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*/
1 /*
2 * SPDX-License-Identifier: MIT
3 * Copyright 2013-2014 RAD Game Tools and Valve Software
4 * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
5 */
6
7 /* miniz.h -- 3.1.0 (c883286f1a6443720e7705450f59e579a4bbb8e2) May 22 2025 */
8
9 #ifndef MINIZ_EXPORT
10 # define MINIZ_EXPORT
11 #endif
12
13 /* miniz.c 3.1.0 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
14 See "unlicense" statement at the end of this file.
15 Rich Geldreich <richgel99@gmail.com>, last updated Oct. 13, 2013
16 Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
17
18 Most API's defined in miniz.c are optional. For example, to disable the archive related functions just define
19 MINIZ_NO_ARCHIVE_APIS, or to get rid of all stdio usage define MINIZ_NO_STDIO (see the list below for more macros).
20
21 * Low-level Deflate/Inflate implementation notes:
22
23 Compression: Use the "tdefl" API's. The compressor supports raw, static, and dynamic blocks, lazy or
24 greedy parsing, match length filtering, RLE-only, and Huffman-only streams. It performs and compresses
25 approximately as well as zlib.
26
27 Decompression: Use the "tinfl" API's. The entire decompressor is implemented as a single function
28 coroutine: see tinfl_decompress(). It supports decompression into a 32KB (or larger power of 2) wrapping buffer, or into a memory
29 block large enough to hold the entire file.
30
31 The low-level tdefl/tinfl API's do not make any use of dynamic memory allocation.
32
33 * zlib-style API notes:
34
35 miniz.c implements a fairly large subset of zlib. There's enough functionality present for it to be a drop-in
36 zlib replacement in many apps:
37 The z_stream struct, optional memory allocation callbacks
38 deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound
39 inflateInit/inflateInit2/inflate/inflateReset/inflateEnd
40 compress, compress2, compressBound, uncompress
41 CRC-32, Adler-32 - Using modern, minimal code size, CPU cache friendly routines.
42 Supports raw deflate streams or standard zlib streams with adler-32 checking.
43
44 Limitations:
45 The callback API's are not implemented yet. No support for gzip headers or zlib static dictionaries.
46 I've tried to closely emulate zlib's various flavors of stream flushing and return status codes, but
47 there are no guarantees that miniz.c pulls this off perfectly.
48
49 * PNG writing: See the tdefl_write_image_to_png_file_in_memory() function, originally written by
50 Alex Evans. Supports 1-4 bytes/pixel images.
51
52 * ZIP archive API notes:
53
54 The ZIP archive API's where designed with simplicity and efficiency in mind, with just enough abstraction to
55 get the job done with minimal fuss. There are simple API's to retrieve file information, read files from
56 existing archives, create new archives, append new files to existing archives, or clone archive data from
57 one archive to another. It supports archives located in memory or the heap, on disk (using stdio.h),
58 or you can specify custom file read/write callbacks.
59
60 - Archive reading: Just call this function to read a single file from a disk archive:
61
62 void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name,
63 size_t *pSize, mz_uint zip_flags);
64
65 For more complex cases, use the "mz_zip_reader" functions. Upon opening an archive, the entire central
66 directory is located and read as-is into memory, and subsequent file access only occurs when reading individual files.
67
68 - Archives file scanning: The simple way is to use this function to scan a loaded archive for a specific file:
69
70 int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags);
71
72 The locate operation can optionally check file comments too, which (as one example) can be used to identify
73 multiple versions of the same file in an archive. This function uses a simple linear search through the central
74 directory, so it's not very fast.
75
76 Alternately, you can iterate through all the files in an archive (using mz_zip_reader_get_num_files()) and
77 retrieve detailed info on each file by calling mz_zip_reader_file_stat().
78
79 - Archive creation: Use the "mz_zip_writer" functions. The ZIP writer immediately writes compressed file data
80 to disk and builds an exact image of the central directory in memory. The central directory image is written
81 all at once at the end of the archive file when the archive is finalized.
82
83 The archive writer can optionally align each file's local header and file data to any power of 2 alignment,
84 which can be useful when the archive will be read from optical media. Also, the writer supports placing
85 arbitrary data blobs at the very beginning of ZIP archives. Archives written using either feature are still
86 readable by any ZIP tool.
87
88 - Archive appending: The simple way to add a single file to an archive is to call this function:
89
90 mz_bool mz_zip_add_mem_to_archive_file_in_place(const char *pZip_filename, const char *pArchive_name,
91 const void *pBuf, size_t buf_size, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags);
92
93 The archive will be created if it doesn't already exist, otherwise it'll be appended to.
94 Note the appending is done in-place and is not an atomic operation, so if something goes wrong
95 during the operation it's possible the archive could be left without a central directory (although the local
96 file headers and file data will be fine, so the archive will be recoverable).
97
98 For more complex archive modification scenarios:
99 1. The safest way is to use a mz_zip_reader to read the existing archive, cloning only those bits you want to
100 preserve into a new archive using using the mz_zip_writer_add_from_zip_reader() function (which compiles the
101 compressed file data as-is). When you're done, delete the old archive and rename the newly written archive, and
102 you're done. This is safe but requires a bunch of temporary disk space or heap memory.
103
104 2. Or, you can convert an mz_zip_reader in-place to an mz_zip_writer using mz_zip_writer_init_from_reader(),
105 append new files as needed, then finalize the archive which will write an updated central directory to the
106 original archive. (This is basically what mz_zip_add_mem_to_archive_file_in_place() does.) There's a
107 possibility that the archive's central directory could be lost with this method if anything goes wrong, though.
108
109 - ZIP archive support limitations:
110 No spanning support. Extraction functions can only handle unencrypted, stored or deflated files.
111 Requires streams capable of seeking.
112
113 * This is a header file library, like stb_image.c. To get only a header file, either cut and paste the
114 below header, or create miniz.h, #define MINIZ_HEADER_FILE_ONLY, and then include miniz.c from it.
115
116 * Important: For best perf. be sure to customize the below macros for your target platform:
117 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1
118 #define MINIZ_LITTLE_ENDIAN 1
119 #define MINIZ_HAS_64BIT_REGISTERS 1
120
121 * On platforms using glibc, Be sure to "#define _LARGEFILE64_SOURCE 1" before including miniz.c to ensure miniz
122 uses the 64-bit variants: fopen64(), stat64(), etc. Otherwise you won't be able to process large files
123 (i.e. 32-bit stat() fails for me on files > 0x7FFFFFFF bytes).
124 */
125 #pragma once
126
127 /* Defines to completely disable specific portions of miniz.c:
128 If all macros here are defined the only functionality remaining will be CRC-32 and adler-32. */
129
130 /* Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. */
131 /*#define MINIZ_NO_STDIO */
132
133 /* If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or */
134 /* get/set file times, and the C run-time funcs that get/set times won't be called. */
135 /* The current downside is the times written to your archives will be from 1979. */
136 /*#define MINIZ_NO_TIME */
137
138 /* Define MINIZ_NO_DEFLATE_APIS to disable all compression API's. */
139 /*#define MINIZ_NO_DEFLATE_APIS */
140
141 /* Define MINIZ_NO_INFLATE_APIS to disable all decompression API's. */
142 /*#define MINIZ_NO_INFLATE_APIS */
143
144 /* Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. */
145 /*#define MINIZ_NO_ARCHIVE_APIS */
146
147 /* Define MINIZ_NO_ARCHIVE_WRITING_APIS to disable all writing related ZIP archive API's. */
148 /*#define MINIZ_NO_ARCHIVE_WRITING_APIS */
149
150 /* Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. */
151 /*#define MINIZ_NO_ZLIB_APIS */
152
153 /* Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. */
154 /*#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES */
155
156 /* Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc.
