1 /* miniz.c 2.1.0 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing 2 See "unlicense" statement at the end of this file. 3 Rich Geldreich <richgel99@gmail.com>, last updated Oct. 13, 2013 4 Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt 5 6 Most API's defined in miniz.c are optional. For example, to disable the archive related functions just define 7 MINIZ_NO_ARCHIVE_APIS, or to get rid of all stdio usage define MINIZ_NO_STDIO (see the list below for more macros). 8 9 * Low-level Deflate/Inflate implementation notes: 10 11 Compression: Use the "tdefl" API's. The compressor supports raw, static, and dynamic blocks, lazy or 12 greedy parsing, match length filtering, RLE-only, and Huffman-only streams. It performs and compresses 13 approximately as well as zlib. 14 15 Decompression: Use the "tinfl" API's. The entire decompressor is implemented as a single function 16 coroutine: see tinfl_decompress(). It supports decompression into a 32KB (or larger power of 2) wrapping buffer, or into a memory 17 block large enough to hold the entire file. 18 19 The low-level tdefl/tinfl API's do not make any use of dynamic memory allocation. 20 21 * zlib-style API notes: 22 23 miniz.c implements a fairly large subset of zlib. There's enough functionality present for it to be a drop-in 24 zlib replacement in many apps: 25 The z_stream struct, optional memory allocation callbacks 26 deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound 27 inflateInit/inflateInit2/inflate/inflateReset/inflateEnd 28 compress, compress2, compressBound, uncompress 29 CRC-32, Adler-32 - Using modern, minimal code size, CPU cache friendly routines. 30 Supports raw deflate streams or standard zlib streams with adler-32 checking. 31 32 Limitations: 33 The callback API's are not implemented yet. No support for gzip headers or zlib static dictionaries. 34 I've tried to closely emulate zlib's various flavors of stream flushing and return status codes, but 35 there are no guarantees that miniz.c pulls this off perfectly. 36 37 * PNG writing: See the tdefl_write_image_to_png_file_in_memory() function, originally written by 38 Alex Evans. Supports 1-4 bytes/pixel images. 39 40 * ZIP archive API notes: 41 42 The ZIP archive API's where designed with simplicity and efficiency in mind, with just enough abstraction to 43 get the job done with minimal fuss. There are simple API's to retrieve file information, read files from 44 existing archives, create new archives, append new files to existing archives, or clone archive data from 45 one archive to another. It supports archives located in memory or the heap, on disk (using stdio.h), 46 or you can specify custom file read/write callbacks. 47 48 - Archive reading: Just call this function to read a single file from a disk archive: 49 50 void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name, 51 size_t *pSize, mz_uint zip_flags); 52 53 For more complex cases, use the "mz_zip_reader" functions. Upon opening an archive, the entire central 54 directory is located and read as-is into memory, and subsequent file access only occurs when reading individual files. 55 56 - Archives file scanning: The simple way is to use this function to scan a loaded archive for a specific file: 57 58 int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags); 59 60 The locate operation can optionally check file comments too, which (as one example) can be used to identify 61 multiple versions of the same file in an archive. This function uses a simple linear search through the central 62 directory, so it's not very fast. 63 64 Alternately, you can iterate through all the files in an archive (using mz_zip_reader_get_num_files()) and 65 retrieve detailed info on each file by calling mz_zip_reader_file_stat(). 66 67 - Archive creation: Use the "mz_zip_writer" functions. The ZIP writer immediately writes compressed file data 68 to disk and builds an exact image of the central directory in memory. The central directory image is written 69 all at once at the end of the archive file when the archive is finalized. 70 71 The archive writer can optionally align each file's local header and file data to any power of 2 alignment, 72 which can be useful when the archive will be read from optical media. Also, the writer supports placing 73 arbitrary data blobs at the very beginning of ZIP archives. Archives written using either feature are still 74 readable by any ZIP tool. 75 76 - Archive appending: The simple way to add a single file to an archive is to call this function: 77 78 mz_bool mz_zip_add_mem_to_archive_file_in_place(const char *pZip_filename, const char *pArchive_name, 79 const void *pBuf, size_t buf_size, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags); 80 81 The archive will be created if it doesn't already exist, otherwise it'll be appended to. 82 Note the appending is done in-place and is not an atomic operation, so if something goes wrong 83 during the operation it's possible the archive could be left without a central directory (although the local 84 file headers and file data will be fine, so the archive will be recoverable). 85 86 For more complex archive modification scenarios: 87 1. The safest way is to use a mz_zip_reader to read the existing archive, cloning only those bits you want to 88 preserve into a new archive using using the mz_zip_writer_add_from_zip_reader() function (which compiles the 89 compressed file data as-is). When you're done, delete the old archive and rename the newly written archive, and 90 you're done. This is safe but requires a bunch of temporary disk space or heap memory. 91 92 2. Or, you can convert an mz_zip_reader in-place to an mz_zip_writer using mz_zip_writer_init_from_reader(), 93 append new files as needed, then finalize the archive which will write an updated central directory to the 94 original archive. (This is basically what mz_zip_add_mem_to_archive_file_in_place() does.) There's a 95 possibility that the archive's central directory could be lost with this method if anything goes wrong, though. 96 97 - ZIP archive support limitations: 98 No zip64 or spanning support. Extraction functions can only handle unencrypted, stored or deflated files. 99 Requires streams capable of seeking. 100 101 * This is a header file library, like stb_image.c. To get only a header file, either cut and paste the 102 below header, or create miniz.h, #define MINIZ_HEADER_FILE_ONLY, and then include miniz.c from it. 103 104 * Important: For best perf. be sure to customize the below macros for your target platform: 105 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 106 #define MINIZ_LITTLE_ENDIAN 1 107 #define MINIZ_HAS_64BIT_REGISTERS 1 108 109 * On platforms using glibc, Be sure to "#define _LARGEFILE64_SOURCE 1" before including miniz.c to ensure miniz 110 uses the 64-bit variants: fopen64(), stat64(), etc. Otherwise you won't be able to process large files 111 (i.e. 32-bit stat() fails for me on files > 0x7FFFFFFF bytes). 