| /* |
| * Copyright (c) 2016-2020, Przemyslaw Skibinski, Yann Collet, Facebook, Inc. |
| * All rights reserved. |
| * |
| * This source code is licensed under both the BSD-style license (found in the |
| * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| * in the COPYING file in the root directory of this source tree). |
| * You may select, at your option, one of the above-listed licenses. |
| */ |
| |
| |
| /* === Tuning parameters === */ |
| #ifndef ZWRAP_USE_ZSTD |
| #define ZWRAP_USE_ZSTD 0 |
| #endif |
| |
| |
| /* === Dependencies === */ |
| #include <stdlib.h> |
| #include <stdio.h> /* vsprintf */ |
| #include <stdarg.h> /* va_list, for z_gzprintf */ |
| #define NO_DUMMY_DECL |
| #define ZLIB_CONST |
| #include <zlib.h> /* without #define Z_PREFIX */ |
| #include "zstd_zlibwrapper.h" |
| #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_isFrame, ZSTD_MAGICNUMBER */ |
| #include "zstd.h" |
| #include "zstd_internal.h" /* ZSTD_malloc, ZSTD_free */ |
| |
| |
| /* === Constants === */ |
| #define Z_INFLATE_SYNC 8 |
| #define ZLIB_HEADERSIZE 4 |
| #define ZSTD_HEADERSIZE ZSTD_FRAMEHEADERSIZE_MIN(ZSTD_f_zstd1) |
| #define ZWRAP_DEFAULT_CLEVEL 3 /* Z_DEFAULT_COMPRESSION is translated to ZWRAP_DEFAULT_CLEVEL for zstd */ |
| |
| |
| /* === Debug === */ |
| #define LOG_WRAPPERC(...) /* fprintf(stderr, __VA_ARGS__) */ |
| #define LOG_WRAPPERD(...) /* fprintf(stderr, __VA_ARGS__) */ |
| |
| #define FINISH_WITH_GZ_ERR(msg) { (void)msg; return Z_STREAM_ERROR; } |
| #define FINISH_WITH_NULL_ERR(msg) { (void)msg; return NULL; } |
| |
| |
| /* === Wrapper === */ |
| static int g_ZWRAP_useZSTDcompression = ZWRAP_USE_ZSTD; /* 0 = don't use ZSTD */ |
| |
| void ZWRAP_useZSTDcompression(int turn_on) { g_ZWRAP_useZSTDcompression = turn_on; } |
| |
| int ZWRAP_isUsingZSTDcompression(void) { return g_ZWRAP_useZSTDcompression; } |
| |
| |
| |
| static ZWRAP_decompress_type g_ZWRAPdecompressionType = ZWRAP_AUTO; |
| |
| void ZWRAP_setDecompressionType(ZWRAP_decompress_type type) { g_ZWRAPdecompressionType = type; } |
| |
| ZWRAP_decompress_type ZWRAP_getDecompressionType(void) { return g_ZWRAPdecompressionType; } |
| |
| |
| |
| const char * zstdVersion(void) { return ZSTD_VERSION_STRING; } |
| |
| ZEXTERN const char * ZEXPORT z_zlibVersion OF((void)) { return zlibVersion(); } |
| |
| |
| |
| static void* ZWRAP_allocFunction(void* opaque, size_t size) |
| { |
| z_streamp strm = (z_streamp) opaque; |
| void* address = strm->zalloc(strm->opaque, 1, (uInt)size); |
| /* LOG_WRAPPERC("ZWRAP alloc %p, %d \n", address, (int)size); */ |
| return address; |
| } |
| |
| static void ZWRAP_freeFunction(void* opaque, void* address) |
| { |
| z_streamp strm = (z_streamp) opaque; |
| strm->zfree(strm->opaque, address); |
| /* if (address) LOG_WRAPPERC("ZWRAP free %p \n", address); */ |
| } |
| |
| |
| |
| /* === Compression === */ |
| typedef enum { ZWRAP_useInit, ZWRAP_useReset, ZWRAP_streamEnd } ZWRAP_state_t; |
| |
| typedef struct { |
| ZSTD_CStream* zbc; |
| int compressionLevel; |
| int streamEnd; /* a flag to signal the end of a stream */ |
| unsigned long long totalInBytes; /* we need it as strm->total_in can be reset by user */ |
| ZSTD_customMem customMem; |
| z_stream allocFunc; /* copy of zalloc, zfree, opaque */ |
| ZSTD_inBuffer inBuffer; |
| ZSTD_outBuffer outBuffer; |
| ZWRAP_state_t comprState; |
| unsigned long long pledgedSrcSize; |
| } ZWRAP_CCtx; |
| |
| /* typedef ZWRAP_CCtx internal_state; */ |
| |
| |
| |
| static size_t ZWRAP_freeCCtx(ZWRAP_CCtx* zwc) |
| { |
| if (zwc==NULL) return 0; /* support free on NULL */ |
| ZSTD_freeCStream(zwc->zbc); |
| ZSTD_free(zwc, zwc->customMem); |
| return 0; |
| } |
| |
| |
| static ZWRAP_CCtx* ZWRAP_createCCtx(z_streamp strm) |
| { |
| ZWRAP_CCtx* zwc; |
| |
| if (strm->zalloc && strm->zfree) { |
| zwc = (ZWRAP_CCtx*)strm->zalloc(strm->opaque, 1, sizeof(ZWRAP_CCtx)); |
| if (zwc==NULL) return NULL; |
| memset(zwc, 0, sizeof(ZWRAP_CCtx)); |
| memcpy(&zwc->allocFunc, strm, sizeof(z_stream)); |
| { ZSTD_customMem ZWRAP_customMem = { ZWRAP_allocFunction, ZWRAP_freeFunction, NULL }; |
| ZWRAP_customMem.opaque = &zwc->allocFunc; |
| zwc->customMem = ZWRAP_customMem; |
| } |
| } else { |
| zwc = (ZWRAP_CCtx*)calloc(1, sizeof(*zwc)); |
| if (zwc==NULL) return NULL; |
| } |
| |
| return zwc; |
| } |
| |
| |
| static int ZWRAP_initializeCStream(ZWRAP_CCtx* zwc, const void* dict, size_t dictSize, unsigned long long pledgedSrcSize) |
| { |
| LOG_WRAPPERC("- ZWRAP_initializeCStream=%p\n", zwc); |
| if (zwc == NULL || zwc->zbc == NULL) return Z_STREAM_ERROR; |