157 Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc
158 callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user
159 functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. */
160 /*#define MINIZ_NO_MALLOC */
161
162 #ifdef MINIZ_NO_INFLATE_APIS
163 # define MINIZ_NO_ARCHIVE_APIS
164 #endif
165
166 #ifdef MINIZ_NO_DEFLATE_APIS
167 # define MINIZ_NO_ARCHIVE_WRITING_APIS
168 #endif
169
170 #if defined(__TINYC__) && (defined(__linux) || defined(__linux__))
171 /* TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux */
172 # define MINIZ_NO_TIME
173 #endif
174
175 #include <stddef.h>
176
177 #if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS)
178 # include <time.h>
179 #endif
180
181 #if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__)
182 /* MINIZ_X86_OR_X64_CPU is only used to help set the below macros. */
183 # define MINIZ_X86_OR_X64_CPU 1
184 #else
185 # define MINIZ_X86_OR_X64_CPU 0
186 #endif
187
188 /* Set MINIZ_LITTLE_ENDIAN only if not set */
189 #if !defined(MINIZ_LITTLE_ENDIAN)
190 # if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__)
191
192 # if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
193 /* Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. */
194 # define MINIZ_LITTLE_ENDIAN 1
195 # else
196 # define MINIZ_LITTLE_ENDIAN 0
197 # endif
198
199 # else
200
201 # if MINIZ_X86_OR_X64_CPU
202 # define MINIZ_LITTLE_ENDIAN 1
203 # else
204 # define MINIZ_LITTLE_ENDIAN 0
205 # endif
206
207 # endif
208 #endif
209
210 /* Using unaligned loads and stores causes errors when using UBSan */
211 #if defined(__has_feature)
212 # if __has_feature(undefined_behavior_sanitizer)
213 # define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
214 # endif
215 #endif
216
217 /* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES only if not set */
218 #if !defined(MINIZ_USE_UNALIGNED_LOADS_AND_STORES)
219 # if MINIZ_X86_OR_X64_CPU
220 /* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. */
221 # define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
222 # define MINIZ_UNALIGNED_USE_MEMCPY
223 # else
224 # define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
225 # endif
226 #endif
227
228 #if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__)
229 /* 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). */
230 # define MINIZ_HAS_64BIT_REGISTERS 1
231 #else
232 # define MINIZ_HAS_64BIT_REGISTERS 0
233 #endif
234
235 #ifdef __cplusplus
236 extern "C"
237 {
238 #endif
239
240 /* ------------------- zlib-style API Definitions. */
241
242 /* 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! */
243 typedef unsigned long mz_ulong;
244
245 /* 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. */
246 MINIZ_EXPORT void mz_free(void *p);
247
248 #define MZ_ADLER32_INIT (1)
249 /* mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL. */
250 MINIZ_EXPORT mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len);
251
252 #define MZ_CRC32_INIT (0)
253 /* mz_crc32() returns the initial CRC-32 value to use when called with ptr==NULL. */
254 MINIZ_EXPORT mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len);
255
256 /* Compression strategies. */
257 enum
258 {
259 MZ_DEFAULT_STRATEGY = 0,
260 MZ_FILTERED = 1,
261 MZ_HUFFMAN_ONLY = 2,
262 MZ_RLE = 3,
263 MZ_FIXED = 4
264 };
265
266 /* Method */
267 #define MZ_DEFLATED 8
268
269 /* Heap allocation callbacks.
270 Note that mz_alloc_func parameter types purposely differ from zlib's: items/size is size_t, not unsigned long. */
271 typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size);
272 typedef void (*mz_free_func)(void *opaque, void *address);
273 typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size);
274
275 /* 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. */
276 enum
277 {
278 MZ_NO_COMPRESSION = 0,
279 MZ_BEST_SPEED = 1,
280 MZ_BEST_COMPRESSION = 9,
281 MZ_UBER_COMPRESSION = 10,
282 MZ_DEFAULT_LEVEL = 6,
283 MZ_DEFAULT_COMPRESSION = -1
284 };
285
286 #define MZ_VERSION "11.3.0"
287 #define MZ_VERNUM 0xB300
288 #define MZ_VER_MAJOR 11
289 #define MZ_VER_MINOR 3
290 #define MZ_VER_REVISION 0
291 #define MZ_VER_SUBREVISION 0
292
293 #ifndef MINIZ_NO_ZLIB_APIS
294
295 /* 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). */
296 enum
297 {
298 MZ_NO_FLUSH = 0,
299 MZ_PARTIAL_FLUSH = 1,
300 MZ_SYNC_FLUSH = 2,
301 MZ_FULL_FLUSH = 3,
302 MZ_FINISH = 4,
303 MZ_BLOCK = 5
304 };
305
306 /* Return status codes. MZ_PARAM_ERROR is non-standard. */
307 enum
308 {
309 MZ_OK = 0,
310 MZ_STREAM_END = 1,
311 MZ_NEED_DICT = 2,
312 MZ_ERRNO = -1,
313 MZ_STREAM_ERROR = -2,
314 MZ_DATA_ERROR = -3,
315 MZ_MEM_ERROR = -4,
316 MZ_BUF_ERROR = -5,
317 MZ_VERSION_ERROR = -6,
318 MZ_PARAM_ERROR = -10000
319 };
320
321 /* Window bits */
322 # define MZ_DEFAULT_WINDOW_BITS 15
323
324 struct mz_internal_state;
325
326 /* Compression/decompression stream struct. */
327 typedef struct mz_stream_s
328 {
329 const unsigned char *next_in; /* pointer to next byte to read */
330 unsigned int avail_in; /* number of bytes available at next_in */
331 mz_ulong total_in; /* total number of bytes consumed so far */
332
333 unsigned char *next_out; /* pointer to next byte to write */
334 unsigned int avail_out; /* number of bytes that can be written to next_out */
335 mz_ulong total_out; /* total number of bytes produced so far */
336
337 char *msg; /* error msg (unused) */
338 struct mz_internal_state *state; /* internal state, allocated by zalloc/zfree */
339
340 mz_alloc_func zalloc; /* optional heap allocation function (defaults to malloc) */
341 mz_free_func zfree; /* optional heap free function (defaults to free) */
342 void *opaque; /* heap alloc function user pointer */
343
344 int data_type; /* data_type (unused) */
345 mz_ulong adler; /* adler32 of the source or uncompressed data */
346 mz_ulong reserved; /* not used */
347 } mz_stream;
348
349 typedef mz_stream *mz_streamp;
350
351 /* Returns the version string of miniz.c. */
352 MINIZ_EXPORT const char *mz_version(void);
353
354 # ifndef MINIZ_NO_DEFLATE_APIS
355
356 /* mz_deflateInit() initializes a compressor with default options: */
357 /* Parameters: */
358 /* pStream must point to an initialized mz_stream struct. */
359 /* level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. */
360 /* level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. */
361 /* (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) */
362 /* Return values: */
363 /* MZ_OK on success. */
364 /* MZ_STREAM_ERROR if the stream is bogus. */
365 /* MZ_PARAM_ERROR if the input parameters are bogus. */
366 /* MZ_MEM_ERROR on out of memory. */
367 MINIZ_EXPORT int mz_deflateInit(mz_streamp pStream, int level);
368
369 /* mz_deflateInit2() is like mz_deflate(), except with more control: */
370 /* Additional parameters: */
371 /* method must be MZ_DEFLATED */
372 /* 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) */
373 /* mem_level must be between [1, 9] (it's checked but ignored by miniz.c) */
374 MINIZ_EXPORT int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy);
375
376 /* Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). */
377 MINIZ_EXPORT int mz_deflateReset(mz_streamp pStream);
378
379 /* mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. */
380 /* Parameters: */
381 /* 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. */
382 /* flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. */
383 /* Return values: */
384 /* 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). */
385 /* 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. */
386 /* MZ_STREAM_ERROR if the stream is bogus. */
