diff options
Diffstat (limited to 'source/kit/miniz')
| -rw-r--r-- | source/kit/miniz/miniz.c | 692 | ||||
| -rw-r--r-- | source/kit/miniz/miniz.h | 658 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_common.h | 122 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_tdef.c | 1792 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_tdef.h | 271 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_tinfl.c | 818 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_tinfl.h | 218 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_zip.c | 5473 | ||||
| -rw-r--r-- | source/kit/miniz/miniz_zip.h | 668 |
9 files changed, 10712 insertions, 0 deletions
diff --git a/source/kit/miniz/miniz.c b/source/kit/miniz/miniz.c new file mode 100644 index 0000000..b96c176 --- /dev/null +++ b/source/kit/miniz/miniz.c @@ -0,0 +1,692 @@ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person + *obtaining a copy of this software and associated documentation files + *(the "Software"), to deal in the Software without restriction, + *including without limitation the rights to use, copy, modify, merge, + *publish, distribute, sublicense, and/or sell copies of the Software, + *and to permit persons to whom the Software is furnished to do so, + *subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + *included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + *NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + *BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + *ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + *CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + *SOFTWARE. + * + **************************************************************************/ + +#include "miniz.h" + +typedef unsigned char + mz_validate_uint16[sizeof(mz_uint16) == 2 ? 1 : -1]; +typedef unsigned char + mz_validate_uint32[sizeof(mz_uint32) == 4 ? 1 : -1]; +typedef unsigned char + mz_validate_uint64[sizeof(mz_uint64) == 8 ? 1 : -1]; + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- zlib-style API's */ + +mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, + size_t buf_len) { + mz_uint32 i, s1 = (mz_uint32) (adler & 0xffff), + s2 = (mz_uint32) (adler >> 16); + size_t block_len = buf_len % 5552; + if (!ptr) + return MZ_ADLER32_INIT; + while (buf_len) { + for (i = 0; i + 7 < block_len; i += 8, ptr += 8) { + s1 += ptr[0], s2 += s1; + s1 += ptr[1], s2 += s1; + s1 += ptr[2], s2 += s1; + s1 += ptr[3], s2 += s1; + s1 += ptr[4], s2 += s1; + s1 += ptr[5], s2 += s1; + s1 += ptr[6], s2 += s1; + s1 += ptr[7], s2 += s1; + } + for (; i < block_len; ++i) s1 += *ptr++, s2 += s1; + s1 %= 65521U, s2 %= 65521U; + buf_len -= block_len; + block_len = 5552; + } + return (s2 << 16) + s1; +} + +/* Karl Malbrain's compact CRC-32. See "A compact CCITT crc16 and + * crc32 C implementation that balances processor cache usage against + * speed": http://www.geocities.com/malbrain/ */ +#if 0 + mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len) + { + static const mz_uint32 s_crc32[16] = { 0, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, + 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c }; + mz_uint32 crcu32 = (mz_uint32)crc; + if (!ptr) + return MZ_CRC32_INIT; + crcu32 = ~crcu32; + while (buf_len--) + { + mz_uint8 b = *ptr++; + crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b & 0xF)]; + crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b >> 4)]; + } + return ~crcu32; + } +#elif defined(USE_EXTERNAL_MZCRC) +/* If USE_EXTERNAL_CRC is defined, an external module will export the + * mz_crc32() symbol for us to use, e.g. an SSE-accelerated version. + * Depending on the impl, it may be necessary to ~ the input/output + * crc values. + */ +mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len); +#else +/* Faster, but larger CPU cache footprint. + */ +mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len) { + static const mz_uint32 s_crc_table[256] = { + 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, + 0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, + 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, + 0x90BF1D91, 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, + 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, 0x136C9856, + 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, + 0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, + 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, + 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, + 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, 0x26D930AC, 0x51DE003A, + 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, + 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, + 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, + 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, + 0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E, + 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, + 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, + 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950, + 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, + 0xFBD44C65, 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, + 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, + 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, + 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA, 0xBE0B1010, + 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, + 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, + 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, + 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, + 0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, + 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, 0xF00F9344, + 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, + 0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, + 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, + 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, + 0xA6BC5767, 0x3FB506DD, 0x48B2364B, 0xD80D2BDA, 0xAF0A1B4C, + 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, + 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, + 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, + 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, + 0x2CD99E8B, 0x5BDEAE1D, 0x9B64C2B0, 0xEC63F226, 0x756AA39C, + 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, + 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, + 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242, + 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, + 0x18B74777, 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, + 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, 0xA00AE278, + 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, + 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, + 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, + 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, + 0xCDD70693, 0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, + 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, + 0x2D02EF8D + }; + + mz_uint32 crc32 = (mz_uint32) crc ^ 0xFFFFFFFF; + const mz_uint8 *pByte_buf = (const mz_uint8 *) ptr; + + while (buf_len >= 4) { + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF]; + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[1]) & 0xFF]; + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[2]) & 0xFF]; + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[3]) & 0xFF]; + pByte_buf += 4; + buf_len -= 4; + } + + while (buf_len) { + crc32 = (crc32 >> 8) ^ s_crc_table[(crc32 ^ pByte_buf[0]) & 0xFF]; + ++pByte_buf; + --buf_len; + } + + return ~crc32; +} +#endif + +void mz_free(void *p) { + MZ_FREE(p); +} + +void *miniz_def_alloc_func(void *opaque, size_t items, size_t size) { + (void) opaque, (void) items, (void) size; + return MZ_MALLOC(items * size); +} +void miniz_def_free_func(void *opaque, void *address) { + (void) opaque, (void) address; + MZ_FREE(address); +} +void *miniz_def_realloc_func(void *opaque, void *address, + size_t items, size_t size) { + (void) opaque, (void) address, (void) items, (void) size; + return MZ_REALLOC(address, items * size); +} + +const char *mz_version(void) { + return MZ_VERSION; +} + +#ifndef MINIZ_NO_ZLIB_APIS + +# ifndef MINIZ_NO_DEFLATE_APIS + +int mz_deflateInit(mz_streamp pStream, int level) { + return mz_deflateInit2(pStream, level, MZ_DEFLATED, + MZ_DEFAULT_WINDOW_BITS, 9, + MZ_DEFAULT_STRATEGY); +} + +int mz_deflateInit2(mz_streamp pStream, int level, int method, + int window_bits, int mem_level, int strategy) { + tdefl_compressor *pComp; + mz_uint comp_flags = TDEFL_COMPUTE_ADLER32 | + tdefl_create_comp_flags_from_zip_params( + level, window_bits, strategy); + + if (!pStream) + return MZ_STREAM_ERROR; + if ((method != MZ_DEFLATED) || + ((mem_level < 1) || (mem_level > 9)) || + ((window_bits != MZ_DEFAULT_WINDOW_BITS) && + (-window_bits != MZ_DEFAULT_WINDOW_BITS))) + return MZ_PARAM_ERROR; + + pStream->data_type = 0; + pStream->adler = MZ_ADLER32_INIT; + pStream->msg = NULL; + pStream->reserved = 0; + pStream->total_in = 0; + pStream->total_out = 0; + if (!pStream->zalloc) + pStream->zalloc = miniz_def_alloc_func; + if (!pStream->zfree) + pStream->zfree = miniz_def_free_func; + + pComp = (tdefl_compressor *) pStream->zalloc( + pStream->opaque, 1, sizeof(tdefl_compressor)); + if (!pComp) + return MZ_MEM_ERROR; + + pStream->state = (struct mz_internal_state *) pComp; + + if (tdefl_init(pComp, NULL, NULL, comp_flags) != + TDEFL_STATUS_OKAY) { + mz_deflateEnd(pStream); + return MZ_PARAM_ERROR; + } + + return MZ_OK; +} + +int mz_deflateReset(mz_streamp pStream) { + if ((!pStream) || (!pStream->state) || (!pStream->zalloc) || + (!pStream->zfree)) + return MZ_STREAM_ERROR; + pStream->total_in = pStream->total_out = 0; + tdefl_init((tdefl_compressor *) pStream->state, NULL, NULL, + ((tdefl_compressor *) pStream->state)->m_flags); + return MZ_OK; +} + +int mz_deflate(mz_streamp pStream, int flush) { + size_t in_bytes, out_bytes; + mz_ulong orig_total_in, orig_total_out; + int mz_status = MZ_OK; + + if ((!pStream) || (!pStream->state) || (flush < 0) || + (flush > MZ_FINISH) || (!pStream->next_out)) + return MZ_STREAM_ERROR; + if (!pStream->avail_out) + return MZ_BUF_ERROR; + + if (flush == MZ_PARTIAL_FLUSH) + flush = MZ_SYNC_FLUSH; + + if (((tdefl_compressor *) pStream->state)->m_prev_return_status == + TDEFL_STATUS_DONE) + return (flush == MZ_FINISH) ? MZ_STREAM_END : MZ_BUF_ERROR; + + orig_total_in = pStream->total_in; + orig_total_out = pStream->total_out; + for (;;) { + tdefl_status defl_status; + in_bytes = pStream->avail_in; + out_bytes = pStream->avail_out; + + defl_status = tdefl_compress((tdefl_compressor *) pStream->state, + pStream->next_in, &in_bytes, + pStream->next_out, &out_bytes, + (tdefl_flush) flush); + pStream->next_in += (mz_uint) in_bytes; + pStream->avail_in -= (mz_uint) in_bytes; + pStream->total_in += (mz_uint) in_bytes; + pStream->adler = tdefl_get_adler32( + (tdefl_compressor *) pStream->state); + + pStream->next_out += (mz_uint) out_bytes; + pStream->avail_out -= (mz_uint) out_bytes; + pStream->total_out += (mz_uint) out_bytes; + + if (defl_status < 0) { + mz_status = MZ_STREAM_ERROR; + break; + } else if (defl_status == TDEFL_STATUS_DONE) { + mz_status = MZ_STREAM_END; + break; + } else if (!pStream->avail_out) + break; + else if ((!pStream->avail_in) && (flush != MZ_FINISH)) { + if ((flush) || (pStream->total_in != orig_total_in) || + (pStream->total_out != orig_total_out)) + break; + return MZ_BUF_ERROR; /* Can't make forward progress without some + * input. + */ + } + } + return mz_status; +} + +int mz_deflateEnd(mz_streamp pStream) { + if (!pStream) + return MZ_STREAM_ERROR; + if (pStream->state) { + pStream->zfree(pStream->opaque, pStream->state); + pStream->state = NULL; + } + return MZ_OK; +} + +mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len) { + (void) pStream; + /* This is really over conservative. (And lame, but it's actually + * pretty tricky to compute a true upper bound given the way tdefl's + * blocking works.) */ + return MZ_MAX(128 + (source_len * 110) / 100, + 128 + source_len + + ((source_len / (31 * 1024)) + 1) * 5); +} + +int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len, + int level) { + int status; + mz_stream stream; + memset(&stream, 0, sizeof(stream)); + + /* In case mz_ulong is 64-bits (argh I hate longs). */ + if ((mz_uint64) (source_len | *pDest_len) > 0xFFFFFFFFU) + return MZ_PARAM_ERROR; + + stream.next_in = pSource; + stream.avail_in = (mz_uint32) source_len; + stream.next_out = pDest; + stream.avail_out = (mz_uint32) *pDest_len; + + status = mz_deflateInit(&stream, level); + if (status != MZ_OK) + return status; + + status = mz_deflate(&stream, MZ_FINISH); + if (status != MZ_STREAM_END) { + mz_deflateEnd(&stream); + return (status == MZ_OK) ? MZ_BUF_ERROR : status; + } + + *pDest_len = stream.total_out; + return mz_deflateEnd(&stream); +} + +int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len) { + return mz_compress2(pDest, pDest_len, pSource, source_len, + MZ_DEFAULT_COMPRESSION); +} + +mz_ulong mz_compressBound(mz_ulong source_len) { + return mz_deflateBound(NULL, source_len); +} + +# endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/ + +# ifndef MINIZ_NO_INFLATE_APIS + +typedef struct { + tinfl_decompressor m_decomp; + mz_uint m_dict_ofs, m_dict_avail, m_first_call, m_has_flushed; + int m_window_bits; + mz_uint8 m_dict[TINFL_LZ_DICT_SIZE]; + tinfl_status m_last_status; +} inflate_state; + +int mz_inflateInit2(mz_streamp pStream, int window_bits) { + inflate_state *pDecomp; + if (!pStream) + return MZ_STREAM_ERROR; + if ((window_bits != MZ_DEFAULT_WINDOW_BITS) && + (-window_bits != MZ_DEFAULT_WINDOW_BITS)) + return MZ_PARAM_ERROR; + + pStream->data_type = 0; + pStream->adler = 0; + pStream->msg = NULL; + pStream->total_in = 0; + pStream->total_out = 0; + pStream->reserved = 0; + if (!pStream->zalloc) + pStream->zalloc = miniz_def_alloc_func; + if (!pStream->zfree) + pStream->zfree = miniz_def_free_func; + + pDecomp = (inflate_state *) pStream->zalloc(pStream->opaque, 1, + sizeof(inflate_state)); + if (!pDecomp) + return MZ_MEM_ERROR; + + pStream->state = (struct mz_internal_state *) pDecomp; + + tinfl_init(&pDecomp->m_decomp); + pDecomp->m_dict_ofs = 0; + pDecomp->m_dict_avail = 0; + pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT; + pDecomp->m_first_call = 1; + pDecomp->m_has_flushed = 0; + pDecomp->m_window_bits = window_bits; + + return MZ_OK; +} + +int mz_inflateInit(mz_streamp pStream) { + return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS); +} + +int mz_inflateReset(mz_streamp pStream) { + inflate_state *pDecomp; + if (!pStream) + return MZ_STREAM_ERROR; + + pStream->data_type = 0; + pStream->adler = 0; + pStream->msg = NULL; + pStream->total_in = 0; + pStream->total_out = 0; + pStream->reserved = 0; + + pDecomp = (inflate_state *) pStream->state; + + tinfl_init(&pDecomp->m_decomp); + pDecomp->m_dict_ofs = 0; + pDecomp->m_dict_avail = 0; + pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT; + pDecomp->m_first_call = 1; + pDecomp->m_has_flushed = 0; + /* pDecomp->m_window_bits = window_bits */; + + return MZ_OK; +} + +int mz_inflate(mz_streamp pStream, int flush) { + inflate_state *pState; + mz_uint n, first_call, decomp_flags = TINFL_FLAG_COMPUTE_ADLER32; + size_t in_bytes, out_bytes, orig_avail_in; + tinfl_status status; + + if ((!pStream) || (!pStream->state)) + return MZ_STREAM_ERROR; + if (flush == MZ_PARTIAL_FLUSH) + flush = MZ_SYNC_FLUSH; + if ((flush) && (flush != MZ_SYNC_FLUSH) && (flush != MZ_FINISH)) + return MZ_STREAM_ERROR; + + pState = (inflate_state *) pStream->state; + if (pState->m_window_bits > 0) + decomp_flags |= TINFL_FLAG_PARSE_ZLIB_HEADER; + orig_avail_in = pStream->avail_in; + + first_call = pState->m_first_call; + pState->m_first_call = 0; + if (pState->m_last_status < 0) + return MZ_DATA_ERROR; + + if (pState->m_has_flushed && (flush != MZ_FINISH)) + return MZ_STREAM_ERROR; + pState->m_has_flushed |= (flush == MZ_FINISH); + + if ((flush == MZ_FINISH) && (first_call)) { + /* MZ_FINISH on the first call implies that the input and output + * buffers are large enough to hold the entire + * compressed/decompressed file. */ + decomp_flags |= TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF; + in_bytes = pStream->avail_in; + out_bytes = pStream->avail_out; + status = tinfl_decompress(&pState->m_decomp, pStream->next_in, + &in_bytes, pStream->next_out, + pStream->next_out, &out_bytes, + decomp_flags); + pState->m_last_status = status; + pStream->next_in += (mz_uint) in_bytes; + pStream->avail_in -= (mz_uint) in_bytes; + pStream->total_in += (mz_uint) in_bytes; + pStream->adler = tinfl_get_adler32(&pState->m_decomp); + pStream->next_out += (mz_uint) out_bytes; + pStream->avail_out -= (mz_uint) out_bytes; + pStream->total_out += (mz_uint) out_bytes; + + if (status < 0) + return MZ_DATA_ERROR; + else if (status != TINFL_STATUS_DONE) { + pState->m_last_status = TINFL_STATUS_FAILED; + return MZ_BUF_ERROR; + } + return MZ_STREAM_END; + } + /* flush != MZ_FINISH then we must assume there's more input. */ + if (flush != MZ_FINISH) + decomp_flags |= TINFL_FLAG_HAS_MORE_INPUT; + + if (pState->m_dict_avail) { + n = MZ_MIN(pState->m_dict_avail, pStream->avail_out); + memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n); + pStream->next_out += n; + pStream->avail_out -= n; + pStream->total_out += n; + pState->m_dict_avail -= n; + pState->m_dict_ofs = (pState->m_dict_ofs + n) & + (TINFL_LZ_DICT_SIZE - 1); + return ((pState->m_last_status == TINFL_STATUS_DONE) && + (!pState->m_dict_avail)) + ? MZ_STREAM_END + : MZ_OK; + } + + for (;;) { + in_bytes = pStream->avail_in; + out_bytes = TINFL_LZ_DICT_SIZE - pState->m_dict_ofs; + + status = tinfl_decompress(&pState->m_decomp, pStream->next_in, + &in_bytes, pState->m_dict, + pState->m_dict + pState->m_dict_ofs, + &out_bytes, decomp_flags); + pState->m_last_status = status; + + pStream->next_in += (mz_uint) in_bytes; + pStream->avail_in -= (mz_uint) in_bytes; + pStream->total_in += (mz_uint) in_bytes; + pStream->adler = tinfl_get_adler32(&pState->m_decomp); + + pState->m_dict_avail = (mz_uint) out_bytes; + + n = MZ_MIN(pState->m_dict_avail, pStream->avail_out); + memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n); + pStream->next_out += n; + pStream->avail_out -= n; + pStream->total_out += n; + pState->m_dict_avail -= n; + pState->m_dict_ofs = (pState->m_dict_ofs + n) & + (TINFL_LZ_DICT_SIZE - 1); + + if (status < 0) + return MZ_DATA_ERROR; /* Stream is corrupted (there could be + some uncompressed data left in the + output dictionary - oh well). */ + else if ((status == TINFL_STATUS_NEEDS_MORE_INPUT) && + (!orig_avail_in)) + return MZ_BUF_ERROR; /* Signal caller that we can't make forward + progress without supplying more input or + by setting flush to MZ_FINISH. */ + else if (flush == MZ_FINISH) { + /* The output buffer MUST be large to hold the remaining + * uncompressed data when flush==MZ_FINISH. */ + if (status == TINFL_STATUS_DONE) + return pState->m_dict_avail ? MZ_BUF_ERROR : MZ_STREAM_END; + /* status here must be TINFL_STATUS_HAS_MORE_OUTPUT, which means + * there's at least 1 more byte on the way. If there's no more + * room left in the output buffer then something is wrong. */ + else if (!pStream->avail_out) + return MZ_BUF_ERROR; + } else if ((status == TINFL_STATUS_DONE) || + (!pStream->avail_in) || (!pStream->avail_out) || + (pState->m_dict_avail)) + break; + } + + return ((status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) + ? MZ_STREAM_END + : MZ_OK; +} + +int mz_inflateEnd(mz_streamp pStream) { + if (!pStream) + return MZ_STREAM_ERROR; + if (pStream->state) { + pStream->zfree(pStream->opaque, pStream->state); + pStream->state = NULL; + } + return MZ_OK; +} +int mz_uncompress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, + mz_ulong *pSource_len) { + mz_stream stream; + int status; + memset(&stream, 0, sizeof(stream)); + + /* In case mz_ulong is 64-bits (argh I hate longs). */ + if ((mz_uint64) (*pSource_len | *pDest_len) > 0xFFFFFFFFU) + return MZ_PARAM_ERROR; + + stream.next_in = pSource; + stream.avail_in = (mz_uint32) *pSource_len; + stream.next_out = pDest; + stream.avail_out = (mz_uint32) *pDest_len; + + status = mz_inflateInit(&stream); + if (status != MZ_OK) + return status; + + status = mz_inflate(&stream, MZ_FINISH); + *pSource_len = *pSource_len - stream.avail_in; + if (status != MZ_STREAM_END) { + mz_inflateEnd(&stream); + return ((status == MZ_BUF_ERROR) && (!stream.avail_in)) + ? MZ_DATA_ERROR + : status; + } + *pDest_len = stream.total_out; + + return mz_inflateEnd(&stream); +} + +int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len) { + return mz_uncompress2(pDest, pDest_len, pSource, &source_len); +} + +# endif /*#ifndef MINIZ_NO_INFLATE_APIS*/ + +const char *mz_error(int err) { + static struct { + int m_err; + const char *m_pDesc; + } s_error_descs[] = { { MZ_OK, "" }, + { MZ_STREAM_END, "stream end" }, + { MZ_NEED_DICT, "need dictionary" }, + { MZ_ERRNO, "file error" }, + { MZ_STREAM_ERROR, "stream error" }, + { MZ_DATA_ERROR, "data error" }, + { MZ_MEM_ERROR, "out of memory" }, + { MZ_BUF_ERROR, "buf error" }, + { MZ_VERSION_ERROR, "version error" }, + { MZ_PARAM_ERROR, "parameter error" } }; + mz_uint i; + for (i = 0; i < sizeof(s_error_descs) / sizeof(s_error_descs[0]); + ++i) + if (s_error_descs[i].m_err == err) + return s_error_descs[i].m_pDesc; + return NULL; +} + +#endif /*MINIZ_NO_ZLIB_APIS */ + +#ifdef __cplusplus +} +#endif + +/* + This is free and unencumbered software released into the public + domain. + + Anyone is free to copy, modify, publish, use, compile, sell, or + distribute this software, either in source code form or as a + compiled binary, for any purpose, commercial or non-commercial, and + by any means. + + In jurisdictions that recognize copyright laws, the author or + authors of this software dedicate any and all copyright interest in + the software to the public domain. We make this dedication for the + benefit of the public at large and to the detriment of our heirs and + successors. We intend this dedication to be an overt act of + relinquishment in perpetuity of all present and future rights to + this software under copyright law. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY + CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + For more information, please refer to <http://unlicense.org/> +*/ diff --git a/source/kit/miniz/miniz.h b/source/kit/miniz/miniz.h new file mode 100644 index 0000000..a80c389 --- /dev/null +++ b/source/kit/miniz/miniz.h @@ -0,0 +1,658 @@ +/* miniz.c 3.0.2 - public domain deflate/inflate, zlib-subset, ZIP + reading/writing/appending, PNG writing See "unlicense" statement at + the end of this file. Rich Geldreich <richgel99@gmail.com>, last + updated Oct. 13, 2013 Implements RFC 1950: + http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: + http://www.ietf.org/rfc/rfc1951.txt + + Most API's defined in miniz.c are optional. For example, to disable + the archive related functions just define MINIZ_NO_ARCHIVE_APIS, or + to get rid of all stdio usage define MINIZ_NO_STDIO (see the list + below for more macros). + + * Low-level Deflate/Inflate implementation notes: + + Compression: Use the "tdefl" API's. The compressor supports raw, + static, and dynamic blocks, lazy or greedy parsing, match length + filtering, RLE-only, and Huffman-only streams. It performs and + compresses approximately as well as zlib. + + Decompression: Use the "tinfl" API's. The entire decompressor is + implemented as a single function coroutine: see tinfl_decompress(). + It supports decompression into a 32KB (or larger power of 2) + wrapping buffer, or into a memory block large enough to hold the + entire file. + + The low-level tdefl/tinfl API's do not make any use of dynamic + memory allocation. + + * zlib-style API notes: + + miniz.c implements a fairly large subset of zlib. There's enough + functionality present for it to be a drop-in zlib replacement in + many apps: The z_stream struct, optional memory allocation + callbacks + deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound + inflateInit/inflateInit2/inflate/inflateReset/inflateEnd + compress, compress2, compressBound, uncompress + CRC-32, Adler-32 - Using modern, minimal code size, CPU cache + friendly routines. Supports raw deflate streams or standard zlib + streams with adler-32 checking. + + Limitations: + The callback API's are not implemented yet. No support for gzip + headers or zlib static dictionaries. I've tried to closely emulate + zlib's various flavors of stream flushing and return status codes, + but there are no guarantees that miniz.c pulls this off perfectly. + + * PNG writing: See the tdefl_write_image_to_png_file_in_memory() + function, originally written by Alex Evans. Supports 1-4 + bytes/pixel images. + + * ZIP archive API notes: + + The ZIP archive API's where designed with simplicity and + efficiency in mind, with just enough abstraction to get the job + done with minimal fuss. There are simple API's to retrieve file + information, read files from existing archives, create new + archives, append new files to existing archives, or clone archive + data from one archive to another. It supports archives located in + memory or the heap, on disk (using stdio.h), or you can specify + custom file read/write callbacks. + + - Archive reading: Just call this function to read a single file + from a disk archive: + + void *mz_zip_extract_archive_file_to_heap(const char + *pZip_filename, const char *pArchive_name, size_t *pSize, mz_uint + zip_flags); + + For more complex cases, use the "mz_zip_reader" functions. Upon + opening an archive, the entire central directory is located and + read as-is into memory, and subsequent file access only occurs when + reading individual files. + + - Archives file scanning: The simple way is to use this function + to scan a loaded archive for a specific file: + + int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char + *pName, const char *pComment, mz_uint flags); + + The locate operation can optionally check file comments too, + which (as one example) can be used to identify multiple versions of + the same file in an archive. This function uses a simple linear + search through the central directory, so it's not very fast. + + Alternately, you can iterate through all the files in an archive + (using mz_zip_reader_get_num_files()) and retrieve detailed info on + each file by calling mz_zip_reader_file_stat(). + + - Archive creation: Use the "mz_zip_writer" functions. The ZIP + writer immediately writes compressed file data to disk and builds + an exact image of the central directory in memory. The central + directory image is written all at once at the end of the archive + file when the archive is finalized. + + The archive writer can optionally align each file's local header + and file data to any power of 2 alignment, which can be useful when + the archive will be read from optical media. Also, the writer + supports placing arbitrary data blobs at the very beginning of ZIP + archives. Archives written using either feature are still readable + by any ZIP tool. + + - Archive appending: The simple way to add a single file to an + archive is to call this function: + + mz_bool mz_zip_add_mem_to_archive_file_in_place(const char + *pZip_filename, const char *pArchive_name, const void *pBuf, size_t + buf_size, const void *pComment, mz_uint16 comment_size, mz_uint + level_and_flags); + + The archive will be created if it doesn't already exist, + otherwise it'll be appended to. Note the appending is done in-place + and is not an atomic operation, so if something goes wrong during + the operation it's possible the archive could be left without a + central directory (although the local file headers and file data + will be fine, so the archive will be recoverable). + + For more complex archive modification scenarios: + 1. The safest way is to use a mz_zip_reader to read the existing + archive, cloning only those bits you want to preserve into a new + archive using using the mz_zip_writer_add_from_zip_reader() + function (which compiles the compressed file data as-is). When + you're done, delete the old archive and rename the newly written + archive, and you're done. This is safe but requires a bunch of + temporary disk space or heap memory. + + 2. Or, you can convert an mz_zip_reader in-place to an + mz_zip_writer using mz_zip_writer_init_from_reader(), append new + files as needed, then finalize the archive which will write an + updated central directory to the original archive. (This is + basically what mz_zip_add_mem_to_archive_file_in_place() does.) + There's a possibility that the archive's central directory could be + lost with this method if anything goes wrong, though. + + - ZIP archive support limitations: + No spanning support. Extraction functions can only handle + unencrypted, stored or deflated files. Requires streams capable of + seeking. + + * This is a header file library, like stb_image.c. To get only a + header file, either cut and paste the below header, or create + miniz.h, #define MINIZ_HEADER_FILE_ONLY, and then include miniz.c + from it. + + * Important: For best perf. be sure to customize the below macros + for your target platform: #define + MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 #define MINIZ_LITTLE_ENDIAN + 1 #define MINIZ_HAS_64BIT_REGISTERS 1 + + * On platforms using glibc, Be sure to "#define _LARGEFILE64_SOURCE + 1" before including miniz.c to ensure miniz uses the 64-bit + variants: fopen64(), stat64(), etc. Otherwise you won't be able to + process large files (i.e. 32-bit stat() fails for me on files > + 0x7FFFFFFF bytes). +*/ + +#ifndef KIT_MINIZ_MINIZ_H +#define KIT_MINIZ_MINIZ_H + +/* Defines to completely disable specific portions of miniz.c: + If all macros here are defined the only functionality remaining + will be CRC-32 and adler-32. */ + +/* Define MINIZ_NO_STDIO to disable all usage and any functions which + * rely on stdio for file I/O. */ +/*#define MINIZ_NO_STDIO */ + +/* If MINIZ_NO_TIME is specified then the ZIP archive functions will + * not be able to get the current time, or */ +/* get/set file times, and the C run-time funcs that get/set times + * won't be called. */ +/* The current downside is the times written to your archives will be + * from 1979. */ +/*#define MINIZ_NO_TIME */ + +/* Define MINIZ_NO_DEFLATE_APIS to disable all compression API's. */ +/*#define MINIZ_NO_DEFLATE_APIS */ + +/* Define MINIZ_NO_INFLATE_APIS to disable all decompression API's. */ +/*#define MINIZ_NO_INFLATE_APIS */ + +/* Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. */ +/*#define MINIZ_NO_ARCHIVE_APIS */ + +/* Define MINIZ_NO_ARCHIVE_WRITING_APIS to disable all writing related + * ZIP archive API's. */ +/*#define MINIZ_NO_ARCHIVE_WRITING_APIS */ + +/* Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style + * compression/decompression API's. */ +/*#define MINIZ_NO_ZLIB_APIS */ + +/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to + * prevent conflicts against stock zlib. */ +/*#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES */ + +/* Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and + realloc. Note if MINIZ_NO_MALLOC is defined then the user must + always provide custom user alloc/free/realloc callbacks to the zlib + and archive API's, and a few stand-alone helper API's which don't + provide custom user + functions (such as tdefl_compress_mem_to_heap() and + tinfl_decompress_mem_to_heap()) won't work. */ +/*#define MINIZ_NO_MALLOC */ + +#ifdef MINIZ_NO_INFLATE_APIS +# define MINIZ_NO_ARCHIVE_APIS +#endif + +#ifdef MINIZ_NO_DEFLATE_APIS +# define MINIZ_NO_ARCHIVE_WRITING_APIS +#endif + +#if defined(__TINYC__) && (defined(__linux) || defined(__linux__)) +/* TODO: Work around "error: include file 'sys\utime.h' when compiling + * with tcc on Linux */ +# define MINIZ_NO_TIME +#endif + +#include "miniz_common.h" + +#include <stddef.h> + +#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS) +# include <time.h> +#endif + +#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || \ + defined(__i386) || defined(__i486__) || defined(__i486) || \ + defined(i386) || defined(__ia64__) || defined(__x86_64__) +/* MINIZ_X86_OR_X64_CPU is only used to help set the below macros. */ +# define MINIZ_X86_OR_X64_CPU 1 +#else +# define MINIZ_X86_OR_X64_CPU 0 +#endif + +/* Set MINIZ_LITTLE_ENDIAN only if not set */ +#if !defined(MINIZ_LITTLE_ENDIAN) +# if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) + +# if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) +/* Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. */ +# define MINIZ_LITTLE_ENDIAN 1 +# else +# define MINIZ_LITTLE_ENDIAN 0 +# endif + +# else + +# if MINIZ_X86_OR_X64_CPU +# define MINIZ_LITTLE_ENDIAN 1 +# else +# define MINIZ_LITTLE_ENDIAN 0 +# endif + +# endif +#endif + +/* Using unaligned loads and stores causes errors when using UBSan */ +#if defined(__has_feature) +# if __has_feature(undefined_behavior_sanitizer) +# define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 +# endif +#endif + +/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES only if not set */ +#if !defined(MINIZ_USE_UNALIGNED_LOADS_AND_STORES) +# if MINIZ_X86_OR_X64_CPU +/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit + * efficient integer loads and stores from unaligned addresses. */ +# define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 +# define MINIZ_UNALIGNED_USE_MEMCPY +# else +# define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 +# endif +#endif + +#if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || \ + defined(_LP64) || defined(__LP64__) || defined(__ia64__) || \ + defined(__x86_64__) +/* Set MINIZ_HAS_64BIT_REGISTERS to 1 if operations on 64-bit integers + * are reasonably fast (and don't involve compiler generated calls to + * helper functions). */ +# define MINIZ_HAS_64BIT_REGISTERS 1 +#else +# define MINIZ_HAS_64BIT_REGISTERS 0 +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* ------------------- zlib-style API Definitions. */ + +/* For more compatibility with zlib, miniz.c uses unsigned long for + * some parameters/struct members. Beware: mz_ulong can be either 32 + * or 64-bits! */ +typedef unsigned long mz_ulong; + +/* mz_free() internally uses the MZ_FREE() macro (which by default + * calls free() unless you've modified the MZ_MALLOC macro) to release + * a block allocated from the heap. */ +void mz_free(void *p); + +#define MZ_ADLER32_INIT (1) +/* mz_adler32() returns the initial adler-32 value to use when called + * with ptr==NULL. */ +mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, + size_t buf_len); + +#define MZ_CRC32_INIT (0) +/* mz_crc32() returns the initial CRC-32 value to use when called with + * ptr==NULL. */ +mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, + size_t buf_len); + +/* Compression strategies. */ +enum { + MZ_DEFAULT_STRATEGY = 0, + MZ_FILTERED = 1, + MZ_HUFFMAN_ONLY = 2, + MZ_RLE = 3, + MZ_FIXED = 4 +}; + +/* Method */ +#define MZ_DEFLATED 8 + +/* Compression levels: 0-9 are the standard zlib-style levels, 10 is + * best possible compression (not zlib compatible, and may be very + * slow), MZ_DEFAULT_COMPRESSION=MZ_DEFAULT_LEVEL. */ +enum { + MZ_NO_COMPRESSION = 0, + MZ_BEST_SPEED = 1, + MZ_BEST_COMPRESSION = 9, + MZ_UBER_COMPRESSION = 10, + MZ_DEFAULT_LEVEL = 6, + MZ_DEFAULT_COMPRESSION = -1 +}; + +#define MZ_VERSION "11.0.2" +#define MZ_VERNUM 0xB002 +#define MZ_VER_MAJOR 11 +#define MZ_VER_MINOR 2 +#define MZ_VER_REVISION 0 +#define MZ_VER_SUBREVISION 0 + +#ifndef MINIZ_NO_ZLIB_APIS + +/* Flush values. For typical usage you only need MZ_NO_FLUSH and + * MZ_FINISH. The other values are for advanced use (refer to the zlib + * docs). */ +enum { + MZ_NO_FLUSH = 0, + MZ_PARTIAL_FLUSH = 1, + MZ_SYNC_FLUSH = 2, + MZ_FULL_FLUSH = 3, + MZ_FINISH = 4, + MZ_BLOCK = 5 +}; + +/* Return status codes. MZ_PARAM_ERROR is non-standard. */ +enum { + MZ_OK = 0, + MZ_STREAM_END = 1, + MZ_NEED_DICT = 2, + MZ_ERRNO = -1, + MZ_STREAM_ERROR = -2, + MZ_DATA_ERROR = -3, + MZ_MEM_ERROR = -4, + MZ_BUF_ERROR = -5, + MZ_VERSION_ERROR = -6, + MZ_PARAM_ERROR = -10000 +}; + +/* Window bits */ +# define MZ_DEFAULT_WINDOW_BITS 15 + +struct mz_internal_state; + +/* Compression/decompression stream struct. */ +typedef struct mz_stream_s { + const unsigned char *next_in; /* pointer to next byte to read */ + unsigned int avail_in; /* number of bytes available at next_in */ + mz_ulong total_in; /* total number of bytes consumed so far */ + + unsigned char *next_out; /* pointer to next byte to write */ + unsigned int + avail_out; /* number of bytes that can be written to next_out */ + mz_ulong total_out; /* total number of bytes produced so far */ + + char *msg; /* error msg (unused) */ + struct mz_internal_state + *state; /* internal state, allocated by zalloc/zfree */ + + mz_alloc_func zalloc; /* optional heap allocation function (defaults + to malloc) */ + mz_free_func + zfree; /* optional heap free function (defaults to free) */ + void *opaque; /* heap alloc function user pointer */ + + int data_type; /* data_type (unused) */ + mz_ulong adler; /* adler32 of the source or uncompressed data */ + mz_ulong reserved; /* not used */ +} mz_stream; + +typedef mz_stream *mz_streamp; + +/* Returns the version string of miniz.c. */ +const char *mz_version(void); + +# ifndef MINIZ_NO_DEFLATE_APIS + +/* mz_deflateInit() initializes a compressor with default options: */ +/* Parameters: */ +/* pStream must point to an initialized mz_stream struct. */ +/* level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. */ +/* level 1 enables a specially optimized compression function that's + * been optimized purely for performance, not ratio. */ +/* (This special func. is currently only enabled when + * MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are + * defined.) */ +/* Return values: */ +/* MZ_OK on success. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +/* MZ_PARAM_ERROR if the input parameters are bogus. */ +/* MZ_MEM_ERROR on out of memory. */ +int mz_deflateInit(mz_streamp pStream, int level); + +/* mz_deflateInit2() is like mz_deflate(), except with more control: + */ +/* Additional parameters: */ +/* method must be MZ_DEFLATED */ +/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to wrap the deflate + * stream with zlib header/adler-32 footer) or -MZ_DEFAULT_WINDOW_BITS + * (raw deflate/no header or footer) */ +/* mem_level must be between [1, 9] (it's checked but ignored by + * miniz.c) */ +int mz_deflateInit2(mz_streamp pStream, int level, int method, + int window_bits, int mem_level, int strategy); + +/* Quickly resets a compressor without having to reallocate anything. + * Same as calling mz_deflateEnd() followed by + * mz_deflateInit()/mz_deflateInit2(). */ +int mz_deflateReset(mz_streamp pStream); + +/* mz_deflate() compresses the input to output, consuming as much of + * the input and producing as much output as possible. */ +/* Parameters: */ +/* pStream is the stream to read from and write to. You must + * initialize/update the next_in, avail_in, next_out, and avail_out + * members. */ +/* flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, + * MZ_FULL_FLUSH, or MZ_FINISH. */ +/* Return values: */ +/* MZ_OK on success (when flushing, or if more input is needed but + * not available, and/or there's more output to be written but the + * output buffer is full). */ +/* MZ_STREAM_END if all input has been consumed and all output bytes + * have been written. Don't call mz_deflate() on the stream anymore. + */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +/* MZ_PARAM_ERROR if one of the parameters is invalid. */ +/* MZ_BUF_ERROR if no forward progress is possible because the input + * and/or output buffers are empty. (Fill up the input buffer or free + * up some output space and try again.) */ +int mz_deflate(mz_streamp pStream, int flush); + +/* mz_deflateEnd() deinitializes a compressor: */ +/* Return values: */ +/* MZ_OK on success. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +int mz_deflateEnd(mz_streamp pStream); + +/* mz_deflateBound() returns a (very) conservative upper bound on the + * amount of data that could be generated by deflate(), assuming flush + * is set to only MZ_NO_FLUSH or MZ_FINISH. */ +mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len); + +/* Single-call compression functions mz_compress() and mz_compress2(): + */ +/* Returns MZ_OK on success, or one of the error codes from + * mz_deflate() on failure. */ +int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len); +int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len, + int level); + +/* mz_compressBound() returns a (very) conservative upper bound on the + * amount of data that could be generated by calling mz_compress(). */ +mz_ulong mz_compressBound(mz_ulong source_len); + +# endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/ + +# ifndef MINIZ_NO_INFLATE_APIS + +/* Initializes a decompressor. */ +int mz_inflateInit(mz_streamp pStream); + +/* mz_inflateInit2() is like mz_inflateInit() with an additional + * option that controls the window size and whether or not the stream + * has been wrapped with a zlib header/footer: */ +/* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib + * header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */ +int mz_inflateInit2(mz_streamp pStream, int window_bits); + +/* Quickly resets a compressor without having to reallocate anything. + * Same as calling mz_inflateEnd() followed by + * mz_inflateInit()/mz_inflateInit2(). */ +int mz_inflateReset(mz_streamp pStream); + +/* Decompresses the input stream to the output, consuming only as much + * of the input as needed, and writing as much to the output as + * possible. */ +/* Parameters: */ +/* pStream is the stream to read from and write to. You must + * initialize/update the next_in, avail_in, next_out, and avail_out + * members. */ +/* flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. */ +/* On the first call, if flush is MZ_FINISH it's assumed the input + * and output buffers are both sized large enough to decompress the + * entire stream in a single call (this is slightly faster). */ +/* MZ_FINISH implies that there are no more source bytes available + * beside what's already in the input buffer, and that the output + * buffer is large enough to hold the rest of the decompressed data. + */ +/* Return values: */ +/* MZ_OK on success. Either more input is needed but not available, + * and/or there's more output to be written but the output buffer is + * full. */ +/* MZ_STREAM_END if all needed input has been consumed and all + * output bytes have been written. For zlib streams, the adler-32 of + * the decompressed data has also been verified. */ +/* MZ_STREAM_ERROR if the stream is bogus. */ +/* MZ_DATA_ERROR if the deflate stream is invalid. */ +/* MZ_PARAM_ERROR if one of the parameters is invalid. */ +/* MZ_BUF_ERROR if no forward progress is possible because the input + * buffer is empty but the inflater needs more input to continue, or + * if the output buffer is not large enough. Call mz_inflate() again + */ +/* with more input data, or with more room in the output buffer + * (except when using single call decompression, described above). */ +int mz_inflate(mz_streamp pStream, int flush); + +/* Deinitializes a decompressor. */ +int mz_inflateEnd(mz_streamp pStream); + +/* Single-call decompression. */ +/* Returns MZ_OK on success, or one of the error codes from + * mz_inflate() on failure. */ +int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, mz_ulong source_len); +int mz_uncompress2(unsigned char *pDest, mz_ulong *pDest_len, + const unsigned char *pSource, + mz_ulong *pSource_len); +# endif /*#ifndef MINIZ_NO_INFLATE_APIS*/ + +/* Returns a string description of the specified error code, or NULL + * if the error code is invalid. */ +const char *mz_error(int err); + +/* Redefine zlib-compatible names to miniz equivalents, so miniz.c can + * be used as a drop-in replacement for the subset of zlib that + * miniz.c supports. */ +/* Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility + * if you use zlib in the same project. */ +# ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES +typedef unsigned char Byte; +typedef unsigned int uInt; +typedef mz_ulong uLong; +typedef Byte Bytef; +typedef uInt uIntf; +typedef char charf; +typedef int intf; +typedef void *voidpf; +typedef uLong uLongf; +typedef void *voidp; +typedef void *const voidpc; +# define Z_NULL 0 +# define Z_NO_FLUSH MZ_NO_FLUSH +# define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH +# define Z_SYNC_FLUSH MZ_SYNC_FLUSH +# define Z_FULL_FLUSH MZ_FULL_FLUSH +# define Z_FINISH MZ_FINISH +# define Z_BLOCK MZ_BLOCK +# define Z_OK MZ_OK +# define Z_STREAM_END MZ_STREAM_END +# define Z_NEED_DICT MZ_NEED_DICT +# define Z_ERRNO MZ_ERRNO +# define Z_STREAM_ERROR MZ_STREAM_ERROR +# define Z_DATA_ERROR MZ_DATA_ERROR +# define Z_MEM_ERROR MZ_MEM_ERROR +# define Z_BUF_ERROR MZ_BUF_ERROR +# define Z_VERSION_ERROR MZ_VERSION_ERROR +# define Z_PARAM_ERROR MZ_PARAM_ERROR +# define Z_NO_COMPRESSION MZ_NO_COMPRESSION +# define Z_BEST_SPEED MZ_BEST_SPEED +# define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION +# define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION +# define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY +# define Z_FILTERED MZ_FILTERED +# define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY +# define Z_RLE MZ_RLE +# define Z_FIXED MZ_FIXED +# define Z_DEFLATED MZ_DEFLATED +# define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS +# define alloc_func mz_alloc_func +# define free_func mz_free_func +# define internal_state mz_internal_state +# define z_stream mz_stream + +# ifndef MINIZ_NO_DEFLATE_APIS +# define deflateInit mz_deflateInit +# define deflateInit2 mz_deflateInit2 +# define deflateReset mz_deflateReset +# define deflate mz_deflate +# define deflateEnd mz_deflateEnd +# define deflateBound mz_deflateBound +# define compress mz_compress +# define compress2 mz_compress2 +# define compressBound mz_compressBound +# endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/ + +# ifndef MINIZ_NO_INFLATE_APIS +# define inflateInit mz_inflateInit +# define inflateInit2 mz_inflateInit2 +# define inflateReset mz_inflateReset +# define inflate mz_inflate +# define inflateEnd mz_inflateEnd +# define uncompress mz_uncompress +# define uncompress2 mz_uncompress2 +# endif /*#ifndef MINIZ_NO_INFLATE_APIS*/ + +# define crc32 mz_crc32 +# define adler32 mz_adler32 +# define MAX_WBITS 15 +# define MAX_MEM_LEVEL 9 +# define zError mz_error +# define ZLIB_VERSION MZ_VERSION +# define ZLIB_VERNUM MZ_VERNUM +# define ZLIB_VER_MAJOR MZ_VER_MAJOR +# define ZLIB_VER_MINOR MZ_VER_MINOR +# define ZLIB_VER_REVISION MZ_VER_REVISION +# define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION +# define zlibVersion mz_version +# define zlib_version mz_version() +# endif /* #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES */ + +#endif /* MINIZ_NO_ZLIB_APIS */ + +#ifdef __cplusplus +} +#endif + +#include "miniz_zip.h" + +#endif diff --git a/source/kit/miniz/miniz_common.h b/source/kit/miniz/miniz_common.h new file mode 100644 index 0000000..26306f3 --- /dev/null +++ b/source/kit/miniz/miniz_common.h @@ -0,0 +1,122 @@ +#ifndef KIT_MINIZ_MINIZ_COMMON_H +#define KIT_MINIZ_MINIZ_COMMON_H + +#ifndef _GNU_SOURCE +# define _GNU_SOURCE +#endif + +#include <assert.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> + +/* ------------------- Types and macros */ +typedef unsigned char mz_uint8; +typedef signed short mz_int16; +typedef unsigned short mz_uint16; +typedef unsigned int mz_uint32; +typedef unsigned int mz_uint; +typedef int64_t mz_int64; +typedef uint64_t mz_uint64; +typedef int mz_bool; + +#define MZ_FALSE (0) +#define MZ_TRUE (1) + +/* Works around MSVC's spammy "warning C4127: conditional expression + * is constant" message. */ +#ifdef _MSC_VER +# define MZ_MACRO_END while (0, 0) +#else +# define MZ_MACRO_END while (0) +#endif + +#ifdef MINIZ_NO_STDIO +# define MZ_FILE void * +#else +# include <stdio.h> +# define MZ_FILE FILE +#endif /* #ifdef MINIZ_NO_STDIO */ + +#ifdef MINIZ_NO_TIME +typedef struct mz_dummy_time_t_tag { + mz_uint32 m_dummy1; + mz_uint32 m_dummy2; +} mz_dummy_time_t; +# define MZ_TIME_T mz_dummy_time_t +#else +# define MZ_TIME_T time_t +#endif + +#define MZ_ASSERT(x) assert(x) + +#ifdef MINIZ_NO_MALLOC +# define MZ_MALLOC(x) NULL +# define MZ_FREE(x) (void) x, ((void) 0) +# define MZ_REALLOC(p, x) NULL +#else +# define MZ_MALLOC(x) malloc(x) +# define MZ_FREE(x) free(x) +# define MZ_REALLOC(p, x) realloc(p, x) +#endif + +#define MZ_MAX(a, b) (((a) > (b)) ? (a) : (b)) +#define MZ_MIN(a, b) (((a) < (b)) ? (a) : (b)) +#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj)) +#define MZ_CLEAR_ARR(obj) memset((obj), 0, sizeof(obj)) +#define MZ_CLEAR_PTR(obj) memset((obj), 0, sizeof(*obj)) + +#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN +# define MZ_READ_LE16(p) *((const mz_uint16 *) (p)) +# define MZ_READ_LE32(p) *((const mz_uint32 *) (p)) +#else +# define MZ_READ_LE16(p) \ + ((mz_uint32) (((const mz_uint8 *) (p))[0]) | \ + ((mz_uint32) (((const mz_uint8 *) (p))[1]) << 8U)) +# define MZ_READ_LE32(p) \ + ((mz_uint32) (((const mz_uint8 *) (p))[0]) | \ + ((mz_uint32) (((const mz_uint8 *) (p))[1]) << 8U) | \ + ((mz_uint32) (((const mz_uint8 *) (p))[2]) << 16U) | \ + ((mz_uint32) (((const mz_uint8 *) (p))[3]) << 24U)) +#endif + +#define MZ_READ_LE64(p) \ + (((mz_uint64) MZ_READ_LE32(p)) | \ + (((mz_uint64) MZ_READ_LE32((const mz_uint8 *) (p) + \ + sizeof(mz_uint32))) \ + << 32U)) + +#ifdef _MSC_VER +# define MZ_FORCEINLINE __forceinline +#elif defined(__GNUC__) +# define MZ_FORCEINLINE __inline__ __attribute__((__always_inline__)) +#else +# define MZ_FORCEINLINE inline +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* Heap allocation callbacks. +Note that mz_alloc_func parameter types purposely differ from zlib's: +items/size is size_t, not unsigned long. */ +typedef void *(*mz_alloc_func)(void *opaque, size_t items, + size_t size); +typedef void (*mz_free_func)(void *opaque, void *address); +typedef void *(*mz_realloc_func)(void *opaque, void *address, + size_t items, size_t size); + +void *miniz_def_alloc_func(void *opaque, size_t items, size_t size); +void miniz_def_free_func(void *opaque, void *address); +void *miniz_def_realloc_func(void *opaque, void *address, + size_t items, size_t size); + +#define MZ_UINT16_MAX (0xFFFFU) +#define MZ_UINT32_MAX (0xFFFFFFFFU) + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/source/kit/miniz/miniz_tdef.c b/source/kit/miniz/miniz_tdef.c new file mode 100644 index 0000000..5220466 --- /dev/null +++ b/source/kit/miniz/miniz_tdef.c @@ -0,0 +1,1792 @@ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person + *obtaining a copy of this software and associated documentation files + *(the "Software"), to deal in the Software without restriction, + *including without limitation the rights to use, copy, modify, merge, + *publish, distribute, sublicense, and/or sell copies of the Software, + *and to permit persons to whom the Software is furnished to do so, + *subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + *included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + *NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + *BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + *ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + *CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + *SOFTWARE. + * + **************************************************************************/ + +#include "miniz.h" + +#ifndef MINIZ_NO_DEFLATE_APIS + +# ifdef __cplusplus +extern "C" { +# endif + +/* ------------------- Low-level Compression (independent from all + * decompression API's) */ + +/* Purposely making these tables static for faster init and thread + * safety. */ +static const mz_uint16 s_tdefl_len_sym[256] = { + 257, 258, 259, 260, 261, 262, 263, 264, 265, 265, 266, 266, 267, + 267, 268, 268, 269, 269, 269, 269, 270, 270, 270, 270, 271, 271, + 271, 271, 272, 272, 272, 272, 273, 273, 273, 273, 273, 273, 273, + 273, 274, 274, 274, 274, 274, 274, 274, 274, 275, 275, 275, 275, + 275, 275, 275, 275, 276, 276, 276, 276, 276, 276, 276, 276, 277, + 277, 277, 277, 277, 277, 277, 277, 277, 277, 277, 277, 277, 277, + 277, 277, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, 278, + 278, 278, 278, 278, 278, 279, 279, 279, 279, 279, 279, 279, 279, + 279, 279, 279, 279, 279, 279, 279, 279, 280, 280, 280, 280, 280, + 280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 280, 281, 281, + 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, + 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, 281, + 281, 281, 281, 281, 282, 282, 282, 282, 282, 282, 282, 282, 282, + 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, + 282, 282, 282, 282, 282, 282, 282, 282, 282, 282, 283, 283, 283, + 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, + 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, + 283, 283, 283, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, + 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, 284, + 284, 284, 284, 284, 284, 284, 284, 284, 285 +}; + +static const mz_uint8 s_tdefl_len_extra[256] = { + 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0 +}; + +static const mz_uint8 s_tdefl_small_dist_sym[512] = { + 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, + 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, + 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, + 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, + 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, + 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, + 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, + 17, 17 +}; + +static const mz_uint8 s_tdefl_small_dist_extra[512] = { + 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, + 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, + 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, + 7, 7, 7, 7, 7, 7 +}; + +static const mz_uint8 s_tdefl_large_dist_sym[128] = { + 0, 0, 18, 19, 20, 20, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, + 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, + 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, + 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, + 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, + 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, + 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, + 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29 +}; + +static const mz_uint8 s_tdefl_large_dist_extra[128] = { + 0, 0, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, + 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, + 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13 +}; + +/* Radix sorts tdefl_sym_freq[] array by 16-bit key m_key. Returns ptr + * to sorted values. */ +typedef struct { + mz_uint16 m_key, m_sym_index; +} tdefl_sym_freq; +static tdefl_sym_freq *tdefl_radix_sort_syms(mz_uint num_syms, + tdefl_sym_freq *pSyms0, + tdefl_sym_freq *pSyms1) { + mz_uint32 total_passes = 2, pass_shift, pass, i, hist[256 * 2]; + tdefl_sym_freq *pCur_syms = pSyms0, *pNew_syms = pSyms1; + MZ_CLEAR_ARR(hist); + for (i = 0; i < num_syms; i++) { + mz_uint freq = pSyms0[i].m_key; + hist[freq & 0xFF]++; + hist[256 + ((freq >> 8) & 0xFF)]++; + } + while ((total_passes > 1) && + (num_syms == hist[(total_passes - 1) * 256])) + total_passes--; + for (pass_shift = 0, pass = 0; pass < total_passes; + pass++, pass_shift += 8) { + const mz_uint32 *pHist = &hist[pass << 8]; + mz_uint offsets[256], cur_ofs = 0; + for (i = 0; i < 256; i++) { + offsets[i] = cur_ofs; + cur_ofs += pHist[i]; + } + for (i = 0; i < num_syms; i++) + pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & + 0xFF]++] = pCur_syms[i]; + { + tdefl_sym_freq *t = pCur_syms; + pCur_syms = pNew_syms; + pNew_syms = t; + } + } + return pCur_syms; +} + +/* tdefl_calculate_minimum_redundancy() originally written by: + * Alistair Moffat, alistair@cs.mu.oz.au, Jyrki Katajainen, + * jyrki@diku.dk, November 1996. */ +static void tdefl_calculate_minimum_redundancy(tdefl_sym_freq *A, + int n) { + int root, leaf, next, avbl, used, dpth; + if (n == 0) + return; + else if (n == 1) { + A[0].m_key = 1; + return; + } + A[0].m_key += A[1].m_key; + root = 0; + leaf = 2; + for (next = 1; next < n - 1; next++) { + if (leaf >= n || A[root].m_key < A[leaf].m_key) { + A[next].m_key = A[root].m_key; + A[root++].m_key = (mz_uint16) next; + } else + A[next].m_key = A[leaf++].m_key; + if (leaf >= n || (root < next && A[root].m_key < A[leaf].m_key)) { + A[next].m_key = (mz_uint16) (A[next].m_key + A[root].m_key); + A[root++].m_key = (mz_uint16) next; + } else + A[next].m_key = (mz_uint16) (A[next].m_key + A[leaf++].m_key); + } + A[n - 2].m_key = 0; + for (next = n - 3; next >= 0; next--) + A[next].m_key = A[A[next].m_key].m_key + 1; + avbl = 1; + used = dpth = 0; + root = n - 2; + next = n - 1; + while (avbl > 0) { + while (root >= 0 && (int) A[root].m_key == dpth) { + used++; + root--; + } + while (avbl > used) { + A[next--].m_key = (mz_uint16) (dpth); + avbl--; + } + avbl = 2 * used; + dpth++; + used = 0; + } +} + +/* Limits canonical Huffman code table's max code size. */ +enum { TDEFL_MAX_SUPPORTED_HUFF_CODESIZE = 32 }; +static void tdefl_huffman_enforce_max_code_size(int *pNum_codes, + int code_list_len, + int max_code_size) { + int i; + mz_uint32 total = 0; + if (code_list_len <= 1) + return; + for (i = max_code_size + 1; i <= TDEFL_MAX_SUPPORTED_HUFF_CODESIZE; + i++) + pNum_codes[max_code_size] += pNum_codes[i]; + for (i = max_code_size; i > 0; i--) + total += (((mz_uint32) pNum_codes[i]) << (max_code_size - i)); + while (total != (1UL << max_code_size)) { + pNum_codes[max_code_size]--; + for (i = max_code_size - 1; i > 0; i--) + if (pNum_codes[i]) { + pNum_codes[i]--; + pNum_codes[i + 1] += 2; + break; + } + total--; + } +} + +static void tdefl_optimize_huffman_table(tdefl_compressor *d, + int table_num, int table_len, + int code_size_limit, + int static_table) { + int i, j, l, num_codes[1 + TDEFL_MAX_SUPPORTED_HUFF_CODESIZE]; + mz_uint next_code[TDEFL_MAX_SUPPORTED_HUFF_CODESIZE + 1]; + MZ_CLEAR_ARR(num_codes); + if (static_table) { + for (i = 0; i < table_len; i++) + num_codes[d->m_huff_code_sizes[table_num][i]]++; + } else { + tdefl_sym_freq syms0[TDEFL_MAX_HUFF_SYMBOLS], + syms1[TDEFL_MAX_HUFF_SYMBOLS], *pSyms; + int num_used_syms = 0; + const mz_uint16 *pSym_count = &d->m_huff_count[table_num][0]; + for (i = 0; i < table_len; i++) + if (pSym_count[i]) { + syms0[num_used_syms].m_key = (mz_uint16) pSym_count[i]; + syms0[num_used_syms++].m_sym_index = (mz_uint16) i; + } + + pSyms = tdefl_radix_sort_syms(num_used_syms, syms0, syms1); + tdefl_calculate_minimum_redundancy(pSyms, num_used_syms); + + for (i = 0; i < num_used_syms; i++) num_codes[pSyms[i].m_key]++; + + tdefl_huffman_enforce_max_code_size(num_codes, num_used_syms, + code_size_limit); + + MZ_CLEAR_ARR(d->m_huff_code_sizes[table_num]); + MZ_CLEAR_ARR(d->m_huff_codes[table_num]); + for (i = 1, j = num_used_syms; i <= code_size_limit; i++) + for (l = num_codes[i]; l > 0; l--) + d->m_huff_code_sizes[table_num][pSyms[--j].m_sym_index] = + (mz_uint8) (i); + } + + next_code[1] = 0; + for (j = 0, i = 2; i <= code_size_limit; i++) + next_code[i] = j = ((j + num_codes[i - 1]) << 1); + + for (i = 0; i < table_len; i++) { + mz_uint rev_code = 0, code, code_size; + if ((code_size = d->m_huff_code_sizes[table_num][i]) == 0) + continue; + code = next_code[code_size]++; + for (l = code_size; l > 0; l--, code >>= 1) + rev_code = (rev_code << 1) | (code & 1); + d->m_huff_codes[table_num][i] = (mz_uint16) rev_code; + } +} + +# define TDEFL_PUT_BITS(b, l) \ + do { \ + mz_uint bits = b; \ + mz_uint len = l; \ + MZ_ASSERT(bits <= ((1U << len) - 1U)); \ + d->m_bit_buffer |= (bits << d->m_bits_in); \ + d->m_bits_in += len; \ + while (d->m_bits_in >= 8) { \ + if (d->m_pOutput_buf < d->m_pOutput_buf_end) \ + *d->m_pOutput_buf++ = (mz_uint8) (d->m_bit_buffer); \ + d->m_bit_buffer >>= 8; \ + d->m_bits_in -= 8; \ + } \ + } \ + MZ_MACRO_END + +# define TDEFL_RLE_PREV_CODE_SIZE() \ + { \ + if (rle_repeat_count) { \ + if (rle_repeat_count < 3) { \ + d->m_huff_count[2][prev_code_size] = \ + (mz_uint16) (d->m_huff_count[2][prev_code_size] + \ + rle_repeat_count); \ + while (rle_repeat_count--) \ + packed_code_sizes[num_packed_code_sizes++] = \ + prev_code_size; \ + } else { \ + d->m_huff_count[2][16] = \ + (mz_uint16) (d->m_huff_count[2][16] + 1); \ + packed_code_sizes[num_packed_code_sizes++] = 16; \ + packed_code_sizes[num_packed_code_sizes++] = \ + (mz_uint8) (rle_repeat_count - 3); \ + } \ + rle_repeat_count = 0; \ + } \ + } + +# define TDEFL_RLE_ZERO_CODE_SIZE() \ + { \ + if (rle_z_count) { \ + if (rle_z_count < 3) { \ + d->m_huff_count[2][0] = \ + (mz_uint16) (d->m_huff_count[2][0] + rle_z_count); \ + while (rle_z_count--) \ + packed_code_sizes[num_packed_code_sizes++] = 0; \ + } else if (rle_z_count <= 10) { \ + d->m_huff_count[2][17] = \ + (mz_uint16) (d->m_huff_count[2][17] + 1); \ + packed_code_sizes[num_packed_code_sizes++] = 17; \ + packed_code_sizes[num_packed_code_sizes++] = \ + (mz_uint8) (rle_z_count - 3); \ + } else { \ + d->m_huff_count[2][18] = \ + (mz_uint16) (d->m_huff_count[2][18] + 1); \ + packed_code_sizes[num_packed_code_sizes++] = 18; \ + packed_code_sizes[num_packed_code_sizes++] = \ + (mz_uint8) (rle_z_count - 11); \ + } \ + rle_z_count = 0; \ + } \ + } + +static const mz_uint8 s_tdefl_packed_code_size_syms_swizzle[] = { + 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 +}; + +static void tdefl_start_dynamic_block(tdefl_compressor *d) { + int num_lit_codes, num_dist_codes, num_bit_lengths; + mz_uint i, total_code_sizes_to_pack, num_packed_code_sizes, + rle_z_count, rle_repeat_count, packed_code_sizes_index; + mz_uint8 code_sizes_to_pack[TDEFL_MAX_HUFF_SYMBOLS_0 + + TDEFL_MAX_HUFF_SYMBOLS_1], + packed_code_sizes[TDEFL_MAX_HUFF_SYMBOLS_0 + + TDEFL_MAX_HUFF_SYMBOLS_1], + prev_code_size = 0xFF; + + d->m_huff_count[0][256] = 1; + + tdefl_optimize_huffman_table(d, 0, TDEFL_MAX_HUFF_SYMBOLS_0, 15, + MZ_FALSE); + tdefl_optimize_huffman_table(d, 1, TDEFL_MAX_HUFF_SYMBOLS_1, 15, + MZ_FALSE); + + for (num_lit_codes = 286; num_lit_codes > 257; num_lit_codes--) + if (d->m_huff_code_sizes[0][num_lit_codes - 1]) + break; + for (num_dist_codes = 30; num_dist_codes > 1; num_dist_codes--) + if (d->m_huff_code_sizes[1][num_dist_codes - 1]) + break; + + memcpy(code_sizes_to_pack, &d->m_huff_code_sizes[0][0], + num_lit_codes); + memcpy(code_sizes_to_pack + num_lit_codes, + &d->m_huff_code_sizes[1][0], num_dist_codes); + total_code_sizes_to_pack = num_lit_codes + num_dist_codes; + num_packed_code_sizes = 0; + rle_z_count = 0; + rle_repeat_count = 0; + + memset(&d->m_huff_count[2][0], 0, + sizeof(d->m_huff_count[2][0]) * TDEFL_MAX_HUFF_SYMBOLS_2); + for (i = 0; i < total_code_sizes_to_pack; i++) { + mz_uint8 code_size = code_sizes_to_pack[i]; + if (!code_size) { + TDEFL_RLE_PREV_CODE_SIZE(); + if (++rle_z_count == 138) { + TDEFL_RLE_ZERO_CODE_SIZE(); + } + } else { + TDEFL_RLE_ZERO_CODE_SIZE(); + if (code_size != prev_code_size) { + TDEFL_RLE_PREV_CODE_SIZE(); + d->m_huff_count[2][code_size] = + (mz_uint16) (d->m_huff_count[2][code_size] + 1); + packed_code_sizes[num_packed_code_sizes++] = code_size; + } else if (++rle_repeat_count == 6) { + TDEFL_RLE_PREV_CODE_SIZE(); + } + } + prev_code_size = code_size; + } + if (rle_repeat_count) { + TDEFL_RLE_PREV_CODE_SIZE(); + } else { + TDEFL_RLE_ZERO_CODE_SIZE(); + } + + tdefl_optimize_huffman_table(d, 2, TDEFL_MAX_HUFF_SYMBOLS_2, 7, + MZ_FALSE); + + TDEFL_PUT_BITS(2, 2); + + TDEFL_PUT_BITS(num_lit_codes - 257, 5); + TDEFL_PUT_BITS(num_dist_codes - 1, 5); + + for (num_bit_lengths = 18; num_bit_lengths >= 0; num_bit_lengths--) + if (d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle + [num_bit_lengths]]) + break; + num_bit_lengths = MZ_MAX(4, (num_bit_lengths + 1)); + TDEFL_PUT_BITS(num_bit_lengths - 4, 4); + for (i = 0; (int) i < num_bit_lengths; i++) + TDEFL_PUT_BITS(d->m_huff_code_sizes + [2][s_tdefl_packed_code_size_syms_swizzle[i]], + 3); + + for (packed_code_sizes_index = 0; + packed_code_sizes_index < num_packed_code_sizes;) { + mz_uint code = packed_code_sizes[packed_code_sizes_index++]; + MZ_ASSERT(code < TDEFL_MAX_HUFF_SYMBOLS_2); + TDEFL_PUT_BITS(d->m_huff_codes[2][code], + d->m_huff_code_sizes[2][code]); + if (code >= 16) + TDEFL_PUT_BITS(packed_code_sizes[packed_code_sizes_index++], + "\02\03\07"[code - 16]); + } +} + +static void tdefl_start_static_block(tdefl_compressor *d) { + mz_uint i; + mz_uint8 *p = &d->m_huff_code_sizes[0][0]; + + for (i = 0; i <= 143; ++i) *p++ = 8; + for (; i <= 255; ++i) *p++ = 9; + for (; i <= 279; ++i) *p++ = 7; + for (; i <= 287; ++i) *p++ = 8; + + memset(d->m_huff_code_sizes[1], 5, 32); + + tdefl_optimize_huffman_table(d, 0, 288, 15, MZ_TRUE); + tdefl_optimize_huffman_table(d, 1, 32, 15, MZ_TRUE); + + TDEFL_PUT_BITS(1, 2); +} + +static const mz_uint mz_bitmasks[17] = { + 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, + 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, + 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF +}; + +# if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && \ + MINIZ_HAS_64BIT_REGISTERS +static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d) { + mz_uint flags; + mz_uint8 *pLZ_codes; + mz_uint8 *pOutput_buf = d->m_pOutput_buf; + mz_uint8 *pLZ_code_buf_end = d->m_pLZ_code_buf; + mz_uint64 bit_buffer = d->m_bit_buffer; + mz_uint bits_in = d->m_bits_in; + +# define TDEFL_PUT_BITS_FAST(b, l) \ + { \ + bit_buffer |= (((mz_uint64) (b)) << bits_in); \ + bits_in += (l); \ + } + + flags = 1; + for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < pLZ_code_buf_end; + flags >>= 1) { + if (flags == 1) + flags = *pLZ_codes++ | 0x100; + + if (flags & 1) { + mz_uint s0, s1, n0, n1, sym, num_extra_bits; + mz_uint match_len = pLZ_codes[0]; + mz_uint match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8)); + pLZ_codes += 3; + + MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS_FAST( + d->m_huff_codes[0][s_tdefl_len_sym[match_len]], + d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS_FAST( + match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], + s_tdefl_len_extra[match_len]); + + /* This sequence coaxes MSVC into using cmov's vs. jmp's. */ + s0 = s_tdefl_small_dist_sym[match_dist & 511]; + n0 = s_tdefl_small_dist_extra[match_dist & 511]; + s1 = s_tdefl_large_dist_sym[match_dist >> 8]; + n1 = s_tdefl_large_dist_extra[match_dist >> 8]; + sym = (match_dist < 512) ? s0 : s1; + num_extra_bits = (match_dist < 512) ? n0 : n1; + + MZ_ASSERT(d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[1][sym], + d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS_FAST(match_dist & mz_bitmasks[num_extra_bits], + num_extra_bits); + } else { + mz_uint lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + + if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) { + flags >>= 1; + lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + + if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) { + flags >>= 1; + lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + } + } + } + + if (pOutput_buf >= d->m_pOutput_buf_end) + return MZ_FALSE; + + memcpy(pOutput_buf, &bit_buffer, sizeof(mz_uint64)); + pOutput_buf += (bits_in >> 3); + bit_buffer >>= (bits_in & ~7); + bits_in &= 7; + } + +# undef TDEFL_PUT_BITS_FAST + + d->m_pOutput_buf = pOutput_buf; + d->m_bits_in = 0; + d->m_bit_buffer = 0; + + while (bits_in) { + mz_uint32 n = MZ_MIN(bits_in, 16); + TDEFL_PUT_BITS((mz_uint) bit_buffer & mz_bitmasks[n], n); + bit_buffer >>= n; + bits_in -= n; + } + + TDEFL_PUT_BITS(d->m_huff_codes[0][256], + d->m_huff_code_sizes[0][256]); + + return (d->m_pOutput_buf < d->m_pOutput_buf_end); +} +# else +static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d) { + mz_uint flags; + mz_uint8 *pLZ_codes; + + flags = 1; + for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < d->m_pLZ_code_buf; + flags >>= 1) { + if (flags == 1) + flags = *pLZ_codes++ | 0x100; + if (flags & 1) { + mz_uint sym, num_extra_bits; + mz_uint match_len = pLZ_codes[0], + match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8)); + pLZ_codes += 3; + + MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS( + d->m_huff_codes[0][s_tdefl_len_sym[match_len]], + d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); + TDEFL_PUT_BITS(match_len & + mz_bitmasks[s_tdefl_len_extra[match_len]], + s_tdefl_len_extra[match_len]); + + if (match_dist < 512) { + sym = s_tdefl_small_dist_sym[match_dist]; + num_extra_bits = s_tdefl_small_dist_extra[match_dist]; + } else { + sym = s_tdefl_large_dist_sym[match_dist >> 8]; + num_extra_bits = s_tdefl_large_dist_extra[match_dist >> 8]; + } + MZ_ASSERT(d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS(d->m_huff_codes[1][sym], + d->m_huff_code_sizes[1][sym]); + TDEFL_PUT_BITS(match_dist & mz_bitmasks[num_extra_bits], + num_extra_bits); + } else { + mz_uint lit = *pLZ_codes++; + MZ_ASSERT(d->m_huff_code_sizes[0][lit]); + TDEFL_PUT_BITS(d->m_huff_codes[0][lit], + d->m_huff_code_sizes[0][lit]); + } + } + + TDEFL_PUT_BITS(d->m_huff_codes[0][256], + d->m_huff_code_sizes[0][256]); + + return (d->m_pOutput_buf < d->m_pOutput_buf_end); +} +# endif /* MINIZ_USE_UNALIGNED_LOADS_AND_STORES && \ + MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS */ + +static mz_bool tdefl_compress_block(tdefl_compressor *d, + mz_bool static_block) { + if (static_block) + tdefl_start_static_block(d); + else + tdefl_start_dynamic_block(d); + return tdefl_compress_lz_codes(d); +} + +static const mz_uint s_tdefl_num_probes[11] = { 0, 1, 6, 32, + 16, 32, 128, 256, + 512, 768, 1500 }; + +static int tdefl_flush_block(tdefl_compressor *d, int flush) { + mz_uint saved_bit_buf, saved_bits_in; + mz_uint8 *pSaved_output_buf; + mz_bool comp_block_succeeded = MZ_FALSE; + int n, + use_raw_block = ((d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS) != + 0) && + (d->m_lookahead_pos - + d->m_lz_code_buf_dict_pos) <= d->m_dict_size; + mz_uint8 *pOutput_buf_start = + ((d->m_pPut_buf_func == NULL) && + ((*d->m_pOut_buf_size - d->m_out_buf_ofs) >= + TDEFL_OUT_BUF_SIZE)) + ? ((mz_uint8 *) d->m_pOut_buf + d->m_out_buf_ofs) + : d->m_output_buf; + + d->m_pOutput_buf = pOutput_buf_start; + d->m_pOutput_buf_end = d->m_pOutput_buf + TDEFL_OUT_BUF_SIZE - 16; + + MZ_ASSERT(!d->m_output_flush_remaining); + d->m_output_flush_ofs = 0; + d->m_output_flush_remaining = 0; + + *d->m_pLZ_flags = (mz_uint8) (*d->m_pLZ_flags >> + d->m_num_flags_left); + d->m_pLZ_code_buf -= (d->m_num_flags_left == 8); + + if ((d->m_flags & TDEFL_WRITE_ZLIB_HEADER) && (!d->m_block_index)) { + const mz_uint8 cmf = 0x78; + mz_uint8 flg, flevel = 3; + mz_uint header, i, + mz_un = sizeof(s_tdefl_num_probes) / sizeof(mz_uint); + + /* Determine compression level by reversing the process in + * tdefl_create_comp_flags_from_zip_params() */ + for (i = 0; i < mz_un; i++) + if (s_tdefl_num_probes[i] == (d->m_flags & 0xFFF)) + break; + + if (i < 2) + flevel = 0; + else if (i < 6) + flevel = 1; + else if (i == 6) + flevel = 2; + + header = cmf << 8 | (flevel << 6); + header += 31 - (header % 31); + flg = header & 0xFF; + + TDEFL_PUT_BITS(cmf, 8); + TDEFL_PUT_BITS(flg, 8); + } + + TDEFL_PUT_BITS(flush == TDEFL_FINISH, 1); + + pSaved_output_buf = d->m_pOutput_buf; + saved_bit_buf = d->m_bit_buffer; + saved_bits_in = d->m_bits_in; + + if (!use_raw_block) + comp_block_succeeded = tdefl_compress_block( + d, (d->m_flags & TDEFL_FORCE_ALL_STATIC_BLOCKS) || + (d->m_total_lz_bytes < 48)); + + /* If the block gets expanded, forget the current contents of the + * output buffer and send a raw block instead. */ + if (((use_raw_block) || ((d->m_total_lz_bytes) && + ((d->m_pOutput_buf - pSaved_output_buf + + 1U) >= d->m_total_lz_bytes))) && + ((d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= + d->m_dict_size)) { + mz_uint i; + d->m_pOutput_buf = pSaved_output_buf; + d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in; + TDEFL_PUT_BITS(0, 2); + if (d->m_bits_in) { + TDEFL_PUT_BITS(0, 8 - d->m_bits_in); + } + for (i = 2; i; --i, d->m_total_lz_bytes ^= 0xFFFF) { + TDEFL_PUT_BITS(d->m_total_lz_bytes & 0xFFFF, 16); + } + for (i = 0; i < d->m_total_lz_bytes; ++i) { + TDEFL_PUT_BITS(d->m_dict[(d->m_lz_code_buf_dict_pos + i) & + TDEFL_LZ_DICT_SIZE_MASK], + 8); + } + } + /* Check for the extremely unlikely (if not impossible) case of the + compressed block not fitting into the output buffer when using + dynamic codes. */ + else if (!comp_block_succeeded) { + d->m_pOutput_buf = pSaved_output_buf; + d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in; + tdefl_compress_block(d, MZ_TRUE); + } + + if (flush) { + if (flush == TDEFL_FINISH) { + if (d->m_bits_in) { + TDEFL_PUT_BITS(0, 8 - d->m_bits_in); + } + if (d->m_flags & TDEFL_WRITE_ZLIB_HEADER) { + mz_uint i, a = d->m_adler32; + for (i = 0; i < 4; i++) { + TDEFL_PUT_BITS((a >> 24) & 0xFF, 8); + a <<= 8; + } + } + } else { + mz_uint i, z = 0; + TDEFL_PUT_BITS(0, 3); + if (d->m_bits_in) { + TDEFL_PUT_BITS(0, 8 - d->m_bits_in); + } + for (i = 2; i; --i, z ^= 0xFFFF) { + TDEFL_PUT_BITS(z & 0xFFFF, 16); + } + } + } + + MZ_ASSERT(d->m_pOutput_buf < d->m_pOutput_buf_end); + + memset(&d->m_huff_count[0][0], 0, + sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0); + memset(&d->m_huff_count[1][0], 0, + sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1); + + d->m_pLZ_code_buf = d->m_lz_code_buf + 1; + d->m_pLZ_flags = d->m_lz_code_buf; + d->m_num_flags_left = 8; + d->m_lz_code_buf_dict_pos += d->m_total_lz_bytes; + d->m_total_lz_bytes = 0; + d->m_block_index++; + + if ((n = (int) (d->m_pOutput_buf - pOutput_buf_start)) != 0) { + if (d->m_pPut_buf_func) { + *d->m_pIn_buf_size = d->m_pSrc - + (const mz_uint8 *) d->m_pIn_buf; + if (!