| |
| if (!pledgedSrcSize) pledgedSrcSize = zwc->pledgedSrcSize; |
| { ZSTD_parameters const params = ZSTD_getParams(zwc->compressionLevel, pledgedSrcSize, dictSize); |
| size_t initErr; |
| LOG_WRAPPERC("pledgedSrcSize=%d windowLog=%d chainLog=%d hashLog=%d searchLog=%d minMatch=%d strategy=%d\n", |
| (int)pledgedSrcSize, params.cParams.windowLog, params.cParams.chainLog, params.cParams.hashLog, params.cParams.searchLog, params.cParams.minMatch, params.cParams.strategy); |
| initErr = ZSTD_initCStream_advanced(zwc->zbc, dict, dictSize, params, pledgedSrcSize); |
| if (ZSTD_isError(initErr)) return Z_STREAM_ERROR; |
| } |
| |
| return Z_OK; |
| } |
| |
| |
| static int ZWRAPC_finishWithError(ZWRAP_CCtx* zwc, z_streamp strm, int error) |
| { |
| LOG_WRAPPERC("- ZWRAPC_finishWithError=%d\n", error); |
| if (zwc) ZWRAP_freeCCtx(zwc); |
| if (strm) strm->state = NULL; |
| return (error) ? error : Z_STREAM_ERROR; |
| } |
| |
| |
| static int ZWRAPC_finishWithErrorMsg(z_streamp strm, char* message) |
| { |
| ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state; |
| strm->msg = message; |
| if (zwc == NULL) return Z_STREAM_ERROR; |
| |
| return ZWRAPC_finishWithError(zwc, strm, 0); |
| } |
| |
| |
| int ZWRAP_setPledgedSrcSize(z_streamp strm, unsigned long long pledgedSrcSize) |
| { |
| ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state; |
| if (zwc == NULL) return Z_STREAM_ERROR; |
| |
| zwc->pledgedSrcSize = pledgedSrcSize; |
| zwc->comprState = ZWRAP_useInit; |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateInit_ OF((z_streamp strm, int level, |
| const char *version, int stream_size)) |
| { |
| ZWRAP_CCtx* zwc; |
| |
| LOG_WRAPPERC("- deflateInit level=%d\n", level); |
| if (!g_ZWRAP_useZSTDcompression) { |
| return deflateInit_((strm), (level), version, stream_size); |
| } |
| |
| zwc = ZWRAP_createCCtx(strm); |
| if (zwc == NULL) return Z_MEM_ERROR; |
| |
| if (level == Z_DEFAULT_COMPRESSION) |
| level = ZWRAP_DEFAULT_CLEVEL; |
| |
| zwc->streamEnd = 0; |
| zwc->totalInBytes = 0; |
| zwc->compressionLevel = level; |
| strm->state = (struct internal_state*) zwc; /* use state which in not used by user */ |
| strm->total_in = 0; |
| strm->total_out = 0; |
| strm->adler = 0; |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateInit2_ OF((z_streamp strm, int level, int method, |
| int windowBits, int memLevel, |
| int strategy, const char *version, |
| int stream_size)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateInit2_(strm, level, method, windowBits, memLevel, strategy, version, stream_size); |
| |
| return z_deflateInit_ (strm, level, version, stream_size); |
| } |
| |
| |
| int ZWRAP_deflateReset_keepDict(z_streamp strm) |
| { |
| LOG_WRAPPERC("- ZWRAP_deflateReset_keepDict\n"); |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateReset(strm); |
| |
| { ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state; |
| if (zwc) { |
| zwc->streamEnd = 0; |
| zwc->totalInBytes = 0; |
| } |
| } |
| |
| strm->total_in = 0; |
| strm->total_out = 0; |
| strm->adler = 0; |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateReset OF((z_streamp strm)) |
| { |
| LOG_WRAPPERC("- deflateReset\n"); |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateReset(strm); |
| |
| ZWRAP_deflateReset_keepDict(strm); |
| |
| { ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state; |
| if (zwc) zwc->comprState = ZWRAP_useInit; |
| } |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateSetDictionary OF((z_streamp strm, |
| const Bytef *dictionary, |
| uInt dictLength)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) { |
| LOG_WRAPPERC("- deflateSetDictionary\n"); |
| return deflateSetDictionary(strm, dictionary, dictLength); |
| } |
| |
| { ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state; |
| LOG_WRAPPERC("- deflateSetDictionary level=%d\n", (int)zwc->compressionLevel); |
| if (!zwc) return Z_STREAM_ERROR; |
| if (zwc->zbc == NULL) { |
| zwc->zbc = ZSTD_createCStream_advanced(zwc->customMem); |
| if (zwc->zbc == NULL) return ZWRAPC_finishWithError(zwc, strm, 0); |
| } |
| { int res = ZWRAP_initializeCStream(zwc, dictionary, dictLength, ZSTD_CONTENTSIZE_UNKNOWN); |
| if (res != Z_OK) return ZWRAPC_finishWithError(zwc, strm, res); } |
| zwc->comprState = ZWRAP_useReset; |
| } |
| |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflate OF((z_streamp strm, int flush)) |
| { |
| ZWRAP_CCtx* zwc; |
| |
| if (!g_ZWRAP_useZSTDcompression) { |
| LOG_WRAPPERC("- deflate1 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d\n", |