387 /* MZ_PARAM_ERROR if one of the parameters is invalid. */
388 /* 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.) */
389 MINIZ_EXPORT int mz_deflate(mz_streamp pStream, int flush);
390
391 /* mz_deflateEnd() deinitializes a compressor: */
392 /* Return values: */
393 /* MZ_OK on success. */
394 /* MZ_STREAM_ERROR if the stream is bogus. */
395 MINIZ_EXPORT int mz_deflateEnd(mz_streamp pStream);
396
397 /* 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. */
398 MINIZ_EXPORT mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len);
399
400 /* Single-call compression functions mz_compress() and mz_compress2(): */
401 /* Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. */
402 MINIZ_EXPORT int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len);
403 MINIZ_EXPORT int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level);
404
405 /* mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling mz_compress(). */
406 MINIZ_EXPORT mz_ulong mz_compressBound(mz_ulong source_len);
407
408 # endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/
409
410 # ifndef MINIZ_NO_INFLATE_APIS
411
412 /* Initializes a decompressor. */
413 MINIZ_EXPORT int mz_inflateInit(mz_streamp pStream);
414
415 /* 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: */
416 /* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */
417 MINIZ_EXPORT int mz_inflateInit2(mz_streamp pStream, int window_bits);
418
419 /* Quickly resets a compressor without having to reallocate anything. Same as calling mz_inflateEnd() followed by mz_inflateInit()/mz_inflateInit2(). */
420 MINIZ_EXPORT int mz_inflateReset(mz_streamp pStream);
421
422 /* 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. */
423 /* Parameters: */
424 /* 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. */
425 /* flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. */
426 /* 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). */
427 /* 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. */
428 /* Return values: */
429 /* 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. */
430 /* 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. */
431 /* MZ_STREAM_ERROR if the stream is bogus. */
432 /* MZ_DATA_ERROR if the deflate stream is invalid. */
433 /* MZ_PARAM_ERROR if one of the parameters is invalid. */
434 /* 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 */
435 /* with more input data, or with more room in the output buffer (except when using single call decompression, described above). */
436 MINIZ_EXPORT int mz_inflate(mz_streamp pStream, int flush);
437
438 /* Deinitializes a decompressor. */
439 MINIZ_EXPORT int mz_inflateEnd(mz_streamp pStream);
440
441 /* Single-call decompression. */
442 /* Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. */
443 MINIZ_EXPORT int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len);
444 MINIZ_EXPORT int mz_uncompress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong *pSource_len);
445 # endif /*#ifndef MINIZ_NO_INFLATE_APIS*/
446
447 /* Returns a string description of the specified error code, or NULL if the error code is invalid. */
448 MINIZ_EXPORT const char *mz_error(int err);
449
450 /* 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. */
451 /* Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. */
452 # ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES
453 typedef unsigned char Byte;
454 typedef unsigned int uInt;
455 typedef mz_ulong uLong;
456 typedef Byte Bytef;
457 typedef uInt uIntf;
458 typedef char charf;
459 typedef int intf;
460 typedef void *voidpf;
461 typedef uLong uLongf;
462 typedef void *voidp;
463 typedef void *const voidpc;
464 # define Z_NULL 0
465 # define Z_NO_FLUSH MZ_NO_FLUSH
466 # define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH
467 # define Z_SYNC_FLUSH MZ_SYNC_FLUSH
468 # define Z_FULL_FLUSH MZ_FULL_FLUSH
469 # define Z_FINISH MZ_FINISH
470 # define Z_BLOCK MZ_BLOCK
471 # define Z_OK MZ_OK
472 # define Z_STREAM_END MZ_STREAM_END
473 # define Z_NEED_DICT MZ_NEED_DICT
474 # define Z_ERRNO MZ_ERRNO
475 # define Z_STREAM_ERROR MZ_STREAM_ERROR
476 # define Z_DATA_ERROR MZ_DATA_ERROR
477 # define Z_MEM_ERROR MZ_MEM_ERROR
478 # define Z_BUF_ERROR MZ_BUF_ERROR
479 # define Z_VERSION_ERROR MZ_VERSION_ERROR
480 # define Z_PARAM_ERROR MZ_PARAM_ERROR
481 # define Z_NO_COMPRESSION MZ_NO_COMPRESSION
482 # define Z_BEST_SPEED MZ_BEST_SPEED
483 # define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION
484 # define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION
485 # define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY
486 # define Z_FILTERED MZ_FILTERED
487 # define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY
488 # define Z_RLE MZ_RLE
489 # define Z_FIXED MZ_FIXED
490 # define Z_DEFLATED MZ_DEFLATED
491 # define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS
492 /* See mz_alloc_func */
493 typedef void *(*alloc_func)(void *opaque, size_t items, size_t size);
494 /* See mz_free_func */
495 typedef void (*free_func)(void *opaque, void *address);
496
497 # define internal_state mz_internal_state
498 # define z_stream mz_stream
499
500 # ifndef MINIZ_NO_DEFLATE_APIS
501 /* Compatiblity with zlib API. See called functions for documentation */
502 static int deflateInit(mz_streamp pStream, int level)
/* ![[next]](../icons/right.png)
![[first]](../icons/n_first.png)
![[top]](../icons/top.png)
*/
503 {
504 return mz_deflateInit(pStream, level);
505 }
506 static int deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy)
/* ![[previous]](../icons/left.png)
*/
507 {
508 return mz_deflateInit2(pStream, level, method, window_bits, mem_level, strategy);
509 }
510 static int deflateReset(mz_streamp pStream)
/* */
511 {
512 return mz_deflateReset(pStream);
513 }
514 static int deflate(mz_streamp pStream, int flush)
/* */
515 {
516 return mz_deflate(pStream, flush);
517 }
518 static int deflateEnd(mz_streamp pStream)
/* */
519 {
520 return mz_deflateEnd(pStream);
521 }
522 static mz_ulong deflateBound(mz_streamp pStream, mz_ulong source_len)
/* */
523 {
524 return mz_deflateBound(pStream, source_len);
525 }
526 static int compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len)
/* */
527 {
528 return mz_compress(pDest, pDest_len, pSource, source_len);
529 }
530 static int compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level)
/* */
531 {
532 return mz_compress2(pDest, pDest_len, pSource, source_len, level);
533 }
534 static mz_ulong compressBound(mz_ulong source_len)
/* */
535 {
536 return mz_compressBound(source_len);
537 }
538 # endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/
539
540 # ifndef MINIZ_NO_INFLATE_APIS
541 /* Compatiblity with zlib API. See called functions for documentation */
542 static int inflateInit(mz_streamp pStream)
/* */
543 {
544 return mz_inflateInit(pStream);
545 }
546
547 static int inflateInit2(mz_streamp pStream, int window_bits)
/* */
548 {
549 return mz_inflateInit2(pStream, window_bits);
550 }
551
552 static int inflateReset(mz_streamp pStream)
/* */
553 {
554 return mz_inflateReset(pStream);
555 }
556
557 static int inflate(mz_streamp pStream, int flush)
/* */
558 {
559 return mz_inflate(pStream, flush);
560 }
561
562 static int inflateEnd(mz_streamp pStream)
/* */
563 {
564 return mz_inflateEnd(pStream);
565 }
566
567 static int uncompress(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong source_len)
/* */
568 {
569 return mz_uncompress(pDest, pDest_len, pSource, source_len);
570 }
571
572 static int uncompress2(unsigned char* pDest, mz_ulong* pDest_len, const unsigned char* pSource, mz_ulong* pSource_len)
