diff --git a/external/rlottie/example/evasapp.cpp b/external/rlottie/example/evasapp.cpp index 61725afa1..5f42884d4 100644 --- a/external/rlottie/example/evasapp.cpp +++ b/external/rlottie/example/evasapp.cpp @@ -121,10 +121,10 @@ void EvasApp::run() ecore_evas_shutdown(); } -static bool isJsonFile(const char *filename) { +static bool isLottiefile(const char *filename) { const char *dot = strrchr(filename, '.'); if(!dot || dot == filename) return false; - return !strcmp(dot + 1, "json"); + return !strcmp(dot + 1, "json") || !strcmp(dot + 1, "lottie"); } std::vector @@ -136,7 +136,7 @@ EvasApp::jsonFiles(const std::string &dirName, bool /*recurse*/) d = opendir(dirName.c_str()); if (d) { while ((dir = readdir(d)) != NULL) { - if (isJsonFile(dir->d_name)) + if (isLottiefile(dir->d_name)) result.push_back(dirName + dir->d_name); } closedir(d); diff --git a/external/rlottie/example/resource/1st_animation.lottie b/external/rlottie/example/resource/1st_animation.lottie new file mode 100644 index 000000000..9a4916491 Binary files /dev/null and b/external/rlottie/example/resource/1st_animation.lottie differ diff --git a/external/rlottie/src/lottie/CMakeLists.txt b/external/rlottie/src/lottie/CMakeLists.txt index 09840b9b3..a5895b0a8 100644 --- a/external/rlottie/src/lottie/CMakeLists.txt +++ b/external/rlottie/src/lottie/CMakeLists.txt @@ -1,3 +1,4 @@ +add_subdirectory(zip) target_sources(rlottie PRIVATE diff --git a/external/rlottie/src/lottie/lottieitem.cpp b/external/rlottie/src/lottie/lottieitem.cpp index 4cd22e4c5..90108ec92 100644 --- a/external/rlottie/src/lottie/lottieitem.cpp +++ b/external/rlottie/src/lottie/lottieitem.cpp @@ -836,7 +836,7 @@ renderer::ShapeLayer::ShapeLayer(model::Layer *layerData, void renderer::ShapeLayer::updateContent() { - mRoot->update(frameNo(), combinedMatrix(), combinedAlpha(), flag()); + mRoot->update(frameNo(), combinedMatrix(), 1.0f , flag()); if (mLayerData->hasPathOperator()) { mRoot->applyTrim(); @@ -863,6 +863,27 @@ renderer::DrawableList renderer::ShapeLayer::renderList() return {mDrawableList.data(), mDrawableList.size()}; } +void renderer::ShapeLayer::render(VPainter *painter, const VRle &inheritMask, + const VRle &matteRle, SurfaceCache &cache) +{ + if (vIsZero(combinedAlpha())) return; + + if (vCompare(combinedAlpha(), 1.0)) { + Layer::render(painter, inheritMask, matteRle, cache); + } else { + //do offscreen rendering + VSize size = painter->clipBoundingRect().size(); + VPainter srcPainter; + VBitmap srcBitmap = cache.make_surface(size.width(), size.height()); + srcPainter.begin(&srcBitmap); + Layer::render(&srcPainter, inheritMask, matteRle, cache); + srcPainter.end(); + painter->drawBitmap(VPoint(), srcBitmap, + uint8_t(combinedAlpha() * 255.0f)); + cache.release_surface(srcBitmap); + } +} + bool renderer::Group::resolveKeyPath(LOTKeyPath &keyPath, uint32_t depth, LOTVariant &value) { @@ -1284,9 +1305,9 @@ renderer::Stroke::Stroke(model::Stroke *data) static vthread_local std::vector Dash_Vector; bool renderer::Stroke::updateContent(int frameNo, const VMatrix &matrix, - float alpha) + float) { - auto combinedAlpha = alpha * mModel.opacity(frameNo); + auto combinedAlpha = mModel.opacity(frameNo); auto color = mModel.color(frameNo).toColor(combinedAlpha); VBrush brush(color); diff --git a/external/rlottie/src/lottie/lottieitem.h b/external/rlottie/src/lottie/lottieitem.h index 001ce667c..b0708976b 100644 --- a/external/rlottie/src/lottie/lottieitem.h +++ b/external/rlottie/src/lottie/lottieitem.h @@ -319,6 +319,8 @@ public: void buildLayerNode() final; bool resolveKeyPath(LOTKeyPath &keyPath, uint32_t depth, LOTVariant &value) override; + void render(VPainter *painter, const VRle &mask, const VRle &matteRle, + SurfaceCache &cache) final; protected: void preprocessStage(const VRect &clip) final; diff --git a/external/rlottie/src/lottie/lottieloader.cpp b/external/rlottie/src/lottie/lottieloader.cpp index 8a52949e7..0c938db97 100644 --- a/external/rlottie/src/lottie/lottieloader.cpp +++ b/external/rlottie/src/lottie/lottieloader.cpp @@ -129,13 +129,19 @@ std::shared_ptr model::loadFromFile(const std::string &path, return {}; } else { std::string content; + f.seekg(0, std::ios::end); + auto fsize = f.tellg(); + + //read the given file + content.reserve(fsize); + f.seekg(0, std::ios::beg); + content.assign((std::istreambuf_iterator(f)), std::istreambuf_iterator()); - std::getline(f, content, '\0'); f.close(); - if (content.empty()) return {}; + if (fsize == 0) return {}; - auto obj = internal::model::parse(const_cast(content.c_str()), + auto obj = internal::model::parse(const_cast(content.c_str()), fsize, dirname(path)); if (obj && cachePolicy) ModelCache::instance().add(path, obj); @@ -153,7 +159,7 @@ std::shared_ptr model::loadFromData( if (obj) return obj; } - auto obj = internal::model::parse(const_cast(jsonData.c_str()), + auto obj = internal::model::parse(const_cast(jsonData.c_str()), jsonData.size(), std::move(resourcePath)); if (obj && cachePolicy) ModelCache::instance().add(key, obj); @@ -164,6 +170,6 @@ std::shared_ptr model::loadFromData( std::shared_ptr model::loadFromData( std::string jsonData, std::string resourcePath, model::ColorFilter filter) { - return internal::model::parse(const_cast(jsonData.c_str()), + return internal::model::parse(const_cast(jsonData.c_str()), jsonData.size(), std::move(resourcePath), std::move(filter)); } diff --git a/external/rlottie/src/lottie/lottiemodel.h b/external/rlottie/src/lottie/lottiemodel.h index 745571e2c..6f256ed23 100644 --- a/external/rlottie/src/lottie/lottiemodel.h +++ b/external/rlottie/src/lottie/lottiemodel.h @@ -1137,7 +1137,7 @@ std::shared_ptr loadFromData(std::string jsonData, std::string resourcePath, ColorFilter filter); -std::shared_ptr parse(char *str, std::string dir_path, +std::shared_ptr parse(char *str, size_t length, std::string dir_path, ColorFilter filter = {}); } // namespace model diff --git a/external/rlottie/src/lottie/lottieparser.cpp b/external/rlottie/src/lottie/lottieparser.cpp index e14fd5c1c..b33effae2 100644 --- a/external/rlottie/src/lottie/lottieparser.cpp +++ b/external/rlottie/src/lottie/lottieparser.cpp @@ -57,6 +57,7 @@ #include "lottiemodel.h" #include "rapidjson/document.h" +#include "zip/zip.h" RAPIDJSON_DIAG_PUSH #ifdef __GNUC__ @@ -2365,11 +2366,54 @@ public: #endif +static char* uncompressZip(const char * str, size_t length) +{ + const char* errMsg = "Failed to unzip dotLottie!"; + + auto zip = zip_stream_open(str, length, 0, 'r'); + if (!zip) { + vCritical << errMsg; + return nullptr; + } + + //Read a representive animation + if (zip_entry_openbyindex(zip, 1)) { + vCritical << errMsg; + return nullptr; + } + + char* buf = nullptr; + size_t bufSize; + zip_entry_read(zip, (void**)&buf, &bufSize); + + zip_entry_close(zip); + zip_stream_close(zip); + + return buf; +} + +static bool checkDotLottie(const char * str) +{ + //check the .Lottie signature. + if (str[0] == 0x50 && str[1] == 0x4B && str[2] == 0x03 && str[3] == 0x04) return true; + else return false; +} + std::shared_ptr model::parse(char * str, + size_t length, std::string dir_path, model::ColorFilter filter) { - LottieParserImpl obj(str, std::move(dir_path), std::move(filter)); + auto input = str; + + auto dotLottie = checkDotLottie(str); + if (dotLottie) { + input = uncompressZip(str, length); + } + + LottieParserImpl obj(input, std::move(dir_path), std::move(filter)); + + if (dotLottie) free(input); if (obj.VerifyType()) { obj.parseComposition(); diff --git a/external/rlottie/src/lottie/meson.build b/external/rlottie/src/lottie/meson.build index fcf8239c8..8bfe69cdc 100644 --- a/external/rlottie/src/lottie/meson.build +++ b/external/rlottie/src/lottie/meson.build @@ -1,3 +1,4 @@ +subdir('zip') source_file = [ 'lottieparser.cpp', diff --git a/external/rlottie/src/lottie/zip/CMakeLists.txt b/external/rlottie/src/lottie/zip/CMakeLists.txt new file mode 100644 index 000000000..05ed8d030 --- /dev/null +++ b/external/rlottie/src/lottie/zip/CMakeLists.txt @@ -0,0 +1,9 @@ +target_sources(rlottie + PRIVATE + "${CMAKE_CURRENT_LIST_DIR}/zip.cpp" + ) + +target_include_directories(rlottie + PRIVATE + "${CMAKE_CURRENT_LIST_DIR}" + ) diff --git a/external/rlottie/src/lottie/zip/meson.build b/external/rlottie/src/lottie/zip/meson.build new file mode 100644 index 000000000..fe8657ee2 --- /dev/null +++ b/external/rlottie/src/lottie/zip/meson.build @@ -0,0 +1,9 @@ + +source_file = [ + 'zip.cpp' +] + +zip_dep = [declare_dependency( + include_directories : include_directories('.'), + sources : source_file +)] diff --git a/external/rlottie/src/lottie/zip/miniz.h b/external/rlottie/src/lottie/zip/miniz.h new file mode 100644 index 000000000..04756adee --- /dev/null +++ b/external/rlottie/src/lottie/zip/miniz.h @@ -0,0 +1,10130 @@ +#define MINIZ_EXPORT +/* miniz.c 2.2.0 - public domain deflate/inflate, zlib-subset, ZIP + reading/writing/appending, PNG writing See "unlicense" statement at the end + of this file. Rich Geldreich , last updated Oct. 13, + 2013 Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: + http://www.ietf.org/rfc/rfc1951.txt + + Most API's defined in miniz.c are optional. For example, to disable the + archive related functions just define MINIZ_NO_ARCHIVE_APIS, or to get rid of + all stdio usage define MINIZ_NO_STDIO (see the list below for more macros). + + * Low-level Deflate/Inflate implementation notes: + + Compression: Use the "tdefl" API's. The compressor supports raw, static, + and dynamic blocks, lazy or greedy parsing, match length filtering, RLE-only, + and Huffman-only streams. It performs and compresses approximately as well as + zlib. + + Decompression: Use the "tinfl" API's. The entire decompressor is + implemented as a single function coroutine: see tinfl_decompress(). It + supports decompression into a 32KB (or larger power of 2) wrapping buffer, or + into a memory block large enough to hold the entire file. + + The low-level tdefl/tinfl API's do not make any use of dynamic memory + allocation. + + * zlib-style API notes: + + miniz.c implements a fairly large subset of zlib. There's enough + functionality present for it to be a drop-in zlib replacement in many apps: + The z_stream struct, optional memory allocation callbacks + deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound + inflateInit/inflateInit2/inflate/inflateReset/inflateEnd + compress, compress2, compressBound, uncompress + CRC-32, Adler-32 - Using modern, minimal code size, CPU cache friendly + routines. Supports raw deflate streams or standard zlib streams with adler-32 + checking. + + Limitations: + The callback API's are not implemented yet. No support for gzip headers or + zlib static dictionaries. I've tried to closely emulate zlib's various + flavors of stream flushing and return status codes, but there are no + guarantees that miniz.c pulls this off perfectly. + + * PNG writing: See the tdefl_write_image_to_png_file_in_memory() function, + originally written by Alex Evans. Supports 1-4 bytes/pixel images. + + * ZIP archive API notes: + + The ZIP archive API's where designed with simplicity and efficiency in + mind, with just enough abstraction to get the job done with minimal fuss. + There are simple API's to retrieve file information, read files from existing + archives, create new archives, append new files to existing archives, or + clone archive data from one archive to another. It supports archives located + in memory or the heap, on disk (using stdio.h), or you can specify custom + file read/write callbacks. + + - Archive reading: Just call this function to read a single file from a + disk archive: + + void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const + char *pArchive_name, size_t *pSize, mz_uint zip_flags); + + For more complex cases, use the "mz_zip_reader" functions. Upon opening an + archive, the entire central directory is located and read as-is into memory, + and subsequent file access only occurs when reading individual files. + + - Archives file scanning: The simple way is to use this function to scan a + loaded archive for a specific file: + + int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, + const char *pComment, mz_uint flags); + + The locate operation can optionally check file comments too, which (as one + example) can be used to identify multiple versions of the same file in an + archive. This function uses a simple linear search through the central + directory, so it's not very fast. + + Alternately, you can iterate through all the files in an archive (using + mz_zip_reader_get_num_files()) and retrieve detailed info on each file by + calling mz_zip_reader_file_stat(). + + - Archive creation: Use the "mz_zip_writer" functions. The ZIP writer + immediately writes compressed file data to disk and builds an exact image of + the central directory in memory. The central directory image is written all + at once at the end of the archive file when the archive is finalized. + + The archive writer can optionally align each file's local header and file + data to any power of 2 alignment, which can be useful when the archive will + be read from optical media. Also, the writer supports placing arbitrary data + blobs at the very beginning of ZIP archives. Archives written using either + feature are still readable by any ZIP tool. + + - Archive appending: The simple way to add a single file to an archive is + to call this function: + + mz_bool mz_zip_add_mem_to_archive_file_in_place(const char *pZip_filename, + const char *pArchive_name, const void *pBuf, size_t buf_size, const void + *pComment, mz_uint16 comment_size, mz_uint level_and_flags); + + The archive will be created if it doesn't already exist, otherwise it'll be + appended to. Note the appending is done in-place and is not an atomic + operation, so if something goes wrong during the operation it's possible the + archive could be left without a central directory (although the local file + headers and file data will be fine, so the archive will be recoverable). + + For more complex archive modification scenarios: + 1. The safest way is to use a mz_zip_reader to read the existing archive, + cloning only those bits you want to preserve into a new archive using using + the mz_zip_writer_add_from_zip_reader() function (which compiles the + compressed file data as-is). When you're done, delete the old archive and + rename the newly written archive, and you're done. This is safe but requires + a bunch of temporary disk space or heap memory. + + 2. Or, you can convert an mz_zip_reader in-place to an mz_zip_writer using + mz_zip_writer_init_from_reader(), append new files as needed, then finalize + the archive which will write an updated central directory to the original + archive. (This is basically what mz_zip_add_mem_to_archive_file_in_place() + does.) There's a possibility that the archive's central directory could be + lost with this method if anything goes wrong, though. + + - ZIP archive support limitations: + No spanning support. Extraction functions can only handle unencrypted, + stored or deflated files. Requires streams capable of seeking. + + * This is a header file library, like stb_image.c. To get only a header file, + either cut and paste the below header, or create miniz.h, #define + MINIZ_HEADER_FILE_ONLY, and then include miniz.c from it. + + * Important: For best perf. be sure to customize the below macros for your + target platform: #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 #define + MINIZ_LITTLE_ENDIAN 1 #define MINIZ_HAS_64BIT_REGISTERS 1 + + * On platforms using glibc, Be sure to "#define _LARGEFILE64_SOURCE 1" before + including miniz.c to ensure miniz uses the 64-bit variants: fopen64(), + stat64(), etc. Otherwise you won't be able to process large files (i.e. + 32-bit stat() fails for me on files > 0x7FFFFFFF bytes). +*/ +#pragma once + +/* Defines to completely disable specific portions of miniz.c: + If all macros here are defined the only functionality remaining will be + CRC-32, adler-32, tinfl, and tdefl. */ + +/* Define MINIZ_NO_STDIO to disable all usage and any functions which rely on + * stdio for file I/O. */ +/*#define MINIZ_NO_STDIO */ + +/* If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able + * to get the current time, or */ +/* get/set file times, and the C run-time funcs that get/set times won't be + * called. */ +/* The current downside is the times written to your archives will be from 1979. + */ +/*#define MINIZ_NO_TIME */ + +/* Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. */ +/*#define MINIZ_NO_ARCHIVE_APIS */ + +/* Define MINIZ_NO_ARCHIVE_WRITING_APIS to disable all writing related ZIP + * archive API's. */ +/*#define MINIZ_NO_ARCHIVE_WRITING_APIS */ + +/* Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression + * API's. */ +/*#define MINIZ_NO_ZLIB_APIS */ + +/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent + * conflicts against stock zlib. */ +/*#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES */ + +/* Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc. + Note if MINIZ_NO_MALLOC is defined then the user must always provide custom + user alloc/free/realloc callbacks to the zlib and archive API's, and a few + stand-alone helper API's which don't provide custom user functions (such as + tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. + */ +/*#define MINIZ_NO_MALLOC */ + +#if defined(__TINYC__) && (defined(__linux) || defined(__linux__)) +/* TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc + * on Linux */ +#define MINIZ_NO_TIME +#endif + +#include + +#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS) +#include +#endif + +#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || \ + defined(__i386) || defined(__i486__) || defined(__i486) || \ + defined(i386) || defined(__ia64__) || defined(__x86_64__) +/* MINIZ_X86_OR_X64_CPU is only used to help set the below macros. */ +#define MINIZ_X86_OR_X64_CPU 1 +#else +#define MINIZ_X86_OR_X64_CPU 0 +#endif + +#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU +/* Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. */ +#define MINIZ_LITTLE_ENDIAN 1 +#else +#define MINIZ_LITTLE_ENDIAN 0 +#endif + +/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES only if not set */ +#if !defined(MINIZ_USE_UNALIGNED_LOADS_AND_STORES) +#if MINIZ_X86_OR_X64_CPU +/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient + * integer loads and stores from unaligned addresses. */ +#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 +#define MINIZ_UNALIGNED_USE_MEMCPY +#else +#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 +#endif +#endif + +#if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || \ + defined(_LP64) || defined(__LP64__) || defined(__ia64__) || \ + defined(__x86_64__) +/* Set MINIZ_HAS_64BIT_REGISTERS to 1 if operations on 64-bit integers are + * reasonably fast (and don't involve compiler generated calls to helper + * functions). */ +#define MINIZ_HAS_64BIT_REGISTERS 1 +#else +#define MINIZ_HAS_64BIT_REGISTERS 0 +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- zlib-style API Definitions. */ + +/* For more compatibility with zlib, miniz.c uses unsigned long for some + * parameters/struct members. Beware: mz_ulong can be either 32 or 64-bits! */ +typedef unsigned long mz_ulong; + +/* mz_free() internally uses the MZ_FREE() macro (which by default calls free() + * unless you've modified the MZ_MALLOC macro) to release a block allocated from + * the heap. */ +MINIZ_EXPORT void mz_free(void *p); + +#define MZ_ADLER32_INIT (1) +/* mz_adler32() returns the initial adler-32 value to use when called with + * ptr==NULL. */ +MINIZ_EXPORT mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, + size_t buf_len); + +#define MZ_CRC32_INIT (0) +/* mz_crc32() returns the initial CRC-32 value to use when called with + * ptr==NULL. */ +MINIZ_EXPORT mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, + size_t buf_len); + +/* Compression strategies. */ +enum { + MZ_DEFAULT_STRATEGY = 0, + MZ_FILTERED = 1, + MZ_HUFFMAN_ONLY = 2, + MZ_RLE = 3, + MZ_FIXED = 4 +}; + +/* Method */ +#define MZ_DEFLATED 8 + +/* Heap allocation callbacks. +Note that mz_alloc_func parameter types purposely differ from zlib's: items/size +is size_t, not unsigned long. */ +typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size); +typedef void (*mz_free_func)(void *opaque, void *address); +typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, + size_t size); + +/* Compression levels: 0-9 are the standard zlib-style levels, 10 is best + * possible compression (not zlib compatible, and may be very slow), + * MZ_DEFAULT_COMPRESSION=MZ_DEFAULT_LEVEL. */ +enum { + MZ_NO_COMPRESSION = 0, + MZ_BEST_SPEED = 1, + MZ_BEST_COMPRESSION = 9, + MZ_UBER_COMPRESSION = 10, + MZ_DEFAULT_LEVEL = 6, + MZ_DEFAULT_COMPRESSION = -1 +}; + +#define MZ_VERSION "10.2.0" +#define MZ_VERNUM 0xA100 +#define MZ_VER_MAJOR 10 +#define MZ_VER_MINOR 2 +#define MZ_VER_REVISION 0 +#define MZ_VER_SUBREVISION 0 + +#ifndef MINIZ_NO_ZLIB_APIS + +/* Flush values. For typical usage you only need MZ_NO_FLUSH and MZ_FINISH. The + * other values are for advanced use (refer to the zlib docs). */ +enum { + MZ_NO_FLUSH = 0, + MZ_PARTIAL_FLUSH = 1, + MZ_SYNC_FLUSH = 2, + MZ_FULL_FLUSH = 3, + MZ_FINISH = 4, + MZ_BLOCK = 5 +}; + +/* Return status codes. MZ_PARAM_ERROR is non-standard. */ +enum { + MZ_OK = 0, + MZ_STREAM_END = 1, + MZ_NEED_DICT = 2, + MZ_ERRNO = -1, + MZ_STREAM_ERROR = -2, + MZ_DATA_ERROR = -3, + MZ_MEM_ERROR = -4, + MZ_BUF_ERROR = -5, + MZ_VERSION_ERROR = -6, + MZ_PARAM_ERROR = -10000 +}; + +/* Window bits */ +#define MZ_DEFAULT_WINDOW_BITS 15 + +struct mz_internal_state; + +/* Compression/decompression stream struct. */ +typedef struct mz_stream_s { + const unsigned char *next_in; /* pointer to next byte to read */ + unsigned int avail_in; /* number of bytes available at next_in */ + mz_ulong total_in; /* total number of bytes consumed so far */ + + unsigned char *next_out; /* pointer to next byte to write */ + unsigned int avail_out; /* number of bytes that can be written to next_out */ + mz_ulong total_out; /* total number of bytes produced so far */ + + char *msg; /* error msg (unused) */ + struct mz_internal_state + *state; /* internal state, allocated by zalloc/zfree */ + + mz_alloc_func + zalloc; /* optional heap allocation function (defaults to malloc) */ + mz_free_func zfree; /* optional heap free function (defaults to free) */ + void *opaque; /* heap alloc function user pointer */ + + int data_type; /* data_type (unused) */ + mz_ulong adler; /* adler32 of the source or uncompressed data */ + mz_ulong reserved; /* not used */ +} mz_stream; + +typedef mz_stream *mz_streamp; + +/* Returns the version string of miniz.c. */ +MINIZ_EXPORT const char *mz_version(void); + +/* mz_deflateInit() initializes a compressor with default options: */ +/* Parameters: */ +/* pStream must point to an initialized mz_stream struct. */ +/* level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. */ +/* level 1 enables a specially optimized compression function that's been + * optimized purely for performance, not ratio. */ +/* (This special func. is currently only enabled when + * MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) */ +/* Return values: */ +/* MZ_OK on success. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +/* MZ_PARAM_ERROR if the input parameters are bogus. */ +/* MZ_MEM_ERROR on out of memory. */ +MINIZ_EXPORT int mz_deflateInit(mz_streamp pStream, int level); + +/* mz_deflateInit2() is like mz_deflate(), except with more control: */ +/* Additional parameters: */ +/* method must be MZ_DEFLATED */ +/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to wrap the deflate stream with + * zlib header/adler-32 footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate/no + * header or footer) */ +/* mem_level must be between [1, 9] (it's checked but ignored by miniz.c) */ +MINIZ_EXPORT int mz_deflateInit2(mz_streamp pStream, int level, int method, + int window_bits, int mem_level, int strategy); + +/* Quickly resets a compressor without having to reallocate anything. Same as + * calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). */ +MINIZ_EXPORT int mz_deflateReset(mz_streamp pStream); + +/* mz_deflate() compresses the input to output, consuming as much of the input + * and producing as much output as possible. */ +/* Parameters: */ +/* pStream is the stream to read from and write to. You must initialize/update + * the next_in, avail_in, next_out, and avail_out members. */ +/* flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or + * MZ_FINISH. */ +/* Return values: */ +/* MZ_OK on success (when flushing, or if more input is needed but not + * available, and/or there's more output to be written but the output buffer is + * full). */ +/* MZ_STREAM_END if all input has been consumed and all output bytes have been + * written. Don't call mz_deflate() on the stream anymore. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +/* MZ_PARAM_ERROR if one of the parameters is invalid. */ +/* MZ_BUF_ERROR if no forward progress is possible because the input and/or + * output buffers are empty. (Fill up the input buffer or free up some output + * space and try again.) */ +MINIZ_EXPORT int mz_deflate(mz_streamp pStream, int flush); + +/* mz_deflateEnd() deinitializes a compressor: */ +/* Return values: */ +/* MZ_OK on success. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +MINIZ_EXPORT int mz_deflateEnd(mz_streamp pStream); + +/* mz_deflateBound() returns a (very) conservative upper bound on the amount of + * data that could be generated by deflate(), assuming flush is set to only + * MZ_NO_FLUSH or MZ_FINISH. */ +MINIZ_EXPORT mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len); + +/* Single-call compression functions mz_compress() and mz_compress2(): */ +/* Returns MZ_OK on success, or one of the error codes from mz_deflate() on + * failure. */ +MINIZ_EXPORT int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len); +MINIZ_EXPORT int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len, + int level); + +/* mz_compressBound() returns a (very) conservative upper bound on the amount of + * data that could be generated by calling mz_compress(). */ +MINIZ_EXPORT mz_ulong mz_compressBound(mz_ulong source_len); + +/* Initializes a decompressor. */ +MINIZ_EXPORT int mz_inflateInit(mz_streamp pStream); + +/* mz_inflateInit2() is like mz_inflateInit() with an additional option that + * controls the window size and whether or not the stream has been wrapped with + * a zlib header/footer: */ +/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or + * -MZ_DEFAULT_WINDOW_BITS (raw deflate). */ +MINIZ_EXPORT int mz_inflateInit2(mz_streamp pStream, int window_bits); + +/* Quickly resets a compressor without having to reallocate anything. Same as + * calling mz_inflateEnd() followed by mz_inflateInit()/mz_inflateInit2(). */ +MINIZ_EXPORT int mz_inflateReset(mz_streamp pStream); + +/* Decompresses the input stream to the output, consuming only as much of the + * input as needed, and writing as much to the output as possible. */ +/* Parameters: */ +/* pStream is the stream to read from and write to. You must initialize/update + * the next_in, avail_in, next_out, and avail_out members. */ +/* flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. */ +/* On the first call, if flush is MZ_FINISH it's assumed the input and output + * buffers are both sized large enough to decompress the entire stream in a + * single call (this is slightly faster). */ +/* MZ_FINISH implies that there are no more source bytes available beside + * what's already in the input buffer, and that the output buffer is large + * enough to hold the rest of the decompressed data. */ +/* Return values: */ +/* MZ_OK on success. Either more input is needed but not available, and/or + * there's more output to be written but the output buffer is full. */ +/* MZ_STREAM_END if all needed input has been consumed and all output bytes + * have been written. For zlib streams, the adler-32 of the decompressed data + * has also been verified. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +/* MZ_DATA_ERROR if the deflate stream is invalid. */ +/* MZ_PARAM_ERROR if one of the parameters is invalid. */ +/* MZ_BUF_ERROR if no forward progress is possible because the input buffer is + * empty but the inflater needs more input to continue, or if the output buffer + * is not large enough. Call mz_inflate() again */ +/* with more input data, or with more room in the output buffer (except when + * using single call decompression, described above). */ +MINIZ_EXPORT int mz_inflate(mz_streamp pStream, int flush); + +/* Deinitializes a decompressor. */ +MINIZ_EXPORT int mz_inflateEnd(mz_streamp pStream); + +/* Single-call decompression. */ +/* Returns MZ_OK on success, or one of the error codes from mz_inflate() on + * failure. */ +MINIZ_EXPORT int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, + mz_ulong source_len); +MINIZ_EXPORT int mz_uncompress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, + mz_ulong *pSource_len); + +/* Returns a string description of the specified error code, or NULL if the + * error code is invalid. */ +MINIZ_EXPORT const char *mz_error(int err); + +/* Redefine zlib-compatible names to miniz equivalents, so miniz.c can be used + * as a drop-in replacement for the subset of zlib that miniz.c supports. */ +/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you + * use zlib in the same project. */ +#ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES +typedef unsigned char Byte; +typedef unsigned int uInt; +typedef mz_ulong uLong; +typedef Byte Bytef; +typedef uInt uIntf; +typedef char charf; +typedef int intf; +typedef void *voidpf; +typedef uLong uLongf; +typedef void *voidp; +typedef void *const voidpc; +#define Z_NULL 0 +#define Z_NO_FLUSH MZ_NO_FLUSH +#define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH +#define Z_SYNC_FLUSH MZ_SYNC_FLUSH +#define Z_FULL_FLUSH MZ_FULL_FLUSH +#define Z_FINISH MZ_FINISH +#define Z_BLOCK MZ_BLOCK +#define Z_OK MZ_OK +#define Z_STREAM_END MZ_STREAM_END +#define Z_NEED_DICT MZ_NEED_DICT +#define Z_ERRNO MZ_ERRNO +#define Z_STREAM_ERROR MZ_STREAM_ERROR +#define Z_DATA_ERROR MZ_DATA_ERROR +#define Z_MEM_ERROR MZ_MEM_ERROR +#define Z_BUF_ERROR MZ_BUF_ERROR +#define Z_VERSION_ERROR MZ_VERSION_ERROR +#define Z_PARAM_ERROR MZ_PARAM_ERROR +#define Z_NO_COMPRESSION MZ_NO_COMPRESSION +#define Z_BEST_SPEED MZ_BEST_SPEED +#define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION +#define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION +#define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY +#define Z_FILTERED MZ_FILTERED +#define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY +#define Z_RLE MZ_RLE +#define Z_FIXED MZ_FIXED +#define Z_DEFLATED MZ_DEFLATED +#define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS +#define alloc_func mz_alloc_func +#define free_func mz_free_func +#define internal_state mz_internal_state +#define z_stream mz_stream +#define deflateInit mz_deflateInit +#define deflateInit2 mz_deflateInit2 +#define deflateReset mz_deflateReset +#define deflate mz_deflate +#define deflateEnd mz_deflateEnd +#define deflateBound mz_deflateBound +#define compress mz_compress +#define compress2 mz_compress2 +#define compressBound mz_compressBound +#define inflateInit mz_inflateInit +#define inflateInit2 mz_inflateInit2 +#define inflateReset mz_inflateReset +#define inflate mz_inflate +#define inflateEnd mz_inflateEnd +#define uncompress mz_uncompress +#define uncompress2 mz_uncompress2 +#define crc32 mz_crc32 +#define adler32 mz_adler32 +#define MAX_WBITS 15 +#define MAX_MEM_LEVEL 9 +#define zError mz_error +#define ZLIB_VERSION MZ_VERSION +#define ZLIB_VERNUM MZ_VERNUM +#define ZLIB_VER_MAJOR MZ_VER_MAJOR +#define ZLIB_VER_MINOR MZ_VER_MINOR +#define ZLIB_VER_REVISION MZ_VER_REVISION +#define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION +#define zlibVersion mz_version +#define zlib_version mz_version() +#endif /* #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES */ + +#endif /* MINIZ_NO_ZLIB_APIS */ + +#ifdef __cplusplus +} +#endif + +#pragma once +#include +#include +#include +#include + +/* ------------------- Types and macros */ +typedef unsigned char mz_uint8; +typedef signed short mz_int16; +typedef unsigned short mz_uint16; +typedef unsigned int mz_uint32; +typedef unsigned int mz_uint; +typedef int64_t mz_int64; +typedef uint64_t mz_uint64; +typedef int mz_bool; + +#define MZ_FALSE (0) +#define MZ_TRUE (1) + +/* Works around MSVC's spammy "warning C4127: conditional expression is + * constant" message. */ +#ifdef _MSC_VER +#define MZ_MACRO_END while (0, 0) +#else +#define MZ_MACRO_END while (0) +#endif + +#ifdef MINIZ_NO_STDIO +#define MZ_FILE void * +#else +#include +#define MZ_FILE FILE +#endif /* #ifdef MINIZ_NO_STDIO */ + +#ifdef MINIZ_NO_TIME +typedef struct mz_dummy_time_t_tag { + int m_dummy; +} mz_dummy_time_t; +#define MZ_TIME_T mz_dummy_time_t +#else +#define MZ_TIME_T time_t +#endif + +#define MZ_ASSERT(x) assert(x) + +#ifdef MINIZ_NO_MALLOC +#define MZ_MALLOC(x) NULL +#define MZ_FREE(x) (void)x, ((void)0) +#define MZ_REALLOC(p, x) NULL +#else +#define MZ_MALLOC(x) malloc(x) +#define MZ_FREE(x) free(x) +#define MZ_REALLOC(p, x) realloc(p, x) +#endif + +#define MZ_MAX(a, b) (((a) > (b)) ? (a) : (b)) +#define MZ_MIN(a, b) (((a) < (b)) ? (a) : (b)) +#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj)) + +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN +#define MZ_READ_LE16(p) *((const mz_uint16 *)(p)) +#define MZ_READ_LE32(p) *((const mz_uint32 *)(p)) +#else +#define MZ_READ_LE16(p) \ + ((mz_uint32)(((const mz_uint8 *)(p))[0]) | \ + ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U)) +#define MZ_READ_LE32(p) \ + ((mz_uint32)(((const mz_uint8 *)(p))[0]) | \ + ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U) | \ + ((mz_uint32)(((const mz_uint8 *)(p))[2]) << 16U) | \ + ((mz_uint32)(((const mz_uint8 *)(p))[3]) << 24U)) +#endif + +#define MZ_READ_LE64(p) \ + (((mz_uint64)MZ_READ_LE32(p)) | \ + (((mz_uint64)MZ_READ_LE32((const mz_uint8 *)(p) + sizeof(mz_uint32))) \ + << 32U)) + +#ifdef _MSC_VER +#define MZ_FORCEINLINE __forceinline +#elif defined(__GNUC__) +#define MZ_FORCEINLINE __inline__ __attribute__((__always_inline__)) +#else +#define MZ_FORCEINLINE inline +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +extern MINIZ_EXPORT void *miniz_def_alloc_func(void *opaque, size_t items, + size_t size); +extern MINIZ_EXPORT void miniz_def_free_func(void *opaque, void *address); +extern MINIZ_EXPORT void *miniz_def_realloc_func(void *opaque, void *address, + size_t items, size_t size); + +#define MZ_UINT16_MAX (0xFFFFU) +#define MZ_UINT32_MAX (0xFFFFFFFFU) + +#ifdef __cplusplus +} +#endif +#pragma once + +#ifdef __cplusplus +extern "C" { +#endif +/* ------------------- Low-level Compression API Definitions */ + +/* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly + * slower, and raw/dynamic blocks will be output more frequently). */ +#define TDEFL_LESS_MEMORY 0 + +/* tdefl_init() compression flags logically OR'd together (low 12 bits contain + * the max. number of probes per dictionary search): */ +/* TDEFL_DEFAULT_MAX_PROBES: The compressor defaults to 128 dictionary probes + * per dictionary search. 0=Huffman only, 1=Huffman+LZ (fastest/crap + * compression), 4095=Huffman+LZ (slowest/best compression). */ +enum { + TDEFL_HUFFMAN_ONLY = 0, + TDEFL_DEFAULT_MAX_PROBES = 128, + TDEFL_MAX_PROBES_MASK = 0xFFF +}; + +/* TDEFL_WRITE_ZLIB_HEADER: If set, the compressor outputs a zlib header before + * the deflate data, and the Adler-32 of the source data at the end. Otherwise, + * you'll get raw deflate data. */ +/* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even + * when not writing zlib headers). */ +/* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more + * efficient lazy parsing. */ +/* TDEFL_NONDETERMINISTIC_PARSING_FLAG: Enable to decrease the compressor's + * initialization time to the minimum, but the output may vary from run to run + * given the same input (depending on the contents of memory). */ +/* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) + */ +/* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */ +/* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. */ +/* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. */ +/* The low 12 bits are reserved to control the max # of hash probes per + * dictionary lookup (see TDEFL_MAX_PROBES_MASK). */ +enum { + TDEFL_WRITE_ZLIB_HEADER = 0x01000, + TDEFL_COMPUTE_ADLER32 = 0x02000, + TDEFL_GREEDY_PARSING_FLAG = 0x04000, + TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000, + TDEFL_RLE_MATCHES = 0x10000, + TDEFL_FILTER_MATCHES = 0x20000, + TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000, + TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000 +}; + +/* High level compression functions: */ +/* tdefl_compress_mem_to_heap() compresses a block in memory to a heap block + * allocated via malloc(). */ +/* On entry: */ +/* pSrc_buf, src_buf_len: Pointer and size of source block to compress. */ +/* flags: The max match finder probes (default is 128) logically OR'd against + * the above flags. Higher probes are slower but improve compression. */ +/* On return: */ +/* Function returns a pointer to the compressed data, or NULL on failure. */ +/* *pOut_len will be set to the compressed data's size, which could be larger + * than src_buf_len on uncompressible data. */ +/* The caller must free() the returned block when it's no longer needed. */ +MINIZ_EXPORT void *tdefl_compress_mem_to_heap(const void *pSrc_buf, + size_t src_buf_len, + size_t *pOut_len, int flags); + +/* tdefl_compress_mem_to_mem() compresses a block in memory to another block in + * memory. */ +/* Returns 0 on failure. */ +MINIZ_EXPORT size_t tdefl_compress_mem_to_mem(void *pOut_buf, + size_t out_buf_len, + const void *pSrc_buf, + size_t src_buf_len, int flags); + +/* Compresses an image to a compressed PNG file in memory. */ +/* On entry: */ +/* pImage, w, h, and num_chans describe the image to compress. num_chans may be + * 1, 2, 3, or 4. */ +/* The image pitch in bytes per scanline will be w*num_chans. The leftmost + * pixel on the top scanline is stored first in memory. */ +/* level may range from [0,10], use MZ_NO_COMPRESSION, MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc. or a decent default is MZ_DEFAULT_LEVEL */ +/* If flip is true, the image will be flipped on the Y axis (useful for OpenGL + * apps). */ +/* On return: */ +/* Function returns a pointer to the compressed data, or NULL on failure. */ +/* *pLen_out will be set to the size of the PNG image file. */ +/* The caller must mz_free() the returned heap block (which will typically be + * larger than *pLen_out) when it's no longer needed. */ +MINIZ_EXPORT void * +tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, int h, + int num_chans, size_t *pLen_out, + mz_uint level, mz_bool flip); +MINIZ_EXPORT void *tdefl_write_image_to_png_file_in_memory(const void *pImage, + int w, int h, + int num_chans, + size_t *pLen_out); + +/* Output stream interface. The compressor uses this interface to write + * compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. */ +typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, + void *pUser); + +/* tdefl_compress_mem_to_output() compresses a block to an output stream. The + * above helpers use this function internally. */ +MINIZ_EXPORT mz_bool tdefl_compress_mem_to_output( + const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags); + +enum { + TDEFL_MAX_HUFF_TABLES = 3, + TDEFL_MAX_HUFF_SYMBOLS_0 = 288, + TDEFL_MAX_HUFF_SYMBOLS_1 = 32, + TDEFL_MAX_HUFF_SYMBOLS_2 = 19, + TDEFL_LZ_DICT_SIZE = 32768, + TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1, + TDEFL_MIN_MATCH_LEN = 3, + TDEFL_MAX_MATCH_LEN = 258 +}; + +/* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed + * output block (using static/fixed Huffman codes). */ +#if TDEFL_LESS_MEMORY +enum { + TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024, + TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10, + TDEFL_MAX_HUFF_SYMBOLS = 288, + TDEFL_LZ_HASH_BITS = 12, + TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, + TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, + TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS +}; +#else +enum { + TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024, + TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10, + TDEFL_MAX_HUFF_SYMBOLS = 288, + TDEFL_LZ_HASH_BITS = 15, + TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, + TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, + TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS +}; +#endif + +/* The low-level tdefl functions below may be used directly if the above helper + * functions aren't flexible enough. The low-level functions don't make any heap + * allocations, unlike the above helper functions. */ +typedef enum { + TDEFL_STATUS_BAD_PARAM = -2, + TDEFL_STATUS_PUT_BUF_FAILED = -1, + TDEFL_STATUS_OKAY = 0, + TDEFL_STATUS_DONE = 1 +} tdefl_status; + +/* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */ +typedef enum { + TDEFL_NO_FLUSH = 0, + TDEFL_SYNC_FLUSH = 2, + TDEFL_FULL_FLUSH = 3, + TDEFL_FINISH = 4 +} tdefl_flush; + +/* tdefl's compression state structure. */ +typedef struct { + tdefl_put_buf_func_ptr m_pPut_buf_func; + void *m_pPut_buf_user; + mz_uint m_flags, m_max_probes[2]; + int m_greedy_parsing; + mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size; + mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end; + mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, + m_bit_buffer; + mz_uint