| (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out); |
| return deflate(strm, flush); |
| } |
| |
| zwc = (ZWRAP_CCtx*) strm->state; |
| if (zwc == NULL) { LOG_WRAPPERC("zwc == NULL\n"); return Z_STREAM_ERROR; } |
| |
| if (zwc->zbc == NULL) { |
| zwc->zbc = ZSTD_createCStream_advanced(zwc->customMem); |
| if (zwc->zbc == NULL) return ZWRAPC_finishWithError(zwc, strm, 0); |
| { int const initErr = ZWRAP_initializeCStream(zwc, NULL, 0, (flush == Z_FINISH) ? strm->avail_in : ZSTD_CONTENTSIZE_UNKNOWN); |
| if (initErr != Z_OK) return ZWRAPC_finishWithError(zwc, strm, initErr); } |
| if (flush != Z_FINISH) zwc->comprState = ZWRAP_useReset; |
| } else { |
| if (zwc->totalInBytes == 0) { |
| if (zwc->comprState == ZWRAP_useReset) { |
| size_t const resetErr = ZSTD_resetCStream(zwc->zbc, (flush == Z_FINISH) ? strm->avail_in : zwc->pledgedSrcSize); |
| if (ZSTD_isError(resetErr)) { |
| LOG_WRAPPERC("ERROR: ZSTD_resetCStream errorCode=%s\n", |
| ZSTD_getErrorName(resetErr)); |
| return ZWRAPC_finishWithError(zwc, strm, 0); |
| } |
| } else { |
| int const res = ZWRAP_initializeCStream(zwc, NULL, 0, (flush == Z_FINISH) ? strm->avail_in : ZSTD_CONTENTSIZE_UNKNOWN); |
| if (res != Z_OK) return ZWRAPC_finishWithError(zwc, strm, res); |
| if (flush != Z_FINISH) zwc->comprState = ZWRAP_useReset; |
| } |
| } /* (zwc->totalInBytes == 0) */ |
| } /* ! (zwc->zbc == NULL) */ |
| |
| LOG_WRAPPERC("- deflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out); |
| if (strm->avail_in > 0) { |
| zwc->inBuffer.src = strm->next_in; |
| zwc->inBuffer.size = strm->avail_in; |
| zwc->inBuffer.pos = 0; |
| zwc->outBuffer.dst = strm->next_out; |
| zwc->outBuffer.size = strm->avail_out; |
| zwc->outBuffer.pos = 0; |
| { size_t const cErr = ZSTD_compressStream(zwc->zbc, &zwc->outBuffer, &zwc->inBuffer); |
| LOG_WRAPPERC("deflate ZSTD_compressStream srcSize=%d dstCapacity=%d\n", (int)zwc->inBuffer.size, (int)zwc->outBuffer.size); |
| if (ZSTD_isError(cErr)) return ZWRAPC_finishWithError(zwc, strm, 0); |
| } |
| strm->next_out += zwc->outBuffer.pos; |
| strm->total_out += zwc->outBuffer.pos; |
| strm->avail_out -= zwc->outBuffer.pos; |
| strm->total_in += zwc->inBuffer.pos; |
| zwc->totalInBytes += zwc->inBuffer.pos; |
| strm->next_in += zwc->inBuffer.pos; |
| strm->avail_in -= zwc->inBuffer.pos; |
| } |
| |
| if (flush == Z_FULL_FLUSH |
| #if ZLIB_VERNUM >= 0x1240 |
| || flush == Z_TREES |
| #endif |
| || flush == Z_BLOCK) |
| return ZWRAPC_finishWithErrorMsg(strm, "Z_FULL_FLUSH, Z_BLOCK and Z_TREES are not supported!"); |
| |
| if (flush == Z_FINISH) { |
| size_t bytesLeft; |
| if (zwc->streamEnd) return Z_STREAM_END; |
| zwc->outBuffer.dst = strm->next_out; |
| zwc->outBuffer.size = strm->avail_out; |
| zwc->outBuffer.pos = 0; |
| bytesLeft = ZSTD_endStream(zwc->zbc, &zwc->outBuffer); |
| LOG_WRAPPERC("deflate ZSTD_endStream dstCapacity=%d bytesLeft=%d\n", (int)strm->avail_out, (int)bytesLeft); |
| if (ZSTD_isError(bytesLeft)) return ZWRAPC_finishWithError(zwc, strm, 0); |
| strm->next_out += zwc->outBuffer.pos; |
| strm->total_out += zwc->outBuffer.pos; |
| strm->avail_out -= zwc->outBuffer.pos; |
| if (bytesLeft == 0) { |
| zwc->streamEnd = 1; |
| LOG_WRAPPERC("Z_STREAM_END2 strm->total_in=%d strm->avail_out=%d strm->total_out=%d\n", |
| (int)strm->total_in, (int)strm->avail_out, (int)strm->total_out); |
| return Z_STREAM_END; |
| } } |
| else |
| if (flush == Z_SYNC_FLUSH || flush == Z_PARTIAL_FLUSH) { |
| size_t bytesLeft; |
| zwc->outBuffer.dst = strm->next_out; |
| zwc->outBuffer.size = strm->avail_out; |
| zwc->outBuffer.pos = 0; |
| bytesLeft = ZSTD_flushStream(zwc->zbc, &zwc->outBuffer); |
| LOG_WRAPPERC("deflate ZSTD_flushStream dstCapacity=%d bytesLeft=%d\n", (int)strm->avail_out, (int)bytesLeft); |
| if (ZSTD_isError(bytesLeft)) return ZWRAPC_finishWithError(zwc, strm, 0); |
| strm->next_out += zwc->outBuffer.pos; |
| strm->total_out += zwc->outBuffer.pos; |
| strm->avail_out -= zwc->outBuffer.pos; |
| } |
| LOG_WRAPPERC("- deflate3 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d\n", (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out); |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateEnd OF((z_streamp strm)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) { |
| LOG_WRAPPERC("- deflateEnd\n"); |
| return deflateEnd(strm); |
| } |
| LOG_WRAPPERC("- deflateEnd total_in=%d total_out=%d\n", (int)(strm->total_in), (int)(strm->total_out)); |
| { size_t errorCode; |
| ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state; |
| if (zwc == NULL) return Z_OK; /* structures are already freed */ |
