1/* miniz.c 2.0.8 - 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 <[email protected]>, 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/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
116
117
118
119/* Defines to completely disable specific portions of miniz.c:
120 If all macros here are defined the only functionality remaining will be CRC-32, adler-32, tinfl, and tdefl. */
121
122/* Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. */
123#define MINIZ_NO_STDIO
124
125/* If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or */
126/* get/set file times, and the C run-time funcs that get/set times won't be called. */
127/* The current downside is the times written to your archives will be from 1979. */
128#define MINIZ_NO_TIME
129
130/* Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. */
131/*#define MINIZ_NO_ARCHIVE_APIS */
132
133/* Define MINIZ_NO_ARCHIVE_WRITING_APIS to disable all writing related ZIP archive API's. */
134/*#define MINIZ_NO_ARCHIVE_WRITING_APIS */
135
136/* Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. */
137/*#define MINIZ_NO_ZLIB_APIS */
138
139/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. */
140#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES
141
142/* Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc.
143 Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc
144 callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user
145 functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. */
146/*#define MINIZ_NO_MALLOC */
147
148#if defined(__TINYC__) && (defined(__linux) || defined(__linux__))
149/* TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux */
150#define MINIZ_NO_TIME
151#endif
152
153#include <stddef.h>
154
155#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS)
156#include <time.h>
157#endif
158
159#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__)
160/* MINIZ_X86_OR_X64_CPU is only used to help set the below macros. */
161#define MINIZ_X86_OR_X64_CPU 1
162#else
163#define MINIZ_X86_OR_X64_CPU 0
164#endif
165
166#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU
167/* Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. */
168#define MINIZ_LITTLE_ENDIAN 1
169#else
170#define MINIZ_LITTLE_ENDIAN 0
171#endif
172
173#if MINIZ_X86_OR_X64_CPU
174/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. */
175/* zdevito: ASAN doesn't like unligned loads and stores, and -O3 optimizes the unoptimized code pattern away anyawy */
176#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
177#else
178#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
179#endif
180
181#if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__)
182/* 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). */
183#define MINIZ_HAS_64BIT_REGISTERS 1
184#else
185#define MINIZ_HAS_64BIT_REGISTERS 0
186#endif
187
188#ifdef __cplusplus
189extern "C" {
190#endif
191
192/* ------------------- zlib-style API Definitions. */
193
194/* 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! */
195typedef unsigned long mz_ulong;
196
197/* 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. */
198void mz_free(void *p);
199
200#define MZ_ADLER32_INIT (1)
201/* mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL. */
202mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len);
203
204#define MZ_CRC32_INIT (0)
205/* mz_crc32() returns the initial CRC-32 value to use when called with ptr==NULL. */
206mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len);
207
208/* Compression strategies. */
209enum
210{
211 MZ_DEFAULT_STRATEGY = 0,
212 MZ_FILTERED = 1,
213 MZ_HUFFMAN_ONLY = 2,
214 MZ_RLE = 3,
215 MZ_FIXED = 4
216};
217
218/* Method */
219#define MZ_DEFLATED 8
220
221/* Heap allocation callbacks.
222Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long. */
223typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size);
224typedef void (*mz_free_func)(void *opaque, void *address);
225typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size);
226
227/* 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. */
228enum
229{
230 MZ_NO_COMPRESSION = 0,
231 MZ_BEST_SPEED = 1,
232 MZ_BEST_COMPRESSION = 9,
233 MZ_UBER_COMPRESSION = 10,
234 MZ_DEFAULT_LEVEL = 6,
235 MZ_DEFAULT_COMPRESSION = -1
236};
237
238#define MZ_VERSION "10.0.3"
239#define MZ_VERNUM 0xA030
240#define MZ_VER_MAJOR 10
241#define MZ_VER_MINOR 0
242#define MZ_VER_REVISION 3
243#define MZ_VER_SUBREVISION 0
244
245#ifndef MINIZ_NO_ZLIB_APIS
246
247/* 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). */
248enum
249{
250 MZ_NO_FLUSH = 0,
251 MZ_PARTIAL_FLUSH = 1,
252 MZ_SYNC_FLUSH = 2,
253 MZ_FULL_FLUSH = 3,
254 MZ_FINISH = 4,
255 MZ_BLOCK = 5
256};
257
258/* Return status codes. MZ_PARAM_ERROR is non-standard. */
259enum
260{
261 MZ_OK = 0,
262 MZ_STREAM_END = 1,
263 MZ_NEED_DICT = 2,
264 MZ_ERRNO = -1,
265 MZ_STREAM_ERROR = -2,
266 MZ_DATA_ERROR = -3,
267 MZ_MEM_ERROR = -4,
268 MZ_BUF_ERROR = -5,
269 MZ_VERSION_ERROR = -6,
270 MZ_PARAM_ERROR = -10000
271};
272
273/* Window bits */
274#define MZ_DEFAULT_WINDOW_BITS 15
275
276struct mz_internal_state;
277
278/* Compression/decompression stream struct. */
279typedef struct mz_stream_s
280{
281 const unsigned char *next_in; /* pointer to next byte to read */
282 unsigned int avail_in; /* number of bytes available at next_in */
283 mz_ulong total_in; /* total number of bytes consumed so far */
284
285 unsigned char *next_out; /* pointer to next byte to write */
286 unsigned int avail_out; /* number of bytes that can be written to next_out */
287 mz_ulong total_out; /* total number of bytes produced so far */
288
289 char *msg; /* error msg (unused) */
290 struct mz_internal_state *state; /* internal state, allocated by zalloc/zfree */
291
292 mz_alloc_func zalloc; /* optional heap allocation function (defaults to malloc) */
293 mz_free_func zfree; /* optional heap free function (defaults to free) */
294 void *opaque; /* heap alloc function user pointer */
295
296 int data_type; /* data_type (unused) */
297 mz_ulong adler; /* adler32 of the source or uncompressed data */