(*d->m_pPut_buf_func)(d->m_output_buf, n, + d->m_pPut_buf_user)) + return ( + d->m_prev_return_status = TDEFL_STATUS_PUT_BUF_FAILED); + } else if (pOutput_buf_start == d->m_output_buf) { + int bytes_to_copy = (int) MZ_MIN( + (size_t) n, + (size_t) (*d->m_pOut_buf_size - d->m_out_buf_ofs)); + memcpy((mz_uint8 *) d->m_pOut_buf + d->m_out_buf_ofs, + d->m_output_buf, bytes_to_copy); + d->m_out_buf_ofs += bytes_to_copy; + if ((n -= bytes_to_copy) != 0) { + d->m_output_flush_ofs = bytes_to_copy; + d->m_output_flush_remaining = n; + } + } else { + d->m_out_buf_ofs += n; + } + } + + return d->m_output_flush_remaining; +} + +# if MINIZ_USE_UNALIGNED_LOADS_AND_STORES +# ifdef MINIZ_UNALIGNED_USE_MEMCPY +static mz_uint16 TDEFL_READ_UNALIGNED_WORD(const mz_uint8 *p) { + mz_uint16 ret; + memcpy(&ret, p, sizeof(mz_uint16)); + return ret; +} +static mz_uint16 TDEFL_READ_UNALIGNED_WORD2(const mz_uint16 *p) { + mz_uint16 ret; + memcpy(&ret, p, sizeof(mz_uint16)); + return ret; +} +# else +# define TDEFL_READ_UNALIGNED_WORD(p) *(const mz_uint16 *) (p) +# define TDEFL_READ_UNALIGNED_WORD2(p) *(const mz_uint16 *) (p) +# endif +static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, + mz_uint lookahead_pos, + mz_uint max_dist, + mz_uint max_match_len, + mz_uint *pMatch_dist, + mz_uint *pMatch_len) { + mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, + match_len = *pMatch_len, probe_pos = pos, + next_probe_pos, probe_len; + mz_uint num_probes_left = d->m_max_probes[match_len >= 32]; + const mz_uint16 *s = (const mz_uint16 *) (d->m_dict + pos), *p, *q; + mz_uint16 c01 = TDEFL_READ_UNALIGNED_WORD( + &d->m_dict[pos + match_len - 1]), + s01 = TDEFL_READ_UNALIGNED_WORD2(s); + MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); + if (max_match_len <= match_len) + return; + for (;;) { + for (;;) { + if (--num_probes_left == 0) + return; +# define TDEFL_PROBE \ + next_probe_pos = d->m_next[probe_pos]; \ + if ((!next_probe_pos) || \ + ((dist = (mz_uint16) (lookahead_pos - next_probe_pos)) > \ + max_dist)) \ + return; \ + probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \ + if (TDEFL_READ_UNALIGNED_WORD( \ + &d->m_dict[probe_pos + match_len - 1]) == c01) \ + break; + TDEFL_PROBE; + TDEFL_PROBE; + TDEFL_PROBE; + } + if (!dist) + break; + q = (const mz_uint16 *) (d->m_dict + probe_pos); + if (TDEFL_READ_UNALIGNED_WORD2(q) != s01) + continue; + p = s; + probe_len = 32; + do { + } while ((TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (--probe_len > 0)); + if (!probe_len) { + *pMatch_dist = dist; + *pMatch_len = MZ_MIN(max_match_len, + (mz_uint) TDEFL_MAX_MATCH_LEN); + break; + } else if ((probe_len = ((mz_uint) (p - s) * 2) + + (mz_uint) (*(const mz_uint8 *) p == + *(const mz_uint8 *) q)) > + match_len) { + *pMatch_dist = dist; + if ((*pMatch_len = match_len = MZ_MIN( + max_match_len, probe_len)) == max_match_len) + break; + c01 = TDEFL_READ_UNALIGNED_WORD( + &d->m_dict[pos + match_len - 1]); + } + } +} +# else +static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, + mz_uint lookahead_pos, + mz_uint max_dist, + mz_uint max_match_len, + mz_uint *pMatch_dist, + mz_uint *pMatch_len) { + mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, + match_len = *pMatch_len, probe_pos = pos, + next_probe_pos, probe_len; + mz_uint num_probes_left = d->m_max_probes[match_len >= 32]; + const mz_uint8 *s = d->m_dict + pos, *p, *q; + mz_uint8 c0 = d->m_dict[pos + match_len], + c1 = d->m_dict[pos + match_len - 1]; + MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); + if (max_match_len <= match_len) + return; + for (;;) { + for (;;) { + if (--num_probes_left == 0) + return; +# define TDEFL_PROBE \ + next_probe_pos = d->m_next[probe_pos]; \ + if ((!next_probe_pos) || \ + ((dist = (mz_uint16) (lookahead_pos - next_probe_pos)) > \ + max_dist)) \ + return; \ + probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \ + if ((d->m_dict[probe_pos + match_len] == c0) && \ + (d->m_dict[probe_pos + match_len - 1] == c1)) \ + break; + TDEFL_PROBE; + TDEFL_PROBE; + TDEFL_PROBE; + } + if (!dist) + break; + p = s; + q = d->m_dict + probe_pos; + for (probe_len = 0; probe_len < max_match_len; probe_len++) + if (*p++ != *q++) + break; + if (probe_len > match_len) { + *pMatch_dist = dist; + if ((*pMatch_len = match_len = probe_len) == max_match_len) + return; + c0 = d->m_dict[pos + match_len]; + c1 = d->m_dict[pos + match_len - 1]; + } + } +} +# endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES */ + +# if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN +# ifdef MINIZ_UNALIGNED_USE_MEMCPY +static mz_uint32 TDEFL_READ_UNALIGNED_WORD32(const mz_uint8 *p) { + mz_uint32 ret; + memcpy(&ret, p, sizeof(mz_uint32)); + return ret; +} +# else +# define TDEFL_READ_UNALIGNED_WORD32(p) *(const mz_uint32 *) (p) +# endif +static mz_bool tdefl_compress_fast(tdefl_compressor *d) { + /* Faster, minimally featured LZRW1-style match+parse loop with + * better register utilization. Intended for applications where raw + * throughput is valued more highly than ratio. */ + mz_uint lookahead_pos = d->m_lookahead_pos, + lookahead_size = d->m_lookahead_size, + dict_size = d->m_dict_size, + total_lz_bytes = d->m_total_lz_bytes, + num_flags_left = d->m_num_flags_left; + mz_uint8 *pLZ_code_buf = d->m_pLZ_code_buf, + *pLZ_flags = d->m_pLZ_flags; + mz_uint cur_pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK; + + while ((d->m_src_buf_left) || ((d->m_flush) && (lookahead_size))) { + const mz_uint TDEFL_COMP_FAST_LOOKAHEAD_SIZE = 4096; + mz_uint dst_pos = (lookahead_pos + lookahead_size) & + TDEFL_LZ_DICT_SIZE_MASK; + mz_uint num_bytes_to_process = (mz_uint) MZ_MIN( + d->m_src_buf_left, + TDEFL_COMP_FAST_LOOKAHEAD_SIZE - lookahead_size); + d->m_src_buf_left -= num_bytes_to_process; + lookahead_size += num_bytes_to_process; + + while (num_bytes_to_process) { + mz_uint32 n = MZ_MIN(TDEFL_LZ_DICT_SIZE - dst_pos, + num_bytes_to_process); + memcpy(d->m_dict + dst_pos, d->m_pSrc, n); + if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) + memcpy(d->m_dict + TDEFL_LZ_DICT_SIZE + dst_pos, d->m_pSrc, + MZ_MIN(n, (TDEFL_MAX_MATCH_LEN - 1) - dst_pos)); + d->m_pSrc += n; + dst_pos = (dst_pos + n) & TDEFL_LZ_DICT_SIZE_MASK; + num_bytes_to_process -= n; + } + + dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - lookahead_size, + dict_size); + if ((!d->m_flush) && + (lookahead_size < TDEFL_COMP_FAST_LOOKAHEAD_SIZE)) + break; + + while (lookahead_size >= 4) { + mz_uint cur_match_dist, cur_match_len = 1; + mz_uint8 *pCur_dict = d->m_dict + cur_pos; + mz_uint first_trigram = TDEFL_READ_UNALIGNED_WORD32(pCur_dict) & + 0xFFFFFF; + mz_uint hash = (first_trigram ^ + (first_trigram >> + (24 - (TDEFL_LZ_HASH_BITS - 8)))) & + TDEFL_LEVEL1_HASH_SIZE_MASK; + mz_uint probe_pos = d->m_hash[hash]; + d->m_hash[hash] = (mz_uint16) lookahead_pos; + + if (((cur_match_dist = (mz_uint16) (lookahead_pos - + probe_pos)) <= dict_size) && + ((TDEFL_READ_UNALIGNED_WORD32( + d->m_dict + (probe_pos &= TDEFL_LZ_DICT_SIZE_MASK)) & + 0xFFFFFF) == first_trigram)) { + const mz_uint16 *p = (const mz_uint16 *) pCur_dict; + const mz_uint16 *q = (const mz_uint16 *) (d->m_dict + + probe_pos); + mz_uint32 probe_len = 32; + do { + } while ((TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (TDEFL_READ_UNALIGNED_WORD2(++p) == + TDEFL_READ_UNALIGNED_WORD2(++q)) && + (--probe_len > 0)); + cur_match_len = + ((mz_uint) (p - (const mz_uint16 *) pCur_dict) * 2) + + (mz_uint) (*(const mz_uint8 *) p == + *(const mz_uint8 *) q); + if (!probe_len) + cur_match_len = cur_match_dist ? TDEFL_MAX_MATCH_LEN : 0; + + if ((cur_match_len < TDEFL_MIN_MATCH_LEN) || + ((cur_match_len == TDEFL_MIN_MATCH_LEN) && + (cur_match_dist >= 8U * 1024U))) { + cur_match_len = 1; + *pLZ_code_buf++ = (mz_uint8) first_trigram; + *pLZ_flags = (mz_uint8) (*pLZ_flags >> 1); + d->m_huff_count[0][(mz_uint8) first_trigram]++; + } else { + mz_uint32 s0, s1; + cur_match_len = MZ_MIN(cur_match_len, lookahead_size); + + MZ_ASSERT((cur_match_len >= TDEFL_MIN_MATCH_LEN) && + (cur_match_dist >= 1) && + (cur_match_dist <= TDEFL_LZ_DICT_SIZE)); + + cur_match_dist--; + + pLZ_code_buf[0] = (mz_uint8) (cur_match_len - + TDEFL_MIN_MATCH_LEN); +# ifdef MINIZ_UNALIGNED_USE_MEMCPY + memcpy(&pLZ_code_buf[1], &cur_match_dist, + sizeof(cur_match_dist)); +# else + *(mz_uint16 *) (&pLZ_code_buf[1]) = (mz_uint16) + cur_match_dist; +# endif + pLZ_code_buf += 3; + *pLZ_flags = (mz_uint8) ((*pLZ_flags >> 1) | 0x80); + + s0 = s_tdefl_small_dist_sym[cur_match_dist & 511]; + s1 = s_tdefl_large_dist_sym[cur_match_dist >> 8]; + d->m_huff_count[1][(cur_match_dist < 512) ? s0 : s1]++; + + d->m_huff_count[0][s_tdefl_len_sym[cur_match_len - + TDEFL_MIN_MATCH_LEN]]++; + } + } else { + *pLZ_code_buf++ = (mz_uint8) first_trigram; + *pLZ_flags = (mz_uint8) (*pLZ_flags >> 1); + d->m_huff_count[0][(mz_uint8) first_trigram]++; + } + + if (--num_flags_left == 0) { + num_flags_left = 8; + pLZ_flags = pLZ_code_buf++; + } + + total_lz_bytes += cur_match_len; + lookahead_pos += cur_match_len; + dict_size = MZ_MIN(dict_size + cur_match_len, + (mz_uint) TDEFL_LZ_DICT_SIZE); + cur_pos = (cur_pos + cur_match_len) & TDEFL_LZ_DICT_SIZE_MASK; + MZ_ASSERT(lookahead_size >= cur_match_len); + lookahead_size -= cur_match_len; + + if (pLZ_code_buf > + &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) { + int n; + d->m_lookahead_pos = lookahead_pos; + d->m_lookahead_size = lookahead_size; + d->m_dict_size = dict_size; + d->m_total_lz_bytes = total_lz_bytes; + d->m_pLZ_code_buf = pLZ_code_buf; + d->m_pLZ_flags = pLZ_flags; + d->m_num_flags_left = num_flags_left; + if ((n = tdefl_flush_block(d, 0)) != 0) + return (n < 0) ? MZ_FALSE : MZ_TRUE; + total_lz_bytes = d->m_total_lz_bytes; + pLZ_code_buf = d->m_pLZ_code_buf; + pLZ_flags = d->m_pLZ_flags; + num_flags_left = d->m_num_flags_left; + } + } + + while (lookahead_size) { + mz_uint8 lit = d->m_dict[cur_pos]; + + total_lz_bytes++; + *pLZ_code_buf++ = lit; + *pLZ_flags = (mz_uint8) (*pLZ_flags >> 1); + if (--num_flags_left == 0) { + num_flags_left = 8; + pLZ_flags = pLZ_code_buf++; + } + + d->m_huff_count[0][lit]++; + + lookahead_pos++; + dict_size = MZ_MIN(dict_size + 1, (mz_uint) TDEFL_LZ_DICT_SIZE); + cur_pos = (cur_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; + lookahead_size--; + + if (pLZ_code_buf > + &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) { + int n; + d->m_lookahead_pos = lookahead_pos; + d->m_lookahead_size = lookahead_size; + d->m_dict_size = dict_size; + d->m_total_lz_bytes = total_lz_bytes; + d->m_pLZ_code_buf = pLZ_code_buf; + d->m_pLZ_flags = pLZ_flags; + d->m_num_flags_left = num_flags_left; + if ((n = tdefl_flush_block(d, 0)) != 0) + return (n < 0) ? MZ_FALSE : MZ_TRUE; + total_lz_bytes = d->m_total_lz_bytes; + pLZ_code_buf = d->m_pLZ_code_buf; + pLZ_flags = d->m_pLZ_flags; + num_flags_left = d->m_num_flags_left; + } + } + } + + d->m_lookahead_pos = lookahead_pos; + d->m_lookahead_size = lookahead_size; + d->m_dict_size = dict_size; + d->m_total_lz_bytes = total_lz_bytes; + d->m_pLZ_code_buf = pLZ_code_buf; + d->m_pLZ_flags = pLZ_flags; + d->m_num_flags_left = num_flags_left; + return MZ_TRUE; +} +# endif /* MINIZ_USE_UNALIGNED_LOADS_AND_STORES && \ + MINIZ_LITTLE_ENDIAN */ + +static MZ_FORCEINLINE void tdefl_record_literal(tdefl_compressor *d, + mz_uint8 lit) { + d->m_total_lz_bytes++; + *d->m_pLZ_code_buf++ = lit; + *d->m_pLZ_flags = (mz_uint8) (*d->m_pLZ_flags >> 1); + if (--d->m_num_flags_left == 0) { + d->m_num_flags_left = 8; + d->m_pLZ_flags = d->m_pLZ_code_buf++; + } + d->m_huff_count[0][lit]++; +} + +static MZ_FORCEINLINE void tdefl_record_match(tdefl_compressor *d, + mz_uint match_len, + mz_uint match_dist) { + mz_uint32 s0, s1; + + MZ_ASSERT((match_len >= TDEFL_MIN_MATCH_LEN) && (match_dist >= 1) && + (match_dist <= TDEFL_LZ_DICT_SIZE)); + + d->m_total_lz_bytes += match_len; + + d->m_pLZ_code_buf[0] = (mz_uint8) (match_len - TDEFL_MIN_MATCH_LEN); + + match_dist -= 1; + d->m_pLZ_code_buf[1] = (mz_uint8) (match_dist & 0xFF); + d->m_pLZ_code_buf[2] = (mz_uint8) (match_dist >> 8); + d->m_pLZ_code_buf += 3; + + *d->m_pLZ_flags = (mz_uint8) ((*d->m_pLZ_flags >> 1) | 0x80); + if (--d->m_num_flags_left == 0) { + d->m_num_flags_left = 8; + d->m_pLZ_flags = d->m_pLZ_code_buf++; + } + + s0 = s_tdefl_small_dist_sym[match_dist & 511]; + s1 = s_tdefl_large_dist_sym[(match_dist >> 8) & 127]; + d->m_huff_count[1][(match_dist < 512) ? s0 : s1]++; + d->m_huff_count[0] + [s_tdefl_len_sym[match_len - TDEFL_MIN_MATCH_LEN]]++; +} + +static mz_bool tdefl_compress_normal(tdefl_compressor *d) { + const mz_uint8 *pSrc = d->m_pSrc; + size_t src_buf_left = d->m_src_buf_left; + tdefl_flush flush = d->m_flush; + + while ((src_buf_left) || ((flush) && (d->m_lookahead_size))) { + mz_uint len_to_move, cur_match_dist, cur_match_len, cur_pos; + /* Update dictionary and hash chains. Keeps the lookahead size + * equal to TDEFL_MAX_MATCH_LEN. */ + if ((d->m_lookahead_size + d->m_dict_size) >= + (TDEFL_MIN_MATCH_LEN - 1)) { + mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & + TDEFL_LZ_DICT_SIZE_MASK, + ins_pos = d->m_lookahead_pos + d->m_lookahead_size - 2; + mz_uint hash = + (d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] + << TDEFL_LZ_HASH_SHIFT) ^ + d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK]; + mz_uint num_bytes_to_process = (mz_uint) MZ_MIN( + src_buf_left, TDEFL_MAX_MATCH_LEN - d->m_lookahead_size); + const mz_uint8 *pSrc_end = pSrc ? pSrc + num_bytes_to_process + : NULL; + src_buf_left -= num_bytes_to_process; + d->m_lookahead_size += num_bytes_to_process; + while (pSrc != pSrc_end) { + mz_uint8 c = *pSrc++; + d->m_dict[dst_pos] = c; + if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) + d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c; + hash = ((hash << TDEFL_LZ_HASH_SHIFT) ^ c) & + (TDEFL_LZ_HASH_SIZE - 1); + d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = + d->m_hash[hash]; + d->m_hash[hash] = (mz_uint16) (ins_pos); + dst_pos = (dst_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; + ins_pos++; + } + } else { + while ((src_buf_left) && + (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) { + mz_uint8 c = *pSrc++; + mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & + TDEFL_LZ_DICT_SIZE_MASK; + src_buf_left--; + d->m_dict[dst_pos] = c; + if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) + d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c; + if ((++d->m_lookahead_size + d->m_dict_size) >= + TDEFL_MIN_MATCH_LEN) { + mz_uint ins_pos = d->m_lookahead_pos + + (d->m_lookahead_size - 1) - 2; + mz_uint hash = + ((d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] + << (TDEFL_LZ_HASH_SHIFT * 2)) ^ + (d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK] + << TDEFL_LZ_HASH_SHIFT) ^ + c) & + (TDEFL_LZ_HASH_SIZE - 1); + d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = + d->m_hash[hash]; + d->m_hash[hash] = (mz_uint16) (ins_pos); + } + } + } + d->m_dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - d->m_lookahead_size, + d->m_dict_size); + if ((!flush) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) + break; + + /* Simple lazy/greedy parsing state machine. */ + len_to_move = 1; + cur_match_dist = 0; + cur_match_len = d->m_saved_match_len ? d->m_saved_match_len + : (TDEFL_MIN_MATCH_LEN - 1); + cur_pos = d->m_lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK; + if (d->m_flags & + (TDEFL_RLE_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS)) { + if ((d->m_dict_size) && + (!(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) { + mz_uint8 c = + d->m_dict[(cur_pos - 1) & TDEFL_LZ_DICT_SIZE_MASK]; + cur_match_len = 0; + while (cur_match_len < d->m_lookahead_size) { + if (d->m_dict[cur_pos + cur_match_len] != c) + break; + cur_match_len++; + } + if (cur_match_len < TDEFL_MIN_MATCH_LEN) + cur_match_len = 0; + else + cur_match_dist = 1; + } + } else { + tdefl_find_match(d, d->m_lookahead_pos, d->m_dict_size, + d->m_lookahead_size, &cur_match_dist, + &cur_match_len); + } + if (((cur_match_len == TDEFL_MIN_MATCH_LEN) && + (cur_match_dist >= 8U * 1024U)) || + (cur_pos == cur_match_dist) || + ((d->m_flags & TDEFL_FILTER_MATCHES) && + (cur_match_len <= 5))) { + cur_match_dist = cur_match_len = 0; + } + if (d->m_saved_match_len) { + if (cur_match_len > d->m_saved_match_len) { + tdefl_record_literal(d, (mz_uint8) d->m_saved_lit); + if (cur_match_len >= 128) { + tdefl_record_match(d, cur_match_len, cur_match_dist); + d->m_saved_match_len = 0; + len_to_move = cur_match_len; + } else { + d->m_saved_lit = d->m_dict[cur_pos]; + d->m_saved_match_dist = cur_match_dist; + d->m_saved_match_len = cur_match_len; + } + } else { + tdefl_record_match(d, d->m_saved_match_len, + d->m_saved_match_dist); + len_to_move = d->m_saved_match_len - 1; + d->m_saved_match_len = 0; + } + } else if (!cur_match_dist) + tdefl_record_literal( + d, d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]); + else if ((d->m_greedy_parsing) || + (d->m_flags & TDEFL_RLE_MATCHES) || + (cur_match_len >= 128)) { + tdefl_record_match(d, cur_match_len, cur_match_dist); + len_to_move = cur_match_len; + } else { + d->m_saved_lit = + d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]; + d->m_saved_match_dist = cur_match_dist; + d->m_saved_match_len = cur_match_len; + } + /* Move the lookahead forward by len_to_move bytes. */ + d->m_lookahead_pos += len_to_move; + MZ_ASSERT(d->m_lookahead_size >= len_to_move); + d->m_lookahead_size -= len_to_move; + d->m_dict_size = MZ_MIN(d->m_dict_size + len_to_move, + (mz_uint) TDEFL_LZ_DICT_SIZE); + /* Check if it's time to flush the current LZ codes to the + * internal output buffer. */ + if ((d->m_pLZ_code_buf > + &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) || + ((d->m_total_lz_bytes > 31 * 1024) && + (((((mz_uint) (d->m_pLZ_code_buf - d->m_lz_code_buf) * + 115) >> + 7) >= d->m_total_lz_bytes) || + (d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS)))) { + int n; + d->m_pSrc = pSrc; + d->m_src_buf_left = src_buf_left; + if ((n = tdefl_flush_block(d, 0)) != 0) + return (n < 0) ? MZ_FALSE : MZ_TRUE; + } + } + + d->m_pSrc = pSrc; + d->m_src_buf_left = src_buf_left; + return MZ_TRUE; +} + +static tdefl_status tdefl_flush_output_buffer(tdefl_compressor *d) { + if (d->m_pIn_buf_size) { + *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *) d->m_pIn_buf; + } + + if (d->m_pOut_buf_size) { + size_t n = MZ_MIN(*d->m_pOut_buf_size - d->m_out_buf_ofs, + d->m_output_flush_remaining); + memcpy((mz_uint8 *) d->m_pOut_buf + d->m_out_buf_ofs, + d->m_output_buf + d->m_output_flush_ofs, n); + d->m_output_flush_ofs += (mz_uint) n; + d->m_output_flush_remaining -= (mz_uint) n; + d->m_out_buf_ofs += n; + + *d->m_pOut_buf_size = d->m_out_buf_ofs; + } + + return (d->m_finished && !d->m_output_flush_remaining) + ? TDEFL_STATUS_DONE + : TDEFL_STATUS_OKAY; +} + +tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, + size_t *pIn_buf_size, void *pOut_buf, + size_t *pOut_buf_size, + tdefl_flush flush) { + if (!d) { + if (pIn_buf_size) + *pIn_buf_size = 0; + if (pOut_buf_size) + *pOut_buf_size = 0; + return TDEFL_STATUS_BAD_PARAM; + } + + d->m_pIn_buf = pIn_buf; + d->m_pIn_buf_size = pIn_buf_size; + d->m_pOut_buf = pOut_buf; + d->m_pOut_buf_size = pOut_buf_size; + d->m_pSrc = (const mz_uint8 *) (pIn_buf); + d->m_src_buf_left = pIn_buf_size ? *pIn_buf_size : 0; + d->m_out_buf_ofs = 0; + d->m_flush = flush; + + if (((d->m_pPut_buf_func != NULL) == + ((pOut_buf != NULL) || (pOut_buf_size != NULL))) || + (d->m_prev_return_status != TDEFL_STATUS_OKAY) || + (d->m_wants_to_finish && (flush != TDEFL_FINISH)) || + (pIn_buf_size && *pIn_buf_size && !pIn_buf) || + (pOut_buf_size && *pOut_buf_size && !pOut_buf)) { + if (pIn_buf_size) + *pIn_buf_size = 0; + if (pOut_buf_size) + *pOut_buf_size = 0; + return (d->m_prev_return_status = TDEFL_STATUS_BAD_PARAM); + } + d->m_wants_to_finish |= (flush == TDEFL_FINISH); + + if ((d->m_output_flush_remaining) || (d->m_finished)) + return (d->m_prev_return_status = tdefl_flush_output_buffer(d)); + +# if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN + if (((d->m_flags & TDEFL_MAX_PROBES_MASK) == 1) && + ((d->m_flags & TDEFL_GREEDY_PARSING_FLAG) != 0) && + ((d->m_flags & + (TDEFL_FILTER_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS | + TDEFL_RLE_MATCHES)) == 0)) { + if (!tdefl_compress_fast(d)) + return d->m_prev_return_status; + } else +# endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && \ + MINIZ_LITTLE_ENDIAN */ + { + if (!tdefl_compress_normal(d)) + return d->m_prev_return_status; + } + + if ((d->m_flags & + (TDEFL_WRITE_ZLIB_HEADER | TDEFL_COMPUTE_ADLER32)) && + (pIn_buf)) + d->m_adler32 = (mz_uint32) mz_adler32( + d->m_adler32, (const mz_uint8 *) pIn_buf, + d->m_pSrc - (const mz_uint8 *) pIn_buf); + + if ((flush) && (!d->m_lookahead_size) && (!d->m_src_buf_left) && + (!d->m_output_flush_remaining)) { + if (tdefl_flush_block(d, flush) < 0) + return d->m_prev_return_status; + d->m_finished = (flush == TDEFL_FINISH); + if (flush == TDEFL_FULL_FLUSH) { + MZ_CLEAR_ARR(d->m_hash); + MZ_CLEAR_ARR(d->m_next); + d->m_dict_size = 0; + } + } + + return (d->m_prev_return_status = tdefl_flush_output_buffer(d)); +} + +tdefl_status tdefl_compress_buffer(tdefl_compressor *d, + const void *pIn_buf, + size_t in_buf_size, + tdefl_flush flush) { + MZ_ASSERT(d->m_pPut_buf_func); + return tdefl_compress(d, pIn_buf, &in_buf_size, NULL, NULL, flush); +} + +tdefl_status tdefl_init(tdefl_compressor *d, + tdefl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags) { + d->m_pPut_buf_func = pPut_buf_func; + d->m_pPut_buf_user = pPut_buf_user; + d->m_flags = (mz_uint) (flags); + d->m_max_probes[0] = 1 + ((flags & 0xFFF) + 2) / 3; + d->m_greedy_parsing = (flags & TDEFL_GREEDY_PARSING_FLAG) != 0; + d->m_max_probes[1] = 1 + (((flags & 0xFFF) >> 2) + 2) / 3; + if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) + MZ_CLEAR_ARR(d->m_hash); + d->m_lookahead_pos = d->m_lookahead_size = d->m_dict_size = + d->m_total_lz_bytes = d->m_lz_code_buf_dict_pos = d->m_bits_in = + 0; + d->m_output_flush_ofs = d->m_output_flush_remaining = + d->m_finished = d->m_block_index = d->m_bit_buffer = + d->m_wants_to_finish = 0; + d->m_pLZ_code_buf = d->m_lz_code_buf + 1; + d->m_pLZ_flags = d->m_lz_code_buf; + *d->m_pLZ_flags = 0; + d->m_num_flags_left = 8; + d->m_pOutput_buf = d->m_output_buf; + d->m_pOutput_buf_end = d->m_output_buf; + d->m_prev_return_status = TDEFL_STATUS_OKAY; + d->m_saved_match_dist = d->m_saved_match_len = d->m_saved_lit = 0; + d->m_adler32 = 1; + d->m_pIn_buf = NULL; + d->m_pOut_buf = NULL; + d->m_pIn_buf_size = NULL; + d->m_pOut_buf_size = NULL; + d->m_flush = TDEFL_NO_FLUSH; + d->m_pSrc = NULL; + d->m_src_buf_left = 0; + d->m_out_buf_ofs = 0; + if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) + MZ_CLEAR_ARR(d->m_dict); + memset(&d->m_huff_count[0][0], 0, + sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0); + memset(&d->m_huff_count[1][0], 0, + sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1); + return TDEFL_STATUS_OKAY; +} + +tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d) { + return d->m_prev_return_status; +} + +mz_uint32 tdefl_get_adler32(tdefl_compressor *d) { + return d->m_adler32; +} + +mz_bool tdefl_compress_mem_to_output( + const void *pBuf, size_t buf_len, + tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, + int flags) { + tdefl_compressor *pComp; + mz_bool succeeded; + if (((buf_len) && (!pBuf)) || (!pPut_buf_func)) + return MZ_FALSE; + pComp = (tdefl_compressor *) MZ_MALLOC(sizeof(tdefl_compressor)); + if (!pComp) + return MZ_FALSE; + succeeded = (tdefl_init(pComp, pPut_buf_func, pPut_buf_user, + flags) == TDEFL_STATUS_OKAY); + succeeded = succeeded && (tdefl_compress_buffer( + pComp, pBuf, buf_len, TDEFL_FINISH) == + TDEFL_STATUS_DONE); + MZ_FREE(pComp); + return succeeded; +} + +typedef struct { + size_t m_size, m_capacity; + mz_uint8 *m_pBuf; + mz_bool m_expandable; +} tdefl_output_buffer; + +static mz_bool tdefl_output_buffer_putter(const void *pBuf, int len, + void *pUser) { + tdefl_output_buffer *p = (tdefl_output_buffer *) pUser; + size_t new_size = p->m_size + len; + if (new_size > p->m_capacity) { + size_t new_capacity = p->m_capacity; + mz_uint8 *pNew_buf; + if (!p->m_expandable) + return MZ_FALSE; + do { + new_capacity = MZ_MAX(128U, new_capacity << 1U); + } while (new_size > new_capacity); + pNew_buf = (mz_uint8 *) MZ_REALLOC(p->m_pBuf, new_capacity); + if (!pNew_buf) + return MZ_FALSE; + p->m_pBuf = pNew_buf; + p->m_capacity = new_capacity; + } + memcpy((mz_uint8 *) p->m_pBuf + p->m_size, pBuf, len); + p->m_size = new_size; + return MZ_TRUE; +} + +void *tdefl_compress_mem_to_heap(const void *pSrc_buf, + size_t src_buf_len, size_t *pOut_len, + int flags) { + tdefl_output_buffer out_buf; + MZ_CLEAR_OBJ(out_buf); + if (!pOut_len) + return MZ_FALSE; + else + *pOut_len = 0; + out_buf.m_expandable = MZ_TRUE; + if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, + tdefl_output_buffer_putter, + &out_buf, flags)) + return NULL; + *pOut_len = out_buf.m_size; + return out_buf.m_pBuf; +} + +size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, + const void *pSrc_buf, + size_t src_buf_len, int flags) { + tdefl_output_buffer out_buf; + MZ_CLEAR_OBJ(out_buf); + if (!pOut_buf) + return 0; + out_buf.m_pBuf = (mz_uint8 *) pOut_buf; + out_buf.m_capacity = out_buf_len; + if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, + tdefl_output_buffer_putter, + &out_buf, flags)) + return 0; + return out_buf.m_size; +} + +/* level may actually range from [0,10] (10 is a "hidden" max level, + * where we want a bit more compression and it's fine if throughput to + * fall off a cliff on some files). */ +mz_uint tdefl_create_comp_flags_from_zip_params(int level, + int window_bits, + int strategy) { + mz_uint comp_flags = + s_tdefl_num_probes[(level >= 0) ? MZ_MIN(10, level) + : MZ_DEFAULT_LEVEL] | + ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0); + if (window_bits > 0) + comp_flags |= TDEFL_WRITE_ZLIB_HEADER; + + if (!level) + comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS; + else if (strategy == MZ_FILTERED) + comp_flags |= TDEFL_FILTER_MATCHES; + else if (strategy == MZ_HUFFMAN_ONLY) + comp_flags &= ~TDEFL_MAX_PROBES_MASK; + else if (strategy == MZ_FIXED) + comp_flags |= TDEFL_FORCE_ALL_STATIC_BLOCKS; + else if (strategy == MZ_RLE) + comp_flags |= TDEFL_RLE_MATCHES; + + return comp_flags; +} + +# ifdef _MSC_VER +# pragma warning(push) +# pragma warning( \ + disable : 4204) /* nonstandard extension used : non-constant \ + aggregate initializer (also supported by \ + GNU C and C99, so no big deal) */ +# endif + +/* Simple PNG writer function by Alex Evans, 2011. Released into the + public domain: https://gist.github.com/908299, more context at + http://altdevblogaday.org/2011/04/06/a-smaller-jpg-encoder/. + This is actually a modification of Alex's original code so PNG files + generated by this function pass pngcheck. */ +void *tdefl_write_image_to_png_file_in_memory_ex( + const void *pImage, int w, int h, int num_chans, size_t *pLen_out, + mz_uint level, mz_bool flip) { + /* Using a local copy of this array here in case MINIZ_NO_ZLIB_APIS + * was defined. */ + static const mz_uint s_tdefl_png_num_probes[11] = { + 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500 + }; + tdefl_compressor *pComp = (tdefl_compressor *) MZ_MALLOC( + sizeof(tdefl_compressor)); + tdefl_output_buffer out_buf; + int i, bpl = w * num_chans, y, z; + mz_uint32 c; + *pLen_out = 0; + if (!pComp) + return NULL; + MZ_CLEAR_OBJ(out_buf); + out_buf.m_expandable = MZ_TRUE; + out_buf.m_capacity = 57 + MZ_MAX(64, (1 + bpl) * h); + if (NULL == + (out_buf.m_pBuf = (mz_uint8 *) MZ_MALLOC(out_buf.m_capacity))) { + MZ_FREE(pComp); + return NULL; + } + /* write dummy header */ + for (z = 41; z; --z) tdefl_output_buffer_putter(&z, 1, &out_buf); + /* compress image data */ + tdefl_init(pComp, tdefl_output_buffer_putter, &out_buf, + s_tdefl_png_num_probes[MZ_MIN(10, level)] | + TDEFL_WRITE_ZLIB_HEADER); + for (y = 0; y < h; ++y) { + tdefl_compress_buffer(pComp, &z, 1, TDEFL_NO_FLUSH); + tdefl_compress_buffer( + pComp, (mz_uint8 *) pImage + (flip ? (h - 1 - y) : y) * bpl, + bpl, TDEFL_NO_FLUSH); + } + if (tdefl_compress_buffer(pComp, NULL, 0, TDEFL_FINISH) != + TDEFL_STATUS_DONE) { + MZ_FREE(pComp); + MZ_FREE(out_buf.m_pBuf); + return NULL; + } + /* write real header */ + *pLen_out = out_buf.m_size - 41; + { + static const mz_uint8 chans[] = { 0x00, 0x00, 0x04, 0x02, 0x06 }; + mz_uint8 pnghdr[41] = { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, + 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, + 0x44, 0x52, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x49, 0x44, 0x41, 0x54 }; + pnghdr[18] = (mz_uint8) (w >> 8); + pnghdr[19] = (mz_uint8) w; + pnghdr[22] = (mz_uint8) (h >> 8); + pnghdr[23] = (mz_uint8) h; + pnghdr[25] = chans[num_chans]; + pnghdr[33] = (mz_uint8) (*pLen_out >> 24); + pnghdr[34] = (mz_uint8) (*pLen_out >> 16); + pnghdr[35] = (mz_uint8) (*pLen_out >> 8); + pnghdr[36] = (mz_uint8) *pLen_out; + c = (mz_uint32) mz_crc32(MZ_CRC32_INIT, pnghdr + 12, 17); + for (i = 0; i < 4; ++i, c <<= 8) + ((mz_uint8 *) (pnghdr + 29))[i] = (mz_uint8) (c >> 24); + memcpy(out_buf.m_pBuf, pnghdr, 41); + } + /* write footer (IDAT CRC-32, followed by IEND chunk) */ + if (!tdefl_output_buffer_putter( + "\0\0\0\0\0\0\0\0\x49\x45\x4e\x44\xae\x42\x60\x82", 16, + &out_buf)) { + *pLen_out = 0; + MZ_FREE(pComp); + MZ_FREE(out_buf.m_pBuf); + return NULL; + } + c = (mz_uint32) mz_crc32(MZ_CRC32_INIT, out_buf.m_pBuf + 41 - 4, + *pLen_out + 4); + for (i = 0; i < 4; ++i, c <<= 8) + (out_buf.m_pBuf + out_buf.m_size - 16)[i] = (mz_uint8) (c >> 24); + /* compute final size of file, grab compressed data buffer and + * return */ + *pLen_out += 57; + MZ_FREE(pComp); + return out_buf.m_pBuf; +} +void *tdefl_write_image_to_png_file_in_memory(const void *pImage, + int w, int h, + int num_chans, + size_t *pLen_out) { + /* Level 6 corresponds to TDEFL_DEFAULT_MAX_PROBES or + * MZ_DEFAULT_LEVEL (but we can't depend on MZ_DEFAULT_LEVEL being + * available in case the zlib API's where #defined out) */ + return tdefl_write_image_to_png_file_in_memory_ex( + pImage, w, h, num_chans, pLen_out, 6, MZ_FALSE); +} + +# ifndef MINIZ_NO_MALLOC +/* Allocate the tdefl_compressor and tinfl_decompressor structures in + * C so that */ +/* non-C language bindings to tdefL_ and tinfl_ API don't need to + * worry about */ +/* structure size and allocation mechanism. */ +tdefl_compressor *tdefl_compressor_alloc(void) { + return (tdefl_compressor *) MZ_MALLOC(sizeof(tdefl_compressor)); +} + +void tdefl_compressor_free(tdefl_compressor *pComp) { + MZ_FREE(pComp); +} +# endif + +# ifdef _MSC_VER +# pragma warning(pop) +# endif + +# ifdef __cplusplus +} +# endif + +#endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/ diff --git a/source/kit/miniz/miniz_tdef.h b/source/kit/miniz/miniz_tdef.h new file mode 100644 index 0000000..f7adaa6 --- /dev/null +++ b/source/kit/miniz/miniz_tdef.h @@ -0,0 +1,271 @@ +#ifndef KIT_MINIZ_MINIZ_TDEF_H +#define KIT_MINIZ_MINIZ_TDEF_H + +#include "miniz_common.h" + +#ifndef MINIZ_NO_DEFLATE_APIS + +# ifdef __cplusplus +extern "C" { +# endif +/* ------------------- Low-level Compression API Definitions */ + +/* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be + * slightly slower, and raw/dynamic blocks will be output more + * frequently). */ +# define TDEFL_LESS_MEMORY 0 + +/* tdefl_init() compression flags logically OR'd together (low 12 bits + * contain the max. number of probes per dictionary search): */ +/* TDEFL_DEFAULT_MAX_PROBES: The compressor defaults to 128 dictionary + * probes per dictionary search. 0=Huffman only, 1=Huffman+LZ + * (fastest/crap compression), 4095=Huffman+LZ (slowest/best + * compression). */ +enum { + TDEFL_HUFFMAN_ONLY = 0, + TDEFL_DEFAULT_MAX_PROBES = 128, + TDEFL_MAX_PROBES_MASK = 0xFFF +}; + +/* TDEFL_WRITE_ZLIB_HEADER: If set, the compressor outputs a zlib + * header before the deflate data, and the Adler-32 of the source data + * at the end. Otherwise, you'll get raw deflate data. */ +/* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input + * data (even when not writing zlib headers). */ +/* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, + * instead of more efficient lazy parsing. */ +/* TDEFL_NONDETERMINISTIC_PARSING_FLAG: Enable to decrease the + * compressor's initialization time to the minimum, but the output may + * vary from run to run given the same input (depending on the + * contents of memory). */ +/* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a + * distance of 1) */ +/* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */ +/* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman + * tables. */ +/* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate + * blocks. */ +/* The low 12 bits are reserved to control the max # of hash probes + * per dictionary lookup (see TDEFL_MAX_PROBES_MASK). */ +enum { + TDEFL_WRITE_ZLIB_HEADER = 0x01000, + TDEFL_COMPUTE_ADLER32 = 0x02000, + TDEFL_GREEDY_PARSING_FLAG = 0x04000, + TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000, + TDEFL_RLE_MATCHES = 0x10000, + TDEFL_FILTER_MATCHES = 0x20000, + TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000, + TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000 +}; + +/* High level compression functions: */ +/* tdefl_compress_mem_to_heap() compresses a block in memory to a heap + * block allocated via malloc(). */ +/* On entry: */ +/* pSrc_buf, src_buf_len: Pointer and size of source block to + * compress. */ +/* flags: The max match finder probes (default is 128) logically OR'd + * against the above flags. Higher probes are slower but improve + * compression. */ +/* On return: */ +/* Function returns a pointer to the compressed data, or NULL on + * failure. */ +/* *pOut_len will be set to the compressed data's size, which could + * be larger than src_buf_len on uncompressible data. */ +/* The caller must free() the returned block when it's no longer + * needed. */ +void *tdefl_compress_mem_to_heap(const void *pSrc_buf, + size_t src_buf_len, size_t *pOut_len, + int flags); + +/* tdefl_compress_mem_to_mem() compresses a block in memory to another + * block in memory. */ +/* Returns 0 on failure. */ +size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, + const void *pSrc_buf, + size_t src_buf_len, int flags); + +/* Compresses an image to a compressed PNG file in memory. */ +/* On entry: */ +/* pImage, w, h, and num_chans describe the image to compress. + * num_chans may be 1, 2, 3, or 4. */ +/* The image pitch in bytes per scanline will be w*num_chans. The + * leftmost pixel on the top scanline is stored first in memory. */ +/* level may range from [0,10], use MZ_NO_COMPRESSION, MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc. or a decent default is MZ_DEFAULT_LEVEL + */ +/* If flip is true, the image will be flipped on the Y axis (useful + * for OpenGL apps). */ +/* On return: */ +/* Function returns a pointer to the compressed data, or NULL on + * failure. */ +/* *pLen_out will be set to the size of the PNG image file. */ +/* The caller must mz_free() the returned heap block (which will + * typically be larger than *pLen_out) when it's no longer needed. */ +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); +void *tdefl_write_image_to_png_file_in_memory(const void *pImage, + int w, int h, + int num_chans, + size_t *pLen_out); + +/* Output stream interface. The compressor uses this interface to + * write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE + * at a time. */ +typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, + void *pUser); + +/* tdefl_compress_mem_to_output() compresses a block to an output + * stream. The above helpers use this function internally. */ +mz_bool tdefl_compress_mem_to_output( + const void *pBuf, size_t buf_len, + tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, + int flags); + +enum { + TDEFL_MAX_HUFF_TABLES = 3, + TDEFL_MAX_HUFF_SYMBOLS_0 = 288, + TDEFL_MAX_HUFF_SYMBOLS_1 = 32, + TDEFL_MAX_HUFF_SYMBOLS_2 = 19, + TDEFL_LZ_DICT_SIZE = 32768, + TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1, + TDEFL_MIN_MATCH_LEN = 3, + TDEFL_MAX_MATCH_LEN = 258 +}; + +/* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire + * compressed output block (using static/fixed Huffman codes). */ +# if TDEFL_LESS_MEMORY +enum { + TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024, + TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10, + TDEFL_MAX_HUFF_SYMBOLS = 288, + TDEFL_LZ_HASH_BITS = 12, + TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, + TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, + TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS +}; +# else +enum { + TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024, + TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10, + TDEFL_MAX_HUFF_SYMBOLS = 288, + TDEFL_LZ_HASH_BITS = 15, + TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, + TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, + TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS +}; +# endif + +/* The low-level tdefl functions below may be used directly if the + * above helper functions aren't flexible enough. The low-level + * functions don't make any heap allocations, unlike the above helper + * functions. */ +typedef enum { + TDEFL_STATUS_BAD_PARAM = -2, + TDEFL_STATUS_PUT_BUF_FAILED = -1, + TDEFL_STATUS_OKAY = 0, + TDEFL_STATUS_DONE = 1 +} tdefl_status; + +/* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */ +typedef enum { + TDEFL_NO_FLUSH = 0, + TDEFL_SYNC_FLUSH = 2, + TDEFL_FULL_FLUSH = 3, + TDEFL_FINISH = 4 +} tdefl_flush; + +/* tdefl's compression state structure. */ +typedef struct { + tdefl_put_buf_func_ptr m_pPut_buf_func; + void *m_pPut_buf_user; + mz_uint m_flags, m_max_probes[2]; + int m_greedy_parsing; + mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size; + mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, + *m_pOutput_buf_end; + mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, + m_bits_in, m_bit_buffer; + mz_uint m_saved_match_dist, m_saved_match_len, m_saved_lit, + m_output_flush_ofs, m_output_flush_remaining, m_finished, + m_block_index, m_wants_to_finish; + tdefl_status m_prev_return_status; + const void *m_pIn_buf; + void *m_pOut_buf; + size_t *m_pIn_buf_size, *m_pOut_buf_size; + tdefl_flush m_flush; + const mz_uint8 *m_pSrc; + size_t m_src_buf_left, m_out_buf_ofs; + mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1]; + mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES] + [TDEFL_MAX_HUFF_SYMBOLS]; + mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES] + [TDEFL_MAX_HUFF_SYMBOLS]; + mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES] + [TDEFL_MAX_HUFF_SYMBOLS]; + mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE]; + mz_uint16 m_next[TDEFL_LZ_DICT_SIZE]; + mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE]; + mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE]; +} tdefl_compressor; + +/* Initializes the compressor. */ +/* There is no corresponding deinit() function because the tdefl API's + * do not dynamically allocate memory. */ +/* pBut_buf_func: If NULL, output data will be supplied to the + * specified callback. In this case, the user should call the + * tdefl_compress_buffer() API for compression. */ +/* If pBut_buf_func is NULL the user should always call the + * tdefl_compress() API. */ +/* flags: See the above enums (TDEFL_HUFFMAN_ONLY, + * TDEFL_WRITE_ZLIB_HEADER, etc.) */ +tdefl_status tdefl_init(tdefl_compressor *d, + tdefl_put_buf_func_ptr pPut_buf_func, + void *pPut_buf_user, int flags); + +/* Compresses a block of data, consuming as much of the specified + * input buffer as possible, and writing as much compressed data to + * the specified output buffer as possible. */ +tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, + size_t *pIn_buf_size, void *pOut_buf, + size_t *pOut_buf_size, tdefl_flush flush); + +/* tdefl_compress_buffer() is only usable when the tdefl_init() is + * called with a non-NULL tdefl_put_buf_func_ptr. */ +/* tdefl_compress_buffer() always consumes the entire input buffer. */ +tdefl_status tdefl_compress_buffer(tdefl_compressor *d, + const void *pIn_buf, + size_t in_buf_size, + tdefl_flush flush); + +tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d); +mz_uint32 tdefl_get_adler32(tdefl_compressor *d); + +/* Create tdefl_compress() flags given zlib-style compression + * parameters. */ +/* level may range from [0,10] (where 10 is absolute max compression, + * but may be much slower on some files) */ +/* window_bits may be -15 (raw deflate) or 15 (zlib) */ +/* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, + * MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */ +mz_uint tdefl_create_comp_flags_from_zip_params(int level, + int window_bits, + int strategy); + +# ifndef MINIZ_NO_MALLOC +/* Allocate the tdefl_compressor structure in C so that */ +/* non-C language bindings to tdefl_ API don't need to worry about */ +/* structure size and allocation mechanism. */ +tdefl_compressor *tdefl_compressor_alloc(void); +void tdefl_compressor_free(tdefl_compressor *pComp); +# endif + +# ifdef __cplusplus +} +# endif + +#endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/ + +#endif diff --git a/source/kit/miniz/miniz_tinfl.c b/source/kit/miniz/miniz_tinfl.c new file mode 100644 index 0000000..c8843ad --- /dev/null +++ b/source/kit/miniz/miniz_tinfl.c @@ -0,0 +1,818 @@ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person + *obtaining a copy of this software and associated documentation files + *(the "Software"), to deal in the Software without restriction, + *including without limitation the rights to use, copy, modify, merge, + *publish, distribute, sublicense, and/or sell copies of the Software, + *and to permit persons to whom the Software is furnished to do so, + *subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + *included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + *NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + *BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + *ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + *CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + *SOFTWARE. + * + **************************************************************************/ + +#include "miniz.h" + +#ifndef MINIZ_NO_INFLATE_APIS + +# ifdef __cplusplus +extern "C" { +# endif + +/* ------------------- Low-level Decompression (completely independent + * from all compression API's) */ + +# define TINFL_MEMCPY(d, s, l) memcpy(d, s, l) +# define TINFL_MEMSET(p, c, l) memset(p, c, l) + +# define TINFL_CR_BEGIN \ + switch (r->m_state) { \ + case 0: +# define TINFL_CR_RETURN(state_index, result) \ + do { \ + status = result; \ + r->m_state = state_index; \ + goto common_exit; \ + case state_index:; \ + } \ + MZ_MACRO_END +# define TINFL_CR_RETURN_FOREVER(state_index, result) \ + do { \ + for (;;) { TINFL_CR_RETURN(state_index, result); } \ + } \ + MZ_MACRO_END +# define TINFL_CR_FINISH } + +# define TINFL_GET_BYTE(state_index, c) \ + do { \ + while (pIn_buf_cur >= pIn_buf_end) { \ + TINFL_CR_RETURN( \ + state_index, \ + (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) \ + ? TINFL_STATUS_NEEDS_MORE_INPUT \ + : TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS); \ + } \ + c = *pIn_buf_cur++; \ + } \ + MZ_MACRO_END + +# define TINFL_NEED_BITS(state_index, n) \ + do { \ + mz_uint c; \ + TINFL_GET_BYTE(state_index, c); \ + bit_buf |= (((tinfl_bit_buf_t) c) << num_bits); \ + num_bits += 8; \ + } while (num_bits < (mz_uint) (n)) +# define TINFL_SKIP_BITS(state_index, n) \ + do { \ + if (num_bits < (mz_uint) (n)) { \ + TINFL_NEED_BITS(state_index, n); \ + } \ + bit_buf >>= (n); \ + num_bits -= (n); \ + } \ + MZ_MACRO_END +# define TINFL_GET_BITS(state_index, b, n) \ + do { \ + if (num_bits < (mz_uint) (n)) { \ + TINFL_NEED_BITS(state_index, n); \ + } \ + b = bit_buf & ((1 << (n)) - 1); \ + bit_buf >>= (n); \ + num_bits -= (n); \ + } \ + MZ_MACRO_END + +/* TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of + * bytes remaining in the input buffer falls below 2. */ +/* It reads just enough bytes from the input stream that are needed to + * decode the next Huffman code (and absolutely no more). It works by + * trying to fully decode a */ +/* Huffman code by using whatever bits are currently present in the + * bit buffer. If this fails, it reads another byte, and tries again + * until it succeeds or until the */ +/* bit buffer contains >=15 bits (deflate's max. Huffman code size). + */ +# define TINFL_HUFF_BITBUF_FILL(state_index, pLookUp, pTree) \ + do { \ + temp = pLookUp[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \ + if (temp >= 0) { \ + code_len = temp >> 9; \ + if ((code_len) && (num_bits >= code_len)) \ + break; \ + } else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \ + code_len = TINFL_FAST_LOOKUP_BITS; \ + do { \ + temp = pTree[~temp + ((bit_buf >> code_len++) & 1)]; \ + } while ((temp < 0) && (num_bits >= (code_len + 1))); \ + if (temp >= 0) \ + break; \ + } \ + TINFL_GET_BYTE(state_index, c); \ + bit_buf |= (((tinfl_bit_buf_t) c) << num_bits); \ + num_bits += 8; \ + } while (num_bits < 15); + +/* TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's + * more complex than you would initially expect because the zlib API + * expects the decompressor to never read */ +/* beyond the final byte of the deflate stream. (In other words, when + * this macro wants to read another byte from the input, it REALLY + * needs another byte in order to fully */ +/* decode the next Huffman code.) Handling this properly is + * particularly important on raw deflate (non-zlib) streams, which + * aren't followed by a byte aligned adler-32. */ +/* The slow path is only executed at the very end of the input buffer. + */ +/* v1.16: The original macro handled the case at the very end of the + * passed-in input buffer, but we also need to handle the case where + * the user passes in 1+zillion bytes */ +/* following the deflate data and our non-conservative read-ahead path + * won't kick in here on this code. This is much trickier. */ +# define TINFL_HUFF_DECODE(state_index, sym, pLookUp, pTree) \ + do { \ + int temp; \ + mz_uint code_len, c; \ + if (num_bits < 15) { \ + if ((pIn_buf_end - pIn_buf_cur) < 2) { \ + TINFL_HUFF_BITBUF_FILL(state_index, pLookUp, pTree); \ + } else { \ + bit_buf |= (((tinfl_bit_buf_t) pIn_buf_cur[0]) \ + << num_bits) | \ + (((tinfl_bit_buf_t) pIn_buf_cur[1]) \ + << (num_bits + 8)); \ + pIn_buf_cur += 2; \ + num_bits += 16; \ + } \ + } \ + if ((temp = \ + pLookUp[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= \ + 0) \ + code_len = temp >> 9, temp &= 511; \ + else { \ + code_len = TINFL_FAST_LOOKUP_BITS; \ + do { \ + temp = pTree[~temp + ((bit_buf >> code_len++) & 1)]; \ + } while (temp < 0); \ + } \ + sym = temp; \ + bit_buf >>= code_len; \ + num_bits -= code_len; \ + } \ + MZ_MACRO_END + +static void tinfl_clear_tree(tinfl_decompressor *r) { + if (r->m_type == 0) + MZ_CLEAR_ARR(r->m_tree_0); + else if (r->m_type == 1) + MZ_CLEAR_ARR(r->m_tree_1); + else + MZ_CLEAR_ARR(r->m_tree_2); +} + +tinfl_status tinfl_decompress(tinfl_decompressor *r, + const mz_uint8 *pIn_buf_next, + size_t *pIn_buf_size, + mz_uint8 *pOut_buf_start, + mz_uint8 *pOut_buf_next, + size_t *pOut_buf_size, + const mz_uint32 decomp_flags) { + static const mz_uint16 s_length_base[31] = { + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, + 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, + 99, 115, 131, 163, 195, 227, 258, 0, 0 + }; + static const mz_uint8 s_length_extra[31] = { 0, 0, 0, 0, 0, 0, 0, 0, + 1, 1, 1, 1, 2, 2, 2, 2, + 3, 3, 3, 3, 4, 4, 4, 4, + 5, 5, 5, 5, 0, 0, 0 }; + static const mz_uint16 s_dist_base[32] = { + 1, 2, 3, 4, 5, 7, 9, 13, + 17, 25, 33, 49, 65, 97, 129, 193, + 257, 385, 513, 769, 1025, 1537, 2049, 3073, + 4097, 6145, 8193, 12289, 16385, 24577, 0, 0 + }; + static const mz_uint8 s_dist_extra[32] = { + 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, + 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13 + }; + static const mz_uint8 s_length_dezigzag[19] = { + 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 + }; + static const mz_uint16 s_min_table_sizes[3] = { 257, 1, 4 }; + + mz_int16 *pTrees[3]; + mz_uint8 *pCode_sizes[3]; + + tinfl_status status = TINFL_STATUS_FAILED; + mz_uint32 num_bits, dist, counter, num_extra; + tinfl_bit_buf_t bit_buf; + const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = + pIn_buf_next + + *pIn_buf_size; + mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = + pOut_buf_next + ? pOut_buf_next + + *pOut_buf_size + : NULL; + size_t out_buf_size_mask = + (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF) + ? (size_t) -1 + : ((pOut_buf_next - pOut_buf_start) + + *pOut_buf_size) - + 1, + dist_from_out_buf_start; + + /* Ensure the output buffer's size is a power of 2, unless the + * output buffer is large enough to hold the entire output file (in + * which case it doesn't matter). */ + if (((out_buf_size_mask + 1) & out_buf_size_mask) || + (pOut_buf_next < pOut_buf_start)) { + *pIn_buf_size = *pOut_buf_size = 0; + return TINFL_STATUS_BAD_PARAM; + } + + pTrees[0] = r->m_tree_0; + pTrees[1] = r->m_tree_1; + pTrees[2] = r->m_tree_2; + pCode_sizes[0] = r->m_code_size_0; + pCode_sizes[1] = r->m_code_size_1; + pCode_sizes[2] = r->m_code_size_2; + + num_bits = r->m_num_bits; + bit_buf = r->m_bit_buf; + dist = r->m_dist; + counter = r->m_counter; + num_extra = r->m_num_extra; + dist_from_out_buf_start = r->m_dist_from_out_buf_start; + TINFL_CR_BEGIN + + bit_buf = num_bits = dist = counter = num_extra = r->m_zhdr0 = + r->m_zhdr1 = 0; + r->m_z_adler32 = r->m_check_adler32 = 1; + if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) { + TINFL_GET_BYTE(1, r->m_zhdr0); + TINFL_GET_BYTE(2, r->m_zhdr1); + counter = (((r->m_zhdr0 * 256 + r->m_zhdr1) % 31 != 0) || + (r->m_zhdr1 & 32) || ((r->m_zhdr0 & 15) != 8)); + if (!(decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) + counter |= (((1U << (8U + (r->m_zhdr0 >> 4))) > 32768U) || + ((out_buf_size_mask + 1) < + (size_t) ((size_t) 1 + << (8U + (r->m_zhdr0 >> 4))))); + if (counter) { + TINFL_CR_RETURN_FOREVER(36, TINFL_STATUS_FAILED); + } + } + + do { + TINFL_GET_BITS(3, r->m_final, 3); + r->m_type = r->m_final >> 1; + if (r->m_type == 0) { + TINFL_SKIP_BITS(5, num_bits & 7); + for (counter = 0; counter < 4; ++counter) { + if (num_bits) + TINFL_GET_BITS(6, r->m_raw_header[counter], 8); + else + TINFL_GET_BYTE(7, r->m_raw_header[counter]); + } + if ((counter = (r->m_raw_header[0] | + (r->m_raw_header[1] << 8))) != + (mz_uint) (0xFFFF ^ (r->m_raw_header[2] | + (r->m_raw_header[3] << 8)))) { + TINFL_CR_RETURN_FOREVER(39, TINFL_STATUS_FAILED); + } + while ((counter) && (num_bits)) { + TINFL_GET_BITS(51, dist, 8); + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT); + } + *pOut_buf_cur++ = (mz_uint8) dist; + counter--; + } + while (counter) { + size_t n; + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT); + } + while (pIn_buf_cur >= pIn_buf_end) { + TINFL_CR_RETURN( + 38, (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) + ? TINFL_STATUS_NEEDS_MORE_INPUT + : TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS); + } + n = MZ_MIN(MZ_MIN((size_t) (pOut_buf_end - pOut_buf_cur), + (size_t) (pIn_buf_end - pIn_buf_cur)), + counter); + TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n); + pIn_buf_cur += n; + pOut_buf_cur += n; + counter -= (mz_uint) n; + } + } else if (r->m_type == 3) { + TINFL_CR_RETURN_FOREVER(10, TINFL_STATUS_FAILED); + } else { + if (r->m_type == 1) { + mz_uint8 *p = r->m_code_size_0; + mz_uint i; + r->m_table_sizes[0] = 288; + r->m_table_sizes[1] = 32; + TINFL_MEMSET(r->m_code_size_1, 5, 32); + for (i = 0; i <= 143; ++i) *p++ = 8; + for (; i <= 255; ++i) *p++ = 9; + for (; i <= 279; ++i) *p++ = 7; + for (; i <= 287; ++i) *p++ = 8; + } else { + for (counter = 0; counter < 3; counter++) { + TINFL_GET_BITS(11, r->m_table_sizes[counter], + "\05\05\04"[counter]); + r->m_table_sizes[counter] += s_min_table_sizes[counter]; + } + MZ_CLEAR_ARR(r->m_code_size_2); + for (counter = 0; counter < r->m_table_sizes[2]; counter++) { + mz_uint s; + TINFL_GET_BITS(14, s, 3); + r->m_code_size_2[s_length_dezigzag[counter]] = (mz_uint8) s; + } + r->m_table_sizes[2] = 19; + } + for (; (int) r->m_type >= 0; r->m_type--) { + int tree_next, tree_cur; + mz_int16 *pLookUp; + mz_int16 *pTree; + mz_uint8 *pCode_size; + mz_uint i, j, used_syms, total, sym_index, next_code[17], + total_syms[16]; + pLookUp = r->m_look_up[r->m_type]; + pTree = pTrees[r->m_type]; + pCode_size = pCode_sizes[r->m_type]; + MZ_CLEAR_ARR(total_syms); + TINFL_MEMSET(pLookUp, 0, sizeof(r->m_look_up[0])); + tinfl_clear_tree(r); + for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) + total_syms[pCode_size[i]]++; + used_syms = 0, total = 0; + next_code[0] = next_code[1] = 0; + for (i = 1; i <= 15; ++i) { + used_syms += total_syms[i]; + next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); + } + if ((65536 != total) && (used_syms > 1)) { + TINFL_CR_RETURN_FOREVER(35, TINFL_STATUS_FAILED); + } + for (tree_next = -1, sym_index = 0; + sym_index < r->m_table_sizes[r->m_type]; ++sym_index) { + mz_uint rev_code = 0, l, cur_code, + code_size = pCode_size[sym_index]; + if (!code_size) + continue; + cur_code = next_code[code_size]++; + for (l = code_size; l > 0; l--, cur_code >>= 1) + rev_code = (rev_code << 1) | (cur_code & 1); + if (code_size <= TINFL_FAST_LOOKUP_BITS) { + mz_int16 k = (mz_int16) ((code_size << 9) | sym_index); + while (rev_code < TINFL_FAST_LOOKUP_SIZE) { + pLookUp[rev_code] = k; + rev_code += (1 << code_size); + } + continue; + } + if (0 == + (tree_cur = pLookUp[rev_code & + (TINFL_FAST_LOOKUP_SIZE - 1)])) { + pLookUp[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = + (mz_int16) tree_next; + tree_cur = tree_next; + tree_next -= 2; + } + rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1); + for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--) { + tree_cur -= ((rev_code >>= 1) & 1); + if (!pTree[-tree_cur - 1]) { + pTree[-tree_cur - 1] = (mz_int16) tree_next; + tree_cur = tree_next; + tree_next -= 2; + } else + tree_cur = pTree[-tree_cur - 1]; + } + tree_cur -= ((rev_code >>= 1) & 1); + pTree[-tree_cur - 1] = (mz_int16) sym_index; + } + if (r->m_type == 2) { + for (counter = 0; counter < (r->m_table_sizes[0] + + r->m_table_sizes[1]);) { + mz_uint s; + TINFL_HUFF_DECODE(16, dist, r->m_look_up[2], r->m_tree_2); + if (dist < 16) { + r->m_len_codes[counter++] = (mz_uint8) dist; + continue; + } + if ((dist == 16) && (!counter)) { + TINFL_CR_RETURN_FOREVER(17, TINFL_STATUS_FAILED); + } + num_extra = "\02\03\07"[dist - 16]; + TINFL_GET_BITS(18, s, num_extra); + s += "\03\03\013"[dist - 16]; + TINFL_MEMSET( + r->m_len_codes + counter, + (dist == 16) ? r->m_len_codes[counter - 1] : 0, s); + counter += s; + } + if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != + counter) { + TINFL_CR_RETURN_FOREVER(21, TINFL_STATUS_FAILED); + } + TINFL_MEMCPY(r->m_code_size_0, r->m_len_codes, + r->m_table_sizes[0]); + TINFL_MEMCPY(r->m_code_size_1, + r->m_len_codes + r->m_table_sizes[0], + r->m_table_sizes[1]); + } + } + for (;;) { + mz_uint8 *pSrc; + for (;;) { + if (((pIn_buf_end - pIn_buf_cur) < 4) || + ((pOut_buf_end - pOut_buf_cur) < 2)) { + TINFL_HUFF_DECODE(23, counter, r->m_look_up[0], + r->m_tree_0); + if (counter >= 256) + break; + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT); + } + *pOut_buf_cur++ = (mz_uint8) counter; + } else { + int sym2; + mz_uint code_len; +# if TINFL_USE_64BIT_BITBUF + if (num_bits < 30) { + bit_buf |= + (((tinfl_bit_buf_t) MZ_READ_LE32(pIn_buf_cur)) + << num_bits); + pIn_buf_cur += 4; + num_bits += 32; + } +# else + if (num_bits < 15) { + bit_buf |= + (((tinfl_bit_buf_t) MZ_READ_LE16(pIn_buf_cur)) + << num_bits); + pIn_buf_cur += 2; + num_bits += 16; + } +# endif + if ((sym2 = + r->m_look_up[0][bit_buf & + (TINFL_FAST_LOOKUP_SIZE - 1)]) >= + 0) + code_len = sym2 >> 9; + else { + code_len = TINFL_FAST_LOOKUP_BITS; + do { + sym2 = r->m_tree_0[~sym2 + + ((bit_buf >> code_len++) & 1)]; + } while (sym2 < 0); + } + counter = sym2; + bit_buf >>= code_len; + num_bits -= code_len; + if (counter & 256) + break; + +# if !TINFL_USE_64BIT_BITBUF + if (num_bits < 15) { + bit_buf |= + (((tinfl_bit_buf_t) MZ_READ_LE16(pIn_buf_cur)) + << num_bits); + pIn_buf_cur += 2; + num_bits += 16; + } +# endif + if ((sym2 = + r->m_look_up[0][bit_buf & + (TINFL_FAST_LOOKUP_SIZE - 1)]) >= + 0) + code_len = sym2 >> 9; + else { + code_len = TINFL_FAST_LOOKUP_BITS; + do { + sym2 = r->m_tree_0[~sym2 + + ((bit_buf >> code_len++) & 1)]; + } while (sym2 < 0); + } + bit_buf >>= code_len; + num_bits -= code_len; + + pOut_buf_cur[0] = (mz_uint8) counter; + if (sym2 & 256) { + pOut_buf_cur++; + counter = sym2; + break; + } + pOut_buf_cur[1] = (mz_uint8) sym2; + pOut_buf_cur += 2; + } + } + if ((counter &= 511) == 256) + break; + + num_extra = s_length_extra[counter - 257]; + counter = s_length_base[counter - 257]; + if (num_extra) { + mz_uint extra_bits; + TINFL_GET_BITS(25, extra_bits, num_extra); + counter += extra_bits; + } + + TINFL_HUFF_DECODE(26, dist, r->m_look_up[1], r->m_tree_1); + num_extra = s_dist_extra[dist]; + dist = s_dist_base[dist]; + if (num_extra) { + mz_uint extra_bits; + TINFL_GET_BITS(27, extra_bits, num_extra); + dist += extra_bits; + } + + dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start; + if ((dist == 0 || dist > dist_from_out_buf_start || + dist_from_out_buf_start == 0) && + (decomp_flags & + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) { + TINFL_CR_RETURN_FOREVER(37, TINFL_STATUS_FAILED); + } + + pSrc = pOut_buf_start + + ((dist_from_out_buf_start - dist) & out_buf_size_mask); + + if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end) { + while (counter--) { + while (pOut_buf_cur >= pOut_buf_end) { + TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT); + } + *pOut_buf_cur++ = + pOut_buf_start[(dist_from_out_buf_start++ - dist) & + out_buf_size_mask]; + } + continue; + } +# if MINIZ_USE_UNALIGNED_LOADS_AND_STORES + else if ((counter >= 9) && (counter <= dist)) { + const mz_uint8 *pSrc_end = pSrc + (counter & ~7); + do { +# ifdef MINIZ_UNALIGNED_USE_MEMCPY + memcpy(pOut_buf_cur, pSrc, sizeof(mz_uint32) * 2); +# else + ((mz_uint32 *) pOut_buf_cur)[0] = (( + const mz_uint32 *) pSrc)[0]; + ((mz_uint32 *) pOut_buf_cur)[1] = (( + const mz_uint32 *) pSrc)[1]; +# endif + pOut_buf_cur += 8; + } while ((pSrc += 8) < pSrc_end); + if ((counter &= 7) < 3) { + if (counter) { + pOut_buf_cur[0] = pSrc[0]; + if (counter > 1) + pOut_buf_cur[1] = pSrc[1]; + pOut_buf_cur += counter; + } + continue; + } + } +# endif + while (counter > 2) { + pOut_buf_cur[0] = pSrc[0]; + pOut_buf_cur[1] = pSrc[1]; + pOut_buf_cur[2] = pSrc[2]; + pOut_buf_cur += 3; + pSrc += 3; + counter -= 3; + } + if (counter > 0) { + pOut_buf_cur[0] = pSrc[0]; + if (counter > 1) + pOut_buf_cur[1] = pSrc[1]; + pOut_buf_cur += counter; + } + } + } + } while (!(r->m_final & 1)); + + /* Ensure byte alignment and put back any bytes from the bitbuf if + * we've looked ahead too far on gzip, or other Deflate streams + * followed by arbitrary data. */ + /* I'm being super conservative here. A number of simplifications + * can be made to the byte alignment part, and the Adler32 check + * shouldn't ever need to worry about reading from the bitbuf now. + */ + TINFL_SKIP_BITS(32, num_bits & 7); + while ((pIn_buf_cur > pIn_buf_next) && (num_bits >= 8)) { + --pIn_buf_cur; + num_bits -= 8; + } + bit_buf &= ~(~(tinfl_bit_buf_t) 0 << num_bits); + MZ_ASSERT(!num_bits); /* if this assert fires then we've read beyond + the end of non-deflate/zlib streams with + following data (such as gzip streams). */ + + if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) { + for (counter = 0; counter < 4; ++counter) { + mz_uint s; + if (num_bits) + TINFL_GET_BITS(41, s, 8); + else + TINFL_GET_BYTE(42, s); + r->m_z_adler32 = (r->m_z_adler32 << 8) | s; + } + } + TINFL_CR_RETURN_FOREVER(34, TINFL_STATUS_DONE); + + TINFL_CR_FINISH + +common_exit: + /* As long as we aren't telling the caller that we NEED more input + * to make forward progress: */ + /* Put back any bytes from the bitbuf in case we've looked ahead too + * far on gzip, or other Deflate streams followed by arbitrary data. + */ + /* We need to be very careful here to NOT push back any bytes we + * definitely know we need to make forward progress, though, or + * we'll lock the caller up into an inf loop. */ + if ((status != TINFL_STATUS_NEEDS_MORE_INPUT) && + (status != TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS)) { + while ((pIn_buf_cur > pIn_buf_next) && (num_bits >= 8)) { + --pIn_buf_cur; + num_bits -= 8; + } + } + r->m_num_bits = num_bits; + r->m_bit_buf = bit_buf & ~(~(tinfl_bit_buf_t) 0 << num_bits); + r->m_dist = dist; + r->m_counter = counter; + r->m_num_extra = num_extra; + r->m_dist_from_out_buf_start = dist_from_out_buf_start; + *pIn_buf_size = pIn_buf_cur - pIn_buf_next; + *pOut_buf_size = pOut_buf_cur - pOut_buf_next; + if ((decomp_flags & + (TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32)) && + (status >= 0)) { + const mz_uint8 *ptr = pOut_buf_next; + size_t buf_len = *pOut_buf_size; + mz_uint32 i, s1 = r->m_check_adler32 & 0xffff, + s2 = r->m_check_adler32 >> 16; + size_t block_len = buf_len % 5552; + while (buf_len) { + for (i = 0; i + 7 < block_len; i += 8, ptr += 8) { + s1 += ptr[0], s2 += s1; + s1 += ptr[1], s2 += s1; + s1 += ptr[2], s2 += s1; + s1 += ptr[3], s2 += s1; + s1 += ptr[4], s2 += s1; + s1 += ptr[5], s2 += s1; + s1 += ptr[6], s2 += s1; + s1 += ptr[7], s2 += s1; + } + for (; i < block_len; ++i) s1 += *ptr++, s2 += s1; + s1 %= 65521U, s2 %= 65521U; + buf_len -= block_len; + block_len = 5552; + } + r->m_check_adler32 = (s2 << 16) + s1; + if ((status == TINFL_STATUS_DONE) && + (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) && + (r->m_check_adler32 != r->m_z_adler32)) + status = TINFL_STATUS_ADLER32_MISMATCH; + } + return status; +} + +/* Higher level helper functions. */ +void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, + size_t src_buf_len, + size_t *pOut_len, int flags) { + tinfl_decompressor decomp; + void *pBuf = NULL, *pNew_buf; + size_t src_buf_ofs = 0, out_buf_capacity = 0; + *pOut_len = 0; + tinfl_init(&decomp); + for (;;) { + size_t src_buf_size = src_buf_len - src_buf_ofs, + dst_buf_size = out_buf_capacity - *pOut_len, + new_out_buf_capacity; + tinfl_status status = tinfl_decompress( + &decomp, (const mz_uint8 *) pSrc_buf + src_buf_ofs, + &src_buf_size, (mz_uint8 *) pBuf, + pBuf ? (mz_uint8 *) pBuf + *pOut_len : NULL, &dst_buf_size, + (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF); + if ((status < 0) || (status == TINFL_STATUS_NEEDS_MORE_INPUT)) { + MZ_FREE(pBuf); + *pOut_len = 0; + return NULL; + } + src_buf_ofs += src_buf_size; + *pOut_len += dst_buf_size; + if (status == TINFL_STATUS_DONE) + break; + new_out_buf_capacity = out_buf_capacity * 2; + if (new_out_buf_capacity < 128) + new_out_buf_capacity = 128; + pNew_buf = MZ_REALLOC(pBuf, new_out_buf_capacity); + if (!pNew_buf) { + MZ_FREE(pBuf); + *pOut_len = 0; + return NULL; + } + pBuf = pNew_buf; + out_buf_capacity = new_out_buf_capacity; + } + return pBuf; +} + +size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, + const void *pSrc_buf, + size_t src_buf_len, int flags) { + tinfl_decompressor decomp; + tinfl_status status; + tinfl_init(&decomp); + status = tinfl_decompress( + &decomp, (const mz_uint8 *) pSrc_buf, &src_buf_len, + (mz_uint8 *) pOut_buf, (mz_uint8 *) pOut_buf, &out_buf_len, + (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF); + return (status != TINFL_STATUS_DONE) + ? TINFL_DECOMPRESS_MEM_TO_MEM_FAILED + : out_buf_len; +} + +int tinfl_decompress_mem_to_callback( + const void *pIn_buf, size_t *pIn_buf_size, + tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, + int flags) { + int result = 0; + tinfl_decompressor decomp; + mz_uint8 *pDict = (mz_uint8 *) MZ_MALLOC(TINFL_LZ_DICT_SIZE); + size_t in_buf_ofs = 0, dict_ofs = 0; + if (!pDict) + return TINFL_STATUS_FAILED; + memset(pDict, 0, TINFL_LZ_DICT_SIZE); + tinfl_init(&decomp); + for (;;) { + size_t in_buf_size = *pIn_buf_size - in_buf_ofs, + dst_buf_size = TINFL_LZ_DICT_SIZE - dict_ofs; + tinfl_status status = tinfl_decompress( + &decomp, (const mz_uint8 *) pIn_buf + in_buf_ofs, + &in_buf_size, pDict, pDict + dict_ofs, &dst_buf_size, + (flags & ~(TINFL_FLAG_HAS_MORE_INPUT | + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF))); + in_buf_ofs += in_buf_size; + if ((dst_buf_size) && + (!(*pPut_buf_func)(pDict + dict_ofs, (int) dst_buf_size, + pPut_buf_user))) + break; + if (status != TINFL_STATUS_HAS_MORE_OUTPUT) { + result = (status == TINFL_STATUS_DONE); + break; + } + dict_ofs = (dict_ofs + dst_buf_size) & (TINFL_LZ_DICT_SIZE - 1); + } + MZ_FREE(pDict); + *pIn_buf_size = in_buf_ofs; + return result; +} + +# ifndef MINIZ_NO_MALLOC +tinfl_decompressor *tinfl_decompressor_alloc(void) { + tinfl_decompressor *pDecomp = (tinfl_decompressor *) MZ_MALLOC( + sizeof(tinfl_decompressor)); + if (pDecomp) + tinfl_init(pDecomp); + return pDecomp; +} + +void tinfl_decompressor_free(tinfl_decompressor *pDecomp) { + MZ_FREE(pDecomp); +} +# endif + +# ifdef __cplusplus +} +# endif + +#endif /*#ifndef MINIZ_NO_INFLATE_APIS*/ diff --git a/source/kit/miniz/miniz_tinfl.h b/source/kit/miniz/miniz_tinfl.h new file mode 100644 index 0000000..14da110 --- /dev/null +++ b/source/kit/miniz/miniz_tinfl.h @@ -0,0 +1,218 @@ +#ifndef KIT_MINIZ_MINIZ_TINFL_H +#define KIT_MINIZ_MINIZ_TINFL_H + +#include "miniz_common.h" +/* ------------------- Low-level Decompression API Definitions */ + +#ifndef MINIZ_NO_INFLATE_APIS + +# ifdef __cplusplus +extern "C" { +# endif +/* Decompression flags used by tinfl_decompress(). */ +/* TINFL_FLAG_PARSE_ZLIB_HEADER: If set, the input has a valid zlib + * header and ends with an adler32 checksum (it's a valid zlib + * stream). Otherwise, the input is a raw deflate stream. */ +/* TINFL_FLAG_HAS_MORE_INPUT: If set, there are more input bytes + * available beyond the end of the supplied input buffer. If clear, + * the input buffer contains all remaining input. */ +/* TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF: If set, the output buffer + * is large enough to hold the entire decompressed stream. If clear, + * the output buffer is at least the size of the dictionary (typically + * 32KB). */ +/* TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of + * the decompressed bytes. */ +enum { + TINFL_FLAG_PARSE_ZLIB_HEADER = 1, + TINFL_FLAG_HAS_MORE_INPUT = 2, + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4, + TINFL_FLAG_COMPUTE_ADLER32 = 8 +}; + +/* High level decompression functions: */ +/* tinfl_decompress_mem_to_heap() decompresses a block in memory to a + * heap block allocated via malloc(). */ +/* On entry: */ +/* pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib + * source data to decompress. */ +/* On return: */ +/* Function returns a pointer to the decompressed data, or NULL on + * failure. */ +/* *pOut_len will be set to the decompressed data's size, which could + * be larger than src_buf_len on uncompressible data. */ +/* The caller must call mz_free() on the returned block when it's no + * longer needed. */ +void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, + size_t src_buf_len, + size_t *pOut_len, int flags); + +/* tinfl_decompress_mem_to_mem() decompresses a block in memory to + * another block in memory. */ +/* Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the + * number of bytes written on success. */ +# define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t) (-1)) +size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, + const void *pSrc_buf, + size_t src_buf_len, int flags); + +/* tinfl_decompress_mem_to_callback() decompresses a block in memory + * to an internal 32KB buffer, and a user provided callback function + * will be called to flush the buffer. */ +/* Returns 1 on success or 0 on failure. */ +typedef int (*tinfl_put_buf_func_ptr)(const void *pBuf, int len, + void *pUser); +int tinfl_decompress_mem_to_callback( + const void *pIn_buf, size_t *pIn_buf_size, + tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, + int flags); + +struct tinfl_decompressor_tag; +typedef struct tinfl_decompressor_tag tinfl_decompressor; + +# ifndef MINIZ_NO_MALLOC +/* Allocate the tinfl_decompressor structure in C so that */ +/* non-C language bindings to tinfl_ API don't need to worry about */ +/* structure size and allocation mechanism. */ +tinfl_decompressor *tinfl_decompressor_alloc(void); +void tinfl_decompressor_free(tinfl_decompressor *pDecomp); +# endif + +/* Max size of LZ dictionary. */ +# define TINFL_LZ_DICT_SIZE 32768 + +/* Return status. */ +typedef enum { + /* This flags indicates the inflator needs 1 or more input bytes to + make forward progress, but the caller is indicating that no more + are available. The compressed data */ + /* is probably corrupted. If you call the inflator again with more + bytes it'll try to continue processing the input but this is a + BAD sign (either the data is corrupted or you called it + incorrectly). */ + /* If you call it again with no input you'll just get + TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS again. */ + TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS = -4, + + /* This flag indicates that one or more of the input parameters was + obviously bogus. (You can try calling it again, but if you get + this error the calling code is wrong.) */ + TINFL_STATUS_BAD_PARAM = -3, + + /* This flags indicate the inflator is finished but the adler32 + check of the uncompressed data didn't match. If you call it again + it'll return TINFL_STATUS_DONE. */ + TINFL_STATUS_ADLER32_MISMATCH = -2, + + /* This flags indicate the inflator has somehow failed (bad code, + corrupted input, etc.). If you call it again without resetting + via tinfl_init() it it'll just keep on returning the same status + failure code. */ + TINFL_STATUS_FAILED = -1, + + /* Any status code less than TINFL_STATUS_DONE must indicate a + failure. */ + + /* This flag indicates the inflator has returned every byte of + uncompressed data that it can, has consumed every byte that it + needed, has successfully reached the end of the deflate stream, + and */ + /* if zlib headers and adler32 checking enabled that it has + successfully checked the uncompressed data's adler32. If you call + it again you'll just get TINFL_STATUS_DONE over and over again. + */ + TINFL_STATUS_DONE = 0, + + /* This flag indicates the inflator MUST have more input data (even + 1 byte) before it can make any more forward progress, or you need + to clear the TINFL_FLAG_HAS_MORE_INPUT */ + /* flag on the next call if you don't have any more source data. If + the source data was somehow corrupted it's also possible (but + unlikely) for the inflator to keep on demanding input to */ + /* proceed, so be sure to properly set the TINFL_FLAG_HAS_MORE_INPUT + flag. */ + TINFL_STATUS_NEEDS_MORE_INPUT = 1, + + /* This flag indicates the inflator definitely has 1 or more bytes + of uncompressed data available, but it cannot write this data + into the output buffer. */ + /* Note if the source compressed data was corrupted it's possible + for the inflator to return a lot of uncompressed data to the + caller. I've been assuming you know how much uncompressed data to + expect */ + /* (either exact or worst case) and will stop calling the inflator + and fail after receiving too much. In pure streaming scenarios + where you have no idea how many bytes to expect this may not be + possible */ + /* so I may need to add some code to address this. */ + TINFL_STATUS_HAS_MORE_OUTPUT = 2 +} tinfl_status; + +/* Initializes the decompressor to its initial state. */ +# define tinfl_init(r) \ + do { (r)->m_state = 0; } \ + MZ_MACRO_END +# define tinfl_get_adler32(r) (r)->m_check_adler32 + +/* Main low-level decompressor coroutine function. This is the only + * function actually needed for decompression. All the other functions + * are just high-level helpers for improved usability. */ +/* This is a universal API, i.e. it can be used as a building block to + * build any desired higher level decompression API. In the limit + * case, it can be called once per every byte input or output. */ +tinfl_status tinfl_decompress(tinfl_decompressor *r, + const mz_uint8 *pIn_buf_next, + size_t *pIn_buf_size, + mz_uint8 *pOut_buf_start, + mz_uint8 *pOut_buf_next, + size_t *pOut_buf_size, + const mz_uint32 decomp_flags); + +/* Internal/private bits follow. */ +enum { + TINFL_MAX_HUFF_TABLES = 3, + TINFL_MAX_HUFF_SYMBOLS_0 = 288, + TINFL_MAX_HUFF_SYMBOLS_1 = 32, + TINFL_MAX_HUFF_SYMBOLS_2 = 19, + TINFL_FAST_LOOKUP_BITS = 10, + TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS +}; + +# if MINIZ_HAS_64BIT_REGISTERS +# define TINFL_USE_64BIT_BITBUF 1 +# else +# define TINFL_USE_64BIT_BITBUF 0 +# endif + +# if TINFL_USE_64BIT_BITBUF +typedef mz_uint64 tinfl_bit_buf_t; +# define TINFL_BITBUF_SIZE (64) +# else +typedef mz_uint32 tinfl_bit_buf_t; +# define TINFL_BITBUF_SIZE (32) +# endif + +struct tinfl_decompressor_tag { + mz_uint32 m_state, m_num_bits, m_zhdr0, m_zhdr1, m_z_adler32, + m_final, m_type, m_check_adler32, m_dist, m_counter, + m_num_extra, m_table_sizes[TINFL_MAX_HUFF_TABLES]; + tinfl_bit_buf_t m_bit_buf; + size_t m_dist_from_out_buf_start; + mz_int16 m_look_up[TINFL_MAX_HUFF_TABLES][TINFL_FAST_LOOKUP_SIZE]; + mz_int16 m_tree_0[TINFL_MAX_HUFF_SYMBOLS_0 * 2]; + mz_int16 m_tree_1[TINFL_MAX_HUFF_SYMBOLS_1 * 2]; + mz_int16 m_tree_2[TINFL_MAX_HUFF_SYMBOLS_2 * 2]; + mz_uint8 m_code_size_0[TINFL_MAX_HUFF_SYMBOLS_0]; + mz_uint8 m_code_size_1[TINFL_MAX_HUFF_SYMBOLS_1]; + mz_uint8 m_code_size_2[TINFL_MAX_HUFF_SYMBOLS_2]; + mz_uint8 m_raw_header[4], + m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + + TINFL_MAX_HUFF_SYMBOLS_1 + 137]; +}; + +# ifdef __cplusplus +} +# endif + +#endif /*#ifndef MINIZ_NO_INFLATE_APIS*/ + +#endif diff --git a/source/kit/miniz/miniz_zip.c b/source/kit/miniz/miniz_zip.c new file mode 100644 index 0000000..0af4bf0 --- /dev/null +++ b/source/kit/miniz/miniz_zip.c @@ -0,0 +1,5473 @@ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * Copyright 2016 Martin Raiber + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person + *obtaining a copy of this software and associated documentation files + *(the "Software"), to deal in the Software without restriction, + *including without limitation the rights to use, copy, modify, merge, + *publish, distribute, sublicense, and/or sell copies of the Software, + *and to permit persons to whom the Software is furnished to do so, + *subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + *included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + *NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + *BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + *ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + *CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + *SOFTWARE. + * + **************************************************************************/ +#include "miniz.h" + +#ifndef MINIZ_NO_ARCHIVE_APIS + +# ifdef __cplusplus +extern "C" { +# endif + +/* ------------------- .ZIP archive reading */ + +# ifdef MINIZ_NO_STDIO +# define MZ_FILE void * +# else +# include <stdio.h> +# include <sys/stat.h> + +# if defined(_MSC_VER) || defined(__MINGW64__) || \ + defined(__MINGW32__) + +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# ifndef __cplusplus +# define MICROSOFT_WINDOWS_WINBASE_H_DEFINE_INTERLOCKED_CPLUSPLUS_OVERLOADS \ + 0 +# endif +# ifndef NOMINMAX +# define NOMINMAX +# endif +# include <windows.h> + +static WCHAR *mz_utf8z_to_widechar(const char *str) { + int reqChars = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0); + WCHAR *wStr = (WCHAR *) malloc(reqChars * sizeof(WCHAR)); + MultiByteToWideChar(CP_UTF8, 0, str, -1, wStr, reqChars); + return wStr; +} + +static FILE *mz_fopen(const char *pFilename, const char *pMode) { + WCHAR *wFilename = mz_utf8z_to_widechar(pFilename); + WCHAR *wMode = mz_utf8z_to_widechar(pMode); + FILE *pFile = NULL; + errno_t err = _wfopen_s(&pFile, wFilename, wMode); + free(wFilename); + free(wMode); + return err ? NULL : pFile; +} + +static FILE *mz_freopen(const char *pPath, const char *pMode, + FILE *pStream) { + WCHAR *wPath = mz_utf8z_to_widechar(pPath); + WCHAR *wMode = mz_utf8z_to_widechar(pMode); + FILE *pFile = NULL; + errno_t err = _wfreopen_s(&pFile, wPath, wMode, pStream); + free(wPath); + free(wMode); + return err ? NULL : pFile; +} + +# if defined(__MINGW32__) +static int mz_stat(const char *path, struct _stat *buffer) { + WCHAR *wPath = mz_utf8z_to_widechar(path); + int res = _wstat(wPath, buffer); + free(wPath); + return res; +} +# else +static int mz_stat64(const char *path, struct __stat64 *buffer) { + WCHAR *wPath = mz_utf8z_to_widechar(path); + int res = _wstat64(wPath, buffer); + free(wPath); + return res; +} +# endif + +# ifndef MINIZ_NO_TIME +# include <sys/utime.h> +# endif +# define MZ_FOPEN mz_fopen +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 _ftelli64 +# define MZ_FSEEK64 _fseeki64 +# if defined(__MINGW32__) +# define MZ_FILE_STAT_STRUCT _stat +# define MZ_FILE_STAT mz_stat +# else +# define MZ_FILE_STAT_STRUCT _stat64 +# define MZ_FILE_STAT mz_stat64 +# endif +# define MZ_FFLUSH fflush +# define MZ_FREOPEN mz_freopen +# define MZ_DELETE_FILE remove + +# elif defined(__WATCOMC__) +# ifndef MINIZ_NO_TIME +# include <sys/utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 _ftelli64 +# define MZ_FSEEK64 _fseeki64 +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(f, m, s) freopen(f, m, s) +# define MZ_DELETE_FILE remove + +# elif defined(__TINYC__) +# ifndef MINIZ_NO_TIME +# include <sys/utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 ftell +# define MZ_FSEEK64 fseek +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(f, m, s) freopen(f, m, s) +# define MZ_DELETE_FILE remove + +# elif defined(__USE_LARGEFILE64) /* gcc, clang */ +# ifndef MINIZ_NO_TIME +# include <utime.h> +# endif +# define MZ_FOPEN(f, m) fopen64(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 ftello64 +# define MZ_FSEEK64 fseeko64 +# define MZ_FILE_STAT_STRUCT stat64 +# define MZ_FILE_STAT stat64 +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(p, m, s) freopen64(p, m, s) +# define MZ_DELETE_FILE remove + +# elif defined(__APPLE__) || defined(__FreeBSD__) || \ + (defined(__linux__) && defined(__x86_64__)) +# ifndef MINIZ_NO_TIME +# include <utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 ftello +# define MZ_FSEEK64 fseeko +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(p, m, s) freopen(p, m, s) +# define MZ_DELETE_FILE remove + +# else +# pragma message( \ + "Using fopen, ftello, fseeko, stat() etc. path for file I/O - this path may not support large files.") +# ifndef MINIZ_NO_TIME +# include <utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# ifdef __STRICT_ANSI__ +# define MZ_FTELL64 ftell +# define MZ_FSEEK64 fseek +# else +# define MZ_FTELL64 ftello +# define MZ_FSEEK64 fseeko +# endif +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(f, m, s) freopen(f, m, s) +# define MZ_DELETE_FILE remove +# endif /* #ifdef _MSC_VER */ +# endif /* #ifdef MINIZ_NO_STDIO */ + +# define MZ_TOLOWER(c) \ + ((((c) >= 'A') && ((c) <= 'Z')) ? ((c) - 'A' + 'a') : (c)) + +/* Various ZIP archive enums. To completely avoid cross platform + * compiler alignment and platform endian issues, miniz.c doesn't use + * structs for any of this stuff. */ +enum { + /* ZIP archive identifiers and record sizes */ + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06054b50, + MZ_ZIP_CENTRAL_DIR_HEADER_SIG = 0x02014b50, + MZ_ZIP_LOCAL_DIR_HEADER_SIG = 0x04034b50, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE = 30, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE = 46, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE = 22, + + /* ZIP64 archive identifier and record sizes */ + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06064b50, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG = 0x07064b50, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE = 56, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE = 20, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID = 0x0001, + MZ_ZIP_DATA_DESCRIPTOR_ID = 0x08074b50, + MZ_ZIP_DATA_DESCRIPTER_SIZE64 = 24, + MZ_ZIP_DATA_DESCRIPTER_SIZE32 = 16, + + /* Central directory header record offsets */ + MZ_ZIP_CDH_SIG_OFS = 0, + MZ_ZIP_CDH_VERSION_MADE_BY_OFS = 4, + MZ_ZIP_CDH_VERSION_NEEDED_OFS = 6, + MZ_ZIP_CDH_BIT_FLAG_OFS = 8, + MZ_ZIP_CDH_METHOD_OFS = 10, + MZ_ZIP_CDH_FILE_TIME_OFS = 12, + MZ_ZIP_CDH_FILE_DATE_OFS = 14, + MZ_ZIP_CDH_CRC32_OFS = 16, + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS = 20, + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS = 24, + MZ_ZIP_CDH_FILENAME_LEN_OFS = 28, + MZ_ZIP_CDH_EXTRA_LEN_OFS = 30, + MZ_ZIP_CDH_COMMENT_LEN_OFS = 32, + MZ_ZIP_CDH_DISK_START_OFS = 34, + MZ_ZIP_CDH_INTERNAL_ATTR_OFS = 36, + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS = 38, + MZ_ZIP_CDH_LOCAL_HEADER_OFS = 42, + + /* Local directory header offsets */ + MZ_ZIP_LDH_SIG_OFS = 0, + MZ_ZIP_LDH_VERSION_NEEDED_OFS = 4, + MZ_ZIP_LDH_BIT_FLAG_OFS = 6, + MZ_ZIP_LDH_METHOD_OFS = 8, + MZ_ZIP_LDH_FILE_TIME_OFS = 10, + MZ_ZIP_LDH_FILE_DATE_OFS = 12, + MZ_ZIP_LDH_CRC32_OFS = 14, + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS = 18, + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS = 22, + MZ_ZIP_LDH_FILENAME_LEN_OFS = 26, + MZ_ZIP_LDH_EXTRA_LEN_OFS = 28, + MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR = 1 << 3, + + /* End of central directory offsets */ + MZ_ZIP_ECDH_SIG_OFS = 0, + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS = 4, + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS = 6, + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 8, + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS = 10, + MZ_ZIP_ECDH_CDIR_SIZE_OFS = 12, + MZ_ZIP_ECDH_CDIR_OFS_OFS = 16, + MZ_ZIP_ECDH_COMMENT_SIZE_OFS = 20, + + /* ZIP64 End of central directory locator offsets */ + MZ_ZIP64_ECDL_SIG_OFS = 0, /* 4 bytes */ + MZ_ZIP64_ECDL_NUM_DISK_CDIR_OFS = 4, /* 4 bytes */ + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS = 8, /* 8 bytes */ + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS = 16, /* 4 bytes */ + + /* ZIP64 End of central directory header offsets */ + MZ_ZIP64_ECDH_SIG_OFS = 0, /* 4 bytes */ + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS = 4, /* 8 bytes */ + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS = 12, /* 2 bytes */ + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS = 14, /* 2 bytes */ + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS = 16, /* 4 bytes */ + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS = 20, /* 4 bytes */ + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 24, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS = 32, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_SIZE_OFS = 40, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_OFS_OFS = 48, /* 8 bytes */ + MZ_ZIP_VERSION_MADE_BY_DOS_FILESYSTEM_ID = 0, + MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG = 0x10, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED = 1, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG = 32, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION = 64, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED = 8192, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8 = 1 << 11 +}; + +typedef struct { + void *m_p; + size_t m_size, m_capacity; + mz_uint m_element_size; +} mz_zip_array; + +struct mz_zip_internal_state_tag { + mz_zip_array m_central_dir; + mz_zip_array m_central_dir_offsets; + mz_zip_array m_sorted_central_dir_offsets; + + /* The flags passed in when the archive is initially opened. */ + mz_uint32 m_init_flags; + + /* MZ_TRUE if the archive has a zip64 end of central directory + * headers, etc. */ + mz_bool m_zip64; + + /* MZ_TRUE if we found zip64 extended info in the central directory + * (m_zip64 will also be slammed to true too, even if we didn't find + * a zip64 end of central dir header, etc.) */ + mz_bool m_zip64_has_extended_info_fields; + + /* These fields are used by the file, FILE, memory, and memory/heap + * read/write helpers. */ + MZ_FILE *m_pFile; + mz_uint64 m_file_archive_start_ofs; + + void *m_pMem; + size_t m_mem_size; + size_t m_mem_capacity; +}; + +# define MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(array_ptr, element_size) \ + (array_ptr)->m_element_size = element_size + +# if defined(DEBUG) || defined(_DEBUG) +static MZ_FORCEINLINE mz_uint +mz_zip_array_range_check(const mz_zip_array *pArray, mz_uint index) { + MZ_ASSERT(index < pArray->m_size); + return index; +} +# define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \ + ((element_type *) ((array_ptr)->m_p)) \ + [mz_zip_array_range_check(array_ptr, index)] +# else +# define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \ + ((element_type *) ((array_ptr)->m_p))[index] +# endif + +static MZ_FORCEINLINE void mz_zip_array_init(mz_zip_array *pArray, + mz_uint32 element_size) { + memset(pArray, 0, sizeof(mz_zip_array)); + pArray->m_element_size = element_size; +} + +static MZ_FORCEINLINE void mz_zip_array_clear(mz_zip_archive *pZip, + mz_zip_array *pArray) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pArray->m_p); + memset(pArray, 0, sizeof(mz_zip_array)); +} + +static mz_bool mz_zip_array_ensure_capacity(mz_zip_archive *pZip, + mz_zip_array *pArray, + size_t min_new_capacity, + mz_uint growing) { + void *pNew_p; + size_t new_capacity = min_new_capacity; + MZ_ASSERT(pArray->m_element_size); + if (pArray->m_capacity >= min_new_capacity) + return MZ_TRUE; + if (growing) { + new_capacity = MZ_MAX(1, pArray->m_capacity); + while (new_capacity < min_new_capacity) new_capacity *= 2; + } + if (NULL == (pNew_p = pZip->m_pRealloc( + pZip->m_pAlloc_opaque, pArray->m_p, + pArray->m_element_size, new_capacity))) + return MZ_FALSE; + pArray->m_p = pNew_p; + pArray->m_capacity = new_capacity; + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_array_reserve(mz_zip_archive *pZip, mz_zip_array *pArray, + size_t new_capacity, mz_uint growing) { + if (new_capacity > pArray->m_capacity) { + if (!mz_zip_array_ensure_capacity(pZip, pArray, new_capacity, + growing)) + return MZ_FALSE; + } + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_array_resize(mz_zip_archive *pZip, mz_zip_array *pArray, + size_t new_size, mz_uint growing) { + if (new_size > pArray->m_capacity) { + if (!mz_zip_array_ensure_capacity(pZip, pArray, new_size, + growing)) + return MZ_FALSE; + } + pArray->m_size = new_size; + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_array_ensure_room( + mz_zip_archive *pZip, mz_zip_array *pArray, size_t n) { + return mz_zip_array_reserve(pZip, pArray, pArray->m_size + n, + MZ_TRUE); +} + +static MZ_FORCEINLINE mz_bool +mz_zip_array_push_back(mz_zip_archive *pZip, mz_zip_array *pArray, + const void *pElements, size_t n) { + size_t orig_size = pArray->m_size; + if (!mz_zip_array_resize(pZip, pArray, orig_size + n, MZ_TRUE)) + return MZ_FALSE; + if (n > 0) + memcpy((mz_uint8 *) pArray->m_p + + orig_size * pArray->m_element_size, + pElements, n * pArray->m_element_size); + return MZ_TRUE; +} + +# ifndef MINIZ_NO_TIME +static MZ_TIME_T mz_zip_dos_to_time_t(int dos_time, int dos_date) { + struct tm tm; + memset(&tm, 0, sizeof(tm)); + tm.tm_isdst = -1; + tm.tm_year = ((dos_date >> 9) & 127) + 1980 - 1900; + tm.tm_mon = ((dos_date >> 5) & 15) - 1; + tm.tm_mday = dos_date & 31; + tm.tm_hour = (dos_time >> 11) & 31; + tm.tm_min = (dos_time >> 5) & 63; + tm.tm_sec = (dos_time << 1) & 62; + return mktime(&tm); +} + +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS +static void mz_zip_time_t_to_dos_time(MZ_TIME_T time, + mz_uint16 *pDOS_time, + mz_uint16 *pDOS_date) { +# ifdef _MSC_VER + struct tm tm_struct; + struct tm *tm = &tm_struct; + errno_t err = localtime_s(tm, &time); + if (err) { + *pDOS_date = 0; + *pDOS_time = 0; + return; + } +# else + struct tm *tm = localtime(&time); +# endif /* #ifdef _MSC_VER */ + + *pDOS_time = (mz_uint16) (((tm->tm_hour) << 11) + + ((tm->tm_min) << 5) + + ((tm->tm_sec) >> 1)); + *pDOS_date = (mz_uint16) (((tm->tm_year + 1900 - 1980) << 9) + + ((tm->tm_mon + 1) << 5) + tm->tm_mday); +} +# endif /* MINIZ_NO_ARCHIVE_WRITING_APIS */ + +# ifndef MINIZ_NO_STDIO +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS +static mz_bool mz_zip_get_file_modified_time(const char *pFilename, + MZ_TIME_T *pTime) { + struct MZ_FILE_STAT_STRUCT file_stat; + + /* On Linux with x86 glibc, this call will fail on large files (I + * think >= 0x80000000 bytes) unless you compiled with + * _LARGEFILE64_SOURCE. Argh. */ + if (MZ_FILE_STAT(pFilename, &file_stat) != 0) + return MZ_FALSE; + + *pTime = file_stat.st_mtime; + + return MZ_TRUE; +} +# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS*/ + +static mz_bool mz_zip_set_file_times(const char *pFilename, + MZ_TIME_T access_time, + MZ_TIME_T modified_time) { + struct utimbuf t; + + memset(&t, 0, sizeof(t)); + t.actime = access_time; + t.modtime = modified_time; + + return !utime(pFilename, &t); +} +# endif /* #ifndef MINIZ_NO_STDIO */ +# endif /* #ifndef MINIZ_NO_TIME */ + +static MZ_FORCEINLINE mz_bool mz_zip_set_error(mz_zip_archive *pZip, + mz_zip_error err_num) { + if (pZip) + pZip->m_last_error = err_num; + return MZ_FALSE; +} + +static mz_bool mz_zip_reader_init_internal(mz_zip_archive *pZip, + mz_uint flags) { + (void) flags; + if ((!pZip) || (pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!pZip->m_pAlloc) + pZip->m_pAlloc = miniz_def_alloc_func; + if (!pZip->m_pFree) + pZip->m_pFree = miniz_def_free_func; + if (!pZip->m_pRealloc) + pZip->m_pRealloc = miniz_def_realloc_func; + + pZip->m_archive_size = 0; + pZip->m_central_directory_file_ofs = 0; + pZip->m_total_files = 0; + pZip->m_last_error = MZ_ZIP_NO_ERROR; + + if (NULL == + (pZip->m_pState = (mz_zip_internal_state *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, + sizeof(mz_uint8)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_central_dir_offsets, sizeof(mz_uint32)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_sorted_central_dir_offsets, + sizeof(mz_uint32)); + pZip->m_pState->m_init_flags = flags; + pZip->m_pState->m_zip64 = MZ_FALSE; + pZip->m_pState->m_zip64_has_extended_info_fields = MZ_FALSE; + + pZip->m_zip_mode = MZ_ZIP_MODE_READING; + + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_reader_filename_less(const mz_zip_array *pCentral_dir_array, + const mz_zip_array *pCentral_dir_offsets, + mz_uint l_index, mz_uint r_index) { + const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, + mz_uint32, l_index)), + *pE; + const mz_uint8 *pR = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, r_index)); + mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS), + r_len = MZ_READ_LE16(pR + MZ_ZIP_CDH_FILENAME_LEN_OFS); + mz_uint8 l = 0, r = 0; + pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pR += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pE = pL + MZ_MIN(l_len, r_len); + while (pL < pE) { + if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) + break; + pL++; + pR++; + } + return (pL == pE) ? (l_len < r_len) : (l < r); +} + +# define MZ_SWAP_UINT32(a, b) \ + do { \ + mz_uint32 t = a; \ + a = b; \ + b = t; \ + } \ + MZ_MACRO_END + +/* Heap sort of lowercased filenames, used to help accelerate plain + * central directory searches by mz_zip_reader_locate_file(). (Could + * also use qsort(), but it could allocate memory.) */ +static void mz_zip_reader_sort_central_dir_offsets_by_filename( + mz_zip_archive *pZip) { + mz_zip_internal_state *pState = pZip->m_pState; + const mz_zip_array *pCentral_dir_offsets = + &pState->m_central_dir_offsets; + const mz_zip_array *pCentral_dir = &pState->m_central_dir; + mz_uint32 *pIndices; + mz_uint32 start, end; + const mz_uint32 size = pZip->m_total_files; + + if (size <= 1U) + return; + + pIndices = &MZ_ZIP_ARRAY_ELEMENT( + &pState->m_sorted_central_dir_offsets, mz_uint32, 0); + + start = (size - 2U) >> 1U; + for (;;) { + mz_uint64 child, root = start; + for (;;) { + if ((child = (root << 1U) + 1U) >= size) + break; + child += (((child + 1U) < size) && + (mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, + pIndices[child], pIndices[child + 1U]))); + if (!mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, pIndices[root], + pIndices[child])) + break; + MZ_SWAP_UINT32(pIndices[root], pIndices[child]); + root = child; + } + if (!start) + break; + start--; + } + + end = size - 1; + while (end > 0) { + mz_uint64 child, root = 0; + MZ_SWAP_UINT32(pIndices[end], pIndices[0]); + for (;;) { + if ((child = (root << 1U) + 1U) >= end) + break; + child += (((child + 1U) < end) && + mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, + pIndices[child], pIndices[child + 1U])); + if (!mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, pIndices[root], + pIndices[child])) + break; + MZ_SWAP_UINT32(pIndices[root], pIndices[child]); + root = child; + } + end--; + } +} + +static mz_bool mz_zip_reader_locate_header_sig(mz_zip_archive *pZip, + mz_uint32 record_sig, + mz_uint32 record_size, + mz_int64 *pOfs) { + mz_int64 cur_file_ofs; + mz_uint32 buf_u32[4096 / sizeof(mz_uint32)]; + mz_uint8 *pBuf = (mz_uint8 *) buf_u32; + + /* Basic sanity checks - reject files which are too small */ + if (pZip->m_archive_size < record_size) + return MZ_FALSE; + + /* Find the record by scanning the file from the end towards the + * beginning. */ + cur_file_ofs = MZ_MAX((mz_int64) pZip->m_archive_size - + (mz_int64) sizeof(buf_u32), + 0); + for (;;) { + int i, n = (int) MZ_MIN(sizeof(buf_u32), + pZip->m_archive_size - cur_file_ofs); + + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, n) != + (mz_uint) n) + return MZ_FALSE; + + for (i = n - 4; i >= 0; --i) { + mz_uint s = MZ_READ_LE32(pBuf + i); + if (s == record_sig) { + if ((pZip->m_archive_size - (cur_file_ofs + i)) >= + record_size) + break; + } + } + + if (i >= 0) { + cur_file_ofs += i; + break; + } + + /* Give up if we've searched the entire file, or we've gone back + * "too far" (~64kb) */ + if ((!cur_file_ofs) || + ((pZip->m_archive_size - cur_file_ofs) >= + ((mz_uint64) (MZ_UINT16_MAX) + record_size))) + return MZ_FALSE; + + cur_file_ofs = MZ_MAX(cur_file_ofs - (sizeof(buf_u32) - 3), 0); + } + + *pOfs = cur_file_ofs; + return MZ_TRUE; +} + +static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, + mz_uint flags) { + mz_uint cdir_size = 0, cdir_entries_on_this_disk = 0, + num_this_disk = 0, cdir_disk_index = 0; + mz_uint64 cdir_ofs = 0; + mz_int64 cur_file_ofs = 0; + const mz_uint8 *p; + + mz_uint32 buf_u32[4096 / sizeof(mz_uint32)]; + mz_uint8 *pBuf = (mz_uint8 *) buf_u32; + mz_bool sort_central_dir = + ((flags & MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0); + mz_uint32 zip64_end_of_central_dir_locator_u32 + [(MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + sizeof(mz_uint32) - + 1) / + sizeof(mz_uint32)]; + mz_uint8 *pZip64_locator = (mz_uint8 *) + zip64_end_of_central_dir_locator_u32; + + mz_uint32 zip64_end_of_central_dir_header_u32 + [(MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - + 1) / + sizeof(mz_uint32)]; + mz_uint8 *pZip64_end_of_central_dir = (mz_uint8 *) + zip64_end_of_central_dir_header_u32; + + mz_uint64 zip64_end_of_central_dir_ofs = 0; + + /* Basic sanity checks - reject files which are too small, and check + * the first 4 bytes of the file to make sure a local header is + * there. */ + if (pZip->m_archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (!mz_zip_reader_locate_header_sig( + pZip, MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE, &cur_file_ofs)) + return mz_zip_set_error(pZip, MZ_ZIP_FAILED_FINDING_CENTRAL_DIR); + + /* Read and verify the end of central directory record. */ + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_SIG_OFS) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (cur_file_ofs >= (MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) { + if (pZip->m_pRead(pZip->m_pIO_opaque, + cur_file_ofs - + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE, + pZip64_locator, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) == + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) { + if (MZ_READ_LE32(pZip64_locator + MZ_ZIP64_ECDL_SIG_OFS) == + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG) { + zip64_end_of_central_dir_ofs = MZ_READ_LE64( + pZip64_locator + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS); + if (zip64_end_of_central_dir_ofs > + (pZip->m_archive_size - + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (pZip->m_pRead(pZip->m_pIO_opaque, + zip64_end_of_central_dir_ofs, + pZip64_end_of_central_dir, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) == + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) { + if (MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_SIG_OFS) == + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG) { + pZip->m_pState->m_zip64 = MZ_TRUE; + } + } + } + } + } + + pZip->m_total_files = MZ_READ_LE16( + pBuf + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS); + cdir_entries_on_this_disk = MZ_READ_LE16( + pBuf + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS); + num_this_disk = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS); + cdir_disk_index = MZ_READ_LE16(pBuf + + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS); + cdir_size = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_SIZE_OFS); + cdir_ofs = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_OFS_OFS); + + if (pZip->m_pState->m_zip64) { + mz_uint32 zip64_total_num_of_disks = MZ_READ_LE32( + pZip64_locator + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS); + mz_uint64 zip64_cdir_total_entries = MZ_READ_LE64( + pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS); + mz_uint64 zip64_cdir_total_entries_on_this_disk = MZ_READ_LE64( + pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS); + mz_uint64 zip64_size_of_end_of_central_dir_record = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS); + mz_uint64 zip64_size_of_central_directory = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_SIZE_OFS); + + if (zip64_size_of_end_of_central_dir_record < + (MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - 12)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (zip64_total_num_of_disks != 1U) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + /* Check for miniz's practical limits */ + if (zip64_cdir_total_entries > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + pZip->m_total_files = (mz_uint32) zip64_cdir_total_entries; + + if (zip64_cdir_total_entries_on_this_disk > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + cdir_entries_on_this_disk = (mz_uint32) + zip64_cdir_total_entries_on_this_disk; + + /* Check for miniz's current practical limits (sorry, this should + * be enough for millions of files) */ + if (zip64_size_of_central_directory > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + cdir_size = (mz_uint32) zip64_size_of_central_directory; + + num_this_disk = MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS); + + cdir_disk_index = MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS); + + cdir_ofs = MZ_READ_LE64(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_CDIR_OFS_OFS); + } + + if (pZip->m_total_files != cdir_entries_on_this_disk) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (((num_this_disk | cdir_disk_index) != 0) && + ((num_this_disk != 1) || (cdir_disk_index != 1))) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (cdir_size < (mz_uint64) pZip->m_total_files * + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((cdir_ofs + (mz_uint64) cdir_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pZip->m_central_directory_file_ofs = cdir_ofs; + + if (pZip->m_total_files) { + mz_uint i, n; + /* Read the entire central directory into a heap block, and + * allocate another heap block to hold the unsorted central dir + * file record offsets, and possibly another to hold the sorted + * indices. */ + if ((!mz_zip_array_resize(pZip, &pZip->m_pState->m_central_dir, + cdir_size, MZ_FALSE)) || + (!mz_zip_array_resize(pZip, + &pZip->m_pState->m_central_dir_offsets, + pZip->m_total_files, MZ_FALSE))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (sort_central_dir) { + if (!mz_zip_array_resize( + pZip, &pZip->m_pState->m_sorted_central_dir_offsets, + pZip->m_total_files, MZ_FALSE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (pZip->m_pRead(pZip->m_pIO_opaque, cdir_ofs, + pZip->m_pState->m_central_dir.m_p, + cdir_size) != cdir_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + /* Now create an index into the central directory file records, do + * some basic sanity checking on each record */ + p = (const mz_uint8 *) pZip->m_pState->m_central_dir.m_p; + for (n = cdir_size, i = 0; i < pZip->m_total_files; ++i) { + mz_uint total_header_size, disk_index, bit_flags, filename_size, + ext_data_size; + mz_uint64 comp_size, decomp_size, local_header_ofs; + + if ((n < MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) || + (MZ_READ_LE32(p) != MZ_ZIP_CENTRAL_DIR_HEADER_SIG)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir_offsets, mz_uint32, + i) = (mz_uint32) (p - (const mz_uint8 *) pZip->m_pState + ->m_central_dir.m_p); + + if (sort_central_dir) + MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_sorted_central_dir_offsets, mz_uint32, + i) = i; + + comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS); + decomp_size = MZ_READ_LE32(p + + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS); + local_header_ofs = MZ_READ_LE32(p + + MZ_ZIP_CDH_LOCAL_HEADER_OFS); + filename_size = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + ext_data_size = MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS); + + if ((!pZip->m_pState->m_zip64_has_extended_info_fields) && + (ext_data_size) && + (MZ_MAX(MZ_MAX(comp_size, decomp_size), local_header_ofs) == + MZ_UINT32_MAX)) { + /* Attempt to find zip64 extended information field in the + * entry's extra data */ + mz_uint32 extra_size_remaining = ext_data_size; + + if (extra_size_remaining) { + const mz_uint8 *pExtra_data; + void *buf = NULL; + + if (MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + + ext_data_size > + n) { + buf = MZ_MALLOC(ext_data_size); + if (buf == NULL) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (pZip->m_pRead(pZip->m_pIO_opaque, + cdir_ofs + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + filename_size, + buf, ext_data_size) != ext_data_size) { + MZ_FREE(buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + pExtra_data = (mz_uint8 *) buf; + } else { + pExtra_data = p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + filename_size; + } + + do { + mz_uint32 field_id; + mz_uint32 field_data_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + MZ_FREE(buf); + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + + sizeof(mz_uint16)); + + if ((field_data_size + sizeof(mz_uint16) * 2) > + extra_size_remaining) { + MZ_FREE(buf); + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + if (field_id == + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + /* Ok, the archive didn't have any zip64 headers but it + * uses a zip64 extended information field so mark it as + * zip64 anyway (this can occur with infozip's zip util + * when it reads compresses files from stdin). */ + pZip->m_pState->m_zip64 = MZ_TRUE; + pZip->m_pState->m_zip64_has_extended_info_fields = + MZ_TRUE; + break; + } + + pExtra_data += sizeof(mz_uint16) * 2 + field_data_size; + extra_size_remaining = extra_size_remaining - + sizeof(mz_uint16) * 2 - + field_data_size; + } while (extra_size_remaining); + + MZ_FREE(buf); + } + } + + /* I've seen archives that aren't marked as zip64 that uses + * zip64 ext data, argh */ + if ((comp_size != MZ_UINT32_MAX) && + (decomp_size != MZ_UINT32_MAX)) { + if (((!MZ_READ_LE32(p + MZ_ZIP_CDH_METHOD_OFS)) && + (decomp_size != comp_size)) || + (decomp_size && !comp_size)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + disk_index = MZ_READ_LE16(p + MZ_ZIP_CDH_DISK_START_OFS); + if ((disk_index == MZ_UINT16_MAX) || + ((disk_index != num_this_disk) && (disk_index != 1))) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (comp_size != MZ_UINT32_MAX) { + if (((mz_uint64) MZ_READ_LE32(p + + MZ_ZIP_CDH_LOCAL_HEADER_OFS) + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + comp_size) > + pZip->m_archive_size) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + bit_flags = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + if (bit_flags & + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + if ((total_header_size = + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS)) > n) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + n -= total_header_size; + p += total_header_size; + } + } + + if (sort_central_dir) + mz_zip_reader_sort_central_dir_offsets_by_filename(pZip); + + return MZ_TRUE; +} + +void mz_zip_zero_struct(mz_zip_archive *pZip) { + if (pZip) + MZ_CLEAR_PTR(pZip); +} + +static mz_bool mz_zip_reader_end_internal(mz_zip_archive *pZip, + mz_bool set_last_error) { + mz_bool status = MZ_TRUE; + + if (!pZip) + return MZ_FALSE; + + if ((!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || + (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) { + if (set_last_error) + pZip->m_last_error = MZ_ZIP_INVALID_PARAMETER; + + return MZ_FALSE; + } + + if (pZip->m_pState) { + mz_zip_internal_state *pState = pZip->m_pState; + pZip->m_pState = NULL; + + mz_zip_array_clear(pZip, &pState->m_central_dir); + mz_zip_array_clear(pZip, &pState->m_central_dir_offsets); + mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets); + +# ifndef MINIZ_NO_STDIO + if (pState->m_pFile) { + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (MZ_FCLOSE(pState->m_pFile) == EOF) { + if (set_last_error) + pZip->m_last_error = MZ_ZIP_FILE_CLOSE_FAILED; + status = MZ_FALSE; + } + } + pState->m_pFile = NULL; + } +# endif /* #ifndef MINIZ_NO_STDIO */ + + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + } + pZip->m_zip_mode = MZ_ZIP_MODE_INVALID; + + return status; +} + +mz_bool mz_zip_reader_end(mz_zip_archive *pZip) { + return mz_zip_reader_end_internal(pZip, MZ_TRUE); +} +mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, + mz_uint flags) { + if ((!pZip) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_USER; + pZip->m_archive_size = size; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +static size_t mz_zip_mem_read_func(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + size_t s = (file_ofs >= pZip->m_archive_size) + ? 0 + : (size_t) MZ_MIN(pZip->m_archive_size - file_ofs, + n); + memcpy(pBuf, (const mz_uint8 *) pZip->m_pState->m_pMem + file_ofs, + s); + return s; +} + +mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, + size_t size, mz_uint flags) { + if (!pMem) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_MEMORY; + pZip->m_archive_size = size; + pZip->m_pRead = mz_zip_mem_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pNeeds_keepalive = NULL; + +# ifdef __cplusplus + pZip->m_pState->m_pMem = const_cast<void *>(pMem); +# else + pZip->m_pState->m_pMem = (void *) pMem; +# endif + + pZip->m_pState->m_mem_size = size; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +# ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_read_func(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile); + + file_ofs += pZip->m_pState->m_file_archive_start_ofs; + + if (((mz_int64) file_ofs < 0) || + (((cur_ofs != (mz_int64) file_ofs)) && + (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64) file_ofs, + SEEK_SET)))) + return 0; + + return MZ_FREAD(pBuf, 1, n, pZip->m_pState->m_pFile); +} + +mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 flags) { + return mz_zip_reader_init_file_v2(pZip, pFilename, flags, 0, 0); +} + +mz_bool mz_zip_reader_init_file_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags, + mz_uint64 file_start_ofs, + mz_uint64 archive_size) { + mz_uint64 file_size; + MZ_FILE *pFile; + + if ((!pZip) || (!pFilename) || + ((archive_size) && + (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pFile = MZ_FOPEN(pFilename, "rb"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + file_size = archive_size; + if (!file_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + } + + file_size = MZ_FTELL64(pFile); + } + + /* TODO: Better sanity check archive_size and the # of actual + * remaining bytes */ + + if (file_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) { + MZ_FCLOSE(pFile); + return MZ_FALSE; + } + + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + pZip->m_pRead = mz_zip_file_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = file_size; + pZip->m_pState->m_file_archive_start_ofs = file_start_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint64 archive_size, + mz_uint flags) { + mz_uint64 cur_file_ofs; + + if ((!pZip) || (!pFile)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + cur_file_ofs = MZ_FTELL64(pFile); + + if (!archive_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + + archive_size = MZ_FTELL64(pFile) - cur_file_ofs; + + if (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_CFILE; + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = archive_size; + pZip->m_pState->m_file_archive_start_ofs = cur_file_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +# endif /* #ifndef MINIZ_NO_STDIO */ + +static MZ_FORCEINLINE const mz_uint8 *mz_zip_get_cdh( + mz_zip_archive *pZip, mz_uint file_index) { + if ((!pZip) || (!pZip->m_pState) || + (file_index >= pZip->m_total_files)) + return NULL; + return &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, + mz_uint32, file_index)); +} + +mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint m_bit_flag; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + return (m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) != + 0; +} + +mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint bit_flag; + mz_uint method; + + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS); + bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + + if ((method != 0) && (method != MZ_DEFLATED)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + return MZ_FALSE; + } + + if (bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + return MZ_FALSE; + } + + if (bit_flag & + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint filename_len, attribute_mapping_id, external_attr; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + filename_len = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + if (filename_len) { + if (*(p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_len - 1) == + '/') + return MZ_TRUE; + } + + /* Bugfix: This code was also checking if the internal attribute was + * non-zero, which wasn't correct. */ + /* Most/all zip writers (hopefully) set DOS file/directory + * attributes in the low 16-bits, so check for the DOS directory + * flag and ignore the source OS ID in the created by field. */ + /* FIXME: Remove this check? Is it necessary - we already check the + * filename. */ + attribute_mapping_id = MZ_READ_LE16( + p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS) >> + 8; + (void) attribute_mapping_id; + + external_attr = MZ_READ_LE32(p + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS); + if ((external_attr & MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG) != 0) { + return MZ_TRUE; + } + + return MZ_FALSE; +} + +static mz_bool mz_zip_file_stat_internal( + mz_zip_archive *pZip, mz_uint file_index, + const mz_uint8 *pCentral_dir_header, + mz_zip_archive_file_stat *pStat, + mz_bool *pFound_zip64_extra_data) { + mz_uint n; + const mz_uint8 *p = pCentral_dir_header; + + if (pFound_zip64_extra_data) + *pFound_zip64_extra_data = MZ_FALSE; + + if ((!p) || (!pStat)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Extract fields from the central directory record. */ + pStat->m_file_index = file_index; + pStat->m_central_dir_ofs = MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir_offsets, mz_uint32, file_index); + pStat->m_version_made_by = MZ_READ_LE16( + p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS); + pStat->m_version_needed = MZ_READ_LE16( + p + MZ_ZIP_CDH_VERSION_NEEDED_OFS); + pStat->m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + pStat->m_method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS); +# ifndef MINIZ_NO_TIME + pStat->m_time = mz_zip_dos_to_time_t( + MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_TIME_OFS), + MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_DATE_OFS)); +# endif + pStat->m_crc32 = MZ_READ_LE32(p + MZ_ZIP_CDH_CRC32_OFS); + pStat->m_comp_size = MZ_READ_LE32(p + + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS); + pStat->m_uncomp_size = MZ_READ_LE32( + p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS); + pStat->m_internal_attr = MZ_READ_LE16(p + + MZ_ZIP_CDH_INTERNAL_ATTR_OFS); + pStat->m_external_attr = MZ_READ_LE32(p + + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS); + pStat->m_local_header_ofs = MZ_READ_LE32( + p + MZ_ZIP_CDH_LOCAL_HEADER_OFS); + + /* Copy as much of the filename and comment as possible. */ + n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE - 1); + memcpy(pStat->m_filename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n); + pStat->m_filename[n] = '\0'; + + n = MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS); + n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE - 1); + pStat->m_comment_size = n; + memcpy(pStat->m_comment, + p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS), + n); + pStat->m_comment[n] = '\0'; + + /* Set some flags for convienance */ + pStat->m_is_directory = mz_zip_reader_is_file_a_directory( + pZip, file_index); + pStat->m_is_encrypted = mz_zip_reader_is_file_encrypted(pZip, + file_index); + pStat->m_is_supported = mz_zip_reader_is_file_supported(pZip, + file_index); + + /* See if we need to read any zip64 extended information fields. */ + /* Confusingly, these zip64 fields can be present even on non-zip64 + * archives (Debian zip on a huge files from stdin piped to stdout + * creates them). */ + if (MZ_MAX(MZ_MAX(pStat->m_comp_size, pStat->m_uncomp_size), + pStat->m_local_header_ofs) == MZ_UINT32_MAX) { + /* Attempt to find zip64 extended information field in the entry's + * extra data */ + mz_uint32 extra_size_remaining = MZ_READ_LE16( + p + MZ_ZIP_CDH_EXTRA_LEN_OFS); + + if (extra_size_remaining) { + const mz_uint8 *pExtra_data = + p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + + do { + mz_uint32 field_id; + mz_uint32 field_data_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + + sizeof(mz_uint16)); + + if ((field_data_size + sizeof(mz_uint16) * 2) > + extra_size_remaining) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (field_id == + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pField_data = pExtra_data + + sizeof(mz_uint16) * 2; + mz_uint32 field_data_remaining = field_data_size; + + if (pFound_zip64_extra_data) + *pFound_zip64_extra_data = MZ_TRUE; + + if (pStat->m_uncomp_size == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_uncomp_size = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + if (pStat->m_comp_size == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_comp_size = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + if (pStat->m_local_header_ofs == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_local_header_ofs = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + break; + } + + pExtra_data += sizeof(mz_uint16) * 2 + field_data_size; + extra_size_remaining = extra_size_remaining - + sizeof(mz_uint16) * 2 - + field_data_size; + } while (extra_size_remaining); + } + } + + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_string_equal(const char *pA, + const char *pB, + mz_uint len, + mz_uint flags) { + mz_uint i; + if (flags & MZ_ZIP_FLAG_CASE_SENSITIVE) + return 0 == memcmp(pA, pB, len); + for (i = 0; i < len; ++i) + if (MZ_TOLOWER(pA[i]) != MZ_TOLOWER(pB[i])) + return MZ_FALSE; + return MZ_TRUE; +} + +static MZ_FORCEINLINE int mz_zip_filename_compare( + const mz_zip_array *pCentral_dir_array, + const mz_zip_array *pCentral_dir_offsets, mz_uint l_index, + const char *pR, mz_uint r_len) { + const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, + mz_uint32, l_index)), + *pE; + mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS); + mz_uint8 l = 0, r = 0; + pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pE = pL + MZ_MIN(l_len, r_len); + while (pL < pE) { + if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) + break; + pL++; + pR++; + } + return (pL == pE) ? (int) (l_len - r_len) : (l - r); +} + +static mz_bool mz_zip_locate_file_binary_search(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 *pIndex) { + mz_zip_internal_state *pState = pZip->m_pState; + const mz_zip_array *pCentral_dir_offsets = + &pState->m_central_dir_offsets; + const mz_zip_array *pCentral_dir = &pState->m_central_dir; + mz_uint32 *pIndices = &MZ_ZIP_ARRAY_ELEMENT( + &pState->m_sorted_central_dir_offsets, mz_uint32, 0); + const mz_uint32 size = pZip->m_total_files; + const mz_uint filename_len = (mz_uint) strlen(pFilename); + + if (pIndex) + *pIndex = 0; + + if (size) { + /* yes I could use uint32_t's, but then we would have to add some + * special case checks in the loop, argh, and */ + /* honestly the major expense here on 32-bit CPU's will still be + * the filename compare */ + mz_int64 l = 0, h = (mz_int64) size - 1; + + while (l <= h) { + mz_int64 m = l + ((h - l) >> 1); + mz_uint32 file_index = pIndices[(mz_uint32) m]; + + int comp = mz_zip_filename_compare( + pCentral_dir, pCentral_dir_offsets, file_index, pFilename, + filename_len); + if (!comp) { + if (pIndex) + *pIndex = file_index; + return MZ_TRUE; + } else if (comp < 0) + l = m + 1; + else + h = m - 1; + } + } + + return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND); +} + +int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, + const char *pComment, mz_uint flags) { + mz_uint32 index; + if (!mz_zip_reader_locate_file_v2(pZip, pName, pComment, flags, + &index)) + return -1; + else + return (int) index; +} + +mz_bool mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, + const char *pName, + const char *pComment, + mz_uint flags, + mz_uint32 *pIndex) { + mz_uint file_index; + size_t name_len, comment_len; + + if (pIndex) + *pIndex = 0; + + if ((!pZip) || (!pZip->m_pState) || (!pName)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* See if we can use a binary search */ + if (((pZip->m_pState->m_init_flags & + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0) && + (pZip->m_zip_mode == MZ_ZIP_MODE_READING) && + ((flags & (MZ_ZIP_FLAG_IGNORE_PATH | + MZ_ZIP_FLAG_CASE_SENSITIVE)) == 0) && + (!pComment) && + (pZip->m_pState->m_sorted_central_dir_offsets.m_size)) { + return mz_zip_locate_file_binary_search(pZip, pName, pIndex); + } + + /* Locate the entry by scanning the entire central directory */ + name_len = strlen(pName); + if (name_len > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + comment_len = pComment ? strlen(pComment) : 0; + if (comment_len > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + for (file_index = 0; file_index < pZip->m_total_files; + file_index++) { + const mz_uint8 *pHeader = &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, + mz_uint32, file_index)); + mz_uint filename_len = MZ_READ_LE16(pHeader + + MZ_ZIP_CDH_FILENAME_LEN_OFS); + const char *pFilename = (const char *) pHeader + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + if (filename_len < name_len) + continue; + if (comment_len) { + mz_uint file_extra_len = MZ_READ_LE16(pHeader + + MZ_ZIP_CDH_EXTRA_LEN_OFS), + file_comment_len = MZ_READ_LE16( + pHeader + MZ_ZIP_CDH_COMMENT_LEN_OFS); + const char *pFile_comment = pFilename + filename_len + + file_extra_len; + if ((file_comment_len != comment_len) || + (!mz_zip_string_equal(pComment, pFile_comment, + file_comment_len, flags))) + continue; + } + if ((flags & MZ_ZIP_FLAG_IGNORE_PATH) && (filename_len)) { + int ofs = filename_len - 1; + do { + if ((pFilename[ofs] == '/') || (pFilename[ofs] == '\\') || + (pFilename[ofs] == ':')) + break; + } while (--ofs >= 0); + ofs++; + pFilename += ofs; + filename_len -= ofs; + } + if ((filename_len == name_len) && + (mz_zip_string_equal(pName, pFilename, filename_len, + flags))) { + if (pIndex) + *pIndex = file_index; + return MZ_TRUE; + } + } + + return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND); +} + +static mz_bool mz_zip_reader_extract_to_mem_no_alloc1( + mz_zip_archive *pZip, mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size, const mz_zip_archive_file_stat *st) { + int status = TINFL_STATUS_DONE; + mz_uint64 needed_size, cur_file_ofs, comp_remaining, + out_buf_ofs = 0, read_buf_size, read_buf_ofs = 0, + read_buf_avail; + mz_zip_archive_file_stat file_stat; + void *pRead_buf; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + tinfl_decompressor inflator; + + if ((!pZip) || (!pZip->m_pState) || ((buf_size) && (!pBuf)) || + ((user_read_buf_size) && (!pUser_read_buf)) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (st) { + file_stat = *st; + } else if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + /* Ensure supplied output buffer is large enough. */ + needed_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + ? file_stat.m_comp_size + : file_stat.m_uncomp_size; + if (buf_size < needed_size) + return mz_zip_set_error(pZip, MZ_ZIP_BUF_TOO_SMALL); + + /* Read and parse the local directory entry. */ + cur_file_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_file_ofs += + (mz_uint64) (MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed + * data. */ + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, + (size_t) needed_size) != needed_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) == 0) { + if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *) pBuf, + (size_t) file_stat.m_uncomp_size) != + file_stat.m_crc32) + return mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED); + } +# endif + + return MZ_TRUE; + } + + /* Decompress the file either directly from memory or from a file + * input buffer. */ + tinfl_init(&inflator); + + if (pZip->m_pState->m_pMem) { + /* Read directly from the archive in memory. */ + pRead_buf = (mz_uint8 *) pZip->m_pState->m_pMem + cur_file_ofs; + read_buf_size = read_buf_avail = file_stat.m_comp_size; + comp_remaining = 0; + } else if (pUser_read_buf) { + /* Use