/* */
573 {
574 return mz_uncompress2(pDest, pDest_len, pSource, pSource_len);
575 }
576 # endif /*#ifndef MINIZ_NO_INFLATE_APIS*/
577
578 static mz_ulong crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len)
/* */
579 {
580 return mz_crc32(crc, ptr, buf_len);
581 }
582
583 static mz_ulong adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len)
/* */
584 {
585 return mz_adler32(adler, ptr, buf_len);
586 }
587
588 # define MAX_WBITS 15
589 # define MAX_MEM_LEVEL 9
590 static const char* zError(int err)
/* ![[last]](../icons/n_last.png)
*/
591 {
592 return mz_error(err);
593 }
594 # define ZLIB_VERSION MZ_VERSION
595 # define ZLIB_VERNUM MZ_VERNUM
596 # define ZLIB_VER_MAJOR MZ_VER_MAJOR
597 # define ZLIB_VER_MINOR MZ_VER_MINOR
598 # define ZLIB_VER_REVISION MZ_VER_REVISION
599 # define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION
600
601 # define zlibVersion mz_version
602 # define zlib_version mz_version()
603 # endif /* #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES */
604
605 #endif /* MINIZ_NO_ZLIB_APIS */
606
607 #ifdef __cplusplus
608 }
609 #endif
610
611 #pragma once
612 #include <assert.h>
613 #include <stdint.h>
614 #include <stdlib.h>
615 #include <string.h>
616
617 /* ------------------- Types and macros */
618 typedef unsigned char mz_uint8;
619 typedef int16_t mz_int16;
620 typedef uint16_t mz_uint16;
621 typedef uint32_t mz_uint32;
622 typedef uint32_t mz_uint;
623 typedef int64_t mz_int64;
624 typedef uint64_t mz_uint64;
625 typedef int mz_bool;
626
627 #define MZ_FALSE (0)
628 #define MZ_TRUE (1)
629
630 /* Works around MSVC's spammy "warning C4127: conditional expression is constant" message. */
631 #ifdef _MSC_VER
632 # define MZ_MACRO_END while (0, 0)
633 #else
634 # define MZ_MACRO_END while (0)
635 #endif
636
637 #ifdef MINIZ_NO_STDIO
638 # define MZ_FILE void *
639 #else
640 # include <stdio.h>
641 # define MZ_FILE FILE
642 #endif /* #ifdef MINIZ_NO_STDIO */
643
644 #ifdef MINIZ_NO_TIME
645 typedef struct mz_dummy_time_t_tag
646 {
647 mz_uint32 m_dummy1;
648 mz_uint32 m_dummy2;
649 } mz_dummy_time_t;
650 # define MZ_TIME_T mz_dummy_time_t
651 #else
652 # define MZ_TIME_T time_t
653 #endif
654
655 #define MZ_ASSERT(x) assert(x)
656
657 #ifdef MINIZ_NO_MALLOC
658 # define MZ_MALLOC(x) NULL
659 # define MZ_FREE(x) (void)x, ((void)0)
660 # define MZ_REALLOC(p, x) NULL
661 #else
662 # define MZ_MALLOC(x) malloc(x)
663 # define MZ_FREE(x) free(x)
664 # define MZ_REALLOC(p, x) realloc(p, x)
665 #endif
666
667 #define MZ_MAX(a, b) (((a) > (b)) ? (a) : (b))
668 #define MZ_MIN(a, b) (((a) < (b)) ? (a) : (b))
669 #define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj))
670 #define MZ_CLEAR_ARR(obj) memset((obj), 0, sizeof(obj))
671 #define MZ_CLEAR_PTR(obj) memset((obj), 0, sizeof(*obj))
672
673 #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
674 # define MZ_READ_LE16(p) *((const mz_uint16 *)(p))
675 # define MZ_READ_LE32(p) *((const mz_uint32 *)(p))
676 #else
677 # define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U))
678 # 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))
679 #endif
680
681 #define MZ_READ_LE64(p) (((mz_uint64)MZ_READ_LE32(p)) | (((mz_uint64)MZ_READ_LE32((const mz_uint8 *)(p) + sizeof(mz_uint32))) << 32U))
682
683 #ifdef _MSC_VER
684 # define MZ_FORCEINLINE __forceinline
685 #elif defined(__GNUC__)
686 # define MZ_FORCEINLINE __inline__ __attribute__((__always_inline__))
687 #else
688 # define MZ_FORCEINLINE inline
689 #endif
690
691 #ifdef __cplusplus
692 extern "C"
693 {
694 #endif
695
696 extern MINIZ_EXPORT void *miniz_def_alloc_func(void *opaque, size_t items, size_t size);
697 extern MINIZ_EXPORT void miniz_def_free_func(void *opaque, void *address);
698 extern MINIZ_EXPORT void *miniz_def_realloc_func(void *opaque, void *address, size_t items, size_t size);
699
700 #define MZ_UINT16_MAX (0xFFFFU)
701 #define MZ_UINT32_MAX (0xFFFFFFFFU)
702
703 #ifdef __cplusplus
704 }
705 #endif
706 #pragma once
707
708 #ifndef MINIZ_NO_DEFLATE_APIS
709
710 # ifdef __cplusplus
711 extern "C"
712 {
713 # endif
714 /* ------------------- Low-level Compression API Definitions */
715
716 /* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently). */
717 # ifndef TDEFL_LESS_MEMORY
718 # define TDEFL_LESS_MEMORY 0
719 # endif
720
721 /* tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): */
722 /* 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). */
723 enum
724 {
725 TDEFL_HUFFMAN_ONLY = 0,
726 TDEFL_DEFAULT_MAX_PROBES = 128,
727 TDEFL_MAX_PROBES_MASK = 0xFFF
728 };
729
730 /* 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. */
731 /* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). */
732 /* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. */
733 /* 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). */
734 /* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) */
735 /* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */
736 /* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. */
737 /* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. */
738 /* The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). */
739 enum
740 {
741 TDEFL_WRITE_ZLIB_HEADER = 0x01000,
742 TDEFL_COMPUTE_ADLER32 = 0x02000,
743 TDEFL_GREEDY_PARSING_FLAG = 0x04000,
744 TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000,
745 TDEFL_RLE_MATCHES = 0x10000,
746 TDEFL_FILTER_MATCHES = 0x20000,
747 TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000,
748 TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000
749 };
750
751 /* High level compression functions: */
752 /* tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). */
753 /* On entry: */
754 /* pSrc_buf, src_buf_len: Pointer and size of source block to compress. */
755 /* flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. */
756 /* On return: */
757 /* Function returns a pointer to the compressed data, or NULL on failure. */
758 /* *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. */
759 /* The caller must free() the returned block when it's no longer needed. */
760 MINIZ_EXPORT void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags);
761
762 /* tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. */
763 /* Returns 0 on failure. */
764 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);
765
766 /* Compresses an image to a compressed PNG file in memory. */
767 /* On entry: */
768 /* pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. */
769 /* The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. */
770 /* 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 */
771 /* If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). */
772 /* On return: */
773 /* Function returns a pointer to the compressed data, or NULL on failure. */
774 /* *pLen_out will be set to the size of the PNG image file. */
775 /* The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. */
776 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);
777 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);
778
779 /* Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. */
780 typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser);
781
782 /* tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. */
783 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);
784
785 enum
786 {
787 TDEFL_MAX_HUFF_TABLES = 3,
788 TDEFL_MAX_HUFF_SYMBOLS_0 = 288,
789 TDEFL_MAX_HUFF_SYMBOLS_1 = 32,
790 TDEFL_MAX_HUFF_SYMBOLS_2 = 19,
791 TDEFL_LZ_DICT_SIZE = 32768,
792 TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1,
793 TDEFL_MIN_MATCH_LEN = 3,
794 TDEFL_MAX_MATCH_LEN = 258
795 };
796