298 mz_ulong reserved; /* not used */
299} mz_stream;
300
301typedef mz_stream *mz_streamp;
302
303/* Returns the version string of miniz.c. */
304const char *mz_version(void);
305
306/* mz_deflateInit() initializes a compressor with default options: */
307/* Parameters: */
308/* pStream must point to an initialized mz_stream struct. */
309/* level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. */
310/* level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. */
311/* (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) */
312/* Return values: */
313/* MZ_OK on success. */
314/* MZ_STREAM_ERROR if the stream is bogus. */
315/* MZ_PARAM_ERROR if the input parameters are bogus. */
316/* MZ_MEM_ERROR on out of memory. */
317int mz_deflateInit(mz_streamp pStream, int level);
318
319/* mz_deflateInit2() is like mz_deflate(), except with more control: */
320/* Additional parameters: */
321/* method must be MZ_DEFLATED */
322/* 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) */
323/* mem_level must be between [1, 9] (it's checked but ignored by miniz.c) */
324int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy);
325
326/* Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). */
327int mz_deflateReset(mz_streamp pStream);
328
329/* mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. */
330/* Parameters: */
331/* 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. */
332/* flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. */
333/* Return values: */
334/* 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). */
335/* 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. */
336/* MZ_STREAM_ERROR if the stream is bogus. */
337/* MZ_PARAM_ERROR if one of the parameters is invalid. */
338/* 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.) */
339int mz_deflate(mz_streamp pStream, int flush);
340
341/* mz_deflateEnd() deinitializes a compressor: */
342/* Return values: */
343/* MZ_OK on success. */
344/* MZ_STREAM_ERROR if the stream is bogus. */
345int mz_deflateEnd(mz_streamp pStream);
346
347/* 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. */
348mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len);
349
350/* Single-call compression functions mz_compress() and mz_compress2(): */
351/* Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. */
352int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len);
353int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level);
354
355/* mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling mz_compress(). */
356mz_ulong mz_compressBound(mz_ulong source_len);
357
358/* Initializes a decompressor. */
359int mz_inflateInit(mz_streamp pStream);
360
361/* 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: */
362/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */
363int mz_inflateInit2(mz_streamp pStream, int window_bits);
364
365/* 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. */
366/* Parameters: */
367/* 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. */
368/* flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. */
369/* 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). */
370/* 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. */
371/* Return values: */
372/* 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. */
373/* 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. */
374/* MZ_STREAM_ERROR if the stream is bogus. */
375/* MZ_DATA_ERROR if the deflate stream is invalid. */
376/* MZ_PARAM_ERROR if one of the parameters is invalid. */
377/* 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 */
378/* with more input data, or with more room in the output buffer (except when using single call decompression, described above). */
379int mz_inflate(mz_streamp pStream, int flush);
380
381/* Deinitializes a decompressor. */
382int mz_inflateEnd(mz_streamp pStream);
383
384/* Single-call decompression. */
385/* Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. */
386int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len);
387
388/* Returns a string description of the specified error code, or NULL if the error code is invalid. */
389const char *mz_error(int err);
390
391/* 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. */
392/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. */
393#ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES
394typedef unsigned char Byte;
395typedef unsigned int uInt;
396typedef mz_ulong uLong;
397typedef Byte Bytef;
398typedef uInt uIntf;
399typedef char charf;
400typedef int intf;
401typedef void *voidpf;
402typedef uLong uLongf;
403typedef void *voidp;
404typedef void *const voidpc;
405#define Z_NULL 0
406#define Z_NO_FLUSH MZ_NO_FLUSH
407#define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH
408#define Z_SYNC_FLUSH MZ_SYNC_FLUSH
409#define Z_FULL_FLUSH MZ_FULL_FLUSH
410#define Z_FINISH MZ_FINISH
411#define Z_BLOCK MZ_BLOCK
412#define Z_OK MZ_OK
413#define Z_STREAM_END MZ_STREAM_END
414#define Z_NEED_DICT MZ_NEED_DICT
415#define Z_ERRNO MZ_ERRNO
416#define Z_STREAM_ERROR MZ_STREAM_ERROR
417#define Z_DATA_ERROR MZ_DATA_ERROR
418#define Z_MEM_ERROR MZ_MEM_ERROR
419#define Z_BUF_ERROR MZ_BUF_ERROR
420#define Z_VERSION_ERROR MZ_VERSION_ERROR
421#define Z_PARAM_ERROR MZ_PARAM_ERROR
422#define Z_NO_COMPRESSION MZ_NO_COMPRESSION
423#define Z_BEST_SPEED MZ_BEST_SPEED
424#define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION
425#define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION
426#define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY
427#define Z_FILTERED MZ_FILTERED
428#define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY
429#define Z_RLE MZ_RLE
430#define Z_FIXED MZ_FIXED
431#define Z_DEFLATED MZ_DEFLATED
432#define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS
433#define alloc_func mz_alloc_func
434#define free_func mz_free_func
435#define internal_state mz_internal_state
436#define z_stream mz_stream
437#define deflateInit mz_deflateInit
438#define deflateInit2 mz_deflateInit2
439#define deflateReset mz_deflateReset