| strm->state = NULL; |
| errorCode = ZWRAP_freeCCtx(zwc); |
| if (ZSTD_isError(errorCode)) return Z_STREAM_ERROR; |
| } |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN uLong ZEXPORT z_deflateBound OF((z_streamp strm, |
| uLong sourceLen)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateBound(strm, sourceLen); |
| |
| return ZSTD_compressBound(sourceLen); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateParams OF((z_streamp strm, |
| int level, |
| int strategy)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) { |
| LOG_WRAPPERC("- deflateParams level=%d strategy=%d\n", level, strategy); |
| return deflateParams(strm, level, strategy); |
| } |
| |
| return Z_OK; |
| } |
| |
| |
| |
| |
| |
| /* === Decompression === */ |
| |
| typedef enum { ZWRAP_ZLIB_STREAM, ZWRAP_ZSTD_STREAM, ZWRAP_UNKNOWN_STREAM } ZWRAP_stream_type; |
| |
| typedef struct { |
| ZSTD_DStream* zbd; |
| char headerBuf[16]; /* must be >= ZSTD_frameHeaderSize_min */ |
| int errorCount; |
| unsigned long long totalInBytes; /* we need it as strm->total_in can be reset by user */ |
| ZWRAP_state_t decompState; |
| ZSTD_inBuffer inBuffer; |
| ZSTD_outBuffer outBuffer; |
| |
| /* zlib params */ |
| int stream_size; |
| char *version; |
| int windowBits; |
| ZSTD_customMem customMem; |
| z_stream allocFunc; /* just to copy zalloc, zfree, opaque */ |
| } ZWRAP_DCtx; |
| |
| |
| static void ZWRAP_initDCtx(ZWRAP_DCtx* zwd) |
| { |
| zwd->errorCount = 0; |
| zwd->outBuffer.pos = 0; |
| zwd->outBuffer.size = 0; |
| } |
| |
| static ZWRAP_DCtx* ZWRAP_createDCtx(z_streamp strm) |
| { |
| ZWRAP_DCtx* zwd; |
| MEM_STATIC_ASSERT(sizeof(zwd->headerBuf) >= ZSTD_HEADERSIZE); /* check static buffer size condition */ |
| |
| if (strm->zalloc && strm->zfree) { |
| zwd = (ZWRAP_DCtx*)strm->zalloc(strm->opaque, 1, sizeof(ZWRAP_DCtx)); |
| if (zwd==NULL) return NULL; |
| memset(zwd, 0, sizeof(ZWRAP_DCtx)); |
| zwd->allocFunc = *strm; /* just to copy zalloc, zfree & opaque */ |
| { ZSTD_customMem ZWRAP_customMem = { ZWRAP_allocFunction, ZWRAP_freeFunction, NULL }; |
| ZWRAP_customMem.opaque = &zwd->allocFunc; |
| zwd->customMem = ZWRAP_customMem; |
| } |
| } else { |
| zwd = (ZWRAP_DCtx*)calloc(1, sizeof(*zwd)); |
| if (zwd==NULL) return NULL; |
| } |
| |
| ZWRAP_initDCtx(zwd); |
| return zwd; |
| } |
| |
| static size_t ZWRAP_freeDCtx(ZWRAP_DCtx* zwd) |
| { |
| if (zwd==NULL) return 0; /* support free on null */ |
| ZSTD_freeDStream(zwd->zbd); |
| ZSTD_free(zwd->version, zwd->customMem); |
| ZSTD_free(zwd, zwd->customMem); |
| return 0; |
| } |
| |
| |
| int ZWRAP_isUsingZSTDdecompression(z_streamp strm) |
| { |
| if (strm == NULL) return 0; |
| return (strm->reserved == ZWRAP_ZSTD_STREAM); |
| } |
| |
| |
| static int ZWRAPD_finishWithError(ZWRAP_DCtx* zwd, z_streamp strm, int error) |
| { |
| LOG_WRAPPERD("- ZWRAPD_finishWithError=%d\n", error); |
| ZWRAP_freeDCtx(zwd); |
| strm->state = NULL; |
| return (error) ? error : Z_STREAM_ERROR; |
| } |
| |
| static int ZWRAPD_finishWithErrorMsg(z_streamp strm, char* message) |
| { |
| ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*) strm->state; |
| strm->msg = message; |
| if (zwd == NULL) return Z_STREAM_ERROR; |
| |
| return ZWRAPD_finishWithError(zwd, strm, 0); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateInit_ OF((z_streamp strm, |
| const char* version, int stream_size)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB) { |
| strm->reserved = ZWRAP_ZLIB_STREAM; |
| return inflateInit(strm); |
| } |
| |
| { ZWRAP_DCtx* const zwd = ZWRAP_createDCtx(strm); |
| LOG_WRAPPERD("- inflateInit\n"); |
| if (zwd == NULL) return ZWRAPD_finishWithError(zwd, strm, 0); |
| |
| zwd->version = (char*)ZSTD_malloc(strlen(version)+1, zwd->customMem); |
| if (zwd->version == NULL) return ZWRAPD_finishWithError(zwd, strm, 0); |
| strcpy(zwd->version, version); |
| |
| zwd->stream_size = stream_size; |
| zwd->totalInBytes = 0; |
| strm->state = (struct internal_state*) zwd; |
| strm->total_in = 0; |
| strm->total_out = 0; |
| strm->reserved = ZWRAP_UNKNOWN_STREAM; |
| strm->adler = 0; |
| } |
| |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateInit2_ OF((z_streamp strm, int windowBits, |
| const char *version, int stream_size)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB) { |
| return inflateInit2_(strm, windowBits, version, stream_size); |
| } |
| |
| { int const ret = z_inflateInit_ (strm, version, stream_size); |
| LOG_WRAPPERD("- inflateInit2 windowBits=%d\n", windowBits); |
| if (ret == Z_OK) { |
| ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*)strm->state; |
| if (zwd == NULL) return Z_STREAM_ERROR; |
| zwd->windowBits = windowBits; |
| } |
| return ret; |
| } |
| } |
| |
| int ZWRAP_inflateReset_keepDict(z_streamp strm) |
| { |
| LOG_WRAPPERD("- ZWRAP_inflateReset_keepDict\n"); |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateReset(strm); |
| |
| { ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*) strm->state; |
| if (zwd == NULL) return Z_STREAM_ERROR; |
| ZWRAP_initDCtx(zwd); |
| zwd->decompState = ZWRAP_useReset; |
| zwd->totalInBytes = 0; |
| } |
| |
| strm->total_in = 0; |
| strm->total_out = 0; |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateReset OF((z_streamp strm)) |
| { |
| LOG_WRAPPERD("- inflateReset\n"); |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateReset(strm); |
| |
| { int const ret = ZWRAP_inflateReset_keepDict(strm); |
| if (ret != Z_OK) return ret; } |
| |
| { ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*) strm->state; |
| if (zwd == NULL) return Z_STREAM_ERROR; |
| zwd->decompState = ZWRAP_useInit; } |
| |
| return Z_OK; |
| } |
| |
| |
| #if ZLIB_VERNUM >= 0x1240 |
| ZEXTERN int ZEXPORT z_inflateReset2 OF((z_streamp strm, |
| int windowBits)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateReset2(strm, windowBits); |
| |
| { int const ret = z_inflateReset (strm); |
| if (ret == Z_OK) { |
| ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*)strm->state; |
| if (zwd == NULL) return Z_STREAM_ERROR; |
| zwd->windowBits = windowBits; |
| } |
| return ret; |
| } |
| } |
| #endif |
| |
| |
| ZEXTERN int ZEXPORT z_inflateSetDictionary OF((z_streamp strm, |
| const Bytef *dictionary, |
| uInt dictLength)) |
| { |
| LOG_WRAPPERD("- inflateSetDictionary\n"); |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateSetDictionary(strm, dictionary, dictLength); |
| |
| { ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*) strm->state; |
| if (zwd == NULL || zwd->zbd == NULL) return Z_STREAM_ERROR; |
| { size_t const initErr = ZSTD_initDStream_usingDict(zwd->zbd, dictionary, dictLength); |
| if (ZSTD_isError(initErr)) return ZWRAPD_finishWithError(zwd, strm, 0); } |
| zwd->decompState = ZWRAP_useReset; |
| |
| if (zwd->totalInBytes == ZSTD_HEADERSIZE) { |
| zwd->inBuffer.src = zwd->headerBuf; |
| zwd->inBuffer.size = zwd->totalInBytes; |
| zwd->inBuffer.pos = 0; |
| zwd->outBuffer.dst = strm->next_out; |
| zwd->outBuffer.size = 0; |
| zwd->outBuffer.pos = 0; |
| { size_t const errorCode = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer); |
| LOG_WRAPPERD("inflateSetDictionary ZSTD_decompressStream errorCode=%d srcSize=%d dstCapacity=%d\n", |
| (int)errorCode, (int)zwd->inBuffer.size, (int)zwd->outBuffer.size); |
| if (zwd->inBuffer.pos < zwd->outBuffer.size || ZSTD_isError(errorCode)) { |
| LOG_WRAPPERD("ERROR: ZSTD_decompressStream %s\n", |
| ZSTD_getErrorName(errorCode)); |
| return ZWRAPD_finishWithError(zwd, strm, 0); |
| } } } } |
| |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflate OF((z_streamp strm, int flush)) |
| { |
| ZWRAP_DCtx* zwd; |
| |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) { |
| int const result = inflate(strm, flush); |
| LOG_WRAPPERD("- inflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", |
| (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, result); |
| return result; |
| } |
| |
| if (strm->avail_in <= 0) return Z_OK; |
| |
| zwd = (ZWRAP_DCtx*) strm->state; |
| LOG_WRAPPERD("- inflate1 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d\n", |
| (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out); |
| |
| if (zwd == NULL) return Z_STREAM_ERROR; |
| if (zwd->decompState == ZWRAP_streamEnd) return Z_STREAM_END; |
| |
| if (zwd->totalInBytes < ZLIB_HEADERSIZE) { |
| if (zwd->totalInBytes == 0 && strm->avail_in >= ZLIB_HEADERSIZE) { |
| if (MEM_readLE32(strm->next_in) != ZSTD_MAGICNUMBER) { |
| { int const initErr = (zwd->windowBits) ? |
| inflateInit2_(strm, zwd->windowBits, zwd->version, zwd->stream_size) : |
| inflateInit_(strm, zwd->version, zwd->stream_size); |
| LOG_WRAPPERD("ZLIB inflateInit errorCode=%d\n", initErr); |
| if (initErr != Z_OK) return ZWRAPD_finishWithError(zwd, strm, initErr); |
| } |
| |
| strm->reserved = ZWRAP_ZLIB_STREAM; |
| { size_t const freeErr = ZWRAP_freeDCtx(zwd); |
| if (ZSTD_isError(freeErr)) goto error; } |
| |
| { int const result = (flush == Z_INFLATE_SYNC) ? |
| inflateSync(strm) : |
| inflate(strm, flush); |
| LOG_WRAPPERD("- inflate3 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", |