797 /* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). */
798 # if TDEFL_LESS_MEMORY
799 enum
800 {
801 TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024,
802 TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10,
803 TDEFL_MAX_HUFF_SYMBOLS = 288,
804 TDEFL_LZ_HASH_BITS = 12,
805 TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,
806 TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,
807 TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS
808 };
809 # else
810 enum
811 {
812 TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024,
813 TDEFL_OUT_BUF_SIZE = (mz_uint)((TDEFL_LZ_CODE_BUF_SIZE * 13) / 10),
814 TDEFL_MAX_HUFF_SYMBOLS = 288,
815 TDEFL_LZ_HASH_BITS = 15,
816 TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,
817 TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,
818 TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS
819 };
820 # endif
821
822 /* 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. */
823 typedef enum
824 {
825 TDEFL_STATUS_BAD_PARAM = -2,
826 TDEFL_STATUS_PUT_BUF_FAILED = -1,
827 TDEFL_STATUS_OKAY = 0,
828 TDEFL_STATUS_DONE = 1
829 } tdefl_status;
830
831 /* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */
832 typedef enum
833 {
834 TDEFL_NO_FLUSH = 0,
835 TDEFL_SYNC_FLUSH = 2,
836 TDEFL_FULL_FLUSH = 3,
837 TDEFL_FINISH = 4
838 } tdefl_flush;
839
840 /* tdefl's compression state structure. */
841 typedef struct
842 {
843 tdefl_put_buf_func_ptr m_pPut_buf_func;
844 void *m_pPut_buf_user;
845 mz_uint m_flags, m_max_probes[2];
846 int m_greedy_parsing;
847 mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size;
848 mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end;
849 mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer;
850 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;
851 tdefl_status m_prev_return_status;
852 const void *m_pIn_buf;
853 void *m_pOut_buf;
854 size_t *m_pIn_buf_size, *m_pOut_buf_size;
855 tdefl_flush m_flush;
856 const mz_uint8 *m_pSrc;
857 size_t m_src_buf_left, m_out_buf_ofs;
858 mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1];
859 mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
860 mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
861 mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
862 mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE];
863 mz_uint16 m_next[TDEFL_LZ_DICT_SIZE];
864 mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE];
865 mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE];
866 } tdefl_compressor;
867
868 /* Initializes the compressor. */
869 /* There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. */
870 /* 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. */
871 /* If pBut_buf_func is NULL the user should always call the tdefl_compress() API. */
872 /* flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) */
873 MINIZ_EXPORT tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);
874
875 /* 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. */
876 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);
877
878 /* tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. */
879 /* tdefl_compress_buffer() always consumes the entire input buffer. */
880 MINIZ_EXPORT tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush);
881
882 MINIZ_EXPORT tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d);
883 MINIZ_EXPORT mz_uint32 tdefl_get_adler32(tdefl_compressor *d);
884
885 /* Create tdefl_compress() flags given zlib-style compression parameters. */
886 /* level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) */
887 /* window_bits may be -15 (raw deflate) or 15 (zlib) */
888 /* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */
889 MINIZ_EXPORT mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);
890
891 # ifndef MINIZ_NO_MALLOC
892 /* Allocate the tdefl_compressor structure in C so that */
893 /* non-C language bindings to tdefl_ API don't need to worry about */
894 /* structure size and allocation mechanism. */
895 MINIZ_EXPORT tdefl_compressor *tdefl_compressor_alloc(void);
896 MINIZ_EXPORT void tdefl_compressor_free(tdefl_compressor *pComp);
897 # endif
898
899 # ifdef __cplusplus
900 }
901 # endif
902
903 #endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/
904 #pragma once
905
906 /* ------------------- Low-level Decompression API Definitions */
907
908 #ifndef MINIZ_NO_INFLATE_APIS
909
910 # ifdef __cplusplus
911 extern "C"
912 {
913 # endif
914 /* Decompression flags used by tinfl_decompress(). */
915 /* 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. */
916 /* 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. */
917 /* 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). */
918 /* TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. */
919 enum
920 {
921 TINFL_FLAG_PARSE_ZLIB_HEADER = 1,
922 TINFL_FLAG_HAS_MORE_INPUT = 2,
923 TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4,
924 TINFL_FLAG_COMPUTE_ADLER32 = 8
925 };
926
927 /* High level decompression functions: */
928 /* tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). */
929 /* On entry: */
930 /* pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data to decompress. */
931 /* On return: */
932 /* Function returns a pointer to the decompressed data, or NULL on failure. */
933 /* *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. */
934 /* The caller must call mz_free() on the returned block when it's no longer needed. */
935 MINIZ_EXPORT void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags);
936
937 /* tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. */
938 /* Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. */
939 # define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1))
940 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);
941
942 /* 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. */
943 /* Returns 1 on success or 0 on failure. */
944 typedef int (*tinfl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser);
945 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);
946
947 struct tinfl_decompressor_tag;
948 typedef struct tinfl_decompressor_tag tinfl_decompressor;
949
950 # ifndef MINIZ_NO_MALLOC
951 /* Allocate the tinfl_decompressor structure in C so that */
952 /* non-C language bindings to tinfl_ API don't need to worry about */
953 /* structure size and allocation mechanism. */
954 MINIZ_EXPORT tinfl_decompressor *tinfl_decompressor_alloc(void);
955 MINIZ_EXPORT void tinfl_decompressor_free(tinfl_decompressor *pDecomp);
956 # endif
957
958 /* Max size of LZ dictionary. */
959 # define TINFL_LZ_DICT_SIZE 32768
960
961 /* Return status. */
962 typedef enum
963 {
964 /* 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 */
965 /* 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). */
966 /* If you call it again with no input you'll just get TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS again. */
967 TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS = -4,
968
969 /* 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.) */
970 TINFL_STATUS_BAD_PARAM = -3,
971
972 /* 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. */
973 TINFL_STATUS_ADLER32_MISMATCH = -2,
974
975 /* 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. */
976 TINFL_STATUS_FAILED = -1,
977
978 /* Any status code less than TINFL_STATUS_DONE must indicate a failure. */
979
980 /* 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 */
981 /* 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. */
982 TINFL_STATUS_DONE = 0,
983
984 /* 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 */