440#define deflate mz_deflate
441#define deflateEnd mz_deflateEnd
442#define deflateBound mz_deflateBound
443#define compress mz_compress
444#define compress2 mz_compress2
445#define compressBound mz_compressBound
446#define inflateInit mz_inflateInit
447#define inflateInit2 mz_inflateInit2
448#define inflate mz_inflate
449#define inflateEnd mz_inflateEnd
450#define uncompress mz_uncompress
451#define crc32 mz_crc32
452#define adler32 mz_adler32
453#define MAX_WBITS 15
454#define MAX_MEM_LEVEL 9
455#define zError mz_error
456#define ZLIB_VERSION MZ_VERSION
457#define ZLIB_VERNUM MZ_VERNUM
458#define ZLIB_VER_MAJOR MZ_VER_MAJOR
459#define ZLIB_VER_MINOR MZ_VER_MINOR
460#define ZLIB_VER_REVISION MZ_VER_REVISION
461#define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION
462#define zlibVersion mz_version
463#define zlib_version mz_version()
464#endif /* #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES */
465
466#endif /* MINIZ_NO_ZLIB_APIS */
467
468#ifdef __cplusplus
469}
470#endif
471#pragma once
472#include <assert.h>
473#include <stdint.h>
474#include <stdlib.h>
475#include <string.h>
476
477/* ------------------- Types and macros */
478typedef unsigned char mz_uint8;
479typedef signed short mz_int16;
480typedef unsigned short mz_uint16;
481typedef unsigned int mz_uint32;
482typedef unsigned int mz_uint;
483typedef int64_t mz_int64;
484typedef uint64_t mz_uint64;
485typedef int mz_bool;
486
487#define MZ_FALSE (0)
488#define MZ_TRUE (1)
489
490/* Works around MSVC's spammy "warning C4127: conditional expression is constant" message. */
491#ifdef _MSC_VER
492#define MZ_MACRO_END while (0, 0)
493#else
494#define MZ_MACRO_END while (0)
495#endif
496
497#ifdef MINIZ_NO_STDIO
498#define MZ_FILE void *
499#else
500#include <stdio.h>
501#define MZ_FILE FILE
502#endif /* #ifdef MINIZ_NO_STDIO */
503
504#ifdef MINIZ_NO_TIME
505typedef struct mz_dummy_time_t_tag
506{
507 int m_dummy;
508} mz_dummy_time_t;
509#define MZ_TIME_T mz_dummy_time_t
510#else
511#define MZ_TIME_T time_t
512#endif
513
514#define MZ_ASSERT(x) assert(x)
515
516#ifdef MINIZ_NO_MALLOC
517#define MZ_MALLOC(x) NULL
518#define MZ_FREE(x) (void)x, ((void)0)
519#define MZ_REALLOC(p, x) NULL
520#else
521#define MZ_MALLOC(x) malloc(x)
522#define MZ_FREE(x) free(x)
523#define MZ_REALLOC(p, x) realloc(p, x)
524#endif
525
526#define MZ_MAX(a, b) (((a) > (b)) ? (a) : (b))
527#define MZ_MIN(a, b) (((a) < (b)) ? (a) : (b))
528#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj))
529
530#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
531#define MZ_READ_LE16(p) *((const mz_uint16 *)(p))
532#define MZ_READ_LE32(p) *((const mz_uint32 *)(p))
533#else
534#define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U))
535#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))
536#endif
537
538#define MZ_READ_LE64(p) (((mz_uint64)MZ_READ_LE32(p)) | (((mz_uint64)MZ_READ_LE32((const mz_uint8 *)(p) + sizeof(mz_uint32))) << 32U))
539
540#ifdef _MSC_VER
541#define MZ_FORCEINLINE __forceinline
542#elif defined(__GNUC__)
543#define MZ_FORCEINLINE __inline__ __attribute__((__always_inline__))
544#else
545#define MZ_FORCEINLINE inline
546#endif
547
548#ifdef __cplusplus
549extern "C" {
550#endif
551
552extern void *miniz_def_alloc_func(void *opaque, size_t items, size_t size);
553extern void miniz_def_free_func(void *opaque, void *address);
554extern void *miniz_def_realloc_func(void *opaque, void *address, size_t items, size_t size);
555
556#define MZ_UINT16_MAX (0xFFFFU)
557#define MZ_UINT32_MAX (0xFFFFFFFFU)
558
559#ifdef __cplusplus
560}
561#endif
562#pragma once
563
564
565#ifdef __cplusplus
566extern "C" {
567#endif
568/* ------------------- Low-level Compression API Definitions */
569
570/* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently). */
571#define TDEFL_LESS_MEMORY 0
572
573/* tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): */
574/* 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). */
575enum
576{
577 TDEFL_HUFFMAN_ONLY = 0,
578 TDEFL_DEFAULT_MAX_PROBES = 128,
579 TDEFL_MAX_PROBES_MASK = 0xFFF
580};
581
582/* 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. */
583/* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). */
584/* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. */
585/* 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). */
586/* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) */
587/* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */
588/* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. */
589/* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. */
590/* The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). */
591enum
592{
593 TDEFL_WRITE_ZLIB_HEADER = 0x01000,
594 TDEFL_COMPUTE_ADLER32 = 0x02000,
595 TDEFL_GREEDY_PARSING_FLAG = 0x04000,
596 TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000,
597 TDEFL_RLE_MATCHES = 0x10000,
598 TDEFL_FILTER_MATCHES = 0x20000,
599 TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000,
600 TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000
601};
602
603/* High level compression functions: */
604/* tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). */
605/* On entry: */
606/* pSrc_buf, src_buf_len: Pointer and size of source block to compress. */
607/* flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. */
608/* On return: */
609/* Function returns a pointer to the compressed data, or NULL on failure. */
610/* *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. */
611/* The caller must free() the returned block when it's no longer needed. */
612void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags);
613
614/* tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. */
615/* Returns 0 on failure. */
616size_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);
617
618/* Compresses an image to a compressed PNG file in memory. */
619/* On entry: */
620/* pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. */
621/* The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. */
622/* 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 */