112 */ 113 #pragma once 114 115 /* Hardcoded options for Xtensa - JD */ 116 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 117 #define MINIZ_LITTLE_ENDIAN 1 118 119 120 121 122 123 /* Defines to completely disable specific portions of miniz.c: 124 If all macros here are defined the only functionality remaining will be CRC-32, adler-32, tinfl, and tdefl. */ 125 126 /* Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. */ 127 #define MINIZ_NO_STDIO 128 129 /* If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or */ 130 /* get/set file times, and the C run-time funcs that get/set times won't be called. */ 131 /* The current downside is the times written to your archives will be from 1979. */ 132 #define MINIZ_NO_TIME 133 134 /* Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. */ 135 #define MINIZ_NO_ARCHIVE_APIS 136 137 /* Define MINIZ_NO_ARCHIVE_WRITING_APIS to disable all writing related ZIP archive API's. */ 138 #define MINIZ_NO_ARCHIVE_WRITING_APIS 139 140 /* Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. */ 141 #define MINIZ_NO_ZLIB_APIS 142 143 /* Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. */ 144 #define MINIZ_NO_ZLIB_COMPATIBLE_NAMES 145 146 /* Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc. 147 Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc 148 callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user 149 functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. */ 150 #define MINIZ_NO_MALLOC 151 152 #if defined(__TINYC__) && (defined(__linux) || defined(__linux__)) 153 /* TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux */ 154 #define MINIZ_NO_TIME 155 #endif 156 157 #include <stddef.h> 158 159 #if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS) 160 #include <time.h> 161 #endif 162 163 #if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__) 164 /* MINIZ_X86_OR_X64_CPU is only used to help set the below macros. */ 165 #define MINIZ_X86_OR_X64_CPU 1 166 #else 167 #define MINIZ_X86_OR_X64_CPU 0 168 #endif 169 170 #if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU 171 /* Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. */ 172 #define MINIZ_LITTLE_ENDIAN 1 173 #else 174 #define MINIZ_LITTLE_ENDIAN 0 175 #endif 176 177 /* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES only if not set */ 178 #if !defined(MINIZ_USE_UNALIGNED_LOADS_AND_STORES) 179 #if MINIZ_X86_OR_X64_CPU 180 /* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. */ 181 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 182 #define MINIZ_UNALIGNED_USE_MEMCPY 183 #else 184 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 185 #endif 186 #endif 187 188 #if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__) 189 /* 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). */ 190 #define MINIZ_HAS_64BIT_REGISTERS 1 191 #else 192 #define MINIZ_HAS_64BIT_REGISTERS 0 193 #endif 194 195 #ifdef __cplusplus 196 extern "C" { 197 #endif 198 199 /* ------------------- zlib-style API Definitions. */ 200 201 /* 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! */ 202 typedef unsigned long mz_ulong; 203 204 /* 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. */ 205 void mz_free(void *p); 206 207 #define MZ_ADLER32_INIT (1) 208 /* mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL. */ 209 mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len); 210 211 #define MZ_CRC32_INIT (0) 212 /* mz_crc32() returns the initial CRC-32 value to use when called with ptr==NULL. */ 213 mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len); 214 215 /* Compression strategies. */ 216 enum 217 { 218 MZ_DEFAULT_STRATEGY = 0, 219 MZ_FILTERED = 1, 220 MZ_HUFFMAN_ONLY = 2, 221 MZ_RLE = 3, 222 MZ_FIXED = 4 223 }; 224 225 /* Method */ 226 #define MZ_DEFLATED 8 227 228 /* Heap allocation callbacks. 229 Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long. */ 230 typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size); 231 typedef void (*mz_free_func)(void *opaque, void *address); 232 typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size); 233 234 /* 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. */ 235 enum 236 { 237 MZ_NO_COMPRESSION = 0, 238 MZ_BEST_SPEED = 1, 239 MZ_BEST_COMPRESSION = 9, 240 MZ_UBER_COMPRESSION = 10, 241 MZ_DEFAULT_LEVEL = 6, 242 MZ_DEFAULT_COMPRESSION = -1 243 }; 244 245 #define MZ_VERSION "10.1.0" 246 #define MZ_VERNUM 0xA100 247 #define MZ_VER_MAJOR 10 248 #define MZ_VER_MINOR 1 249 #define MZ_VER_REVISION 0 250 #define MZ_VER_SUBREVISION 0 251 252 #ifndef MINIZ_NO_ZLIB_APIS 253 254 /* 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). */ 255 enum 256 { 257 MZ_NO_FLUSH = 0, 258 MZ_PARTIAL_FLUSH = 1, 259 MZ_SYNC_FLUSH = 2, 260 MZ_FULL_FLUSH = 3, 261 MZ_FINISH = 4, 262 MZ_BLOCK = 5 263 }; 264 265 /* Return status codes. MZ_PARAM_ERROR is non-standard. */ 266 enum 267 { 268 MZ_OK = 0, 269 MZ_STREAM_END = 1, 270 MZ_NEED_DICT = 2, 271 MZ_ERRNO = -1, 272 MZ_STREAM_ERROR = -2, 273 MZ_DATA_ERROR = -3, 274 MZ_MEM_ERROR = -4, 275 MZ_BUF_ERROR = -5, 276 MZ_VERSION_ERROR = -6, 277 MZ_PARAM_ERROR = -10000 278 }; 279 280 /* Window bits */ 281 #define MZ_DEFAULT_WINDOW_BITS 15 282 283 struct mz_internal_state; 284 285 /* Compression/decompression stream struct. */ 286 typedef struct mz_stream_s 287 { 288 const unsigned char *next_in; /* pointer to next byte to read */ 289 unsigned int avail_in; /* number of bytes available at next_in */ 290 mz_ulong total_in; /* total number of bytes consumed so far */ 291 292 unsigned char *next_out; /* pointer to next byte to write */ 293 unsigned int avail_out; /* number of bytes that can be written to next_out */ 294 mz_ulong total_out; /* total number of bytes produced so far */ 295 296 char *msg; /* error msg (unused) */ 297 struct mz_internal_state *state; /* internal state, allocated by zalloc/zfree */ 298 299 mz_alloc_func zalloc; /* optional heap allocation function (defaults to malloc) */ 300 mz_free_func zfree; /* optional heap free function (defaults to free) */ 301 void *opaque; /* heap alloc function user pointer */ 302 303 int data_type; /* data_type (unused) */ 304 mz_ulong adler; /* adler32 of the source or uncompressed data */ 305 mz_ulong reserved; /* not used */ 306 } mz_stream; 307 308 typedef mz_stream *mz_streamp; 309 310 /* Returns the version string of miniz.c. */ 311 const char *mz_version(void); 312 313 /* mz_deflateInit() initializes a compressor with default options: */ 314 /* Parameters: */ 315 /* pStream must point to an initialized mz_stream struct. */ 316 /* level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. */ 317 /* level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. */ 318 /* (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) */ 319 /* Return values: */ 320 /* MZ_OK on success. */ 321 /* MZ_STREAM_ERROR if the stream is bogus. */ 322 /* MZ_PARAM_ERROR if the input parameters are bogus. */ 323 /* MZ_MEM_ERROR on out of memory. */ 324 int mz_deflateInit(mz_streamp pStream, int level); 325 326 /* mz_deflateInit2() is like mz_deflate(), except with more control: */ 327 /* Additional parameters: */ 328 /* method must be MZ_DEFLATED */ 329 /* 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) */ 330 /* mem_level must be between [1, 9] (it's checked but ignored