| (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, res); |
| return result; |
| } } |
| } else { /* ! (zwd->totalInBytes == 0 && strm->avail_in >= ZLIB_HEADERSIZE) */ |
| size_t const srcSize = MIN(strm->avail_in, ZLIB_HEADERSIZE - zwd->totalInBytes); |
| memcpy(zwd->headerBuf+zwd->totalInBytes, strm->next_in, srcSize); |
| strm->total_in += srcSize; |
| zwd->totalInBytes += srcSize; |
| strm->next_in += srcSize; |
| strm->avail_in -= srcSize; |
| if (zwd->totalInBytes < ZLIB_HEADERSIZE) return Z_OK; |
| |
| if (MEM_readLE32(zwd->headerBuf) != ZSTD_MAGICNUMBER) { |
| z_stream strm2; |
| strm2.next_in = strm->next_in; |
| strm2.avail_in = strm->avail_in; |
| strm2.next_out = strm->next_out; |
| strm2.avail_out = strm->avail_out; |
| |
| { int const initErr = (zwd->windowBits) ? |
| inflateInit2_(strm, zwd->windowBits, zwd->version, zwd->stream_size) : |
| inflateInit_(strm, zwd->version, zwd->stream_size); |
| LOG_WRAPPERD("ZLIB inflateInit errorCode=%d\n", initErr); |
| if (initErr != Z_OK) return ZWRAPD_finishWithError(zwd, strm, initErr); |
| } |
| |
| /* inflate header */ |
| strm->next_in = (unsigned char*)zwd->headerBuf; |
| strm->avail_in = ZLIB_HEADERSIZE; |
| strm->avail_out = 0; |
| { int const dErr = inflate(strm, Z_NO_FLUSH); |
| LOG_WRAPPERD("ZLIB inflate errorCode=%d strm->avail_in=%d\n", |
| dErr, (int)strm->avail_in); |
| if (dErr != Z_OK) |
| return ZWRAPD_finishWithError(zwd, strm, dErr); |
| } |
| if (strm->avail_in > 0) goto error; |
| |
| strm->next_in = strm2.next_in; |
| strm->avail_in = strm2.avail_in; |
| strm->next_out = strm2.next_out; |
| strm->avail_out = strm2.avail_out; |
| |
| strm->reserved = ZWRAP_ZLIB_STREAM; /* mark as zlib stream */ |
| { size_t const freeErr = ZWRAP_freeDCtx(zwd); |
| if (ZSTD_isError(freeErr)) goto error; } |
| |
| { int const result = (flush == Z_INFLATE_SYNC) ? |
| inflateSync(strm) : |
| inflate(strm, flush); |
| LOG_WRAPPERD("- inflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", |
| (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, res); |
| return result; |
| } } } /* if ! (zwd->totalInBytes == 0 && strm->avail_in >= ZLIB_HEADERSIZE) */ |
| } /* (zwd->totalInBytes < ZLIB_HEADERSIZE) */ |
| |
| strm->reserved = ZWRAP_ZSTD_STREAM; /* mark as zstd steam */ |
| |
| if (flush == Z_INFLATE_SYNC) { strm->msg = "inflateSync is not supported!"; goto error; } |
| |
| if (!zwd->zbd) { |
| zwd->zbd = ZSTD_createDStream_advanced(zwd->customMem); |
| if (zwd->zbd == NULL) { LOG_WRAPPERD("ERROR: ZSTD_createDStream_advanced\n"); goto error; } |
| zwd->decompState = ZWRAP_useInit; |
| } |
| |
| if (zwd->totalInBytes < ZSTD_HEADERSIZE) { |
| if (zwd->totalInBytes == 0 && strm->avail_in >= ZSTD_HEADERSIZE) { |
| if (zwd->decompState == ZWRAP_useInit) { |
| size_t const initErr = ZSTD_initDStream(zwd->zbd); |
| if (ZSTD_isError(initErr)) { |
| LOG_WRAPPERD("ERROR: ZSTD_initDStream errorCode=%s\n", |
| ZSTD_getErrorName(initErr)); |
| goto error; |
| } |
| } else { |
| size_t const resetErr = ZSTD_resetDStream(zwd->zbd); |
| if (ZSTD_isError(resetErr)) goto error; |
| } |
| } else { |
| size_t const srcSize = MIN(strm->avail_in, ZSTD_HEADERSIZE - zwd->totalInBytes); |
| memcpy(zwd->headerBuf+zwd->totalInBytes, strm->next_in, srcSize); |
| strm->total_in += srcSize; |
| zwd->totalInBytes += srcSize; |
| strm->next_in += srcSize; |
| strm->avail_in -= srcSize; |
| if (zwd->totalInBytes < ZSTD_HEADERSIZE) return Z_OK; |
| |
| if (zwd->decompState == ZWRAP_useInit) { |
| size_t const initErr = ZSTD_initDStream(zwd->zbd); |
| if (ZSTD_isError(initErr)) { |
| LOG_WRAPPERD("ERROR: ZSTD_initDStream errorCode=%s\n", |
| ZSTD_getErrorName(initErr)); |
| goto error; |
| } |
| } else { |
| size_t const resetErr = ZSTD_resetDStream(zwd->zbd); |
| if (ZSTD_isError(resetErr)) goto error; |
| } |
| |
| zwd->inBuffer.src = zwd->headerBuf; |
| zwd->inBuffer.size = ZSTD_HEADERSIZE; |
| zwd->inBuffer.pos = 0; |
| zwd->outBuffer.dst = strm->next_out; |
| zwd->outBuffer.size = 0; |
| zwd->outBuffer.pos = 0; |
| { size_t const dErr = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer); |
| LOG_WRAPPERD("inflate ZSTD_decompressStream1 errorCode=%d srcSize=%d dstCapacity=%d\n", |
| (int)dErr, (int)zwd->inBuffer.size, (int)zwd->outBuffer.size); |
| if (ZSTD_isError(dErr)) { |
| LOG_WRAPPERD("ERROR: ZSTD_decompressStream1 %s\n", ZSTD_getErrorName(dErr)); |
| goto error; |
| } } |
| if (zwd->inBuffer.pos != zwd->inBuffer.size) goto error; /* not consumed */ |
| } |
| } /* (zwd->totalInBytes < ZSTD_HEADERSIZE) */ |
| |
| zwd->inBuffer.src = strm->next_in; |