m_saved_match_dist, m_saved_match_len, m_saved_lit, + m_output_flush_ofs, m_output_flush_remaining, m_finished, m_block_index, + m_wants_to_finish; + tdefl_status m_prev_return_status; + const void *m_pIn_buf; + void *m_pOut_buf; + size_t *m_pIn_buf_size, *m_pOut_buf_size; + tdefl_flush m_flush; + const mz_uint8 *m_pSrc; + size_t m_src_buf_left, m_out_buf_ofs; + mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1]; + mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; + mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; + mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; + mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE]; + mz_uint16 m_next[TDEFL_LZ_DICT_SIZE]; + mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE]; + mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE]; +} tdefl_compressor; + +/* Initializes the compressor. */ +/* There is no corresponding deinit() function because the tdefl API's do not + * dynamically allocate memory. */ +/* pBut_buf_func: If NULL, output data will be supplied to the specified + * callback. In this case, the user should call the tdefl_compress_buffer() API + * for compression. */ +/* If pBut_buf_func is NULL the user should always call the tdefl_compress() + * API. */ +/* flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, + * etc.) */ +MINIZ_EXPORT tdefl_status tdefl_init(tdefl_compressor *d, + tdefl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags); + +/* Compresses a block of data, consuming as much of the specified input buffer + * as possible, and writing as much compressed data to the specified output + * buffer as possible. */ +MINIZ_EXPORT tdefl_status tdefl_compress(tdefl_compressor *d, + const void *pIn_buf, + size_t *pIn_buf_size, void *pOut_buf, + size_t *pOut_buf_size, + tdefl_flush flush); + +/* tdefl_compress_buffer() is only usable when the tdefl_init() is called with a + * non-NULL tdefl_put_buf_func_ptr. */ +/* tdefl_compress_buffer() always consumes the entire input buffer. */ +MINIZ_EXPORT tdefl_status tdefl_compress_buffer(tdefl_compressor *d, + const void *pIn_buf, + size_t in_buf_size, + tdefl_flush flush); + +MINIZ_EXPORT tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d); +MINIZ_EXPORT mz_uint32 tdefl_get_adler32(tdefl_compressor *d); + +/* Create tdefl_compress() flags given zlib-style compression parameters. */ +/* level may range from [0,10] (where 10 is absolute max compression, but may be + * much slower on some files) */ +/* window_bits may be -15 (raw deflate) or 15 (zlib) */ +/* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, + * MZ_RLE, or MZ_FIXED */ +MINIZ_EXPORT mz_uint tdefl_create_comp_flags_from_zip_params(int level, + int window_bits, + int strategy); + +#ifndef MINIZ_NO_MALLOC +/* Allocate the tdefl_compressor structure in C so that */ +/* non-C language bindings to tdefl_ API don't need to worry about */ +/* structure size and allocation mechanism. */ +MINIZ_EXPORT tdefl_compressor *tdefl_compressor_alloc(void); +MINIZ_EXPORT void tdefl_compressor_free(tdefl_compressor *pComp); +#endif + +#ifdef __cplusplus +} +#endif +#pragma once + +/* ------------------- Low-level Decompression API Definitions */ + +#ifdef __cplusplus +extern "C" { +#endif +/* Decompression flags used by tinfl_decompress(). */ +/* TINFL_FLAG_PARSE_ZLIB_HEADER: If set, the input has a valid zlib header and + * ends with an adler32 checksum (it's a valid zlib stream). Otherwise, the + * input is a raw deflate stream. */ +/* TINFL_FLAG_HAS_MORE_INPUT: If set, there are more input bytes available + * beyond the end of the supplied input buffer. If clear, the input buffer + * contains all remaining input. */ +/* TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF: If set, the output buffer is large + * enough to hold the entire decompressed stream. If clear, the output buffer is + * at least the size of the dictionary (typically 32KB). */ +/* TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the + * decompressed bytes. */ +enum { + TINFL_FLAG_PARSE_ZLIB_HEADER = 1, + TINFL_FLAG_HAS_MORE_INPUT = 2, + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4, + TINFL_FLAG_COMPUTE_ADLER32 = 8 +}; + +/* High level decompression functions: */ +/* tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block + * allocated via malloc(). */ +/* On entry: */ +/* pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data + * to decompress. */ +/* On return: */ +/* Function returns a pointer to the decompressed data, or NULL on failure. */ +/* *pOut_len will be set to the decompressed data's size, which could be larger + * than src_buf_len on uncompressible data. */ +/* The caller must call mz_free() on the returned block when it's no longer + * needed. */ +MINIZ_EXPORT void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, + size_t src_buf_len, + size_t *pOut_len, int flags); + +/* tinfl_decompress_mem_to_mem() decompresses a block in memory to another block + * in memory. */ +/* Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes + * written on success. */ +#define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1)) +MINIZ_EXPORT size_t tinfl_decompress_mem_to_mem(void *pOut_buf, + size_t out_buf_len, + const void *pSrc_buf, + size_t src_buf_len, int flags); + +/* tinfl_decompress_mem_to_callback() decompresses a block in memory to an + * internal 32KB buffer, and a user provided callback function will be called to + * flush the buffer. */ +/* Returns 1 on success or 0 on failure. */ +typedef int (*tinfl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser); +MINIZ_EXPORT int +tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, + tinfl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags); + +struct tinfl_decompressor_tag; +typedef struct tinfl_decompressor_tag tinfl_decompressor; + +#ifndef MINIZ_NO_MALLOC +/* Allocate the tinfl_decompressor structure in C so that */ +/* non-C language bindings to tinfl_ API don't need to worry about */ +/* structure size and allocation mechanism. */ +MINIZ_EXPORT tinfl_decompressor *tinfl_decompressor_alloc(void); +MINIZ_EXPORT void tinfl_decompressor_free(tinfl_decompressor *pDecomp); +#endif + +/* Max size of LZ dictionary. */ +#define TINFL_LZ_DICT_SIZE 32768 + +/* Return status. */ +typedef enum { + /* This flags indicates the inflator needs 1 or more input bytes to make + forward progress, but the caller is indicating that no more are available. + The compressed data */ + /* is probably corrupted. If you call the inflator again with more bytes it'll + try to continue processing the input but this is a BAD sign (either the + data is corrupted or you called it incorrectly). */ + /* If you call it again with no input you'll just get + TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS again. */ + TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS = -4, + + /* This flag indicates that one or more of the input parameters was obviously + bogus. (You can try calling it again, but if you get this error the calling + code is wrong.) */ + TINFL_STATUS_BAD_PARAM = -3, + + /* This flags indicate the inflator is finished but the adler32 check of the + uncompressed data didn't match. If you call it again it'll return + TINFL_STATUS_DONE. */ + TINFL_STATUS_ADLER32_MISMATCH = -2, + + /* This flags indicate the inflator has somehow failed (bad code, corrupted + input, etc.). If you call it again without resetting via tinfl_init() it + it'll just keep on returning the same status failure code. */ + TINFL_STATUS_FAILED = -1, + + /* Any status code less than TINFL_STATUS_DONE must indicate a failure. */ + + /* This flag indicates the inflator has returned every byte of uncompressed + data that it can, has consumed every byte that it needed, has successfully + reached the end of the deflate stream, and */ + /* if zlib headers and adler32 checking enabled that it has successfully + checked the uncompressed data's adler32. If you call it again you'll just + get TINFL_STATUS_DONE over and over again. */ + TINFL_STATUS_DONE = 0, + + /* This flag indicates the inflator MUST have more input data (even 1 byte) + before it can make any more forward progress, or you need to clear the + TINFL_FLAG_HAS_MORE_INPUT */ + /* flag on the next call if you don't have any more source data. If the source + data was somehow corrupted it's also possible (but unlikely) for the + inflator to keep on demanding input to */ + /* proceed, so be sure to properly set the TINFL_FLAG_HAS_MORE_INPUT flag. */ + TINFL_STATUS_NEEDS_MORE_INPUT = 1, + + /* This flag indicates the inflator definitely has 1 or more bytes of + uncompressed data available, but it cannot write this data into the output + buffer. */ + /* Note if the source compressed data was corrupted it's possible for the + inflator to return a lot of uncompressed data to the caller. I've been + assuming you know how much uncompressed data to expect */ + /* (either exact or worst case) and will stop calling the inflator and fail + after receiving too much. In pure streaming scenarios where you have no + idea how many bytes to expect this may not be possible */ + /* so I may need to add some code to address this. */ + TINFL_STATUS_HAS_MORE_OUTPUT = 2 +} tinfl_status; + +/* Initializes the decompressor to its initial state. */ +#define tinfl_init(r) \ + do { \ + (r)->m_state = 0; \ + } \ + MZ_MACRO_END +#define tinfl_get_adler32(r) (r)->m_check_adler32 + +/* Main low-level decompressor coroutine function. This is the only function + * actually needed for decompression. All the other functions are just + * high-level helpers for improved usability. */ +/* This is a universal API, i.e. it can be used as a building block to build any + * desired higher level decompression API. In the limit case, it can be called + * once per every byte input or output. */ +MINIZ_EXPORT tinfl_status tinfl_decompress( + tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, + mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, + const mz_uint32 decomp_flags); + +/* Internal/private bits follow. */ +enum { + TINFL_MAX_HUFF_TABLES = 3, + TINFL_MAX_HUFF_SYMBOLS_0 = 288, + TINFL_MAX_HUFF_SYMBOLS_1 = 32, + TINFL_MAX_HUFF_SYMBOLS_2 = 19, + TINFL_FAST_LOOKUP_BITS = 10, + TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS +}; + +typedef struct { + mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0]; + mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], + m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2]; +} tinfl_huff_table; + +#if MINIZ_HAS_64BIT_REGISTERS +#define TINFL_USE_64BIT_BITBUF 1 +#else +#define TINFL_USE_64BIT_BITBUF 0 +#endif + +#if TINFL_USE_64BIT_BITBUF +typedef mz_uint64 tinfl_bit_buf_t; +#define TINFL_BITBUF_SIZE (64) +#else +typedef mz_uint32 tinfl_bit_buf_t; +#define TINFL_BITBUF_SIZE (32) +#endif + +struct tinfl_decompressor_tag { + mz_uint32 m_state, m_num_bits, m_zhdr0, m_zhdr1, m_z_adler32, m_final, m_type, + m_check_adler32, m_dist, m_counter, m_num_extra, + m_table_sizes[TINFL_MAX_HUFF_TABLES]; + tinfl_bit_buf_t m_bit_buf; + size_t m_dist_from_out_buf_start; + tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES]; + mz_uint8 m_raw_header[4], + m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137]; +}; + +#ifdef __cplusplus +} +#endif + +#pragma once + +/* ------------------- ZIP archive reading/writing */ + +#ifndef MINIZ_NO_ARCHIVE_APIS + +#ifdef __cplusplus +extern "C" { +#endif + +enum { + /* Note: These enums can be reduced as needed to save memory or stack space - + they are pretty conservative. */ + MZ_ZIP_MAX_IO_BUF_SIZE = 8 * 1024, + MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 512, + MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 512 +}; + +typedef struct { + /* Central directory file index. */ + mz_uint32 m_file_index; + + /* Byte offset of this entry in the archive's central directory. Note we + * currently only support up to UINT_MAX or less bytes in the central dir. */ + mz_uint64 m_central_dir_ofs; + + /* These fields are copied directly from the zip's central dir. */ + mz_uint16 m_version_made_by; + mz_uint16 m_version_needed; + mz_uint16 m_bit_flag; + mz_uint16 m_method; + +#ifndef MINIZ_NO_TIME + MZ_TIME_T m_time; +#endif + + /* CRC-32 of uncompressed data. */ + mz_uint32 m_crc32; + + /* File's compressed size. */ + mz_uint64 m_comp_size; + + /* File's uncompressed size. Note, I've seen some old archives where directory + * entries had 512 bytes for their uncompressed sizes, but when you try to + * unpack them you actually get 0 bytes. */ + mz_uint64 m_uncomp_size; + + /* Zip internal and external file attributes. */ + mz_uint16 m_internal_attr; + mz_uint32 m_external_attr; + + /* Entry's local header file offset in bytes. */ + mz_uint64 m_local_header_ofs; + + /* Size of comment in bytes. */ + mz_uint32 m_comment_size; + + /* MZ_TRUE if the entry appears to be a directory. */ + mz_bool m_is_directory; + + /* MZ_TRUE if the entry uses encryption/strong encryption (which miniz_zip + * doesn't support) */ + mz_bool m_is_encrypted; + + /* MZ_TRUE if the file is not encrypted, a patch file, and if it uses a + * compression method we support. */ + mz_bool m_is_supported; + + /* Filename. If string ends in '/' it's a subdirectory entry. */ + /* Guaranteed to be zero terminated, may be truncated to fit. */ + char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE]; + + /* Comment field. */ + /* Guaranteed to be zero terminated, may be truncated to fit. */ + char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE]; + +} mz_zip_archive_file_stat; + +typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n); +typedef size_t (*mz_file_write_func)(void *pOpaque, mz_uint64 file_ofs, + const void *pBuf, size_t n); +typedef mz_bool (*mz_file_needs_keepalive)(void *pOpaque); + +struct mz_zip_internal_state_tag; +typedef struct mz_zip_internal_state_tag mz_zip_internal_state; + +typedef enum { + MZ_ZIP_MODE_INVALID = 0, + MZ_ZIP_MODE_READING = 1, + MZ_ZIP_MODE_WRITING = 2, + MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3 +} mz_zip_mode; + +typedef enum { + MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100, + MZ_ZIP_FLAG_IGNORE_PATH = 0x0200, + MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400, + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800, + MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG = + 0x1000, /* if enabled, mz_zip_reader_locate_file() will be called on each + file as its validated to ensure the func finds the file in the + central dir (intended for testing) */ + MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY = + 0x2000, /* validate the local headers, but don't decompress the entire + file and check the crc32 */ + MZ_ZIP_FLAG_WRITE_ZIP64 = + 0x4000, /* always use the zip64 file format, instead of the original zip + file format with automatic switch to zip64. Use as flags + parameter with mz_zip_writer_init*_v2 */ + MZ_ZIP_FLAG_WRITE_ALLOW_READING = 0x8000, + MZ_ZIP_FLAG_ASCII_FILENAME = 0x10000, + /*After adding a compressed file, seek back + to local file header and set the correct sizes*/ + MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE = 0x20000 +} mz_zip_flags; + +typedef enum { + MZ_ZIP_TYPE_INVALID = 0, + MZ_ZIP_TYPE_USER, + MZ_ZIP_TYPE_MEMORY, + MZ_ZIP_TYPE_HEAP, + MZ_ZIP_TYPE_FILE, + MZ_ZIP_TYPE_CFILE, + MZ_ZIP_TOTAL_TYPES +} mz_zip_type; + +/* miniz error codes. Be sure to update mz_zip_get_error_string() if you add or + * modify this enum. */ +typedef enum { + MZ_ZIP_NO_ERROR = 0, + MZ_ZIP_UNDEFINED_ERROR, + MZ_ZIP_TOO_MANY_FILES, + MZ_ZIP_FILE_TOO_LARGE, + MZ_ZIP_UNSUPPORTED_METHOD, + MZ_ZIP_UNSUPPORTED_ENCRYPTION, + MZ_ZIP_UNSUPPORTED_FEATURE, + MZ_ZIP_FAILED_FINDING_CENTRAL_DIR, + MZ_ZIP_NOT_AN_ARCHIVE, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED, + MZ_ZIP_UNSUPPORTED_MULTIDISK, + MZ_ZIP_DECOMPRESSION_FAILED, + MZ_ZIP_COMPRESSION_FAILED, + MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE, + MZ_ZIP_CRC_CHECK_FAILED, + MZ_ZIP_UNSUPPORTED_CDIR_SIZE, + MZ_ZIP_ALLOC_FAILED, + MZ_ZIP_FILE_OPEN_FAILED, + MZ_ZIP_FILE_CREATE_FAILED, + MZ_ZIP_FILE_WRITE_FAILED, + MZ_ZIP_FILE_READ_FAILED, + MZ_ZIP_FILE_CLOSE_FAILED, + MZ_ZIP_FILE_SEEK_FAILED, + MZ_ZIP_FILE_STAT_FAILED, + MZ_ZIP_INVALID_PARAMETER, + MZ_ZIP_INVALID_FILENAME, + MZ_ZIP_BUF_TOO_SMALL, + MZ_ZIP_INTERNAL_ERROR, + MZ_ZIP_FILE_NOT_FOUND, + MZ_ZIP_ARCHIVE_TOO_LARGE, + MZ_ZIP_VALIDATION_FAILED, + MZ_ZIP_WRITE_CALLBACK_FAILED, + MZ_ZIP_TOTAL_ERRORS +} mz_zip_error; + +typedef struct { + mz_uint64 m_archive_size; + mz_uint64 m_central_directory_file_ofs; + + /* We only support up to UINT32_MAX files in zip64 mode. */ + mz_uint32 m_total_files; + mz_zip_mode m_zip_mode; + mz_zip_type m_zip_type; + mz_zip_error m_last_error; + + mz_uint64 m_file_offset_alignment; + + mz_alloc_func m_pAlloc; + mz_free_func m_pFree; + mz_realloc_func m_pRealloc; + void *m_pAlloc_opaque; + + mz_file_read_func m_pRead; + mz_file_write_func m_pWrite; + mz_file_needs_keepalive m_pNeeds_keepalive; + void *m_pIO_opaque; + + mz_zip_internal_state *m_pState; + +} mz_zip_archive; + +typedef struct { + mz_zip_archive *pZip; + mz_uint flags; + + int status; +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + mz_uint file_crc32; +#endif + mz_uint64 read_buf_size, read_buf_ofs, read_buf_avail, comp_remaining, + out_buf_ofs, cur_file_ofs; + mz_zip_archive_file_stat file_stat; + void *pRead_buf; + void *pWrite_buf; + + size_t out_blk_remain; + + tinfl_decompressor inflator; + +} mz_zip_reader_extract_iter_state; + +/* -------- ZIP reading */ + +/* Inits a ZIP archive reader. */ +/* These functions read and validate the archive's central directory. */ +MINIZ_EXPORT mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, + mz_uint flags); + +MINIZ_EXPORT mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, + const void *pMem, size_t size, + mz_uint flags); + +#ifndef MINIZ_NO_STDIO +/* Read a archive from a disk file. */ +/* file_start_ofs is the file offset where the archive actually begins, or 0. */ +/* actual_archive_size is the true total size of the archive, which may be + * smaller than the file's actual size on disk. If zero the entire file is + * treated as the archive. */ +MINIZ_EXPORT mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 flags); +MINIZ_EXPORT mz_bool mz_zip_reader_init_file_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags, + mz_uint64 file_start_ofs, + mz_uint64 archive_size); +MINIZ_EXPORT mz_bool mz_zip_reader_init_file_v2_rpb(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags, + mz_uint64 file_start_ofs, + mz_uint64 archive_size); + +/* Read an archive from an already opened FILE, beginning at the current file + * position. */ +/* The archive is assumed to be archive_size bytes long. If archive_size is 0, + * then the entire rest of the file is assumed to contain the archive. */ +/* The FILE will NOT be closed when mz_zip_reader_end() is called. */ +MINIZ_EXPORT mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, + MZ_FILE *pFile, + mz_uint64 archive_size, + mz_uint flags); +#endif + +/* Ends archive reading, freeing all allocations, and closing the input archive + * file if mz_zip_reader_init_file() was used. */ +MINIZ_EXPORT mz_bool mz_zip_reader_end(mz_zip_archive *pZip); + +/* -------- ZIP reading or writing */ + +/* Clears a mz_zip_archive struct to all zeros. */ +/* Important: This must be done before passing the struct to any mz_zip + * functions. */ +MINIZ_EXPORT void mz_zip_zero_struct(mz_zip_archive *pZip); + +MINIZ_EXPORT mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip); +MINIZ_EXPORT mz_zip_type mz_zip_get_type(mz_zip_archive *pZip); + +/* Returns the total number of files in the archive. */ +MINIZ_EXPORT mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip); + +MINIZ_EXPORT mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip); +MINIZ_EXPORT mz_uint64 +mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip); +MINIZ_EXPORT MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip); + +/* Reads n bytes of raw archive data, starting at file offset file_ofs, to pBuf. + */ +MINIZ_EXPORT size_t mz_zip_read_archive_data(mz_zip_archive *pZip, + mz_uint64 file_ofs, void *pBuf, + size_t n); + +/* All mz_zip funcs set the m_last_error field in the mz_zip_archive struct. + * These functions retrieve/manipulate this field. */ +/* Note that the m_last_error functionality is not thread safe. */ +MINIZ_EXPORT mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, + mz_zip_error err_num); +MINIZ_EXPORT mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip); +MINIZ_EXPORT mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip); +MINIZ_EXPORT mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip); +MINIZ_EXPORT const char *mz_zip_get_error_string(mz_zip_error mz_err); + +/* MZ_TRUE if the archive file entry is a directory entry. */ +MINIZ_EXPORT mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, + mz_uint file_index); + +/* MZ_TRUE if the file is encrypted/strong encrypted. */ +MINIZ_EXPORT mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, + mz_uint file_index); + +/* MZ_TRUE if the compression method is supported, and the file is not + * encrypted, and the file is not a compressed patch file. */ +MINIZ_EXPORT mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, + mz_uint file_index); + +/* Retrieves the filename of an archive file entry. */ +/* Returns the number of bytes written to pFilename, or if filename_buf_size is + * 0 this function returns the number of bytes needed to fully store the + * filename. */ +MINIZ_EXPORT mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, + mz_uint file_index, + char *pFilename, + mz_uint filename_buf_size); + +/* Attempts to locates a file in the archive's central directory. */ +/* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */ +/* Returns -1 if the file cannot be found. */ +MINIZ_EXPORT int mz_zip_reader_locate_file(mz_zip_archive *pZip, + const char *pName, + const char *pComment, mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, + const char *pName, + const char *pComment, + mz_uint flags, + mz_uint32 *file_index); + +/* Returns detailed information about an archive file entry. */ +MINIZ_EXPORT mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, + mz_uint file_index, + mz_zip_archive_file_stat *pStat); + +/* MZ_TRUE if the file is in zip64 format. */ +/* A file is considered zip64 if it contained a zip64 end of central directory + * marker, or if it contained any zip64 extended file information fields in the + * central directory. */ +MINIZ_EXPORT mz_bool mz_zip_is_zip64(mz_zip_archive *pZip); + +/* Returns the total central directory size in bytes. */ +/* The current max supported size is <= MZ_UINT32_MAX. */ +MINIZ_EXPORT size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip); + +/* Extracts a archive file to a memory buffer using no memory allocation. */ +/* There must be at least enough room on the stack to store the inflator's state + * (~34KB or so). */ +MINIZ_EXPORT mz_bool mz_zip_reader_extract_to_mem_no_alloc( + mz_zip_archive *pZip, mz_uint file_index, void *pBuf, size_t buf_size, + mz_uint flags, void *pUser_read_buf, size_t user_read_buf_size); +MINIZ_EXPORT mz_bool mz_zip_reader_extract_file_to_mem_no_alloc( + mz_zip_archive *pZip, const char *pFilename, void *pBuf, size_t buf_size, + mz_uint flags, void *pUser_read_buf, size_t user_read_buf_size); + +/* Extracts a archive file to a memory buffer. */ +MINIZ_EXPORT mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive *pZip, + mz_uint file_index, + void *pBuf, size_t buf_size, + mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, + const char *pFilename, + void *pBuf, + size_t buf_size, + mz_uint flags); + +/* Extracts a archive file to a dynamically allocated heap buffer. */ +/* The memory will be allocated via the mz_zip_archive's alloc/realloc + * functions. */ +/* Returns NULL and sets the last error on failure. */ +MINIZ_EXPORT void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, + mz_uint file_index, + size_t *pSize, mz_uint flags); +MINIZ_EXPORT void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, + const char *pFilename, + size_t *pSize, + mz_uint flags); + +/* Extracts a archive file using a callback function to output the file's data. + */ +MINIZ_EXPORT mz_bool mz_zip_reader_extract_to_callback( + mz_zip_archive *pZip, mz_uint file_index, mz_file_write_func pCallback, + void *pOpaque, mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_reader_extract_file_to_callback( + mz_zip_archive *pZip, const char *pFilename, mz_file_write_func pCallback, + void *pOpaque, mz_uint flags); + +/* Extract a file iteratively */ +MINIZ_EXPORT mz_zip_reader_extract_iter_state * +mz_zip_reader_extract_iter_new(mz_zip_archive *pZip, mz_uint file_index, + mz_uint flags); +MINIZ_EXPORT mz_zip_reader_extract_iter_state * +mz_zip_reader_extract_file_iter_new(mz_zip_archive *pZip, const char *pFilename, + mz_uint flags); +MINIZ_EXPORT size_t mz_zip_reader_extract_iter_read( + mz_zip_reader_extract_iter_state *pState, void *pvBuf, size_t buf_size); +MINIZ_EXPORT mz_bool +mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state *pState); + +#ifndef MINIZ_NO_STDIO +/* Extracts a archive file to a disk file and sets its last accessed and + * modified times. */ +/* This function only extracts files, not archive directory records. */ +MINIZ_EXPORT mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, + mz_uint file_index, + const char *pDst_filename, + mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_reader_extract_file_to_file( + mz_zip_archive *pZip, const char *pArchive_filename, + const char *pDst_filename, mz_uint flags); + +/* Extracts a archive file starting at the current position in the destination + * FILE stream. */ +MINIZ_EXPORT mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, + mz_uint file_index, + MZ_FILE *File, + mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_reader_extract_file_to_cfile( + mz_zip_archive *pZip, const char *pArchive_filename, MZ_FILE *pFile, + mz_uint flags); +#endif + +#if 0 +/* TODO */ + typedef void *mz_zip_streaming_extract_state_ptr; + mz_zip_streaming_extract_state_ptr mz_zip_streaming_extract_begin(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags); + uint64_t mz_zip_streaming_extract_get_size(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); + uint64_t mz_zip_streaming_extract_get_cur_ofs(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); + mz_bool mz_zip_streaming_extract_seek(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, uint64_t new_ofs); + size_t mz_zip_streaming_extract_read(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, void *pBuf, size_t buf_size); + mz_bool mz_zip_streaming_extract_end(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); +#endif + +/* This function compares the archive's local headers, the optional local zip64 + * extended information block, and the optional descriptor following the + * compressed data vs. the data in the central directory. */ +/* It also validates that each file can be successfully uncompressed unless the + * MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY is specified. */ +MINIZ_EXPORT mz_bool mz_zip_validate_file(mz_zip_archive *pZip, + mz_uint file_index, mz_uint flags); + +/* Validates an entire archive by calling mz_zip_validate_file() on each file. + */ +MINIZ_EXPORT mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, + mz_uint flags); + +/* Misc utils/helpers, valid for ZIP reading or writing */ +MINIZ_EXPORT mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, + mz_uint flags, + mz_zip_error *pErr); +MINIZ_EXPORT mz_bool mz_zip_validate_file_archive(const char *pFilename, + mz_uint flags, + mz_zip_error *pErr); + +/* Universal end function - calls either mz_zip_reader_end() or + * mz_zip_writer_end(). */ +MINIZ_EXPORT mz_bool mz_zip_end(mz_zip_archive *pZip); + +/* -------- ZIP writing */ + +#ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + +/* Inits a ZIP archive writer. */ +/*Set pZip->m_pWrite (and pZip->m_pIO_opaque) before calling mz_zip_writer_init + * or mz_zip_writer_init_v2*/ +/*The output is streamable, i.e. file_ofs in mz_file_write_func always increases + * only by n*/ +MINIZ_EXPORT mz_bool mz_zip_writer_init(mz_zip_archive *pZip, + mz_uint64 existing_size); +MINIZ_EXPORT mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, + mz_uint64 existing_size, + mz_uint flags); + +MINIZ_EXPORT mz_bool mz_zip_writer_init_heap( + mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, + size_t initial_allocation_size); +MINIZ_EXPORT mz_bool mz_zip_writer_init_heap_v2( + mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, + size_t initial_allocation_size, mz_uint flags); + +#ifndef MINIZ_NO_STDIO +MINIZ_EXPORT mz_bool +mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning); +MINIZ_EXPORT mz_bool mz_zip_writer_init_file_v2( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning, mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, + MZ_FILE *pFile, mz_uint flags); +#endif + +/* Converts a ZIP archive reader object into a writer object, to allow efficient + * in-place file appends to occur on an existing archive. */ +/* For archives opened using mz_zip_reader_init_file, pFilename must be the + * archive's filename so it can be reopened for writing. If the file can't be + * reopened, mz_zip_reader_end() will be called. */ +/* For archives opened using mz_zip_reader_init_mem, the memory block must be + * growable using the realloc callback (which defaults to realloc unless you've + * overridden it). */ +/* Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's + * user provided m_pWrite function cannot be NULL. */ +/* Note: In-place archive modification is not recommended unless you know what + * you're doing, because if execution stops or something goes wrong before */ +/* the archive is finalized the file's central directory will be hosed. */ +MINIZ_EXPORT mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, + const char *pFilename); +MINIZ_EXPORT mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags); +MINIZ_EXPORT mz_bool mz_zip_writer_init_from_reader_v2_noreopen( + mz_zip_archive *pZip, const char *pFilename, mz_uint flags); + +/* Adds the contents of a memory buffer to an archive. These functions record + * the current local time into the archive. */ +/* To add a directory entry, call this method with an archive name ending in a + * forwardslash with an empty buffer. */ +/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or + * just set to MZ_DEFAULT_COMPRESSION. */ +MINIZ_EXPORT mz_bool mz_zip_writer_add_mem(mz_zip_archive *pZip, + const char *pArchive_name, + const void *pBuf, size_t buf_size, + mz_uint level_and_flags); + +/* Like mz_zip_writer_add_mem(), except you can specify a file comment field, + * and optionally supply the function with already compressed data. */ +/* uncomp_size/uncomp_crc32 are only used if the MZ_ZIP_FLAG_COMPRESSED_DATA + * flag is specified. */ +MINIZ_EXPORT mz_bool mz_zip_writer_add_mem_ex( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, mz_uint32 uncomp_crc32); + +MINIZ_EXPORT mz_bool mz_zip_writer_add_mem_ex_v2( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, mz_uint32 uncomp_crc32, + MZ_TIME_T *last_modified, const char *user_extra_data_local, + mz_uint user_extra_data_local_len, const char *user_extra_data_central, + mz_uint user_extra_data_central_len); + +/* Adds the contents of a file to an archive. This function also records the + * disk file's modified time into the archive. */ +/* File data is supplied via a read callback function. User + * mz_zip_writer_add_(c)file to add a file directly.*/ +MINIZ_EXPORT mz_bool mz_zip_writer_add_read_buf_callback( + mz_zip_archive *pZip, const char *pArchive_name, + mz_file_read_func read_callback, void *callback_opaque, mz_uint64 max_size, + const MZ_TIME_T *pFile_time, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint32 ext_attributes, + const char *user_extra_data_local, mz_uint user_extra_data_local_len, + const char *user_extra_data_central, mz_uint user_extra_data_central_len); + +#ifndef MINIZ_NO_STDIO +/* Adds the contents of a disk file to an archive. This function also records + * the disk file's modified time into the archive. */ +/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or + * just set to MZ_DEFAULT_COMPRESSION. */ +MINIZ_EXPORT mz_bool mz_zip_writer_add_file( + mz_zip_archive *pZip, const char *pArchive_name, const char *pSrc_filename, + const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags, + mz_uint32 ext_attributes); + +/* Like mz_zip_writer_add_file(), except the file data is read from the + * specified FILE stream. */ +MINIZ_EXPORT mz_bool mz_zip_writer_add_cfile( + mz_zip_archive *pZip, const char *pArchive_name, MZ_FILE *pSrc_file, + mz_uint64 max_size, const MZ_TIME_T *pFile_time, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, mz_uint32 ext_attributes, + const char *user_extra_data_local, mz_uint user_extra_data_local_len, + const char *user_extra_data_central, mz_uint user_extra_data_central_len); +#endif + +/* Adds a file to an archive by fully cloning the data from another archive. */ +/* This function fully clones the source file's compressed data (no + * recompression), along with its full filename, extra data (it may add or + * modify the zip64 local header extra data field), and the optional descriptor + * following the compressed data. */ +MINIZ_EXPORT mz_bool mz_zip_writer_add_from_zip_reader( + mz_zip_archive *pZip, mz_zip_archive *pSource_zip, mz_uint src_file_index); + +/* Finalizes the archive by writing the central directory records followed by + * the end of central directory record. */ +/* After an archive is finalized, the only valid call on the mz_zip_archive + * struct is mz_zip_writer_end(). */ +/* An archive must be manually finalized by calling this function for it to be + * valid. */ +MINIZ_EXPORT mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip); + +/* Finalizes a heap archive, returning a pointer to the heap block and its size. + */ +/* The heap block will be allocated using the mz_zip_archive's alloc/realloc + * callbacks. */ +MINIZ_EXPORT mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, + void **ppBuf, + size_t *pSize); + +/* Ends archive writing, freeing all allocations, and closing the output file if + * mz_zip_writer_init_file() was used. */ +/* Note for the archive to be valid, it *must* have been finalized before ending + * (this function will not do it for you). */ +MINIZ_EXPORT mz_bool mz_zip_writer_end(mz_zip_archive *pZip); + +/* -------- Misc. high-level helper functions: */ + +/* mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) + * appends a memory blob to a ZIP archive. */ +/* Note this is NOT a fully safe operation. If it crashes or dies in some way + * your archive can be left in a screwed up state (without a central directory). + */ +/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or + * just set to MZ_DEFAULT_COMPRESSION. */ +/* TODO: Perhaps add an option to leave the existing central dir in place in + * case the add dies? We could then truncate the file (so the old central dir + * would be at the end) if something goes wrong. */ +MINIZ_EXPORT mz_bool mz_zip_add_mem_to_archive_file_in_place( + const char *pZip_filename, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags); +MINIZ_EXPORT mz_bool mz_zip_add_mem_to_archive_file_in_place_v2( + const char *pZip_filename, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_zip_error *pErr); + +/* Reads a single file from an archive into a heap block. */ +/* If pComment is not NULL, only the file with the specified comment will be + * extracted. */ +/* Returns NULL on failure. */ +MINIZ_EXPORT void * +mz_zip_extract_archive_file_to_heap(const char *pZip_filename, + const char *pArchive_name, size_t *pSize, + mz_uint flags); +MINIZ_EXPORT void *mz_zip_extract_archive_file_to_heap_v2( + const char *pZip_filename, const char *pArchive_name, const char *pComment, + size_t *pSize, mz_uint flags, mz_zip_error *pErr); + +#endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */ + +#ifdef __cplusplus +} +#endif + +#endif /* MINIZ_NO_ARCHIVE_APIS */ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + **************************************************************************/ + +typedef unsigned char mz_validate_uint16[sizeof(mz_uint16) == 2 ? 1 : -1]; +typedef unsigned char mz_validate_uint32[sizeof(mz_uint32) == 4 ? 1 : -1]; +typedef unsigned char mz_validate_uint64[sizeof(mz_uint64) == 8 ? 