by miniz.c) */ 331 int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy); 332 333 /* Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). */ 334 int mz_deflateReset(mz_streamp pStream); 335 336 /* mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. */ 337 /* Parameters: */ 338 /* 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. */ 339 /* flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. */ 340 /* Return values: */ 341 /* 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). */ 342 /* 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. */ 343 /* MZ_STREAM_ERROR if the stream is bogus. */ 344 /* MZ_PARAM_ERROR if one of the parameters is invalid. */ 345 /* 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.) */ 346 int mz_deflate(mz_streamp pStream, int flush); 347 348 /* mz_deflateEnd() deinitializes a compressor: */ 349 /* Return values: */ 350 /* MZ_OK on success. */ 351 /* MZ_STREAM_ERROR if the stream is bogus. */ 352 int mz_deflateEnd(mz_streamp pStream); 353 354 /* 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. */ 355 mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len); 356 357 /* Single-call compression functions mz_compress() and mz_compress2(): */ 358 /* Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. */ 359 int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); 360 int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level); 361 362 /* mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling mz_compress(). */ 363 mz_ulong mz_compressBound(mz_ulong source_len); 364 365 /* Initializes a decompressor. */ 366 int mz_inflateInit(mz_streamp pStream); 367 368 /* 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: */ 369 /* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */ 370 int mz_inflateInit2(mz_streamp pStream, int window_bits); 371 372 /* Quickly resets a compressor without having to reallocate anything. Same as calling mz_inflateEnd() followed by mz_inflateInit()/mz_inflateInit2(). */ 373 int mz_inflateReset(mz_streamp pStream); 374 375 /* 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. */ 376 /* Parameters: */ 377 /* 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. */ 378 /* flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. */ 379 /* 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). */ 380 /* 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. */ 381 /* Return values: */ 382 /* 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. */ 383 /* 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. */ 384 /* MZ_STREAM_ERROR if the stream is bogus. */ 385 /* MZ_DATA_ERROR if the deflate stream is invalid. */ 386 /* MZ_PARAM_ERROR if one of the parameters is invalid. */ 387 /* 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 */ 388 /* with more input data, or with more room in the output buffer (except when using single call decompression, described above). */ 389 int mz_inflate(mz_streamp pStream, int flush); 390 391 /* Deinitializes a decompressor. */ 392 int mz_inflateEnd(mz_streamp pStream); 393 394 /* Single-call decompression. */ 395 /* Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. */ 396 int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); 397 398 /* Returns a string description of the specified error code, or NULL if the error code is invalid. */ 399 const char *mz_error(int err); 400 401 /* 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. */ 402 /* Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. */ 403 #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES 404 typedef unsigned char Byte; 405 typedef unsigned int uInt; 406 typedef mz_ulong uLong; 407 typedef Byte Bytef; 408 typedef uInt uIntf; 409 typedef char charf; 410 typedef int intf; 411 typedef void *voidpf; 412 typedef uLong uLongf; 413 typedef void *voidp; 414 typedef void *const voidpc; 415 #define Z_NULL 0 416 #define Z_NO_FLUSH MZ_NO_FLUSH 417 #define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH 418 #define Z_SYNC_FLUSH MZ_SYNC_FLUSH 419 #define Z_FULL_FLUSH MZ_FULL_FLUSH 420 #define Z_FINISH MZ_FINISH 421 #define Z_BLOCK MZ_BLOCK 422 #define Z_OK MZ_OK 423 #define Z_STREAM_END MZ_STREAM_END 424 #define Z_NEED_DICT MZ_NEED_DICT 425 #define Z_ERRNO MZ_ERRNO 426 #define Z_STREAM_ERROR MZ_STREAM_ERROR 427 #define Z_DATA_ERROR MZ_DATA_ERROR 428 #define Z_MEM_ERROR MZ_MEM_ERROR 429 #define Z_BUF_ERROR MZ_BUF_ERROR 430 #define Z_VERSION_ERROR MZ_VERSION_ERROR 431 #define Z_PARAM_ERROR MZ_PARAM_ERROR 432 #define Z_NO_COMPRESSION MZ_NO_COMPRESSION 433 #define Z_BEST_SPEED MZ_BEST_SPEED 434 #define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION 435 #define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION 436 #define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY 437 #define Z_FILTERED MZ_FILTERED 438 #define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY 439 #define Z_RLE MZ_RLE 440 #define Z_FIXED MZ_FIXED 441 #define Z_DEFLATED MZ_DEFLATED 442 #define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS 443 #define alloc_func mz_alloc_func 444 #define free_func mz_free_func 445 #define internal_state mz_internal_state 446 #define z_stream mz_stream 447 #define deflateInit mz_deflateInit 448 #define deflateInit2 mz_deflateInit2 449 #define deflateReset mz_deflateReset 450 #define deflate mz_deflate 451 #define deflateEnd mz_deflateEnd 452 #define deflateBound mz_deflateBound 453 #define compress mz_compress 454 #define compress2 mz_compress2 455 #define compressBound mz_compressBound 456 #define inflateInit mz_inflateInit 457 #define inflateInit2 mz_inflateInit2 458 #define inflateReset mz_inflateReset 459 #define inflate mz_inflate 460 #define inflateEnd mz_inflateEnd 461 #define uncompress mz_uncompress 462 #define crc32 mz_crc32 463 #define adler32 mz_adler32 464 #define MAX_WBITS 15 465 #define MAX_MEM_LEVEL 9 466 #define zError mz_error 467 #define ZLIB_VERSION MZ_VERSION 468 #define ZLIB_VERNUM MZ_VERNUM 469 #define ZLIB_VER_MAJOR MZ_VER_MAJOR 470 #define ZLIB_VER_MINOR MZ_VER_MINOR 471 #define ZLIB_VER_REVISION MZ_VER_REVISION 472 #define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION 473 #define zlibVersion mz_version 474 #define zlib_version mz_version() 475 #endif /* #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES */ 476 477 #endif /* MINIZ_NO_ZLIB_APIS */ 478 479 #ifdef __cplusplus 480 } 481 #endif 482 #pragma once 483 #include <assert.h> 484 #include <stdint.h> 485 #include <stdlib.h> 486 #include <string.h> 487 488 /* ------------------- Types and macros */ 489 typedef unsigned char mz_uint8; 490 typedef signed short mz_int16; 491 typedef unsigned short mz_uint16; 492 typedef unsigned int mz_uint32; 493 typedef unsigned int mz_uint; 494 typedef int64_t mz_int64; 495 typedef uint64_t mz_uint64; 496 typedef int mz_bool; 497 498 #define MZ_FALSE (0) 499 #define MZ_TRUE (1) 500 501 /* Works around MSVC's spammy "warning C4127: conditional expression is constant" message. */ 502 #ifdef _MSC_VER 503 #define MZ_MACRO_END while (0, 0) 504 #else 505 #define MZ_MACRO_END while (0) 506 #endif 507 508 #ifdef MINIZ_NO_STDIO 509 #define MZ_FILE