE
|
|
-DNAMESPACE=${lib_ns}
|
|
-DSYMBOL=${symbol}
|
|
"-DINPUT_FILE=${infile}"
|
|
"-DOUTPUT_FILE=${outfile}"
|
|
-P "${_CMRC_SCRIPT}"
|
|
COMMENT "Generating intermediate file for ${infile}"
|
|
)
|
|
endfunction()
|
|
|
|
function(_cm_encode_fpath var fpath)
|
|
string(MAKE_C_IDENTIFIER "${fpath}" ident)
|
|
string(MD5 hash "${fpath}")
|
|
string(SUBSTRING "${hash}" 0 4 hash)
|
|
set(${var} f_${hash}_${ident} PARENT_SCOPE)
|
|
endfunction()
|