a user provided read buffer. */ + if (!user_read_buf_size) + return MZ_FALSE; + pRead_buf = (mz_uint8 *) pUser_read_buf; + read_buf_size = user_read_buf_size; + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } else { + /* Temporarily allocate a read buffer. */ + read_buf_size = MZ_MIN(file_stat.m_comp_size, + (mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE); + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (read_buf_size > 0x7FFFFFFF)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t) read_buf_size))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } + + do { + /* The size_t cast here should be OK because we've verified that + * the output buffer is >= file_stat.m_uncomp_size above */ + size_t in_buf_size, + out_buf_size = (size_t) (file_stat.m_uncomp_size - + out_buf_ofs); + if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t) read_buf_avail) != read_buf_avail) { + status = TINFL_STATUS_FAILED; + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + break; + } + cur_file_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + read_buf_ofs = 0; + } + in_buf_size = (size_t) read_buf_avail; + status = tinfl_decompress( + &inflator, (mz_uint8 *) pRead_buf + read_buf_ofs, + &in_buf_size, (mz_uint8 *) pBuf, + (mz_uint8 *) pBuf + out_buf_ofs, &out_buf_size, + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF | + (comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0)); + read_buf_avail -= in_buf_size; + read_buf_ofs += in_buf_size; + out_buf_ofs += out_buf_size; + } while (status == TINFL_STATUS_NEEDS_MORE_INPUT); + + if (status == TINFL_STATUS_DONE) { + /* Make sure the entire file was decompressed, and check its CRC. + */ + if (out_buf_ofs != file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + status = TINFL_STATUS_FAILED; + } +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *) pBuf, + (size_t) file_stat.m_uncomp_size) != + file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED); + status = TINFL_STATUS_FAILED; + } +# endif + } + + if ((!pZip->m_pState->m_pMem) && (!pUser_read_buf)) + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + + return status == TINFL_STATUS_DONE; +} + +mz_bool mz_zip_reader_extract_to_mem_no_alloc( + mz_zip_archive *pZip, mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size) { + return mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, buf_size, flags, pUser_read_buf, + user_read_buf_size, NULL); +} + +mz_bool mz_zip_reader_extract_file_to_mem_no_alloc( + mz_zip_archive *pZip, const char *pFilename, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) + return MZ_FALSE; + return mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, buf_size, flags, pUser_read_buf, + user_read_buf_size, NULL); +} + +mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive *pZip, + mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags) { + return mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, buf_size, flags, NULL, 0, NULL); +} + +mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, + const char *pFilename, + void *pBuf, size_t buf_size, + mz_uint flags) { + return mz_zip_reader_extract_file_to_mem_no_alloc( + pZip, pFilename, pBuf, buf_size, flags, NULL, 0); +} + +void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, + mz_uint file_index, size_t *pSize, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + mz_uint64 alloc_size; + void *pBuf; + + if (pSize) + *pSize = 0; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return NULL; + + alloc_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + ? file_stat.m_comp_size + : file_stat.m_uncomp_size; + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (alloc_size > 0x7FFFFFFF)) { + mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + return NULL; + } + + if (NULL == (pBuf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t) alloc_size))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return NULL; + } + + if (!mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, (size_t) alloc_size, flags, NULL, 0, + &file_stat)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return NULL; + } + + if (pSize) + *pSize = (size_t) alloc_size; + return pBuf; +} + +void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, + const char *pFilename, + size_t *pSize, + mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) { + if (pSize) + *pSize = 0; + return MZ_FALSE; + } + return mz_zip_reader_extract_to_heap(pZip, file_index, pSize, + flags); +} + +mz_bool mz_zip_reader_extract_to_callback( + mz_zip_archive *pZip, mz_uint file_index, + mz_file_write_func pCallback, void *pOpaque, mz_uint flags) { + int status = TINFL_STATUS_DONE; +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + mz_uint file_crc32 = MZ_CRC32_INIT; +# endif + mz_uint64 read_buf_size, read_buf_ofs = 0, read_buf_avail, + comp_remaining, out_buf_ofs = 0, + cur_file_ofs; + mz_zip_archive_file_stat file_stat; + void *pRead_buf = NULL; + void *pWrite_buf = NULL; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + + if ((!pZip) || (!pZip->m_pState) || (!pCallback) || + (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + /* Read and do some minimal validation of the local directory entry + * (this doesn't crack the zip64 stuff, which we already have from + * the central dir) */ + cur_file_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_file_ofs += + (mz_uint64) (MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + /* Decompress the file either directly from memory or from a file + * input buffer. */ + if (pZip->m_pState->m_pMem) { + pRead_buf = (mz_uint8 *) pZip->m_pState->m_pMem + cur_file_ofs; + read_buf_size = read_buf_avail = file_stat.m_comp_size; + comp_remaining = 0; + } else { + read_buf_size = MZ_MIN(file_stat.m_comp_size, + (mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE); + if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t) read_buf_size))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } + + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed + * data. */ + if (pZip->m_pState->m_pMem) { + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (file_stat.m_comp_size > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pCallback(pOpaque, out_buf_ofs, pRead_buf, + (size_t) file_stat.m_comp_size) != + file_stat.m_comp_size) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + } else if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + file_crc32 = (mz_uint32) mz_crc32( + file_crc32, (const mz_uint8 *) pRead_buf, + (size_t) file_stat.m_comp_size); +# endif + } + + cur_file_ofs += file_stat.m_comp_size; + out_buf_ofs += file_stat.m_comp_size; + comp_remaining = 0; + } else { + while (comp_remaining) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t) read_buf_avail) != + read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + file_crc32 = (mz_uint32) mz_crc32( + file_crc32, (const mz_uint8 *) pRead_buf, + (size_t) read_buf_avail); + } +# endif + + if (pCallback(pOpaque, out_buf_ofs, pRead_buf, + (size_t) read_buf_avail) != read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + + cur_file_ofs += read_buf_avail; + out_buf_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + } + } + } else { + tinfl_decompressor inflator; + tinfl_init(&inflator); + + if (NULL == (pWrite_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + TINFL_LZ_DICT_SIZE))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + status = TINFL_STATUS_FAILED; + } else { + do { + mz_uint8 *pWrite_buf_cur = (mz_uint8 *) pWrite_buf + + (out_buf_ofs & + (TINFL_LZ_DICT_SIZE - 1)); + size_t in_buf_size, + out_buf_size = TINFL_LZ_DICT_SIZE - + (out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1)); + if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, + pRead_buf, (size_t) read_buf_avail) != + read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + cur_file_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + read_buf_ofs = 0; + } + + in_buf_size = (size_t) read_buf_avail; + status = tinfl_decompress( + &inflator, (const mz_uint8 *) pRead_buf + read_buf_ofs, + &in_buf_size, (mz_uint8 *) pWrite_buf, pWrite_buf_cur, + &out_buf_size, + comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0); + read_buf_avail -= in_buf_size; + read_buf_ofs += in_buf_size; + + if (out_buf_size) { + if (pCallback(pOpaque, out_buf_ofs, pWrite_buf_cur, + out_buf_size) != out_buf_size) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + file_crc32 = (mz_uint32) mz_crc32( + file_crc32, pWrite_buf_cur, out_buf_size); +# endif + if ((out_buf_ofs += out_buf_size) > + file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + } + } while ((status == TINFL_STATUS_NEEDS_MORE_INPUT) || + (status == TINFL_STATUS_HAS_MORE_OUTPUT)); + } + } + + if ((status == TINFL_STATUS_DONE) && + (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) { + /* Make sure the entire file was decompressed, and check its CRC. + */ + if (out_buf_ofs != file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + status = TINFL_STATUS_FAILED; + } +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (file_crc32 != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + status = TINFL_STATUS_FAILED; + } +# endif + } + + if (!pZip->m_pState->m_pMem) + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + + if (pWrite_buf) + pZip->m_pFree(pZip->m_pAlloc_opaque, pWrite_buf); + + return status == TINFL_STATUS_DONE; +} + +mz_bool mz_zip_reader_extract_file_to_callback( + mz_zip_archive *pZip, const char *pFilename, + mz_file_write_func pCallback, void *pOpaque, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_callback(pZip, file_index, + pCallback, pOpaque, flags); +} + +mz_zip_reader_extract_iter_state *mz_zip_reader_extract_iter_new( + mz_zip_archive *pZip, mz_uint file_index, mz_uint flags) { + mz_zip_reader_extract_iter_state *pState; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + + /* Argument sanity check */ + if ((!pZip) || (!pZip->m_pState)) + return NULL; + + /* Allocate an iterator status structure */ + pState = (mz_zip_reader_extract_iter_state *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + sizeof(mz_zip_reader_extract_iter_state)); + if (!pState) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return NULL; + } + + /* Fetch file details */ + if (!mz_zip_reader_file_stat(pZip, file_index, + &pState->file_stat)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Encryption and patch files are not supported. */ + if (pState->file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (pState->file_stat.m_method != 0) && + (pState->file_stat.m_method != MZ_DEFLATED)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Init state - save args */ + pState->pZip = pZip; + pState->flags = flags; + + /* Init state - reset variables to defaults */ + pState->status = TINFL_STATUS_DONE; +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + pState->file_crc32 = MZ_CRC32_INIT; +# endif + pState->read_buf_ofs = 0; + pState->out_buf_ofs = 0; + pState->pRead_buf = NULL; + pState->pWrite_buf = NULL; + pState->out_blk_remain = 0; + + /* Read and parse the local directory entry. */ + pState->cur_file_ofs = pState->file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, pState->cur_file_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + pState->cur_file_ofs += + (mz_uint64) (MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((pState->cur_file_ofs + pState->file_stat.m_comp_size) > + pZip->m_archive_size) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Decompress the file either directly from memory or from a file + * input buffer. */ + if (pZip->m_pState->m_pMem) { + pState->pRead_buf = (mz_uint8 *) pZip->m_pState->m_pMem + + pState->cur_file_ofs; + pState->read_buf_size = pState->read_buf_avail = + pState->file_stat.m_comp_size; + pState->comp_remaining = pState->file_stat.m_comp_size; + } else { + if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method))) { + /* Decompression required, therefore intermediate read buffer + * required */ + pState->read_buf_size = MZ_MIN( + pState->file_stat.m_comp_size, + (mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE); + if (NULL == (pState->pRead_buf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + (size_t) pState->read_buf_size))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + } else { + /* Decompression not required - we will be reading directly into + * user buffer, no temp buf required */ + pState->read_buf_size = 0; + } + pState->read_buf_avail = 0; + pState->comp_remaining = pState->file_stat.m_comp_size; + } + + if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method))) { + /* Decompression required, init decompressor */ + tinfl_init(&pState->inflator); + + /* Allocate write buffer */ + if (NULL == (pState->pWrite_buf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, TINFL_LZ_DICT_SIZE))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + if (pState->pRead_buf) + pZip->m_pFree(pZip->m_pAlloc_opaque, pState->pRead_buf); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + } + + return pState; +} + +mz_zip_reader_extract_iter_state *mz_zip_reader_extract_file_iter_new( + mz_zip_archive *pZip, const char *pFilename, mz_uint flags) { + mz_uint32 file_index; + + /* Locate file index by name */ + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) + return NULL; + + /* Construct iterator */ + return mz_zip_reader_extract_iter_new(pZip, file_index, flags); +} + +size_t mz_zip_reader_extract_iter_read( + mz_zip_reader_extract_iter_state *pState, void *pvBuf, + size_t buf_size) { + size_t copied_to_caller = 0; + + /* Argument sanity check */ + if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState) || + (!pvBuf)) + return 0; + + if ((pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed + * data, calc amount to return. */ + copied_to_caller = (size_t) MZ_MIN(buf_size, + pState->comp_remaining); + + /* Zip is in memory....or requires reading from a file? */ + if (pState->pZip->m_pState->m_pMem) { + /* Copy data to caller's buffer */ + memcpy(pvBuf, pState->pRead_buf, copied_to_caller); + pState->pRead_buf = ((mz_uint8 *) pState->pRead_buf) + + copied_to_caller; + } else { + /* Read directly into caller's buffer */ + if (pState->pZip->m_pRead( + pState->pZip->m_pIO_opaque, pState->cur_file_ofs, pvBuf, + copied_to_caller) != copied_to_caller) { + /* Failed to read all that was asked for, flag failure and + * alert user */ + mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED); + pState->status = TINFL_STATUS_FAILED; + copied_to_caller = 0; + } + } + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + /* Compute CRC if not returning compressed data only */ + if (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) + pState->file_crc32 = (mz_uint32) mz_crc32( + pState->file_crc32, (const mz_uint8 *) pvBuf, + copied_to_caller); +# endif + + /* Advance offsets, dec counters */ + pState->cur_file_ofs += copied_to_caller; + pState->out_buf_ofs += copied_to_caller; + pState->comp_remaining -= copied_to_caller; + } else { + do { + /* Calc ptr to write buffer - given current output pos and block + * size */ + mz_uint8 *pWrite_buf_cur = (mz_uint8 *) pState->pWrite_buf + + (pState->out_buf_ofs & + (TINFL_LZ_DICT_SIZE - 1)); + + /* Calc max output size - given current output pos and block + * size */ + size_t in_buf_size, out_buf_size = TINFL_LZ_DICT_SIZE - + (pState->out_buf_ofs & + (TINFL_LZ_DICT_SIZE - 1)); + + if (!pState->out_blk_remain) { + /* Read more data from file if none available (and reading + * from file) */ + if ((!pState->read_buf_avail) && + (!pState->pZip->m_pState->m_pMem)) { + /* Calc read size */ + pState->read_buf_avail = MZ_MIN(pState->read_buf_size, + pState->comp_remaining); + if (pState->pZip->m_pRead( + pState->pZip->m_pIO_opaque, pState->cur_file_ofs, + pState->pRead_buf, + (size_t) pState->read_buf_avail) != + pState->read_buf_avail) { + mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED); + pState->status = TINFL_STATUS_FAILED; + break; + } + + /* Advance offsets, dec counters */ + pState->cur_file_ofs += pState->read_buf_avail; + pState->comp_remaining -= pState->read_buf_avail; + pState->read_buf_ofs = 0; + } + + /* Perform decompression */ + in_buf_size = (size_t) pState->read_buf_avail; + pState->status = tinfl_decompress( + &pState->inflator, + (const mz_uint8 *) pState->pRead_buf + + pState->read_buf_ofs, + &in_buf_size, (mz_uint8 *) pState->pWrite_buf, + pWrite_buf_cur, &out_buf_size, + pState->comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0); + pState->read_buf_avail -= in_buf_size; + pState->read_buf_ofs += in_buf_size; + + /* Update current output block size remaining */ + pState->out_blk_remain = out_buf_size; + } + + if (pState->out_blk_remain) { + /* Calc amount to return. */ + size_t to_copy = MZ_MIN((buf_size - copied_to_caller), + pState->out_blk_remain); + + /* Copy data to caller's buffer */ + memcpy((mz_uint8 *) pvBuf + copied_to_caller, pWrite_buf_cur, + to_copy); + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + /* Perform CRC */ + pState->file_crc32 = (mz_uint32) mz_crc32( + pState->file_crc32, pWrite_buf_cur, to_copy); +# endif + + /* Decrement data consumed from block */ + pState->out_blk_remain -= to_copy; + + /* Inc output offset, while performing sanity check */ + if ((pState->out_buf_ofs += to_copy) > + pState->file_stat.m_uncomp_size) { + mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED); + pState->status = TINFL_STATUS_FAILED; + break; + } + + /* Increment counter of data copied to caller */ + copied_to_caller += to_copy; + } + } while ((copied_to_caller < buf_size) && + ((pState->status == TINFL_STATUS_NEEDS_MORE_INPUT) || + (pState->status == TINFL_STATUS_HAS_MORE_OUTPUT))); + } + + /* Return how many bytes were copied into user buffer */ + return copied_to_caller; +} + +mz_bool mz_zip_reader_extract_iter_free( + mz_zip_reader_extract_iter_state *pState) { + int status; + + /* Argument sanity check */ + if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState)) + return MZ_FALSE; + + /* Was decompression completed and requested? */ + if ((pState->status == TINFL_STATUS_DONE) && + (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) { + /* Make sure the entire file was decompressed, and check its CRC. + */ + if (pState->out_buf_ofs != pState->file_stat.m_uncomp_size) { + mz_zip_set_error(pState->pZip, + MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + pState->status = TINFL_STATUS_FAILED; + } +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (pState->file_crc32 != pState->file_stat.m_crc32) { + mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED); + pState->status = TINFL_STATUS_FAILED; + } +# endif + } + + /* Free buffers */ + if (!pState->pZip->m_pState->m_pMem) + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, + pState->pRead_buf); + if (pState->pWrite_buf) + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, + pState->pWrite_buf); + + /* Save status */ + status = pState->status; + + /* Free context */ + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState); + + return status == TINFL_STATUS_DONE; +} + +# ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_write_callback(void *pOpaque, mz_uint64 ofs, + const void *pBuf, size_t n) { + (void) ofs; + + return MZ_FWRITE(pBuf, 1, n, (MZ_FILE *) pOpaque); +} + +mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, + mz_uint file_index, + const char *pDst_filename, + mz_uint flags) { + mz_bool status; + mz_zip_archive_file_stat file_stat; + MZ_FILE *pFile; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + if ((file_stat.m_is_directory) || (!file_stat.m_is_supported)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + pFile = MZ_FOPEN(pDst_filename, "wb"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + status = mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_file_write_callback, pFile, flags); + + if (MZ_FCLOSE(pFile) == EOF) { + if (status) + mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); + + status = MZ_FALSE; + } + +# if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO) + if (status) + mz_zip_set_file_times(pDst_filename, file_stat.m_time, + file_stat.m_time); +# endif + + return status; +} + +mz_bool mz_zip_reader_extract_file_to_file( + mz_zip_archive *pZip, const char *pArchive_filename, + const char *pDst_filename, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, + flags, &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_file(pZip, file_index, + pDst_filename, flags); +} + +mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, + mz_uint file_index, + MZ_FILE *pFile, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + if ((file_stat.m_is_directory) || (!file_stat.m_is_supported)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + return mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_file_write_callback, pFile, flags); +} + +mz_bool mz_zip_reader_extract_file_to_cfile( + mz_zip_archive *pZip, const char *pArchive_filename, + MZ_FILE *pFile, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, + flags, &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_cfile(pZip, file_index, pFile, + flags); +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +static size_t mz_zip_compute_crc32_callback(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, + size_t n) { + mz_uint32 *p = (mz_uint32 *) pOpaque; + (void) file_ofs; + *p = (mz_uint32) mz_crc32(*p, (const mz_uint8 *) pBuf, n); + return n; +} + +mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + mz_zip_internal_state *pState; + const mz_uint8 *pCentral_dir_header; + mz_bool found_zip64_ext_data_in_cdir = MZ_FALSE; + mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + mz_uint64 local_header_ofs = 0; + mz_uint32 local_header_filename_len, local_header_extra_len, + local_header_crc32; + mz_uint64 local_header_comp_size, local_header_uncomp_size; + mz_uint32 uncomp_crc32 = MZ_CRC32_INIT; + mz_bool has_data_descriptor; + mz_uint32 local_header_bit_flags; + + mz_zip_array file_data_array; + mz_zip_array_init(&file_data_array, 1); + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || + (!pZip->m_pFree) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (file_index > pZip->m_total_files) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + pCentral_dir_header = mz_zip_get_cdh(pZip, file_index); + + if (!mz_zip_file_stat_internal(pZip, file_index, + pCentral_dir_header, &file_stat, + &found_zip64_ext_data_in_cdir)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_uncomp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_is_encrypted) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports stored and deflate. */ + if ((file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + if (!file_stat.m_is_supported) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + /* Read and parse the local directory entry. */ + local_header_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, local_header_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + local_header_filename_len = MZ_READ_LE16( + pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS); + local_header_extra_len = MZ_READ_LE16(pLocal_header + + MZ_ZIP_LDH_EXTRA_LEN_OFS); + local_header_comp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS); + local_header_uncomp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS); + local_header_crc32 = MZ_READ_LE32(pLocal_header + + MZ_ZIP_LDH_CRC32_OFS); + local_header_bit_flags = MZ_READ_LE16(pLocal_header + + MZ_ZIP_LDH_BIT_FLAG_OFS); + has_data_descriptor = (local_header_bit_flags & 8) != 0; + + if (local_header_filename_len != strlen(file_stat.m_filename)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len + local_header_extra_len + + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (!mz_zip_array_resize( + pZip, &file_data_array, + MZ_MAX(local_header_filename_len, local_header_extra_len), + MZ_FALSE)) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + goto handle_failure; + } + + if (local_header_filename_len) { + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE, + file_data_array.m_p, + local_header_filename_len) != + local_header_filename_len) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + /* I've seen 1 archive that had the same pathname, but used + * backslashes in the local dir and forward slashes in the central + * dir. Do we care about this? For now, this case will fail + * validation. */ + if (memcmp(file_stat.m_filename, file_data_array.m_p, + local_header_filename_len) != 0) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } + + if ((local_header_extra_len) && + ((local_header_comp_size == MZ_UINT32_MAX) || + (local_header_uncomp_size == MZ_UINT32_MAX))) { + mz_uint32 extra_size_remaining = local_header_extra_len; + const mz_uint8 *pExtra_data = (const mz_uint8 *) + file_data_array.m_p; + + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len, + file_data_array.m_p, local_header_extra_len) != + local_header_extra_len) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pSrc_field_data = pExtra_data + + sizeof(mz_uint32); + + if (field_data_size < sizeof(mz_uint64) * 2) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data); + local_header_comp_size = MZ_READ_LE64(pSrc_field_data + + sizeof(mz_uint64)); + + found_zip64_ext_data_in_ldir = MZ_TRUE; + break; + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + } + + /* TODO: parse local header extra data when local_header_comp_size + * is 0xFFFFFFFF! (big_descriptor.zip) */ + /* I've seen zips in the wild with the data descriptor bit set, but + * proper local header values and bogus data descriptors */ + if ((has_data_descriptor) && (!local_header_comp_size) && + (!local_header_crc32)) { + mz_uint8 descriptor_buf[32]; + mz_bool has_id; + const mz_uint8 *pSrc; + mz_uint32 file_crc32; + mz_uint64 comp_size = 0, uncomp_size = 0; + + mz_uint32 num_descriptor_uint32s = + ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) ? 6 : 4; + + if (pZip->m_pRead( + pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len + local_header_extra_len + + file_stat.m_comp_size, + descriptor_buf, + sizeof(mz_uint32) * num_descriptor_uint32s) != + (sizeof(mz_uint32) * num_descriptor_uint32s)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + has_id = (MZ_READ_LE32(descriptor_buf) == + MZ_ZIP_DATA_DESCRIPTOR_ID); + pSrc = has_id ? (descriptor_buf + sizeof(mz_uint32)) + : descriptor_buf; + + file_crc32 = MZ_READ_LE32(pSrc); + + if ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) { + comp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32)); + uncomp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32) + + sizeof(mz_uint64)); + } else { + comp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32)); + uncomp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32) + + sizeof(mz_uint32)); + } + + if ((file_crc32 != file_stat.m_crc32) || + (comp_size != file_stat.m_comp_size) || + (uncomp_size != file_stat.m_uncomp_size)) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } else { + if ((local_header_crc32 != file_stat.m_crc32) || + (local_header_comp_size != file_stat.m_comp_size) || + (local_header_uncomp_size != file_stat.m_uncomp_size)) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } + + mz_zip_array_clear(pZip, &file_data_array); + + if ((flags & MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY) == 0) { + if (!mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_compute_crc32_callback, + &uncomp_crc32, 0)) + return MZ_FALSE; + + /* 1 more check to be sure, although the extract checks too. */ + if (uncomp_crc32 != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + return MZ_FALSE; + } + } + + return MZ_TRUE; + +handle_failure: + mz_zip_array_clear(pZip, &file_data_array); + return MZ_FALSE; +} + +mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags) { + mz_zip_internal_state *pState; + mz_uint32 i; + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || + (!pZip->m_pFree) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + /* Basic sanity checks */ + if (!pState->m_zip64) { + if (pZip->m_total_files > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (pZip->m_archive_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } else { + if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } + + for (i = 0; i < pZip->m_total_files; i++) { + if (MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG & flags) { + mz_uint32 found_index; + mz_zip_archive_file_stat stat; + + if (!mz_zip_reader_file_stat(pZip, i, &stat)) + return MZ_FALSE; + + if (!mz_zip_reader_locate_file_v2(pZip, stat.m_filename, NULL, + 0, &found_index)) + return MZ_FALSE; + + /* This check can fail if there are duplicate filenames in the + * archive (which we don't check for when writing - that's up to + * the user) */ + if (found_index != i) + return mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + } + + if (!mz_zip_validate_file(pZip, i, flags)) + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, + mz_uint flags, + mz_zip_error *pErr) { + mz_bool success = MZ_TRUE; + mz_zip_archive zip; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + if ((!pMem) || (!size)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + mz_zip_zero_struct(&zip); + + if (!mz_zip_reader_init_mem(&zip, pMem, size, flags)) { + if (pErr) + *pErr = zip.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_validate_archive(&zip, flags)) { + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (!mz_zip_reader_end_internal(&zip, success)) { + if (!actual_err) + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (pErr) + *pErr = actual_err; + + return success; +} + +# ifndef MINIZ_NO_STDIO +mz_bool mz_zip_validate_file_archive(const char *pFilename, + mz_uint flags, + mz_zip_error *pErr) { + mz_bool success = MZ_TRUE; + mz_zip_archive zip; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + if (!pFilename) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + mz_zip_zero_struct(&zip); + + if (!mz_zip_reader_init_file_v2(&zip, pFilename, flags, 0, 0)) { + if (pErr) + *pErr = zip.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_validate_archive(&zip, flags)) { + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (!mz_zip_reader_end_internal(&zip, success)) { + if (!actual_err) + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (pErr) + *pErr = actual_err; + + return success; +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +/* ------------------- .ZIP archive writing */ + +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + +static MZ_FORCEINLINE void mz_write_le16(mz_uint8 *p, mz_uint16 v) { + p[0] = (mz_uint8) v; + p[1] = (mz_uint8) (v >> 8); +} +static MZ_FORCEINLINE void mz_write_le32(mz_uint8 *p, mz_uint32 v) { + p[0] = (mz_uint8) v; + p[1] = (mz_uint8) (v >> 8); + p[2] = (mz_uint8) (v >> 16); + p[3] = (mz_uint8) (v >> 24); +} +static MZ_FORCEINLINE void mz_write_le64(mz_uint8 *p, mz_uint64 v) { + mz_write_le32(p, (mz_uint32) v); + mz_write_le32(p + sizeof(mz_uint32), (mz_uint32) (v >> 32)); +} + +# define MZ_WRITE_LE16(p, v) \ + mz_write_le16((mz_uint8 *) (p), (mz_uint16) (v)) +# define MZ_WRITE_LE32(p, v) \ + mz_write_le32((mz_uint8 *) (p), (mz_uint32) (v)) +# define MZ_WRITE_LE64(p, v) \ + mz_write_le64((mz_uint8 *) (p), (mz_uint64) (v)) + +static size_t mz_zip_heap_write_func(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + mz_zip_internal_state *pState = pZip->m_pState; + mz_uint64 new_size = MZ_MAX(file_ofs + n, pState->m_mem_size); + + if (!n) + return 0; + + /* An allocation this big is likely to just fail on 32-bit systems, + * so don't even go there. */ + if ((sizeof(size_t) == sizeof(mz_uint32)) && + (new_size > 0x7FFFFFFF)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + return 0; + } + + if (new_size > pState->m_mem_capacity) { + void *pNew_block; + size_t new_capacity = MZ_MAX(64, pState->m_mem_capacity); + + while (new_capacity < new_size) new_capacity *= 2; + + if (NULL == (pNew_block = pZip->m_pRealloc(pZip->m_pAlloc_opaque, + pState->m_pMem, 1, + new_capacity))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return 0; + } + + pState->m_pMem = pNew_block; + pState->m_mem_capacity = new_capacity; + } + memcpy((mz_uint8 *) pState->m_pMem + file_ofs, pBuf, n); + pState->m_mem_size = (size_t) new_size; + return n; +} + +static mz_bool mz_zip_writer_end_internal(mz_zip_archive *pZip, + mz_bool set_last_error) { + mz_zip_internal_state *pState; + mz_bool status = MZ_TRUE; + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || + (!pZip->m_pFree) || + ((pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) && + (pZip->m_zip_mode != + MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED))) { + if (set_last_error) + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + pState = pZip->m_pState; + pZip->m_pState = NULL; + mz_zip_array_clear(pZip, &pState->m_central_dir); + mz_zip_array_clear(pZip, &pState->m_central_dir_offsets); + mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets); + +# ifndef MINIZ_NO_STDIO + if (pState->m_pFile) { + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (MZ_FCLOSE(pState->m_pFile) == EOF) { + if (set_last_error) + mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); + status = MZ_FALSE; + } + } + + pState->m_pFile = NULL; + } +# endif /* #ifndef MINIZ_NO_STDIO */ + + if ((pZip->m_pWrite == mz_zip_heap_write_func) && + (pState->m_pMem)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pState->m_pMem); + pState->m_pMem = NULL; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + pZip->m_zip_mode = MZ_ZIP_MODE_INVALID; + return status; +} + +mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, + mz_uint64 existing_size, + mz_uint flags) { + mz_bool zip64 = (flags & MZ_ZIP_FLAG_WRITE_ZIP64) != 0; + + if ((!pZip) || (pZip->m_pState) || (!pZip->m_pWrite) || + (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) { + if (!pZip->m_pRead) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + if (pZip->m_file_offset_alignment) { + /* Ensure user specified file offset alignment is a power of 2. */ + if (pZip->m_file_offset_alignment & + (pZip->m_file_offset_alignment - 1)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + if (!pZip->m_pAlloc) + pZip->m_pAlloc = miniz_def_alloc_func; + if (!pZip->m_pFree) + pZip->m_pFree = miniz_def_free_func; + if (!pZip->m_pRealloc) + pZip->m_pRealloc = miniz_def_realloc_func; + + pZip->m_archive_size = existing_size; + pZip->m_central_directory_file_ofs = 0; + pZip->m_total_files = 0; + + if (NULL == + (pZip->m_pState = (mz_zip_internal_state *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state)); + + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, + sizeof(mz_uint8)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_central_dir_offsets, sizeof(mz_uint32)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_sorted_central_dir_offsets, + sizeof(mz_uint32)); + + pZip->m_pState->m_zip64 = zip64; + pZip->m_pState->m_zip64_has_extended_info_fields = zip64; + + pZip->m_zip_type = MZ_ZIP_TYPE_USER; + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init(mz_zip_archive *pZip, + mz_uint64 existing_size) { + return mz_zip_writer_init_v2(pZip, existing_size, 0); +} + +mz_bool mz_zip_writer_init_heap_v2( + mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, + size_t initial_allocation_size, mz_uint flags) { + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_mem_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, + flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_HEAP; + + if (0 != + (initial_allocation_size = MZ_MAX( + initial_allocation_size, size_to_reserve_at_beginning))) { + if (NULL == + (pZip->m_pState->m_pMem = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, initial_allocation_size))) { + mz_zip_writer_end_internal(pZip, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + pZip->m_pState->m_mem_capacity = initial_allocation_size; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, + size_t size_to_reserve_at_beginning, + size_t initial_allocation_size) { + return mz_zip_writer_init_heap_v2( + pZip, size_to_reserve_at_beginning, initial_allocation_size, 0); +} + +# ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_write_func(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile); + + file_ofs += pZip->m_pState->m_file_archive_start_ofs; + + if (((mz_int64) file_ofs < 0) || + (((cur_ofs != (mz_int64) file_ofs)) && + (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64) file_ofs, + SEEK_SET)))) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + return 0; + } + + return MZ_FWRITE(pBuf, 1, n, pZip->m_pState->m_pFile); +} + +mz_bool mz_zip_writer_init_file( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning) { + return mz_zip_writer_init_file_v2(pZip, pFilename, + size_to_reserve_at_beginning, 0); +} + +mz_bool mz_zip_writer_init_file_v2( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning, mz_uint flags) { + MZ_FILE *pFile; + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, + flags)) + return MZ_FALSE; + + if (NULL == + (pFile = MZ_FOPEN(pFilename, + (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + ? "w+b" + : "wb"))) { + mz_zip_writer_end(pZip); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + } + + pZip->m_pState->m_pFile = pFile; + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + + if (size_to_reserve_at_beginning) { + mz_uint64 cur_ofs = 0; + char buf[4096]; + + MZ_CLEAR_ARR(buf); + + do { + size_t n = (size_t) MZ_MIN(sizeof(buf), + size_to_reserve_at_beginning); + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_ofs, buf, n) != n) { + mz_zip_writer_end(pZip); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_ofs += n; + size_to_reserve_at_beginning -= n; + } while (size_to_reserve_at_beginning); + } + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint flags) { + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, 0, flags)) + return MZ_FALSE; + + pZip->m_pState->m_pFile = pFile; + pZip->m_pState->m_file_archive_start_ofs = MZ_FTELL64( + pZip->m_pState->m_pFile); + pZip->m_zip_type = MZ_ZIP_TYPE_CFILE; + + return MZ_TRUE; +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags) { + mz_zip_internal_state *pState; + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ZIP64) { + /* We don't support converting a non-zip64 file to zip64 - this + * seems like more trouble than it's worth. (What about the + * existing 32-bit data descriptors that could follow the + * compressed data?) */ + if (!pZip->m_pState->m_zip64) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* No sense in trying to write to an archive that's already at the + * support max size */ + if (pZip->m_pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + if ((pZip->m_archive_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + pState = pZip->m_pState; + + if (pState->m_pFile) { +# ifdef MINIZ_NO_STDIO + (void) pFilename; + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); +# else + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (!pFilename) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Archive is being read from stdio and was originally opened + * only for reading. Try to reopen as writable. */ + if (NULL == (pState->m_pFile = MZ_FREOPEN(pFilename, "r+b", + pState->m_pFile))) { + /* The mz_zip_archive is now in a bogus state because + * pState->m_pFile is NULL, so just close it. */ + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + } + } + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; +# endif /* #ifdef MINIZ_NO_STDIO */ + } else if (pState->m_pMem) { + /* Archive lives in a memory block. Assume it's from the heap that + * we can resize using the realloc callback. */ + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState->m_mem_capacity = pState->m_mem_size; + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + } + /* Archive is being read via a user provided read function - make + sure the user has specified a write function too. */ + else if (!pZip->m_pWrite) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Start writing new files at the archive's current central + * directory location. */ + /* TODO: We could add a flag that lets the user start writing + * immediately AFTER the existing central dir - this would be safer. + */ + pZip->m_archive_size = pZip->m_central_directory_file_ofs; + pZip->m_central_directory_file_ofs = 0; + + /* Clear the sorted central dir offsets, they aren't useful or + * maintained now. */ + /* Even though we're now in write mode, files can still be extracted + * and verified, but file locates will be slow. */ + /* TODO: We could easily maintain the sorted central directory + * offsets. */ + mz_zip_array_clear(pZip, + &pZip->m_pState->m_sorted_central_dir_offsets); + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, + const char *pFilename) { + return mz_zip_writer_init_from_reader_v2(pZip, pFilename, 0); +} + +/* TODO: pArchive_name is a terrible name here! */ +mz_bool mz_zip_writer_add_mem(mz_zip_archive *pZip, + const char *pArchive_name, + const void *pBuf, size_t buf_size, + mz_uint level_and_flags) { + return mz_zip_writer_add_mem_ex(pZip, pArchive_name, pBuf, buf_size, + NULL, 0, level_and_flags, 0, 0); +} + +typedef struct { + mz_zip_archive *m_pZip; + mz_uint64 m_cur_archive_file_ofs; + mz_uint64 m_comp_size; +} mz_zip_writer_add_state; + +static mz_bool mz_zip_writer_add_put_buf_callback(const void *pBuf, + int len, + void *pUser) { + mz_zip_writer_add_state *pState = (mz_zip_writer_add_state *) pUser; + if ((int) pState->m_pZip->m_pWrite(pState->m_pZip->m_pIO_opaque, + pState->m_cur_archive_file_ofs, + pBuf, len) != len) + return MZ_FALSE; + + pState->m_cur_archive_file_ofs += len; + pState->m_comp_size += len; + return MZ_TRUE; +} + +# define MZ_ZIP64_MAX_LOCAL_EXTRA_FIELD_SIZE \ + (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 2) +# define MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE \ + (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 3) +static mz_uint32 mz_zip_writer_create_zip64_extra_data( + mz_uint8 *pBuf, mz_uint64 *pUncomp_size, mz_uint64 *pComp_size, + mz_uint64 *pLocal_header_ofs) { + mz_uint8 *pDst = pBuf; + mz_uint32 field_size = 0; + + MZ_WRITE_LE16(pDst + 0, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID); + MZ_WRITE_LE16(pDst + 2, 0); + pDst += sizeof(mz_uint16) * 2; + + if (pUncomp_size) { + MZ_WRITE_LE64(pDst, *pUncomp_size); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + if (pComp_size) { + MZ_WRITE_LE64(pDst, *pComp_size); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + if (pLocal_header_ofs) { + MZ_WRITE_LE64(pDst, *pLocal_header_ofs); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + MZ_WRITE_LE16(pBuf + 2, field_size); + + return (mz_uint32) (pDst - pBuf); +} + +static mz_bool mz_zip_writer_create_local_dir_header( + mz_zip_archive *pZip, mz_uint8 *pDst, mz_uint16 filename_size, + mz_uint16 extra_size, mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date) { + (void) pZip; + memset(pDst, 0, MZ_ZIP_LOCAL_DIR_HEADER_SIZE); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_SIG_OFS, + MZ_ZIP_LOCAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_VERSION_NEEDED_OFS, + method ? 