void * 510 #else 511 #include <stdio.h> 512 #define MZ_FILE FILE 513 #endif /* #ifdef MINIZ_NO_STDIO */ 514 515 #ifdef MINIZ_NO_TIME 516 typedef struct mz_dummy_time_t_tag 517 { 518 int m_dummy; 519 } mz_dummy_time_t; 520 #define MZ_TIME_T mz_dummy_time_t 521 #else 522 #define MZ_TIME_T time_t 523 #endif 524 525 #define MZ_ASSERT(x) 526 527 #ifdef MINIZ_NO_MALLOC 528 #define MZ_MALLOC(x) NULL 529 #define MZ_FREE(x) (void)x, ((void)0) 530 #define MZ_REALLOC(p, x) NULL 531 #else 532 #define MZ_MALLOC(x) malloc(x) 533 #define MZ_FREE(x) free(x) 534 #define MZ_REALLOC(p, x) realloc(p, x) 535 #endif 536 537 #define MZ_MAX(a, b) (((a) > (b)) ? (a) : (b)) 538 #define MZ_MIN(a, b) (((a) < (b)) ? (a) : (b)) 539 #define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj)) 540 541 #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN 542 #define MZ_READ_LE16(p) *((const mz_uint16 *)(p)) 543 #define MZ_READ_LE32(p) *((const mz_uint32 *)(p)) 544 #else 545 #define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U)) 546 #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)) 547 #endif 548 549 #define MZ_READ_LE64(p) (((mz_uint64)MZ_READ_LE32(p)) | (((mz_uint64)MZ_READ_LE32((const mz_uint8 *)(p) + sizeof(mz_uint32))) << 32U)) 550 551 #ifdef _MSC_VER 552 #define MZ_FORCEINLINE __forceinline 553 #elif defined(__GNUC__) 554 #define MZ_FORCEINLINE __inline__ __attribute__((__always_inline__)) 555 #else 556 #define MZ_FORCEINLINE inline 557 #endif 558 559 #ifdef __cplusplus 560 extern "C" { 561 #endif 562 563 extern void *miniz_def_alloc_func(void *opaque, size_t items, size_t size); 564 extern void miniz_def_free_func(void *opaque, void *address); 565 extern void *miniz_def_realloc_func(void *opaque, void *address, size_t items, size_t size); 566 567 #define MZ_UINT16_MAX (0xFFFFU) 568 #define MZ_UINT32_MAX (0xFFFFFFFFU) 569 570 #ifdef __cplusplus 571 } 572 #endif 573 #pragma once 574 575 576 #ifdef __cplusplus 577 extern "C" { 578 #endif 579 /* ------------------- Low-level Compression API Definitions */ 580 581 /* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently). */ 582 #define TDEFL_LESS_MEMORY 1 583 584 /* tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): */ 585 /* 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). */ 586 enum 587 { 588 TDEFL_HUFFMAN_ONLY = 0, 589 TDEFL_DEFAULT_MAX_PROBES = 128, 590 TDEFL_MAX_PROBES_MASK = 0xFFF 591 }; 592 593 /* 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. */ 594 /* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). */ 595 /* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. */ 596 /* 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). */ 597 /* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) */ 598 /* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */ 599 /* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. */ 600 /* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. */ 601 /* The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). */ 602 enum 603 { 604 TDEFL_WRITE_ZLIB_HEADER = 0x01000, 605 TDEFL_COMPUTE_ADLER32 = 0x02000, 606 TDEFL_GREEDY_PARSING_FLAG = 0x04000, 607 TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000, 608 TDEFL_RLE_MATCHES = 0x10000, 609 TDEFL_FILTER_MATCHES = 0x20000, 610 TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000, 611 TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000 612 }; 613 614 /* High level compression functions: */ 615 /* tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). */ 616 /* On entry: */ 617 /* pSrc_buf, src_buf_len: Pointer and size of source block to compress. */ 618 /* flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. */ 619 /* On return: */ 620 /* Function returns a pointer to the compressed data, or NULL on failure. */ 621 /* *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. */ 622 /* The caller must free() the returned block when it's no longer needed. */ 623 void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags); 624 625 /* tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. */ 626 /* Returns 0 on failure. */ 627 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); 628 629 /* Compresses an image to a compressed PNG file in memory. */ 630 /* On entry: */ 631 /* pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. */ 632 /* The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. */ 633 /* 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 */ 634 /* If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). */ 635 /* On return: */ 636 /* Function returns a pointer to the compressed data, or NULL on failure. */ 637 /* *pLen_out will be set to the size of the PNG image file. */ 638 /* The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. */ 639 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); 640 void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out); 641 642 /* Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. */ 643 typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser); 644 645 /* tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. */ 646 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); 647 648 enum 649 { 650 TDEFL_MAX_HUFF_TABLES = 3, 651 TDEFL_MAX_HUFF_SYMBOLS_0 = 288, 652 TDEFL_MAX_HUFF_SYMBOLS_1 = 32, 653 TDEFL_MAX_HUFF_SYMBOLS_2 = 19, 654 TDEFL_LZ_DICT_SIZE = (8*1024), 655 TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1, 656 TDEFL_MIN_MATCH_LEN = 3, 657 TDEFL_MAX_MATCH_LEN = 258 658 }; 659 660 /* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). */ 661 #if TDEFL_LESS_MEMORY 662 enum 663 { 664 TDEFL_LZ_CODE_BUF_SIZE = 8 * 1024, 665 TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10, 666 TDEFL_MAX_HUFF_SYMBOLS = 288, 667 TDEFL_LZ_HASH_BITS = 12, 668 TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, 669 TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, 670 TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS 671 }; 672 #else 673 enum 674 { 675 TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024, 676 TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10, 677 TDEFL_MAX_HUFF_SYMBOLS = 288, 678 TDEFL_LZ_HASH_BITS = 15, 679 TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, 680 TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, 681 TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS 682 }; 683 #endif 684 685 /* 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. */ 686 typedef enum { 687 TDEFL_STATUS_BAD_PARAM = -2, 688 TDEFL_STATUS_PUT_BUF_FAILED = -1, 689 TDEFL_STATUS_OKAY = 0, 690 TDEFL_STATUS_DONE = 1 691 } tdefl_status; 692 693 /* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */ 694 typedef enum { 695 TDEFL_NO_FLUSH = 0, 696 TDEFL_SYNC_FLUSH = 2, 697 TDEFL_FULL_FLUSH = 3, 698 TDEFL_FINISH = 4 699 } tdefl_flush; 700 701 /* tdefl's compression state structure. */ 702 typedef struct 703 { 704 tdefl_put_buf_func_ptr m_pPut_buf_func; 705 void *m_pPut_buf_user; 706 mz_uint m_flags, m_max_probes[2]; 707 int m_greedy_parsing; 708 mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size; 709 mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end; 710 mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer; 