623/* If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). */
624/* On return: */
625/* Function returns a pointer to the compressed data, or NULL on failure. */
626/* *pLen_out will be set to the size of the PNG image file. */
627/* The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. */
628void *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);
629void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out);
630
631/* Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. */
632typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser);
633
634/* tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. */
635mz_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);
636
637enum
638{
639 TDEFL_MAX_HUFF_TABLES = 3,
640 TDEFL_MAX_HUFF_SYMBOLS_0 = 288,
641 TDEFL_MAX_HUFF_SYMBOLS_1 = 32,
642 TDEFL_MAX_HUFF_SYMBOLS_2 = 19,
643 TDEFL_LZ_DICT_SIZE = 32768,
644 TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1,
645 TDEFL_MIN_MATCH_LEN = 3,
646 TDEFL_MAX_MATCH_LEN = 258
647};
648
649/* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). */
650#if TDEFL_LESS_MEMORY
651enum
652{
653 TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024,
654 TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10,
655 TDEFL_MAX_HUFF_SYMBOLS = 288,
656 TDEFL_LZ_HASH_BITS = 12,
657 TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,
658 TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,
659 TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS
660};
661#else
662enum
663{
664 TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024,
665 TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10,
666 TDEFL_MAX_HUFF_SYMBOLS = 288,
667 TDEFL_LZ_HASH_BITS = 15,
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#endif
673
674/* 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. */
675typedef enum {
676 TDEFL_STATUS_BAD_PARAM = -2,
677 TDEFL_STATUS_PUT_BUF_FAILED = -1,
678 TDEFL_STATUS_OKAY = 0,
679 TDEFL_STATUS_DONE = 1
680} tdefl_status;
681
682/* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */
683typedef enum {
684 TDEFL_NO_FLUSH = 0,
685 TDEFL_SYNC_FLUSH = 2,
686 TDEFL_FULL_FLUSH = 3,
687 TDEFL_FINISH = 4
688} tdefl_flush;
689
690/* tdefl's compression state structure. */
691typedef struct
692{
693 tdefl_put_buf_func_ptr m_pPut_buf_func;
694 void *m_pPut_buf_user;
695 mz_uint m_flags, m_max_probes[2];
696 int m_greedy_parsing;
697 mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size;
698 mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end;
699 mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer;
700 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;
701 tdefl_status m_prev_return_status;
702 const void *m_pIn_buf;
703 void *m_pOut_buf;
704 size_t *m_pIn_buf_size, *m_pOut_buf_size;
705 tdefl_flush m_flush;
706 const mz_uint8 *m_pSrc;
707 size_t m_src_buf_left, m_out_buf_ofs;
708 mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1];
709 mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
710 mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
711 mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];
712 mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE];
713 mz_uint16 m_next[TDEFL_LZ_DICT_SIZE];
714 mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE];
715 mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE];
716} tdefl_compressor;
717
718/* Initializes the compressor. */
719/* There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. */
720/* 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. */
721/* If pBut_buf_func is NULL the user should always call the tdefl_compress() API. */
722/* flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) */
723tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);
724
725/* 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. */
726tdefl_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);
727
728/* tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. */
729/* tdefl_compress_buffer() always consumes the entire input buffer. */
730tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush);
731
732tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d);
733mz_uint32 tdefl_get_adler32(tdefl_compressor *d);
734
735/* Create tdefl_compress() flags given zlib-style compression parameters. */
736/* level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) */
737/* window_bits may be -15 (raw deflate) or 15 (zlib) */
738/* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */
739mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);
740
741/* Allocate the tdefl_compressor structure in C so that */
742/* non-C language bindings to tdefl_ API don't need to worry about */
743/* structure size and allocation mechanism. */
744tdefl_compressor *tdefl_compressor_alloc();
745void tdefl_compressor_free(tdefl_compressor *pComp);
746
747#ifdef __cplusplus
748}
749#endif
750#pragma once
751
752/* ------------------- Low-level Decompression API Definitions */
753
754#ifdef __cplusplus
755extern "C" {
756#endif
757/* Decompression flags used by tinfl_decompress(). */
758/* 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. */
759/* 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. */
760/* 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). */
761/* TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. */
762enum
763{
764 TINFL_FLAG_PARSE_ZLIB_HEADER = 1,
765 TINFL_FLAG_HAS_MORE_INPUT = 2,
766 TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4,
767 TINFL_FLAG_COMPUTE_ADLER32 = 8
768};
769
770/* High level decompression functions: */
771/* tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). */
772/* On entry: */
773/* pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data to decompress. */
774/* On return: */
775/* Function returns a pointer to the decompressed data, or NULL on failure. */
776/* *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. */
777/* The caller must call mz_free() on the returned block when it's no longer needed. */
778void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags);
779