20 : 0); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_BIT_FLAG_OFS, bit_flags); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_METHOD_OFS, method); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_TIME_OFS, dos_time); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_DATE_OFS, dos_date); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_CRC32_OFS, uncomp_crc32); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS, + MZ_MIN(comp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS, + MZ_MIN(uncomp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILENAME_LEN_OFS, filename_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_EXTRA_LEN_OFS, extra_size); + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_create_central_dir_header( + mz_zip_archive *pZip, mz_uint8 *pDst, mz_uint16 filename_size, + mz_uint16 extra_size, mz_uint16 comment_size, + mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date, + mz_uint64 local_header_ofs, mz_uint32 ext_attributes) { + (void) pZip; + memset(pDst, 0, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_SIG_OFS, + MZ_ZIP_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_VERSION_NEEDED_OFS, + method ? 20 : 0); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_BIT_FLAG_OFS, bit_flags); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_METHOD_OFS, method); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_TIME_OFS, dos_time); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_DATE_OFS, dos_date); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_CRC32_OFS, uncomp_crc32); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, + MZ_MIN(comp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, + MZ_MIN(uncomp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILENAME_LEN_OFS, filename_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_EXTRA_LEN_OFS, extra_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_COMMENT_LEN_OFS, comment_size); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS, ext_attributes); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + MZ_MIN(local_header_ofs, MZ_UINT32_MAX)); + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_add_to_central_dir( + mz_zip_archive *pZip, const char *pFilename, + mz_uint16 filename_size, const void *pExtra, mz_uint16 extra_size, + const void *pComment, mz_uint16 comment_size, + mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date, + mz_uint64 local_header_ofs, mz_uint32 ext_attributes, + const char *user_extra_data, mz_uint user_extra_data_len) { + mz_zip_internal_state *pState = pZip->m_pState; + mz_uint32 central_dir_ofs = (mz_uint32) + pState->m_central_dir.m_size; + size_t orig_central_dir_size = pState->m_central_dir.m_size; + mz_uint8 central_dir_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE]; + + if (!pZip->m_pState->m_zip64) { + if (local_header_ofs > 0xFFFFFFFF) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64) pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + extra_size + + user_extra_data_len + comment_size) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!mz_zip_writer_create_central_dir_header( + pZip, central_dir_header, filename_size, + (mz_uint16) (extra_size + user_extra_data_len), + comment_size, uncomp_size, comp_size, uncomp_crc32, method, + bit_flags, dos_time, dos_date, local_header_ofs, + ext_attributes)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if ((!mz_zip_array_push_back(pZip, &pState->m_central_dir, + central_dir_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pFilename, filename_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pExtra, + extra_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + user_extra_data, + user_extra_data_len)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pComment, + comment_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, + ¢ral_dir_ofs, 1))) { + /* Try to resize the central directory array back into its + * original state. */ + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_validate_archive_name( + const char *pArchive_name) { + /* Basic ZIP archive filename validity checks: Valid filenames + * cannot start with a forward slash, cannot contain a drive letter, + * and cannot use DOS-style backward slashes. */ + if (*pArchive_name == '/') + return MZ_FALSE; + + /* Making sure the name does not contain drive letters or DOS style + * backward slashes is the responsibility of the program using + * miniz*/ + + return MZ_TRUE; +} + +static mz_uint +mz_zip_writer_compute_padding_needed_for_file_alignment( + mz_zip_archive *pZip) { + mz_uint32 n; + if (!pZip->m_file_offset_alignment) + return 0; + n = (mz_uint32) (pZip->m_archive_size & + (pZip->m_file_offset_alignment - 1)); + return (mz_uint) ((pZip->m_file_offset_alignment - n) & + (pZip->m_file_offset_alignment - 1)); +} + +static mz_bool mz_zip_writer_write_zeros(mz_zip_archive *pZip, + mz_uint64 cur_file_ofs, + mz_uint32 n) { + char buf[4096]; + memset(buf, 0, MZ_MIN(sizeof(buf), n)); + while (n) { + mz_uint32 s = MZ_MIN(sizeof(buf), n); + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_file_ofs, buf, s) != s) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_file_ofs += s; + n -= s; + } + return MZ_TRUE; +} + +mz_bool mz_zip_writer_add_mem_ex( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32) { + return mz_zip_writer_add_mem_ex_v2( + pZip, pArchive_name, pBuf, buf_size, pComment, comment_size, + level_and_flags, uncomp_size, uncomp_crc32, NULL, NULL, 0, NULL, + 0); +} + +mz_bool mz_zip_writer_add_mem_ex_v2( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32, MZ_TIME_T *last_modified, + const char *user_extra_data, mz_uint user_extra_data_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + mz_uint16 method = 0, dos_time = 0, dos_date = 0; + mz_uint level, ext_attributes = 0, num_alignment_padding_bytes; + mz_uint64 local_dir_header_ofs = pZip->m_archive_size, + cur_archive_file_ofs = pZip->m_archive_size, + comp_size = 0; + size_t archive_name_size; + mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + tdefl_compressor *pComp = NULL; + mz_bool store_data_uncompressed; + mz_zip_internal_state *pState; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_uint16 bit_flags = 0; + + if ((int) level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + + if (uncomp_size || + (buf_size && !(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) + bit_flags |= MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR; + + if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) + bit_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8; + + level = level_and_flags & 0xF; + store_data_uncompressed = + ((!level) || (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)); + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || + ((buf_size) && (!pBuf)) || (!pArchive_name) || + ((comment_size) && (!pComment)) || + (level > MZ_UBER_COMPRESSION)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if (pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */ + } + if (((mz_uint64) buf_size > 0xFFFFFFFF) || + (uncomp_size > 0xFFFFFFFF)) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + + if ((!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (uncomp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + +# ifndef MINIZ_NO_TIME + if (last_modified != NULL) { + mz_zip_time_t_to_dos_time(*last_modified, &dos_time, &dos_date); + } else { + MZ_TIME_T cur_time; + time(&cur_time); + mz_zip_time_t_to_dos_time(cur_time, &dos_time, &dos_date); + } +# endif /* #ifndef MINIZ_NO_TIME */ + + if (!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + uncomp_crc32 = (mz_uint32) mz_crc32( + MZ_CRC32_INIT, (const mz_uint8 *) pBuf, buf_size); + uncomp_size = buf_size; + if (uncomp_size <= 3) { + level = 0; + store_data_uncompressed = MZ_TRUE; + } + } + + archive_name_size = strlen(pArchive_name); + if (archive_name_size > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64) pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= + MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!pState->m_zip64) { + /* Bail early if the archive would obviously become too large */ + if ((pZip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + comment_size + user_extra_data_len + + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + + user_extra_data_central_len + + MZ_ZIP_DATA_DESCRIPTER_SIZE32) > 0xFFFFFFFF) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + + if ((archive_name_size) && + (pArchive_name[archive_name_size - 1] == '/')) { + /* Set DOS Subdirectory attribute bit. */ + ext_attributes |= MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG; + + /* Subdirectories cannot contain data. */ + if ((buf_size) || (uncomp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* Try to do any allocations before writing to the archive, so if an + * allocation fails the file remains unmodified. (A good idea if + * we're doing an in-place modification.) */ + if ((!mz_zip_array_ensure_room( + pZip, &pState->m_central_dir, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + comment_size + + (pState->m_zip64 ? MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + : 0))) || + (!mz_zip_array_ensure_room(pZip, &pState->m_central_dir_offsets, + 1))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if ((!store_data_uncompressed) && (buf_size)) { + if (NULL == + (pComp = (tdefl_compressor *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, + num_alignment_padding_bytes)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return MZ_FALSE; + } + + local_dir_header_ofs += num_alignment_padding_bytes; + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((local_dir_header_ofs & + (pZip->m_file_offset_alignment - 1)) == 0); + } + cur_archive_file_ofs += num_alignment_padding_bytes; + + MZ_CLEAR_ARR(local_dir_header); + + if (!store_data_uncompressed || + (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + method = MZ_DEFLATED; + } + + if (pState->m_zip64) { + if (uncomp_size >= MZ_UINT32_MAX || + local_dir_header_ofs >= MZ_UINT32_MAX) { + pExtra_data = extra_data; + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) (extra_size + user_extra_data_len), 0, 0, 0, + method, bit_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_archive_file_ofs += archive_name_size; + + if (pExtra_data != NULL) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + extra_data, extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += extra_size; + } + } else { + if ((comp_size > MZ_UINT32_MAX) || + (cur_archive_file_ofs > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) user_extra_data_len, 0, 0, 0, method, + bit_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_archive_file_ofs += archive_name_size; + } + + if (user_extra_data_len > 0) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + user_extra_data, + user_extra_data_len) != user_extra_data_len) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += user_extra_data_len; + } + + if (store_data_uncompressed) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pBuf, + buf_size) != buf_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += buf_size; + comp_size = buf_size; + } else if (buf_size) { + mz_zip_writer_add_state state; + + state.m_pZip = pZip; + state.m_cur_archive_file_ofs = cur_archive_file_ofs; + state.m_comp_size = 0; + + if ((tdefl_init(pComp, mz_zip_writer_add_put_buf_callback, &state, + tdefl_create_comp_flags_from_zip_params( + level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) || + (tdefl_compress_buffer(pComp, pBuf, buf_size, TDEFL_FINISH) != + TDEFL_STATUS_DONE)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED); + } + + comp_size = state.m_comp_size; + cur_archive_file_ofs = state.m_cur_archive_file_ofs; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + pComp = NULL; + + if (uncomp_size) { + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32; + + MZ_ASSERT(bit_flags & MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR); + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32); + if (pExtra_data == NULL) { + if (comp_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(local_dir_footer + 8, comp_size); + MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size); + } else { + MZ_WRITE_LE64(local_dir_footer + 8, comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size); + local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_footer, local_dir_footer_size) != + local_dir_footer_size) + return MZ_FALSE; + + cur_archive_file_ofs += local_dir_footer_size; + } + + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_add_to_central_dir( + pZip, pArchive_name, (mz_uint16) archive_name_size, + pExtra_data, (mz_uint16) extra_size, pComment, comment_size, + uncomp_size, comp_size, uncomp_crc32, method, bit_flags, + dos_time, dos_date, local_dir_header_ofs, ext_attributes, + user_extra_data_central, user_extra_data_central_len)) + return MZ_FALSE; + + pZip->m_total_files++; + pZip->m_archive_size = cur_archive_file_ofs; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_add_read_buf_callback( + mz_zip_archive *pZip, const char *pArchive_name, + mz_file_read_func read_callback, void *callback_opaque, + mz_uint64 max_size, const MZ_TIME_T *pFile_time, + const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, const char *user_extra_data, + mz_uint user_extra_data_len, const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + mz_uint16 gen_flags; + mz_uint uncomp_crc32 = MZ_CRC32_INIT, level, + num_alignment_padding_bytes; + mz_uint16 method = 0, dos_time = 0, dos_date = 0, + ext_attributes = 0; + mz_uint64 local_dir_header_ofs, + cur_archive_file_ofs = pZip->m_archive_size, uncomp_size = 0, + comp_size = 0; + size_t archive_name_size; + mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_zip_internal_state *pState; + mz_uint64 file_ofs = 0, cur_archive_header_file_ofs; + + if ((int) level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + level = level_and_flags & 0xF; + + gen_flags = (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) + ? 0 + : MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR; + + if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) + gen_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8; + + /* Sanity checks */ + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || (!pArchive_name) || + ((comment_size) && (!pComment)) || + (level > MZ_UBER_COMPRESSION)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if ((!pState->m_zip64) && (max_size > MZ_UINT32_MAX)) { + /* Source file is too large for non-zip64 */ + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + pState->m_zip64 = MZ_TRUE; + } + + /* We could support this, but why? */ + if (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + if (pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */ + } + } + + archive_name_size = strlen(pArchive_name); + if (archive_name_size > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64) pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= + MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!pState->m_zip64) { + /* Bail early if the archive would obviously become too large */ + if ((pZip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + comment_size + user_extra_data_len + + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 1024 + + MZ_ZIP_DATA_DESCRIPTER_SIZE32 + + user_extra_data_central_len) > 0xFFFFFFFF) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + +# ifndef MINIZ_NO_TIME + if (pFile_time) { + mz_zip_time_t_to_dos_time(*pFile_time, &dos_time, &dos_date); + } +# endif + + if (max_size <= 3) + level = 0; + + if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, + num_alignment_padding_bytes)) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += num_alignment_padding_bytes; + local_dir_header_ofs = cur_archive_file_ofs; + + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((cur_archive_file_ofs & + (pZip->m_file_offset_alignment - 1)) == 0); + } + + if (max_size && level) { + method = MZ_DEFLATED; + } + + MZ_CLEAR_ARR(local_dir_header); + if (pState->m_zip64) { + if (max_size >= MZ_UINT32_MAX || + local_dir_header_ofs >= MZ_UINT32_MAX) { + pExtra_data = extra_data; + if (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (max_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (max_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + else + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, NULL, NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) (extra_size + user_extra_data_len), 0, 0, 0, + method, gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += archive_name_size; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + extra_data, extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += extra_size; + } else { + if ((comp_size > MZ_UINT32_MAX) || + (cur_archive_file_ofs > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) user_extra_data_len, 0, 0, 0, method, + gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += archive_name_size; + } + + if (user_extra_data_len > 0) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + user_extra_data, + user_extra_data_len) != user_extra_data_len) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += user_extra_data_len; + } + + if (max_size) { + void *pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + MZ_ZIP_MAX_IO_BUF_SIZE); + if (!pRead_buf) { + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!level) { + while (1) { + size_t n = read_callback(callback_opaque, file_ofs, pRead_buf, + MZ_ZIP_MAX_IO_BUF_SIZE); + if (n == 0) + break; + + if ((n > MZ_ZIP_MAX_IO_BUF_SIZE) || + (file_ofs + n > max_size)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pRead_buf, n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + file_ofs += n; + uncomp_crc32 = (mz_uint32) mz_crc32( + uncomp_crc32, (const mz_uint8 *) pRead_buf, n); + cur_archive_file_ofs += n; + } + uncomp_size = file_ofs; + comp_size = uncomp_size; + } else { + mz_bool result = MZ_FALSE; + mz_zip_writer_add_state state; + tdefl_compressor *pComp = (tdefl_compressor *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)); + if (!pComp) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + state.m_pZip = pZip; + state.m_cur_archive_file_ofs = cur_archive_file_ofs; + state.m_comp_size = 0; + + if (tdefl_init(pComp, mz_zip_writer_add_put_buf_callback, + &state, + tdefl_create_comp_flags_from_zip_params( + level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + } + + for (;;) { + tdefl_status status; + tdefl_flush flush = TDEFL_NO_FLUSH; + + size_t n = read_callback(callback_opaque, file_ofs, pRead_buf, + MZ_ZIP_MAX_IO_BUF_SIZE); + if ((n > MZ_ZIP_MAX_IO_BUF_SIZE) || + (file_ofs + n > max_size)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + break; + } + + file_ofs += n; + uncomp_crc32 = (mz_uint32) mz_crc32( + uncomp_crc32, (const mz_uint8 *) pRead_buf, n); + + if (pZip->m_pNeeds_keepalive != NULL && + pZip->m_pNeeds_keepalive(pZip->m_pIO_opaque)) + flush = TDEFL_FULL_FLUSH; + + if (n == 0) + flush = TDEFL_FINISH; + + status = tdefl_compress_buffer(pComp, pRead_buf, n, flush); + if (status == TDEFL_STATUS_DONE) { + result = MZ_TRUE; + break; + } else if (status != TDEFL_STATUS_OKAY) { + mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED); + break; + } + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + + if (!result) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return MZ_FALSE; + } + + uncomp_size = file_ofs; + comp_size = state.m_comp_size; + cur_archive_file_ofs = state.m_cur_archive_file_ofs; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + } + + if (!(level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE)) { + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32; + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32); + if (pExtra_data == NULL) { + if (comp_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(local_dir_footer + 8, comp_size); + MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size); + } else { + MZ_WRITE_LE64(local_dir_footer + 8, comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size); + local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_footer, local_dir_footer_size) != + local_dir_footer_size) + return MZ_FALSE; + + cur_archive_file_ofs += local_dir_footer_size; + } + + if (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) { + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (max_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (max_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) (extra_size + user_extra_data_len), + (max_size >= MZ_UINT32_MAX) ? MZ_UINT32_MAX : uncomp_size, + (max_size >= MZ_UINT32_MAX) ? MZ_UINT32_MAX : comp_size, + uncomp_crc32, method, gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + cur_archive_header_file_ofs = local_dir_header_ofs; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, + cur_archive_header_file_ofs, local_dir_header, + sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + if (pExtra_data != NULL) { + cur_archive_header_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, + cur_archive_header_file_ofs, pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_header_file_ofs += archive_name_size; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, + cur_archive_header_file_ofs, extra_data, + extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_header_file_ofs += extra_size; + } + } + + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_add_to_central_dir( + pZip, pArchive_name, (mz_uint16) archive_name_size, + pExtra_data, (mz_uint16) extra_size, pComment, comment_size, + uncomp_size, comp_size, uncomp_crc32, method, gen_flags, + dos_time, dos_date, local_dir_header_ofs, ext_attributes, + user_extra_data_central, user_extra_data_central_len)) + return MZ_FALSE; + + pZip->m_total_files++; + pZip->m_archive_size = cur_archive_file_ofs; + + return MZ_TRUE; +} + +# ifndef MINIZ_NO_STDIO + +static size_t mz_file_read_func_stdio(void *pOpaque, + mz_uint64 file_ofs, void *pBuf, + size_t n) { + MZ_FILE *pSrc_file = (MZ_FILE *) pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pSrc_file); + + if (((mz_int64) file_ofs < 0) || + (((cur_ofs != (mz_int64) file_ofs)) && + (MZ_FSEEK64(pSrc_file, (mz_int64) file_ofs, SEEK_SET)))) + return 0; + + return MZ_FREAD(pBuf, 1, n, pSrc_file); +} + +mz_bool mz_zip_writer_add_cfile( + mz_zip_archive *pZip, const char *pArchive_name, + MZ_FILE *pSrc_file, mz_uint64 max_size, + const MZ_TIME_T *pFile_time, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, + const char *user_extra_data, mz_uint user_extra_data_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + return mz_zip_writer_add_read_buf_callback( + pZip, pArchive_name, mz_file_read_func_stdio, pSrc_file, + max_size, pFile_time, pComment, comment_size, level_and_flags, + user_extra_data, user_extra_data_len, user_extra_data_central, + user_extra_data_central_len); +} + +mz_bool mz_zip_writer_add_file(mz_zip_archive *pZip, + const char *pArchive_name, + const char *pSrc_filename, + const void *pComment, + mz_uint16 comment_size, + mz_uint level_and_flags) { + MZ_FILE *pSrc_file = NULL; + mz_uint64 uncomp_size = 0; + MZ_TIME_T file_modified_time; + MZ_TIME_T *pFile_time = NULL; + mz_bool status; + + memset(&file_modified_time, 0, sizeof(file_modified_time)); + +# if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO) + pFile_time = &file_modified_time; + if (!mz_zip_get_file_modified_time(pSrc_filename, + &file_modified_time)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_STAT_FAILED); +# endif + + pSrc_file = MZ_FOPEN(pSrc_filename, "rb"); + if (!pSrc_file) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + MZ_FSEEK64(pSrc_file, 0, SEEK_END); + uncomp_size = MZ_FTELL64(pSrc_file); + MZ_FSEEK64(pSrc_file, 0, SEEK_SET); + + status = mz_zip_writer_add_cfile( + pZip, pArchive_name, pSrc_file, uncomp_size, pFile_time, + pComment, comment_size, level_and_flags, NULL, 0, NULL, 0); + + MZ_FCLOSE(pSrc_file); + + return status; +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +static mz_bool mz_zip_writer_update_zip64_extension_block( + mz_zip_array *pNew_ext, mz_zip_archive *pZip, + const mz_uint8 *pExt, mz_uint32 ext_len, mz_uint64 *pComp_size, + mz_uint64 *pUncomp_size, mz_uint64 *pLocal_header_ofs, + mz_uint32 *pDisk_start) { + /* + 64 should be enough for any new zip64 data */ + if (!mz_zip_array_reserve(pZip, pNew_ext, ext_len + 64, MZ_FALSE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + mz_zip_array_resize(pZip, pNew_ext, 0, MZ_FALSE); + + if ((pUncomp_size) || (pComp_size) || (pLocal_header_ofs) || + (pDisk_start)) { + mz_uint8 new_ext_block[64]; + mz_uint8 *pDst = new_ext_block; + mz_write_le16(pDst, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID); + mz_write_le16(pDst + sizeof(mz_uint16), 0); + pDst += sizeof(mz_uint16) * 2; + + if (pUncomp_size) { + mz_write_le64(pDst, *pUncomp_size); + pDst += sizeof(mz_uint64); + } + + if (pComp_size) { + mz_write_le64(pDst, *pComp_size); + pDst += sizeof(mz_uint64); + } + + if (pLocal_header_ofs) { + mz_write_le64(pDst, *pLocal_header_ofs); + pDst += sizeof(mz_uint64); + } + + if (pDisk_start) { + mz_write_le32(pDst, *pDisk_start); + pDst += sizeof(mz_uint32); + } + + mz_write_le16( + new_ext_block + sizeof(mz_uint16), + (mz_uint16) ((pDst - new_ext_block) - sizeof(mz_uint16) * 2)); + + if (!mz_zip_array_push_back(pZip, pNew_ext, new_ext_block, + pDst - new_ext_block)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if ((pExt) && (ext_len)) { + mz_uint32 extra_size_remaining = ext_len; + const mz_uint8 *pExtra_data = pExt; + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (field_id != MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + if (!mz_zip_array_push_back(pZip, pNew_ext, pExtra_data, + field_total_size)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + } + + return MZ_TRUE; +} + +/* TODO: This func is now pretty freakin complex due to zip64, split + * it up? */ +mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, + mz_zip_archive *pSource_zip, + mz_uint src_file_index) { + mz_uint n, bit_flags, num_alignment_padding_bytes, + src_central_dir_following_data_size; + mz_uint64 src_archive_bytes_remaining, local_dir_header_ofs; + mz_uint64 cur_src_file_ofs, cur_dst_file_ofs; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + mz_uint8 new_central_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE]; + size_t orig_central_dir_size; + mz_zip_internal_state *pState; + void *pBuf; + const mz_uint8 *pSrc_central_header; + mz_zip_archive_file_stat src_file_stat; + mz_uint32 src_filename_len, src_comment_len, src_ext_len; + mz_uint32 local_header_filename_size, local_header_extra_len; + mz_uint64 local_header_comp_size, local_header_uncomp_size; + mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE; + + /* Sanity checks */ + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || + (!pSource_zip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + /* Don't support copying files from zip64 archives to non-zip64, + * even though in some cases this is possible */ + if ((pSource_zip->m_pState->m_zip64) && (!pZip->m_pState->m_zip64)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Get pointer to the source central dir header and crack it */ + if (NULL == (pSrc_central_header = mz_zip_get_cdh(pSource_zip, + src_file_index))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (MZ_READ_LE32(pSrc_central_header + MZ_ZIP_CDH_SIG_OFS) != + MZ_ZIP_CENTRAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + src_filename_len = MZ_READ_LE16(pSrc_central_header + + MZ_ZIP_CDH_FILENAME_LEN_OFS); + src_comment_len = MZ_READ_LE16(pSrc_central_header + + MZ_ZIP_CDH_COMMENT_LEN_OFS); + src_ext_len = MZ_READ_LE16(pSrc_central_header + + MZ_ZIP_CDH_EXTRA_LEN_OFS); + src_central_dir_following_data_size = src_filename_len + + src_ext_len + src_comment_len; + + /* TODO: We don't support central dir's >= MZ_UINT32_MAX bytes right + * now (+32 fudge factor in case we need to add more extra data) */ + if ((pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_central_dir_following_data_size + 32) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + if (!pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + /* TODO: Our zip64 support still has some 32-bit limits that may + * not be worth fixing. */ + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } + + if (!mz_zip_file_stat_internal(pSource_zip, src_file_index, + pSrc_central_header, &src_file_stat, + NULL)) + return MZ_FALSE; + + cur_src_file_ofs = src_file_stat.m_local_header_ofs; + cur_dst_file_ofs = pZip->m_archive_size; + + /* Read the source archive's local dir header */ + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + cur_src_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_src_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE; + + /* Compute the total size we need to copy (filename+extra + * data+compressed data) */ + local_header_filename_size = MZ_READ_LE16( + pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS); + local_header_extra_len = MZ_READ_LE16(pLocal_header + + MZ_ZIP_LDH_EXTRA_LEN_OFS); + local_header_comp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS); + local_header_uncomp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS); + src_archive_bytes_remaining = src_file_stat.m_comp_size + + local_header_filename_size + + local_header_extra_len; + + /* Try to find a zip64 extended information field */ + if ((local_header_extra_len) && + ((local_header_comp_size == MZ_UINT32_MAX) || + (local_header_uncomp_size == MZ_UINT32_MAX))) { + mz_zip_array file_data_array; + const mz_uint8 *pExtra_data; + mz_uint32 extra_size_remaining = local_header_extra_len; + + mz_zip_array_init(&file_data_array, 1); + if (!mz_zip_array_resize(pZip, &file_data_array, + local_header_extra_len, MZ_FALSE)) { + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + src_file_stat.m_local_header_ofs + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_size, + file_data_array.m_p, + local_header_extra_len) != + local_header_extra_len) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + pExtra_data = (const mz_uint8 *) file_data_array.m_p; + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pSrc_field_data = pExtra_data + + sizeof(mz_uint32); + + if (field_data_size < sizeof(mz_uint64) * 2) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data); + local_header_comp_size = MZ_READ_LE64( + pSrc_field_data + + sizeof(mz_uint64)); /* may be 0 if there's a descriptor */ + + found_zip64_ext_data_in_ldir = MZ_TRUE; + break; + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + + mz_zip_array_clear(pZip, &file_data_array); + } + + if (!pState->m_zip64) { + /* Try to detect if the new archive will most likely wind up too + * big and bail early (+(sizeof(mz_uint32) * 4) is for the + * optional descriptor which could be present, +64 is a fudge + * factor). */ + /* We also check when the archive is finalized so this doesn't + * need to be perfect. */ + mz_uint64 approx_new_archive_size = + cur_dst_file_ofs + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + src_archive_bytes_remaining + + (sizeof(mz_uint32) * 4) + pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_central_dir_following_data_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 64; + + if (approx_new_archive_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } + + /* Write dest archive padding */ + if (!mz_zip_writer_write_zeros(pZip, cur_dst_file_ofs, + num_alignment_padding_bytes)) + return MZ_FALSE; + + cur_dst_file_ofs += num_alignment_padding_bytes; + + local_dir_header_ofs = cur_dst_file_ofs; + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((local_dir_header_ofs & + (pZip->m_file_offset_alignment - 1)) == 0); + } + + /* The original zip's local header+ext block doesn't change, even + * with zip64, so we can just copy it over to the dest zip */ + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_dst_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE; + + /* Copy over the source archive bytes to the dest archive, also + * ensure we have enough buf space to handle optional data + * descriptor */ + if (NULL == (pBuf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + (size_t) MZ_MAX( + 32U, MZ_MIN((mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE, + src_archive_bytes_remaining))))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + while (src_archive_bytes_remaining) { + n = (mz_uint) MZ_MIN((mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE, + src_archive_bytes_remaining); + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + cur_src_file_ofs, pBuf, n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + cur_src_file_ofs += n; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, + n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_dst_file_ofs += n; + + src_archive_bytes_remaining -= n; + } + + /* Now deal with the optional data descriptor */ + bit_flags = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_BIT_FLAG_OFS); + if (bit_flags & 8) { + /* Copy data descriptor */ + if ((pSource_zip->m_pState->m_zip64) || + (found_zip64_ext_data_in_ldir)) { + /* src is zip64, dest must be zip64 */ + + /* name uint32_t's */ + /* id 1 (optional in zip64?) */ + /* crc 1 */ + /* comp_size 2 */ + /* uncomp_size 2 */ + if (pSource_zip->m_pRead( + pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, + (sizeof(mz_uint32) * 6)) != (sizeof(mz_uint32) * 6)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + n = sizeof(mz_uint32) * + ((MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID) ? 6 : 5); + } else { + /* src is NOT zip64 */ + mz_bool has_id; + + if (pSource_zip->m_pRead( + pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, + sizeof(mz_uint32) * 4) != sizeof(mz_uint32) * 4) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + has_id = (MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID); + + if (pZip->m_pState->m_zip64) { + /* dest is zip64, so upgrade the data descriptor */ + const mz_uint8 *pSrc_descriptor = (const mz_uint8 *) pBuf + + (has_id ? sizeof(mz_uint32) + : 0); + const mz_uint32 src_crc32 = MZ_READ_LE32(pSrc_descriptor); + const mz_uint64 src_comp_size = MZ_READ_LE32( + pSrc_descriptor + sizeof(mz_uint32)); + const mz_uint64 src_uncomp_size = MZ_READ_LE32( + pSrc_descriptor + 2 * sizeof(mz_uint32)); + + mz_write_le32((mz_uint8 *) pBuf, MZ_ZIP_DATA_DESCRIPTOR_ID); + mz_write_le32((mz_uint8 *) pBuf + sizeof(mz_uint32) * 1, + src_crc32); + mz_write_le64((mz_uint8 *) pBuf + sizeof(mz_uint32) * 2, + src_comp_size); + mz_write_le64((mz_uint8 *) pBuf + sizeof(mz_uint32) * 4, + src_uncomp_size); + + n = sizeof(mz_uint32) * 6; + } else { + /* dest is NOT zip64, just copy it as-is */ + n = sizeof(mz_uint32) * (has_id ? 