711 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; 712 tdefl_status m_prev_return_status; 713 const void *m_pIn_buf; 714 void *m_pOut_buf; 715 size_t *m_pIn_buf_size, *m_pOut_buf_size; 716 tdefl_flush m_flush; 717 const mz_uint8 *m_pSrc; 718 size_t m_src_buf_left, m_out_buf_ofs; 719 mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1]; 720 mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 721 mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 722 mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 723 mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE]; 724 mz_uint16 m_next[TDEFL_LZ_DICT_SIZE]; 725 mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE]; 726 mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE]; 727 } tdefl_compressor; 728 729 /* Initializes the compressor. */ 730 /* There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. */ 731 /* 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. */ 732 /* If pBut_buf_func is NULL the user should always call the tdefl_compress() API. */ 733 /* flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) */ 734 tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags); 735 736 /* 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. */ 737 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); 738 739 /* tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. */ 740 /* tdefl_compress_buffer() always consumes the entire input buffer. */ 741 tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush); 742 743 tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d); 744 mz_uint32 tdefl_get_adler32(tdefl_compressor *d); 745 746 /* Create tdefl_compress() flags given zlib-style compression parameters. */ 747 /* level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) */ 748 /* window_bits may be -15 (raw deflate) or 15 (zlib) */ 749 /* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */ 750 mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy); 751 752 #ifndef MINIZ_NO_MALLOC 753 /* Allocate the tdefl_compressor structure in C so that */ 754 /* non-C language bindings to tdefl_ API don't need to worry about */ 755 /* structure size and allocation mechanism. */ 756 tdefl_compressor *tdefl_compressor_alloc(void); 757 void tdefl_compressor_free(tdefl_compressor *pComp); 758 #endif 759 760 #ifdef __cplusplus 761 } 762 #endif 763 #pragma once 764 765 /* ------------------- Low-level Decompression API Definitions */ 766 767 #ifdef __cplusplus 768 extern "C" { 769 #endif 770 /* Decompression flags used by tinfl_decompress(). */ 771 /* 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. */ 772 /* 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. */ 773 /* 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). */ 774 /* TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. */ 775 enum 776 { 777 TINFL_FLAG_PARSE_ZLIB_HEADER = 1, 778 TINFL_FLAG_HAS_MORE_INPUT = 2, 779 TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4, 780 TINFL_FLAG_COMPUTE_ADLER32 = 8 781 }; 782 783 /* High level decompression functions: */ 784 /* tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). */ 785 /* On entry: */ 786 /* pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data to decompress. */ 787 /* On return: */ 788 /* Function returns a pointer to the decompressed data, or NULL on failure. */ 789 /* *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. */ 790 /* The caller must call mz_free() on the returned block when it's no longer needed. */ 791 void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags); 792 793 /* tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. */ 794 /* Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. */ 795 #define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1)) 796 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); 797 798 /* 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. */ 799 /* Returns 1 on success or 0 on failure. */ 800 typedef int (*tinfl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser); 801 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); 802 803 struct tinfl_decompressor_tag; 804 typedef struct tinfl_decompressor_tag tinfl_decompressor; 805 806 #ifndef MINIZ_NO_MALLOC 807 /* Allocate the tinfl_decompressor structure in C so that */ 808 /* non-C language bindings to tinfl_ API don't need to worry about */ 809 /* structure size and allocation mechanism. */ 810 tinfl_decompressor *tinfl_decompressor_alloc(void); 811 void tinfl_decompressor_free(tinfl_decompressor *pDecomp); 812 #endif 813 814 /* Max size of LZ dictionary. */ 815 #define TINFL_LZ_DICT_SIZE 32768 816 817 /* Return status. */ 818 typedef enum { 819 /* 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 */ 820 /* 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). */ 821 /* If you call it again with no input you'll just get TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS again. */ 822 TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS = -4, 823 824 /* 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.) */ 825 TINFL_STATUS_BAD_PARAM = -3, 826 827 /* 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. */ 828 TINFL_STATUS_ADLER32_MISMATCH = -2, 829 830 /* 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. */ 831 TINFL_STATUS_FAILED = -1, 832 833 /* Any status code less than TINFL_STATUS_DONE must indicate a failure. */ 834 835 /* 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 */ 836 /* 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. */ 837 TINFL_STATUS_DONE = 0, 838 839 /* 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 */ 840 /* 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 */ 841 /* proceed, so be sure to properly set the TINFL_FLAG_HAS_MORE_INPUT flag. */ 842 TINFL_STATUS_NEEDS_MORE_INPUT = 1, 843 844 /* 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. */ 845 /* 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 */ 846 /* (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 */ 847 /* so I may need to add some code to address this. */ 848 TINFL_STATUS_HAS_MORE_OUTPUT = 2 849 } tinfl_status; 850 851 /* Initializes the decompressor to its initial state. */ 852 #define tinfl_init(r) \ 853 do \ 854 { \ 855 (r)->m_state = 0; \ 856 } \ 857 MZ_MACRO_END 858 #define tinfl_get_adler32(r) (r)->m_check_adler32 859 860 /* 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. */ 861 /* 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. */ 862 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); 863 864 /* Internal/private bits follow. */ 865 enum 866 { 867 TINFL_MAX_HUFF_TABLES = 3, 868 TINFL_MAX_HUFF_SYMBOLS_0 = 288, 869 TINFL_MAX_HUFF_SYMBOLS_1 = 32, 870 TINFL_MAX_HUFF_SYMBOLS_2 = 19, 871 TINFL_FAST_LOOKUP_BITS = 10, 872 TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS 873 }; 874 875 typedef struct 876 { 877 mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0]; 878 mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2]; 879 } tinfl_huff_table; 880 881 #if MINIZ_HAS_64BIT_REGISTERS 882 #define TINFL_USE_64BIT_BITBUF 1 883 #else 884 #define TINFL_USE_64BIT_BITBUF 0 885 #endif 886 