985 /* 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 */
986 /* proceed, so be sure to properly set the TINFL_FLAG_HAS_MORE_INPUT flag. */
987 TINFL_STATUS_NEEDS_MORE_INPUT = 1,
988
989 /* 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. */
990 /* 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 */
991 /* (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 */
992 /* so I may need to add some code to address this. */
993 TINFL_STATUS_HAS_MORE_OUTPUT = 2
994 } tinfl_status;
995
996 /* Initializes the decompressor to its initial state. */
997 # define tinfl_init(r) \
998 do \
999 { \
1000 (r)->m_state = 0; \
1001 } \
1002 MZ_MACRO_END
1003 # define tinfl_get_adler32(r) (r)->m_check_adler32
1004
1005 /* 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. */
1006 /* 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. */
1007 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);
1008
1009 /* Internal/private bits follow. */
1010 enum
1011 {
1012 TINFL_MAX_HUFF_TABLES = 3,
1013 TINFL_MAX_HUFF_SYMBOLS_0 = 288,
1014 TINFL_MAX_HUFF_SYMBOLS_1 = 32,
1015 TINFL_MAX_HUFF_SYMBOLS_2 = 19,
1016 TINFL_FAST_LOOKUP_BITS = 10,
1017 TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS
1018 };
1019
1020 # if MINIZ_HAS_64BIT_REGISTERS
1021 # define TINFL_USE_64BIT_BITBUF 1
1022 # else
1023 # define TINFL_USE_64BIT_BITBUF 0
1024 # endif
1025
1026 # if TINFL_USE_64BIT_BITBUF
1027 typedef mz_uint64 tinfl_bit_buf_t;
1028 # define TINFL_BITBUF_SIZE (64)
1029 # else
1030 typedef mz_uint32 tinfl_bit_buf_t;
1031 # define TINFL_BITBUF_SIZE (32)
1032 # endif
1033
1034 struct tinfl_decompressor_tag
1035 {
1036 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];
1037 tinfl_bit_buf_t m_bit_buf;
1038 size_t m_dist_from_out_buf_start;
1039 mz_int16 m_look_up[TINFL_MAX_HUFF_TABLES][TINFL_FAST_LOOKUP_SIZE];
1040 mz_int16 m_tree_0[TINFL_MAX_HUFF_SYMBOLS_0 * 2];
1041 mz_int16 m_tree_1[TINFL_MAX_HUFF_SYMBOLS_1 * 2];
1042 mz_int16 m_tree_2[TINFL_MAX_HUFF_SYMBOLS_2 * 2];
1043 mz_uint8 m_code_size_0[TINFL_MAX_HUFF_SYMBOLS_0];
1044 mz_uint8 m_code_size_1[TINFL_MAX_HUFF_SYMBOLS_1];
1045 mz_uint8 m_code_size_2[TINFL_MAX_HUFF_SYMBOLS_2];
1046 mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137];
1047 };
1048
1049 # ifdef __cplusplus
1050 }
1051 # endif
1052
1053 #endif /*#ifndef MINIZ_NO_INFLATE_APIS*/
1054
1055 #pragma once
1056
1057 /* ------------------- ZIP archive reading/writing */
1058
1059 #ifndef MINIZ_NO_ARCHIVE_APIS
1060
1061 # ifdef __cplusplus
1062 extern "C"
1063 {
1064 # endif
1065
1066 enum
1067 {
1068 /* Note: These enums can be reduced as needed to save memory or stack space - they are pretty conservative. */
1069 MZ_ZIP_MAX_IO_BUF_SIZE = 64 * 1024,
1070 MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 512,
1071 MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 512
1072 };
1073
1074 typedef struct
1075 {
1076 /* Central directory file index. */
1077 mz_uint32 m_file_index;
1078
1079 /* 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. */
1080 mz_uint64 m_central_dir_ofs;
1081
1082 /* These fields are copied directly from the zip's central dir. */
1083 mz_uint16 m_version_made_by;
1084 mz_uint16 m_version_needed;
1085 mz_uint16 m_bit_flag;
1086 mz_uint16 m_method;
1087
1088 /* CRC-32 of uncompressed data. */
1089 mz_uint32 m_crc32;
1090
1091 /* File's compressed size. */
1092 mz_uint64 m_comp_size;
1093
1094 /* 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. */
1095 mz_uint64 m_uncomp_size;
1096
1097 /* Zip internal and external file attributes. */
1098 mz_uint16 m_internal_attr;
1099 mz_uint32 m_external_attr;
1100
1101 /* Entry's local header file offset in bytes. */
1102 mz_uint64 m_local_header_ofs;
1103
1104 /* Size of comment in bytes. */
1105 mz_uint32 m_comment_size;
1106
1107 /* MZ_TRUE if the entry appears to be a directory. */
1108 mz_bool m_is_directory;
1109
1110 /* MZ_TRUE if the entry uses encryption/strong encryption (which miniz_zip doesn't support) */
1111 mz_bool m_is_encrypted;
1112
1113 /* MZ_TRUE if the file is not encrypted, a patch file, and if it uses a compression method we support. */
1114 mz_bool m_is_supported;
1115
1116 /* Filename. If string ends in '/' it's a subdirectory entry. */
1117 /* Guaranteed to be zero terminated, may be truncated to fit. */
1118 char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE];
1119
1120 /* Comment field. */
1121 /* Guaranteed to be zero terminated, may be truncated to fit. */
1122 char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE];
1123
1124 # ifdef MINIZ_NO_TIME
1125 MZ_TIME_T m_padding;
1126 # else
1127 MZ_TIME_T m_time;
1128 # endif
1129 } mz_zip_archive_file_stat;
1130
1131 typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n);
1132 typedef size_t (*mz_file_write_func)(void *pOpaque, mz_uint64 file_ofs, const void *pBuf, size_t n);
1133 typedef mz_bool (*mz_file_needs_keepalive)(void *pOpaque);
1134
1135 struct mz_zip_internal_state_tag;
1136 typedef struct mz_zip_internal_state_tag mz_zip_internal_state;
1137
1138 typedef enum
1139 {
1140 MZ_ZIP_MODE_INVALID = 0,
1141 MZ_ZIP_MODE_READING = 1,
1142 MZ_ZIP_MODE_WRITING = 2,
1143 MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3
1144 } mz_zip_mode;
1145
1146 typedef enum
1147 {
1148 MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100,
1149 MZ_ZIP_FLAG_IGNORE_PATH = 0x0200,
1150 MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400,
1151 MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800,
1152 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) */
1153 MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY = 0x2000, /* validate the local headers, but don't decompress the entire file and check the crc32 */
1154 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 */
1155 MZ_ZIP_FLAG_WRITE_ALLOW_READING = 0x8000,
1156 MZ_ZIP_FLAG_ASCII_FILENAME = 0x10000,
1157 /*After adding a compressed file, seek back
1158 to local file header and set the correct sizes*/
1159 MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE = 0x20000,
1160 MZ_ZIP_FLAG_READ_ALLOW_WRITING = 0x40000
1161 } mz_zip_flags;
1162
1163 typedef enum
1164 {
1165 MZ_ZIP_TYPE_INVALID = 0,
1166 MZ_ZIP_TYPE_USER,
1167 MZ_ZIP_TYPE_MEMORY,
1168 MZ_ZIP_TYPE_HEAP,
1169 MZ_ZIP_TYPE_FILE,
1170 MZ_ZIP_TYPE_CFILE,
1171 MZ_ZIP_TOTAL_TYPES
1172 } mz_zip_type;
1173
1174 /* miniz error codes. Be sure to update mz_zip_get_error_string() if you add or modify this enum. */
1175 typedef enum
1176 {
1177 MZ_ZIP_NO_ERROR = 0,
1178 MZ_ZIP_UNDEFINED_ERROR,
1179 MZ_ZIP_TOO_MANY_FILES,
1180 MZ_ZIP_FILE_TOO_LARGE,
1181 MZ_ZIP_UNSUPPORTED_METHOD,
1182 MZ_ZIP_UNSUPPORTED_ENCRYPTION,
1183 MZ_ZIP_UNSUPPORTED_FEATURE,
1184 MZ_ZIP_FAILED_FINDING_CENTRAL_DIR,
1185 MZ_ZIP_NOT_AN_ARCHIVE,
1186 MZ_ZIP_INVALID_HEADER_OR_CORRUPTED,
1187 MZ_ZIP_UNSUPPORTED_MULTIDISK,
1188 MZ_ZIP_DECOMPRESSION_FAILED,
1189 MZ_ZIP_COMPRESSION_FAILED,
1190 MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE,
1191 MZ_ZIP_CRC_CHECK_FAILED,
1192 MZ_ZIP_UNSUPPORTED_CDIR_SIZE,
1193 MZ_ZIP_ALLOC_FAILED,
1194 MZ_ZIP_FILE_OPEN_FAILED,
1195 MZ_ZIP_FILE_CREATE_FAILED,
1196 MZ_ZIP_FILE_WRITE_FAILED,
1197 MZ_ZIP_FILE_READ_FAILED,
1198 MZ_ZIP_FILE_CLOSE_FAILED,
1199 MZ_ZIP_FILE_SEEK_FAILED,
1200 MZ_ZIP_FILE_STAT_FAILED,
1201 MZ_ZIP_INVALID_PARAMETER,
1202 MZ_ZIP_INVALID_FILENAME,
1203 MZ_ZIP_BUF_TOO_SMALL,
1204 MZ_ZIP_INTERNAL_ERROR,
1205 MZ_ZIP_FILE_NOT_FOUND,
1206 MZ_ZIP_ARCHIVE_TOO_LARGE,
1207 MZ_ZIP_VALIDATION_FAILED,
1208 MZ_ZIP_WRITE_CALLBACK_FAILED,
1209 MZ_ZIP_TOTAL_ERRORS
1210 } mz_zip_error;
1211
1212 typedef struct
1213 {
1214 mz_uint64 m_archive_size;
1215 mz_uint64 m_central_directory_file_ofs;
1216