1 : -1]; + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- zlib-style API's */ + +mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len) { + mz_uint32 i, s1 = (mz_uint32)(adler & 0xffff), s2 = (mz_uint32)(adler >> 16); + size_t block_len = buf_len % 5552; + if (!ptr) + return MZ_ADLER32_INIT; + while (buf_len) { + for (i = 0; i + 7 < block_len; i += 8, ptr += 8) { + s1 += ptr[0], s2 += s1; + s1 += ptr[1], s2 += s1; + s1 += ptr[2], s2 += s1; + s1 += ptr[3], s2 += s1; + s1 += ptr[4], s2 += s1; + s1 += ptr[5], s2 += s1; + s1 += ptr[6], s2 += s1; + s1 += ptr[7], s2 += s1; + } + for (; i < block_len; ++i) + s1 += *ptr++, s2 += s1; + s1 %= 65521U, s2 %= 65521U; + buf_len -= block_len; + block_len = 5552; + } + return (s2 << 16) + s1; +} + +/* Karl Malbrain's compact CRC-32. See "A compact CCITT crc16 and crc32 C + * implementation that balances processor cache usage against speed": + * http://www.geocities.com/malbrain/ */ +#if 0 + mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len) + { + static const mz_uint32 s_crc32[16] = { 0, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, + 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c }; + mz_uint32 crcu32 = (mz_uint32)crc; + if (!ptr) + return MZ_CRC32_INIT; + crcu32 = ~crcu32; + while (buf_len--) + { + mz_uint8 b = *ptr++; + crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b & 0xF)]; + crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b >> 4)]; + } + return ~crcu32; + } +#elif defined(USE_EXTERNAL_MZCRC) +/* If USE_EXTERNAL_CRC is defined, an external module will export the + * mz_crc32() symbol for us to use, e.g. an SSE-accelerated version. + * Depending on the impl, it may be necessary to ~ the input/output crc values. + */ +mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len); +#else +/* Faster, but larger CPU cache footprint. + */ +mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len) { + static const mz_uint32 s_crc_table[256] = { + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, + 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, + 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2, + 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, + 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, + 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, + 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C, + 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, + 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, + 0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, + 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106, + 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, + 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, + 0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, + 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, + 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, + 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, + 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, + 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, + 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, + 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, + 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84, + 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, + 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, + 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, + 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E, + 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, + 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, + 0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, + 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28, + 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, + 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, + 0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, + 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, + 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, + 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, + 0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, + 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, + 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, + 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, + 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D}; + + mz_uint32 crc32 = (mz_uint32)crc ^ 0xFFFFFFFF; + const mz_uint8 *pByte_buf = (const mz_uint8 *)ptr; + + while (buf_len >= 4) { + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF]; + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[1]) & 0xFF]; + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[2]) & 0xFF]; + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[3]) & 0xFF]; + pByte_buf += 4; + buf_len -= 4; + } + + while (buf_len) { + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF]; + ++pByte_buf; + --buf_len; + } + + return ~crc32; +} +#endif + +void mz_free(void *p) { MZ_FREE(p); } + +MINIZ_EXPORT void *miniz_def_alloc_func(void *opaque, size_t items, + size_t size) { + (void)opaque, (void)items, (void)size; + return MZ_MALLOC(items * size); +} +MINIZ_EXPORT void miniz_def_free_func(void *opaque, void *address) { + (void)opaque, (void)address; + MZ_FREE(address); +} +MINIZ_EXPORT void *miniz_def_realloc_func(void *opaque, void *address, + size_t items, size_t size) { + (void)opaque, (void)address, (void)items, (void)size; + return MZ_REALLOC(address, items * size); +} + +const char *mz_version(void) { return MZ_VERSION; } + +#ifndef MINIZ_NO_ZLIB_APIS + +int mz_deflateInit(mz_streamp pStream, int level) { + return mz_deflateInit2(pStream, level, MZ_DEFLATED, MZ_DEFAULT_WINDOW_BITS, 9, + MZ_DEFAULT_STRATEGY); +} + +int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, + int mem_level, int strategy) { + tdefl_compressor *pComp; + mz_uint comp_flags = + TDEFL_COMPUTE_ADLER32 | + tdefl_create_comp_flags_from_zip_params(level, window_bits, strategy); + + if (!pStream) + return MZ_STREAM_ERROR; + if ((method != MZ_DEFLATED) || ((mem_level < 1) || (mem_level > 9)) || + ((window_bits != MZ_DEFAULT_WINDOW_BITS) && + (-window_bits != MZ_DEFAULT_WINDOW_BITS))) + return MZ_PARAM_ERROR; + + pStream->data_type = 0; + pStream->adler = MZ_ADLER32_INIT; + pStream->msg = NULL; + pStream->reserved = 0; + pStream->total_in = 0; + pStream->total_out = 0; + if (!pStream->zalloc) + pStream->zalloc = miniz_def_alloc_func; + if (!pStream->zfree) + pStream->zfree = miniz_def_free_func; + + pComp = (tdefl_compressor *)pStream->zalloc(pStream->opaque, 1, + sizeof(tdefl_compressor)); + if (!pComp) + return MZ_MEM_ERROR; + + pStream->state = (struct mz_internal_state *)pComp; + + if (tdefl_init(pComp, NULL, NULL, comp_flags) != TDEFL_STATUS_OKAY) { + mz_deflateEnd(pStream); + return MZ_PARAM_ERROR; + } + + return MZ_OK; +} + +int mz_deflateReset(mz_streamp pStream) { + if ((!pStream) || (!pStream->state) || (!pStream->zalloc) || + (!pStream->zfree)) + return MZ_STREAM_ERROR; + pStream->total_in = pStream->total_out = 0; + tdefl_init((tdefl_compressor *)pStream->state, NULL, NULL, + ((tdefl_compressor *)pStream->state)->m_flags); + return MZ_OK; +} + +int mz_deflate(mz_streamp pStream, int flush) { + size_t in_bytes, out_bytes; + mz_ulong orig_total_in, orig_total_out; + int mz_status = MZ_OK; + + if ((!pStream) || (!pStream->state) || (flush < 0) || (flush > MZ_FINISH) || + (!pStream->next_out)) + return MZ_STREAM_ERROR; + if (!pStream->avail_out) + return MZ_BUF_ERROR; + + if (flush == MZ_PARTIAL_FLUSH) + flush = MZ_SYNC_FLUSH; + + if (((tdefl_compressor *)pStream->state)->m_prev_return_status == + TDEFL_STATUS_DONE) + return (flush == MZ_FINISH) ? MZ_STREAM_END : MZ_BUF_ERROR; + + orig_total_in = pStream->total_in; + orig_total_out = pStream->total_out; + for (;;) { + tdefl_status defl_status; + in_bytes = pStream->avail_in; + out_bytes = pStream->avail_out; + + defl_status = tdefl_compress((tdefl_compressor *)pStream->state, + pStream->next_in, &in_bytes, pStream->next_out, + &out_bytes, (tdefl_flush)flush); + pStream->next_in += (mz_uint)in_bytes; + pStream->avail_in -= (mz_uint)in_bytes; + pStream->total_in += (mz_uint)in_bytes; + pStream->adler = tdefl_get_adler32((tdefl_compressor *)pStream->state); + + pStream->next_out += (mz_uint)out_bytes; + pStream->avail_out -= (mz_uint)out_bytes; + pStream->total_out += (mz_uint)out_bytes; + + if (defl_status < 0) { + mz_status = MZ_STREAM_ERROR; + break; + } else if (defl_status == TDEFL_STATUS_DONE) { + mz_status = MZ_STREAM_END; + break; + } else if (!pStream->avail_out) + break; + else if ((!pStream->avail_in) && (flush != MZ_FINISH)) { + if ((flush) || (pStream->total_in != orig_total_in) || + (pStream->total_out != orig_total_out)) + break; + return MZ_BUF_ERROR; /* Can't make forward progress without some input. + */ + } + } + return mz_status; +} + +int mz_deflateEnd(mz_streamp pStream) { + if (!pStream) + return MZ_STREAM_ERROR; + if (pStream->state) { + pStream->zfree(pStream->opaque, pStream->state); + pStream->state = NULL; + } + return MZ_OK; +} + +mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len) { + (void)pStream; + /* This is really over conservative. (And lame, but it's actually pretty + * tricky to compute a true upper bound given the way tdefl's blocking works.) + */ + return MZ_MAX(128 + (source_len * 110) / 100, + 128 + source_len + ((source_len / (31 * 1024)) + 1) * 5); +} + +int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len, int level) { + int status; + mz_stream stream; + memset(&stream, 0, sizeof(stream)); + + /* In case mz_ulong is 64-bits (argh I hate longs). */ + if ((source_len | *pDest_len) > 0xFFFFFFFFU) + return MZ_PARAM_ERROR; + + stream.next_in = pSource; + stream.avail_in = (mz_uint32)source_len; + stream.next_out = pDest; + stream.avail_out = (mz_uint32)*pDest_len; + + status = mz_deflateInit(&stream, level); + if (status != MZ_OK) + return status; + + status = mz_deflate(&stream, MZ_FINISH); + if (status != MZ_STREAM_END) { + mz_deflateEnd(&stream); + return (status == MZ_OK) ? MZ_BUF_ERROR : status; + } + + *pDest_len = stream.total_out; + return mz_deflateEnd(&stream); +} + +int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len) { + return mz_compress2(pDest, pDest_len, pSource, source_len, + MZ_DEFAULT_COMPRESSION); +} + +mz_ulong mz_compressBound(mz_ulong source_len) { + return mz_deflateBound(NULL, source_len); +} + +typedef struct { + tinfl_decompressor m_decomp; + mz_uint m_dict_ofs, m_dict_avail, m_first_call, m_has_flushed; + int m_window_bits; + mz_uint8 m_dict[TINFL_LZ_DICT_SIZE]; + tinfl_status m_last_status; +} inflate_state; + +int mz_inflateInit2(mz_streamp pStream, int window_bits) { + inflate_state *pDecomp; + if (!pStream) + return MZ_STREAM_ERROR; + if ((window_bits != MZ_DEFAULT_WINDOW_BITS) && + (-window_bits != MZ_DEFAULT_WINDOW_BITS)) + return MZ_PARAM_ERROR; + + pStream->data_type = 0; + pStream->adler = 0; + pStream->msg = NULL; + pStream->total_in = 0; + pStream->total_out = 0; + pStream->reserved = 0; + if (!pStream->zalloc) + pStream->zalloc = miniz_def_alloc_func; + if (!pStream->zfree) + pStream->zfree = miniz_def_free_func; + + pDecomp = (inflate_state *)pStream->zalloc(pStream->opaque, 1, + sizeof(inflate_state)); + if (!pDecomp) + return MZ_MEM_ERROR; + + pStream->state = (struct mz_internal_state *)pDecomp; + + tinfl_init(&pDecomp->m_decomp); + pDecomp->m_dict_ofs = 0; + pDecomp->m_dict_avail = 0; + pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT; + pDecomp->m_first_call = 1; + pDecomp->m_has_flushed = 0; + pDecomp->m_window_bits = window_bits; + + return MZ_OK; +} + +int mz_inflateInit(mz_streamp pStream) { + return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS); +} + +int mz_inflateReset(mz_streamp pStream) { + inflate_state *pDecomp; + if (!pStream) + return MZ_STREAM_ERROR; + + pStream->data_type = 0; + pStream->adler = 0; + pStream->msg = NULL; + pStream->total_in = 0; + pStream->total_out = 0; + pStream->reserved = 0; + + pDecomp = (inflate_state *)pStream->state; + + tinfl_init(&pDecomp->m_decomp); + pDecomp->m_dict_ofs = 0; + pDecomp->m_dict_avail = 0; + pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT; + pDecomp->m_first_call = 1; + pDecomp->m_has_flushed = 0; + /* pDecomp->m_window_bits = window_bits */; + + return MZ_OK; +} + +int mz_inflate(mz_streamp pStream, int flush) { + inflate_state *pState; + mz_uint n, first_call, decomp_flags = TINFL_FLAG_COMPUTE_ADLER32; + size_t in_bytes, out_bytes, orig_avail_in; + tinfl_status status; + + if ((!pStream) || (!pStream->state)) + return MZ_STREAM_ERROR; + if (flush == MZ_PARTIAL_FLUSH) + flush = MZ_SYNC_FLUSH; + if ((flush) && (flush != MZ_SYNC_FLUSH) && (flush != MZ_FINISH)) + return MZ_STREAM_ERROR; + + pState = (inflate_state *)pStream->state; + if (pState->m_window_bits > 0) + decomp_flags |= TINFL_FLAG_PARSE_ZLIB_HEADER; + orig_avail_in = pStream->avail_in; + + first_call = pState->m_first_call; + pState->m_first_call = 0; + if (pState->m_last_status < 0) + return MZ_DATA_ERROR; + + if (pState->m_has_flushed && (flush != MZ_FINISH)) + return MZ_STREAM_ERROR; + pState->m_has_flushed |= (flush == MZ_FINISH); + + if ((flush == MZ_FINISH) && (first_call)) { + /* MZ_FINISH on the first call implies that the input and output buffers are + * large enough to hold the entire compressed/decompressed file. */ + decomp_flags |= TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF; + in_bytes = pStream->avail_in; + out_bytes = pStream->avail_out; + status = tinfl_decompress(&pState->m_decomp, pStream->next_in, &in_bytes, + pStream->next_out, pStream->next_out, &out_bytes, + decomp_flags); + pState->m_last_status = status; + pStream->next_in += (mz_uint)in_bytes; + pStream->avail_in -= (mz_uint)in_bytes; + pStream->total_in += (mz_uint)in_bytes; + pStream->adler = tinfl_get_adler32(&pState->m_decomp); + pStream->next_out += (mz_uint)out_bytes; + pStream->avail_out -= (mz_uint)out_bytes; + pStream->total_out += (mz_uint)out_bytes; + + if (status < 0) + return MZ_DATA_ERROR; + else if (status != TINFL_STATUS_DONE) { + pState->m_last_status = TINFL_STATUS_FAILED; + return MZ_BUF_ERROR; + } + return MZ_STREAM_END; + } + /* flush != MZ_FINISH then we must assume there's more input. */ + if (flush != MZ_FINISH) + decomp_flags |= TINFL_FLAG_HAS_MORE_INPUT; + + if (pState->m_dict_avail) { + n = MZ_MIN(pState->m_dict_avail, pStream->avail_out); + memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n); + pStream->next_out += n; + pStream->avail_out -= n; + pStream->total_out += n; + pState->m_dict_avail -= n; + pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1); + return ((pState->m_last_status == TINFL_STATUS_DONE) && + (!pState->m_dict_avail)) + ? MZ_STREAM_END + : MZ_OK; + } + + for (;;) { + in_bytes = pStream->avail_in; + out_bytes = TINFL_LZ_DICT_SIZE - pState->m_dict_ofs; + + status = tinfl_decompress( + &pState->m_decomp, pStream->next_in, &in_bytes, pState->m_dict, + pState->m_dict + pState->m_dict_ofs, &out_bytes, decomp_flags); + pState->m_last_status = status; + + pStream->next_in += (mz_uint)in_bytes; + pStream->avail_in -= (mz_uint)in_bytes; + pStream->total_in += (mz_uint)in_bytes; + pStream->adler = tinfl_get_adler32(&pState->m_decomp); + + pState->m_dict_avail = (mz_uint)out_bytes; + + n = MZ_MIN(pState->m_dict_avail, pStream->avail_out); + memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n); + pStream->next_out += n; + pStream->avail_out -= n; + pStream->total_out += n; + pState->m_dict_avail -= n; + pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1); + + if (status < 0) + return MZ_DATA_ERROR; /* Stream is corrupted (there could be some + uncompressed data left in the output dictionary - + oh well). */ + else if ((status == TINFL_STATUS_NEEDS_MORE_INPUT) && (!orig_avail_in)) + return MZ_BUF_ERROR; /* Signal caller that we can't make forward progress + without supplying more input or by setting flush + to MZ_FINISH. */ + else if (flush == MZ_FINISH) { + /* The output buffer MUST be large to hold the remaining uncompressed data + * when flush==MZ_FINISH. */ + if (status == TINFL_STATUS_DONE) + return pState->m_dict_avail ? MZ_BUF_ERROR : MZ_STREAM_END; + /* status here must be TINFL_STATUS_HAS_MORE_OUTPUT, which means there's + * at least 1 more byte on the way. If there's no more room left in the + * output buffer then something is wrong. */ + else if (!pStream->avail_out) + return MZ_BUF_ERROR; + } else if ((status == TINFL_STATUS_DONE) || (!pStream->avail_in) || + (!pStream->avail_out) || (pState->m_dict_avail)) + break; + } + + return ((status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) + ? MZ_STREAM_END + : MZ_OK; +} + +int mz_inflateEnd(mz_streamp pStream) { + if (!pStream) + return MZ_STREAM_ERROR; + if (pStream->state) { + pStream->zfree(pStream->opaque, pStream->state); + pStream->state = NULL; + } + return MZ_OK; +} +int mz_uncompress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong *pSource_len) { + mz_stream stream; + int status; + memset(&stream, 0, sizeof(stream)); + + /* In case mz_ulong is 64-bits (argh I hate longs). */ + if ((*pSource_len | *pDest_len) > 0xFFFFFFFFU) + return MZ_PARAM_ERROR; + + stream.next_in = pSource; + stream.avail_in = (mz_uint32)*pSource_len; + stream.next_out = pDest; + stream.avail_out = (mz_uint32)*pDest_len; + + status = mz_inflateInit(&stream); + if (status != MZ_OK) + return status; + + status = mz_inflate(&stream, MZ_FINISH); + *pSource_len = *pSource_len - stream.avail_in; + if (status != MZ_STREAM_END) { + mz_inflateEnd(&stream); + return ((status == MZ_BUF_ERROR) && (!stream.avail_in)) ? MZ_DATA_ERROR + : status; + } + *pDest_len = stream.total_out; + + return mz_inflateEnd(&stream); +} + +int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len) { + return mz_uncompress2(pDest, pDest_len, pSource, &source_len); +} + +const char *mz_error(int err) { + static struct { + int m_err; + const char *m_pDesc; + } s_error_descs[] = {{MZ_OK, ""}, + {MZ_STREAM_END, "stream end"}, + {MZ_NEED_DICT, "need dictionary"}, + {MZ_ERRNO, "file error"}, + {MZ_STREAM_ERROR, "stream error"}, + {MZ_DATA_ERROR, "data error"}, + {MZ_MEM_ERROR, "out of memory"}, + {MZ_BUF_ERROR, "buf error"}, + {MZ_VERSION_ERROR, "version error"}, + {MZ_PARAM_ERROR, "parameter error"}}; + mz_uint i; + for (i = 0; i < sizeof(s_error_descs) / sizeof(s_error_descs[0]); ++i) + if (s_error_descs[i].m_err == err) + return s_error_descs[i].m_pDesc; + return NULL; +} + +#endif /*MINIZ_NO_ZLIB_APIS */ + +#ifdef __cplusplus +} +#endif + +/* + This is free and unencumbered software released into the public domain. + + Anyone is free to copy, modify, publish, use, compile, sell, or + distribute this software, either in source code form or as a compiled + binary, for any purpose, commercial or non-commercial, and by any + means. + + In jurisdictions that recognize copyright laws, the author or authors + of this software dedicate any and all copyright interest in the + software to the public domain. We make this dedication for the benefit + of the public at large and to the detriment of our heirs and + successors. We intend this dedication to be an overt act of + relinquishment in perpetuity of all present and future rights to this + software under copyright law. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR + OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + OTHER DEALINGS IN THE SOFTWARE. + + For more information, please refer to +*/ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + **************************************************************************/ + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- Low-level Compression (independent from all decompression + * API's) */ + +/* Purposely making these tables static for faster init and thread safety. */ +static const mz_uint16 s_tdefl_len_sym[256] = { + 257, 258, 259, 260, 261, 262, 263, 264, 265, 265, 266, 266, 267, 267, 268, + 268, 269, 269, 269, 269, 270, 270, 270, 270, 271, 271, 271, 271, 272, 272, + 272, 272, 273, 273, 273, 273, 273, 273, 273, 273, 274, 274, 274, 274, 274, + 274, 274, 274, 275, 275, 275, 275, 275, 275, 275, 275, 276, 276, 276, 276, + 276, 276, 276, 276, 277, 277, 277, 277, 277, 277, 277, 277, 277, 277, 277, + 277, 277, 277, 277, 277, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, + 278, 278, 278, 278, 278, 278, 279, 279, 279, 279, 279, 279, 279, 279, 279, + 279, 279, 279, 279, 279, 279, 279, 280, 280, 280, 280, 280, 280, 280, 280, + 280, 280, 280, 280, 280, 280, 280, 280, 281, 281, 281, 281, 281, 281, 281, + 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, + 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 282, 282, 282, 282, 282, + 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, + 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 283, 283, 283, + 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, + 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 284, + 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, + 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, + 285}; + +static const mz_uint8 s_tdefl_len_extra[256] = { + 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0}; + +static const mz_uint8 s_tdefl_small_dist_sym[512] = { + 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, + 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, + 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17}; + +static const mz_uint8 s_tdefl_small_dist_extra[512] = { + 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7}; + +static const mz_uint8 s_tdefl_large_dist_sym[128] = { + 0, 0, 18, 19, 20, 20, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, + 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, + 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, + 27, 27, 27, 27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, + 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, + 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, + 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29}; + +static const mz_uint8 s_tdefl_large_dist_extra[128] = { + 0, 0, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, + 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13}; + +/* Radix sorts tdefl_sym_freq[] array by 16-bit key m_key. Returns ptr to sorted + * values. */ +typedef struct { + mz_uint16 m_key, m_sym_index; +} tdefl_sym_freq; +static tdefl_sym_freq *tdefl_radix_sort_syms(mz_uint num_syms, + tdefl_sym_freq *pSyms0, + tdefl_sym_freq *pSyms1) { + mz_uint32 total_passes = 2, pass_shift, pass, i, hist[256 * 2]; + tdefl_sym_freq *pCur_syms = pSyms0, *pNew_syms = pSyms1; + MZ_CLEAR_OBJ(hist); + for (i = 0; i < num_syms; i++) { + mz_uint freq = pSyms0[i].m_key; + hist[freq & 0xFF]++; + hist[256 + ((freq >> 8) & 0xFF)]++; + } + while ((total_passes > 1) && (num_syms == hist[(total_passes - 1) * 256])) + total_passes--; + for (pass_shift = 0, pass = 0; pass < total_passes; pass++, pass_shift += 8) { + const mz_uint32 *pHist = &hist[pass << 8]; + mz_uint offsets[256], cur_ofs = 0; + for (i = 0; i < 256; i++) { + offsets[i] = cur_ofs; + cur_ofs += pHist[i]; + } + for (i = 0; i < num_syms; i++) + pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & 0xFF]++] = + pCur_syms[i]; + { + tdefl_sym_freq *t = pCur_syms; + pCur_syms = pNew_syms; + pNew_syms = t; + } + } + return pCur_syms; +} + +/* tdefl_calculate_minimum_redundancy() originally written by: Alistair Moffat, + * alistair@cs.mu.oz.au, Jyrki Katajainen, jyrki@diku.dk, November 1996. */ +static void tdefl_calculate_minimum_redundancy(tdefl_sym_freq *A, int n) { + int root, leaf, next, avbl, used, dpth; + if (n == 0) + return; + else if (n == 1) { + A[0].m_key = 1; + return; + } + A[0].m_key += A[1].m_key; + root = 0; + leaf = 2; + for (next = 1; next < n - 1; next++) { + if (leaf >= n || A[root].m_key < A[leaf].m_key) { + A[next].m_key = A[root].m_key; + A[root++].m_key = (mz_uint16)next; + } else + A[next].m_key = A[leaf++].m_key; + if (leaf >= n || (root < next && A[root].m_key < A[leaf].m_key)) { + A[next].m_key = (mz_uint16)(A[next].m_key + A[root].m_key); + A[root++].m_key = (mz_uint16)next; + } else + A[next].m_key = (mz_uint16)(A[next].m_key + A[leaf++].m_key); + } + A[n - 2].m_key = 0; + for (next = n - 3; next >= 0; next--) + A[next].m_key = A[A[next].m_key].m_key + 1; + avbl = 1; + used = dpth = 0; + root = n - 2; + next = n - 1; + while (avbl > 0) { + while (root >= 0 && (int)A[root].m_key == dpth) { + used++; + root--; + } + while (avbl > used) { + A[next--].m_key = (mz_uint16)(dpth); + avbl--; + } + avbl = 2 * used; + dpth++; + used = 0; + } +} + +/* Limits canonical Huffman code table's max code size. */ +enum { TDEFL_MAX_SUPPORTED_HUFF_CODESIZE = 32 }; +static void tdefl_huffman_enforce_max_code_size(int *pNum_codes, + int code_list_len, + int max_code_size) { + int i; + mz_uint32 total = 0; + if (code_list_len <= 1) + return; + for (i = max_code_size + 1; i <= TDEFL_MAX_SUPPORTED_HUFF_CODESIZE; i++) + pNum_codes[max_code_size] += pNum_codes[i]; + for (i = max_code_size; i > 0; i--) + total += (((mz_uint32)pNum_codes[i]) << (max_code_size - i)); + while (total != (1UL << max_code_size)) { + pNum_codes[max_code_size]--; + for (i = max_code_size - 1; i > 0; i--) + if (pNum_codes[i]) { + pNum_codes[i]--; + pNum_codes[i + 1] += 2; + break; + } + total--; + } +} + +static void tdefl_optimize_huffman_table(tdefl_compressor *d, int table_num, + int table_len, int code_size_limit, + int static_table) { + int i, j, l, num_codes[1 + TDEFL_MAX_SUPPORTED_HUFF_CODESIZE]; + mz_uint next_code[TDEFL_MAX_SUPPORTED_HUFF_CODESIZE + 1]; + MZ_CLEAR_OBJ(num_codes); + if (static_table) { + for (i = 0; i < table_len; i++) + num_codes[d->m_huff_code_sizes[table_num][i]]++; + } else { + tdefl_sym_freq syms0[TDEFL_MAX_HUFF_SYMBOLS], syms1[TDEFL_MAX_HUFF_SYMBOLS], + *pSyms; + int num_used_syms = 0; + const mz_uint16 *pSym_count = &d->m_huff_count[table_num][0]; + for (i = 0; i < table_len; i++) + if (pSym_count[i]) { + syms0[num_used_syms].m_key = (mz_uint16)pSym_count[i]; + syms0[num_used_syms++].m_sym_index = (mz_uint16)i; + } + + pSyms = tdefl_radix_sort_syms(num_used_syms, syms0, syms1); + tdefl_calculate_minimum_redundancy(pSyms, num_used_syms); + + for (i = 0; i < num_used_syms; i++) + num_codes[pSyms[i].m_key]++; + + tdefl_huffman_enforce_max_code_size(num_codes, num_used_syms, + code_size_limit); + + MZ_CLEAR_OBJ(d->m_huff_code_sizes[table_num]); + MZ_CLEAR_OBJ(d->m_huff_codes[table_num]); + for (i = 1, j = num_used_syms; i <= code_size_limit; i++) + for (l = num_codes[i]; l > 0; l--) + d->m_huff_code_sizes[table_num][pSyms[--j].m_sym_index] = (mz_uint8)(i); + } + + next_code[1] = 0; + for (j = 0, i = 2; i <= code_size_limit; i++) + next_code[i] = j = ((j + num_codes[i - 1]) << 1); + + for (i = 0; i < table_len; i++) { + mz_uint rev_code = 0, code, code_size; + if ((code_size = d->m_huff_code_sizes[table_num][i]) == 0) + continue; + code = next_code[code_size]++; + for (l = code_size; l > 0; l--, code >>= 1) + rev_code = (rev_code << 1) | (code & 1); + d->m_huff_codes[table_num][i] = (mz_uint16)rev_code; + } +} + +#define TDEFL_PUT_BITS(b, l) \ + do { \ + mz_uint bits = b; \ + mz_uint len = l; \ + MZ_ASSERT(bits <= ((1U << len) - 1U)); \ + d->m_bit_buffer |= (bits << d->m_bits_in); \ + d->m_bits_in += len; \ + while (d->m_bits_in >= 8) { \ + if (d->m_pOutput_buf < d->m_pOutput_buf_end) \ + *d->m_pOutput_buf++ = (mz_uint8)(d->m_bit_buffer); \ + d->m_bit_buffer >>= 8; \ + d->m_bits_in -= 8; \ + } \ + } \ + MZ_MACRO_END + +#define TDEFL_RLE_PREV_CODE_SIZE() \ + { \ + if (rle_repeat_count) { \ + if (rle_repeat_count < 3) { \ + d->m_huff_count[2][prev_code_size] = \ + (mz_uint16)(d->m_huff_count[2][prev_code_size] + \ + rle_repeat_count); \ + while (rle_repeat_count--) \ + packed_code_sizes[num_packed_code_sizes++] = prev_code_size; \ + } else { \ + d->m_huff_count[2][16] = (mz_uint16)(d->m_huff_count[2][16] + 1); \ + packed_code_sizes[num_packed_code_sizes++] = 16; \ + packed_code_sizes[num_packed_code_sizes++] = \ + (mz_uint8)(rle_repeat_count - 3); \ + } \ + rle_repeat_count = 0; \ + } \ + } + +#define TDEFL_RLE_ZERO_CODE_SIZE() \ + { \ + if (rle_z_count) { \ + if (rle_z_count < 3) { \ + d->m_huff_count[2][0] = \ + (mz_uint16)(d->m_huff_count[2][0] + rle_z_count); \ + while (rle_z_count--) \ + packed_code_sizes[num_packed_code_sizes++] = 0; \ + } else if (rle_z_count <= 10) { \ + d->m_huff_count[2][17] = (mz_uint16)(d->m_huff_count[2][17] + 1); \ + packed_code_sizes[num_packed_code_sizes++] = 17; \ + packed_code_sizes[num_packed_code_sizes++] = \ + (mz_uint8)(rle_z_count - 3); \ + } else { \ + d->m_huff_count[2][18] = (mz_uint16)(d->m_huff_count[2][18] + 1); \ + packed_code_sizes[num_packed_code_sizes++] = 18; \ + packed_code_sizes[num_packed_code_sizes++] = \ + (mz_uint8)(rle_z_count - 11); \ + } \ + rle_z_count = 0; \ + } \ + } + +static mz_uint8 s_tdefl_packed_code_size_syms_swizzle[] = { + 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; + +static void tdefl_start_dynamic_block(tdefl_compressor *d) { + int num_lit_codes, num_dist_codes, num_bit_lengths; + mz_uint i, total_code_sizes_to_pack, num_packed_code_sizes, rle_z_count, + rle_repeat_count, packed_code_sizes_index; + mz_uint8 + code_sizes_to_pack[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], + packed_code_sizes[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], + prev_code_size = 0xFF; + + d->m_huff_count[0][256] = 1; + + tdefl_optimize_huffman_table(d, 0, TDEFL_MAX_HUFF_SYMBOLS_0, 15, MZ_FALSE); + tdefl_optimize_huffman_table(d, 1, TDEFL_MAX_HUFF_SYMBOLS_1, 15, MZ_FALSE); + + for (num_lit_codes = 286; num_lit_codes > 257; num_lit_codes--) + if (d->m_huff_code_sizes[0][num_lit_codes - 1]) + break; + for (num_dist_codes = 30; num_dist_codes > 1; num_dist_codes--) + if (d->m_huff_code_sizes[1][num_dist_codes - 1]) + break; + + memcpy(code_sizes_to_pack, &d->m_huff_code_sizes[0][0], num_lit_codes); + memcpy(code_sizes_to_pack + num_lit_codes, &d->m_huff_code_sizes[1][0], + num_dist_codes); + total_code_sizes_to_pack = num_lit_codes + num_dist_codes; + num_packed_code_sizes = 0; + rle_z_count = 0; + rle_repeat_count = 0; + + memset(&d->m_huff_count[2][0], 0, + sizeof(d->m_huff_count[2][0]) * TDEFL_MAX_HUFF_SYMBOLS_2); + for (i = 0; i < total_code_sizes_to_pack; i++) { + mz_uint8 code_size = code_sizes_to_pack[i]; + if (!code_size) { + TDEFL_RLE_PREV_CODE_SIZE(); + if (++rle_z_count == 138) { + TDEFL_RLE_ZERO_CODE_SIZE(); + } + } else { + TDEFL_RLE_ZERO_CODE_SIZE(); + if (code_size != prev_code_size) { + TDEFL_RLE_PREV_CODE_SIZE(); + d->m_huff_count[2][code_size] = + (mz_uint16)(d->m_huff_count[2][code_size] + 1); + packed_code_sizes[num_packed_code_sizes++] = code_size; + } else if (++rle_repeat_count == 6) { + TDEFL_RLE_PREV_CODE_SIZE(); + } + } + prev_code_size = code_size; + } + if (rle_repeat_count) { + TDEFL_RLE_PREV_CODE_SIZE(); + } else { + TDEFL_RLE_ZERO_CODE_SIZE(); + } + + tdefl_optimize_huffman_table(d, 2, TDEFL_MAX_HUFF_SYMBOLS_2, 7, MZ_FALSE); + + TDEFL_PUT_BITS(2, 2); + + TDEFL_PUT_BITS(num_lit_codes - 257, 5); + TDEFL_PUT_BITS(num_dist_codes - 1, 5); + + for (num_bit_lengths = 18; num_bit_lengths >= 0; num_bit_lengths--) + if (d->m_huff_code_sizes + [2][s_tdefl_packed_code_size_syms_swizzle[num_bit_lengths]]) + break; + num_bit_lengths = MZ_MAX(4, (num_bit_lengths + 1)); + TDEFL_PUT_BITS(num_bit_lengths - 4, 4); + for (i = 0; (int)i < num_bit_lengths; i++) + TDEFL_PUT_BITS( + d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[i]], 3); + + for (packed_code_sizes_index = 0; + packed_code_sizes_index < num_packed_code_sizes;) { + mz_uint code = packed_code_sizes[packed_code_sizes_index++]; + MZ_ASSERT(code < TDEFL_MAX_HUFF_SYMBOLS_2); + TDEFL_PUT_BITS(d->m_huff_codes[2][code], d->m_huff_code_sizes[2][code]); + if (code >= 16) + TDEFL_PUT_BITS(packed_code_sizes[packed_code_sizes_index++], + "\02\03\07"[code - 16]); + } +} + +static void tdefl_start_static_block(tdefl_compressor *d) { + mz_uint i; + mz_uint8 *p = &d->m_huff_code_sizes[0][0]; + + for (i = 0; i <= 143; ++i) + *p++ = 8; + for (; i <= 255; ++i) + *p++ = 9; + for (; i <= 279; ++i) + *p++ = 7; + for (; i <= 287; ++i) + *p++ = 8; + + memset(d->m_huff_code_sizes[1], 5, 32); + + tdefl_optimize_huffman_table(d, 0, 288, 15, MZ_TRUE); + tdefl_optimize_huffman_table(d, 1, 32, 15, MZ_TRUE); + + TDEFL_PUT_BITS(1, 2); +} + +static const mz_uint mz_bitmasks[17] = { + 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, + 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF}; + +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && \ + MINIZ_HAS_64BIT_REGISTERS +static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d) { + mz_uint flags; + mz_uint8 *pLZ_codes; + mz_uint8 *pOutput_buf = d->m_pOutput_buf; + mz_uint8 *pLZ_code_buf_end = d->m_pLZ_code_buf; + mz_uint64 bit_buffer = d->m_bit_buffer; + mz_uint bits_in = d->m_bits_in; + +#define TDEFL_PUT_BITS_FAST(b, l) \ + { \ + bit_buffer |= (((mz_uint64)(b)) << bits_in); \ + bits_in += (l); \ + } + + flags = 1; + for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < pLZ_code_buf_end; + flags >>= 1) { + if (flags == 1) + flags = *pLZ_codes++ | 0x100; + + if (flags & 1) { + mz_uint s0, s1, n0, n1, sym, num_extra_bits; + mz_uint match_len = pLZ_codes[0], + match_dist = *(const mz_uint16 *)(pLZ_codes + 1); + pLZ_codes += 3; + + MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], + d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS_FAST(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], + s_tdefl_len_extra[match_len]); + + /* This sequence coaxes MSVC into using cmov's vs. jmp's. */ + s0 = s_tdefl_small_dist_sym[match_dist & 511]; + n0 = s_tdefl_small_dist_extra[match_dist & 511]; + s1 = s_tdefl_large_dist_sym[match_dist >> 8]; + n1 = s_tdefl_large_dist_extra[match_dist >> 8]; + sym = (match_dist < 512) ? s0 : s1; + num_extra_bits = (match_dist < 512) ? n0 : n1; + + MZ_ASSERT(d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[1][sym], + d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS_FAST(match_dist & mz_bitmasks[num_extra_bits], + num_extra_bits); + } else { + mz_uint lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + + if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) { + flags >>= 1; + lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + + if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) { + flags >>= 1; + lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + } + } + } + + if (pOutput_buf >= d->m_pOutput_buf_end) + return MZ_FALSE; + + *(mz_uint64 *)pOutput_buf = bit_buffer; + pOutput_buf += (bits_in >> 3); + bit_buffer >>= (bits_in & ~7); + bits_in &= 7; + } + +#undef TDEFL_PUT_BITS_FAST + + d->m_pOutput_buf = pOutput_buf; + d->m_bits_in = 0; + d->m_bit_buffer = 0; + + while (bits_in) { + mz_uint32 n = MZ_MIN(bits_in, 16); + TDEFL_PUT_BITS((mz_uint)bit_buffer & mz_bitmasks[n], n); + bit_buffer >>= n; + bits_in -= n; + } + + TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]); + + return (d->m_pOutput_buf < d->m_pOutput_buf_end); +} +#else +static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d) { + mz_uint flags; + mz_uint8 *pLZ_codes; + + flags = 1; + for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < d->m_pLZ_code_buf; + flags >>= 1) { + if (flags == 1) + flags = *pLZ_codes++ | 0x100; + if (flags & 1) { + mz_uint sym, num_extra_bits; + mz_uint match_len = pLZ_codes[0], + match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8)); + pLZ_codes += 3; + + MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], + d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], + s_tdefl_len_extra[match_len]); + + if (match_dist < 512) { + sym = s_tdefl_small_dist_sym[match_dist]; + num_extra_bits = s_tdefl_small_dist_extra[match_dist]; + } else { + sym = s_tdefl_large_dist_sym[match_dist >> 8]; + num_extra_bits = s_tdefl_large_dist_extra[match_dist >> 8]; + } + MZ_ASSERT(d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits); + } else { + mz_uint lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]); + } + } + + TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]); + + return (d->m_pOutput_buf < d->m_pOutput_buf_end); +} +#endif /* MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && \ + MINIZ_HAS_64BIT_REGISTERS */ + +static mz_bool tdefl_compress_block(tdefl_compressor *d, mz_bool static_block) { + if (static_block) + tdefl_start_static_block(d); + else + tdefl_start_dynamic_block(d); + return tdefl_compress_lz_codes(d); +} + +static int tdefl_flush_block(tdefl_compressor *d, int flush) { + mz_uint saved_bit_buf, saved_bits_in; + mz_uint8 *pSaved_output_buf; + mz_bool comp_block_succeeded = MZ_FALSE; + int n, use_raw_block = + ((d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS) != 0) && + (d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size; + mz_uint8 *pOutput_buf_start = + ((d->m_pPut_buf_func == NULL) && + ((*d->m_pOut_buf_size - d->m_out_buf_ofs) >= TDEFL_OUT_BUF_SIZE)) + ? ((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs) + : d->m_output_buf; + + d->m_pOutput_buf = pOutput_buf_start; + d->m_pOutput_buf_end = d->m_pOutput_buf + TDEFL_OUT_BUF_SIZE - 16; + + MZ_ASSERT(!d->m_output_flush_remaining); + d->m_output_flush_ofs = 0; + d->m_output_flush_remaining = 0; + + *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> d->m_num_flags_left); + d->m_pLZ_code_buf -= (d->m_num_flags_left == 8); + + if ((d->m_flags & TDEFL_WRITE_ZLIB_HEADER) && (!d->m_block_index)) { + TDEFL_PUT_BITS(0x78, 8); + TDEFL_PUT_BITS(0x01, 8); + } + + TDEFL_PUT_BITS(flush == TDEFL_FINISH, 1); + + pSaved_output_buf = d->m_pOutput_buf; + saved_bit_buf = d->m_bit_buffer; + saved_bits_in = d->m_bits_in; + + if (!use_raw_block) + comp_block_succeeded = + tdefl_compress_block(d, (d->m_flags & TDEFL_FORCE_ALL_STATIC_BLOCKS) || + (d->m_total_lz_bytes < 48)); + + /* If the block gets expanded, forget the current contents of the output + * buffer and send a raw block instead. */ + if (((use_raw_block) || + ((d->m_total_lz_bytes) && ((d->m_pOutput_buf - pSaved_output_buf + 1U) >= + d->m_total_lz_bytes))) && + ((d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size)) { + mz_uint i; + d->m_pOutput_buf = pSaved_output_buf; + d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in; + TDEFL_PUT_BITS(0, 2); + if (d->m_bits_in) { + TDEFL_PUT_BITS(0, 8 - d->m_bits_in); + } + for (i = 2; i; --i, d->m_total_lz_bytes ^= 0xFFFF) { + TDEFL_PUT_BITS(d->m_total_lz_bytes & 0xFFFF, 16); + } + for (i = 0; i < d->m_total_lz_bytes; ++i) { + TDEFL_PUT_BITS( + d->m_dict[(d->m_lz_code_buf_dict_pos + i) & TDEFL_LZ_DICT_SIZE_MASK], + 8); + } + } + /* Check for the extremely unlikely (if not impossible) case of the compressed + block not fitting into the output buffer when using dynamic codes. */ + else if (!comp_block_succeeded) { + d->m_pOutput_buf = pSaved_output_buf; + d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in; + tdefl_compress_block(d, MZ_TRUE); + } + + if (flush) { + if (flush == TDEFL_FINISH) { + if (d->m_bits_in) { + TDEFL_PUT_BITS(0, 8 - d->m_bits_in); + } + if (d->m_flags & TDEFL_WRITE_ZLIB_HEADER) { + mz_uint i, a = d->m_adler32; + for (i = 0; i < 4; i++) { + TDEFL_PUT_BITS((a >> 24) & 0xFF, 8); + a <<= 8; + } + } + } else { + mz_uint i, z = 0; + TDEFL_PUT_BITS(0, 3); + if (d->m_bits_in) { + TDEFL_PUT_BITS(0, 8 - d->m_bits_in); + } + for (i = 2; i; --i, z ^= 0xFFFF) { + TDEFL_PUT_BITS(z & 0xFFFF, 16); + } + } + } + + MZ_ASSERT(d->m_pOutput_buf < d->m_pOutput_buf_end); + + memset(&d->m_huff_count[0][0], 0, + sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0); + memset(&d->m_huff_count[1][0], 0, + sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1); + + d->m_pLZ_code_buf = d->m_lz_code_buf + 1; + d->m_pLZ_flags = d->m_lz_code_buf; + d->m_num_flags_left = 8; + d->m_lz_code_buf_dict_pos += d->m_total_lz_bytes; + d->m_total_lz_bytes = 0; + d->m_block_index++; + + if ((n = (int)(d->m_pOutput_buf - pOutput_buf_start)) != 0) { + if (d->m_pPut_buf_func) { + *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf; + if (!(*d->m_pPut_buf_func)(d->m_output_buf, n, d->m_pPut_buf_user)) + return (d->m_prev_return_status = TDEFL_STATUS_PUT_BUF_FAILED); + } else if (pOutput_buf_start == d->m_output_buf) { + int bytes_to_copy = (int)MZ_MIN( + (size_t)n, (size_t)(*d->m_pOut_buf_size - d->m_out_buf_ofs)); + memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf, + bytes_to_copy); + d->m_out_buf_ofs += bytes_to_copy; + if ((n -= bytes_to_copy) != 0) { + d->m_output_flush_ofs = bytes_to_copy; + d->m_output_flush_remaining = n; + } + } else { + d->m_out_buf_ofs += n; + } + } + + return d->m_output_flush_remaining; +} + +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES +#ifdef MINIZ_UNALIGNED_USE_MEMCPY +static mz_uint16 TDEFL_READ_UNALIGNED_WORD(const mz_uint8 *p) { + mz_uint16 ret; + memcpy(&ret, p, sizeof(mz_uint16)); + return ret; +} +static mz_uint16 TDEFL_READ_UNALIGNED_WORD2(const mz_uint16 *p) { + mz_uint16 ret; + memcpy(&ret, p, sizeof(mz_uint16)); + return ret; +} +#else +#define TDEFL_READ_UNALIGNED_WORD(p) *(const mz_uint16 *)(p) +#define TDEFL_READ_UNALIGNED_WORD2(p) *(const mz_uint16 *)(p) +#endif +static MZ_FORCEINLINE void +tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, + mz_uint max_match_len, mz_uint *pMatch_dist, + mz_uint *pMatch_len) { + mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, + match_len = *pMatch_len, probe_pos = pos, next_probe_pos, + probe_len; + mz_uint num_probes_left = d->m_max_probes[match_len >= 32]; + const mz_uint16 *s = (const mz_uint16 *)(d->m_dict + pos), *p, *q; + mz_uint16 c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]), + s01 = TDEFL_READ_UNALIGNED_WORD2(s); + MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); + if (max_match_len <= match_len) + return; + for (;;) { + for (;;) { + if (--num_probes_left == 0) + return; +#define TDEFL_PROBE \ + next_probe_pos = d->m_next[probe_pos]; \ + if ((!next_probe_pos) || \ + ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) \ + return; \ + probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \ + if (TDEFL_READ_UNALIGNED_WORD(&d->m_dict[probe_pos + match_len - 1]) == c01) \ + break; + TDEFL_PROBE; + TDEFL_PROBE; + TDEFL_PROBE; + } + if (!dist) + break; + q = (const mz_uint16 *)(d->m_dict + probe_pos); + if (TDEFL_READ_UNALIGNED_WORD2(q) != s01) + continue; + p = s; + probe_len = 32; + do { + } while ( + (TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == TDEFL_READ_UNALIGNED_WORD2(++q)) && + (--probe_len > 0)); + if (!probe_len) { + *pMatch_dist = dist; + *pMatch_len = MZ_MIN(max_match_len, (mz_uint)TDEFL_MAX_MATCH_LEN); + break; + } else if ((probe_len = ((mz_uint)(p - s) * 2) + + (mz_uint)(*(const mz_uint8 *)p == + *(const mz_uint8 *)q)) > match_len) { + *pMatch_dist = dist; + if ((*pMatch_len = match_len = MZ_MIN(max_match_len, probe_len)) == + max_match_len) + break; + c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]); + } + } +} +#else +static MZ_FORCEINLINE void +tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, + mz_uint max_match_len, mz_uint *pMatch_dist, + mz_uint *pMatch_len) { + mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, + match_len = *pMatch_len, probe_pos = pos, next_probe_pos, + probe_len; + mz_uint num_probes_left = d->m_max_probes[match_len >= 32]; + const mz_uint8 *s = d->m_dict + pos, *p, *q; + mz_uint8 c0 = d->m_dict[pos + match_len], c1 = d->m_dict[pos + match_len - 1]; + MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); + if (max_match_len <= match_len) + return; + for (;;) { + for (;;) { + if (--num_probes_left == 0) + return; +#define TDEFL_PROBE \ + next_probe_pos = d->m_next[probe_pos]; \ + if ((!next_probe_pos) || \ + ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) \ + return; \ + probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \ + if ((d->m_dict[probe_pos + match_len] == c0) && \ + (d->m_dict[probe_pos + match_len - 1] == c1)) \ + break; + TDEFL_PROBE; + TDEFL_PROBE; + TDEFL_PROBE; + } + if (!dist) + break; + p = s; + q = d->m_dict + probe_pos; + for (probe_len = 0; probe_len < max_match_len; probe_len++) + if (*p++ != *q++) + break; + if (probe_len > match_len) { + *pMatch_dist = dist; + if ((*pMatch_len = match_len = probe_len) == max_match_len) + return; + c0 = d->m_dict[pos + match_len]; + c1 = d->m_dict[pos + match_len - 1]; + } + } +} +#endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES */ + +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN +#ifdef MINIZ_UNALIGNED_USE_MEMCPY +static mz_uint32 TDEFL_READ_UNALIGNED_WORD32(const mz_uint8 *p) { + mz_uint32 ret; + memcpy(&ret, p, sizeof(mz_uint32)); + return ret; +} +#else +#define TDEFL_READ_UNALIGNED_WORD32(p) *(const mz_uint32 *)(p) +#endif +static mz_bool tdefl_compress_fast(tdefl_compressor *d) { + /* Faster, minimally featured LZRW1-style match+parse loop with better + * register utilization. Intended for applications where raw throughput is + * valued more highly than ratio. */ + mz_uint lookahead_pos = d->m_lookahead_pos, + lookahead_size = d->m_lookahead_size, dict_size = d->m_dict_size, + total_lz_bytes = d->m_total_lz_bytes, + num_flags_left = d->m_num_flags_left; + mz_uint8 *pLZ_code_buf = d->m_pLZ_code_buf, *pLZ_flags = d->m_pLZ_flags; + mz_uint cur_pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK; + + while ((d->m_src_buf_left) || ((d->m_flush) && (lookahead_size))) { + const mz_uint TDEFL_COMP_FAST_LOOKAHEAD_SIZE = 4096; + mz_uint dst_pos = + (lookahead_pos + lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK; + mz_uint num_bytes_to_process = (mz_uint)MZ_MIN( + d->m_src_buf_left, TDEFL_COMP_FAST_LOOKAHEAD_SIZE - lookahead_size); + d->m_src_buf_left -= num_bytes_to_process; + lookahead_size += num_bytes_to_process; + + while (num_bytes_to_process) { + mz_uint32 n = MZ_MIN(TDEFL_LZ_DICT_SIZE - dst_pos, num_bytes_to_process); + memcpy(d->m_dict + dst_pos, d->m_pSrc, n); + if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) + memcpy(d->m_dict + TDEFL_LZ_DICT_SIZE + dst_pos, d->m_pSrc, + MZ_MIN(n, (TDEFL_MAX_MATCH_LEN - 1) - dst_pos)); + d->m_pSrc += n; + dst_pos = (dst_pos + n) & TDEFL_LZ_DICT_SIZE_MASK; + num_bytes_to_process -= n; + } + + dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - lookahead_size, dict_size); + if ((!d->m_flush) && (lookahead_size < TDEFL_COMP_FAST_LOOKAHEAD_SIZE)) + break; + + while (lookahead_size >= 4) { + mz_uint cur_match_dist, cur_match_len = 1; + mz_uint8 *pCur_dict = d->m_dict + cur_pos; + mz_uint first_trigram = TDEFL_READ_UNALIGNED_WORD32(pCur_dict) & 0xFFFFFF; + mz_uint hash = + (first_trigram ^ (first_trigram >> (24 - (TDEFL_LZ_HASH_BITS - 8)))) & + TDEFL_LEVEL1_HASH_SIZE_MASK; + mz_uint probe_pos = d->m_hash[hash]; + d->m_hash[hash] = (mz_uint16)lookahead_pos; + + if (((cur_match_dist = (mz_uint16)(lookahead_pos - probe_pos)) <= + dict_size) && + ((TDEFL_READ_UNALIGNED_WORD32( + d->m_dict + (probe_pos &= TDEFL_LZ_DICT_SIZE_MASK)) & + 0xFFFFFF) == first_trigram)) { + const mz_uint16 *p = (const mz_uint16 *)pCur_dict; + const mz_uint16 *q = (const mz_uint16 *)(d->m_dict + probe_pos); + mz_uint32 probe_len = 32; + do { + } while ((TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (--probe_len > 0)); + cur_match_len = ((mz_uint)(p - (const mz_uint16 *)pCur_dict) * 2) + + (mz_uint)(*(const mz_uint8 *)p == *(const mz_uint8 *)q); + if (!probe_len) + cur_match_len = cur_match_dist ? TDEFL_MAX_MATCH_LEN : 0; + + if ((cur_match_len < TDEFL_MIN_MATCH_LEN) || + ((cur_match_len == TDEFL_MIN_MATCH_LEN) && + (cur_match_dist >= 8U * 1024U))) { + cur_match_len = 1; + *pLZ_code_buf++ = (mz_uint8)first_trigram; + *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1); + d->m_huff_count[0][(mz_uint8)first_trigram]++; + } else { + mz_uint32 s0, s1; + cur_match_len = MZ_MIN(cur_match_len, lookahead_size); + + MZ_ASSERT((cur_match_len >= TDEFL_MIN_MATCH_LEN) && + (cur_match_dist >= 1) && + (cur_match_dist <= TDEFL_LZ_DICT_SIZE)); + + cur_match_dist--; + + pLZ_code_buf[0] = (mz_uint8)(cur_match_len - TDEFL_MIN_MATCH_LEN); +#ifdef MINIZ_UNALIGNED_USE_MEMCPY + memcpy(&pLZ_code_buf[1], &cur_match_dist, sizeof(cur_match_dist)); +#else + *(mz_uint16 *)(&pLZ_code_buf[1]) = (mz_uint16)cur_match_dist; +#endif + pLZ_code_buf += 3; + *pLZ_flags = (mz_uint8)((*pLZ_flags >> 1) | 0x80); + + s0 = s_tdefl_small_dist_sym[cur_match_dist & 511]; + s1 = s_tdefl_large_dist_sym[cur_match_dist >> 8]; + d->m_huff_count[1][(cur_match_dist < 512) ? s0 : s1]++; + + d->m_huff_count[0][s_tdefl_len_sym[cur_match_len - + TDEFL_MIN_MATCH_LEN]]++; + } + } else { + *pLZ_code_buf++ = (mz_uint8)first_trigram; + *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1); + d->m_huff_count[0][(mz_uint8)first_trigram]++; + } + + if (--num_flags_left == 0) { + num_flags_left = 8; + pLZ_flags = pLZ_code_buf++; + } + + total_lz_bytes += cur_match_len; + lookahead_pos += cur_match_len; + dict_size = + MZ_MIN(dict_size + cur_match_len, (mz_uint)TDEFL_LZ_DICT_SIZE); + cur_pos = (cur_pos + cur_match_len) & TDEFL_LZ_DICT_SIZE_MASK; + MZ_ASSERT(lookahead_size >= cur_match_len); + lookahead_size -= cur_match_len; + + if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) { + int n; + d->m_lookahead_pos = lookahead_pos; + d->m_lookahead_size = lookahead_size; + d->m_dict_size = dict_size; + d->m_total_lz_bytes = total_lz_bytes; + d->m_pLZ_code_buf = pLZ_code_buf; + d->m_pLZ_flags = pLZ_flags; + d->m_num_flags_left = num_flags_left; + if ((n = tdefl_flush_block(d, 0)) != 0) + return (n < 0) ? MZ_FALSE : MZ_TRUE; + total_lz_bytes = d->m_total_lz_bytes; + pLZ_code_buf = d->m_pLZ_code_buf; + pLZ_flags = d->m_pLZ_flags; + num_flags_left = d->m_num_flags_left; + } + } + + while (lookahead_size) { + mz_uint8 lit = d->m_dict[cur_pos]; + + total_lz_bytes++; + *pLZ_code_buf++ = lit; + *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1); + if (--num_flags_left == 0) { + num_flags_left = 8; + pLZ_flags = pLZ_code_buf++; + } + + d->m_huff_count[0][lit]++; + + lookahead_pos++; + dict_size = MZ_MIN(dict_size + 1, (mz_uint)TDEFL_LZ_DICT_SIZE); + cur_pos = (cur_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; + lookahead_size--; + + if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) { + int n; + d->m_lookahead_pos = lookahead_pos; + d->m_lookahead_size = lookahead_size; + d->m_dict_size = dict_size; + d->m_total_lz_bytes = total_lz_bytes; + d->m_pLZ_code_buf = pLZ_code_buf; + d->m_pLZ_flags = pLZ_flags; + d->m_num_flags_left = num_flags_left; + if ((n = tdefl_flush_block(d, 0)) != 0) + return (n < 0) ? MZ_FALSE : MZ_TRUE; + total_lz_bytes = d->m_total_lz_bytes; + pLZ_code_buf = d->m_pLZ_code_buf; + pLZ_flags = d->m_pLZ_flags; + num_flags_left = d->m_num_flags_left; + } + } + } + + d->m_lookahead_pos = lookahead_pos; + d->m_lookahead_size = lookahead_size; + d->m_dict_size = dict_size; + d->m_total_lz_bytes = total_lz_bytes; + d->m_pLZ_code_buf = pLZ_code_buf; + d->m_pLZ_flags = pLZ_flags; + d->m_num_flags_left = num_flags_left; + return MZ_TRUE; +} +#endif /* MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN */ + +static MZ_FORCEINLINE void tdefl_record_literal(tdefl_compressor *d, + mz_uint8 lit) { + d->m_total_lz_bytes++; + *d->m_pLZ_code_buf++ = lit; + *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> 1); + if (--d->m_num_flags_left == 0) { + d->m_num_flags_left = 8; + d->m_pLZ_flags = d->m_pLZ_code_buf++; + } + d->m_huff_count[0][lit]++; +} + +static MZ_FORCEINLINE void +tdefl_record_match(tdefl_compressor *d, mz_uint match_len, mz_uint match_dist) { + mz_uint32 s0, s1; + + MZ_ASSERT((match_len >= TDEFL_MIN_MATCH_LEN) && (match_dist >= 1) && + (match_dist <= TDEFL_LZ_DICT_SIZE)); + + d->m_total_lz_bytes += match_len; + + d->m_pLZ_code_buf[0] = (mz_uint8)(match_len - TDEFL_MIN_MATCH_LEN); + + match_dist -= 1; + d->m_pLZ_code_buf[1] = (mz_uint8)(match_dist & 0xFF); + d->m_pLZ_code_buf[2] = (mz_uint8)(match_dist >> 8); + d->m_pLZ_code_buf += 3; + + *d->m_pLZ_flags = (mz_uint8)((*d->m_pLZ_flags >> 1) | 0x80); + if (--d->m_num_flags_left == 0) { + d->m_num_flags_left = 8; + d->m_pLZ_flags = d->m_pLZ_code_buf++; + } + + s0 = s_tdefl_small_dist_sym[match_dist & 511]; + s1 = s_tdefl_large_dist_sym[(match_dist >> 8) & 127]; + d->m_huff_count[1][(match_dist < 512) ? s0 : s1]++; + d->m_huff_count[0][s_tdefl_len_sym[match_len - TDEFL_MIN_MATCH_LEN]]++; +} + +static mz_bool tdefl_compress_normal(tdefl_compressor *d) { + const mz_uint8 *pSrc = d->m_pSrc; + size_t src_buf_left = d->m_src_buf_left; + tdefl_flush flush = d->m_flush; + + while ((src_buf_left) || ((flush) && (d->m_lookahead_size))) { + mz_uint len_to_move, cur_match_dist, cur_match_len, cur_pos; + /* Update dictionary and hash chains. Keeps the lookahead size equal to + * TDEFL_MAX_MATCH_LEN. */ + if ((d->m_lookahead_size + d->m_dict_size) >= (TDEFL_MIN_MATCH_LEN - 1)) { + mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & + TDEFL_LZ_DICT_SIZE_MASK, + ins_pos = d->m_lookahead_pos + d->m_lookahead_size - 2; + mz_uint hash = (d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] + << TDEFL_LZ_HASH_SHIFT) ^ + d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK]; + mz_uint num_bytes_to_process = (mz_uint)MZ_MIN( + src_buf_left, TDEFL_MAX_MATCH_LEN - d->m_lookahead_size); + const mz_uint8 *pSrc_end = pSrc + num_bytes_to_process; + src_buf_left -= num_bytes_to_process; + d->m_lookahead_size += num_bytes_to_process; + while (pSrc != pSrc_end) { + mz_uint8 c = *pSrc++; + d->m_dict[dst_pos] = c; + if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) + d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c; + hash = ((hash << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1); + d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; + d->m_hash[hash] = (mz_uint16)(ins_pos); + dst_pos = (dst_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; + ins_pos++; + } + } else { + while ((src_buf_left) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) { + mz_uint8 c = *pSrc++; + mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & + TDEFL_LZ_DICT_SIZE_MASK; + src_buf_left--; + d->m_dict[dst_pos] = c; + if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) + d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c; + if ((++d->m_lookahead_size + d->m_dict_size) >= TDEFL_MIN_MATCH_LEN) { + mz_uint ins_pos = d->m_lookahead_pos + (d->m_lookahead_size - 1) - 2; + mz_uint hash = ((d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] + << (TDEFL_LZ_HASH_SHIFT * 2)) ^ + (d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK] + << TDEFL_LZ_HASH_SHIFT) ^ + c) & + (TDEFL_LZ_HASH_SIZE - 1); + d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; + d->m_hash[hash] = (mz_uint16)(ins_pos); + } + } + } + d->m_dict_size = + MZ_MIN(TDEFL_LZ_DICT_SIZE - d->m_lookahead_size, d->m_dict_size); + if ((!flush) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) + break; + + /* Simple lazy/greedy parsing state machine. */ + len_to_move = 1; + cur_match_dist = 0; + cur_match_len = + d->m_saved_match_len ? d->m_saved_match_len : (TDEFL_MIN_MATCH_LEN - 1); + cur_pos = d->m_lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK; + if (d->m_flags & (TDEFL_RLE_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS)) { + if ((d->m_dict_size) && (!(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) { + mz_uint8 c = d->m_dict[(cur_pos - 1) & TDEFL_LZ_DICT_SIZE_MASK]; + cur_match_len = 0; + while (cur_match_len < d->m_lookahead_size) { + if (d->m_dict[cur_pos + cur_match_len] != c) + break; + cur_match_len++; + } + if (cur_match_len < TDEFL_MIN_MATCH_LEN) + cur_match_len = 0; + else + cur_match_dist = 1; + } + } else { + tdefl_find_match(d, d->m_lookahead_pos, d->m_dict_size, + d->m_lookahead_size, &cur_match_dist, &cur_match_len); + } + if (((cur_match_len == TDEFL_MIN_MATCH_LEN) && + (cur_match_dist >= 8U * 1024U)) || + (cur_pos == cur_match_dist) || + ((d->m_flags & TDEFL_FILTER_MATCHES) && (cur_match_len <= 5))) { + cur_match_dist = cur_match_len = 0; + } + if (d->m_saved_match_len) { + if (cur_match_len > d->m_saved_match_len) { + tdefl_record_literal(d, (mz_uint8)d->m_saved_lit); + if (cur_match_len >= 128) { + tdefl_record_match(d, cur_match_len, cur_match_dist); + d->m_saved_match_len = 0; + len_to_move = cur_match_len; + } else { + d->m_saved_lit = d->m_dict[cur_pos]; + d->m_saved_match_dist = cur_match_dist; + d->m_saved_match_len = cur_match_len; + } + } else { + tdefl_record_match(d, d->m_saved_match_len, d->m_saved_match_dist); + len_to_move = d->m_saved_match_len - 1; + d->m_saved_match_len = 0; + } + } else if (!cur_match_dist) + tdefl_record_literal(d, + d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]); + else if ((d->m_greedy_parsing) || (d->m_flags & TDEFL_RLE_MATCHES) || + (cur_match_len >= 128)) { + tdefl_record_match(d, cur_match_len, cur_match_dist); + len_to_move = cur_match_len; + } else { + d->m_saved_lit = d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]; + d->m_saved_match_dist = cur_match_dist; + d->m_saved_match_len = cur_match_len; + } + /* Move the lookahead forward by len_to_move bytes. */ + d->m_lookahead_pos += len_to_move; + MZ_ASSERT(d->m_lookahead_size >= len_to_move); + d->m_lookahead_size -= len_to_move; + d->m_dict_size = + MZ_MIN(d->m_dict_size + len_to_move, (mz_uint)TDEFL_LZ_DICT_SIZE); + /* Check if it's time to flush the current LZ codes to the internal output + * buffer. */ + if ((d->m_pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) || + ((d->m_total_lz_bytes > 31 * 1024) && + (((((mz_uint)(d->m_pLZ_code_buf - d->m_lz_code_buf) * 115) >> 7) >= + d->m_total_lz_bytes) || + (d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS)))) { + int n; + d->m_pSrc = pSrc; + d->m_src_buf_left = src_buf_left; + if ((n = tdefl_flush_block(d, 0)) != 0) + return (n < 0) ? MZ_FALSE : MZ_TRUE; + } + } + + d->m_pSrc = pSrc; + d->m_src_buf_left = src_buf_left; + return MZ_TRUE; +} + +static tdefl_status tdefl_flush_output_buffer(tdefl_compressor *d) { + if (d->m_pIn_buf_size) { + *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf; + } + + if (d->m_pOut_buf_size) { + size_t n = MZ_MIN(*d->m_pOut_buf_size - d->m_out_buf_ofs, + d->m_output_flush_remaining); + memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, + d->m_output_buf + d->m_output_flush_ofs, n); + d->m_output_flush_ofs += (mz_uint)n; + d->m_output_flush_remaining -= (mz_uint)n; + d->m_out_buf_ofs += n; + + *d->m_pOut_buf_size = d->m_out_buf_ofs; + } + + return (d->m_finished && !d->m_output_flush_remaining) ? TDEFL_STATUS_DONE + : TDEFL_STATUS_OKAY; +} + +tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, + size_t *pIn_buf_size, void *pOut_buf, + size_t *pOut_buf_size, tdefl_flush flush) { + if (!d) { + if (pIn_buf_size) + *pIn_buf_size = 0; + if (pOut_buf_size) + *pOut_buf_size = 0; + return TDEFL_STATUS_BAD_PARAM; + } + + d->m_pIn_buf = pIn_buf; + d->m_pIn_buf_size = pIn_buf_size; + d->m_pOut_buf = pOut_buf; + d->m_pOut_buf_size = pOut_buf_size; + d->m_pSrc = (const mz_uint8 *)(pIn_buf); + d->m_src_buf_left = pIn_buf_size ? *pIn_buf_size : 0; + d->m_out_buf_ofs = 0; + d->m_flush = flush; + + if (((d->m_pPut_buf_func != NULL) == + ((pOut_buf != NULL) || (pOut_buf_size != NULL))) || + (d->m_prev_return_status != TDEFL_STATUS_OKAY) || + (d->m_wants_to_finish && (flush != TDEFL_FINISH)) || + (pIn_buf_size && *pIn_buf_size && !pIn_buf) || + (pOut_buf_size && *pOut_buf_size && !pOut_buf)) { + if (pIn_buf_size) + *pIn_buf_size = 0; + if (pOut_buf_size) + *pOut_buf_size = 0; + return (d->m_prev_return_status = TDEFL_STATUS_BAD_PARAM); + } + d->m_wants_to_finish |= (flush == TDEFL_FINISH); + + if ((d->m_output_flush_remaining) || (d->m_finished)) + return (d->m_prev_return_status = tdefl_flush_output_buffer(d)); + +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN + if (((d->m_flags & TDEFL_MAX_PROBES_MASK) == 1) && + ((d->m_flags & TDEFL_GREEDY_PARSING_FLAG) != 0) && + ((d->m_flags & (TDEFL_FILTER_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS | + TDEFL_RLE_MATCHES)) == 0)) { + if (!tdefl_compress_fast(d)) + return d->m_prev_return_status; + } else +#endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN */ + { + if (!tdefl_compress_normal(d)) + return d->m_prev_return_status; + } + + if ((d->m_flags & (TDEFL_WRITE_ZLIB_HEADER | TDEFL_COMPUTE_ADLER32)) && + (pIn_buf)) + d->m_adler32 = + (mz_uint32)mz_adler32(d->m_adler32, (const mz_uint8 *)pIn_buf, + d->m_pSrc - (const mz_uint8 *)pIn_buf); + + if ((flush) && (!d->m_lookahead_size) && (!d->m_src_buf_left) && + (!d->m_output_flush_remaining)) { + if (tdefl_flush_block(d, flush) < 0) + return d->m_prev_return_status; + d->m_finished = (flush == TDEFL_FINISH); + if (flush == TDEFL_FULL_FLUSH) { + MZ_CLEAR_OBJ(d->m_hash); + MZ_CLEAR_OBJ(d->m_next); + d->m_dict_size = 0; + } + } + + return (d->m_prev_return_status = tdefl_flush_output_buffer(d)); +} + +tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, + size_t in_buf_size, tdefl_flush flush) { + MZ_ASSERT(d->m_pPut_buf_func); + return tdefl_compress(d, pIn_buf, &in_buf_size, NULL, NULL, flush); +} + +tdefl_status tdefl_init(tdefl_compressor *d, + tdefl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags) { + d->m_pPut_buf_func = pPut_buf_func; + d->m_pPut_buf_user = pPut_buf_user; + d->m_flags = (mz_uint)(flags); + d->m_max_probes[0] = 1 + ((flags & 0xFFF) + 2) / 3; + d->m_greedy_parsing = (flags & TDEFL_GREEDY_PARSING_FLAG) != 0; + d->m_max_probes[1] = 1 + (((flags & 0xFFF) >> 2) + 2) / 3; + if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) + MZ_CLEAR_OBJ(d->m_hash); + d->m_lookahead_pos = d->m_lookahead_size = d->m_dict_size = + d->m_total_lz_bytes = d->m_lz_code_buf_dict_pos = d->m_bits_in = 0; + d->m_output_flush_ofs = d->m_output_flush_remaining = d->m_finished = + d->m_block_index = d->m_bit_buffer = d->m_wants_to_finish = 0; + d->m_pLZ_code_buf = d->m_lz_code_buf + 1; + d->m_pLZ_flags = d->m_lz_code_buf; + *d->m_pLZ_flags = 0; + d->m_num_flags_left = 8; + d->m_pOutput_buf = d->m_output_buf; + d->m_pOutput_buf_end = d->m_output_buf; + d->m_prev_return_status = TDEFL_STATUS_OKAY; + d->m_saved_match_dist = d->m_saved_match_len = d->m_saved_lit = 0; + d->m_adler32 = 1; + d->m_pIn_buf = NULL; + d->m_pOut_buf = NULL; + d->m_pIn_buf_size = NULL; + d->m_pOut_buf_size = NULL; + d->m_flush = TDEFL_NO_FLUSH; + d->m_pSrc = NULL; + d->m_src_buf_left = 0; + d->m_out_buf_ofs = 0; + if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) + MZ_CLEAR_OBJ(d->m_dict); + memset(&d->m_huff_count[0][0], 0, + sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0); + memset(&d->m_huff_count[1][0], 0, + sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1); + return TDEFL_STATUS_OKAY; +} + +tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d) { + return d->m_prev_return_status; +} + +mz_uint32 tdefl_get_adler32(tdefl_compressor *d) { return d->m_adler32; } + +mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, + tdefl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags) { + tdefl_compressor *pComp; + mz_bool succeeded; + if (((buf_len) && (!pBuf)) || (!pPut_buf_func)) + return MZ_FALSE; + pComp = (tdefl_compressor *)MZ_MALLOC(sizeof(tdefl_compressor)); + if (!pComp) + return MZ_FALSE; + succeeded = (tdefl_init(pComp, pPut_buf_func, pPut_buf_user, flags) == + TDEFL_STATUS_OKAY); + succeeded = + succeeded && (tdefl_compress_buffer(pComp, pBuf, buf_len, TDEFL_FINISH) == + TDEFL_STATUS_DONE); + MZ_FREE(pComp); + return succeeded; +} + +typedef struct { + size_t m_size, m_capacity; + mz_uint8 *m_pBuf; + mz_bool m_expandable; +} tdefl_output_buffer; + +static mz_bool tdefl_output_buffer_putter(const void *pBuf, int len, + void *pUser) { + tdefl_output_buffer *p = (tdefl_output_buffer *)pUser; + size_t new_size = p->m_size + len; + if (new_size > p->m_capacity) { + size_t new_capacity = p->m_capacity; + mz_uint8 *pNew_buf; + if (!p->m_expandable) + return MZ_FALSE; + do { + new_capacity = MZ_MAX(128U, new_capacity << 1U); + } while (new_size > new_capacity); + pNew_buf = (mz_uint8 *)MZ_REALLOC(p->m_pBuf, new_capacity); + if (!pNew_buf) + return MZ_FALSE; + p->m_pBuf = pNew_buf; + p->m_capacity = new_capacity; + } + memcpy((mz_uint8 *)p->m_pBuf + p->m_size, pBuf, len); + p->m_size = new_size; + return MZ_TRUE; +} + +void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, + size_t *pOut_len, int flags) { + tdefl_output_buffer out_buf; + MZ_CLEAR_OBJ(out_buf); + if (!pOut_len) + return MZ_FALSE; + else + *pOut_len = 0; + out_buf.m_expandable = MZ_TRUE; + if (!tdefl_compress_mem_to_output( + pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) + return NULL; + *pOut_len = out_buf.m_size; + return out_buf.m_pBuf; +} + +size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, + const void *pSrc_buf, size_t src_buf_len, + int flags) { + tdefl_output_buffer out_buf; + MZ_CLEAR_OBJ(out_buf); + if (!pOut_buf) + return 0; + out_buf.m_pBuf = (mz_uint8 *)pOut_buf; + out_buf.m_capacity = out_buf_len; + if (!tdefl_compress_mem_to_output( + pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) + return 0; + return out_buf.m_size; +} + +static const mz_uint s_tdefl_num_probes[11] = {0, 1, 6, 32, 16, 32, + 128, 256, 512, 768, 1500}; + +/* level may actually range from [0,10] (10 is a "hidden" max level, where we + * want a bit more compression and it's fine if throughput to fall off a cliff + * on some files). */ +mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, + int strategy) { + mz_uint comp_flags = + s_tdefl_num_probes[(level >= 0) ? MZ_MIN(10, level) : MZ_DEFAULT_LEVEL] | + ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0); + if (window_bits > 0) + comp_flags |= TDEFL_WRITE_ZLIB_HEADER; + + if (!level) + comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS; + else if (strategy == MZ_FILTERED) + comp_flags |= TDEFL_FILTER_MATCHES; + else if (strategy == MZ_HUFFMAN_ONLY) + comp_flags &= ~TDEFL_MAX_PROBES_MASK; + else if (strategy == MZ_FIXED) + comp_flags |= TDEFL_FORCE_ALL_STATIC_BLOCKS; + else if (strategy == MZ_RLE) + comp_flags |= TDEFL_RLE_MATCHES; + + return comp_flags; +} + +#ifdef _MSC_VER +#pragma warning(push) +#pragma warning(disable : 4204) /* nonstandard extension used : non-constant \ + aggregate initializer (also supported by \ + GNU C and C99, so no big deal) */ +#endif + +/* Simple PNG writer function by Alex Evans, 2011. Released into the public + domain: https://gist.github.com/908299, more context at + http://altdevblogaday.org/2011/04/06/a-smaller-jpg-encoder/. + This is actually a modification of Alex's original code so PNG files generated + by this function pass pngcheck. */ +void *tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, + int h, int num_chans, + size_t *pLen_out, + mz_uint level, mz_bool flip) { + /* Using a local copy of this array here in case MINIZ_NO_ZLIB_APIS was + * defined. */ + static const mz_uint s_tdefl_png_num_probes[11] = { + 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500}; + tdefl_compressor *pComp = + (tdefl_compressor *)MZ_MALLOC(sizeof(tdefl_compressor)); + tdefl_output_buffer out_buf; + int i, bpl = w * num_chans, y, z; + mz_uint32 c; + *pLen_out = 0; + if (!pComp) + return NULL; + MZ_CLEAR_OBJ(out_buf); + out_buf.m_expandable = MZ_TRUE; + out_buf.m_capacity = 57 + MZ_MAX(64, (1 + bpl) * h); + if (NULL == (out_buf.m_pBuf = (mz_uint8 *)MZ_MALLOC(out_buf.m_capacity))) { + MZ_FREE(pComp); + return NULL; + } + /* write dummy header */ + for (z = 41; z; --z) + tdefl_output_buffer_putter(&z, 1, &out_buf); + /* compress image data */ + tdefl_init(pComp, tdefl_output_buffer_putter, &out_buf, + s_tdefl_png_num_probes[MZ_MIN(10, level)] | + TDEFL_WRITE_ZLIB_HEADER); + for (y = 0; y < h; ++y) { + tdefl_compress_buffer(pComp, &z, 1, TDEFL_NO_FLUSH); + tdefl_compress_buffer(pComp, + (mz_uint8 *)pImage + (flip ? (h - 1 - y) : y) * bpl, + bpl, TDEFL_NO_FLUSH); + } + if (tdefl_compress_buffer(pComp, NULL, 0, TDEFL_FINISH) != + TDEFL_STATUS_DONE) { + MZ_FREE(pComp); + MZ_FREE(out_buf.m_pBuf); + return NULL; + } + /* write real header */ + *pLen_out = out_buf.m_size - 41; + { + static const mz_uint8 chans[] = {0x00, 0x00, 0x04, 0x02, 0x06}; + mz_uint8 pnghdr[41] = {0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, + 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x49, 0x44, 0x41, 0x54}; + pnghdr[18] = (mz_uint8)(w >> 8); + pnghdr[19] = (mz_uint8)w; + pnghdr[22] = (mz_uint8)(h >> 8); + pnghdr[23] = (mz_uint8)h; + pnghdr[25] = chans[num_chans]; + pnghdr[33] = (mz_uint8)(*pLen_out >> 24); + pnghdr[34] = (mz_uint8)(*pLen_out >> 16); + pnghdr[35] = (mz_uint8)(*pLen_out >> 8); + pnghdr[36] = (mz_uint8)*pLen_out; + c = (mz_uint32)mz_crc32(MZ_CRC32_INIT, pnghdr + 12, 17); + for (i = 0; i < 4; ++i, c <<= 8) + ((mz_uint8 *)(pnghdr + 29))[i] = (mz_uint8)(c >> 24); + memcpy(out_buf.m_pBuf, pnghdr, 41); + } + /* write footer (IDAT CRC-32, followed by IEND chunk) */ + if (!tdefl_output_buffer_putter( + "\0\0\0\0\0\0\0\0\x49\x45\x4e\x44\xae\x42\x60\x82", 16, &out_buf)) { + *pLen_out = 0; + MZ_FREE(pComp); + MZ_FREE(out_buf.m_pBuf); + return NULL; + } + c = (mz_uint32)mz_crc32(MZ_CRC32_INIT, out_buf.m_pBuf + 41 - 4, + *pLen_out + 4); + for (i = 0; i < 4; ++i, c <<= 8) + (out_buf.m_pBuf + out_buf.m_size - 16)[i] = (mz_uint8)(c >> 24); + /* compute final size of file, grab compressed data buffer and return */ + *pLen_out += 57; + MZ_FREE(pComp); + return out_buf.m_pBuf; +} +void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, + int num_chans, size_t *pLen_out) { + /* Level 6 corresponds to TDEFL_DEFAULT_MAX_PROBES or MZ_DEFAULT_LEVEL (but we + * can't depend on MZ_DEFAULT_LEVEL being available in case the zlib API's + * where #defined out) */ + return tdefl_write_image_to_png_file_in_memory_ex(pImage, w, h, num_chans, + pLen_out, 6, MZ_FALSE); +} + +#ifndef MINIZ_NO_MALLOC +/* Allocate the tdefl_compressor and tinfl_decompressor structures in C so that + */ +/* non-C language bindings to tdefL_ and tinfl_ API don't need to worry about */ +/* structure size and allocation mechanism. */ +tdefl_compressor *tdefl_compressor_alloc(void) { + return (tdefl_compressor *)MZ_MALLOC(sizeof(tdefl_compressor)); +} + +void tdefl_compressor_free(tdefl_compressor *pComp) { MZ_FREE(pComp); } +#endif + +#ifdef _MSC_VER +#pragma warning(pop) +#endif + +#ifdef __cplusplus +} +#endif +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + **************************************************************************/ + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- Low-level Decompression (completely independent from all + * compression API's) */ + +#define TINFL_MEMCPY(d, s, l) memcpy(d, s, l) +#define TINFL_MEMSET(p, c, l) memset(p, c, l) + +#define TINFL_CR_BEGIN \ + switch (r->m_state) { \ + case 0: +#define TINFL_CR_RETURN(state_index, result) \ + do { \ + status = result; \ + r->m_state = state_index; \ + goto common_exit; \ + case state_index:; \ + } \ + MZ_MACRO_END +#define TINFL_CR_RETURN_FOREVER(state_index, result) \ + do { \ + for (;;) { \ + TINFL_CR_RETURN(state_index, result); \ + } \ + } \ + MZ_MACRO_END +#define TINFL_CR_FINISH } + +#define TINFL_GET_BYTE(state_index, c) \ + do { \ + while (pIn_buf_cur >= pIn_buf_end) { \ + TINFL_CR_RETURN(state_index, \ + (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) \ + ? TINFL_STATUS_NEEDS_MORE_INPUT \ + : TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS); \ + } \ + c = *pIn_buf_cur++; \ + } \ + MZ_MACRO_END + +#define TINFL_NEED_BITS(state_index, n) \ + do { \ + mz_uint c; \ + TINFL_GET_BYTE(state_index, c); \ + bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); \ + num_bits += 8; \ + } while (num_bits < (mz_uint)(n)) +#define TINFL_SKIP_BITS(state_index, n) \ + do { \ + if (num_bits < (mz_uint)(n)) { \ + TINFL_NEED_BITS(state_index, n); \ + } \ + bit_buf >>= (n); \ + num_bits -= (n); \ + } \ + MZ_MACRO_END +#define TINFL_GET_BITS(state_index, b, n) \ + do { \ + if (num_bits < (mz_uint)(n)) { \ + TINFL_NEED_BITS(state_index, n); \ + } \ + b = bit_buf & ((1 << (n)) - 1); \ + bit_buf >>= (n); \ + num_bits -= (n); \ + } \ + MZ_MACRO_END + +/* TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of bytes + * remaining in the input buffer falls below 2. */ +/* It reads just enough bytes from the input stream that are needed to decode + * the next Huffman code (and absolutely no more). It works by trying to fully + * decode a */ +/* Huffman code by using whatever bits are currently present in the bit buffer. + * If this fails, it reads another byte, and tries again until it succeeds or + * until the */ +/* bit buffer contains >=15 bits (deflate's max. Huffman code size). */ +#define TINFL_HUFF_BITBUF_FILL(state_index, pHuff) \ + do { \ + temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \ + if (temp >= 0) { \ + code_len = temp >> 9; \ + if ((code_len) && (num_bits >= code_len)) \ + break; \ + } else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \ + code_len = TINFL_FAST_LOOKUP_BITS; \ + do { \ + temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \ + } while ((temp < 0) && (num_bits >= (code_len + 1))); \ + if (temp >= 0) \ + break; \ + } \ + TINFL_GET_BYTE(state_index, c); \ + bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); \ + num_bits += 8; \ + } while (num_bits < 15); + +/* TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's more complex + * than you would initially expect because the zlib API expects the decompressor + * to never read */ +/* beyond the final byte of the deflate stream. (In other words, when this macro + * wants to read another byte from the input, it REALLY needs another byte in + * order to fully */ +/* decode the next Huffman code.) Handling this properly is particularly + * important on raw deflate (non-zlib) streams, which aren't followed by a byte + * aligned adler-32. */ +/* The slow path is only executed at the very end of the input buffer. */ +/* v1.16: The original macro handled the case at the very end of the passed-in + * input buffer, but we also need to handle the case where the user passes in + * 1+zillion bytes */ +/* following the deflate data and our non-conservative read-ahead path won't + * kick in here on this code. This is much trickier. */ +#define TINFL_HUFF_DECODE(state_index, sym, pHuff) \ + do { \ + int temp; \ + mz_uint code_len, c; \ + if (num_bits < 15) { \ + if ((pIn_buf_end - pIn_buf_cur) < 2) { \ + TINFL_HUFF_BITBUF_FILL(state_index, pHuff); \ + } else { \ + bit_buf |= (((tinfl_bit_buf_t)pIn_buf_cur[0]) << num_bits) | \ + (((tinfl_bit_buf_t)pIn_buf_cur[1]) << (num_bits + 8)); \ + pIn_buf_cur += 2; \ + num_bits += 16; \ + } \ + } \ + if ((temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= \ + 0) \ + code_len = temp >> 9, temp &= 511; \ + else { \ + code_len = TINFL_FAST_LOOKUP_BITS; \ + do { \ + temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \ + } while (temp < 0); \ + } \ + sym = temp; \ + bit_buf >>= code_len; \ + num_bits -= code_len; \ + } \ + MZ_MACRO_END + +tinfl_status tinfl_decompress(tinfl_decompressor *r, + const mz_uint8 *pIn_buf_next, + size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, + mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, + const mz_uint32 decomp_flags) { + static const int s_length_base[31] = { + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, + 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; + static const int s_length_extra[31] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, + 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, + 4, 4, 5, 5, 5, 5, 0, 0, 0}; + static const int s_dist_base[32] = { + 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, + 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, + 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 0, 0}; + static const int s_dist_extra[32] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, + 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, + 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; + static const mz_uint8 s_length_dezigzag[19] = { + 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; + static const int s_min_table_sizes[3] = {257, 1, 4}; + + tinfl_status status = TINFL_STATUS_FAILED; + mz_uint32 num_bits, dist, counter, num_extra; + tinfl_bit_buf_t bit_buf; + const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = + pIn_buf_next + *pIn_buf_size; + mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = + pOut_buf_next + *pOut_buf_size; + size_t out_buf_size_mask = + (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF) + ? (size_t)-1 + : ((pOut_buf_next - pOut_buf_start) + *pOut_buf_size) - 1, + dist_from_out_buf_start; + + /* Ensure the output buffer's size is a power of 2, unless the output buffer + * is large enough to hold the entire output file (in which case it doesn't + * matter). */ + if (((out_buf_size_mask + 1) & out_buf_size_mask) || + (pOut_buf_next < pOut_buf_start)) { + *pIn_buf_size = *pOut_buf_size = 0; + return TINFL_STATUS_BAD_PARAM; + } + + num_bits = r->m_num_bits; + bit_buf = r->m_bit_buf; + dist = r->m_dist; + counter = r->m_counter; + num_extra = r->m_num_extra; + dist_from_out_buf_start = r->m_dist_from_out_buf_start; + TINFL_CR_BEGIN + + bit_buf = num_bits = dist = counter = num_extra = r->m_zhdr0 = r->m_zhdr1 = 0; + r->m_z_adler32 = r->m_check_adler32 = 1; + if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) { + TINFL_GET_BYTE(1, r->m_zhdr0); + TINFL_GET_BYTE(2, r->m_zhdr1); + counter = (((r->m_zhdr0 * 256 + r->m_zhdr1) % 31 != 0) || + (r->m_zhdr1 & 32) || ((r->m_zhdr0 & 15) != 8)); + if (!(decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) + counter |= (((1U << (8U + (r->m_zhdr0 >> 4))) > 32768U) || + ((out_buf_size_mask + 1) < + (size_t)(1U << (8U + (r->m_zhdr0 >> 4))))); + if (counter) { + TINFL_CR_RETURN_FOREVER(36, TINFL_STATUS_FAILED); + } + } + + do { + TINFL_GET_BITS(3, r->m_final, 3); + r->m_type = r->m_final >> 1; + if (r->m_type == 0) { + TINFL_SKIP_BITS(5, num_bits & 7); + for (counter = 0; counter < 4; ++counter) { + if (num_bits) + TINFL_GET_BITS(6, r->m_raw_header[counter], 8); + else + TINFL_GET_BYTE(7, r->m_raw_header[counter]); + } + if ((counter = (r->m_raw_header[0] | (r->m_raw_header[1] << 8))) != + (mz_uint)(0xFFFF ^ + (r->m_raw_header[2] | (r->m_raw_header[3] << 8)))) { + TINFL_CR_RETURN_FOREVER(39, TINFL_STATUS_FAILED); + } + while ((counter) && (num_bits)) { + TINFL_GET_BITS(51, dist, 8); + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT); + } + *pOut_buf_cur++ = (mz_uint8)dist; + counter--; + } + while (counter) { + size_t n; + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT); + } + while (pIn_buf_cur >= pIn_buf_end) { + TINFL_CR_RETURN(38, (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) + ? TINFL_STATUS_NEEDS_MORE_INPUT + : TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS); + } + n = MZ_MIN(MZ_MIN((size_t)(pOut_buf_end - pOut_buf_cur), + (size_t)(pIn_buf_end - pIn_buf_cur)), + counter); + TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n); + pIn_buf_cur += n; + pOut_buf_cur += n; + counter -= (mz_uint)n; + } + } else if (r->m_type == 3) { + TINFL_CR_RETURN_FOREVER(10, TINFL_STATUS_FAILED); + } else { + if (r->m_type == 1) { + mz_uint8 *p = r->m_tables[0].m_code_size; + mz_uint i; + r->m_table_sizes[0] = 288; + r->m_table_sizes[1] = 32; + TINFL_MEMSET(r->m_tables[1].m_code_size, 5, 32); + for (i = 0; i <= 143; ++i) + *p++ = 8; + for (; i <= 255; ++i) + *p++ = 9; + for (; i <= 279; ++i) + *p++ = 7; + for (; i <= 287; ++i) + *p++ = 8; + } else { + for (counter = 0; counter < 3; counter++) { + TINFL_GET_BITS(11, r->m_table_sizes[counter], "\05\05\04"[counter]); + r->m_table_sizes[counter] += s_min_table_sizes[counter]; + } + MZ_CLEAR_OBJ(r->m_tables[2].m_code_size); + for (counter = 0; counter < r->m_table_sizes[2]; counter++) { + mz_uint s; + TINFL_GET_BITS(14, s, 3); + r->m_tables[2].m_code_size[s_length_dezigzag[counter]] = (mz_uint8)s; + } + r->m_table_sizes[2] = 19; + } + for (; (int)r->m_type >= 0; r->m_type--) { + int tree_next, tree_cur; + tinfl_huff_table *pTable; + mz_uint i, j, used_syms, total, sym_index, next_code[17], + total_syms[16]; + pTable = &r->m_tables[r->m_type]; + MZ_CLEAR_OBJ(total_syms); + MZ_CLEAR_OBJ(pTable->m_look_up); + MZ_CLEAR_OBJ(pTable->m_tree); + for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) + total_syms[pTable->m_code_size[i]]++; + used_syms = 0, total = 0; + next_code[0] = next_code[1] = 0; + for (i = 1; i <= 15; ++i) { + used_syms += total_syms[i]; + next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); + } + if ((65536 != total) && (used_syms > 1)) { + TINFL_CR_RETURN_FOREVER(35, TINFL_STATUS_FAILED); + } + for (tree_next = -1, sym_index = 0; + sym_index < r->m_table_sizes[r->m_type]; ++sym_index) { + mz_uint rev_code = 0, l, cur_code, + code_size = pTable->m_code_size[sym_index]; + + if (!code_size) + continue; + cur_code = next_code[code_size]++; + for (l = code_size; l > 0; l--, cur_code >>= 1) + rev_code = (rev_code << 1) | (cur_code & 1); + if (code_size <= TINFL_FAST_LOOKUP_BITS) { + mz_int16 k = (mz_int16)((code_size << 9) | sym_index); + while (rev_code < TINFL_FAST_LOOKUP_SIZE) { + pTable->m_look_up[rev_code] = k; + rev_code += (1 << code_size); + } + continue; + } + if (0 == + (tree_cur = pTable->m_look_up[rev_code & + (TINFL_FAST_LOOKUP_SIZE - 1)])) { + pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = + (mz_int16)tree_next; + tree_cur = tree_next; + tree_next -= 2; + } + rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1); + for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--) { + tree_cur -= ((rev_code >>= 1) & 1); + if (!pTable->m_tree[-tree_cur - 1]) { + pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next; + tree_cur = tree_next; + tree_next -= 2; + } else + tree_cur = pTable->m_tree[-tree_cur - 1]; + } + tree_cur -= ((rev_code >>= 1) & 1); + (void)rev_code; // unused + pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index; + } + if (r->m_type == 2) { + for (counter = 0; + counter < (r->m_table_sizes[0] + r->m_table_sizes[1]);) { + mz_uint s; + TINFL_HUFF_DECODE(16, dist, &r->m_tables[2]); + if (dist < 16) { + r->m_len_codes[counter++] = (mz_uint8)dist; + continue; + } + if ((dist == 16) && (!counter)) { + TINFL_CR_RETURN_FOREVER(17, TINFL_STATUS_FAILED); + } + num_extra = "\02\03\07"[dist - 16]; + TINFL_GET_BITS(18, s, num_extra); + s += "\03\03\013"[dist - 16]; + TINFL_MEMSET(r->m_len_codes + counter, + (dist == 16) ? r->m_len_codes[counter - 1] : 0, s); + counter += s; + } + if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != counter) { + TINFL_CR_RETURN_FOREVER(21, TINFL_STATUS_FAILED); + } + TINFL_MEMCPY(r->m_tables[0].m_code_size, r->m_len_codes, + r->m_table_sizes[0]); + TINFL_MEMCPY(r->m_tables[1].m_code_size, + r->m_len_codes + r->m_table_sizes[0], + r->m_table_sizes[1]); + } + } + for (;;) { + mz_uint8 *pSrc; + for (;;) { + if (((pIn_buf_end - pIn_buf_cur) < 4) || + ((pOut_buf_end - pOut_buf_cur) < 2)) { + TINFL_HUFF_DECODE(23, counter, &r->m_tables[0]); + if (counter >= 256) + break; + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT); + } + *pOut_buf_cur++ = (mz_uint8)counter; + } else { + int sym2; + mz_uint code_len; +#if TINFL_USE_64BIT_BITBUF + if (num_bits < 30) { + bit_buf |= + (((tinfl_bit_buf_t)MZ_READ_LE32(pIn_buf_cur)) << num_bits); + pIn_buf_cur += 4; + num_bits += 32; + } +#else + if (num_bits < 15) { + bit_buf |= + (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); + pIn_buf_cur += 2; + num_bits += 16; + } +#endif + if ((sym2 = + r->m_tables[0] + .m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= + 0) + code_len = sym2 >> 9; + else { + code_len = TINFL_FAST_LOOKUP_BITS; + do { + sym2 = r->m_tables[0] + .m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; + } while (sym2 < 0); + } + counter = sym2; + bit_buf >>= code_len; + num_bits -= code_len; + if (counter & 256) + break; + +#if !TINFL_USE_64BIT_BITBUF + if (num_bits < 15) { + bit_buf |= + (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); + pIn_buf_cur += 2; + num_bits += 16; + } +#endif + if ((sym2 = + r->m_tables[0] + .m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= + 0) + code_len = sym2 >> 9; + else { + code_len = TINFL_FAST_LOOKUP_BITS; + do { + sym2 = r->m_tables[0] + .m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; + } while (sym2 < 0); + } + bit_buf >>= code_len; + num_bits -= code_len; + + pOut_buf_cur[0] = (mz_uint8)counter; + if (sym2 & 256) { + pOut_buf_cur++; + counter = sym2; + break; + } + pOut_buf_cur[1] = (mz_uint8)sym2; + pOut_buf_cur += 2; + } + } + if ((counter &= 511) == 256) + break; + + num_extra = s_length_extra[counter - 257]; + counter = s_length_base[counter - 257]; + if (num_extra) { + mz_uint extra_bits; + TINFL_GET_BITS(25, extra_bits, num_extra); + counter += extra_bits; + } + + TINFL_HUFF_DECODE(26, dist, &r->m_tables[1]); + num_extra = s_dist_extra[dist]; + dist = s_dist_base[dist]; + if (num_extra) { + mz_uint extra_bits; + TINFL_GET_BITS(27, extra_bits, num_extra); + dist += extra_bits; + } + + dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start; + if ((dist == 0 || dist > dist_from_out_buf_start || + dist_from_out_buf_start == 0) && + (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) { + TINFL_CR_RETURN_FOREVER(37, TINFL_STATUS_FAILED); + } + + pSrc = pOut_buf_start + + ((dist_from_out_buf_start - dist) & out_buf_size_mask); + + if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end) { + while (counter--) { + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT); + } + *pOut_buf_cur++ = + pOut_buf_start[(dist_from_out_buf_start++ - dist) & + out_buf_size_mask]; + } + continue; + } +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES + else if ((counter >= 9) && (counter <= dist)) { + const mz_uint8 *pSrc_end = pSrc + (counter & ~7); + do { +#ifdef MINIZ_UNALIGNED_USE_MEMCPY + memcpy(pOut_buf_cur, pSrc, sizeof(mz_uint32) * 2); +#else + ((mz_uint32 *)pOut_buf_cur)[0] = ((const mz_uint32 *)pSrc)[0]; + ((mz_uint32 *)pOut_buf_cur)[1] = ((const mz_uint32 *)pSrc)[1]; +#endif + pOut_buf_cur += 8; + } while ((pSrc += 8) < pSrc_end); + if ((counter &= 7) < 3) { + if (counter) { + pOut_buf_cur[0] = pSrc[0]; + if (counter > 1) + pOut_buf_cur[1] = pSrc[1]; + pOut_buf_cur += counter; + } + continue; + } + } +#endif + while (counter > 2) { + pOut_buf_cur[0] = pSrc[0]; + pOut_buf_cur[1] = pSrc[1]; + pOut_buf_cur[2] = pSrc[2]; + pOut_buf_cur += 3; + pSrc += 3; + counter -= 3; + } + if (counter > 0) { + pOut_buf_cur[0] = pSrc[0]; + if (counter > 1) + pOut_buf_cur[1] = pSrc[1]; + pOut_buf_cur += counter; + } + } + } + } while (!