887 #if TINFL_USE_64BIT_BITBUF 888 typedef mz_uint64 tinfl_bit_buf_t; 889 #define TINFL_BITBUF_SIZE (64) 890 #else 891 typedef mz_uint32 tinfl_bit_buf_t; 892 #define TINFL_BITBUF_SIZE (32) 893 #endif 894 895 struct tinfl_decompressor_tag 896 { 897 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]; 898 tinfl_bit_buf_t m_bit_buf; 899 size_t m_dist_from_out_buf_start; 900 tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES]; 901 mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137]; 902 }; 903 904 #ifdef __cplusplus 905 } 906 #endif 907 908 #pragma once 909 910 911 /* ------------------- ZIP archive reading/writing */ 912 913 #ifndef MINIZ_NO_ARCHIVE_APIS 914 915 #ifdef __cplusplus 916 extern "C" { 917 #endif 918 919 enum 920 { 921 /* Note: These enums can be reduced as needed to save memory or stack space - they are pretty conservative. */ 922 MZ_ZIP_MAX_IO_BUF_SIZE = 64 * 1024, 923 MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 512, 924 MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 512 925 }; 926 927 typedef struct 928 { 929 /* Central directory file index. */ 930 mz_uint32 m_file_index; 931 932 /* 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. */ 933 mz_uint64 m_central_dir_ofs; 934 935 /* These fields are copied directly from the zip's central dir. */ 936 mz_uint16 m_version_made_by; 937 mz_uint16 m_version_needed; 938 mz_uint16 m_bit_flag; 939 mz_uint16 m_method; 940 941 #ifndef MINIZ_NO_TIME 942 MZ_TIME_T m_time; 943 #endif 944 945 /* CRC-32 of uncompressed data. */ 946 mz_uint32 m_crc32; 947 948 /* File's compressed size. */ 949 mz_uint64 m_comp_size; 950 951 /* 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. */ 952 mz_uint64 m_uncomp_size; 953 954 /* Zip internal and external file attributes. */ 955 mz_uint16 m_internal_attr; 956 mz_uint32 m_external_attr; 957 958 /* Entry's local header file offset in bytes. */ 959 mz_uint64 m_local_header_ofs; 960 961 /* Size of comment in bytes. */ 962 mz_uint32 m_comment_size; 963 964 /* MZ_TRUE if the entry appears to be a directory. */ 965 mz_bool m_is_directory; 966 967 /* MZ_TRUE if the entry uses encryption/strong encryption (which miniz_zip doesn't support) */ 968 mz_bool m_is_encrypted; 969 970 /* MZ_TRUE if the file is not encrypted, a patch file, and if it uses a compression method we support. */ 971 mz_bool m_is_supported; 972 973 /* Filename. If string ends in '/' it's a subdirectory entry. */ 974 /* Guaranteed to be zero terminated, may be truncated to fit. */ 975 char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE]; 976 977 /* Comment field. */ 978 /* Guaranteed to be zero terminated, may be truncated to fit. */ 979 char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE]; 980 981 } mz_zip_archive_file_stat; 982 983 typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n); 984 typedef size_t (*mz_file_write_func)(void *pOpaque, mz_uint64 file_ofs, const void *pBuf, size_t n); 985 typedef mz_bool (*mz_file_needs_keepalive)(void *pOpaque); 986 987 struct mz_zip_internal_state_tag; 988 typedef struct mz_zip_internal_state_tag mz_zip_internal_state; 989 990 typedef enum { 991 MZ_ZIP_MODE_INVALID = 0, 992 MZ_ZIP_MODE_READING = 1, 993 MZ_ZIP_MODE_WRITING = 2, 994 MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3 995 } mz_zip_mode; 996 997 typedef enum { 998 MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100, 999 MZ_ZIP_FLAG_IGNORE_PATH = 0x0200, 1000 MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400, 1001 MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800, 1002 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) */ 1003 MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY = 0x2000, /* validate the local headers, but don't decompress the entire file and check the crc32 */ 1004 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 */ 1005 MZ_ZIP_FLAG_WRITE_ALLOW_READING = 0x8000, 1006 MZ_ZIP_FLAG_ASCII_FILENAME = 0x10000 1007 } mz_zip_flags; 1008 1009 typedef enum { 1010 MZ_ZIP_TYPE_INVALID = 0, 1011 MZ_ZIP_TYPE_USER, 1012 MZ_ZIP_TYPE_MEMORY, 1013 MZ_ZIP_TYPE_HEAP, 1014 MZ_ZIP_TYPE_FILE, 1015 MZ_ZIP_TYPE_CFILE, 1016 MZ_ZIP_TOTAL_TYPES 1017 } mz_zip_type; 1018 1019 /* miniz error codes. Be sure to update mz_zip_get_error_string() if you add or modify this enum. */ 1020 typedef enum { 1021 MZ_ZIP_NO_ERROR = 0, 1022 MZ_ZIP_UNDEFINED_ERROR, 1023 MZ_ZIP_TOO_MANY_FILES, 1024 MZ_ZIP_FILE_TOO_LARGE, 1025 MZ_ZIP_UNSUPPORTED_METHOD, 1026 MZ_ZIP_UNSUPPORTED_ENCRYPTION, 1027 MZ_ZIP_UNSUPPORTED_FEATURE, 1028 MZ_ZIP_FAILED_FINDING_CENTRAL_DIR, 1029 MZ_ZIP_NOT_AN_ARCHIVE, 1030 MZ_ZIP_INVALID_HEADER_OR_CORRUPTED, 1031 MZ_ZIP_UNSUPPORTED_MULTIDISK, 1032 MZ_ZIP_DECOMPRESSION_FAILED, 1033 MZ_ZIP_COMPRESSION_FAILED, 1034 MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE, 1035 MZ_ZIP_CRC_CHECK_FAILED, 1036 MZ_ZIP_UNSUPPORTED_CDIR_SIZE, 1037 MZ_ZIP_ALLOC_FAILED, 1038 MZ_ZIP_FILE_OPEN_FAILED, 1039 MZ_ZIP_FILE_CREATE_FAILED, 1040 MZ_ZIP_FILE_WRITE_FAILED, 1041 MZ_ZIP_FILE_READ_FAILED, 1042 MZ_ZIP_FILE_CLOSE_FAILED, 1043 MZ_ZIP_FILE_SEEK_FAILED, 1044 MZ_ZIP_FILE_STAT_FAILED, 1045 MZ_ZIP_INVALID_PARAMETER, 1046 MZ_ZIP_INVALID_FILENAME, 1047 MZ_ZIP_BUF_TOO_SMALL, 1048 MZ_ZIP_INTERNAL_ERROR, 1049 MZ_ZIP_FILE_NOT_FOUND, 1050 MZ_ZIP_ARCHIVE_TOO_LARGE, 1051 MZ_ZIP_VALIDATION_FAILED, 1052 MZ_ZIP_WRITE_CALLBACK_FAILED, 1053 MZ_ZIP_TOTAL_ERRORS 1054 } mz_zip_error; 1055 1056 typedef struct 1057 { 1058 mz_uint64 m_archive_size; 1059 mz_uint64 m_central_directory_file_ofs; 1060 1061 /* We only support up to UINT32_MAX files in zip64 mode. */ 1062 mz_uint32 m_total_files; 1063 mz_zip_mode m_zip_mode; 1064 mz_zip_type m_zip_type; 1065 mz_zip_error m_last_error; 1066 1067 mz_uint64 m_file_offset_alignment; 1068 1069 mz_alloc_func m_pAlloc; 1070 mz_free_func m_pFree; 1071 mz_realloc_func m_pRealloc; 1072 void *m_pAlloc_opaque; 1073 1074 mz_file_read_func m_pRead; 1075 mz_file_write_func m_pWrite; 1076 mz_file_needs_keepalive m_pNeeds_keepalive; 1077 void *m_pIO_opaque; 1078 1079 mz_zip_internal_state *m_pState; 1080 1081 } mz_zip_archive; 1082 1083 typedef struct 1084 { 1085 mz_zip_archive *pZip; 1086 mz_uint flags; 1087 1088 int status; 1089 #ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS 1090 mz_uint file_crc32; 1091 #endif 1092 mz_uint64 read_buf_size, read_buf_ofs, read_buf_avail, comp_remaining, out_buf_ofs, cur_file_ofs; 1093 mz_zip_archive_file_stat file_stat; 1094 void *pRead_buf; 1095 void *pWrite_buf; 1096 1097 size_t out_blk_remain; 1098 1099 tinfl_decompressor inflator; 1100 1101 } mz_zip_reader_extract_iter_state; 1102 1103 /* -------- ZIP reading */ 1104 1105 /* Inits a ZIP archive reader. */ 1106 /* These functions read and validate the archive's central directory. */ 1107 mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, mz_uint flags); 1108 1109 mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, size_t size, mz_uint flags); 1110 1111 #ifndef MINIZ_NO_STDIO 1112 /* Read a archive from a disk file. */ 1113 /* file_start_ofs is the file offset where the archive actually begins, or 0. */ 1114 /* 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. */ 1115 mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint32 flags); 1116 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); 1117 1118 /* Read an archive from an already opened FILE, beginning at the current file position. */ 1119 /* 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. */ 1120 /* The FILE will NOT be closed when mz_zip_reader_end() is called. */ 1121 mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, mz_uint64 archive_size, mz_uint flags); 1122 #endif 1123 1124 /* Ends archive reading, freeing all allocations, and closing the input archive file if mz_zip_reader_init_file() was used. */ 1125 mz_bool mz_zip_reader_end(mz_zip_archive *pZip); 1126 1127 /* -------- ZIP reading or writing */ 1128 1129 /* Clears a mz_zip_archive struct to all zeros. */ 1130 /* Important: This must be done before passing the struct to any mz_zip functions. */ 1131 void mz_zip_zero_struct(mz_zip_archive *pZip); 1132 1133 mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip); 1134 mz_zip_type mz_zip_get_type(mz_zip_archive *pZip); 1135 1136 /* Returns the total number of files in the archive. */ 1137 mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip); 1138 1139 mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip); 1140 mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip); 1141 MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip); 1142 1143 /* Reads n bytes of raw archive data, starting at file offset file_ofs, to pBuf. */ 1144 size_t mz_zip_read_archive_data(mz_zip_archive *pZip, mz_uint64 file_ofs, void *pBuf, size_t n); 1145 1146 /* All mz_zip funcs set the m_last_error field in the mz_zip_archive struct. These functions retrieve/manipulate this field. */ 1147 /* Note that the m_last_error functionality is not thread safe. */ 1148 mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, mz_zip_error err_num); 1149 mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip); 1150 mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip); 1151 mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip); 1152 const char *mz_zip_get_error_string(mz_zip_error mz_err); 1153 1154 /* MZ_TRUE if the archive file entry is a directory entry. */ 1155 mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, mz_uint file_index); 1156 1157 /* MZ_TRUE if the file is encrypted/strong encrypted. */ 1158 mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, mz_uint file_index); 1159 1160 /* MZ_TRUE if the compression method is supported, and the file is not encrypted, and the file is not a compressed patch file. */ 1161 mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, mz_uint file_index); 1162 1163 /* Retrieves the filename of an archive file entry. */ 1164 /* 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. */ 1165 mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, mz_uint file_index, char *pFilename, mz_uint filename_buf_size); 1166 1167 /* Attempts to locates a file in the archive's central directory. */ 1168 /* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */ 1169 /* Returns -1 if the file cannot be found. */ 1170 int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags); 1171 int mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags, mz_uint32 *file_index); 1172 1173 /* Returns detailed information about an archive file entry. */ 1174 mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, mz_uint file_index, mz_zip_archive_file_stat *pStat); 1175 1176 /* MZ_TRUE if the file is in zip64 format. */ 1177 /* 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. */ 1178 mz_bool mz_zip_is_zip64(mz_zip_archive *pZip); 1179 1180 /* Returns the total central directory size in bytes. */ 1181 /* The current max supported size is <= MZ_UINT32_MAX. */ 1182 size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip); 1183 1184 /* Extracts a archive file to a memory buffer using no memory allocation. */ 1185 /* There must be at least enough room on the stack to store the inflator's state (~34KB or so). */ 1186 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); 1187 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); 1188 1189 /* Extracts a archive file to a memory buffer. */ 1190 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); 1191 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); 1192 1193 /* Extracts a archive file to a dynamically allocated heap buffer. */ 1194 /* The memory will be allocated via the mz_zip_archive's alloc/realloc functions. */ 1195 /* Returns NULL and sets the last error on failure. */ 1196 void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index, size_t *pSize, mz_uint flags); 1197 void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, const char *pFilename, size_t *pSize, mz_uint flags); 1198 1199 /* Extracts a archive file using a callback function to output the file's data. */ 1200 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); 1201 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); 1202 1203 /* Extract a file iteratively */ 1204 mz_zip_reader_extract_iter_state* mz_zip_reader_extract_iter_new(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags); 1205 mz_zip_reader_extract_iter_state* mz_zip_reader_extract_file_iter_new(mz_zip_archive *pZip, const char *pFilename, mz_uint flags); 1206 size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state* pState, void* pvBuf, size_t buf_size); 1207 mz_bool mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state* pState); 1208 1209 #ifndef MINIZ_NO_STDIO 1210 /* Extracts a archive file to a disk file and sets its last accessed and modified times. */ 1211 /* This function only extracts files, not archive directory records. */ 1212 mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, mz_uint file_index, const char *pDst_filename, mz_uint flags); 1213 mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive *pZip, const char *pArchive_filename, const char *pDst_filename, mz_uint flags); 1214 1215 /* Extracts a archive file starting at the current position in the destination FILE stream. */ 1216 mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, mz_uint file_index, MZ_FILE *File, mz_uint flags); 1217 mz_bool mz_zip_reader_extract_file_to_cfile(mz_zip_archive *pZip, const char *pArchive_filename, MZ_FILE *pFile, mz_uint flags); 1218 #endif 1219 1220 #if 0 1221 /* TODO */ 1222 typedef void *mz_zip_streaming_extract_state_ptr; 1223 mz_zip_streaming_extract_state_ptr mz_zip_streaming_extract_begin(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags); 1224 uint64_t mz_zip_streaming_extract_get_size(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); 1225 uint64_t mz_zip_streaming_extract_get_cur_ofs(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); 1226 mz_bool mz_zip_streaming_extract_seek(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, uint64_t new_ofs); 1227 size_t mz_zip_streaming_extract_read(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, void *pBuf, size_t buf_size); 1228 mz_bool mz_zip_streaming_extract_end(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); 1229 #endif 1230 1231 /* 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. */ 