1024 lines
31 KiB
C
1024 lines
31 KiB
C
/**
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* Copyright (c) 2016-present, Przemyslaw Skibinski, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#include <stdio.h> /* vsprintf */
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#include <stdarg.h> /* va_list, for z_gzprintf */
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#include <zlib.h>
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#include "zstd_zlibwrapper.h"
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_MAGICNUMBER */
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#include "zstd.h"
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#include "zstd_internal.h" /* defaultCustomMem */
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#define Z_INFLATE_SYNC 8
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#define ZLIB_HEADERSIZE 4
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#define ZSTD_HEADERSIZE ZSTD_frameHeaderSize_min
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#define ZWRAP_DEFAULT_CLEVEL 5 /* Z_DEFAULT_COMPRESSION is translated to ZWRAP_DEFAULT_CLEVEL for zstd */
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#define LOG_WRAPPER(...) /* printf(__VA_ARGS__) */
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#define FINISH_WITH_GZ_ERR(msg) { \
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(void)msg; \
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return Z_MEM_ERROR; \
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}
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#define FINISH_WITH_ERR(strm, message) { \
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strm->msg = message; \
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return Z_MEM_ERROR; \
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}
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#define FINISH_WITH_NULL_ERR(msg) { \
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(void)msg; \
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return NULL; \
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}
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#ifndef ZWRAP_USE_ZSTD
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#define ZWRAP_USE_ZSTD 0
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#endif
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static int g_useZSTD = ZWRAP_USE_ZSTD; /* 0 = don't use ZSTD */
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void useZSTD(int turn_on) { g_useZSTD = turn_on; }
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int isUsingZSTD(void) { return g_useZSTD; }
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const char * zstdVersion(void) { return ZSTD_VERSION_STRING; }
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ZEXTERN const char * ZEXPORT z_zlibVersion OF((void)) { return zlibVersion(); }
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static void* ZWRAP_allocFunction(void* opaque, size_t size)
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{
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z_streamp strm = (z_streamp) opaque;
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void* address = strm->zalloc(strm->opaque, 1, size);
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/* printf("ZWRAP alloc %p, %d \n", address, (int)size); */
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return address;
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}
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static void ZWRAP_freeFunction(void* opaque, void* address)
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{
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z_streamp strm = (z_streamp) opaque;
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strm->zfree(strm->opaque, address);
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/* if (address) printf("ZWRAP free %p \n", address); */
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}
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/* *** Compression *** */
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typedef struct {
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ZSTD_CStream* zbc;
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int compressionLevel;
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ZSTD_customMem customMem;
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z_stream allocFunc; /* copy of zalloc, zfree, opaque */
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ZSTD_inBuffer inBuffer;
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ZSTD_outBuffer outBuffer;
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} ZWRAP_CCtx;
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size_t ZWRAP_freeCCtx(ZWRAP_CCtx* zwc)
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{
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if (zwc==NULL) return 0; /* support free on NULL */
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ZSTD_freeCStream(zwc->zbc);
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zwc->customMem.customFree(zwc->customMem.opaque, zwc);
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return 0;
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}
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ZWRAP_CCtx* ZWRAP_createCCtx(z_streamp strm)
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{
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ZWRAP_CCtx* zwc;
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if (strm->zalloc && strm->zfree) {
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zwc = (ZWRAP_CCtx*)strm->zalloc(strm->opaque, 1, sizeof(ZWRAP_CCtx));
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if (zwc==NULL) return NULL;
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memset(zwc, 0, sizeof(ZWRAP_CCtx));
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memcpy(&zwc->allocFunc, strm, sizeof(z_stream));
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{ ZSTD_customMem ZWRAP_customMem = { ZWRAP_allocFunction, ZWRAP_freeFunction, &zwc->allocFunc };
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memcpy(&zwc->customMem, &ZWRAP_customMem, sizeof(ZSTD_customMem));
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}
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} else {
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zwc = (ZWRAP_CCtx*)defaultCustomMem.customAlloc(defaultCustomMem.opaque, sizeof(ZWRAP_CCtx));
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if (zwc==NULL) return NULL;
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memset(zwc, 0, sizeof(ZWRAP_CCtx));
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memcpy(&zwc->customMem, &defaultCustomMem, sizeof(ZSTD_customMem));
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}
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zwc->zbc = ZSTD_createCStream_advanced(zwc->customMem);
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if (zwc->zbc == NULL) { ZWRAP_freeCCtx(zwc); return NULL; }
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return zwc;
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}
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ZEXTERN int ZEXPORT z_deflateInit_ OF((z_streamp strm, int level,
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const char *version, int stream_size))
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{
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ZWRAP_CCtx* zwc;
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if (!g_useZSTD) {
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LOG_WRAPPER("- deflateInit level=%d\n", level);
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return deflateInit_((strm), (level), version, stream_size);