780/* tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. */
781/* Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. */
782#define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1))
783size_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);
784
785/* 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. */
786/* Returns 1 on success or 0 on failure. */
787typedef int (*tinfl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser);
788int 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);
789
790struct tinfl_decompressor_tag;
791typedef struct tinfl_decompressor_tag tinfl_decompressor;
792
793/* Allocate the tinfl_decompressor structure in C so that */
794/* non-C language bindings to tinfl_ API don't need to worry about */
795/* structure size and allocation mechanism. */
796
797tinfl_decompressor *tinfl_decompressor_alloc();
798void tinfl_decompressor_free(tinfl_decompressor *pDecomp);
799
800/* Max size of LZ dictionary. */
801#define TINFL_LZ_DICT_SIZE 32768
802
803/* Return status. */
804typedef enum {
805 /* 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 */
806 /* 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). */
807 /* If you call it again with no input you'll just get TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS again. */
808 TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS = -4,
809
810 /* 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.) */
811 TINFL_STATUS_BAD_PARAM = -3,
812
813 /* 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. */
814 TINFL_STATUS_ADLER32_MISMATCH = -2,
815
816 /* 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. */
817 TINFL_STATUS_FAILED = -1,
818
819 /* Any status code less than TINFL_STATUS_DONE must indicate a failure. */
820
821 /* 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 */
822 /* 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. */
823 TINFL_STATUS_DONE = 0,
824
825 /* 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 */
826 /* 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 */
827 /* proceed, so be sure to properly set the TINFL_FLAG_HAS_MORE_INPUT flag. */
828 TINFL_STATUS_NEEDS_MORE_INPUT = 1,
829
830 /* 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. */
831 /* 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 */
832 /* (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 */
833 /* so I may need to add some code to address this. */
834 TINFL_STATUS_HAS_MORE_OUTPUT = 2
835} tinfl_status;
836
837/* Initializes the decompressor to its initial state. */
838#define tinfl_init(r) \
839 do \
840 { \
841 (r)->m_state = 0; \
842 } \
843 MZ_MACRO_END
844#define tinfl_get_adler32(r) (r)->m_check_adler32
845
846/* 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. */
847/* 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. */
848tinfl_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);
849
850/* Internal/private bits follow. */
851enum
852{
853 TINFL_MAX_HUFF_TABLES = 3,
854 TINFL_MAX_HUFF_SYMBOLS_0 = 288,
855 TINFL_MAX_HUFF_SYMBOLS_1 = 32,
856 TINFL_MAX_HUFF_SYMBOLS_2 = 19,
857 TINFL_FAST_LOOKUP_BITS = 10,
858 TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS
859};
860
861typedef struct
862{
863 mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0];
864 mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2];
865} tinfl_huff_table;
866
867#if MINIZ_HAS_64BIT_REGISTERS
868#define TINFL_USE_64BIT_BITBUF 1
869#else
870#define TINFL_USE_64BIT_BITBUF 0
871#endif
872
873#if TINFL_USE_64BIT_BITBUF
874typedef mz_uint64 tinfl_bit_buf_t;
875#define TINFL_BITBUF_SIZE (64)
876#else
877typedef mz_uint32 tinfl_bit_buf_t;
878#define TINFL_BITBUF_SIZE (32)
879#endif
880
881struct tinfl_decompressor_tag
882{
883 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];
884 tinfl_bit_buf_t m_bit_buf;
885 size_t m_dist_from_out_buf_start;
886 tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES];
887 mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137];
888};
889
890#ifdef __cplusplus
891}
892#endif
893
894#pragma once
895
896
897/* ------------------- ZIP archive reading/writing */
898
899#ifndef MINIZ_NO_ARCHIVE_APIS
900
901#ifdef __cplusplus
902extern "C" {
903#endif
904
905enum
906{
907 /* Note: These enums can be reduced as needed to save memory or stack space - they are pretty conservative. */
908 MZ_ZIP_MAX_IO_BUF_SIZE = 64 * 1024,
909 MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 512,
910 MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 512
911};
912
913typedef struct
914{
915 /* Central directory file index. */
916 mz_uint32 m_file_index;
917
918 /* 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. */
919 mz_uint64 m_central_dir_ofs;
920
921 /* These fields are copied directly from the zip's central dir. */
922 mz_uint16 m_version_made_by;
923 mz_uint16 m_version_needed;
924 mz_uint16 m_bit_flag;
925 mz_uint16 m_method;
926
927#ifndef MINIZ_NO_TIME
928 MZ_TIME_T m_time;
929#endif
930
931 /* CRC-32 of uncompressed data. */
932 mz_uint32 m_crc32;
933
934 /* File's compressed size. */
935 mz_uint64 m_comp_size;
936
937 /* 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. */
938 mz_uint64 m_uncomp_size;
939
940 /* Zip internal and external file attributes. */
941 mz_uint16 m_internal_attr;
942 mz_uint32 m_external_attr;
943
944 /* Entry's local header file offset in bytes. */
945 mz_uint64 m_local_header_ofs;
946
947 /* Size of comment in bytes. */
948 mz_uint32 m_comment_size;
949
950 /* MZ_TRUE if the entry appears to be a directory. */
951 mz_bool m_is_directory;
952
953 /* MZ_TRUE if the entry uses encryption/strong encryption (which miniz_zip doesn't support) */
954 mz_bool m_is_encrypted;
955
956 /* MZ_TRUE if the file is not encrypted, a patch file, and if it uses a compression method we support. */
957 mz_bool m_is_supported;
958
959 /* Filename. If string ends in '/' it's a subdirectory entry. */
960 /* Guaranteed to be zero terminated, may be truncated to fit. */
961 char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE];
962
963 /* Comment field. */