| zwd->inBuffer.size = strm->avail_in; |
| zwd->inBuffer.pos = 0; |
| zwd->outBuffer.dst = strm->next_out; |
| zwd->outBuffer.size = strm->avail_out; |
| zwd->outBuffer.pos = 0; |
| { size_t const dErr = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer); |
| LOG_WRAPPERD("inflate ZSTD_decompressStream2 errorCode=%d srcSize=%d dstCapacity=%d\n", |
| (int)dErr, (int)strm->avail_in, (int)strm->avail_out); |
| if (ZSTD_isError(dErr)) { |
| zwd->errorCount++; |
| LOG_WRAPPERD("ERROR: ZSTD_decompressStream2 %s zwd->errorCount=%d\n", |
| ZSTD_getErrorName(dErr), zwd->errorCount); |
| if (zwd->errorCount<=1) return Z_NEED_DICT; else goto error; |
| } |
| LOG_WRAPPERD("inflate inBuffer.pos=%d inBuffer.size=%d outBuffer.pos=%d outBuffer.size=%d o\n", |
| (int)zwd->inBuffer.pos, (int)zwd->inBuffer.size, (int)zwd->outBuffer.pos, (int)zwd->outBuffer.size); |
| strm->next_out += zwd->outBuffer.pos; |
| strm->total_out += zwd->outBuffer.pos; |
| strm->avail_out -= zwd->outBuffer.pos; |
| strm->total_in += zwd->inBuffer.pos; |
| zwd->totalInBytes += zwd->inBuffer.pos; |
| strm->next_in += zwd->inBuffer.pos; |
| strm->avail_in -= zwd->inBuffer.pos; |
| if (dErr == 0) { |
| LOG_WRAPPERD("inflate Z_STREAM_END1 avail_in=%d avail_out=%d total_in=%d total_out=%d\n", |
| (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out); |
| zwd->decompState = ZWRAP_streamEnd; |
| return Z_STREAM_END; |
| } |
| } /* dErr lifetime */ |
| |
| LOG_WRAPPERD("- inflate2 flush=%d avail_in=%d avail_out=%d total_in=%d total_out=%d res=%d\n", |
| (int)flush, (int)strm->avail_in, (int)strm->avail_out, (int)strm->total_in, (int)strm->total_out, Z_OK); |
| return Z_OK; |
| |
| error: |
| return ZWRAPD_finishWithError(zwd, strm, 0); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateEnd OF((z_streamp strm)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateEnd(strm); |
| |
| LOG_WRAPPERD("- inflateEnd total_in=%d total_out=%d\n", |
| (int)(strm->total_in), (int)(strm->total_out)); |
| { ZWRAP_DCtx* const zwd = (ZWRAP_DCtx*) strm->state; |
| if (zwd == NULL) return Z_OK; /* structures are already freed */ |
| { size_t const freeErr = ZWRAP_freeDCtx(zwd); |
| if (ZSTD_isError(freeErr)) return Z_STREAM_ERROR; } |
| strm->state = NULL; |
| } |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateSync OF((z_streamp strm)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) { |
| return inflateSync(strm); |
| } |
| |
| return z_inflate(strm, Z_INFLATE_SYNC); |
| } |
| |
| |
| |
| /* Advanced compression functions */ |
| ZEXTERN int ZEXPORT z_deflateCopy OF((z_streamp dest, |
| z_streamp source)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateCopy(dest, source); |
| return ZWRAPC_finishWithErrorMsg(source, "deflateCopy is not supported!"); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateTune OF((z_streamp strm, |
| int good_length, |
| int max_lazy, |
| int nice_length, |
| int max_chain)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateTune(strm, good_length, max_lazy, nice_length, max_chain); |
| return ZWRAPC_finishWithErrorMsg(strm, "deflateTune is not supported!"); |
| } |
| |
| |
| #if ZLIB_VERNUM >= 0x1260 |
| ZEXTERN int ZEXPORT z_deflatePending OF((z_streamp strm, |
| unsigned *pending, |
| int *bits)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflatePending(strm, pending, bits); |
| return ZWRAPC_finishWithErrorMsg(strm, "deflatePending is not supported!"); |
| } |
| #endif |
| |
| |
| ZEXTERN int ZEXPORT z_deflatePrime OF((z_streamp strm, |
| int bits, |
| int value)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflatePrime(strm, bits, value); |
| return ZWRAPC_finishWithErrorMsg(strm, "deflatePrime is not supported!"); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_deflateSetHeader OF((z_streamp strm, |
| gz_headerp head)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return deflateSetHeader(strm, head); |
| return ZWRAPC_finishWithErrorMsg(strm, "deflateSetHeader is not supported!"); |
| } |
| |
| |
| |
| |
| /* Advanced decompression functions */ |
| #if ZLIB_VERNUM >= 0x1280 |
| ZEXTERN int ZEXPORT z_inflateGetDictionary OF((z_streamp strm, |
| Bytef *dictionary, |
| uInt *dictLength)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateGetDictionary(strm, dictionary, dictLength); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflateGetDictionary is not supported!"); |
| } |
| #endif |
| |
| |
| ZEXTERN int ZEXPORT z_inflateCopy OF((z_streamp dest, |
| z_streamp source)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !source->reserved) |
| return inflateCopy(dest, source); |