(r->m_final & 1)); + + /* Ensure byte alignment and put back any bytes from the bitbuf if we've + * looked ahead too far on gzip, or other Deflate streams followed by + * arbitrary data. */ + /* I'm being super conservative here. A number of simplifications can be made + * to the byte alignment part, and the Adler32 check shouldn't ever need to + * worry about reading from the bitbuf now. */ + TINFL_SKIP_BITS(32, num_bits & 7); + while ((pIn_buf_cur > pIn_buf_next) && (num_bits >= 8)) { + --pIn_buf_cur; + num_bits -= 8; + } + bit_buf &= (tinfl_bit_buf_t)((((mz_uint64)1) << num_bits) - (mz_uint64)1); + MZ_ASSERT(!num_bits); /* if this assert fires then we've read beyond the end + of non-deflate/zlib streams with following data (such + as gzip streams). */ + + if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) { + for (counter = 0; counter < 4; ++counter) { + mz_uint s; + if (num_bits) + TINFL_GET_BITS(41, s, 8); + else + TINFL_GET_BYTE(42, s); + r->m_z_adler32 = (r->m_z_adler32 << 8) | s; + } + } + TINFL_CR_RETURN_FOREVER(34, TINFL_STATUS_DONE); + + TINFL_CR_FINISH + +common_exit: + /* As long as we aren't telling the caller that we NEED more input to make + * forward progress: */ + /* Put back any bytes from the bitbuf in case we've looked ahead too far on + * gzip, or other Deflate streams followed by arbitrary data. */ + /* We need to be very careful here to NOT push back any bytes we definitely + * know we need to make forward progress, though, or we'll lock the caller up + * into an inf loop. */ + if ((status != TINFL_STATUS_NEEDS_MORE_INPUT) && + (status != TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS)) { + while ((pIn_buf_cur > pIn_buf_next) && (num_bits >= 8)) { + --pIn_buf_cur; + num_bits -= 8; + } + } + r->m_num_bits = num_bits; + r->m_bit_buf = + bit_buf & (tinfl_bit_buf_t)((((mz_uint64)1) << num_bits) - (mz_uint64)1); + r->m_dist = dist; + r->m_counter = counter; + r->m_num_extra = num_extra; + r->m_dist_from_out_buf_start = dist_from_out_buf_start; + *pIn_buf_size = pIn_buf_cur - pIn_buf_next; + *pOut_buf_size = pOut_buf_cur - pOut_buf_next; + if ((decomp_flags & + (TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32)) && + (status >= 0)) { + const mz_uint8 *ptr = pOut_buf_next; + size_t buf_len = *pOut_buf_size; + mz_uint32 i, s1 = r->m_check_adler32 & 0xffff, + s2 = r->m_check_adler32 >> 16; + size_t block_len = buf_len % 5552; + while (buf_len) { + for (i = 0; i + 7 < block_len; i += 8, ptr += 8) { + s1 += ptr[0], s2 += s1; + s1 += ptr[1], s2 += s1; + s1 += ptr[2], s2 += s1; + s1 += ptr[3], s2 += s1; + s1 += ptr[4], s2 += s1; + s1 += ptr[5], s2 += s1; + s1 += ptr[6], s2 += s1; + s1 += ptr[7], s2 += s1; + } + for (; i < block_len; ++i) + s1 += *ptr++, s2 += s1; + s1 %= 65521U, s2 %= 65521U; + buf_len -= block_len; + block_len = 5552; + } + r->m_check_adler32 = (s2 << 16) + s1; + if ((status == TINFL_STATUS_DONE) && + (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) && + (r->m_check_adler32 != r->m_z_adler32)) + status = TINFL_STATUS_ADLER32_MISMATCH; + } + return status; +} + +/* Higher level helper functions. */ +void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, + size_t *pOut_len, int flags) { + tinfl_decompressor decomp; + void *pBuf = NULL, *pNew_buf; + size_t src_buf_ofs = 0, out_buf_capacity = 0; + *pOut_len = 0; + tinfl_init(&decomp); + for (;;) { + size_t src_buf_size = src_buf_len - src_buf_ofs, + dst_buf_size = out_buf_capacity - *pOut_len, new_out_buf_capacity; + tinfl_status status = tinfl_decompress( + &decomp, (const mz_uint8 *)pSrc_buf + src_buf_ofs, &src_buf_size, + (mz_uint8 *)pBuf, pBuf ? (mz_uint8 *)pBuf + *pOut_len : NULL, + &dst_buf_size, + (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF); + if ((status < 0) || (status == TINFL_STATUS_NEEDS_MORE_INPUT)) { + MZ_FREE(pBuf); + *pOut_len = 0; + return NULL; + } + src_buf_ofs += src_buf_size; + *pOut_len += dst_buf_size; + if (status == TINFL_STATUS_DONE) + break; + new_out_buf_capacity = out_buf_capacity * 2; + if (new_out_buf_capacity < 128) + new_out_buf_capacity = 128; + pNew_buf = MZ_REALLOC(pBuf, new_out_buf_capacity); + if (!pNew_buf) { + MZ_FREE(pBuf); + *pOut_len = 0; + return NULL; + } + pBuf = pNew_buf; + out_buf_capacity = new_out_buf_capacity; + } + return pBuf; +} + +size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, + const void *pSrc_buf, size_t src_buf_len, + int flags) { + tinfl_decompressor decomp; + tinfl_status status; + tinfl_init(&decomp); + status = + tinfl_decompress(&decomp, (const mz_uint8 *)pSrc_buf, &src_buf_len, + (mz_uint8 *)pOut_buf, (mz_uint8 *)pOut_buf, &out_buf_len, + (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF); + return (status != TINFL_STATUS_DONE) ? TINFL_DECOMPRESS_MEM_TO_MEM_FAILED + : out_buf_len; +} + +int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, + tinfl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags) { + int result = 0; + tinfl_decompressor decomp; + mz_uint8 *pDict = (mz_uint8 *)MZ_MALLOC(TINFL_LZ_DICT_SIZE); + size_t in_buf_ofs = 0, dict_ofs = 0; + if (!pDict) + return TINFL_STATUS_FAILED; + tinfl_init(&decomp); + for (;;) { + size_t in_buf_size = *pIn_buf_size - in_buf_ofs, + dst_buf_size = TINFL_LZ_DICT_SIZE - dict_ofs; + tinfl_status status = + tinfl_decompress(&decomp, (const mz_uint8 *)pIn_buf + in_buf_ofs, + &in_buf_size, pDict, pDict + dict_ofs, &dst_buf_size, + (flags & ~(TINFL_FLAG_HAS_MORE_INPUT | + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF))); + in_buf_ofs += in_buf_size; + if ((dst_buf_size) && + (!(*pPut_buf_func)(pDict + dict_ofs, (int)dst_buf_size, pPut_buf_user))) + break; + if (status != TINFL_STATUS_HAS_MORE_OUTPUT) { + result = (status == TINFL_STATUS_DONE); + break; + } + dict_ofs = (dict_ofs + dst_buf_size) & (TINFL_LZ_DICT_SIZE - 1); + } + MZ_FREE(pDict); + *pIn_buf_size = in_buf_ofs; + return result; +} + +#ifndef MINIZ_NO_MALLOC +tinfl_decompressor *tinfl_decompressor_alloc(void) { + tinfl_decompressor *pDecomp = + (tinfl_decompressor *)MZ_MALLOC(sizeof(tinfl_decompressor)); + if (pDecomp) + tinfl_init(pDecomp); + return pDecomp; +} + +void tinfl_decompressor_free(tinfl_decompressor *pDecomp) { MZ_FREE(pDecomp); } +#endif + +#ifdef __cplusplus +} +#endif +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * Copyright 2016 Martin Raiber + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + **************************************************************************/ + +#ifndef MINIZ_NO_ARCHIVE_APIS + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- .ZIP archive reading */ + +#ifdef MINIZ_NO_STDIO +#define MZ_FILE void * +#else +#include + +#if defined(_MSC_VER) +#include +#ifndef MINIZ_NO_TIME +#include +#endif +static wchar_t *str2wstr(const char *str) { + size_t len = strlen(str) + 1; + wchar_t *wstr = (wchar_t *)malloc(len * sizeof(wchar_t)); + MultiByteToWideChar(CP_UTF8, 0, str, (int)(len * sizeof(char)), wstr, + (int)len); + return wstr; +} + +static FILE *mz_fopen(const char *pFilename, const char *pMode) { + FILE *pFile = NULL; + wchar_t *wFilename = str2wstr(pFilename); + wchar_t *wMode = str2wstr(pMode); + +#ifdef ZIP_ENABLE_SHARABLE_FILE_OPEN + pFile = _wfopen(wFilename, wMode); +#else + _wfopen_s(&pFile, wFilename, wMode); +#endif + free(wFilename); + free(wMode); + + return pFile; +} + +static FILE *mz_freopen(const char *pPath, const char *pMode, FILE *pStream) { + FILE *pFile = NULL; + int res = 0; + + wchar_t *wPath = str2wstr(pPath); + wchar_t *wMode = str2wstr(pMode); + +#ifdef ZIP_ENABLE_SHARABLE_FILE_OPEN + pFile = _wfreopen(wPath, wMode, pStream); +#else + res = _wfreopen_s(&pFile, wPath, wMode, pStream); +#endif + + free(wPath); + free(wMode); + +#ifndef ZIP_ENABLE_SHARABLE_FILE_OPEN + if (res) { + return NULL; + } +#endif + + return pFile; +} + +static int mz_stat(const char *pPath, struct _stat64 *buffer) { + wchar_t *wPath = str2wstr(pPath); + int res = _wstat64(wPath, buffer); + + free(wPath); + + return res; +} + +static int mz_mkdir(const char *pDirname) { + wchar_t *wDirname = str2wstr(pDirname); + int res = _wmkdir(wDirname); + + free(wDirname); + + return res; +} + +#define MZ_FOPEN mz_fopen +#define MZ_FCLOSE fclose +#define MZ_FREAD fread +#define MZ_FWRITE fwrite +#define MZ_FTELL64 _ftelli64 +#define MZ_FSEEK64 _fseeki64 +#define MZ_FILE_STAT_STRUCT _stat64 +#define MZ_FILE_STAT mz_stat +#define MZ_FFLUSH fflush +#define MZ_FREOPEN mz_freopen +#define MZ_DELETE_FILE remove +#define MZ_MKDIR(d) mz_mkdir(d) + +#elif defined(__MINGW32__) || defined(__MINGW64__) +#include +#ifndef MINIZ_NO_TIME +#include +#endif + +#define MZ_FOPEN(f, m) fopen(f, m) +#define MZ_FCLOSE fclose +#define MZ_FREAD fread +#define MZ_FWRITE fwrite +#define MZ_FTELL64 ftell +#define MZ_FSEEK64 fseek +#define MZ_FILE_STAT_STRUCT stat +#define MZ_FILE_STAT stat +#define MZ_FFLUSH fflush +#define MZ_FREOPEN(f, m, s) freopen(f, m, s) +#define MZ_DELETE_FILE remove +#define MZ_MKDIR(d) _mkdir(d) + +#elif defined(__TINYC__) +#ifndef MINIZ_NO_TIME +#include +#endif + +#define MZ_FOPEN(f, m) fopen(f, m) +#define MZ_FCLOSE fclose +#define MZ_FREAD fread +#define MZ_FWRITE fwrite +#define MZ_FTELL64 ftell +#define MZ_FSEEK64 fseek +#define MZ_FILE_STAT_STRUCT stat +#define MZ_FILE_STAT stat +#define MZ_FFLUSH fflush +#define MZ_FREOPEN(f, m, s) freopen(f, m, s) +#define MZ_DELETE_FILE remove +#if defined(_WIN32) || defined(_WIN64) +#define MZ_MKDIR(d) _mkdir(d) +#else +#define MZ_MKDIR(d) mkdir(d, 0755) +#endif + +#elif defined(__USE_LARGEFILE64) /* gcc, clang */ +#ifndef MINIZ_NO_TIME +#include +#endif + +#define MZ_FOPEN(f, m) fopen64(f, m) +#define MZ_FCLOSE fclose +#define MZ_FREAD fread +#define MZ_FWRITE fwrite +#define MZ_FTELL64 ftello64 +#define MZ_FSEEK64 fseeko64 +#define MZ_FILE_STAT_STRUCT stat64 +#define MZ_FILE_STAT stat64 +#define MZ_FFLUSH fflush +#define MZ_FREOPEN(p, m, s) freopen64(p, m, s) +#define MZ_DELETE_FILE remove +#define MZ_MKDIR(d) mkdir(d, 0755) + +#elif defined(__APPLE__) +#ifndef MINIZ_NO_TIME +#include +#endif + +#define MZ_FOPEN(f, m) fopen(f, m) +#define MZ_FCLOSE fclose +#define MZ_FREAD fread +#define MZ_FWRITE fwrite +#define MZ_FTELL64 ftello +#define MZ_FSEEK64 fseeko +#define MZ_FILE_STAT_STRUCT stat +#define MZ_FILE_STAT stat +#define MZ_FFLUSH fflush +#define MZ_FREOPEN(p, m, s) freopen(p, m, s) +#define MZ_DELETE_FILE remove +#define MZ_MKDIR(d) mkdir(d, 0755) + +#else +#pragma message( \ + "Using fopen, ftello, fseeko, stat() etc. path for file I/O - this path may not support large files.") +#ifndef MINIZ_NO_TIME +#include +#endif + +#define MZ_FOPEN(f, m) fopen(f, m) +#define MZ_FCLOSE fclose +#define MZ_FREAD fread +#define MZ_FWRITE fwrite +#ifdef __STRICT_ANSI__ +#define MZ_FTELL64 ftell +#define MZ_FSEEK64 fseek +#else +#define MZ_FTELL64 ftello +#define MZ_FSEEK64 fseeko +#endif +#define MZ_FILE_STAT_STRUCT stat +#define MZ_FILE_STAT stat +#define MZ_FFLUSH fflush +#define MZ_FREOPEN(f, m, s) freopen(f, m, s) +#define MZ_DELETE_FILE remove +#define MZ_MKDIR(d) mkdir(d, 0755) + +#endif /* #ifdef _MSC_VER */ +#endif /* #ifdef MINIZ_NO_STDIO */ + +#ifndef CHMOD +// Upon successful completion, a value of 0 is returned. +// Otherwise, a value of -1 is returned and errno is set to indicate the error. +// int chmod(const char *path, mode_t mode); +#define CHMOD(f, m) chmod(f, m) +#endif + +#define MZ_TOLOWER(c) ((((c) >= 'A') && ((c) <= 'Z')) ? ((c) - 'A' + 'a') : (c)) + +/* Various ZIP archive enums. To completely avoid cross platform compiler + * alignment and platform endian issues, miniz.c doesn't use structs for any of + * this stuff. */ +enum { + /* ZIP archive identifiers and record sizes */ + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06054b50, + MZ_ZIP_CENTRAL_DIR_HEADER_SIG = 0x02014b50, + MZ_ZIP_LOCAL_DIR_HEADER_SIG = 0x04034b50, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE = 30, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE = 46, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE = 22, + + /* ZIP64 archive identifier and record sizes */ + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06064b50, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG = 0x07064b50, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE = 56, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE = 20, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID = 0x0001, + MZ_ZIP_DATA_DESCRIPTOR_ID = 0x08074b50, + MZ_ZIP_DATA_DESCRIPTER_SIZE64 = 24, + MZ_ZIP_DATA_DESCRIPTER_SIZE32 = 16, + + /* Central directory header record offsets */ + MZ_ZIP_CDH_SIG_OFS = 0, + MZ_ZIP_CDH_VERSION_MADE_BY_OFS = 4, + MZ_ZIP_CDH_VERSION_NEEDED_OFS = 6, + MZ_ZIP_CDH_BIT_FLAG_OFS = 8, + MZ_ZIP_CDH_METHOD_OFS = 10, + MZ_ZIP_CDH_FILE_TIME_OFS = 12, + MZ_ZIP_CDH_FILE_DATE_OFS = 14, + MZ_ZIP_CDH_CRC32_OFS = 16, + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS = 20, + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS = 24, + MZ_ZIP_CDH_FILENAME_LEN_OFS = 28, + MZ_ZIP_CDH_EXTRA_LEN_OFS = 30, + MZ_ZIP_CDH_COMMENT_LEN_OFS = 32, + MZ_ZIP_CDH_DISK_START_OFS = 34, + MZ_ZIP_CDH_INTERNAL_ATTR_OFS = 36, + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS = 38, + MZ_ZIP_CDH_LOCAL_HEADER_OFS = 42, + + /* Local directory header offsets */ + MZ_ZIP_LDH_SIG_OFS = 0, + MZ_ZIP_LDH_VERSION_NEEDED_OFS = 4, + MZ_ZIP_LDH_BIT_FLAG_OFS = 6, + MZ_ZIP_LDH_METHOD_OFS = 8, + MZ_ZIP_LDH_FILE_TIME_OFS = 10, + MZ_ZIP_LDH_FILE_DATE_OFS = 12, + MZ_ZIP_LDH_CRC32_OFS = 14, + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS = 18, + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS = 22, + MZ_ZIP_LDH_FILENAME_LEN_OFS = 26, + MZ_ZIP_LDH_EXTRA_LEN_OFS = 28, + MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR = 1 << 3, + + /* End of central directory offsets */ + MZ_ZIP_ECDH_SIG_OFS = 0, + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS = 4, + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS = 6, + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 8, + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS = 10, + MZ_ZIP_ECDH_CDIR_SIZE_OFS = 12, + MZ_ZIP_ECDH_CDIR_OFS_OFS = 16, + MZ_ZIP_ECDH_COMMENT_SIZE_OFS = 20, + + /* ZIP64 End of central directory locator offsets */ + MZ_ZIP64_ECDL_SIG_OFS = 0, /* 4 bytes */ + MZ_ZIP64_ECDL_NUM_DISK_CDIR_OFS = 4, /* 4 bytes */ + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS = 8, /* 8 bytes */ + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS = 16, /* 4 bytes */ + + /* ZIP64 End of central directory header offsets */ + MZ_ZIP64_ECDH_SIG_OFS = 0, /* 4 bytes */ + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS = 4, /* 8 bytes */ + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS = 12, /* 2 bytes */ + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS = 14, /* 2 bytes */ + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS = 16, /* 4 bytes */ + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS = 20, /* 4 bytes */ + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 24, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS = 32, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_SIZE_OFS = 40, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_OFS_OFS = 48, /* 8 bytes */ + MZ_ZIP_VERSION_MADE_BY_DOS_FILESYSTEM_ID = 0, + MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG = 0x10, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED = 1, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG = 32, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION = 64, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED = 8192, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8 = 1 << 11 +}; + +typedef struct { + void *m_p; + size_t m_size, m_capacity; + mz_uint m_element_size; +} mz_zip_array; + +struct mz_zip_internal_state_tag { + mz_zip_array m_central_dir; + mz_zip_array m_central_dir_offsets; + mz_zip_array m_sorted_central_dir_offsets; + + /* The flags passed in when the archive is initially opened. */ + uint32_t m_init_flags; + + /* MZ_TRUE if the archive has a zip64 end of central directory headers, etc. + */ + mz_bool m_zip64; + + /* MZ_TRUE if we found zip64 extended info in the central directory (m_zip64 + * will also be slammed to true too, even if we didn't find a zip64 end of + * central dir header, etc.) */ + mz_bool m_zip64_has_extended_info_fields; + + /* These fields are used by the file, FILE, memory, and memory/heap read/write + * helpers. */ + MZ_FILE *m_pFile; + mz_uint64 m_file_archive_start_ofs; + + void *m_pMem; + size_t m_mem_size; + size_t m_mem_capacity; +}; + +#define MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(array_ptr, element_size) \ + (array_ptr)->m_element_size = element_size + +#if defined(DEBUG) || defined(_DEBUG) +static MZ_FORCEINLINE mz_uint +mz_zip_array_range_check(const mz_zip_array *pArray, mz_uint index) { + MZ_ASSERT(index < pArray->m_size); + return index; +} +#define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \ + ((element_type *)((array_ptr) \ + ->m_p))[mz_zip_array_range_check(array_ptr, index)] +#else +#define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \ + ((element_type *)((array_ptr)->m_p))[index] +#endif + +static MZ_FORCEINLINE void mz_zip_array_init(mz_zip_array *pArray, + mz_uint32 element_size) { + memset(pArray, 0, sizeof(mz_zip_array)); + pArray->m_element_size = element_size; +} + +static MZ_FORCEINLINE void mz_zip_array_clear(mz_zip_archive *pZip, + mz_zip_array *pArray) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pArray->m_p); + memset(pArray, 0, sizeof(mz_zip_array)); +} + +static mz_bool mz_zip_array_ensure_capacity(mz_zip_archive *pZip, + mz_zip_array *pArray, + size_t min_new_capacity, + mz_uint growing) { + void *pNew_p; + size_t new_capacity = min_new_capacity; + MZ_ASSERT(pArray->m_element_size); + if (pArray->m_capacity >= min_new_capacity) + return MZ_TRUE; + if (growing) { + new_capacity = MZ_MAX(1, pArray->m_capacity); + while (new_capacity < min_new_capacity) + new_capacity *= 2; + } + if (NULL == (pNew_p = pZip->m_pRealloc(pZip->m_pAlloc_opaque, pArray->m_p, + pArray->m_element_size, new_capacity))) + return MZ_FALSE; + pArray->m_p = pNew_p; + pArray->m_capacity = new_capacity; + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_array_reserve(mz_zip_archive *pZip, + mz_zip_array *pArray, + size_t new_capacity, + mz_uint growing) { + if (new_capacity > pArray->m_capacity) { + if (!mz_zip_array_ensure_capacity(pZip, pArray, new_capacity, growing)) + return MZ_FALSE; + } + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_array_resize(mz_zip_archive *pZip, + mz_zip_array *pArray, + size_t new_size, + mz_uint growing) { + if (new_size > pArray->m_capacity) { + if (!mz_zip_array_ensure_capacity(pZip, pArray, new_size, growing)) + return MZ_FALSE; + } + pArray->m_size = new_size; + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_array_ensure_room(mz_zip_archive *pZip, + mz_zip_array *pArray, + size_t n) { + return mz_zip_array_reserve(pZip, pArray, pArray->m_size + n, MZ_TRUE); +} + +static MZ_FORCEINLINE mz_bool mz_zip_array_push_back(mz_zip_archive *pZip, + mz_zip_array *pArray, + const void *pElements, + size_t n) { + size_t orig_size = pArray->m_size; + if (!mz_zip_array_resize(pZip, pArray, orig_size + n, MZ_TRUE)) + return MZ_FALSE; + if (n > 0) + memcpy((mz_uint8 *)pArray->m_p + orig_size * pArray->m_element_size, + pElements, n * pArray->m_element_size); + return MZ_TRUE; +} + +#ifndef MINIZ_NO_TIME +static MZ_TIME_T mz_zip_dos_to_time_t(int dos_time, int dos_date) { + struct tm tm; + memset(&tm, 0, sizeof(tm)); + tm.tm_isdst = -1; + tm.tm_year = ((dos_date >> 9) & 127) + 1980 - 1900; + tm.tm_mon = ((dos_date >> 5) & 15) - 1; + tm.tm_mday = dos_date & 31; + tm.tm_hour = (dos_time >> 11) & 31; + tm.tm_min = (dos_time >> 5) & 63; + tm.tm_sec = (dos_time << 1) & 62; + return mktime(&tm); +} + +#ifndef MINIZ_NO_ARCHIVE_WRITING_APIS +static void mz_zip_time_t_to_dos_time(MZ_TIME_T time, mz_uint16 *pDOS_time, + mz_uint16 *pDOS_date) { +#ifdef _MSC_VER + struct tm tm_struct; + struct tm *tm = &tm_struct; + errno_t err = localtime_s(tm, &time); + if (err) { + *pDOS_date = 0; + *pDOS_time = 0; + return; + } +#else + struct tm *tm = localtime(&time); +#endif /* #ifdef _MSC_VER */ + + *pDOS_time = (mz_uint16)(((tm->tm_hour) << 11) + ((tm->tm_min) << 5) + + ((tm->tm_sec) >> 1)); + *pDOS_date = (mz_uint16)(((tm->tm_year + 1900 - 1980) << 9) + + ((tm->tm_mon + 1) << 5) + tm->tm_mday); +} +#endif /* MINIZ_NO_ARCHIVE_WRITING_APIS */ + +#ifndef MINIZ_NO_STDIO +#ifndef MINIZ_NO_ARCHIVE_WRITING_APIS +static mz_bool mz_zip_get_file_modified_time(const char *pFilename, + MZ_TIME_T *pTime) { + struct MZ_FILE_STAT_STRUCT file_stat; + + /* On Linux with x86 glibc, this call will fail on large files (I think >= + * 0x80000000 bytes) unless you compiled with _LARGEFILE64_SOURCE. Argh. */ + if (MZ_FILE_STAT(pFilename, &file_stat) != 0) + return MZ_FALSE; + + *pTime = file_stat.st_mtime; + + return MZ_TRUE; +} +#endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS*/ + +static mz_bool mz_zip_set_file_times(const char *pFilename, + MZ_TIME_T access_time, + MZ_TIME_T modified_time) { + struct utimbuf t; + + memset(&t, 0, sizeof(t)); + t.actime = access_time; + t.modtime = modified_time; + + return !utime(pFilename, &t); +} +#endif /* #ifndef MINIZ_NO_STDIO */ +#endif /* #ifndef MINIZ_NO_TIME */ + +static MZ_FORCEINLINE mz_bool mz_zip_set_error(mz_zip_archive *pZip, + mz_zip_error err_num) { + if (pZip) + pZip->m_last_error = err_num; + return MZ_FALSE; +} + +static mz_bool mz_zip_reader_init_internal(mz_zip_archive *pZip, + mz_uint flags) { + (void)flags; + if ((!pZip) || (pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!pZip->m_pAlloc) + pZip->m_pAlloc = miniz_def_alloc_func; + if (!pZip->m_pFree) + pZip->m_pFree = miniz_def_free_func; + if (!pZip->m_pRealloc) + pZip->m_pRealloc = miniz_def_realloc_func; + + pZip->m_archive_size = 0; + pZip->m_central_directory_file_ofs = 0; + pZip->m_total_files = 0; + pZip->m_last_error = MZ_ZIP_NO_ERROR; + + if (NULL == (pZip->m_pState = (mz_zip_internal_state *)pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, + sizeof(mz_uint8)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir_offsets, + sizeof(mz_uint32)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_sorted_central_dir_offsets, + sizeof(mz_uint32)); + pZip->m_pState->m_init_flags = flags; + pZip->m_pState->m_zip64 = MZ_FALSE; + pZip->m_pState->m_zip64_has_extended_info_fields = MZ_FALSE; + + pZip->m_zip_mode = MZ_ZIP_MODE_READING; + + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_reader_filename_less(const mz_zip_array *pCentral_dir_array, + const mz_zip_array *pCentral_dir_offsets, + mz_uint l_index, mz_uint r_index) { + const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, + l_index)), + *pE; + const mz_uint8 *pR = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, r_index)); + mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS), + r_len = MZ_READ_LE16(pR + MZ_ZIP_CDH_FILENAME_LEN_OFS); + mz_uint8 l = 0, r = 0; + pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pR += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pE = pL + MZ_MIN(l_len, r_len); + while (pL < pE) { + if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) + break; + pL++; + pR++; + } + return (pL == pE) ? (l_len < r_len) : (l < r); +} + +#define MZ_SWAP_UINT32(a, b) \ + do { \ + mz_uint32 t = a; \ + a = b; \ + b = t; \ + } \ + MZ_MACRO_END + +/* Heap sort of lowercased filenames, used to help accelerate plain central + * directory searches by mz_zip_reader_locate_file(). (Could also use qsort(), + * but it could allocate memory.) */ +static void +mz_zip_reader_sort_central_dir_offsets_by_filename(mz_zip_archive *pZip) { + mz_zip_internal_state *pState = pZip->m_pState; + const mz_zip_array *pCentral_dir_offsets = &pState->m_central_dir_offsets; + const mz_zip_array *pCentral_dir = &pState->m_central_dir; + mz_uint32 *pIndices; + mz_uint32 start, end; + const mz_uint32 size = pZip->m_total_files; + + if (size <= 1U) + return; + + pIndices = &MZ_ZIP_ARRAY_ELEMENT(&pState->m_sorted_central_dir_offsets, + mz_uint32, 0); + + start = (size - 2U) >> 1U; + for (;;) { + mz_uint64 child, root = start; + for (;;) { + if ((child = (root << 1U) + 1U) >= size) + break; + child += (((child + 1U) < size) && + (mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, + pIndices[child], + pIndices[child + 1U]))); + if (!mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, + pIndices[root], pIndices[child])) + break; + MZ_SWAP_UINT32(pIndices[root], pIndices[child]); + root = child; + } + if (!start) + break; + start--; + } + + end = size - 1; + while (end > 0) { + mz_uint64 child, root = 0; + MZ_SWAP_UINT32(pIndices[end], pIndices[0]); + for (;;) { + if ((child = (root << 1U) + 1U) >= end) + break; + child += + (((child + 1U) < end) && + mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, + pIndices[child], pIndices[child + 1U])); + if (!mz_zip_reader_filename_less(pCentral_dir, pCentral_dir_offsets, + pIndices[root], pIndices[child])) + break; + MZ_SWAP_UINT32(pIndices[root], pIndices[child]); + root = child; + } + end--; + } +} + +static mz_bool mz_zip_reader_locate_header_sig(mz_zip_archive *pZip, + mz_uint32 record_sig, + mz_uint32 record_size, + mz_int64 *pOfs) { + mz_int64 cur_file_ofs; + mz_uint32 buf_u32[4096 / sizeof(mz_uint32)]; + mz_uint8 *pBuf = (mz_uint8 *)buf_u32; + + /* Basic sanity checks - reject files which are too small */ + if (pZip->m_archive_size < record_size) + return MZ_FALSE; + + /* Find the record by scanning the file from the end towards the beginning. */ + cur_file_ofs = + MZ_MAX((mz_int64)pZip->m_archive_size - (mz_int64)sizeof(buf_u32), 0); + for (;;) { + int i, + n = (int)MZ_MIN(sizeof(buf_u32), pZip->m_archive_size - cur_file_ofs); + + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, n) != (mz_uint)n) + return MZ_FALSE; + + for (i = n - 4; i >= 0; --i) { + mz_uint s = MZ_READ_LE32(pBuf + i); + if (s == record_sig) { + if ((pZip->m_archive_size - (cur_file_ofs + i)) >= record_size) + break; + } + } + + if (i >= 0) { + cur_file_ofs += i; + break; + } + + /* Give up if we've searched the entire file, or we've gone back "too far" + * (~64kb) */ + if ((!cur_file_ofs) || ((pZip->m_archive_size - cur_file_ofs) >= + (MZ_UINT16_MAX + record_size))) + return MZ_FALSE; + + cur_file_ofs = MZ_MAX(cur_file_ofs - (sizeof(buf_u32) - 3), 0); + } + + *pOfs = cur_file_ofs; + return MZ_TRUE; +} + +static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, + mz_uint flags) { + mz_uint cdir_size = 0, cdir_entries_on_this_disk = 0, num_this_disk = 0, + cdir_disk_index = 0; + mz_uint64 cdir_ofs = 0; + mz_int64 cur_file_ofs = 0; + const mz_uint8 *p; + + mz_uint32 buf_u32[4096 / sizeof(mz_uint32)]; + mz_uint8 *pBuf = (mz_uint8 *)buf_u32; + mz_bool sort_central_dir = + ((flags & MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0); + mz_uint32 zip64_end_of_central_dir_locator_u32 + [(MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pZip64_locator = (mz_uint8 *)zip64_end_of_central_dir_locator_u32; + + mz_uint32 zip64_end_of_central_dir_header_u32 + [(MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pZip64_end_of_central_dir = + (mz_uint8 *)zip64_end_of_central_dir_header_u32; + + mz_uint64 zip64_end_of_central_dir_ofs = 0; + + /* Basic sanity checks - reject files which are too small, and check the first + * 4 bytes of the file to make sure a local header is there. */ + if (pZip->m_archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (!mz_zip_reader_locate_header_sig( + pZip, MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE, &cur_file_ofs)) + return mz_zip_set_error(pZip, MZ_ZIP_FAILED_FINDING_CENTRAL_DIR); + + /* Read and verify the end of central directory record. */ + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_SIG_OFS) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (cur_file_ofs >= (MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) { + if (pZip->m_pRead(pZip->m_pIO_opaque, + cur_file_ofs - MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE, + pZip64_locator, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) == + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) { + if (MZ_READ_LE32(pZip64_locator + MZ_ZIP64_ECDL_SIG_OFS) == + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG) { + zip64_end_of_central_dir_ofs = MZ_READ_LE64( + pZip64_locator + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS); + if (zip64_end_of_central_dir_ofs > + (pZip->m_archive_size - MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (pZip->m_pRead(pZip->m_pIO_opaque, zip64_end_of_central_dir_ofs, + pZip64_end_of_central_dir, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) == + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) { + if (MZ_READ_LE32(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_SIG_OFS) == + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG) { + pZip->m_pState->m_zip64 = MZ_TRUE; + } + } + } + } + } + + pZip->m_total_files = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS); + cdir_entries_on_this_disk = + MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS); + num_this_disk = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS); + cdir_disk_index = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS); + cdir_size = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_SIZE_OFS); + cdir_ofs = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_OFS_OFS); + + if (pZip->m_pState->m_zip64) { + mz_uint32 zip64_total_num_of_disks = + MZ_READ_LE32(pZip64_locator + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS); + mz_uint64 zip64_cdir_total_entries = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS); + mz_uint64 zip64_cdir_total_entries_on_this_disk = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS); + mz_uint64 zip64_size_of_end_of_central_dir_record = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS); + mz_uint64 zip64_size_of_central_directory = + MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_SIZE_OFS); + + if (zip64_size_of_end_of_central_dir_record < + (MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - 12)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (zip64_total_num_of_disks != 1U) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + /* Check for miniz's practical limits */ + if (zip64_cdir_total_entries > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + pZip->m_total_files = (mz_uint32)zip64_cdir_total_entries; + + if (zip64_cdir_total_entries_on_this_disk > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + cdir_entries_on_this_disk = + (mz_uint32)zip64_cdir_total_entries_on_this_disk; + + /* Check for miniz's current practical limits (sorry, this should be enough + * for millions of files) */ + if (zip64_size_of_central_directory > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + cdir_size = (mz_uint32)zip64_size_of_central_directory; + + num_this_disk = MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS); + + cdir_disk_index = MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS); + + cdir_ofs = + MZ_READ_LE64(pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_OFS_OFS); + } + + if (pZip->m_total_files != cdir_entries_on_this_disk) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (((num_this_disk | cdir_disk_index) != 0) && + ((num_this_disk != 1) || (cdir_disk_index != 1))) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (cdir_size < pZip->m_total_files * MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((cdir_ofs + (mz_uint64)cdir_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pZip->m_central_directory_file_ofs = cdir_ofs; + + if (pZip->m_total_files) { + mz_uint i, n; + /* Read the entire central directory into a heap block, and allocate another + * heap block to hold the unsorted central dir file record offsets, and + * possibly another to hold the sorted indices. */ + if ((!mz_zip_array_resize(pZip, &pZip->m_pState->m_central_dir, cdir_size, + MZ_FALSE)) || + (!mz_zip_array_resize(pZip, &pZip->m_pState->m_central_dir_offsets, + pZip->m_total_files, MZ_FALSE))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (sort_central_dir) { + if (!mz_zip_array_resize(pZip, + &pZip->m_pState->m_sorted_central_dir_offsets, + pZip->m_total_files, MZ_FALSE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (pZip->m_pRead(pZip->m_pIO_opaque, cdir_ofs, + pZip->m_pState->m_central_dir.m_p, + cdir_size) != cdir_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + /* Now create an index into the central directory file records, do some + * basic sanity checking on each record */ + p = (const mz_uint8 *)pZip->m_pState->m_central_dir.m_p; + for (n = cdir_size, i = 0; i < pZip->m_total_files; ++i) { + mz_uint total_header_size, disk_index, bit_flags, filename_size, + ext_data_size; + mz_uint64 comp_size, decomp_size, local_header_ofs; + + if ((n < MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) || + (MZ_READ_LE32(p) != MZ_ZIP_CENTRAL_DIR_HEADER_SIG)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, + i) = + (mz_uint32)(p - (const mz_uint8 *)pZip->m_pState->m_central_dir.m_p); + + if (sort_central_dir) + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_sorted_central_dir_offsets, + mz_uint32, i) = i; + + comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS); + decomp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS); + local_header_ofs = MZ_READ_LE32(p + MZ_ZIP_CDH_LOCAL_HEADER_OFS); + filename_size = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + ext_data_size = MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS); + + if ((!pZip->m_pState->m_zip64_has_extended_info_fields) && + (ext_data_size) && + (MZ_MAX(MZ_MAX(comp_size, decomp_size), local_header_ofs) == + MZ_UINT32_MAX)) { + /* Attempt to find zip64 extended information field in the entry's extra + * data */ + mz_uint32 extra_size_remaining = ext_data_size; + + if (extra_size_remaining) { + const mz_uint8 *pExtra_data; + void *buf = NULL; + + if (MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + ext_data_size > + n) { + buf = MZ_MALLOC(ext_data_size); + if (buf == NULL) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (pZip->m_pRead(pZip->m_pIO_opaque, + cdir_ofs + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + filename_size, + buf, ext_data_size) != ext_data_size) { + MZ_FREE(buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + pExtra_data = (mz_uint8 *)buf; + } else { + pExtra_data = p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size; + } + + do { + mz_uint32 field_id; + mz_uint32 field_data_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + MZ_FREE(buf); + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + + if ((field_data_size + sizeof(mz_uint16) * 2) > + extra_size_remaining) { + MZ_FREE(buf); + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + /* Ok, the archive didn't have any zip64 headers but it uses a + * zip64 extended information field so mark it as zip64 anyway + * (this can occur with infozip's zip util when it reads + * compresses files from stdin). */ + pZip->m_pState->m_zip64 = MZ_TRUE; + pZip->m_pState->m_zip64_has_extended_info_fields = MZ_TRUE; + break; + } + + pExtra_data += sizeof(mz_uint16) * 2 + field_data_size; + extra_size_remaining = + extra_size_remaining - sizeof(mz_uint16) * 2 - field_data_size; + } while (extra_size_remaining); + + MZ_FREE(buf); + } + } + + /* I've seen archives that aren't marked as zip64 that uses zip64 ext + * data, argh */ + if ((comp_size != MZ_UINT32_MAX) && (decomp_size != MZ_UINT32_MAX)) { + if (((!MZ_READ_LE32(p + MZ_ZIP_CDH_METHOD_OFS)) && + (decomp_size != comp_size)) || + (decomp_size && !comp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + disk_index = MZ_READ_LE16(p + MZ_ZIP_CDH_DISK_START_OFS); + if ((disk_index == MZ_UINT16_MAX) || + ((disk_index != num_this_disk) && (disk_index != 1))) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (comp_size != MZ_UINT32_MAX) { + if (((mz_uint64)MZ_READ_LE32(p + MZ_ZIP_CDH_LOCAL_HEADER_OFS) + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + bit_flags = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + if (bit_flags & MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + if ((total_header_size = MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS)) > + n) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + n -= total_header_size; + p += total_header_size; + } + } + + if (sort_central_dir) + mz_zip_reader_sort_central_dir_offsets_by_filename(pZip); + + return MZ_TRUE; +} + +void mz_zip_zero_struct(mz_zip_archive *pZip) { + if (pZip) + MZ_CLEAR_OBJ(*pZip); +} + +static mz_bool mz_zip_reader_end_internal(mz_zip_archive *pZip, + mz_bool set_last_error) { + mz_bool status = MZ_TRUE; + + if (!pZip) + return MZ_FALSE; + + if ((!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || + (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) { + if (set_last_error) + pZip->m_last_error = MZ_ZIP_INVALID_PARAMETER; + + return MZ_FALSE; + } + + if (pZip->m_pState) { + mz_zip_internal_state *pState = pZip->m_pState; + pZip->m_pState = NULL; + + mz_zip_array_clear(pZip, &pState->m_central_dir); + mz_zip_array_clear(pZip, &pState->m_central_dir_offsets); + mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets); + +#ifndef MINIZ_NO_STDIO + if (pState->m_pFile) { + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (MZ_FCLOSE(pState->m_pFile) == EOF) { + if (set_last_error) + pZip->m_last_error = MZ_ZIP_FILE_CLOSE_FAILED; + status = MZ_FALSE; + } + } + pState->m_pFile = NULL; + } +#endif /* #ifndef MINIZ_NO_STDIO */ + + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + } + pZip->m_zip_mode = MZ_ZIP_MODE_INVALID; + + return status; +} + +mz_bool mz_zip_reader_end(mz_zip_archive *pZip) { + return mz_zip_reader_end_internal(pZip, MZ_TRUE); +} +mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, + mz_uint flags) { + if ((!pZip) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_USER; + pZip->m_archive_size = size; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +static size_t mz_zip_mem_read_func(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *)pOpaque; + size_t s = (file_ofs >= pZip->m_archive_size) + ? 