964 /* Guaranteed to be zero terminated, may be truncated to fit. */
965 char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE];
966
967} mz_zip_archive_file_stat;
968
969typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n);
970typedef size_t (*mz_file_write_func)(void *pOpaque, mz_uint64 file_ofs, const void *pBuf, size_t n);
971typedef mz_bool (*mz_file_needs_keepalive)(void *pOpaque);
972
973struct mz_zip_internal_state_tag;
974typedef struct mz_zip_internal_state_tag mz_zip_internal_state;
975
976typedef enum {
977 MZ_ZIP_MODE_INVALID = 0,
978 MZ_ZIP_MODE_READING = 1,
979 MZ_ZIP_MODE_WRITING = 2,
980 MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3
981} mz_zip_mode;
982
983typedef enum {
984 MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100,
985 MZ_ZIP_FLAG_IGNORE_PATH = 0x0200,
986 MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400,
987 MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800,
988 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) */
989 MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY = 0x2000, /* validate the local headers, but don't decompress the entire file and check the crc32 */
990 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 */
991 MZ_ZIP_FLAG_WRITE_ALLOW_READING = 0x8000,
992 MZ_ZIP_FLAG_ASCII_FILENAME = 0x10000
993} mz_zip_flags;
994
995typedef enum {
996 MZ_ZIP_TYPE_INVALID = 0,
997 MZ_ZIP_TYPE_USER,
998 MZ_ZIP_TYPE_MEMORY,
999 MZ_ZIP_TYPE_HEAP,
1000 MZ_ZIP_TYPE_FILE,
1001 MZ_ZIP_TYPE_CFILE,
1002 MZ_ZIP_TOTAL_TYPES
1003} mz_zip_type;
1004
1005/* miniz error codes. Be sure to update mz_zip_get_error_string() if you add or modify this enum. */
1006typedef enum {
1007 MZ_ZIP_NO_ERROR = 0,
1008 MZ_ZIP_UNDEFINED_ERROR,
1009 MZ_ZIP_TOO_MANY_FILES,
1010 MZ_ZIP_FILE_TOO_LARGE,
1011 MZ_ZIP_UNSUPPORTED_METHOD,
1012 MZ_ZIP_UNSUPPORTED_ENCRYPTION,
1013 MZ_ZIP_UNSUPPORTED_FEATURE,
1014 MZ_ZIP_FAILED_FINDING_CENTRAL_DIR,
1015 MZ_ZIP_NOT_AN_ARCHIVE,
1016 MZ_ZIP_INVALID_HEADER_OR_CORRUPTED,
1017 MZ_ZIP_UNSUPPORTED_MULTIDISK,
1018 MZ_ZIP_DECOMPRESSION_FAILED,
1019 MZ_ZIP_COMPRESSION_FAILED,
1020 MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE,
1021 MZ_ZIP_CRC_CHECK_FAILED,
1022 MZ_ZIP_UNSUPPORTED_CDIR_SIZE,
1023 MZ_ZIP_ALLOC_FAILED,
1024 MZ_ZIP_FILE_OPEN_FAILED,
1025 MZ_ZIP_FILE_CREATE_FAILED,
1026 MZ_ZIP_FILE_WRITE_FAILED,
1027 MZ_ZIP_FILE_READ_FAILED,
1028 MZ_ZIP_FILE_CLOSE_FAILED,
1029 MZ_ZIP_FILE_SEEK_FAILED,
1030 MZ_ZIP_FILE_STAT_FAILED,
1031 MZ_ZIP_INVALID_PARAMETER,
1032 MZ_ZIP_INVALID_FILENAME,
1033 MZ_ZIP_BUF_TOO_SMALL,
1034 MZ_ZIP_INTERNAL_ERROR,
1035 MZ_ZIP_FILE_NOT_FOUND,
1036 MZ_ZIP_ARCHIVE_TOO_LARGE,
1037 MZ_ZIP_VALIDATION_FAILED,
1038 MZ_ZIP_WRITE_CALLBACK_FAILED,
1039 MZ_ZIP_TOTAL_ERRORS
1040} mz_zip_error;
1041
1042typedef struct mz_zip_archive /* note: added name so it can be forward declared */
1043{
1044 mz_uint64 m_archive_size;
1045 mz_uint64 m_central_directory_file_ofs;
1046
1047 /* We only support up to UINT32_MAX files in zip64 mode. */
1048 mz_uint32 m_total_files;
1049 mz_zip_mode m_zip_mode;
1050 mz_zip_type m_zip_type;
1051 mz_zip_error m_last_error;
1052
1053 mz_uint64 m_file_offset_alignment;
1054
1055 mz_alloc_func m_pAlloc;
1056 mz_free_func m_pFree;
1057 mz_realloc_func m_pRealloc;
1058 void *m_pAlloc_opaque;
1059
1060 mz_file_read_func m_pRead;
1061 mz_file_write_func m_pWrite;
1062 mz_file_needs_keepalive m_pNeeds_keepalive;
1063 void *m_pIO_opaque;
1064
1065 mz_zip_internal_state *m_pState;
1066
1067} mz_zip_archive;
1068
1069typedef struct
1070{
1071 mz_zip_archive *pZip;
1072 mz_uint flags;
1073
1074 int status;
1075#ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS
1076 mz_uint file_crc32;
1077#endif
1078 mz_uint64 read_buf_size, read_buf_ofs, read_buf_avail, comp_remaining, out_buf_ofs, cur_file_ofs;
1079 mz_zip_archive_file_stat file_stat;
1080 void *pRead_buf;
1081 void *pWrite_buf;
1082
1083 size_t out_blk_remain;
1084
1085 tinfl_decompressor inflator;
1086
1087} mz_zip_reader_extract_iter_state;
1088
1089/* -------- ZIP reading */
1090
1091/* Inits a ZIP archive reader. */
1092/* These functions read and validate the archive's central directory. */
1093mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, mz_uint flags);
1094
1095mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, size_t size, mz_uint flags);
1096
1097#ifndef MINIZ_NO_STDIO
1098/* Read a archive from a disk file. */
1099/* file_start_ofs is the file offset where the archive actually begins, or 0. */
1100/* 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. */
1101mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint32 flags);
1102mz_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);
1103
1104/* Read an archive from an already opened FILE, beginning at the current file position. */
1105/* 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. */
1106/* The FILE will NOT be closed when mz_zip_reader_end() is called. */
1107mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, mz_uint64 archive_size, mz_uint flags);
1108#endif
1109
1110/* Ends archive reading, freeing all allocations, and closing the input archive file if mz_zip_reader_init_file() was used. */
1111mz_bool mz_zip_reader_end(mz_zip_archive *pZip);
1112
1113/* -------- ZIP reading or writing */
1114
1115/* Clears a mz_zip_archive struct to all zeros. */
1116/* Important: This must be done before passing the struct to any mz_zip functions. */
1117void mz_zip_zero_struct(mz_zip_archive *pZip);
1118
1119mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip);
1120mz_zip_type mz_zip_get_type(mz_zip_archive *pZip);
1121
1122/* Returns the total number of files in the archive. */
1123mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip);
1124
1125mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip);
1126mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip);
1127MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip);
1128
1129/* Reads n bytes of raw archive data, starting at file offset file_ofs, to pBuf. */
1130size_t mz_zip_read_archive_data(mz_zip_archive *pZip, mz_uint64 file_ofs, void *pBuf, size_t n);