1217 /* We only support up to UINT32_MAX files in zip64 mode. */
1218 mz_uint32 m_total_files;
1219 mz_zip_mode m_zip_mode;
1220 mz_zip_type m_zip_type;
1221 mz_zip_error m_last_error;
1222
1223 mz_uint64 m_file_offset_alignment;
1224
1225 mz_alloc_func m_pAlloc;
1226 mz_free_func m_pFree;
1227 mz_realloc_func m_pRealloc;
1228 void *m_pAlloc_opaque;
1229
1230 mz_file_read_func m_pRead;
1231 mz_file_write_func m_pWrite;
1232 mz_file_needs_keepalive m_pNeeds_keepalive;
1233 void *m_pIO_opaque;
1234
1235 mz_zip_internal_state *m_pState;
1236
1237 } mz_zip_archive;
1238
1239 typedef struct
1240 {
1241 mz_zip_archive *pZip;
1242 mz_uint flags;
1243
1244 int status;
1245
1246 mz_uint64 read_buf_size, read_buf_ofs, read_buf_avail, comp_remaining, out_buf_ofs, cur_file_ofs;
1247 mz_zip_archive_file_stat file_stat;
1248 void *pRead_buf;
1249 void *pWrite_buf;
1250
1251 size_t out_blk_remain;
1252
1253 tinfl_decompressor inflator;
1254
1255 # ifdef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
1256 mz_uint padding;
1257 # else
1258 mz_uint file_crc32;
1259 # endif
1260
1261 } mz_zip_reader_extract_iter_state;
1262
1263 /* -------- ZIP reading */
1264
1265 /* Inits a ZIP archive reader. */
1266 /* These functions read and validate the archive's central directory. */
1267 MINIZ_EXPORT mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, mz_uint flags);
1268
1269 MINIZ_EXPORT mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, size_t size, mz_uint flags);
1270
1271 # ifndef MINIZ_NO_STDIO
1272 /* Read a archive from a disk file. */
1273 /* file_start_ofs is the file offset where the archive actually begins, or 0. */
1274 /* 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. */
1275 MINIZ_EXPORT mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint32 flags);
1276 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);
1277
1278 /* Read an archive from an already opened FILE, beginning at the current file position. */
1279 /* 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. */
1280 /* The FILE will NOT be closed when mz_zip_reader_end() is called. */
1281 MINIZ_EXPORT mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, mz_uint64 archive_size, mz_uint flags);
1282 # endif
1283
1284 /* Ends archive reading, freeing all allocations, and closing the input archive file if mz_zip_reader_init_file() was used. */
1285 MINIZ_EXPORT mz_bool mz_zip_reader_end(mz_zip_archive *pZip);
1286
1287 /* -------- ZIP reading or writing */
1288
1289 /* Clears a mz_zip_archive struct to all zeros. */
1290 /* Important: This must be done before passing the struct to any mz_zip functions. */
1291 MINIZ_EXPORT void mz_zip_zero_struct(mz_zip_archive *pZip);
1292
1293 MINIZ_EXPORT mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip);
1294 MINIZ_EXPORT mz_zip_type mz_zip_get_type(mz_zip_archive *pZip);
1295
1296 /* Returns the total number of files in the archive. */
1297 MINIZ_EXPORT mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip);
1298
1299 MINIZ_EXPORT mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip);
1300 MINIZ_EXPORT mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip);
1301 MINIZ_EXPORT MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip);
1302
1303 /* Reads n bytes of raw archive data, starting at file offset file_ofs, to pBuf. */
1304 MINIZ_EXPORT size_t mz_zip_read_archive_data(mz_zip_archive *pZip, mz_uint64 file_ofs, void *pBuf, size_t n);
1305
1306 /* All mz_zip funcs set the m_last_error field in the mz_zip_archive struct. These functions retrieve/manipulate this field. */
1307 /* Note that the m_last_error functionality is not thread safe. */
1308 MINIZ_EXPORT mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, mz_zip_error err_num);
1309 MINIZ_EXPORT mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip);
1310 MINIZ_EXPORT mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip);
1311 MINIZ_EXPORT mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip);
1312 MINIZ_EXPORT const char *mz_zip_get_error_string(mz_zip_error mz_err);
1313
1314 /* MZ_TRUE if the archive file entry is a directory entry. */
1315 MINIZ_EXPORT mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, mz_uint file_index);
1316
1317 /* MZ_TRUE if the file is encrypted/strong encrypted. */
1318 MINIZ_EXPORT mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, mz_uint file_index);
1319
1320 /* MZ_TRUE if the compression method is supported, and the file is not encrypted, and the file is not a compressed patch file. */
1321 MINIZ_EXPORT mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, mz_uint file_index);
1322
1323 /* Retrieves the filename of an archive file entry. */
1324 /* 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. */
1325 MINIZ_EXPORT mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, mz_uint file_index, char *pFilename, mz_uint filename_buf_size);
1326
1327 /* Attempts to locates a file in the archive's central directory. */
1328 /* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */
1329 /* Returns -1 if the file cannot be found. */
1330 MINIZ_EXPORT int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags);
1331 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);
1332
1333 /* Returns detailed information about an archive file entry. */
1334 MINIZ_EXPORT mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, mz_uint file_index, mz_zip_archive_file_stat *pStat);
1335
1336 /* MZ_TRUE if the file is in zip64 format. */
1337 /* 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. */
1338 MINIZ_EXPORT mz_bool mz_zip_is_zip64(mz_zip_archive *pZip);
1339
1340 /* Returns the total central directory size in bytes. */
1341 /* The current max supported size is <= MZ_UINT32_MAX. */
1342 MINIZ_EXPORT size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip);
1343
1344 /* Extracts a archive file to a memory buffer using no memory allocation. */
1345 /* There must be at least enough room on the stack to store the inflator's state (~34KB or so). */
1346 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);
1347 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);
1348
1349 /* Extracts a archive file to a memory buffer. */
1350 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);
1351 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);
1352
1353 /* Extracts a archive file to a dynamically allocated heap buffer. */
1354 /* The memory will be allocated via the mz_zip_archive's alloc/realloc functions. */
1355 /* Returns NULL and sets the last error on failure. */
1356 MINIZ_EXPORT void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index, size_t *pSize, mz_uint flags);
1357 MINIZ_EXPORT void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, const char *pFilename, size_t *pSize, mz_uint flags);
1358
1359 /* Extracts a archive file using a callback function to output the file's data. */
1360 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);
1361 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);
1362
1363 /* Extract a file iteratively */
1364 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);
1365 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);
1366 MINIZ_EXPORT size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state *pState, void *pvBuf, size_t buf_size);
1367 MINIZ_EXPORT mz_bool mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state *pState);
1368
1369 # ifndef MINIZ_NO_STDIO
1370 /* Extracts a archive file to a disk file and sets its last accessed and modified times. */
1371 /* This function only extracts files, not archive directory records. */