0 + : (size_t)MZ_MIN(pZip->m_archive_size - file_ofs, n); + memcpy(pBuf, (const mz_uint8 *)pZip->m_pState->m_pMem + file_ofs, s); + return s; +} + +mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, + size_t size, mz_uint flags) { + if (!pMem) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_MEMORY; + pZip->m_archive_size = size; + pZip->m_pRead = mz_zip_mem_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pNeeds_keepalive = NULL; + +#ifdef __cplusplus + pZip->m_pState->m_pMem = const_cast(pMem); +#else + pZip->m_pState->m_pMem = (void *)pMem; +#endif + + pZip->m_pState->m_mem_size = size; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +#ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_read_func(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *)pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile); + + file_ofs += pZip->m_pState->m_file_archive_start_ofs; + + if (((mz_int64)file_ofs < 0) || + (((cur_ofs != (mz_int64)file_ofs)) && + (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64)file_ofs, SEEK_SET)))) + return 0; + + return MZ_FREAD(pBuf, 1, n, pZip->m_pState->m_pFile); +} + +mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, const char *pFilename, + mz_uint32 flags) { + return mz_zip_reader_init_file_v2(pZip, pFilename, flags, 0, 0); +} + +mz_bool mz_zip_reader_init_file_v2(mz_zip_archive *pZip, const char *pFilename, + mz_uint flags, mz_uint64 file_start_ofs, + mz_uint64 archive_size) { + mz_uint64 file_size; + MZ_FILE *pFile; + + if ((!pZip) || (!pFilename) || + ((archive_size) && + (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pFile = MZ_FOPEN(pFilename, "rb"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + file_size = archive_size; + if (!file_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + } + + file_size = MZ_FTELL64(pFile); + } + + /* TODO: Better sanity check archive_size and the # of actual remaining bytes + */ + + if (file_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) { + MZ_FCLOSE(pFile); + return MZ_FALSE; + } + + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + pZip->m_pRead = mz_zip_file_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = file_size; + pZip->m_pState->m_file_archive_start_ofs = file_start_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_init_file_v2_rpb(mz_zip_archive *pZip, + const char *pFilename, mz_uint flags, + mz_uint64 file_start_ofs, + mz_uint64 archive_size) { + mz_uint64 file_size; + MZ_FILE *pFile; + + if ((!pZip) || (!pFilename) || + ((archive_size) && + (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pFile = MZ_FOPEN(pFilename, "r+b"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + file_size = archive_size; + if (!file_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + } + + file_size = MZ_FTELL64(pFile); + } + + /* TODO: Better sanity check archive_size and the # of actual remaining bytes + */ + + if (file_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) { + MZ_FCLOSE(pFile); + return MZ_FALSE; + } + + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + pZip->m_pRead = mz_zip_file_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = file_size; + pZip->m_pState->m_file_archive_start_ofs = file_start_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint64 archive_size, mz_uint flags) { + mz_uint64 cur_file_ofs; + + if ((!pZip) || (!pFile)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + cur_file_ofs = MZ_FTELL64(pFile); + + if (!archive_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + + archive_size = MZ_FTELL64(pFile) - cur_file_ofs; + + if (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_CFILE; + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = archive_size; + pZip->m_pState->m_file_archive_start_ofs = cur_file_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +#endif /* #ifndef MINIZ_NO_STDIO */ + +static MZ_FORCEINLINE const mz_uint8 *mz_zip_get_cdh(mz_zip_archive *pZip, + mz_uint file_index) { + if ((!pZip) || (!pZip->m_pState) || (file_index >= pZip->m_total_files)) + return NULL; + return &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, + file_index)); +} + +mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint m_bit_flag; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + return (m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) != 0; +} + +mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint bit_flag; + mz_uint method; + + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS); + bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + + if ((method != 0) && (method != MZ_DEFLATED)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + return MZ_FALSE; + } + + if (bit_flag & (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + return MZ_FALSE; + } + + if (bit_flag & MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint filename_len, attribute_mapping_id, external_attr; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + filename_len = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + if (filename_len) { + if (*(p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_len - 1) == '/') + return MZ_TRUE; + } + + /* Bugfix: This code was also checking if the internal attribute was non-zero, + * which wasn't correct. */ + /* Most/all zip writers (hopefully) set DOS file/directory attributes in the + * low 16-bits, so check for the DOS directory flag and ignore the source OS + * ID in the created by field. */ + /* FIXME: Remove this check? Is it necessary - we already check the filename. + */ + attribute_mapping_id = MZ_READ_LE16(p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS) >> 8; + (void)attribute_mapping_id; + + external_attr = MZ_READ_LE32(p + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS); + if ((external_attr & MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG) != 0) { + return MZ_TRUE; + } + + return MZ_FALSE; +} + +static mz_bool mz_zip_file_stat_internal(mz_zip_archive *pZip, + mz_uint file_index, + const mz_uint8 *pCentral_dir_header, + mz_zip_archive_file_stat *pStat, + mz_bool *pFound_zip64_extra_data) { + mz_uint n; + const mz_uint8 *p = pCentral_dir_header; + + if (pFound_zip64_extra_data) + *pFound_zip64_extra_data = MZ_FALSE; + + if ((!p) || (!pStat)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Extract fields from the central directory record. */ + pStat->m_file_index = file_index; + pStat->m_central_dir_ofs = MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir_offsets, mz_uint32, file_index); + pStat->m_version_made_by = MZ_READ_LE16(p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS); + pStat->m_version_needed = MZ_READ_LE16(p + MZ_ZIP_CDH_VERSION_NEEDED_OFS); + pStat->m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + pStat->m_method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS); +#ifndef MINIZ_NO_TIME + pStat->m_time = + mz_zip_dos_to_time_t(MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_TIME_OFS), + MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_DATE_OFS)); +#endif + pStat->m_crc32 = MZ_READ_LE32(p + MZ_ZIP_CDH_CRC32_OFS); + pStat->m_comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS); + pStat->m_uncomp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS); + pStat->m_internal_attr = MZ_READ_LE16(p + MZ_ZIP_CDH_INTERNAL_ATTR_OFS); + pStat->m_external_attr = MZ_READ_LE32(p + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS); + pStat->m_local_header_ofs = MZ_READ_LE32(p + MZ_ZIP_CDH_LOCAL_HEADER_OFS); + + /* Copy as much of the filename and comment as possible. */ + n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE - 1); + memcpy(pStat->m_filename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n); + pStat->m_filename[n] = '\0'; + + n = MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS); + n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE - 1); + pStat->m_comment_size = n; + memcpy(pStat->m_comment, + p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS), + n); + pStat->m_comment[n] = '\0'; + + /* Set some flags for convienance */ + pStat->m_is_directory = mz_zip_reader_is_file_a_directory(pZip, file_index); + pStat->m_is_encrypted = mz_zip_reader_is_file_encrypted(pZip, file_index); + pStat->m_is_supported = mz_zip_reader_is_file_supported(pZip, file_index); + + /* See if we need to read any zip64 extended information fields. */ + /* Confusingly, these zip64 fields can be present even on non-zip64 archives + * (Debian zip on a huge files from stdin piped to stdout creates them). */ + if (MZ_MAX(MZ_MAX(pStat->m_comp_size, pStat->m_uncomp_size), + pStat->m_local_header_ofs) == MZ_UINT32_MAX) { + /* Attempt to find zip64 extended information field in the entry's extra + * data */ + mz_uint32 extra_size_remaining = MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS); + + if (extra_size_remaining) { + const mz_uint8 *pExtra_data = + p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + + do { + mz_uint32 field_id; + mz_uint32 field_data_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + + if ((field_data_size + sizeof(mz_uint16) * 2) > extra_size_remaining) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pField_data = pExtra_data + sizeof(mz_uint16) * 2; + mz_uint32 field_data_remaining = field_data_size; + + if (pFound_zip64_extra_data) + *pFound_zip64_extra_data = MZ_TRUE; + + if (pStat->m_uncomp_size == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_uncomp_size = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + if (pStat->m_comp_size == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_comp_size = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + if (pStat->m_local_header_ofs == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_local_header_ofs = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + (void)pField_data; // unused + + field_data_remaining -= sizeof(mz_uint64); + (void)field_data_remaining; // unused + } + + break; + } + + pExtra_data += sizeof(mz_uint16) * 2 + field_data_size; + extra_size_remaining = + extra_size_remaining - sizeof(mz_uint16) * 2 - field_data_size; + } while (extra_size_remaining); + } + } + + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_string_equal(const char *pA, + const char *pB, mz_uint len, + mz_uint flags) { + mz_uint i; + if (flags & MZ_ZIP_FLAG_CASE_SENSITIVE) + return 0 == memcmp(pA, pB, len); + for (i = 0; i < len; ++i) + if (MZ_TOLOWER(pA[i]) != MZ_TOLOWER(pB[i])) + return MZ_FALSE; + return MZ_TRUE; +} + +static MZ_FORCEINLINE int +mz_zip_filename_compare(const mz_zip_array *pCentral_dir_array, + const mz_zip_array *pCentral_dir_offsets, + mz_uint l_index, const char *pR, mz_uint r_len) { + const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, + l_index)), + *pE; + mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS); + mz_uint8 l = 0, r = 0; + pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pE = pL + MZ_MIN(l_len, r_len); + while (pL < pE) { + if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) + break; + pL++; + pR++; + } + return (pL == pE) ? (int)(l_len - r_len) : (l - r); +} + +static mz_bool mz_zip_locate_file_binary_search(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 *pIndex) { + mz_zip_internal_state *pState = pZip->m_pState; + const mz_zip_array *pCentral_dir_offsets = &pState->m_central_dir_offsets; + const mz_zip_array *pCentral_dir = &pState->m_central_dir; + mz_uint32 *pIndices = &MZ_ZIP_ARRAY_ELEMENT( + &pState->m_sorted_central_dir_offsets, mz_uint32, 0); + const uint32_t size = pZip->m_total_files; + const mz_uint filename_len = (mz_uint)strlen(pFilename); + + if (pIndex) + *pIndex = 0; + + if (size) { + /* yes I could use uint32_t's, but then we would have to add some special + * case checks in the loop, argh, and */ + /* honestly the major expense here on 32-bit CPU's will still be the + * filename compare */ + mz_int64 l = 0, h = (mz_int64)size - 1; + + while (l <= h) { + mz_int64 m = l + ((h - l) >> 1); + uint32_t file_index = pIndices[(uint32_t)m]; + + int comp = mz_zip_filename_compare(pCentral_dir, pCentral_dir_offsets, + file_index, pFilename, filename_len); + if (!comp) { + if (pIndex) + *pIndex = file_index; + return MZ_TRUE; + } else if (comp < 0) + l = m + 1; + else + h = m - 1; + } + } + + return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND); +} + +int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, + const char *pComment, mz_uint flags) { + mz_uint32 index; + if (!mz_zip_reader_locate_file_v2(pZip, pName, pComment, flags, &index)) + return -1; + else + return (int)index; +} + +mz_bool mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, const char *pName, + const char *pComment, mz_uint flags, + mz_uint32 *pIndex) { + mz_uint file_index; + size_t name_len, comment_len; + + if (pIndex) + *pIndex = 0; + + if ((!pZip) || (!pZip->m_pState) || (!pName)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* See if we can use a binary search */ + if (((pZip->m_pState->m_init_flags & + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0) && + (pZip->m_zip_mode == MZ_ZIP_MODE_READING) && + ((flags & (MZ_ZIP_FLAG_IGNORE_PATH | MZ_ZIP_FLAG_CASE_SENSITIVE)) == 0) && + (!pComment) && (pZip->m_pState->m_sorted_central_dir_offsets.m_size)) { + return mz_zip_locate_file_binary_search(pZip, pName, pIndex); + } + + /* Locate the entry by scanning the entire central directory */ + name_len = strlen(pName); + if (name_len > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + comment_len = pComment ? strlen(pComment) : 0; + if (comment_len > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + for (file_index = 0; file_index < pZip->m_total_files; file_index++) { + const mz_uint8 *pHeader = &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, mz_uint32, + file_index)); + mz_uint filename_len = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_FILENAME_LEN_OFS); + const char *pFilename = + (const char *)pHeader + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + if (filename_len < name_len) + continue; + if (comment_len) { + mz_uint file_extra_len = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_EXTRA_LEN_OFS), + file_comment_len = + MZ_READ_LE16(pHeader + MZ_ZIP_CDH_COMMENT_LEN_OFS); + const char *pFile_comment = pFilename + filename_len + file_extra_len; + if ((file_comment_len != comment_len) || + (!mz_zip_string_equal(pComment, pFile_comment, file_comment_len, + flags))) + continue; + } + if ((flags & MZ_ZIP_FLAG_IGNORE_PATH) && (filename_len)) { + int ofs = filename_len - 1; + do { + if ((pFilename[ofs] == '/') || (pFilename[ofs] == '\\') || + (pFilename[ofs] == ':')) + break; + } while (--ofs >= 0); + ofs++; + pFilename += ofs; + filename_len -= ofs; + } + if ((filename_len == name_len) && + (mz_zip_string_equal(pName, pFilename, filename_len, flags))) { + if (pIndex) + *pIndex = file_index; + return MZ_TRUE; + } + } + + return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND); +} + +static mz_bool mz_zip_reader_extract_to_mem_no_alloc1( + mz_zip_archive *pZip, mz_uint file_index, void *pBuf, size_t buf_size, + mz_uint flags, void *pUser_read_buf, size_t user_read_buf_size, + const mz_zip_archive_file_stat *st) { + int status = TINFL_STATUS_DONE; + mz_uint64 needed_size, cur_file_ofs, comp_remaining, + out_buf_ofs = 0, read_buf_size, read_buf_ofs = 0, read_buf_avail; + mz_zip_archive_file_stat file_stat; + void *pRead_buf; + mz_uint32 + local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *)local_header_u32; + tinfl_decompressor inflator; + + if ((!pZip) || (!pZip->m_pState) || ((buf_size) && (!pBuf)) || + ((user_read_buf_size) && (!pUser_read_buf)) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (st) { + file_stat = *st; + } else if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + /* Ensure supplied output buffer is large enough. */ + needed_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) ? file_stat.m_comp_size + : file_stat.m_uncomp_size; + if (buf_size < needed_size) + return mz_zip_set_error(pZip, MZ_ZIP_BUF_TOO_SMALL); + + /* Read and parse the local directory entry. */ + cur_file_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed data. */ + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, + (size_t)needed_size) != needed_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) == 0) { + if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *)pBuf, + (size_t)file_stat.m_uncomp_size) != file_stat.m_crc32) + return mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED); + } +#endif + + return MZ_TRUE; + } + + /* Decompress the file either directly from memory or from a file input + * buffer. */ + tinfl_init(&inflator); + + if (pZip->m_pState->m_pMem) { + /* Read directly from the archive in memory. */ + pRead_buf = (mz_uint8 *)pZip->m_pState->m_pMem + cur_file_ofs; + read_buf_size = read_buf_avail = file_stat.m_comp_size; + comp_remaining = 0; + } else if (pUser_read_buf) { + /* Use a user provided read buffer. */ + if (!user_read_buf_size) + return MZ_FALSE; + pRead_buf = (mz_uint8 *)pUser_read_buf; + read_buf_size = user_read_buf_size; + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } else { + /* Temporarily allocate a read buffer. */ + read_buf_size = + MZ_MIN(file_stat.m_comp_size, (mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE); + if (((sizeof(size_t) == sizeof(mz_uint32))) && (read_buf_size > 0x7FFFFFFF)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t)read_buf_size))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } + + do { + /* The size_t cast here should be OK because we've verified that the output + * buffer is >= file_stat.m_uncomp_size above */ + size_t in_buf_size, + out_buf_size = (size_t)(file_stat.m_uncomp_size - out_buf_ofs); + if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t)read_buf_avail) != read_buf_avail) { + status = TINFL_STATUS_FAILED; + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + break; + } + cur_file_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + read_buf_ofs = 0; + } + in_buf_size = (size_t)read_buf_avail; + status = tinfl_decompress( + &inflator, (mz_uint8 *)pRead_buf + read_buf_ofs, &in_buf_size, + (mz_uint8 *)pBuf, (mz_uint8 *)pBuf + out_buf_ofs, &out_buf_size, + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF | + (comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0)); + read_buf_avail -= in_buf_size; + read_buf_ofs += in_buf_size; + out_buf_ofs += out_buf_size; + } while (status == TINFL_STATUS_NEEDS_MORE_INPUT); + + if (status == TINFL_STATUS_DONE) { + /* Make sure the entire file was decompressed, and check its CRC. */ + if (out_buf_ofs != file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + status = TINFL_STATUS_FAILED; + } +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *)pBuf, + (size_t)file_stat.m_uncomp_size) != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED); + status = TINFL_STATUS_FAILED; + } +#endif + } + + if ((!pZip->m_pState->m_pMem) && (!pUser_read_buf)) + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + + return status == TINFL_STATUS_DONE; +} + +mz_bool mz_zip_reader_extract_to_mem_no_alloc(mz_zip_archive *pZip, + mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags, + void *pUser_read_buf, + size_t user_read_buf_size) { + return mz_zip_reader_extract_to_mem_no_alloc1(pZip, file_index, pBuf, + buf_size, flags, pUser_read_buf, + user_read_buf_size, NULL); +} + +mz_bool mz_zip_reader_extract_file_to_mem_no_alloc( + mz_zip_archive *pZip, const char *pFilename, void *pBuf, size_t buf_size, + mz_uint flags, void *pUser_read_buf, size_t user_read_buf_size) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) + return MZ_FALSE; + return mz_zip_reader_extract_to_mem_no_alloc(pZip, file_index, pBuf, buf_size, + flags, pUser_read_buf, + user_read_buf_size); +} + +mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive *pZip, mz_uint file_index, + void *pBuf, size_t buf_size, + mz_uint flags) { + return mz_zip_reader_extract_to_mem_no_alloc(pZip, file_index, pBuf, buf_size, + flags, NULL, 0); +} + +mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, + const char *pFilename, void *pBuf, + size_t buf_size, mz_uint flags) { + return mz_zip_reader_extract_file_to_mem_no_alloc(pZip, pFilename, pBuf, + buf_size, flags, NULL, 0); +} + +void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index, + size_t *pSize, mz_uint flags) { + mz_zip_archive_file_stat file_stat; + mz_uint64 alloc_size; + void *pBuf; + + if (pSize) + *pSize = 0; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return NULL; + + alloc_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) ? file_stat.m_comp_size + : file_stat.m_uncomp_size; + if (((sizeof(size_t) == sizeof(mz_uint32))) && (alloc_size > 0x7FFFFFFF)) { + mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + return NULL; + } + + if (NULL == + (pBuf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, (size_t)alloc_size))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return NULL; + } + + if (!mz_zip_reader_extract_to_mem_no_alloc1(pZip, file_index, pBuf, + (size_t)alloc_size, flags, NULL, + 0, &file_stat)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return NULL; + } + + if (pSize) + *pSize = (size_t)alloc_size; + return pBuf; +} + +void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, + const char *pFilename, size_t *pSize, + mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) { + if (pSize) + *pSize = 0; + return MZ_FALSE; + } + return mz_zip_reader_extract_to_heap(pZip, file_index, pSize, flags); +} + +mz_bool mz_zip_reader_extract_to_callback(mz_zip_archive *pZip, + mz_uint file_index, + mz_file_write_func pCallback, + void *pOpaque, mz_uint flags) { + int status = TINFL_STATUS_DONE; +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + mz_uint file_crc32 = MZ_CRC32_INIT; +#endif + mz_uint64 read_buf_size, read_buf_ofs = 0, read_buf_avail, comp_remaining, + out_buf_ofs = 0, cur_file_ofs; + mz_zip_archive_file_stat file_stat; + void *pRead_buf = NULL; + void *pWrite_buf = NULL; + mz_uint32 + local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *)local_header_u32; + + if ((!pZip) || (!pZip->m_pState) || (!pCallback) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + /* A directory or zero length file */ + if (file_stat.m_is_directory || (!file_stat.m_comp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + /* Read and do some minimal validation of the local directory entry (this + * doesn't crack the zip64 stuff, which we already have from the central dir) + */ + cur_file_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + /* Decompress the file either directly from memory or from a file input + * buffer. */ + if (pZip->m_pState->m_pMem) { + pRead_buf = (mz_uint8 *)pZip->m_pState->m_pMem + cur_file_ofs; + read_buf_size = read_buf_avail = file_stat.m_comp_size; + comp_remaining = 0; + } else { + read_buf_size = + MZ_MIN(file_stat.m_comp_size, (mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE); + if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t)read_buf_size))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } + + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || (!file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed data. */ + if (pZip->m_pState->m_pMem) { + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (file_stat.m_comp_size > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pCallback(pOpaque, out_buf_ofs, pRead_buf, + (size_t)file_stat.m_comp_size) != file_stat.m_comp_size) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + } else if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + file_crc32 = + (mz_uint32)mz_crc32(file_crc32, (const mz_uint8 *)pRead_buf, + (size_t)file_stat.m_comp_size); +#endif + } + + cur_file_ofs += file_stat.m_comp_size; + out_buf_ofs += file_stat.m_comp_size; + comp_remaining = 0; + } else { + while (comp_remaining) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t)read_buf_avail) != read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + file_crc32 = (mz_uint32)mz_crc32( + file_crc32, (const mz_uint8 *)pRead_buf, (size_t)read_buf_avail); + } +#endif + + if (pCallback(pOpaque, out_buf_ofs, pRead_buf, + (size_t)read_buf_avail) != read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + + cur_file_ofs += read_buf_avail; + out_buf_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + } + } + } else { + tinfl_decompressor inflator; + tinfl_init(&inflator); + + if (NULL == (pWrite_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + TINFL_LZ_DICT_SIZE))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + status = TINFL_STATUS_FAILED; + } else { + do { + mz_uint8 *pWrite_buf_cur = + (mz_uint8 *)pWrite_buf + (out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1)); + size_t in_buf_size, + out_buf_size = + TINFL_LZ_DICT_SIZE - (out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1)); + if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t)read_buf_avail) != read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + cur_file_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + read_buf_ofs = 0; + } + + in_buf_size = (size_t)read_buf_avail; + status = tinfl_decompress( + &inflator, (const mz_uint8 *)pRead_buf + read_buf_ofs, &in_buf_size, + (mz_uint8 *)pWrite_buf, pWrite_buf_cur, &out_buf_size, + comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0); + read_buf_avail -= in_buf_size; + read_buf_ofs += in_buf_size; + + if (out_buf_size) { + if (pCallback(pOpaque, out_buf_ofs, pWrite_buf_cur, out_buf_size) != + out_buf_size) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + file_crc32 = + (mz_uint32)mz_crc32(file_crc32, pWrite_buf_cur, out_buf_size); +#endif + if ((out_buf_ofs += out_buf_size) > file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + } + } while ((status == TINFL_STATUS_NEEDS_MORE_INPUT) || + (status == TINFL_STATUS_HAS_MORE_OUTPUT)); + } + } + + if ((status == TINFL_STATUS_DONE) && + (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) { + /* Make sure the entire file was decompressed, and check its CRC. */ + if (out_buf_ofs != file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + status = TINFL_STATUS_FAILED; + } +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (file_crc32 != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + status = TINFL_STATUS_FAILED; + } +#endif + } + + if (!pZip->m_pState->m_pMem) + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + + if (pWrite_buf) + pZip->m_pFree(pZip->m_pAlloc_opaque, pWrite_buf); + + return status == TINFL_STATUS_DONE; +} + +mz_bool mz_zip_reader_extract_file_to_callback(mz_zip_archive *pZip, + const char *pFilename, + mz_file_write_func pCallback, + void *pOpaque, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_callback(pZip, file_index, pCallback, pOpaque, + flags); +} + +mz_zip_reader_extract_iter_state * +mz_zip_reader_extract_iter_new(mz_zip_archive *pZip, mz_uint file_index, + mz_uint flags) { + mz_zip_reader_extract_iter_state *pState; + mz_uint32 + local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *)local_header_u32; + + /* Argument sanity check */ + if ((!pZip) || (!pZip->m_pState)) + return NULL; + + /* Allocate an iterator status structure */ + pState = (mz_zip_reader_extract_iter_state *)pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_reader_extract_iter_state)); + if (!pState) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return NULL; + } + + /* Fetch file details */ + if (!mz_zip_reader_file_stat(pZip, file_index, &pState->file_stat)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Encryption and patch files are not supported. */ + if (pState->file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (pState->file_stat.m_method != 0) && + (pState->file_stat.m_method != MZ_DEFLATED)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Init state - save args */ + pState->pZip = pZip; + pState->flags = flags; + + /* Init state - reset variables to defaults */ + pState->status = TINFL_STATUS_DONE; +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + pState->file_crc32 = MZ_CRC32_INIT; +#endif + pState->read_buf_ofs = 0; + pState->out_buf_ofs = 0; + pState->pRead_buf = NULL; + pState->pWrite_buf = NULL; + pState->out_blk_remain = 0; + + /* Read and parse the local directory entry. */ + pState->cur_file_ofs = pState->file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, pState->cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + pState->cur_file_ofs += + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((pState->cur_file_ofs + pState->file_stat.m_comp_size) > + pZip->m_archive_size) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Decompress the file either directly from memory or from a file input + * buffer. */ + if (pZip->m_pState->m_pMem) { + pState->pRead_buf = + (mz_uint8 *)pZip->m_pState->m_pMem + pState->cur_file_ofs; + pState->read_buf_size = pState->read_buf_avail = + pState->file_stat.m_comp_size; + pState->comp_remaining = pState->file_stat.m_comp_size; + } else { + if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method))) { + /* Decompression required, therefore intermediate read buffer required */ + pState->read_buf_size = MZ_MIN(pState->file_stat.m_comp_size, + (mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE); + if (NULL == + (pState->pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t)pState->read_buf_size))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + } else { + /* Decompression not required - we will be reading directly into user + * buffer, no temp buf required */ + pState->read_buf_size = 0; + } + pState->read_buf_avail = 0; + pState->comp_remaining = pState->file_stat.m_comp_size; + } + + if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method))) { + /* Decompression required, init decompressor */ + tinfl_init(&pState->inflator); + + /* Allocate write buffer */ + if (NULL == (pState->pWrite_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + TINFL_LZ_DICT_SIZE))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + if (pState->pRead_buf) + pZip->m_pFree(pZip->m_pAlloc_opaque, pState->pRead_buf); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + } + + return pState; +} + +mz_zip_reader_extract_iter_state * +mz_zip_reader_extract_file_iter_new(mz_zip_archive *pZip, const char *pFilename, + mz_uint flags) { + mz_uint32 file_index; + + /* Locate file index by name */ + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, &file_index)) + return NULL; + + /* Construct iterator */ + return mz_zip_reader_extract_iter_new(pZip, file_index, flags); +} + +size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state *pState, + void *pvBuf, size_t buf_size) { + size_t copied_to_caller = 0; + + /* Argument sanity check */ + if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState) || (!pvBuf)) + return 0; + + if ((pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed data, calc + * amount to return. */ + copied_to_caller = (size_t)MZ_MIN(buf_size, pState->comp_remaining); + + /* Zip is in memory....or requires reading from a file? */ + if (pState->pZip->m_pState->m_pMem) { + /* Copy data to caller's buffer */ + memcpy(pvBuf, pState->pRead_buf, copied_to_caller); + pState->pRead_buf = ((mz_uint8 *)pState->pRead_buf) + copied_to_caller; + } else { + /* Read directly into caller's buffer */ + if (pState->pZip->m_pRead(pState->pZip->m_pIO_opaque, + pState->cur_file_ofs, pvBuf, + copied_to_caller) != copied_to_caller) { + /* Failed to read all that was asked for, flag failure and alert user */ + mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED); + pState->status = TINFL_STATUS_FAILED; + copied_to_caller = 0; + } + } + +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + /* Compute CRC if not returning compressed data only */ + if (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) + pState->file_crc32 = (mz_uint32)mz_crc32( + pState->file_crc32, (const mz_uint8 *)pvBuf, copied_to_caller); +#endif + + /* Advance offsets, dec counters */ + pState->cur_file_ofs += copied_to_caller; + pState->out_buf_ofs += copied_to_caller; + pState->comp_remaining -= copied_to_caller; + } else { + do { + /* Calc ptr to write buffer - given current output pos and block size */ + mz_uint8 *pWrite_buf_cur = + (mz_uint8 *)pState->pWrite_buf + + (pState->out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1)); + + /* Calc max output size - given current output pos and block size */ + size_t in_buf_size, + out_buf_size = TINFL_LZ_DICT_SIZE - + (pState->out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1)); + + if (!pState->out_blk_remain) { + /* Read more data from file if none available (and reading from file) */ + if ((!pState->read_buf_avail) && (!pState->pZip->m_pState->m_pMem)) { + /* Calc read size */ + pState->read_buf_avail = + MZ_MIN(pState->read_buf_size, pState->comp_remaining); + if (pState->pZip->m_pRead(pState->pZip->m_pIO_opaque, + pState->cur_file_ofs, pState->pRead_buf, + (size_t)pState->read_buf_avail) != + pState->read_buf_avail) { + mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED); + pState->status = TINFL_STATUS_FAILED; + break; + } + + /* Advance offsets, dec counters */ + pState->cur_file_ofs += pState->read_buf_avail; + pState->comp_remaining -= pState->read_buf_avail; + pState->read_buf_ofs = 0; + } + + /* Perform decompression */ + in_buf_size = (size_t)pState->read_buf_avail; + pState->status = tinfl_decompress( + &pState->inflator, + (const mz_uint8 *)pState->pRead_buf + pState->read_buf_ofs, + &in_buf_size, (mz_uint8 *)pState->pWrite_buf, pWrite_buf_cur, + &out_buf_size, + pState->comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0); + pState->read_buf_avail -= in_buf_size; + pState->read_buf_ofs += in_buf_size; + + /* Update current output block size remaining */ + pState->out_blk_remain = out_buf_size; + } + + if (pState->out_blk_remain) { + /* Calc amount to return. */ + size_t to_copy = + MZ_MIN((buf_size - copied_to_caller), pState->out_blk_remain); + + /* Copy data to caller's buffer */ + memcpy((uint8_t *)pvBuf + copied_to_caller, pWrite_buf_cur, to_copy); + +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + /* Perform CRC */ + pState->file_crc32 = + (mz_uint32)mz_crc32(pState->file_crc32, pWrite_buf_cur, to_copy); +#endif + + /* Decrement data consumed from block */ + pState->out_blk_remain -= to_copy; + + /* Inc output offset, while performing sanity check */ + if ((pState->out_buf_ofs += to_copy) > + pState->file_stat.m_uncomp_size) { + mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED); + pState->status = TINFL_STATUS_FAILED; + break; + } + + /* Increment counter of data copied to caller */ + copied_to_caller += to_copy; + } + } while ((copied_to_caller < buf_size) && + ((pState->status == TINFL_STATUS_NEEDS_MORE_INPUT) || + (pState->status == TINFL_STATUS_HAS_MORE_OUTPUT))); + } + + /* Return how many bytes were copied into user buffer */ + return copied_to_caller; +} + +mz_bool +mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state *pState) { + int status; + + /* Argument sanity check */ + if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState)) + return MZ_FALSE; + + /* Was decompression completed and requested? */ + if ((pState->status == TINFL_STATUS_DONE) && + (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) { + /* Make sure the entire file was decompressed, and check its CRC. */ + if (pState->out_buf_ofs != pState->file_stat.m_uncomp_size) { + mz_zip_set_error(pState->pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + pState->status = TINFL_STATUS_FAILED; + } +#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (pState->file_crc32 != pState->file_stat.m_crc32) { + mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED); + pState->status = TINFL_STATUS_FAILED; + } +#endif + } + + /* Free buffers */ + if (!pState->pZip->m_pState->m_pMem) + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState->pRead_buf); + if (pState->pWrite_buf) + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState->pWrite_buf); + + /* Save status */ + status = pState->status; + + /* Free context */ + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState); + + return status == TINFL_STATUS_DONE; +} + +#ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_write_callback(void *pOpaque, mz_uint64 ofs, + const void *pBuf, size_t n) { + (void)ofs; + + return MZ_FWRITE(pBuf, 1, n, (MZ_FILE *)pOpaque); +} + +mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, mz_uint file_index, + const char *pDst_filename, + mz_uint flags) { + mz_bool status; + mz_zip_archive_file_stat file_stat; + MZ_FILE *pFile; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + if (file_stat.m_is_directory || (!file_stat.m_is_supported)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + pFile = MZ_FOPEN(pDst_filename, "wb"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + status = mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_file_write_callback, pFile, flags); + + if (MZ_FCLOSE(pFile) == EOF) { + if (status) + mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); + + status = MZ_FALSE; + } + +#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO) + if (status) + mz_zip_set_file_times(pDst_filename, file_stat.m_time, file_stat.m_time); +#endif + + return status; +} + +mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive *pZip, + const char *pArchive_filename, + const char *pDst_filename, + mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, flags, + &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_file(pZip, file_index, pDst_filename, flags); +} + +mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, mz_uint file_index, + MZ_FILE *pFile, mz_uint flags) { + mz_zip_archive_file_stat file_stat; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + if (file_stat.m_is_directory || (!file_stat.m_is_supported)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + return mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_file_write_callback, pFile, flags); +} + +mz_bool mz_zip_reader_extract_file_to_cfile(mz_zip_archive *pZip, + const char *pArchive_filename, + MZ_FILE *pFile, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, flags, + &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_cfile(pZip, file_index, pFile, flags); +} +#endif /* #ifndef MINIZ_NO_STDIO */ + +static size_t mz_zip_compute_crc32_callback(void *pOpaque, mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_uint32 *p = (mz_uint32 *)pOpaque; + (void)file_ofs; + *p = (mz_uint32)mz_crc32(*p, (const mz_uint8 *)pBuf, n); + return n; +} + +mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + mz_zip_internal_state *pState; + const mz_uint8 *pCentral_dir_header; + mz_bool found_zip64_ext_data_in_cdir = MZ_FALSE; + mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE; + mz_uint32 + local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *)local_header_u32; + mz_uint64 local_header_ofs = 0; + mz_uint32 local_header_filename_len, local_header_extra_len, + local_header_crc32; + mz_uint64 local_header_comp_size, local_header_uncomp_size; + mz_uint32 uncomp_crc32 = MZ_CRC32_INIT; + mz_bool has_data_descriptor; + mz_uint32 local_header_bit_flags; + + mz_zip_array file_data_array; + mz_zip_array_init(&file_data_array, 1); + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || + (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (file_index > pZip->m_total_files) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + pCentral_dir_header = mz_zip_get_cdh(pZip, file_index); + + if (!mz_zip_file_stat_internal(pZip, file_index, pCentral_dir_header, + &file_stat, &found_zip64_ext_data_in_cdir)) + return MZ_FALSE; + + /* A directory or zero length file */ + if (file_stat.m_is_directory || (!file_stat.m_uncomp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_is_encrypted) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports stored and deflate. */ + if ((file_stat.m_method != 0) && (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + if (!file_stat.m_is_supported) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + /* Read and parse the local directory entry. */ + local_header_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, local_header_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + local_header_filename_len = + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS); + local_header_extra_len = + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + local_header_comp_size = + MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS); + local_header_uncomp_size = + MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS); + local_header_crc32 = MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_CRC32_OFS); + local_header_bit_flags = + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_BIT_FLAG_OFS); + has_data_descriptor = (local_header_bit_flags & 8) != 0; + + if (local_header_filename_len != strlen(file_stat.m_filename)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len + local_header_extra_len + + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (!mz_zip_array_resize( + pZip, &file_data_array, + MZ_MAX(local_header_filename_len, local_header_extra_len), + MZ_FALSE)) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + goto handle_failure; + } + + if (local_header_filename_len) { + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE, + file_data_array.m_p, + local_header_filename_len) != local_header_filename_len) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + /* I've seen 1 archive that had the same pathname, but used backslashes in + * the local dir and forward slashes in the central dir. Do we care about + * this? For now, this case will fail validation. */ + if (memcmp(file_stat.m_filename, file_data_array.m_p, + local_header_filename_len) != 0) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } + + if ((local_header_extra_len) && + ((local_header_comp_size == MZ_UINT32_MAX) || + (local_header_uncomp_size == MZ_UINT32_MAX))) { + mz_uint32 extra_size_remaining = local_header_extra_len; + const mz_uint8 *pExtra_data = (const mz_uint8 *)file_data_array.m_p; + + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len, + file_data_array.m_p, + local_header_extra_len) != local_header_extra_len) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pSrc_field_data = pExtra_data + sizeof(mz_uint32); + + if (field_data_size < sizeof(mz_uint64) * 2) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data); + local_header_comp_size = + MZ_READ_LE64(pSrc_field_data + sizeof(mz_uint64)); + + found_zip64_ext_data_in_ldir = MZ_TRUE; + break; + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + } + + /* TODO: parse local header extra data when local_header_comp_size is + * 0xFFFFFFFF! (big_descriptor.zip) */ + /* I've seen zips in the wild with the data descriptor bit set, but proper + * local header values and bogus data descriptors */ + if ((has_data_descriptor) && (!local_header_comp_size) && + (!local_header_crc32)) { + mz_uint8 descriptor_buf[32]; + mz_bool has_id; + const mz_uint8 *pSrc; + mz_uint32 file_crc32; + mz_uint64 comp_size = 0, uncomp_size = 0; + + mz_uint32 num_descriptor_uint32s = + ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) ? 6 : 4; + + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len + local_header_extra_len + + file_stat.m_comp_size, + descriptor_buf, + sizeof(mz_uint32) * num_descriptor_uint32s) != + (sizeof(mz_uint32) * num_descriptor_uint32s)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + has_id = (MZ_READ_LE32(descriptor_buf) == MZ_ZIP_DATA_DESCRIPTOR_ID); + pSrc = has_id ? (descriptor_buf + sizeof(mz_uint32)) : descriptor_buf; + + file_crc32 = MZ_READ_LE32(pSrc); + + if ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) { + comp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32)); + uncomp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32) + sizeof(mz_uint64)); + } else { + comp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32)); + uncomp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32) + sizeof(mz_uint32)); + } + + if ((file_crc32 != file_stat.m_crc32) || + (comp_size != file_stat.m_comp_size) || + (uncomp_size != file_stat.m_uncomp_size)) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } else { + if ((local_header_crc32 != file_stat.m_crc32) || + (local_header_comp_size != file_stat.m_comp_size) || + (local_header_uncomp_size != file_stat.m_uncomp_size)) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } + + mz_zip_array_clear(pZip, &file_data_array); + + if ((flags & MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY) == 0) { + if (!mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_compute_crc32_callback, &uncomp_crc32, 0)) + return MZ_FALSE; + + /* 1 more check to be sure, although the extract checks too. */ + if (uncomp_crc32 != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + return MZ_FALSE; + } + } + + return MZ_TRUE; + +handle_failure: + mz_zip_array_clear(pZip, &file_data_array); + return MZ_FALSE; +} + +mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags) { + mz_zip_internal_state *pState; + uint32_t i; + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || + (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + /* Basic sanity checks */ + if (!pState->m_zip64) { + if (pZip->m_total_files > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (pZip->m_archive_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } else { + if (pZip->m_total_files >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } + + for (i = 0; i < pZip->m_total_files; i++) { + if (MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG & flags) { + mz_uint32 found_index; + mz_zip_archive_file_stat stat; + + if (!mz_zip_reader_file_stat(pZip, i, &stat)) + return MZ_FALSE; + + if (!mz_zip_reader_locate_file_v2(pZip, stat.m_filename, NULL, 0, + &found_index)) + return MZ_FALSE; + + /* This check can fail if there are duplicate filenames in the archive + * (which we don't check for when writing - that's up to the user) */ + if (found_index != i) + return mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + } + + if (!mz_zip_validate_file(pZip, i, flags)) + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, + mz_uint flags, mz_zip_error *pErr) { + mz_bool success = MZ_TRUE; + mz_zip_archive zip; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + if ((!pMem) || (!size)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + mz_zip_zero_struct(&zip); + + if (!mz_zip_reader_init_mem(&zip, pMem, size, flags)) { + if (pErr) + *pErr = zip.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_validate_archive(&zip, flags)) { + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (!mz_zip_reader_end_internal(&zip, success)) { + if (!actual_err) + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (pErr) + *pErr = actual_err; + + return success; +} + +#ifndef MINIZ_NO_STDIO +mz_bool mz_zip_validate_file_archive(const char *pFilename, mz_uint flags, + mz_zip_error *pErr) { + mz_bool success = MZ_TRUE; + mz_zip_archive zip; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + if (!pFilename) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + mz_zip_zero_struct(&zip); + + if (!mz_zip_reader_init_file_v2(&zip, pFilename, flags, 0, 0)) { + if (pErr) + *pErr = zip.