1131
1132/* All mz_zip funcs set the m_last_error field in the mz_zip_archive struct. These functions retrieve/manipulate this field. */
1133/* Note that the m_last_error functionality is not thread safe. */
1134mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, mz_zip_error err_num);
1135mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip);
1136mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip);
1137mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip);
1138const char *mz_zip_get_error_string(mz_zip_error mz_err);
1139
1140/* MZ_TRUE if the archive file entry is a directory entry. */
1141mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, mz_uint file_index);
1142
1143/* MZ_TRUE if the file is encrypted/strong encrypted. */
1144mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, mz_uint file_index);
1145
1146/* MZ_TRUE if the compression method is supported, and the file is not encrypted, and the file is not a compressed patch file. */
1147mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, mz_uint file_index);
1148
1149/* Retrieves the filename of an archive file entry. */
1150/* 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. */
1151mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, mz_uint file_index, char *pFilename, mz_uint filename_buf_size);
1152
1153/* Attempts to locates a file in the archive's central directory. */
1154/* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */
1155/* Returns -1 if the file cannot be found. */
1156int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags);
1157int mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags, mz_uint32 *file_index);
1158
1159/* Returns detailed information about an archive file entry. */
1160mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, mz_uint file_index, mz_zip_archive_file_stat *pStat);
1161
1162/* MZ_TRUE if the file is in zip64 format. */
1163/* 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. */
1164mz_bool mz_zip_is_zip64(mz_zip_archive *pZip);
1165
1166/* Returns the total central directory size in bytes. */
1167/* The current max supported size is <= MZ_UINT32_MAX. */
1168size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip);
1169
1170/* Extracts a archive file to a memory buffer using no memory allocation. */
1171/* There must be at least enough room on the stack to store the inflator's state (~34KB or so). */
1172mz_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);
1173mz_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);
1174
1175/* Extracts a archive file to a memory buffer. */
1176mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive *pZip, mz_uint file_index, void *pBuf, size_t buf_size, mz_uint flags);
1177mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, const char *pFilename, void *pBuf, size_t buf_size, mz_uint flags);
1178
1179/* Extracts a archive file to a dynamically allocated heap buffer. */
1180/* The memory will be allocated via the mz_zip_archive's alloc/realloc functions. */
1181/* Returns NULL and sets the last error on failure. */
1182void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index, size_t *pSize, mz_uint flags);
1183void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, const char *pFilename, size_t *pSize, mz_uint flags);
1184
1185/* Extracts a archive file using a callback function to output the file's data. */
1186mz_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);
1187mz_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);
1188
1189/* Extract a file iteratively */
1190mz_zip_reader_extract_iter_state* mz_zip_reader_extract_iter_new(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags);
1191mz_zip_reader_extract_iter_state* mz_zip_reader_extract_file_iter_new(mz_zip_archive *pZip, const char *pFilename, mz_uint flags);
1192size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state* pState, void* pvBuf, size_t buf_size);
1193mz_bool mz_zip_reader_extract_iter_free(mz_zip_reader_extract_iter_state* pState);
1194
1195#ifndef MINIZ_NO_STDIO
1196/* Extracts a archive file to a disk file and sets its last accessed and modified times. */
1197/* This function only extracts files, not archive directory records. */
1198mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, mz_uint file_index, const char *pDst_filename, mz_uint flags);
1199mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive *pZip, const char *pArchive_filename, const char *pDst_filename, mz_uint flags);
1200
1201/* Extracts a archive file starting at the current position in the destination FILE stream. */
1202mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, mz_uint file_index, MZ_FILE *File, mz_uint flags);
1203mz_bool mz_zip_reader_extract_file_to_cfile(mz_zip_archive *pZip, const char *pArchive_filename, MZ_FILE *pFile, mz_uint flags);
1204#endif
1205
1206#if 0
1207/* TODO */
1208 typedef void *mz_zip_streaming_extract_state_ptr;
1209 mz_zip_streaming_extract_state_ptr mz_zip_streaming_extract_begin(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags);
1210 uint64_t mz_zip_streaming_extract_get_size(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState);
1211 uint64_t mz_zip_streaming_extract_get_cur_ofs(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState);
1212 mz_bool mz_zip_streaming_extract_seek(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, uint64_t new_ofs);
1213 size_t mz_zip_streaming_extract_read(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, void *pBuf, size_t buf_size);
1214 mz_bool mz_zip_streaming_extract_end(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState);
1215#endif
1216
1217/* 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. */
1218/* It also validates that each file can be successfully uncompressed unless the MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY is specified. */
1219mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags);
1220
1221/* Validates an entire archive by calling mz_zip_validate_file() on each file. */
1222mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags);