| return ZWRAPD_finishWithErrorMsg(source, "inflateCopy is not supported!"); |
| } |
| |
| |
| #if ZLIB_VERNUM >= 0x1240 |
| ZEXTERN long ZEXPORT z_inflateMark OF((z_streamp strm)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateMark(strm); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflateMark is not supported!"); |
| } |
| #endif |
| |
| |
| ZEXTERN int ZEXPORT z_inflatePrime OF((z_streamp strm, |
| int bits, |
| int value)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflatePrime(strm, bits, value); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflatePrime is not supported!"); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateGetHeader OF((z_streamp strm, |
| gz_headerp head)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateGetHeader(strm, head); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflateGetHeader is not supported!"); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateBackInit_ OF((z_streamp strm, int windowBits, |
| unsigned char FAR *window, |
| const char *version, |
| int stream_size)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateBackInit_(strm, windowBits, window, version, stream_size); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflateBackInit is not supported!"); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateBack OF((z_streamp strm, |
| in_func in, void FAR *in_desc, |
| out_func out, void FAR *out_desc)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateBack(strm, in, in_desc, out, out_desc); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflateBack is not supported!"); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_inflateBackEnd OF((z_streamp strm)) |
| { |
| if (g_ZWRAPdecompressionType == ZWRAP_FORCE_ZLIB || !strm->reserved) |
| return inflateBackEnd(strm); |
| return ZWRAPD_finishWithErrorMsg(strm, "inflateBackEnd is not supported!"); |
| } |
| |
| |
| ZEXTERN uLong ZEXPORT z_zlibCompileFlags OF((void)) { return zlibCompileFlags(); } |
| |
| |
| |
| /* === utility functions === */ |
| #ifndef Z_SOLO |
| |
| ZEXTERN int ZEXPORT z_compress OF((Bytef *dest, uLongf *destLen, |
| const Bytef *source, uLong sourceLen)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return compress(dest, destLen, source, sourceLen); |
| |
| { size_t dstCapacity = *destLen; |
| size_t const cSize = ZSTD_compress(dest, dstCapacity, |
| source, sourceLen, |
| ZWRAP_DEFAULT_CLEVEL); |
| LOG_WRAPPERD("z_compress sourceLen=%d dstCapacity=%d\n", |
| (int)sourceLen, (int)dstCapacity); |
| if (ZSTD_isError(cSize)) return Z_STREAM_ERROR; |
| *destLen = cSize; |
| } |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_compress2 OF((Bytef *dest, uLongf *destLen, |
| const Bytef *source, uLong sourceLen, |
| int level)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return compress2(dest, destLen, source, sourceLen, level); |
| |
| { size_t dstCapacity = *destLen; |
| size_t const cSize = ZSTD_compress(dest, dstCapacity, source, sourceLen, level); |
| if (ZSTD_isError(cSize)) return Z_STREAM_ERROR; |
| *destLen = cSize; |
| } |
| return Z_OK; |
| } |
| |
| |
| ZEXTERN uLong ZEXPORT z_compressBound OF((uLong sourceLen)) |
| { |
| if (!g_ZWRAP_useZSTDcompression) |
| return compressBound(sourceLen); |
| |
| return ZSTD_compressBound(sourceLen); |
| } |
| |
| |
| ZEXTERN int ZEXPORT z_uncompress OF((Bytef *dest, uLongf *destLen, |
| const Bytef *source, uLong sourceLen)) |
| { |
| if (!ZSTD_isFrame(source, sourceLen)) |
| return uncompress(dest, destLen, source, sourceLen); |
| |
| { size_t dstCapacity = *destLen; |
| size_t const dSize = ZSTD_decompress(dest, dstCapacity, source, sourceLen); |
| if (ZSTD_isError(dSize)) return Z_STREAM_ERROR; |
| *destLen = dSize; |
| } |
| return Z_OK; |
| } |
| |
| #endif /* !Z_SOLO */ |
| |
| |
| /* checksum functions */ |
| |
| ZEXTERN uLong ZEXPORT z_adler32 OF((uLong adler, const Bytef *buf, uInt len)) |
| { |
| return adler32(adler, buf, len); |
| } |
| |
| ZEXTERN uLong ZEXPORT z_crc32 OF((uLong crc, const Bytef *buf, uInt len)) |
| { |
| return crc32(crc, buf, len); |
| } |
| |
| |
| #if ZLIB_VERNUM >= 0x12B0 |
| ZEXTERN uLong ZEXPORT z_adler32_z OF((uLong adler, const Bytef *buf, z_size_t len)) |
| { |
| return adler32_z(adler, buf, len); |
| } |
| |
| ZEXTERN uLong ZEXPORT z_crc32_z OF((uLong crc, const Bytef *buf, z_size_t len)) |
| { |
| return crc32_z(crc, buf, len); |
| } |
| #endif |
| |
| |
| #if ZLIB_VERNUM >= 0x1270 |
| ZEXTERN const z_crc_t FAR * ZEXPORT z_get_crc_table OF((void)) |
| { |
| return get_crc_table(); |
| } |
| #endif |