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_validate_archive(&zip, flags)) { + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (!mz_zip_reader_end_internal(&zip, success)) { + if (!actual_err) + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (pErr) + *pErr = actual_err; + + return success; +} +#endif /* #ifndef MINIZ_NO_STDIO */ + +/* ------------------- .ZIP archive writing */ + +#ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + +static MZ_FORCEINLINE void mz_write_le16(mz_uint8 *p, mz_uint16 v) { + p[0] = (mz_uint8)v; + p[1] = (mz_uint8)(v >> 8); +} +static MZ_FORCEINLINE void mz_write_le32(mz_uint8 *p, mz_uint32 v) { + p[0] = (mz_uint8)v; + p[1] = (mz_uint8)(v >> 8); + p[2] = (mz_uint8)(v >> 16); + p[3] = (mz_uint8)(v >> 24); +} +static MZ_FORCEINLINE void mz_write_le64(mz_uint8 *p, mz_uint64 v) { + mz_write_le32(p, (mz_uint32)v); + mz_write_le32(p + sizeof(mz_uint32), (mz_uint32)(v >> 32)); +} + +#define MZ_WRITE_LE16(p, v) mz_write_le16((mz_uint8 *)(p), (mz_uint16)(v)) +#define MZ_WRITE_LE32(p, v) mz_write_le32((mz_uint8 *)(p), (mz_uint32)(v)) +#define MZ_WRITE_LE64(p, v) mz_write_le64((mz_uint8 *)(p), (mz_uint64)(v)) + +static size_t mz_zip_heap_write_func(void *pOpaque, mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *)pOpaque; + mz_zip_internal_state *pState = pZip->m_pState; + mz_uint64 new_size = MZ_MAX(file_ofs + n, pState->m_mem_size); + + if (!n) + return 0; + + /* An allocation this big is likely to just fail on 32-bit systems, so don't + * even go there. */ + if ((sizeof(size_t) == sizeof(mz_uint32)) && (new_size > 0x7FFFFFFF)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + return 0; + } + + if (new_size > pState->m_mem_capacity) { + void *pNew_block; + size_t new_capacity = MZ_MAX(64, pState->m_mem_capacity); + + while (new_capacity < new_size) + new_capacity *= 2; + + if (NULL == (pNew_block = pZip->m_pRealloc( + pZip->m_pAlloc_opaque, pState->m_pMem, 1, new_capacity))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return 0; + } + + pState->m_pMem = pNew_block; + pState->m_mem_capacity = new_capacity; + } + memcpy((mz_uint8 *)pState->m_pMem + file_ofs, pBuf, n); + pState->m_mem_size = (size_t)new_size; + return n; +} + +static mz_bool mz_zip_writer_end_internal(mz_zip_archive *pZip, + mz_bool set_last_error) { + mz_zip_internal_state *pState; + mz_bool status = MZ_TRUE; + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || + ((pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) && + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED))) { + if (set_last_error) + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + pState = pZip->m_pState; + pZip->m_pState = NULL; + mz_zip_array_clear(pZip, &pState->m_central_dir); + mz_zip_array_clear(pZip, &pState->m_central_dir_offsets); + mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets); + +#ifndef MINIZ_NO_STDIO + if (pState->m_pFile) { + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (MZ_FCLOSE(pState->m_pFile) == EOF) { + if (set_last_error) + mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); + status = MZ_FALSE; + } + } + + pState->m_pFile = NULL; + } +#endif /* #ifndef MINIZ_NO_STDIO */ + + if ((pZip->m_pWrite == mz_zip_heap_write_func) && (pState->m_pMem)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pState->m_pMem); + pState->m_pMem = NULL; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + pZip->m_zip_mode = MZ_ZIP_MODE_INVALID; + return status; +} + +mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, mz_uint64 existing_size, + mz_uint flags) { + mz_bool zip64 = (flags & MZ_ZIP_FLAG_WRITE_ZIP64) != 0; + + if ((!pZip) || (pZip->m_pState) || (!pZip->m_pWrite) || + (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) { + if (!pZip->m_pRead) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + if (pZip->m_file_offset_alignment) { + /* Ensure user specified file offset alignment is a power of 2. */ + if (pZip->m_file_offset_alignment & (pZip->m_file_offset_alignment - 1)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + if (!pZip->m_pAlloc) + pZip->m_pAlloc = miniz_def_alloc_func; + if (!pZip->m_pFree) + pZip->m_pFree = miniz_def_free_func; + if (!pZip->m_pRealloc) + pZip->m_pRealloc = miniz_def_realloc_func; + + pZip->m_archive_size = existing_size; + pZip->m_central_directory_file_ofs = 0; + pZip->m_total_files = 0; + + if (NULL == (pZip->m_pState = (mz_zip_internal_state *)pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state)); + + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, + sizeof(mz_uint8)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir_offsets, + sizeof(mz_uint32)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_sorted_central_dir_offsets, + sizeof(mz_uint32)); + + pZip->m_pState->m_zip64 = zip64; + pZip->m_pState->m_zip64_has_extended_info_fields = zip64; + + pZip->m_zip_type = MZ_ZIP_TYPE_USER; + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init(mz_zip_archive *pZip, mz_uint64 existing_size) { + return mz_zip_writer_init_v2(pZip, existing_size, 0); +} + +mz_bool mz_zip_writer_init_heap_v2(mz_zip_archive *pZip, + size_t size_to_reserve_at_beginning, + size_t initial_allocation_size, + mz_uint flags) { + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_mem_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_HEAP; + + if (0 != (initial_allocation_size = MZ_MAX(initial_allocation_size, + size_to_reserve_at_beginning))) { + if (NULL == (pZip->m_pState->m_pMem = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, initial_allocation_size))) { + mz_zip_writer_end_internal(pZip, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + pZip->m_pState->m_mem_capacity = initial_allocation_size; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, + size_t size_to_reserve_at_beginning, + size_t initial_allocation_size) { + return mz_zip_writer_init_heap_v2(pZip, size_to_reserve_at_beginning, + initial_allocation_size, 0); +} + +#ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_write_func(void *pOpaque, mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *)pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile); + + file_ofs += pZip->m_pState->m_file_archive_start_ofs; + + if (((mz_int64)file_ofs < 0) || + (((cur_ofs != (mz_int64)file_ofs)) && + (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64)file_ofs, SEEK_SET)))) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + return 0; + } + + return MZ_FWRITE(pBuf, 1, n, pZip->m_pState->m_pFile); +} + +mz_bool mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning) { + return mz_zip_writer_init_file_v2(pZip, pFilename, + size_to_reserve_at_beginning, 0); +} + +mz_bool mz_zip_writer_init_file_v2(mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning, + mz_uint flags) { + MZ_FILE *pFile; + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, flags)) + return MZ_FALSE; + + if (NULL == (pFile = MZ_FOPEN( + pFilename, + (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) ? "w+b" : "wb"))) { + mz_zip_writer_end(pZip); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + } + + pZip->m_pState->m_pFile = pFile; + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + + if (size_to_reserve_at_beginning) { + mz_uint64 cur_ofs = 0; + char buf[4096]; + + MZ_CLEAR_OBJ(buf); + + do { + size_t n = (size_t)MZ_MIN(sizeof(buf), size_to_reserve_at_beginning); + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_ofs, buf, n) != n) { + mz_zip_writer_end(pZip); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_ofs += n; + size_to_reserve_at_beginning -= n; + } while (size_to_reserve_at_beginning); + } + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint flags) { + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, 0, flags)) + return MZ_FALSE; + + pZip->m_pState->m_pFile = pFile; + pZip->m_pState->m_file_archive_start_ofs = + MZ_FTELL64(pZip->m_pState->m_pFile); + pZip->m_zip_type = MZ_ZIP_TYPE_CFILE; + + return MZ_TRUE; +} +#endif /* #ifndef MINIZ_NO_STDIO */ + +mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags) { + mz_zip_internal_state *pState; + + if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ZIP64) { + /* We don't support converting a non-zip64 file to zip64 - this seems like + * more trouble than it's worth. (What about the existing 32-bit data + * descriptors that could follow the compressed data?) */ + if (!pZip->m_pState->m_zip64) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* No sense in trying to write to an archive that's already at the support max + * size */ + if (pZip->m_pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + if ((pZip->m_archive_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + pState = pZip->m_pState; + + if (pState->m_pFile) { +#ifdef MINIZ_NO_STDIO + (void)pFilename; + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); +#else + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (!pFilename) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Archive is being read from stdio and was originally opened only for + * reading. Try to reopen as writable. */ + if (NULL == + (pState->m_pFile = MZ_FREOPEN(pFilename, "r+b", pState->m_pFile))) { + /* The mz_zip_archive is now in a bogus state because pState->m_pFile is + * NULL, so just close it. */ + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + } + } + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; +#endif /* #ifdef MINIZ_NO_STDIO */ + } else if (pState->m_pMem) { + /* Archive lives in a memory block. Assume it's from the heap that we can + * resize using the realloc callback. */ + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState->m_mem_capacity = pState->m_mem_size; + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + } + /* Archive is being read via a user provided read function - make sure the + user has specified a write function too. */ + else if (!pZip->m_pWrite) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Start writing new files at the archive's current central directory + * location. */ + /* TODO: We could add a flag that lets the user start writing immediately + * AFTER the existing central dir - this would be safer. */ + pZip->m_archive_size = pZip->m_central_directory_file_ofs; + pZip->m_central_directory_file_ofs = 0; + + /* Clear the sorted central dir offsets, they aren't useful or maintained now. + */ + /* Even though we're now in write mode, files can still be extracted and + * verified, but file locates will be slow. */ + /* TODO: We could easily maintain the sorted central directory offsets. */ + mz_zip_array_clear(pZip, &pZip->m_pState->m_sorted_central_dir_offsets); + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_from_reader_v2_noreopen(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags) { + mz_zip_internal_state *pState; + + if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ZIP64) { + /* We don't support converting a non-zip64 file to zip64 - this seems like + * more trouble than it's worth. (What about the existing 32-bit data + * descriptors that could follow the compressed data?) */ + if (!pZip->m_pState->m_zip64) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* No sense in trying to write to an archive that's already at the support max + * size */ + if (pZip->m_pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + if ((pZip->m_archive_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + pState = pZip->m_pState; + + if (pState->m_pFile) { +#ifdef MINIZ_NO_STDIO + (void)pFilename; + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); +#else + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (!pFilename) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; +#endif /* #ifdef MINIZ_NO_STDIO */ + } else if (pState->m_pMem) { + /* Archive lives in a memory block. Assume it's from the heap that we can + * resize using the realloc callback. */ + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState->m_mem_capacity = pState->m_mem_size; + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + } + /* Archive is being read via a user provided read function - make sure the + user has specified a write function too. */ + else if (!pZip->m_pWrite) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Start writing new files at the archive's current central directory + * location. */ + /* TODO: We could add a flag that lets the user start writing immediately + * AFTER the existing central dir - this would be safer. */ + pZip->m_archive_size = pZip->m_central_directory_file_ofs; + pZip->m_central_directory_file_ofs = 0; + + /* Clear the sorted central dir offsets, they aren't useful or maintained now. + */ + /* Even though we're now in write mode, files can still be extracted and + * verified, but file locates will be slow. */ + /* TODO: We could easily maintain the sorted central directory offsets. */ + mz_zip_array_clear(pZip, &pZip->m_pState->m_sorted_central_dir_offsets); + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, + const char *pFilename) { + return mz_zip_writer_init_from_reader_v2(pZip, pFilename, 0); +} + +/* TODO: pArchive_name is a terrible name here! */ +mz_bool mz_zip_writer_add_mem(mz_zip_archive *pZip, const char *pArchive_name, + const void *pBuf, size_t buf_size, + mz_uint level_and_flags) { + return mz_zip_writer_add_mem_ex(pZip, pArchive_name, pBuf, buf_size, NULL, 0, + level_and_flags, 0, 0); +} + +typedef struct { + mz_zip_archive *m_pZip; + mz_uint64 m_cur_archive_file_ofs; + mz_uint64 m_comp_size; +} mz_zip_writer_add_state; + +static mz_bool mz_zip_writer_add_put_buf_callback(const void *pBuf, int len, + void *pUser) { + mz_zip_writer_add_state *pState = (mz_zip_writer_add_state *)pUser; + if ((int)pState->m_pZip->m_pWrite(pState->m_pZip->m_pIO_opaque, + pState->m_cur_archive_file_ofs, pBuf, + len) != len) + return MZ_FALSE; + + pState->m_cur_archive_file_ofs += len; + pState->m_comp_size += len; + return MZ_TRUE; +} + +#define MZ_ZIP64_MAX_LOCAL_EXTRA_FIELD_SIZE \ + (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 2) +#define MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE \ + (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 3) +static mz_uint32 +mz_zip_writer_create_zip64_extra_data(mz_uint8 *pBuf, mz_uint64 *pUncomp_size, + mz_uint64 *pComp_size, + mz_uint64 *pLocal_header_ofs) { + mz_uint8 *pDst = pBuf; + mz_uint32 field_size = 0; + + MZ_WRITE_LE16(pDst + 0, MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID); + MZ_WRITE_LE16(pDst + 2, 0); + pDst += sizeof(mz_uint16) * 2; + + if (pUncomp_size) { + MZ_WRITE_LE64(pDst, *pUncomp_size); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + if (pComp_size) { + MZ_WRITE_LE64(pDst, *pComp_size); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + if (pLocal_header_ofs) { + MZ_WRITE_LE64(pDst, *pLocal_header_ofs); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + MZ_WRITE_LE16(pBuf + 2, field_size); + + return (mz_uint32)(pDst - pBuf); +} + +static mz_bool mz_zip_writer_create_local_dir_header( + mz_zip_archive *pZip, mz_uint8 *pDst, mz_uint16 filename_size, + mz_uint16 extra_size, mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date) { + (void)pZip; + memset(pDst, 0, MZ_ZIP_LOCAL_DIR_HEADER_SIZE); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_SIG_OFS, MZ_ZIP_LOCAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_VERSION_NEEDED_OFS, method ? 20 : 0); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_BIT_FLAG_OFS, bit_flags); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_METHOD_OFS, method); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_TIME_OFS, dos_time); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_DATE_OFS, dos_date); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_CRC32_OFS, uncomp_crc32); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS, + MZ_MIN(comp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS, + MZ_MIN(uncomp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILENAME_LEN_OFS, filename_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_EXTRA_LEN_OFS, extra_size); + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_create_central_dir_header( + mz_zip_archive *pZip, mz_uint8 *pDst, mz_uint16 filename_size, + mz_uint16 extra_size, mz_uint16 comment_size, mz_uint64 uncomp_size, + mz_uint64 comp_size, mz_uint32 uncomp_crc32, mz_uint16 method, + mz_uint16 bit_flags, mz_uint16 dos_time, mz_uint16 dos_date, + mz_uint64 local_header_ofs, mz_uint32 ext_attributes) { + (void)pZip; + memset(pDst, 0, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_SIG_OFS, MZ_ZIP_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_VERSION_NEEDED_OFS, method ? 20 : 0); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_BIT_FLAG_OFS, bit_flags); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_METHOD_OFS, method); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_TIME_OFS, dos_time); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_DATE_OFS, dos_date); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_CRC32_OFS, uncomp_crc32); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, + MZ_MIN(comp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, + MZ_MIN(uncomp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILENAME_LEN_OFS, filename_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_EXTRA_LEN_OFS, extra_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_COMMENT_LEN_OFS, comment_size); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS, ext_attributes); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + MZ_MIN(local_header_ofs, MZ_UINT32_MAX)); + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_add_to_central_dir( + mz_zip_archive *pZip, const char *pFilename, mz_uint16 filename_size, + const void *pExtra, mz_uint16 extra_size, const void *pComment, + mz_uint16 comment_size, mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date, mz_uint64 local_header_ofs, + mz_uint32 ext_attributes, const char *user_extra_data, + mz_uint user_extra_data_len) { + mz_zip_internal_state *pState = pZip->m_pState; + mz_uint32 central_dir_ofs = (mz_uint32)pState->m_central_dir.m_size; + size_t orig_central_dir_size = pState->m_central_dir.m_size; + mz_uint8 central_dir_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE]; + + if (!pZip->m_pState->m_zip64) { + if (local_header_ofs > 0xFFFFFFFF) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64)pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + extra_size + + user_extra_data_len + comment_size) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!mz_zip_writer_create_central_dir_header( + pZip, central_dir_header, filename_size, + (mz_uint16)(extra_size + user_extra_data_len), comment_size, + uncomp_size, comp_size, uncomp_crc32, method, bit_flags, dos_time, + dos_date, local_header_ofs, ext_attributes)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if ((!mz_zip_array_push_back(pZip, &pState->m_central_dir, central_dir_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pFilename, + filename_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pExtra, + extra_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, user_extra_data, + user_extra_data_len)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pComment, + comment_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, + ¢ral_dir_ofs, 1))) { + /* Try to resize the central directory array back into its original state. + */ + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_validate_archive_name(const char *pArchive_name) { + /* Basic ZIP archive filename validity checks: Valid filenames cannot start + * with a forward slash, cannot contain a drive letter, and cannot use + * DOS-style backward slashes. */ + if (*pArchive_name == '/') + return MZ_FALSE; + + /* Making sure the name does not contain drive letters or DOS style backward + * slashes is the responsibility of the program using miniz*/ + + return MZ_TRUE; +} + +static mz_uint +mz_zip_writer_compute_padding_needed_for_file_alignment(mz_zip_archive *pZip) { + mz_uint32 n; + if (!pZip->m_file_offset_alignment) + return 0; + n = (mz_uint32)(pZip->m_archive_size & (pZip->m_file_offset_alignment - 1)); + return (mz_uint)((pZip->m_file_offset_alignment - n) & + (pZip->m_file_offset_alignment - 1)); +} + +static mz_bool mz_zip_writer_write_zeros(mz_zip_archive *pZip, + mz_uint64 cur_file_ofs, mz_uint32 n) { + char buf[4096]; + memset(buf, 0, MZ_MIN(sizeof(buf), n)); + while (n) { + mz_uint32 s = MZ_MIN(sizeof(buf), n); + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_file_ofs, buf, s) != s) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_file_ofs += s; + n -= s; + } + return MZ_TRUE; +} + +mz_bool mz_zip_writer_add_mem_ex(mz_zip_archive *pZip, + const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, + mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32) { + return mz_zip_writer_add_mem_ex_v2( + pZip, pArchive_name, pBuf, buf_size, pComment, comment_size, + level_and_flags, uncomp_size, uncomp_crc32, NULL, NULL, 0, NULL, 0); +} + +mz_bool mz_zip_writer_add_mem_ex_v2( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, mz_uint32 uncomp_crc32, + MZ_TIME_T *last_modified, const char *user_extra_data, + mz_uint user_extra_data_len, const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + mz_uint16 method = 0, dos_time = 0, dos_date = 0; + mz_uint level, ext_attributes = 0, num_alignment_padding_bytes; + mz_uint64 local_dir_header_ofs = 0, cur_archive_file_ofs = 0, comp_size = 0; + size_t archive_name_size; + mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + tdefl_compressor *pComp = NULL; + mz_bool store_data_uncompressed; + mz_zip_internal_state *pState; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_uint16 bit_flags = 0; + + if ((int)level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + + if (uncomp_size || + (buf_size && !(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) + bit_flags |= MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR; + + if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) + bit_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8; + + level = level_and_flags & 0xF; + store_data_uncompressed = + ((!level) || (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)); + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || ((buf_size) && (!pBuf)) || + (!pArchive_name) || ((comment_size) && (!pComment)) || + (level > MZ_UBER_COMPRESSION)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + local_dir_header_ofs = pZip->m_archive_size; + cur_archive_file_ofs = pZip->m_archive_size; + + if (pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */ + } + if ((buf_size > 0xFFFFFFFF) || (uncomp_size > 0xFFFFFFFF)) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + + if ((!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && (uncomp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + +#ifndef MINIZ_NO_TIME + if (last_modified != NULL) { + mz_zip_time_t_to_dos_time(*last_modified, &dos_time, &dos_date); + } else { + MZ_TIME_T cur_time; + time(&cur_time); + mz_zip_time_t_to_dos_time(cur_time, &dos_time, &dos_date); + } +#endif /* #ifndef MINIZ_NO_TIME */ + + if (!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + uncomp_crc32 = + (mz_uint32)mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *)pBuf, buf_size); + uncomp_size = buf_size; + if (uncomp_size <= 3) { + level = 0; + store_data_uncompressed = MZ_TRUE; + } + } + + archive_name_size = strlen(pArchive_name); + if (archive_name_size > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64)pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!pState->m_zip64) { + /* Bail early if the archive would obviously become too large */ + if ((pZip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + comment_size + + user_extra_data_len + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + user_extra_data_central_len + + MZ_ZIP_DATA_DESCRIPTER_SIZE32) > 0xFFFFFFFF) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + + if ((archive_name_size) && (pArchive_name[archive_name_size - 1] == '/')) { + /* Set DOS Subdirectory attribute bit. */ + ext_attributes |= MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG; + + /* Subdirectories cannot contain data. */ + if ((buf_size) || (uncomp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* Try to do any allocations before writing to the archive, so if an + * allocation fails the file remains unmodified. (A good idea if we're doing + * an in-place modification.) */ + if ((!mz_zip_array_ensure_room( + pZip, &pState->m_central_dir, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + comment_size + + (pState->m_zip64 ? MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE : 0))) || + (!mz_zip_array_ensure_room(pZip, &pState->m_central_dir_offsets, 1))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if ((!store_data_uncompressed) && (buf_size)) { + if (NULL == (pComp = (tdefl_compressor *)pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, + num_alignment_padding_bytes)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return MZ_FALSE; + } + + local_dir_header_ofs += num_alignment_padding_bytes; + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((local_dir_header_ofs & (pZip->m_file_offset_alignment - 1)) == + 0); + } + cur_archive_file_ofs += num_alignment_padding_bytes; + + MZ_CLEAR_OBJ(local_dir_header); + + if (!store_data_uncompressed || + (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + method = MZ_DEFLATED; + } + + if (pState->m_zip64) { + if (uncomp_size >= MZ_UINT32_MAX || local_dir_header_ofs >= MZ_UINT32_MAX) { + pExtra_data = extra_data; + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16)archive_name_size, + (mz_uint16)(extra_size + user_extra_data_len), 0, 0, 0, method, + bit_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, + local_dir_header, + sizeof(local_dir_header)) != sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, + archive_name_size) != archive_name_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_archive_file_ofs += archive_name_size; + + if (pExtra_data != NULL) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, extra_data, + extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += extra_size; + } + } else { + if ((comp_size > MZ_UINT32_MAX) || (cur_archive_file_ofs > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16)archive_name_size, + (mz_uint16)user_extra_data_len, 0, 0, 0, method, bit_flags, + dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, + local_dir_header, + sizeof(local_dir_header)) != sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, + archive_name_size) != archive_name_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_archive_file_ofs += archive_name_size; + } + + if (user_extra_data_len > 0) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + user_extra_data, + user_extra_data_len) != user_extra_data_len) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += user_extra_data_len; + } + + if (store_data_uncompressed) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pBuf, + buf_size) != buf_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += buf_size; + comp_size = buf_size; + } else if (buf_size) { + mz_zip_writer_add_state state; + + state.m_pZip = pZip; + state.m_cur_archive_file_ofs = cur_archive_file_ofs; + state.m_comp_size = 0; + + if ((tdefl_init(pComp, mz_zip_writer_add_put_buf_callback, &state, + tdefl_create_comp_flags_from_zip_params( + level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) || + (tdefl_compress_buffer(pComp, pBuf, buf_size, TDEFL_FINISH) != + TDEFL_STATUS_DONE)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED); + } + + comp_size = state.m_comp_size; + cur_archive_file_ofs = state.m_cur_archive_file_ofs; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + pComp = NULL; + + if (uncomp_size) { + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32; + + MZ_ASSERT(bit_flags & MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR); + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32); + if (pExtra_data == NULL) { + if (comp_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(local_dir_footer + 8, comp_size); + MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size); + } else { + MZ_WRITE_LE64(local_dir_footer + 8, comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size); + local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_footer, + local_dir_footer_size) != local_dir_footer_size) + return MZ_FALSE; + + cur_archive_file_ofs += local_dir_footer_size; + } + + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs : NULL); + } + + if (!mz_zip_writer_add_to_central_dir( + pZip, pArchive_name, (mz_uint16)archive_name_size, pExtra_data, + (mz_uint16)extra_size, pComment, comment_size, uncomp_size, comp_size, + uncomp_crc32, method, bit_flags, dos_time, dos_date, + local_dir_header_ofs, ext_attributes, user_extra_data_central, + user_extra_data_central_len)) + return MZ_FALSE; + + pZip->m_total_files++; + pZip->m_archive_size = cur_archive_file_ofs; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_add_read_buf_callback( + mz_zip_archive *pZip, const char *pArchive_name, + mz_file_read_func read_callback, void *callback_opaque, mz_uint64 max_size, + const MZ_TIME_T *pFile_time, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint32 ext_attributes, + const char *user_extra_data, mz_uint user_extra_data_len, + const char *user_extra_data_central, mz_uint user_extra_data_central_len) { + mz_uint16 gen_flags = (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) + ? 0 + : MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR; + mz_uint uncomp_crc32 = MZ_CRC32_INIT, level, num_alignment_padding_bytes; + mz_uint16 method = 0, dos_time = 0, dos_date = 0; + mz_uint64 local_dir_header_ofs, cur_archive_file_ofs = 0, uncomp_size = 0, + comp_size = 0; + size_t archive_name_size; + mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_zip_internal_state *pState; + mz_uint64 file_ofs = 0, cur_archive_header_file_ofs; + + if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) + gen_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8; + + if ((int)level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + level = level_and_flags & 0xF; + + /* Sanity checks */ + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || (!pArchive_name) || + ((comment_size) && (!pComment)) || (level > MZ_UBER_COMPRESSION)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + cur_archive_file_ofs = pZip->m_archive_size; + + if ((!pState->m_zip64) && (max_size > MZ_UINT32_MAX)) { + /* Source file is too large for non-zip64 */ + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + pState->m_zip64 = MZ_TRUE; + } + + /* We could support this, but why? */ + if (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + if (pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */ + } + } + + archive_name_size = strlen(pArchive_name); + if (archive_name_size > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64)pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!pState->m_zip64) { + /* Bail early if the archive would obviously become too large */ + if ((pZip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + comment_size + + user_extra_data_len + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 1024 + + MZ_ZIP_DATA_DESCRIPTER_SIZE32 + user_extra_data_central_len) > + 0xFFFFFFFF) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + +#ifndef MINIZ_NO_TIME + if (pFile_time) { + mz_zip_time_t_to_dos_time(*pFile_time, &dos_time, &dos_date); + } +#endif + + if (max_size <= 3) + level = 0; + + if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, + num_alignment_padding_bytes)) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += num_alignment_padding_bytes; + local_dir_header_ofs = cur_archive_file_ofs; + + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((cur_archive_file_ofs & (pZip->m_file_offset_alignment - 1)) == + 0); + } + + if (max_size && level) { + method = MZ_DEFLATED; + } + + MZ_CLEAR_OBJ(local_dir_header); + if (pState->m_zip64) { + if (max_size >= MZ_UINT32_MAX || local_dir_header_ofs >= MZ_UINT32_MAX) { + pExtra_data = extra_data; + if (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, (max_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (max_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs + : NULL); + else + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, NULL, NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16)archive_name_size, + (mz_uint16)(extra_size + user_extra_data_len), 0, 0, 0, method, + gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_header, + sizeof(local_dir_header)) != sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += archive_name_size; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, extra_data, + extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += extra_size; + } else { + if ((comp_size > MZ_UINT32_MAX) || (cur_archive_file_ofs > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16)archive_name_size, + (mz_uint16)user_extra_data_len, 0, 0, 0, method, gen_flags, + dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_header, + sizeof(local_dir_header)) != sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += archive_name_size; + } + + if (user_extra_data_len > 0) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + user_extra_data, + user_extra_data_len) != user_extra_data_len) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += user_extra_data_len; + } + + if (max_size) { + void *pRead_buf = + pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, MZ_ZIP_MAX_IO_BUF_SIZE); + if (!pRead_buf) { + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!level) { + while (1) { + size_t n = read_callback(callback_opaque, file_ofs, pRead_buf, + MZ_ZIP_MAX_IO_BUF_SIZE); + if (n == 0) + break; + + if ((n > MZ_ZIP_MAX_IO_BUF_SIZE) || (file_ofs + n > max_size)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pRead_buf, + n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + file_ofs += n; + uncomp_crc32 = + (mz_uint32)mz_crc32(uncomp_crc32, (const mz_uint8 *)pRead_buf, n); + cur_archive_file_ofs += n; + } + uncomp_size = file_ofs; + comp_size = uncomp_size; + } else { + mz_bool result = MZ_FALSE; + mz_zip_writer_add_state state; + tdefl_compressor *pComp = (tdefl_compressor *)pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)); + if (!pComp) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + state.m_pZip = pZip; + state.m_cur_archive_file_ofs = cur_archive_file_ofs; + state.m_comp_size = 0; + + if (tdefl_init(pComp, mz_zip_writer_add_put_buf_callback, &state, + tdefl_create_comp_flags_from_zip_params( + level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + } + + for (;;) { + tdefl_status status; + tdefl_flush flush = TDEFL_NO_FLUSH; + + size_t n = read_callback(callback_opaque, file_ofs, pRead_buf, + MZ_ZIP_MAX_IO_BUF_SIZE); + if ((n > MZ_ZIP_MAX_IO_BUF_SIZE) || (file_ofs + n > max_size)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + break; + } + + file_ofs += n; + uncomp_crc32 = + (mz_uint32)mz_crc32(uncomp_crc32, (const mz_uint8 *)pRead_buf, n); + + if (pZip->m_pNeeds_keepalive != NULL && + pZip->m_pNeeds_keepalive(pZip->m_pIO_opaque)) + flush = TDEFL_FULL_FLUSH; + + if (n == 0) + flush = TDEFL_FINISH; + + status = tdefl_compress_buffer(pComp, pRead_buf, n, flush); + if (status == TDEFL_STATUS_DONE) { + result = MZ_TRUE; + break; + } else if (status != TDEFL_STATUS_OKAY) { + mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED); + break; + } + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + + if (!result) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return MZ_FALSE; + } + + uncomp_size = file_ofs; + comp_size = state.m_comp_size; + cur_archive_file_ofs = state.m_cur_archive_file_ofs; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + } + + if (!(level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE)) { + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32; + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32); + if (pExtra_data == NULL) { + if (comp_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(local_dir_footer + 8, comp_size); + MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size); + } else { + MZ_WRITE_LE64(local_dir_footer + 8, comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size); + local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_footer, + local_dir_footer_size) != local_dir_footer_size) + return MZ_FALSE; + + cur_archive_file_ofs += local_dir_footer_size; + } + + if (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) { + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, (max_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (max_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16)archive_name_size, + (mz_uint16)(extra_size + user_extra_data_len), + (max_size >= MZ_UINT32_MAX) ? MZ_UINT32_MAX : uncomp_size, + (max_size >= MZ_UINT32_MAX) ? MZ_UINT32_MAX : comp_size, + uncomp_crc32, method, gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + cur_archive_header_file_ofs = local_dir_header_ofs; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_header_file_ofs, + local_dir_header, + sizeof(local_dir_header)) != sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + if (pExtra_data != NULL) { + cur_archive_header_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_header_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_header_file_ofs += archive_name_size; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_header_file_ofs, + extra_data, extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_header_file_ofs += extra_size; + } + } + + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) ? &local_dir_header_ofs : NULL); + } + + if (!mz_zip_writer_add_to_central_dir( + pZip, pArchive_name, (mz_uint16)archive_name_size, pExtra_data, + (mz_uint16)extra_size, pComment, comment_size, uncomp_size, comp_size, + uncomp_crc32, method, gen_flags, dos_time, dos_date, + local_dir_header_ofs, ext_attributes, user_extra_data_central, + user_extra_data_central_len)) + return MZ_FALSE; + + pZip->m_total_files++; + pZip->m_archive_size = cur_archive_file_ofs; + + return MZ_TRUE; +} + +#ifndef MINIZ_NO_STDIO + +static size_t mz_file_read_func_stdio(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + MZ_FILE *pSrc_file = (MZ_FILE *)pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pSrc_file); + + if (((mz_int64)file_ofs < 0) || + (((cur_ofs != (mz_int64)file_ofs)) && + (MZ_FSEEK64(pSrc_file, (mz_int64)file_ofs, SEEK_SET)))) + return 0; + + return MZ_FREAD(pBuf, 1, n, pSrc_file); +} + +mz_bool mz_zip_writer_add_cfile( + mz_zip_archive *pZip, const char *pArchive_name, MZ_FILE *pSrc_file, + mz_uint64 max_size, const MZ_TIME_T *pFile_time, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, mz_uint32 ext_attributes, + const char *user_extra_data, mz_uint user_extra_data_len, + const char *user_extra_data_central, mz_uint user_extra_data_central_len) { + return mz_zip_writer_add_read_buf_callback( + pZip, pArchive_name, mz_file_read_func_stdio, pSrc_file, max_size, + pFile_time, pComment, comment_size, level_and_flags, ext_attributes, + user_extra_data, user_extra_data_len, user_extra_data_central, + user_extra_data_central_len); +} + +mz_bool mz_zip_writer_add_file(mz_zip_archive *pZip, const char *pArchive_name, + const char *pSrc_filename, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, + mz_uint32 ext_attributes) { + MZ_FILE *pSrc_file = NULL; + mz_uint64 uncomp_size = 0; + MZ_TIME_T file_modified_time; + MZ_TIME_T *pFile_time = NULL; + mz_bool status; + + memset(&file_modified_time, 0, sizeof(file_modified_time)); + +#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO) + pFile_time = &file_modified_time; + if (!mz_zip_get_file_modified_time(pSrc_filename, &file_modified_time)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_STAT_FAILED); +#endif + + pSrc_file = MZ_FOPEN(pSrc_filename, "rb"); + if (!pSrc_file) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + MZ_FSEEK64(pSrc_file, 0, SEEK_END); + uncomp_size = MZ_FTELL64(pSrc_file); + MZ_FSEEK64(pSrc_file, 0, SEEK_SET); + + status = mz_zip_writer_add_cfile( + pZip, pArchive_name, pSrc_file, uncomp_size, pFile_time, pComment, + comment_size, level_and_flags, ext_attributes, NULL, 0, NULL, 0); + + MZ_FCLOSE(pSrc_file); + + return status; +} +#endif /* #ifndef MINIZ_NO_STDIO */ + +static mz_bool mz_zip_writer_update_zip64_extension_block( + mz_zip_array *pNew_ext, mz_zip_archive *pZip, const mz_uint8 *pExt, + uint32_t ext_len, mz_uint64 *pComp_size, mz_uint64 *pUncomp_size, + mz_uint64 *pLocal_header_ofs, mz_uint32 *pDisk_start) { + /* + 64 should be enough for any new zip64 data */ + if (!mz_zip_array_reserve(pZip, pNew_ext, ext_len + 64, MZ_FALSE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + mz_zip_array_resize(pZip, pNew_ext, 0, MZ_FALSE); + + if ((pUncomp_size) || (pComp_size) || (pLocal_header_ofs) || (pDisk_start)) { + mz_uint8 new_ext_block[64]; + mz_uint8 *pDst = new_ext_block; + mz_write_le16(pDst, MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID); + mz_write_le16(pDst + sizeof(mz_uint16), 0); + pDst += sizeof(mz_uint16) * 2; + + if (pUncomp_size) { + mz_write_le64(pDst, *pUncomp_size); + pDst += sizeof(mz_uint64); + } + + if (pComp_size) { + mz_write_le64(pDst, *pComp_size); + pDst += sizeof(mz_uint64); + } + + if (pLocal_header_ofs) { + mz_write_le64(pDst, *pLocal_header_ofs); + pDst += sizeof(mz_uint64); + } + + if (pDisk_start) { + mz_write_le32(pDst, *pDisk_start); + pDst += sizeof(mz_uint32); + } + + mz_write_le16(new_ext_block + sizeof(mz_uint16), + (mz_uint16)((pDst - new_ext_block) - sizeof(mz_uint16) * 2)); + + if (!mz_zip_array_push_back(pZip, pNew_ext, new_ext_block, + pDst - new_ext_block)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if ((pExt) && (ext_len)) { + mz_uint32 extra_size_remaining = ext_len; + const mz_uint8 *pExtra_data = pExt; + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (field_id != MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + if (!mz_zip_array_push_back(pZip, pNew_ext, pExtra_data, + field_total_size)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + } + + return MZ_TRUE; +} + +/* TODO: This func is now pretty freakin complex due to zip64, split it up? */ +mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, + mz_zip_archive *pSource_zip, + mz_uint src_file_index) { + mz_uint n, bit_flags, num_alignment_padding_bytes, + src_central_dir_following_data_size; + mz_uint64 src_archive_bytes_remaining, local_dir_header_ofs; + mz_uint64 cur_src_file_ofs, cur_dst_file_ofs; + mz_uint32 + local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *)local_header_u32; + mz_uint8 new_central_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE]; + size_t