1223
1224/* Misc utils/helpers, valid for ZIP reading or writing */
1225mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, mz_uint flags, mz_zip_error *pErr);
1226mz_bool mz_zip_validate_file_archive(const char *pFilename, mz_uint flags, mz_zip_error *pErr);
1227
1228/* Universal end function - calls either mz_zip_reader_end() or mz_zip_writer_end(). */
1229mz_bool mz_zip_end(mz_zip_archive *pZip);
1230
1231/* -------- ZIP writing */
1232
1233#ifndef MINIZ_NO_ARCHIVE_WRITING_APIS
1234
1235/* Inits a ZIP archive writer. */
1236/*Set pZip->m_pWrite (and pZip->m_pIO_opaque) before calling mz_zip_writer_init or mz_zip_writer_init_v2*/
1237/*The output is streamable, i.e. file_ofs in mz_file_write_func always increases only by n*/
1238mz_bool mz_zip_writer_init(mz_zip_archive *pZip, mz_uint64 existing_size);
1239mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, mz_uint64 existing_size, mz_uint flags);
1240
1241mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, size_t initial_allocation_size);
1242mz_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);
1243
1244#ifndef MINIZ_NO_STDIO
1245mz_bool mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint64 size_to_reserve_at_beginning);
1246mz_bool mz_zip_writer_init_file_v2(mz_zip_archive *pZip, const char *pFilename, mz_uint64 size_to_reserve_at_beginning, mz_uint flags);
1247mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, mz_uint flags);
1248#endif
1249
1250/* Converts a ZIP archive reader object into a writer object, to allow efficient in-place file appends to occur on an existing archive. */
1251/* 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. */
1252/* 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). */
1253/* Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's user provided m_pWrite function cannot be NULL. */
1254/* Note: In-place archive modification is not recommended unless you know what you're doing, because if execution stops or something goes wrong before */
1255/* the archive is finalized the file's central directory will be hosed. */
1256mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, const char *pFilename);
1257mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, const char *pFilename, mz_uint flags);
1258
1259/* Adds the contents of a memory buffer to an archive. These functions record the current local time into the archive. */
1260/* To add a directory entry, call this method with an archive name ending in a forwardslash with an empty buffer. */
1261/* 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. */
1262mz_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);
1263
1264/* Like mz_zip_writer_add_mem(), except you can specify a file comment field, and optionally supply the function with already compressed data. */
1265/* uncomp_size/uncomp_crc32 are only used if the MZ_ZIP_FLAG_COMPRESSED_DATA flag is specified. */
1266mz_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,
1267 mz_uint64 uncomp_size, mz_uint32 uncomp_crc32);
1268
1269mz_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,
1270 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,
1271 const char *user_extra_data_central, mz_uint user_extra_data_central_len);
1272
1273#ifndef MINIZ_NO_STDIO
1274/* Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. */
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. */
1276mz_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);
1277
1278/* Like mz_zip_writer_add_file(), except the file data is read from the specified FILE stream. */
1279mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name, MZ_FILE *pSrc_file, mz_uint64 size_to_add,
1280 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,
1281 const char *user_extra_data_central, mz_uint user_extra_data_central_len);
1282#endif
1283
1284/* Adds a file to an archive by fully cloning the data from another archive. */
1285/* 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. */
1286mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, mz_zip_archive *pSource_zip, mz_uint src_file_index);
1287
1288/* Finalizes the archive by writing the central directory records followed by the end of central directory record. */
1289/* After an archive is finalized, the only valid call on the mz_zip_archive struct is mz_zip_writer_end(). */
1290/* An archive must be manually finalized by calling this function for it to be valid. */
1291mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip);
1292
1293/* Finalizes a heap archive, returning a poiner to the heap block and its size. */
1294/* The heap block will be allocated using the mz_zip_archive's alloc/realloc callbacks. */
1295mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, void **ppBuf, size_t *pSize);
1296
1297/* Ends archive writing, freeing all allocations, and closing the output file if mz_zip_writer_init_file() was used. */
1298/* Note for the archive to be valid, it *must* have been finalized before ending (this function will not do it for you). */
1299mz_bool mz_zip_writer_end(mz_zip_archive *pZip);
1300
1301/* -------- Misc. high-level helper functions: */
1302
1303/* mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) appends a memory blob to a ZIP archive. */
1304/* 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). */
1305/* 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. */
1306/* 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. */
1307mz_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);
1308mz_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);
1309
1310/* Reads a single file from an archive into a heap block. */
1311/* If pComment is not NULL, only the file with the specified comment will be extracted. */
1312/* Returns NULL on failure. */
1313void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name, size_t *pSize, mz_uint flags);
1314void *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);
1315
1316#endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */
1317
1318#ifdef __cplusplus
1319}
1320#endif
1321
1322#endif /* MINIZ_NO_ARCHIVE_APIS */
1323