1232 /* It also validates that each file can be successfully uncompressed unless the MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY is specified. */ 1233 mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags); 1234 1235 /* Validates an entire archive by calling mz_zip_validate_file() on each file. */ 1236 mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags); 1237 1238 /* Misc utils/helpers, valid for ZIP reading or writing */ 1239 mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, mz_uint flags, mz_zip_error *pErr); 1240 mz_bool mz_zip_validate_file_archive(const char *pFilename, mz_uint flags, mz_zip_error *pErr); 1241 1242 /* Universal end function - calls either mz_zip_reader_end() or mz_zip_writer_end(). */ 1243 mz_bool mz_zip_end(mz_zip_archive *pZip); 1244 1245 /* -------- ZIP writing */ 1246 1247 #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS 1248 1249 /* Inits a ZIP archive writer. */ 1250 /*Set pZip->m_pWrite (and pZip->m_pIO_opaque) before calling mz_zip_writer_init or mz_zip_writer_init_v2*/ 1251 /*The output is streamable, i.e. file_ofs in mz_file_write_func always increases only by n*/ 1252 mz_bool mz_zip_writer_init(mz_zip_archive *pZip, mz_uint64 existing_size); 1253 mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, mz_uint64 existing_size, mz_uint flags); 1254 1255 mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, size_t initial_allocation_size); 1256 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); 1257 1258 #ifndef MINIZ_NO_STDIO 1259 mz_bool mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint64 size_to_reserve_at_beginning); 1260 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); 1261 mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, mz_uint flags); 1262 #endif 1263 1264 /* Converts a ZIP archive reader object into a writer object, to allow efficient in-place file appends to occur on an existing archive. */ 1265 /* 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. */ 1266 /* 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). */ 1267 /* Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's user provided m_pWrite function cannot be NULL. */ 1268 /* Note: In-place archive modification is not recommended unless you know what you're doing, because if execution stops or something goes wrong before */ 1269 /* the archive is finalized the file's central directory will be hosed. */ 1270 mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, const char *pFilename); 1271 mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, const char *pFilename, mz_uint flags); 1272 1273 /* Adds the contents of a memory buffer to an archive. These functions record the current local time into the archive. */ 1274 /* To add a directory entry, call this method with an archive name ending in a forwardslash with an empty buffer. */ 1275 /* 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. */ 1276 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); 1277 1278 /* Like mz_zip_writer_add_mem(), except you can specify a file comment field, and optionally supply the function with already compressed data. */ 1279 /* uncomp_size/uncomp_crc32 are only used if the MZ_ZIP_FLAG_COMPRESSED_DATA flag is specified. */ 1280 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, 1281 mz_uint64 uncomp_size, mz_uint32 uncomp_crc32); 1282 1283 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, 1284 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, 1285 const char *user_extra_data_central, mz_uint user_extra_data_central_len); 1286 1287 /* Adds the contents of a file to an archive. This function also records the disk file's modified time into the archive. */ 1288 /* File data is supplied via a read callback function. User mz_zip_writer_add_(c)file to add a file directly.*/ 1289 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 size_to_add, 1290 const MZ_TIME_T *pFile_time, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags, const char *user_extra_data_local, mz_uint user_extra_data_local_len, 1291 const char *user_extra_data_central, mz_uint user_extra_data_central_len); 1292 1293 #ifndef MINIZ_NO_STDIO 1294 /* Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. */ 1295 /* 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. */ 1296 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); 1297 1298 /* Like mz_zip_writer_add_file(), except the file data is read from the specified FILE stream. */ 1299 mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name, MZ_FILE *pSrc_file, mz_uint64 size_to_add, 1300 const MZ_TIME_T *pFile_time, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags, const char *user_extra_data_local, mz_uint user_extra_data_local_len, 1301 const char *user_extra_data_central, mz_uint user_extra_data_central_len); 1302 #endif 1303 1304 /* Adds a file to an archive by fully cloning the data from another archive. */ 1305 /* 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. */ 1306 mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, mz_zip_archive *pSource_zip, mz_uint src_file_index); 1307 1308 /* Finalizes the archive by writing the central directory records followed by the end of central directory record. */ 1309 /* After an archive is finalized, the only valid call on the mz_zip_archive struct is mz_zip_writer_end(). */ 1310 /* An archive must be manually finalized by calling this function for it to be valid. */ 1311 mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip); 1312 1313 /* Finalizes a heap archive, returning a poiner to the heap block and its size. */ 1314 /* The heap block will be allocated using the mz_zip_archive's alloc/realloc callbacks. */ 1315 mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, void **ppBuf, size_t *pSize); 1316 1317 /* Ends archive writing, freeing all allocations, and closing the output file if mz_zip_writer_init_file() was used. */ 1318 /* Note for the archive to be valid, it *must* have been finalized before ending (this function will not do it for you). */ 1319 mz_bool mz_zip_writer_end(mz_zip_archive *pZip); 1320 1321 /* -------- Misc. high-level helper functions: */ 1322 1323 /* mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) appends a memory blob to a ZIP archive. */ 1324 /* 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). */ 1325 /* 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. */ 1326 /* 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. */ 1327 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); 1328 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); 1329 1330 /* Reads a single file from an archive into a heap block. */ 1331 /* If pComment is not NULL, only the file with the specified comment will be extracted. */ 1332 /* Returns NULL on failure. */ 1333 void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name, size_t *pSize, mz_uint flags); 1334 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); 1335 1336 #endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */ 1337 1338 #ifdef __cplusplus 1339 } 1340 #endif 1341 1342 #endif /* MINIZ_NO_ARCHIVE_APIS */ 1343