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}
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LOG_WRAPPER("- deflateInit level=%d\n", level);
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zwc = ZWRAP_createCCtx(strm);
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if (zwc == NULL) return Z_MEM_ERROR;
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if (level == Z_DEFAULT_COMPRESSION)
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level = ZWRAP_DEFAULT_CLEVEL;
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{ size_t const errorCode = ZSTD_initCStream(zwc->zbc, level);
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if (ZSTD_isError(errorCode)) return Z_MEM_ERROR; }
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zwc->compressionLevel = level;
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strm->state = (struct internal_state*) zwc; /* use state which in not used by user */
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strm->total_in = 0;
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strm->total_out = 0;
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return Z_OK;
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}
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ZEXTERN int ZEXPORT z_deflateInit2_ OF((z_streamp strm, int level, int method,
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int windowBits, int memLevel,
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int strategy, const char *version,
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int stream_size))
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{
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if (!g_useZSTD)
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return deflateInit2_(strm, level, method, windowBits, memLevel, strategy, version, stream_size);
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return z_deflateInit_ (strm, level, version, stream_size);
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}
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ZEXTERN int ZEXPORT z_deflateReset OF((z_streamp strm))
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{
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if (!g_useZSTD)
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return deflateReset(strm);
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FINISH_WITH_ERR(strm, "deflateReset is not supported!");
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}
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ZEXTERN int ZEXPORT z_deflateSetDictionary OF((z_streamp strm,
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const Bytef *dictionary,
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uInt dictLength))
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{
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if (!g_useZSTD)
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return deflateSetDictionary(strm, dictionary, dictLength);
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{ ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state;
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LOG_WRAPPER("- deflateSetDictionary level=%d\n", (int)zwc->compressionLevel);
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{ size_t const errorCode = ZSTD_initCStream_usingDict(zwc->zbc, dictionary, dictLength, zwc->compressionLevel);
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if (ZSTD_isError(errorCode)) return Z_MEM_ERROR; }
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}
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return Z_OK;
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}
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/*
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#define Z_NO_FLUSH 0
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#define Z_PARTIAL_FLUSH 1
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#define Z_SYNC_FLUSH 2
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#define Z_FULL_FLUSH 3
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#define Z_FINISH 4
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#define Z_BLOCK 5
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#define Z_TREES 6
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*/
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ZEXTERN int ZEXPORT z_deflate OF((z_streamp strm, int flush))
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{
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ZWRAP_CCtx* zwc;
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if (!g_useZSTD) {
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int res = deflate(strm, flush);
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LOG_WRAPPER("- avail_in=%d total_in=%d total_out=%d\n", (int)strm->avail_in, (int)strm->total_in, (int)strm->total_out);
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return res;
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}
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zwc = (ZWRAP_CCtx*) strm->state;
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LOG_WRAPPER("deflate 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);
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if (strm->avail_in > 0) {
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zwc->inBuffer.src = strm->next_in;
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zwc->inBuffer.size = strm->avail_in;
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zwc->inBuffer.pos = 0;
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zwc->outBuffer.dst = strm->next_out;
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zwc->outBuffer.size = strm->avail_out;
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zwc->outBuffer.pos = 0;
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{ size_t const errorCode = ZSTD_compressStream(zwc->zbc, &zwc->outBuffer, &zwc->inBuffer);
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LOG_WRAPPER("ZSTD_compressStream srcSize=%d dstCapacity=%d\n", (int)zwc->inBuffer.size, (int)zwc->outBuffer.size);
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if (ZSTD_isError(errorCode)) return Z_MEM_ERROR;
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}
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strm->next_out += zwc->outBuffer.pos;
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strm->total_out += zwc->outBuffer.pos;
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strm->avail_out -= zwc->outBuffer.pos;
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strm->total_in += zwc->inBuffer.pos;
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strm->next_in += zwc->inBuffer.pos;
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strm->avail_in -= zwc->inBuffer.pos;
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}
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if (flush == Z_FULL_FLUSH || flush == Z_BLOCK || flush == Z_TREES) FINISH_WITH_ERR(strm, "Z_FULL_FLUSH, Z_BLOCK and Z_TREES are not supported!");
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if (flush == Z_FINISH) {
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size_t bytesLeft;
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zwc->outBuffer.dst = strm->next_out;
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zwc->outBuffer.size = strm->avail_out;
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zwc->outBuffer.pos = 0;
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bytesLeft = ZSTD_endStream(zwc->zbc, &zwc->outBuffer);
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LOG_WRAPPER("ZSTD_endStream dstCapacity=%d bytesLeft=%d\n", (int)strm->avail_out, (int)bytesLeft);
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if (ZSTD_isError(bytesLeft)) return Z_MEM_ERROR;