orig_central_dir_size; + mz_zip_internal_state *pState; + void *pBuf; + const mz_uint8 *pSrc_central_header; + mz_zip_archive_file_stat src_file_stat; + mz_uint32 src_filename_len, src_comment_len, src_ext_len; + mz_uint32 local_header_filename_size, local_header_extra_len; + mz_uint64 local_header_comp_size, local_header_uncomp_size; + mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE; + + /* Sanity checks */ + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || (!pSource_zip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + /* Don't support copying files from zip64 archives to non-zip64, even though + * in some cases this is possible */ + if ((pSource_zip->m_pState->m_zip64) && (!pZip->m_pState->m_zip64)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Get pointer to the source central dir header and crack it */ + if (NULL == + (pSrc_central_header = mz_zip_get_cdh(pSource_zip, src_file_index))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (MZ_READ_LE32(pSrc_central_header + MZ_ZIP_CDH_SIG_OFS) != + MZ_ZIP_CENTRAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + src_filename_len = + MZ_READ_LE16(pSrc_central_header + MZ_ZIP_CDH_FILENAME_LEN_OFS); + src_comment_len = + MZ_READ_LE16(pSrc_central_header + MZ_ZIP_CDH_COMMENT_LEN_OFS); + src_ext_len = MZ_READ_LE16(pSrc_central_header + MZ_ZIP_CDH_EXTRA_LEN_OFS); + src_central_dir_following_data_size = + src_filename_len + src_ext_len + src_comment_len; + + /* TODO: We don't support central dir's >= MZ_UINT32_MAX bytes right now (+32 + * fudge factor in case we need to add more extra data) */ + if ((pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_central_dir_following_data_size + 32) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + if (!pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + /* TODO: Our zip64 support still has some 32-bit limits that may not be + * worth fixing. */ + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } + + if (!mz_zip_file_stat_internal(pSource_zip, src_file_index, + pSrc_central_header, &src_file_stat, NULL)) + return MZ_FALSE; + + cur_src_file_ofs = src_file_stat.m_local_header_ofs; + cur_dst_file_ofs = pZip->m_archive_size; + + /* Read the source archive's local dir header */ + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_src_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE; + + /* Compute the total size we need to copy (filename+extra data+compressed + * data) */ + local_header_filename_size = + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS); + local_header_extra_len = + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + local_header_comp_size = + MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS); + local_header_uncomp_size = + MZ_READ_LE32(pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS); + src_archive_bytes_remaining = local_header_filename_size + + local_header_extra_len + + src_file_stat.m_comp_size; + + /* Try to find a zip64 extended information field */ + if ((local_header_extra_len) && + ((local_header_comp_size == MZ_UINT32_MAX) || + (local_header_uncomp_size == MZ_UINT32_MAX))) { + mz_zip_array file_data_array; + const mz_uint8 *pExtra_data; + mz_uint32 extra_size_remaining = local_header_extra_len; + + mz_zip_array_init(&file_data_array, 1); + if (!mz_zip_array_resize(pZip, &file_data_array, local_header_extra_len, + MZ_FALSE)) { + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + src_file_stat.m_local_header_ofs + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_size, + file_data_array.m_p, local_header_extra_len) != + local_header_extra_len) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + pExtra_data = (const mz_uint8 *)file_data_array.m_p; + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pSrc_field_data = pExtra_data + sizeof(mz_uint32); + + if (field_data_size < sizeof(mz_uint64) * 2) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data); + local_header_comp_size = MZ_READ_LE64( + pSrc_field_data + + sizeof(mz_uint64)); /* may be 0 if there's a descriptor */ + + found_zip64_ext_data_in_ldir = MZ_TRUE; + break; + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + + mz_zip_array_clear(pZip, &file_data_array); + } + + if (!pState->m_zip64) { + /* Try to detect if the new archive will most likely wind up too big and + * bail early (+(sizeof(mz_uint32) * 4) is for the optional descriptor which + * could be present, +64 is a fudge factor). */ + /* We also check when the archive is finalized so this doesn't need to be + * perfect. */ + mz_uint64 approx_new_archive_size = + cur_dst_file_ofs + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + src_archive_bytes_remaining + + (sizeof(mz_uint32) * 4) + pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + src_central_dir_following_data_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 64; + + if (approx_new_archive_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } + + /* Write dest archive padding */ + if (!mz_zip_writer_write_zeros(pZip, cur_dst_file_ofs, + num_alignment_padding_bytes)) + return MZ_FALSE; + + cur_dst_file_ofs += num_alignment_padding_bytes; + + local_dir_header_ofs = cur_dst_file_ofs; + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((local_dir_header_ofs & (pZip->m_file_offset_alignment - 1)) == + 0); + } + + /* The original zip's local header+ext block doesn't change, even with zip64, + * so we can just copy it over to the dest zip */ + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_dst_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE; + + /* Copy over the source archive bytes to the dest archive, also ensure we have + * enough buf space to handle optional data descriptor */ + if (NULL == (pBuf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + (size_t)MZ_MAX(32U, MZ_MIN((mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE, + src_archive_bytes_remaining))))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + while (src_archive_bytes_remaining) { + n = (mz_uint)MZ_MIN((mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE, + src_archive_bytes_remaining); + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, + n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + cur_src_file_ofs += n; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_dst_file_ofs += n; + + src_archive_bytes_remaining -= n; + } + + /* Now deal with the optional data descriptor */ + bit_flags = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_BIT_FLAG_OFS); + if (bit_flags & 8) { + /* Copy data descriptor */ + if ((pSource_zip->m_pState->m_zip64) || (found_zip64_ext_data_in_ldir)) { + /* src is zip64, dest must be zip64 */ + + /* name uint32_t's */ + /* id 1 (optional in zip64?) */ + /* crc 1 */ + /* comp_size 2 */ + /* uncomp_size 2 */ + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, + pBuf, (sizeof(mz_uint32) * 6)) != + (sizeof(mz_uint32) * 6)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + n = sizeof(mz_uint32) * + ((MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID) ? 6 : 5); + } else { + /* src is NOT zip64 */ + mz_bool has_id; + + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, cur_src_file_ofs, + pBuf, sizeof(mz_uint32) * 4) != + sizeof(mz_uint32) * 4) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + has_id = (MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID); + + if (pZip->m_pState->m_zip64) { + /* dest is zip64, so upgrade the data descriptor */ + const mz_uint32 *pSrc_descriptor = + (const mz_uint32 *)((const mz_uint8 *)pBuf + + (has_id ? sizeof(mz_uint32) : 0)); + const mz_uint32 src_crc32 = pSrc_descriptor[0]; + const mz_uint64 src_comp_size = pSrc_descriptor[1]; + const mz_uint64 src_uncomp_size = pSrc_descriptor[2]; + + mz_write_le32((mz_uint8 *)pBuf, MZ_ZIP_DATA_DESCRIPTOR_ID); + mz_write_le32((mz_uint8 *)pBuf + sizeof(mz_uint32) * 1, src_crc32); + mz_write_le64((mz_uint8 *)pBuf + sizeof(mz_uint32) * 2, src_comp_size); + mz_write_le64((mz_uint8 *)pBuf + sizeof(mz_uint32) * 4, + src_uncomp_size); + + n = sizeof(mz_uint32) * 6; + } else { + /* dest is NOT zip64, just copy it as-is */ + n = sizeof(mz_uint32) * (has_id ? 4 : 3); + } + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_src_file_ofs += n; + cur_dst_file_ofs += n; + } + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + + /* Finally, add the new central dir header */ + orig_central_dir_size = pState->m_central_dir.m_size; + + memcpy(new_central_header, pSrc_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE); + + if (pState->m_zip64) { + /* This is the painful part: We need to write a new central dir header + ext + * block with updated zip64 fields, and ensure the old fields (if any) are + * not included. */ + const mz_uint8 *pSrc_ext = + pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + src_filename_len; + mz_zip_array new_ext_block; + + mz_zip_array_init(&new_ext_block, sizeof(mz_uint8)); + + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, + MZ_UINT32_MAX); + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, + MZ_UINT32_MAX); + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + MZ_UINT32_MAX); + + if (!mz_zip_writer_update_zip64_extension_block( + &new_ext_block, pZip, pSrc_ext, src_ext_len, + &src_file_stat.m_comp_size, &src_file_stat.m_uncomp_size, + &local_dir_header_ofs, NULL)) { + mz_zip_array_clear(pZip, &new_ext_block); + return MZ_FALSE; + } + + MZ_WRITE_LE16(new_central_header + MZ_ZIP_CDH_EXTRA_LEN_OFS, + new_ext_block.m_size); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) { + mz_zip_array_clear(pZip, &new_ext_block); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, + src_filename_len)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, new_ext_block.m_p, + new_ext_block.m_size)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_filename_len + src_ext_len, + src_comment_len)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + mz_zip_array_clear(pZip, &new_ext_block); + } else { + /* sanity checks */ + if (cur_dst_file_ofs > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (local_dir_header_ofs >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + local_dir_header_ofs); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, + src_central_dir_following_data_size)) { + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + } + + /* This shouldn't trigger unless we screwed up during the initial sanity + * checks */ + if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) { + /* TODO: Support central dirs >= 32-bits in size */ + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + } + + n = (mz_uint32)orig_central_dir_size; + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, &n, 1)) { + mz_zip_array_resize(pZip, &pState->m_central_dir, orig_central_dir_size, + MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + pZip->m_total_files++; + pZip->m_archive_size = cur_dst_file_ofs; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip) { + mz_zip_internal_state *pState; + mz_uint64 central_dir_ofs, central_dir_size; + mz_uint8 hdr[256]; + + if ((!pZip) || (!pZip->m_pState) || (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if (pState->m_zip64) { + if ((pZip->m_total_files > MZ_UINT32_MAX) || + (pState->m_central_dir.m_size >= MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if ((pZip->m_total_files > MZ_UINT16_MAX) || + ((pZip->m_archive_size + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } + + central_dir_ofs = 0; + central_dir_size = 0; + if (pZip->m_total_files) { + /* Write central directory */ + central_dir_ofs = pZip->m_archive_size; + central_dir_size = pState->m_central_dir.m_size; + pZip->m_central_directory_file_ofs = central_dir_ofs; + if (pZip->m_pWrite(pZip->m_pIO_opaque, central_dir_ofs, + pState->m_central_dir.m_p, + (size_t)central_dir_size) != central_dir_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += central_dir_size; + } + + if (pState->m_zip64) { + /* Write zip64 end of central directory header */ + mz_uint64 rel_ofs_to_zip64_ecdr = pZip->m_archive_size; + + MZ_CLEAR_OBJ(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDH_SIG_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - sizeof(mz_uint32) - + sizeof(mz_uint64)); + MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS, + 0x031E); /* TODO: always Unix */ + MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS, 0x002D); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, + pZip->m_total_files); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS, + pZip->m_total_files); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_SIZE_OFS, central_dir_size); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_OFS_OFS, central_dir_ofs); + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE; + + /* Write zip64 end of central directory locator */ + MZ_CLEAR_OBJ(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_SIG_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS, + rel_ofs_to_zip64_ecdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS, 1); + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) != + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE; + } + + /* Write end of central directory record */ + MZ_CLEAR_OBJ(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_SIG_OFS, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, + MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files)); + MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS, + MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files)); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_SIZE_OFS, + MZ_MIN(MZ_UINT32_MAX, central_dir_size)); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_OFS_OFS, + MZ_MIN(MZ_UINT32_MAX, central_dir_ofs)); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + +#ifndef MINIZ_NO_STDIO + if ((pState->m_pFile) && (MZ_FFLUSH(pState->m_pFile) == EOF)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); +#endif /* #ifndef MINIZ_NO_STDIO */ + + pZip->m_archive_size += MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE; + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED; + return MZ_TRUE; +} + +mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, void **ppBuf, + size_t *pSize) { + if ((!ppBuf) || (!pSize)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + *ppBuf = NULL; + *pSize = 0; + + if ((!pZip) || (!pZip->m_pState)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_pWrite != mz_zip_heap_write_func) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_finalize_archive(pZip)) + return MZ_FALSE; + + *ppBuf = pZip->m_pState->m_pMem; + *pSize = pZip->m_pState->m_mem_size; + pZip->m_pState->m_pMem = NULL; + pZip->m_pState->m_mem_size = pZip->m_pState->m_mem_capacity = 0; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_end(mz_zip_archive *pZip) { + return mz_zip_writer_end_internal(pZip, MZ_TRUE); +} + +#ifndef MINIZ_NO_STDIO +mz_bool mz_zip_add_mem_to_archive_file_in_place( + const char *pZip_filename, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags) { + return mz_zip_add_mem_to_archive_file_in_place_v2( + pZip_filename, pArchive_name, pBuf, buf_size, pComment, comment_size, + level_and_flags, NULL); +} + +mz_bool mz_zip_add_mem_to_archive_file_in_place_v2( + const char *pZip_filename, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_zip_error *pErr) { + mz_bool status, created_new_archive = MZ_FALSE; + mz_zip_archive zip_archive; + struct MZ_FILE_STAT_STRUCT file_stat; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + mz_zip_zero_struct(&zip_archive); + if ((int)level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + + if ((!pZip_filename) || (!pArchive_name) || ((buf_size) && (!pBuf)) || + ((comment_size) && (!pComment)) || + ((level_and_flags & 0xF) > MZ_UBER_COMPRESSION)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_FILENAME; + return MZ_FALSE; + } + + /* Important: The regular non-64 bit version of stat() can fail here if the + * file is very large, which could cause the archive to be overwritten. */ + /* So be sure to compile with _LARGEFILE64_SOURCE 1 */ + if (MZ_FILE_STAT(pZip_filename, &file_stat) != 0) { + /* Create a new archive. */ + if (!mz_zip_writer_init_file_v2(&zip_archive, pZip_filename, 0, + level_and_flags)) { + if (pErr) + *pErr = zip_archive.m_last_error; + return MZ_FALSE; + } + + created_new_archive = MZ_TRUE; + } else { + /* Append to an existing archive. */ + if (!mz_zip_reader_init_file_v2( + &zip_archive, pZip_filename, + level_and_flags | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, 0, + 0)) { + if (pErr) + *pErr = zip_archive.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_writer_init_from_reader_v2(&zip_archive, pZip_filename, + level_and_flags)) { + if (pErr) + *pErr = zip_archive.m_last_error; + + mz_zip_reader_end_internal(&zip_archive, MZ_FALSE); + + return MZ_FALSE; + } + } + + status = + mz_zip_writer_add_mem_ex(&zip_archive, pArchive_name, pBuf, buf_size, + pComment, comment_size, level_and_flags, 0, 0); + actual_err = zip_archive.m_last_error; + + /* Always finalize, even if adding failed for some reason, so we have a valid + * central directory. (This may not always succeed, but we can try.) */ + if (!mz_zip_writer_finalize_archive(&zip_archive)) { + if (!actual_err) + actual_err = zip_archive.m_last_error; + + status = MZ_FALSE; + } + + if (!mz_zip_writer_end_internal(&zip_archive, status)) { + if (!actual_err) + actual_err = zip_archive.m_last_error; + + status = MZ_FALSE; + } + + if ((!status) && (created_new_archive)) { + /* It's a new archive and something went wrong, so just delete it. */ + int ignoredStatus = MZ_DELETE_FILE(pZip_filename); + (void)ignoredStatus; + } + + if (pErr) + *pErr = actual_err; + + return status; +} + +void *mz_zip_extract_archive_file_to_heap_v2(const char *pZip_filename, + const char *pArchive_name, + const char *pComment, + size_t *pSize, mz_uint flags, + mz_zip_error *pErr) { + mz_uint32 file_index; + mz_zip_archive zip_archive; + void *p = NULL; + + if (pSize) + *pSize = 0; + + if ((!pZip_filename) || (!pArchive_name)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + + return NULL; + } + + mz_zip_zero_struct(&zip_archive); + if (!mz_zip_reader_init_file_v2( + &zip_archive, pZip_filename, + flags | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, 0, 0)) { + if (pErr) + *pErr = zip_archive.m_last_error; + + return NULL; + } + + if (mz_zip_reader_locate_file_v2(&zip_archive, pArchive_name, pComment, flags, + &file_index)) { + p = mz_zip_reader_extract_to_heap(&zip_archive, file_index, pSize, flags); + } + + mz_zip_reader_end_internal(&zip_archive, p != NULL); + + if (pErr) + *pErr = zip_archive.m_last_error; + + return p; +} + +void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, + const char *pArchive_name, + size_t *pSize, mz_uint flags) { + return mz_zip_extract_archive_file_to_heap_v2(pZip_filename, pArchive_name, + NULL, pSize, flags, NULL); +} + +#endif /* #ifndef MINIZ_NO_STDIO */ + +#endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */ + +/* ------------------- Misc utils */ + +mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip) { + return pZip ? pZip->m_zip_mode : MZ_ZIP_MODE_INVALID; +} + +mz_zip_type mz_zip_get_type(mz_zip_archive *pZip) { + return pZip ? pZip->m_zip_type : MZ_ZIP_TYPE_INVALID; +} + +mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, mz_zip_error err_num) { + mz_zip_error prev_err; + + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + prev_err = pZip->m_last_error; + + pZip->m_last_error = err_num; + return prev_err; +} + +mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip) { + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + return pZip->m_last_error; +} + +mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip) { + return mz_zip_set_last_error(pZip, MZ_ZIP_NO_ERROR); +} + +mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip) { + mz_zip_error prev_err; + + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + prev_err = pZip->m_last_error; + + pZip->m_last_error = MZ_ZIP_NO_ERROR; + return prev_err; +} + +const char *mz_zip_get_error_string(mz_zip_error mz_err) { + switch (mz_err) { + case MZ_ZIP_NO_ERROR: + return "no error"; + case MZ_ZIP_UNDEFINED_ERROR: + return "undefined error"; + case MZ_ZIP_TOO_MANY_FILES: + return "too many files"; + case MZ_ZIP_FILE_TOO_LARGE: + return "file too large"; + case MZ_ZIP_UNSUPPORTED_METHOD: + return "unsupported method"; + case MZ_ZIP_UNSUPPORTED_ENCRYPTION: + return "unsupported encryption"; + case MZ_ZIP_UNSUPPORTED_FEATURE: + return "unsupported feature"; + case MZ_ZIP_FAILED_FINDING_CENTRAL_DIR: + return "failed finding central directory"; + case MZ_ZIP_NOT_AN_ARCHIVE: + return "not a ZIP archive"; + case MZ_ZIP_INVALID_HEADER_OR_CORRUPTED: + return "invalid header or archive is corrupted"; + case MZ_ZIP_UNSUPPORTED_MULTIDISK: + return "unsupported multidisk archive"; + case MZ_ZIP_DECOMPRESSION_FAILED: + return "decompression failed or archive is corrupted"; + case MZ_ZIP_COMPRESSION_FAILED: + return "compression failed"; + case MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE: + return "unexpected decompressed size"; + case MZ_ZIP_CRC_CHECK_FAILED: + return "CRC-32 check failed"; + case MZ_ZIP_UNSUPPORTED_CDIR_SIZE: + return "unsupported central directory size"; + case MZ_ZIP_ALLOC_FAILED: + return "allocation failed"; + case MZ_ZIP_FILE_OPEN_FAILED: + return "file open failed"; + case MZ_ZIP_FILE_CREATE_FAILED: + return "file create failed"; + case MZ_ZIP_FILE_WRITE_FAILED: + return "file write failed"; + case MZ_ZIP_FILE_READ_FAILED: + return "file read failed"; + case MZ_ZIP_FILE_CLOSE_FAILED: + return "file close failed"; + case MZ_ZIP_FILE_SEEK_FAILED: + return "file seek failed"; + case MZ_ZIP_FILE_STAT_FAILED: + return "file stat failed"; + case MZ_ZIP_INVALID_PARAMETER: + return "invalid parameter"; + case MZ_ZIP_INVALID_FILENAME: + return "invalid filename"; + case MZ_ZIP_BUF_TOO_SMALL: + return "buffer too small"; + case MZ_ZIP_INTERNAL_ERROR: + return "internal error"; + case MZ_ZIP_FILE_NOT_FOUND: + return "file not found"; + case MZ_ZIP_ARCHIVE_TOO_LARGE: + return "archive is too large"; + case MZ_ZIP_VALIDATION_FAILED: + return "validation failed"; + case MZ_ZIP_WRITE_CALLBACK_FAILED: + return "write callback failed"; + case MZ_ZIP_TOTAL_ERRORS: + return "total errors"; + default: + break; + } + + return "unknown error"; +} + +/* Note: Just because the archive is not zip64 doesn't necessarily mean it + * doesn't have Zip64 extended information extra field, argh. */ +mz_bool mz_zip_is_zip64(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return MZ_FALSE; + + return pZip->m_pState->m_zip64; +} + +size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + + return pZip->m_pState->m_central_dir.m_size; +} + +mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip) { + return pZip ? pZip->m_total_files : 0; +} + +mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip) { + if (!pZip) + return 0; + return pZip->m_archive_size; +} + +mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + return pZip->m_pState->m_file_archive_start_ofs; +} + +MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + return pZip->m_pState->m_pFile; +} + +size_t mz_zip_read_archive_data(mz_zip_archive *pZip, mz_uint64 file_ofs, + void *pBuf, size_t n) { + if ((!pZip) || (!pZip->m_pState) || (!pBuf) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + return pZip->m_pRead(pZip->m_pIO_opaque, file_ofs, pBuf, n); +} + +mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, mz_uint file_index, + char *pFilename, mz_uint filename_buf_size) { + mz_uint n; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + if (filename_buf_size) + pFilename[0] = '\0'; + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return 0; + } + n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + if (filename_buf_size) { + n = MZ_MIN(n, filename_buf_size - 1); + memcpy(pFilename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n); + pFilename[n] = '\0'; + } + return n + 1; +} + +mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, mz_uint file_index, + mz_zip_archive_file_stat *pStat) { + return mz_zip_file_stat_internal( + pZip, file_index, mz_zip_get_cdh(pZip, file_index), pStat, NULL); +} + +mz_bool mz_zip_end(mz_zip_archive *pZip) { + if (!pZip) + return MZ_FALSE; + + if (pZip->m_zip_mode == MZ_ZIP_MODE_READING) + return mz_zip_reader_end(pZip); +#ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + else if ((pZip->m_zip_mode == MZ_ZIP_MODE_WRITING) || + (pZip->m_zip_mode == MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED)) + return mz_zip_writer_end(pZip); +#endif + + return MZ_FALSE; +} + +#ifdef __cplusplus +} +#endif + +#endif /*#ifndef MINIZ_NO_ARCHIVE_APIS*/ diff --git a/external/rlottie/src/lottie/zip/zip.cpp b/external/rlottie/src/lottie/zip/zip.cpp new file mode 100644 index 000000000..d5054c1c1 --- /dev/null +++ b/external/rlottie/src/lottie/zip/zip.cpp @@ -0,0 +1,451 @@ +/* + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ +#define __STDC_WANT_LIB_EXT1__ 1 + +#include +#include +#include + +#if defined(_WIN32) || defined(__WIN32__) || defined(_MSC_VER) || \ + defined(__MINGW32__) +/* Win32, DOS, MSVC, MSVS */ +#include + +#define STRCLONE(STR) ((STR) ? _strdup(STR) : NULL) +#define HAS_DEVICE(P) \ + ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) && \ + (P)[1] == ':') +#define FILESYSTEM_PREFIX_LEN(P) (HAS_DEVICE(P) ? 2 : 0) + +#else + +#include // needed for symlink() +#define STRCLONE(STR) ((STR) ? strdup(STR) : NULL) + +#endif + +#ifdef __MINGW32__ +#include +#include +#endif + +#include "miniz.h" +#include "zip.h" + +#ifdef _MSC_VER +#include + +#define ftruncate(fd, sz) (-(_chsize_s((fd), (sz)) != 0)) +#define fileno _fileno +#endif + +#if defined(__TINYC__) && (defined(_WIN32) || defined(_WIN64)) +#include + +#define ftruncate(fd, sz) (-(_chsize_s((fd), (sz)) != 0)) +#define fileno _fileno +#endif + +#ifndef HAS_DEVICE +#define HAS_DEVICE(P) 0 +#endif + +#ifndef FILESYSTEM_PREFIX_LEN +#define FILESYSTEM_PREFIX_LEN(P) 0 +#endif + +#ifndef ISSLASH +#define ISSLASH(C) ((C) == '/' || (C) == '\\') +#endif + +#define CLEANUP(ptr) \ + do { \ + if (ptr) { \ + free((void *)ptr); \ + ptr = NULL; \ + } \ + } while (0) + +#define UNX_IFDIR 0040000 /* Unix directory */ +#define UNX_IFREG 0100000 /* Unix regular file */ +#define UNX_IFSOCK 0140000 /* Unix socket (BSD, not SysV or Amiga) */ +#define UNX_IFLNK 0120000 /* Unix symbolic link (not SysV, Amiga) */ +#define UNX_IFBLK 0060000 /* Unix block special (not Amiga) */ +#define UNX_IFCHR 0020000 /* Unix character special (not Amiga) */ +#define UNX_IFIFO 0010000 /* Unix fifo (BCC, not MSC or Amiga) */ + +struct zip_entry_t { + ssize_t index; + char *name; + mz_uint64 uncomp_size; + mz_uint64 comp_size; + mz_uint32 uncomp_crc32; + mz_uint64 offset; + mz_uint8 header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + mz_uint64 header_offset; + mz_uint16 method; + mz_zip_writer_add_state state; + tdefl_compressor comp; + mz_uint32 external_attr; + time_t m_time; +}; + +struct zip_t { + mz_zip_archive archive; + mz_uint level; + struct zip_entry_t entry; +}; + +enum zip_modify_t { + MZ_KEEP = 0, + MZ_DELETE = 1, + MZ_MOVE = 2, +}; + +struct zip_entry_mark_t { + ssize_t file_index; + enum zip_modify_t type; + mz_uint64 m_local_header_ofs; + size_t lf_length; +}; + + + +static char *zip_strrpl(const char *str, size_t n, char oldchar, char newchar) { + char c; + size_t i; + char *rpl = (char *)calloc((1 + n), sizeof(char)); + char *begin = rpl; + if (!rpl) { + return NULL; + } + + for (i = 0; (i < n) && (c = *str++); ++i) { + if (c == oldchar) { + c = newchar; + } + *rpl++ = c; + } + + return begin; +} + +static int zip_archive_truncate(mz_zip_archive *pzip) { + mz_zip_internal_state *pState = pzip->m_pState; + mz_uint64 file_size = pzip->m_archive_size; + if ((pzip->m_pWrite == mz_zip_heap_write_func) && (pState->m_pMem)) { + return 0; + } + if (pzip->m_zip_mode == MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED) { + if (pState->m_pFile) { + int fd = fileno(pState->m_pFile); + return ftruncate(fd, file_size); + } + } + return 0; +} + +static inline void zip_archive_finalize(mz_zip_archive *pzip) { + mz_zip_writer_finalize_archive(pzip); + zip_archive_truncate(pzip); +} + +int zip_entry_openbyindex(struct zip_t *zip, size_t index) { + mz_zip_archive *pZip = NULL; + mz_zip_archive_file_stat stats; + mz_uint namelen; + const mz_uint8 *pHeader; + const char *pFilename; + + if (!zip) { + // zip_t handler is not initialized + return ZIP_ENOINIT; + } + + pZip = &(zip->archive); + if (pZip->m_zip_mode != MZ_ZIP_MODE_READING) { + // open by index requires readonly mode + return ZIP_EINVMODE; + } + + if (index >= (size_t)pZip->m_total_files) { + // index out of range + return ZIP_EINVIDX; + } + + if (!(pHeader = &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, + mz_uint32, index)))) { + // cannot find header in central directory + return ZIP_ENOHDR; + } + + namelen = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_FILENAME_LEN_OFS); + pFilename = (const char *)pHeader + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + + /* + .ZIP File Format Specification Version: 6.3.3 + + 4.4.17.1 The name of the file, with optional relative path. + The path stored MUST not contain a drive or + device letter, or a leading slash. All slashes + MUST be forward slashes '/' as opposed to + backwards slashes '\' for compatibility with Amiga + and UNIX file systems etc. If input came from standard + input, there is no file name field. + */ + if (zip->entry.name) { + CLEANUP(zip->entry.name); + } +#ifdef ZIP_RAW_ENTRYNAME + zip->entry.name = STRCLONE(pFilename); +#else + zip->entry.name = zip_strrpl(pFilename, namelen, '\\', '/'); +#endif + + if (!zip->entry.name) { + // local entry name is NULL + return ZIP_EINVENTNAME; + } + + if (!mz_zip_reader_file_stat(pZip, (mz_uint)index, &stats)) { + return ZIP_ENOENT; + } + + zip->entry.index = (ssize_t)index; + zip->entry.comp_size = stats.m_comp_size; + zip->entry.uncomp_size = stats.m_uncomp_size; + zip->entry.uncomp_crc32 = stats.m_crc32; + zip->entry.offset = stats.m_central_dir_ofs; + zip->entry.header_offset = stats.m_local_header_ofs; + zip->entry.method = stats.m_method; + zip->entry.external_attr = stats.m_external_attr; +#ifndef MINIZ_NO_TIME + zip->entry.m_time = stats.m_time; +#endif + + return 0; +} + +int zip_entry_close(struct zip_t *zip) { + mz_zip_archive *pzip = NULL; + mz_uint level; + tdefl_status done; + mz_uint16 entrylen; + mz_uint16 dos_time = 0, dos_date = 0; + int err = 0; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + + if (!zip) { + // zip_t handler is not initialized + err = ZIP_ENOINIT; + goto cleanup; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode == MZ_ZIP_MODE_READING) { + goto cleanup; + } + + level = zip->level & 0xF; + if (level) { + done = tdefl_compress_buffer(&(zip->entry.comp), "", 0, TDEFL_FINISH); + if (done != TDEFL_STATUS_DONE && done != TDEFL_STATUS_OKAY) { + // Cannot flush compressed buffer + err = ZIP_ETDEFLBUF; + goto cleanup; + } + zip->entry.comp_size = zip->entry.state.m_comp_size; + zip->entry.offset = zip->entry.state.m_cur_archive_file_ofs; + zip->entry.method = MZ_DEFLATED; + } + + entrylen = (mz_uint16)strlen(zip->entry.name); +#ifndef MINIZ_NO_TIME + mz_zip_time_t_to_dos_time(zip->entry.m_time, &dos_time, &dos_date); +#endif + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, zip->entry.uncomp_crc32); + MZ_WRITE_LE64(local_dir_footer + 8, zip->entry.comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, zip->entry.uncomp_size); + + if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, local_dir_footer, + local_dir_footer_size) != local_dir_footer_size) { + // Cannot write zip entry header + err = ZIP_EWRTHDR; + goto cleanup; + } + zip->entry.offset += local_dir_footer_size; + + pExtra_data = extra_data; + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (zip->entry.uncomp_size >= MZ_UINT32_MAX) ? &zip->entry.uncomp_size + : NULL, + (zip->entry.comp_size >= MZ_UINT32_MAX) ? &zip->entry.comp_size : NULL, + (zip->entry.header_offset >= MZ_UINT32_MAX) ? &zip->entry.header_offset + : NULL); + + if ((entrylen) && (zip->entry.name[entrylen - 1] == '/') && + !zip->entry.uncomp_size) { + /* Set DOS Subdirectory attribute bit. */ + zip->entry.external_attr |= MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG; + } + + if (!mz_zip_writer_add_to_central_dir( + pzip, zip->entry.name, entrylen, pExtra_data, (mz_uint16)extra_size, + "", 0, zip->entry.uncomp_size, zip->entry.comp_size, + zip->entry.uncomp_crc32, zip->entry.method, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8 | + MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR, + dos_time, dos_date, zip->entry.header_offset, + zip->entry.external_attr, NULL, 0)) { + // Cannot write to zip central dir + err = ZIP_EWRTDIR; + goto cleanup; + } + + pzip->m_total_files++; + pzip->m_archive_size = zip->entry.offset; + +cleanup: + if (zip) { + zip->entry.m_time = 0; + CLEANUP(zip->entry.name); + } + return err; +} + +const char *zip_entry_name(struct zip_t *zip) { + if (!zip) { + // zip_t handler is not initialized + return NULL; + } + + return zip->entry.name; +} + +int zip_entry_write(struct zip_t *zip, const void *buf, size_t bufsize) { + mz_uint level; + mz_zip_archive *pzip = NULL; + tdefl_status status; + + if (!zip) { + // zip_t handler is not initialized + return ZIP_ENOINIT; + } + + pzip = &(zip->archive); + if (buf && bufsize > 0) { + zip->entry.uncomp_size += bufsize; + zip->entry.uncomp_crc32 = (mz_uint32)mz_crc32( + zip->entry.uncomp_crc32, (const mz_uint8 *)buf, bufsize); + + level = zip->level & 0xF; + if (!level) { + if ((pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, buf, + bufsize) != bufsize)) { + // Cannot write buffer + return ZIP_EWRTENT; + } + zip->entry.offset += bufsize; + zip->entry.comp_size += bufsize; + } else { + status = tdefl_compress_buffer(&(zip->entry.comp), buf, bufsize, + TDEFL_NO_FLUSH); + if (status != TDEFL_STATUS_DONE && status != TDEFL_STATUS_OKAY) { + // Cannot compress buffer + return ZIP_ETDEFLBUF; + } + } + } + + return 0; +} + +ssize_t zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize) { + mz_zip_archive *pzip = NULL; + mz_uint idx; + size_t size = 0; + + if (!zip) { + // zip_t handler is not initialized + return (ssize_t)ZIP_ENOINIT; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || + zip->entry.index < (ssize_t)0) { + // the entry is not found or we do not have read access + return (ssize_t)ZIP_ENOENT; + } + + idx = (mz_uint)zip->entry.index; + if (mz_zip_reader_is_file_a_directory(pzip, idx)) { + // the entry is a directory + return (ssize_t)ZIP_EINVENTTYPE; + } + + *buf = mz_zip_reader_extract_to_heap(pzip, idx, &size, 0); + if (*buf && bufsize) { + *bufsize = size; + } + return (ssize_t)size; +} + +struct zip_t *zip_stream_open(const char *stream, size_t size, int level, + char mode) { + struct zip_t *zip = (struct zip_t *)calloc((size_t)1, sizeof(struct zip_t)); + if (!zip) { + return NULL; + } + + if (level < 0) { + level = MZ_DEFAULT_LEVEL; + } + if ((level & 0xF) > MZ_UBER_COMPRESSION) { + // Wrong compression level + goto cleanup; + } + zip->level = (mz_uint)level; + + if ((stream != NULL) && (size > 0) && (mode == 'r')) { + if (!mz_zip_reader_init_mem(&(zip->archive), stream, size, 0)) { + goto cleanup; + } + } else if ((stream == NULL) && (size == 0) && (mode == 'w')) { + // Create a new archive. + if (!mz_zip_writer_init_heap(&(zip->archive), 0, 1024)) { + // Cannot initialize zip_archive writer + goto cleanup; + } + } else { + goto cleanup; + } + return zip; + +cleanup: + CLEANUP(zip); + return NULL; +} + +void zip_stream_close(struct zip_t *zip) { + if (zip) { + mz_zip_writer_end(&(zip->archive)); + mz_zip_reader_end(&(zip->archive)); + CLEANUP(zip); + } +} \ No newline at end of file diff --git a/external/rlottie/src/lottie/zip/zip.h b/external/rlottie/src/lottie/zip/zip.h new file mode 100644 index 000000000..de4d61be7 --- /dev/null +++ b/external/rlottie/src/lottie/zip/zip.h @@ -0,0 +1,156 @@ +/* + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#pragma once +#ifndef ZIP_H +#define ZIP_H + +#include +#include +#include + +#if !defined(_POSIX_C_SOURCE) && defined(_MSC_VER) +// 64-bit Windows is the only mainstream platform +// where sizeof(long) != sizeof(void*) +#ifdef _WIN64 +typedef long long ssize_t; /* byte count or error */ +#else +typedef long ssize_t; /* byte count or error */ +#endif +#endif + +/** + * Default zip compression level. + */ +#define ZIP_DEFAULT_COMPRESSION_LEVEL 6 + +/** + * Error codes + */ +#define ZIP_ENOINIT -1 // not initialized +#define ZIP_EINVENTNAME -2 // invalid entry name +#define ZIP_ENOENT -3 // entry not found +#define ZIP_EINVMODE -4 // invalid zip mode +#define ZIP_EINVLVL -5 // invalid compression level +#define ZIP_ENOSUP64 -6 // no zip 64 support +#define ZIP_EMEMSET -7 // memset error +#define ZIP_EWRTENT -8 // cannot write data to entry +#define ZIP_ETDEFLINIT -9 // cannot initialize tdefl compressor +#define ZIP_EINVIDX -10 // invalid index +#define ZIP_ENOHDR -11 // header not found +#define ZIP_ETDEFLBUF -12 // cannot flush tdefl buffer +#define ZIP_ECRTHDR -13 // cannot create entry header +#define ZIP_EWRTHDR -14 // cannot write entry header +#define ZIP_EWRTDIR -15 // cannot write to central dir +#define ZIP_EOPNFILE -16 // cannot open file +#define ZIP_EINVENTTYPE -17 // invalid entry type +#define ZIP_EMEMNOALLOC -18 // extracting data using no memory allocation +#define ZIP_ENOFILE -19 // file not found +#define ZIP_ENOPERM -20 // no permission +#define ZIP_EOOMEM -21 // out of memory +#define ZIP_EINVZIPNAME -22 // invalid zip archive name +#define ZIP_EMKDIR -23 // make dir error +#define ZIP_ESYMLINK -24 // symlink error +#define ZIP_ECLSZIP -25 // close archive error +#define ZIP_ECAPSIZE -26 // capacity size too small +#define ZIP_EFSEEK -27 // fseek error +#define ZIP_EFREAD -28 // fread error +#define ZIP_EFWRITE -29 // fwrite error + +/** + * @struct zip_t + * + * This data structure is used throughout the library to represent zip archive - + * forward declaration. + */ +struct zip_t; + +/** + * Closes the zip archive, releases resources - always finalize. + * + * @param zip zip archive handler. + */ +void zip_close(struct zip_t *zip); + +/** + * Opens a new entry by index in the zip archive. + * + * This function is only valid if zip archive was opened in 'r' (readonly) mode. + * + * @param zip zip archive handler. + * @param index index in local dictionary. + * + * @return the return code - 0 on success, negative number (< 0) on error. + */ +int zip_entry_openbyindex(struct zip_t *zip, size_t index); + +/** + * Closes a zip entry, flushes buffer and releases resources. + * + * @param zip zip archive handler. + * + * @return the return code - 0 on success, negative number (< 0) on error. + */ +int zip_entry_close(struct zip_t *zip); + +/** + * Returns a local name of the current zip entry. + * + * The main difference between user's entry name and local entry name + * is optional relative path. + * Following .ZIP File Format Specification - the path stored MUST not contain + * a drive or device letter, or a leading slash. + * All slashes MUST be forward slashes '/' as opposed to backwards slashes '\' + * for compatibility with Amiga and UNIX file systems etc. + * + * @param zip: zip archive handler. + * + * @return the pointer to the current zip entry name, or NULL on error. + */ +const char *zip_entry_name(struct zip_t *zip); + +/** + * Extracts the current zip entry into output buffer. + * + * The function allocates sufficient memory for a output buffer. + * + * @param zip zip archive handler. + * @param buf output buffer. + * @param bufsize output buffer size (in bytes). + * + * @note remember to release memory allocated for a output buffer. + * for large entries, please take a look at zip_entry_extract function. + * + * @return the return code - the number of bytes actually read on success. + * Otherwise a negative number (< 0) on error. + */ +ssize_t zip_entry_read(struct zip_t *zip, void **buf, + size_t *bufsize); +/** + * Opens zip archive stream into memory. + * + * @param stream zip archive stream. + * @param size stream size. + * + * @return the zip archive handler or NULL on error + */ +struct zip_t *zip_stream_open(const char *stream, size_t size, + int level, char mode); + +/** + * Close zip archive releases resources. + * + * @param zip zip archive handler. + * + * @return + */ +void zip_stream_close(struct zip_t *zip); + +#endif diff --git a/external/rlottie/src/meson.build b/external/rlottie/src/meson.build index d93a7e37a..df6ea2ed3 100644 --- a/external/rlottie/src/meson.build +++ b/external/rlottie/src/meson.build @@ -16,7 +16,7 @@ subdir('vector') subdir('lottie') subdir('binding') -rlottie_lib_dep = [ vector_dep, lottie_dep, binding_dep] +rlottie_lib_dep = [ vector_dep, zip_dep, lottie_dep, binding_dep] if get_option('thread') == true rlottie_lib_dep += dependency('threads') diff --git a/external/rlottie/src/vector/vraster.cpp b/external/rlottie/src/vector/vraster.cpp index fdf66fb01..8ef7b5713 100644 --- a/external/rlottie/src/vector/vraster.cpp +++ b/external/rlottie/src/vector/vraster.cpp @@ -420,6 +420,11 @@ using VTask = std::shared_ptr; #include #include "vtaskqueue.h" +#ifdef __linux__ +#include +#include +#endif + class RleTaskScheduler { const unsigned _count{std::thread::hardware_concurrency()}; std::vector _threads; @@ -435,6 +440,13 @@ class RleTaskScheduler { SW_FT_Stroker stroker; SW_FT_Stroker_New(&stroker); + // Create Thread Name for Debugging (Linux) +#ifdef __linux__ + std::ostringstream nameStream; + nameStream << "lottie-tsk-" << i; + pthread_setname_np(pthread_self(), nameStream.str().c_str()); +#endif + // Task Loop VTask task; while (true) {