4 : 3); + } + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, + n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_src_file_ofs += n; + cur_dst_file_ofs += n; + } + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + + /* Finally, add the new central dir header */ + orig_central_dir_size = pState->m_central_dir.m_size; + + memcpy(new_central_header, pSrc_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE); + + if (pState->m_zip64) { + /* This is the painful part: We need to write a new central dir + * header + ext block with updated zip64 fields, and ensure the + * old fields (if any) are not included. */ + const mz_uint8 *pSrc_ext = pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_filename_len; + mz_zip_array new_ext_block; + + mz_zip_array_init(&new_ext_block, sizeof(mz_uint8)); + + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, + MZ_UINT32_MAX); + MZ_WRITE_LE32(new_central_header + + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, + MZ_UINT32_MAX); + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + MZ_UINT32_MAX); + + if (!mz_zip_writer_update_zip64_extension_block( + &new_ext_block, pZip, pSrc_ext, src_ext_len, + &src_file_stat.m_comp_size, &src_file_stat.m_uncomp_size, + &local_dir_header_ofs, NULL)) { + mz_zip_array_clear(pZip, &new_ext_block); + return MZ_FALSE; + } + + MZ_WRITE_LE16(new_central_header + MZ_ZIP_CDH_EXTRA_LEN_OFS, + new_ext_block.m_size); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) { + mz_zip_array_clear(pZip, &new_ext_block); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, + src_filename_len)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_ext_block.m_p, + new_ext_block.m_size)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_filename_len + src_ext_len, + src_comment_len)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + mz_zip_array_clear(pZip, &new_ext_block); + } else { + /* sanity checks */ + if (cur_dst_file_ofs > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (local_dir_header_ofs >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + local_dir_header_ofs); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (!mz_zip_array_push_back( + pZip, &pState->m_central_dir, + pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, + src_central_dir_following_data_size)) { + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + } + + /* This shouldn't trigger unless we screwed up during the initial + * sanity checks */ + if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) { + /* TODO: Support central dirs >= 32-bits in size */ + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + } + + n = (mz_uint32) orig_central_dir_size; + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, + &n, 1)) { + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + pZip->m_total_files++; + pZip->m_archive_size = cur_dst_file_ofs; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip) { + mz_zip_internal_state *pState; + mz_uint64 central_dir_ofs, central_dir_size; + mz_uint8 hdr[256]; + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if (pState->m_zip64) { + if ((mz_uint64) pState->m_central_dir.m_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if ((pZip->m_total_files > MZ_UINT16_MAX) || + ((pZip->m_archive_size + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } + + central_dir_ofs = 0; + central_dir_size = 0; + if (pZip->m_total_files) { + /* Write central directory */ + central_dir_ofs = pZip->m_archive_size; + central_dir_size = pState->m_central_dir.m_size; + pZip->m_central_directory_file_ofs = central_dir_ofs; + if (pZip->m_pWrite(pZip->m_pIO_opaque, central_dir_ofs, + pState->m_central_dir.m_p, + (size_t) central_dir_size) != central_dir_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += central_dir_size; + } + + if (pState->m_zip64) { + /* Write zip64 end of central directory header */ + mz_uint64 rel_ofs_to_zip64_ecdr = pZip->m_archive_size; + + MZ_CLEAR_ARR(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDH_SIG_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - + sizeof(mz_uint32) - sizeof(mz_uint64)); + MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS, + 0x031E); /* TODO: always Unix */ + MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS, 0x002D); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, + pZip->m_total_files); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS, + pZip->m_total_files); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_SIZE_OFS, + central_dir_size); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_OFS_OFS, central_dir_ofs); + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE; + + /* Write zip64 end of central directory locator */ + MZ_CLEAR_ARR(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_SIG_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS, + rel_ofs_to_zip64_ecdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS, 1); + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) != + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE; + } + + /* Write end of central directory record */ + MZ_CLEAR_ARR(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_SIG_OFS, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, + MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files)); + MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS, + MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files)); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_SIZE_OFS, + MZ_MIN(MZ_UINT32_MAX, central_dir_size)); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_OFS_OFS, + MZ_MIN(MZ_UINT32_MAX, central_dir_ofs)); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + +# ifndef MINIZ_NO_STDIO + if ((pState->m_pFile) && (MZ_FFLUSH(pState->m_pFile) == EOF)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); +# endif /* #ifndef MINIZ_NO_STDIO */ + + pZip->m_archive_size += MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE; + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED; + return MZ_TRUE; +} + +mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, + void **ppBuf, + size_t *pSize) { + if ((!ppBuf) || (!pSize)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + *ppBuf = NULL; + *pSize = 0; + + if ((!pZip) || (!pZip->m_pState)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_pWrite != mz_zip_heap_write_func) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_finalize_archive(pZip)) + return MZ_FALSE; + + *ppBuf = pZip->m_pState->m_pMem; + *pSize = pZip->m_pState->m_mem_size; + pZip->m_pState->m_pMem = NULL; + pZip->m_pState->m_mem_size = pZip->m_pState->m_mem_capacity = 0; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_end(mz_zip_archive *pZip) { + return mz_zip_writer_end_internal(pZip, MZ_TRUE); +} + +# ifndef MINIZ_NO_STDIO +mz_bool mz_zip_add_mem_to_archive_file_in_place( + const char *pZip_filename, const char *pArchive_name, + const void *pBuf, size_t buf_size, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags) { + return mz_zip_add_mem_to_archive_file_in_place_v2( + pZip_filename, pArchive_name, pBuf, buf_size, pComment, + comment_size, level_and_flags, NULL); +} + +mz_bool mz_zip_add_mem_to_archive_file_in_place_v2( + const char *pZip_filename, const char *pArchive_name, + const void *pBuf, size_t buf_size, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, + mz_zip_error *pErr) { + mz_bool status, created_new_archive = MZ_FALSE; + mz_zip_archive zip_archive; + struct MZ_FILE_STAT_STRUCT file_stat; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + mz_zip_zero_struct(&zip_archive); + if ((int) level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + + if ((!pZip_filename) || (!pArchive_name) || + ((buf_size) && (!pBuf)) || ((comment_size) && (!pComment)) || + ((level_and_flags & 0xF) > MZ_UBER_COMPRESSION)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_FILENAME; + return MZ_FALSE; + } + + /* Important: The regular non-64 bit version of stat() can fail here + * if the file is very large, which could cause the archive to be + * overwritten. */ + /* So be sure to compile with _LARGEFILE64_SOURCE 1 */ + if (MZ_FILE_STAT(pZip_filename, &file_stat) != 0) { + /* Create a new archive. */ + if (!mz_zip_writer_init_file_v2(&zip_archive, pZip_filename, 0, + level_and_flags)) { + if (pErr) + *pErr = zip_archive.m_last_error; + return MZ_FALSE; + } + + created_new_archive = MZ_TRUE; + } else { + /* Append to an existing archive. */ + if (!mz_zip_reader_init_file_v2( + &zip_archive, pZip_filename, + level_and_flags | + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, + 0, 0)) { + if (pErr) + *pErr = zip_archive.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_writer_init_from_reader_v2( + &zip_archive, pZip_filename, level_and_flags)) { + if (pErr) + *pErr = zip_archive.m_last_error; + + mz_zip_reader_end_internal(&zip_archive, MZ_FALSE); + + return MZ_FALSE; + } + } + + status = mz_zip_writer_add_mem_ex(&zip_archive, pArchive_name, pBuf, + buf_size, pComment, comment_size, + level_and_flags, 0, 0); + actual_err = zip_archive.m_last_error; + + /* Always finalize, even if adding failed for some reason, so we + * have a valid central directory. (This may not always succeed, but + * we can try.) */ + if (!mz_zip_writer_finalize_archive(&zip_archive)) { + if (!actual_err) + actual_err = zip_archive.m_last_error; + + status = MZ_FALSE; + } + + if (!mz_zip_writer_end_internal(&zip_archive, status)) { + if (!actual_err) + actual_err = zip_archive.m_last_error; + + status = MZ_FALSE; + } + + if ((!status) && (created_new_archive)) { + /* It's a new archive and something went wrong, so just delete it. + */ + int ignoredStatus = MZ_DELETE_FILE(pZip_filename); + (void) ignoredStatus; + } + + if (pErr) + *pErr = actual_err; + + return status; +} + +void *mz_zip_extract_archive_file_to_heap_v2( + const char *pZip_filename, const char *pArchive_name, + const char *pComment, size_t *pSize, mz_uint flags, + mz_zip_error *pErr) { + mz_uint32 file_index; + mz_zip_archive zip_archive; + void *p = NULL; + + if (pSize) + *pSize = 0; + + if ((!pZip_filename) || (!pArchive_name)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + + return NULL; + } + + mz_zip_zero_struct(&zip_archive); + if (!mz_zip_reader_init_file_v2( + &zip_archive, pZip_filename, + flags | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, 0, 0)) { + if (pErr) + *pErr = zip_archive.m_last_error; + + return NULL; + } + + if (mz_zip_reader_locate_file_v2(&zip_archive, pArchive_name, + pComment, flags, &file_index)) { + p = mz_zip_reader_extract_to_heap(&zip_archive, file_index, pSize, + flags); + } + + mz_zip_reader_end_internal(&zip_archive, p != NULL); + + if (pErr) + *pErr = zip_archive.m_last_error; + + return p; +} + +void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, + const char *pArchive_name, + size_t *pSize, + mz_uint flags) { + return mz_zip_extract_archive_file_to_heap_v2( + pZip_filename, pArchive_name, NULL, pSize, flags, NULL); +} + +# endif /* #ifndef MINIZ_NO_STDIO */ + +# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */ + +/* ------------------- Misc utils */ + +mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip) { + return pZip ? pZip->m_zip_mode : MZ_ZIP_MODE_INVALID; +} + +mz_zip_type mz_zip_get_type(mz_zip_archive *pZip) { + return pZip ? pZip->m_zip_type : MZ_ZIP_TYPE_INVALID; +} + +mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, + mz_zip_error err_num) { + mz_zip_error prev_err; + + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + prev_err = pZip->m_last_error; + + pZip->m_last_error = err_num; + return prev_err; +} + +mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip) { + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + return pZip->m_last_error; +} + +mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip) { + return mz_zip_set_last_error(pZip, MZ_ZIP_NO_ERROR); +} + +mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip) { + mz_zip_error prev_err; + + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + prev_err = pZip->m_last_error; + + pZip->m_last_error = MZ_ZIP_NO_ERROR; + return prev_err; +} + +const char *mz_zip_get_error_string(mz_zip_error mz_err) { + switch (mz_err) { + case MZ_ZIP_NO_ERROR: return "no error"; + case MZ_ZIP_UNDEFINED_ERROR: return "undefined error"; + case MZ_ZIP_TOO_MANY_FILES: return "too many files"; + case MZ_ZIP_FILE_TOO_LARGE: return "file too large"; + case MZ_ZIP_UNSUPPORTED_METHOD: return "unsupported method"; + case MZ_ZIP_UNSUPPORTED_ENCRYPTION: + return "unsupported encryption"; + case MZ_ZIP_UNSUPPORTED_FEATURE: return "unsupported feature"; + case MZ_ZIP_FAILED_FINDING_CENTRAL_DIR: + return "failed finding central directory"; + case MZ_ZIP_NOT_AN_ARCHIVE: return "not a ZIP archive"; + case MZ_ZIP_INVALID_HEADER_OR_CORRUPTED: + return "invalid header or archive is corrupted"; + case MZ_ZIP_UNSUPPORTED_MULTIDISK: + return "unsupported multidisk archive"; + case MZ_ZIP_DECOMPRESSION_FAILED: + return "decompression failed or archive is corrupted"; + case MZ_ZIP_COMPRESSION_FAILED: return "compression failed"; + case MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE: + return "unexpected decompressed size"; + case MZ_ZIP_CRC_CHECK_FAILED: return "CRC-32 check failed"; + case MZ_ZIP_UNSUPPORTED_CDIR_SIZE: + return "unsupported central directory size"; + case MZ_ZIP_ALLOC_FAILED: return "allocation failed"; + case MZ_ZIP_FILE_OPEN_FAILED: return "file open failed"; + case MZ_ZIP_FILE_CREATE_FAILED: return "file create failed"; + case MZ_ZIP_FILE_WRITE_FAILED: return "file write failed"; + case MZ_ZIP_FILE_READ_FAILED: return "file read failed"; + case MZ_ZIP_FILE_CLOSE_FAILED: return "file close failed"; + case MZ_ZIP_FILE_SEEK_FAILED: return "file seek failed"; + case MZ_ZIP_FILE_STAT_FAILED: return "file stat failed"; + case MZ_ZIP_INVALID_PARAMETER: return "invalid parameter"; + case MZ_ZIP_INVALID_FILENAME: return "invalid filename"; + case MZ_ZIP_BUF_TOO_SMALL: return "buffer too small"; + case MZ_ZIP_INTERNAL_ERROR: return "internal error"; + case MZ_ZIP_FILE_NOT_FOUND: return "file not found"; + case MZ_ZIP_ARCHIVE_TOO_LARGE: return "archive is too large"; + case MZ_ZIP_VALIDATION_FAILED: return "validation failed"; + case MZ_ZIP_WRITE_CALLBACK_FAILED: return "write callback failed"; + case MZ_ZIP_TOTAL_ERRORS: return "total errors"; + default: break; + } + + return "unknown error"; +} + +/* Note: Just because the archive is not zip64 doesn't necessarily + * mean it doesn't have Zip64 extended information extra field, argh. + */ +mz_bool mz_zip_is_zip64(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return MZ_FALSE; + + return pZip->m_pState->m_zip64; +} + +size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + + return pZip->m_pState->m_central_dir.m_size; +} + +mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip) { + return pZip ? pZip->m_total_files : 0; +} + +mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip) { + if (!pZip) + return 0; + return pZip->m_archive_size; +} + +mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + return pZip->m_pState->m_file_archive_start_ofs; +} + +MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + return pZip->m_pState->m_pFile; +} + +size_t mz_zip_read_archive_data(mz_zip_archive *pZip, + mz_uint64 file_ofs, void *pBuf, + size_t n) { + if ((!pZip) || (!pZip->m_pState) || (!pBuf) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + return pZip->m_pRead(pZip->m_pIO_opaque, file_ofs, pBuf, n); +} + +mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, + mz_uint file_index, + char *pFilename, + mz_uint filename_buf_size) { + mz_uint n; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + if (filename_buf_size) + pFilename[0] = '\0'; + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return 0; + } + n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + if (filename_buf_size) { + n = MZ_MIN(n, filename_buf_size - 1); + memcpy(pFilename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n); + pFilename[n] = '\0'; + } + return n + 1; +} + +mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, + mz_uint file_index, + mz_zip_archive_file_stat *pStat) { + return mz_zip_file_stat_internal(pZip, file_index, + mz_zip_get_cdh(pZip, file_index), + pStat, NULL); +} + +mz_bool mz_zip_end(mz_zip_archive *pZip) { + if (!pZip) + return MZ_FALSE; + + if (pZip->m_zip_mode == MZ_ZIP_MODE_READING) + return mz_zip_reader_end(pZip); +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + else if ((pZip->m_zip_mode == MZ_ZIP_MODE_WRITING) || + (pZip->m_zip_mode == + MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED)) + return mz_zip_writer_end(pZip); +# endif + + return MZ_FALSE; +} + +# ifdef __cplusplus +} +# endif + +#endif /*#ifndef MINIZ_NO_ARCHIVE_APIS*/ diff --git a/source/kit/miniz/miniz_zip.h b/source/kit/miniz/miniz_zip.h new file mode 100644 index 0000000..46c0b43 --- /dev/null +++ b/source/kit/miniz/miniz_zip.h @@ -0,0 +1,668 @@ +#ifndef KIT_MINIZ_MINIZ_ZIP_H +#define KIT_MINIZ_MINIZ_ZIP_H + +#include "miniz_common.h" +#include "miniz_tdef.h" +#include "miniz_tinfl.h" + +/* ------------------- ZIP archive reading/writing */ + +#ifndef MINIZ_NO_ARCHIVE_APIS + +# ifdef __cplusplus +extern "C" { +# endif + +enum { + /* Note: These enums can be reduced as needed to save memory or + stack space - they are pretty conservative. */ + MZ_ZIP_MAX_IO_BUF_SIZE = 64 * 1024, + MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 512, + MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 512 +}; + +typedef struct { + /* Central directory file index. */ + mz_uint32 m_file_index; + + /* Byte offset of this entry in the archive's central directory. + * Note we currently only support up to UINT_MAX or less bytes in + * the central dir. */ + mz_uint64 m_central_dir_ofs; + + /* These fields are copied directly from the zip's central dir. */ + mz_uint16 m_version_made_by; + mz_uint16 m_version_needed; + mz_uint16 m_bit_flag; + mz_uint16 m_method; + + /* CRC-32 of uncompressed data. */ + mz_uint32 m_crc32; + + /* File's compressed size. */ + mz_uint64 m_comp_size; + + /* File's uncompressed size. Note, I've seen some old archives where + * directory entries had 512 bytes for their uncompressed sizes, but + * when you try to unpack them you actually get 0 bytes. */ + mz_uint64 m_uncomp_size; + + /* Zip internal and external file attributes. */ + mz_uint16 m_internal_attr; + mz_uint32 m_external_attr; + + /* Entry's local header file offset in bytes. */ + mz_uint64 m_local_header_ofs; + + /* Size of comment in bytes. */ + mz_uint32 m_comment_size; + + /* MZ_TRUE if the entry appears to be a directory. */ + mz_bool m_is_directory; + + /* MZ_TRUE if the entry uses encryption/strong encryption (which + * miniz_zip doesn't support) */ + mz_bool m_is_encrypted; + + /* MZ_TRUE if the file is not encrypted, a patch file, and if it + * uses a compression method we support. */ + mz_bool m_is_supported; + + /* Filename. If string ends in '/' it's a subdirectory entry. */ + /* Guaranteed to be zero terminated, may be truncated to fit. */ + char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE]; + + /* Comment field. */ + /* Guaranteed to be zero terminated, may be truncated to fit. */ + char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE]; + +# ifdef MINIZ_NO_TIME + MZ_TIME_T m_padding; +# else + MZ_TIME_T m_time; +# endif +} mz_zip_archive_file_stat; + +typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n); +typedef size_t (*mz_file_write_func)(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, size_t n); +typedef mz_bool (*mz_file_needs_keepalive)(void *pOpaque); + +struct mz_zip_internal_state_tag; +typedef struct mz_zip_internal_state_tag mz_zip_internal_state; + +typedef enum { + MZ_ZIP_MODE_INVALID = 0, + MZ_ZIP_MODE_READING = 1, + MZ_ZIP_MODE_WRITING = 2, + MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3 +} mz_zip_mode; + +typedef enum { + MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100, + MZ_ZIP_FLAG_IGNORE_PATH = 0x0200, + MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400, + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800, + MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG = + 0x1000, /* if enabled, mz_zip_reader_locate_file() will be + called on each file as its validated to ensure the + func finds the file in the central dir (intended for + testing) */ + MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY = + 0x2000, /* validate the local headers, but don't decompress the + entire file and check the crc32 */ + MZ_ZIP_FLAG_WRITE_ZIP64 = + 0x4000, /* always use the zip64 file format, instead of the + original zip file format with automatic switch to + zip64. Use as flags parameter with + mz_zip_writer_init*_v2 */ + MZ_ZIP_FLAG_WRITE_ALLOW_READING = 0x8000, + MZ_ZIP_FLAG_ASCII_FILENAME = 0x10000, + /*After adding a compressed file, seek back + to local file header and set the correct sizes*/ + MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE = 0x20000 +} mz_zip_flags; + +typedef enum { + MZ_ZIP_TYPE_INVALID = 0, + MZ_ZIP_TYPE_USER, + MZ_ZIP_TYPE_MEMORY, + MZ_ZIP_TYPE_HEAP, + MZ_ZIP_TYPE_FILE, + MZ_ZIP_TYPE_CFILE, + MZ_ZIP_TOTAL_TYPES +} mz_zip_type; + +/* miniz error codes. Be sure to update mz_zip_get_error_string() if + * you add or modify this enum. */ +typedef enum { + MZ_ZIP_NO_ERROR = 0, + MZ_ZIP_UNDEFINED_ERROR, + MZ_ZIP_TOO_MANY_FILES, + MZ_ZIP_FILE_TOO_LARGE, + MZ_ZIP_UNSUPPORTED_METHOD, + MZ_ZIP_UNSUPPORTED_ENCRYPTION, + MZ_ZIP_UNSUPPORTED_FEATURE, + MZ_ZIP_FAILED_FINDING_CENTRAL_DIR, + MZ_ZIP_NOT_AN_ARCHIVE, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED, + MZ_ZIP_UNSUPPORTED_MULTIDISK, + MZ_ZIP_DECOMPRESSION_FAILED, + MZ_ZIP_COMPRESSION_FAILED, + MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE, + MZ_ZIP_CRC_CHECK_FAILED, + MZ_ZIP_UNSUPPORTED_CDIR_SIZE, + MZ_ZIP_ALLOC_FAILED, + MZ_ZIP_FILE_OPEN_FAILED, + MZ_ZIP_FILE_CREATE_FAILED, + MZ_ZIP_FILE_WRITE_FAILED, + MZ_ZIP_FILE_READ_FAILED, + MZ_ZIP_FILE_CLOSE_FAILED, + MZ_ZIP_FILE_SEEK_FAILED, + MZ_ZIP_FILE_STAT_FAILED, + MZ_ZIP_INVALID_PARAMETER, + MZ_ZIP_INVALID_FILENAME, + MZ_ZIP_BUF_TOO_SMALL, + MZ_ZIP_INTERNAL_ERROR, + MZ_ZIP_FILE_NOT_FOUND, + MZ_ZIP_ARCHIVE_TOO_LARGE, + MZ_ZIP_VALIDATION_FAILED, + MZ_ZIP_WRITE_CALLBACK_FAILED, + MZ_ZIP_TOTAL_ERRORS +} mz_zip_error; + +typedef struct { + mz_uint64 m_archive_size; + mz_uint64 m_central_directory_file_ofs; + + /* We only support up to UINT32_MAX files in zip64 mode. */ + mz_uint32 m_total_files; + mz_zip_mode m_zip_mode; + mz_zip_type m_zip_type; + mz_zip_error m_last_error; + + mz_uint64 m_file_offset_alignment; + + mz_alloc_func m_pAlloc; + mz_free_func m_pFree; + mz_realloc_func m_pRealloc; + void *m_pAlloc_opaque; + + mz_file_read_func m_pRead; + mz_file_write_func m_pWrite; + mz_file_needs_keepalive m_pNeeds_keepalive; + void *m_pIO_opaque; + + mz_zip_internal_state *m_pState; + +} mz_zip_archive; + +typedef struct { + mz_zip_archive *pZip; + mz_uint flags; + + int status; + + mz_uint64 read_buf_size, read_buf_ofs, read_buf_avail, + comp_remaining, out_buf_ofs, cur_file_ofs; + mz_zip_archive_file_stat file_stat; + void *pRead_buf; + void *pWrite_buf; + + size_t out_blk_remain; + + tinfl_decompressor inflator; + +# ifdef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + mz_uint padding; +# else + mz_uint file_crc32; +# endif + +} mz_zip_reader_extract_iter_state; + +/* -------- ZIP reading */ + +/* Inits a ZIP archive reader. */ +/* These functions read and validate the archive's central directory. + */ +mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, + mz_uint flags); + +mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, + size_t size, mz_uint flags); + +# ifndef MINIZ_NO_STDIO +/* Read a archive from a disk file. */ +/* file_start_ofs is the file offset where the archive actually + * begins, or 0. */ +/* actual_archive_size is the true total size of the archive, which + * may be smaller than the file's actual size on disk. If zero the + * entire file is treated as the archive. */ +mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 flags); +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); + +/* Read an archive from an already opened FILE, beginning at the + * current file position. */ +/* The archive is assumed to be archive_size bytes long. If + * archive_size is 0, then the entire rest of the file is assumed to + * contain the archive. */ +/* The FILE will NOT be closed when mz_zip_reader_end() is called. */ +mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint64 archive_size, + mz_uint flags); +# endif + +/* Ends archive reading, freeing all allocations, and closing the + * input archive file if mz_zip_reader_init_file() was used. */ +mz_bool mz_zip_reader_end(mz_zip_archive *pZip); + +/* -------- ZIP reading or writing */ + +/* Clears a mz_zip_archive struct to all zeros. */ +/* Important: This must be done before passing the struct to any + * mz_zip functions. */ +void mz_zip_zero_struct(mz_zip_archive *pZip); + +mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip); +mz_zip_type mz_zip_get_type(mz_zip_archive *pZip); + +/* Returns the total number of files in the archive. */ +mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip); + +mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip); +mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip); +MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip); + +/* Reads n bytes of raw archive data, starting at file offset + * file_ofs, to pBuf. */ +size_t mz_zip_read_archive_data(mz_zip_archive *pZip, + mz_uint64 file_ofs, void *pBuf, + size_t n); + +/* All mz_zip funcs set the m_last_error field in the mz_zip_archive + * struct. These functions retrieve/manipulate this field. */ +/* Note that the m_last_error functionality is not thread safe. */ +mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, + mz_zip_error err_num); +mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip); +mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip); +mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip); +const char *mz_zip_get_error_string(mz_zip_error mz_err); + +/* MZ_TRUE if the archive file entry is a directory entry. */ +mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, + mz_uint file_index); + +/* MZ_TRUE if the file is encrypted/strong encrypted. */ +mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, + mz_uint file_index); + +/* MZ_TRUE if the compression method is supported, and the file is not + * encrypted, and the file is not a compressed patch file. */ +mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, + mz_uint file_index); + +/* Retrieves the filename of an archive file entry. */ +/* Returns the number of bytes written to pFilename, or if + * filename_buf_size is 0 this function returns the number of bytes + * needed to fully store the filename. */ +mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, + mz_uint file_index, + char *pFilename, + mz_uint filename_buf_size); + +/* Attempts to locates a file in the archive's central directory. */ +/* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */ +/* Returns -1 if the file cannot be found. */ +int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, + const char *pComment, mz_uint flags); +mz_bool mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, + const char *pName, + const char *pComment, + mz_uint flags, + mz_uint32 *file_index); + +/* Returns detailed information about an archive file entry. */ +mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, + mz_uint file_index, + mz_zip_archive_file_stat *pStat); + +/* MZ_TRUE if the file is in zip64 format. */ +/* A file is considered zip64 if it contained a zip64 end of central + * directory marker, or if it contained any zip64 extended file + * information fields in the central directory. */ +mz_bool mz_zip_is_zip64(mz_zip_archive *pZip); + +/* Returns the total central directory size in bytes. */ +/* The current max supported size is <= MZ_UINT32_MAX. */ +size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip); + +/* Extracts a archive file to a memory buffer using no memory + * allocation. */ +/* There must be at least enough room on the stack to store the + * inflator's state (~34KB or so). */ +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); +mz_bool mz_zip_reader_extract_file_to_mem_no_alloc( + mz_zip_archive *pZip, const char *pFilename, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size); + +/* Extracts a archive file to a memory buffer. */ +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); +mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, + const char *pFilename, + void *pBuf, size_t buf_size, + mz_uint flags); + +/* Extracts a archive file to a dynamically allocated heap buffer. */ +/* The memory will be allocated via the mz_zip_archive's alloc/realloc + * functions. */ +/* Returns NULL and sets the last error on failure. */ +void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, + mz_uint file_index, size_t *pSize, + mz_uint flags); +void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, + const char *pFilename, + size_t *pSize, + mz_uint flags); + +/* Extracts a archive file using a callback function to output the + * file's data. */ +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); +mz_bool mz_zip_reader_extract_file_to_callback( + mz_zip_archive *pZip, const char *pFilename, + mz_file_write_func pCallback, void *pOpaque, mz_uint flags); + +/* Extract a file iteratively */ +mz_zip_reader_extract_iter_state *mz_zip_reader_extract_iter_new( + mz_zip_archive *pZip, mz_uint file_index, mz_uint flags); +mz_zip_reader_extract_iter_state *mz_zip_reader_extract_file_iter_new( + mz_zip_archive *pZip, const char *pFilename, mz_uint flags); +size_t mz_zip_reader_extract_iter_read( + mz_zip_reader_extract_iter_state *pState, void *pvBuf, + size_t buf_size); +mz_bool mz_zip_reader_extract_iter_free( + mz_zip_reader_extract_iter_state *pState); + +# ifndef MINIZ_NO_STDIO +/* Extracts a archive file to a disk file and sets its last accessed + * and modified times. */ +/* This function only extracts files, not archive directory records. + */ +mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, + mz_uint file_index, + const char *pDst_filename, + mz_uint flags); +mz_bool mz_zip_reader_extract_file_to_file( + mz_zip_archive *pZip, const char *pArchive_filename, + const char *pDst_filename, mz_uint flags); + +/* Extracts a archive file starting at the current position in the + * destination FILE stream. */ +mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, + mz_uint file_index, + MZ_FILE *File, mz_uint flags); +mz_bool mz_zip_reader_extract_file_to_cfile( + mz_zip_archive *pZip, const char *pArchive_filename, + MZ_FILE *pFile, mz_uint flags); +# endif + +# if 0 +/* TODO */ + typedef void *mz_zip_streaming_extract_state_ptr; + mz_zip_streaming_extract_state_ptr mz_zip_streaming_extract_begin(mz_zip_archive *pZip, mz_uint file_index, mz_uint flags); + mz_uint64 mz_zip_streaming_extract_get_size(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); + mz_uint64 mz_zip_streaming_extract_get_cur_ofs(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); + mz_bool mz_zip_streaming_extract_seek(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, mz_uint64 new_ofs); + size_t mz_zip_streaming_extract_read(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState, void *pBuf, size_t buf_size); + mz_bool mz_zip_streaming_extract_end(mz_zip_archive *pZip, mz_zip_streaming_extract_state_ptr pState); +# endif + +/* This function compares the archive's local headers, the optional + * local zip64 extended information block, and the optional descriptor + * following the compressed data vs. the data in the central + * directory. */ +/* It also validates that each file can be successfully uncompressed + * unless the MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY is specified. */ +mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, + mz_uint flags); + +/* Validates an entire archive by calling mz_zip_validate_file() on + * each file. */ +mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags); + +/* Misc utils/helpers, valid for ZIP reading or writing */ +mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, + mz_uint flags, + mz_zip_error *pErr); +# ifndef MINIZ_NO_STDIO +mz_bool mz_zip_validate_file_archive(const char *pFilename, + mz_uint flags, + mz_zip_error *pErr); +# endif + +/* Universal end function - calls either mz_zip_reader_end() or + * mz_zip_writer_end(). */ +mz_bool mz_zip_end(mz_zip_archive *pZip); + +/* -------- ZIP writing */ + +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + +/* Inits a ZIP archive writer. */ +/*Set pZip->m_pWrite (and pZip->m_pIO_opaque) before calling + * mz_zip_writer_init or mz_zip_writer_init_v2*/ +/*The output is streamable, i.e. file_ofs in mz_file_write_func always + * increases only by n*/ +mz_bool mz_zip_writer_init(mz_zip_archive *pZip, + mz_uint64 existing_size); +mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, + mz_uint64 existing_size, mz_uint flags); + +mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, + size_t size_to_reserve_at_beginning, + size_t initial_allocation_size); +mz_bool mz_zip_writer_init_heap_v2( + mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, + size_t initial_allocation_size, mz_uint flags); + +# ifndef MINIZ_NO_STDIO +mz_bool mz_zip_writer_init_file( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning); +mz_bool mz_zip_writer_init_file_v2( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning, mz_uint flags); +mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint flags); +# endif + +/* Converts a ZIP archive reader object into a writer object, to allow + * efficient in-place file appends to occur on an existing archive. */ +/* For archives opened using mz_zip_reader_init_file, pFilename must + * be the archive's filename so it can be reopened for writing. If the + * file can't be reopened, mz_zip_reader_end() will be called. */ +/* For archives opened using mz_zip_reader_init_mem, the memory block + * must be growable using the realloc callback (which defaults to + * realloc unless you've overridden it). */ +/* Finally, for archives opened using mz_zip_reader_init, the + * mz_zip_archive's user provided m_pWrite function cannot be NULL. */ +/* Note: In-place archive modification is not recommended unless you + * know what you're doing, because if execution stops or something + * goes wrong before */ +/* the archive is finalized the file's central directory will be + * hosed. */ +mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, + const char *pFilename); +mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags); + +/* Adds the contents of a memory buffer to an archive. These functions + * record the current local time into the archive. */ +/* To add a directory entry, call this method with an archive name + * ending in a forwardslash with an empty buffer. */ +/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more + * mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */ +mz_bool mz_zip_writer_add_mem(mz_zip_archive *pZip, + const char *pArchive_name, + const void *pBuf, size_t buf_size, + mz_uint level_and_flags); + +/* Like mz_zip_writer_add_mem(), except you can specify a file comment + * field, and optionally supply the function with already compressed + * data. */ +/* uncomp_size/uncomp_crc32 are only used if the + * MZ_ZIP_FLAG_COMPRESSED_DATA flag is specified. */ +mz_bool mz_zip_writer_add_mem_ex( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32); + +mz_bool mz_zip_writer_add_mem_ex_v2( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32, MZ_TIME_T *last_modified, + const char *user_extra_data_local, + mz_uint user_extra_data_local_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len); + +/* Adds the contents of a file to an archive. This function also + * records the disk file's modified time into the archive. */ +/* File data is supplied via a read callback function. User + * mz_zip_writer_add_(c)file to add a file directly.*/ +mz_bool mz_zip_writer_add_read_buf_callback( + mz_zip_archive *pZip, const char *pArchive_name, + mz_file_read_func read_callback, void *callback_opaque, + mz_uint64 max_size, const MZ_TIME_T *pFile_time, + const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, const char *user_extra_data_local, + mz_uint user_extra_data_local_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len); + +# ifndef MINIZ_NO_STDIO +/* Adds the contents of a disk file to an archive. This function also + * records the disk file's modified time into the archive. */ +/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more + * mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */ +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); + +/* Like mz_zip_writer_add_file(), except the file data is read from + * the specified FILE stream. */ +mz_bool mz_zip_writer_add_cfile( + mz_zip_archive *pZip, const char *pArchive_name, + MZ_FILE *pSrc_file, mz_uint64 max_size, + const MZ_TIME_T *pFile_time, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, + const char *user_extra_data_local, + mz_uint user_extra_data_local_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len); +# endif + +/* Adds a file to an archive by fully cloning the data from another + * archive. */ +/* This function fully clones the source file's compressed data (no + * recompression), along with its full filename, extra data (it may + * add or modify the zip64 local header extra data field), and the + * optional descriptor following the compressed data. */ +mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, + mz_zip_archive *pSource_zip, + mz_uint src_file_index); + +/* Finalizes the archive by writing the central directory records + * followed by the end of central directory record. */ +/* After an archive is finalized, the only valid call on the + * mz_zip_archive struct is mz_zip_writer_end(). */ +/* An archive must be manually finalized by calling this function for + * it to be valid. */ +mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip); + +/* Finalizes a heap archive, returning a pointer to the heap block and + * its size. */ +/* The heap block will be allocated using the mz_zip_archive's + * alloc/realloc callbacks. */ +mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, + void **ppBuf, + size_t *pSize); + +/* Ends archive writing, freeing all allocations, and closing the + * output file if mz_zip_writer_init_file() was used. */ +/* Note for the archive to be valid, it *must* have been finalized + * before ending (this function will not do it for you). */ +mz_bool mz_zip_writer_end(mz_zip_archive *pZip); + +/* -------- Misc. high-level helper functions: */ + +/* mz_zip_add_mem_to_archive_file_in_place() efficiently (but not + * atomically) appends a memory blob to a ZIP archive. */ +/* Note this is NOT a fully safe operation. If it crashes or dies in + * some way your archive can be left in a screwed up state (without a + * central directory). */ +/* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, + * MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more + * mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */ +/* TODO: Perhaps add an option to leave the existing central dir in + * place in case the add dies? We could then truncate the file (so the + * old central dir would be at the end) if something goes wrong. */ +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); +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); + +# ifndef MINIZ_NO_STDIO +/* Reads a single file from an archive into a heap block. */ +/* If pComment is not NULL, only the file with the specified comment + * will be extracted. */ +/* Returns NULL on failure. */ +void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, + const char *pArchive_name, + size_t *pSize, + mz_uint flags); +void *mz_zip_extract_archive_file_to_heap_v2( + const char *pZip_filename, const char *pArchive_name, + const char *pComment, size_t *pSize, mz_uint flags, + mz_zip_error *pErr); +# endif + +# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */ + +# ifdef __cplusplus +} +# endif + +#endif /* MINIZ_NO_ARCHIVE_APIS */ + +#endif |