1372 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);
1373 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);
1374
1375 /* Extracts a archive file starting at the current position in the destination FILE stream. */
1376 MINIZ_EXPORT mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, mz_uint file_index, MZ_FILE *File, mz_uint flags);
1377 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);
1378 # endif
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391 /* 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. */
1392 /* It also validates that each file can be successfully uncompressed unless the MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY is specified. */
1393 MINIZ_EXPORT mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags);
1394
1395 /* Validates an entire archive by calling mz_zip_validate_file() on each file. */
1396 MINIZ_EXPORT mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags);
1397
1398 /* Misc utils/helpers, valid for ZIP reading or writing */
1399 MINIZ_EXPORT mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, mz_uint flags, mz_zip_error *pErr);
1400 # ifndef MINIZ_NO_STDIO
1401 MINIZ_EXPORT mz_bool mz_zip_validate_file_archive(const char *pFilename, mz_uint flags, mz_zip_error *pErr);
1402 # endif
1403
1404 /* Universal end function - calls either mz_zip_reader_end() or mz_zip_writer_end(). */
1405 MINIZ_EXPORT mz_bool mz_zip_end(mz_zip_archive *pZip);
1406
1407 /* -------- ZIP writing */
1408
1409 # ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
1410
1411 /* Inits a ZIP archive writer. */
1412 /*Set pZip->m_pWrite (and pZip->m_pIO_opaque) before calling mz_zip_writer_init or mz_zip_writer_init_v2*/
1413 /*The output is streamable, i.e. file_ofs in mz_file_write_func always increases only by n*/
1414 MINIZ_EXPORT mz_bool mz_zip_writer_init(mz_zip_archive *pZip, mz_uint64 existing_size);
1415 MINIZ_EXPORT mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, mz_uint64 existing_size, mz_uint flags);
1416
1417 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);
1418 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);
1419
1420 # ifndef MINIZ_NO_STDIO
1421 MINIZ_EXPORT mz_bool mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint64 size_to_reserve_at_beginning);
1422 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);
1423 MINIZ_EXPORT mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, mz_uint flags);
1424 # endif
1425
1426 /* Converts a ZIP archive reader object into a writer object, to allow efficient in-place file appends to occur on an existing archive. */
1427 /* 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. */
1428 /* 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). */
1429 /* Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's user provided m_pWrite function cannot be NULL. */
1430 /* Note: In-place archive modification is not recommended unless you know what you're doing, because if execution stops or something goes wrong before */
1431 /* the archive is finalized the file's central directory will be hosed. */
1432 MINIZ_EXPORT mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, const char *pFilename);
1433 MINIZ_EXPORT mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, const char *pFilename, mz_uint flags);
1434
1435 /* Adds the contents of a memory buffer to an archive. These functions record the current local time into the archive. */
1436 /* To add a directory entry, call this method with an archive name ending in a forwardslash with an empty buffer. */
1437 /* 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. */
1438 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);
1439
1440 /* Like mz_zip_writer_add_mem(), except you can specify a file comment field, and optionally supply the function with already compressed data. */
1441 /* uncomp_size/uncomp_crc32 are only used if the MZ_ZIP_FLAG_COMPRESSED_DATA flag is specified. */
1442 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,
1443 mz_uint64 uncomp_size, mz_uint32 uncomp_crc32);
1444
1445 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,
1446 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,
1447 const char *user_extra_data_central, mz_uint user_extra_data_central_len);
1448
1449 /* Adds the contents of a file to an archive. This function also records the disk file's modified time into the archive. */
1450 /* File data is supplied via a read callback function. User mz_zip_writer_add_(c)file to add a file directly.*/
1451 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,
1452 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,
1453 const char *user_extra_data_central, mz_uint user_extra_data_central_len);
1454
1455 # ifndef MINIZ_NO_STDIO
1456 /* Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. */
1457 /* 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. */
1458 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);
1459
1460 /* Like mz_zip_writer_add_file(), except the file data is read from the specified FILE stream. */
1461 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,
1462 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,
1463 const char *user_extra_data_central, mz_uint user_extra_data_central_len);
1464 # endif
1465
1466 /* Adds a file to an archive by fully cloning the data from another archive. */
1467 /* 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. */
1468 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);
1469
1470 /* Finalizes the archive by writing the central directory records followed by the end of central directory record. */
1471 /* After an archive is finalized, the only valid call on the mz_zip_archive struct is mz_zip_writer_end(). */
1472 /* An archive must be manually finalized by calling this function for it to be valid. */
1473 MINIZ_EXPORT mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip);
1474
1475 /* Finalizes a heap archive, returning a pointer to the heap block and its size. */
1476 /* The heap block will be allocated using the mz_zip_archive's alloc/realloc callbacks. */
1477 MINIZ_EXPORT mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, void **ppBuf, size_t *pSize);
1478
1479 /* Ends archive writing, freeing all allocations, and closing the output file if mz_zip_writer_init_file() was used. */
1480 /* Note for the archive to be valid, it *must* have been finalized before ending (this function will not do it for you). */
1481 MINIZ_EXPORT mz_bool mz_zip_writer_end(mz_zip_archive *pZip);
1482
1483 /* -------- Misc. high-level helper functions: */
1484
1485 /* mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) appends a memory blob to a ZIP archive. */
1486 /* 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). */
1487 /* 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. */
1488 /* 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. */
1489 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);
1490 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);
1491
1492 # ifndef MINIZ_NO_STDIO
1493 /* Reads a single file from an archive into a heap block. */
1494 /* If pComment is not NULL, only the file with the specified comment will be extracted. */
1495 /* Returns NULL on failure. */
1496 MINIZ_EXPORT void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name, size_t *pSize, mz_uint flags);
1497 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);
1498 # endif
1499
1500 # endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */
1501
1502 # ifdef __cplusplus
1503 }
1504 # endif
1505
1506 #endif /* MINIZ_NO_ARCHIVE_APIS */
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