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strm->next_out += zwc->outBuffer.pos;
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strm->total_out += zwc->outBuffer.pos;
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strm->avail_out -= zwc->outBuffer.pos;
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if (bytesLeft == 0) return Z_STREAM_END;
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}
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else
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if (flush == Z_SYNC_FLUSH || flush == Z_PARTIAL_FLUSH) {
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size_t bytesLeft;
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zwc->outBuffer.dst = strm->next_out;
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zwc->outBuffer.size = strm->avail_out;
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zwc->outBuffer.pos = 0;
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bytesLeft = ZSTD_flushStream(zwc->zbc, &zwc->outBuffer);
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LOG_WRAPPER("ZSTD_flushStream dstCapacity=%d bytesLeft=%d\n", (int)strm->avail_out, (int)bytesLeft);
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if (ZSTD_isError(bytesLeft)) return Z_MEM_ERROR;
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strm->next_out += zwc->outBuffer.pos;
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strm->total_out += zwc->outBuffer.pos;
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strm->avail_out -= zwc->outBuffer.pos;
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}
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return Z_OK;
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}
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ZEXTERN int ZEXPORT z_deflateEnd OF((z_streamp strm))
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{
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if (!g_useZSTD) {
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LOG_WRAPPER("- deflateEnd\n");
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return deflateEnd(strm);
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}
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LOG_WRAPPER("- deflateEnd total_in=%d total_out=%d\n", (int)(strm->total_in), (int)(strm->total_out));
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{ ZWRAP_CCtx* zwc = (ZWRAP_CCtx*) strm->state;
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size_t const errorCode = ZWRAP_freeCCtx(zwc);
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if (ZSTD_isError(errorCode)) return Z_MEM_ERROR;
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}
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return Z_OK;
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}
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ZEXTERN uLong ZEXPORT z_deflateBound OF((z_streamp strm,
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uLong sourceLen))
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{
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if (!g_useZSTD)
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return deflateBound(strm, sourceLen);
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return ZSTD_compressBound(sourceLen);
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}
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ZEXTERN int ZEXPORT z_deflateParams OF((z_streamp strm,
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int level,
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int strategy))
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{
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if (!g_useZSTD) {
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LOG_WRAPPER("- deflateParams level=%d strategy=%d\n", level, strategy);
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return deflateParams(strm, level, strategy);
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}
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return Z_OK;
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}
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/* *** Decompression *** */
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typedef struct {
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ZSTD_DStream* zbd;
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char headerBuf[16]; /* should be equal or bigger than ZSTD_frameHeaderSize_min */
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int errorCount;
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/* zlib params */
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int stream_size;
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char *version;
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int windowBits;
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ZSTD_customMem customMem;
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z_stream allocFunc; /* copy of zalloc, zfree, opaque */
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ZSTD_inBuffer inBuffer;
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ZSTD_outBuffer outBuffer;
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} ZWRAP_DCtx;
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ZWRAP_DCtx* ZWRAP_createDCtx(z_streamp strm)
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{
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ZWRAP_DCtx* zwd;
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if (strm->zalloc && strm->zfree) {
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zwd = (ZWRAP_DCtx*)strm->zalloc(strm->opaque, 1, sizeof(ZWRAP_DCtx));
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if (zwd==NULL) return NULL;
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memset(zwd, 0, sizeof(ZWRAP_DCtx));
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memcpy(&zwd->allocFunc, strm, sizeof(z_stream));
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{ ZSTD_customMem ZWRAP_customMem = { ZWRAP_allocFunction, ZWRAP_freeFunction, &zwd->allocFunc };
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memcpy(&zwd->customMem, &ZWRAP_customMem, sizeof(ZSTD_customMem));
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}
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} else {
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zwd = (ZWRAP_DCtx*)defaultCustomMem.customAlloc(defaultCustomMem.opaque, sizeof(ZWRAP_DCtx));
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if (zwd==NULL) return NULL;
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memset(zwd, 0, sizeof(ZWRAP_DCtx));
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memcpy(&zwd->customMem, &defaultCustomMem, sizeof(ZSTD_customMem));
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}
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zwd->outBuffer.pos = 0;
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zwd->outBuffer.size = 0;
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return zwd;
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}
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size_t ZWRAP_freeDCtx(ZWRAP_DCtx* zwd)
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{
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if (zwd==NULL) return 0; /* support free on null */
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ZSTD_freeDStream(zwd->zbd);
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if (zwd->version) zwd->customMem.customFree(zwd->customMem.opaque, zwd->version);
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zwd->customMem.customFree(zwd->customMem.opaque, zwd);
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return 0;
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}
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int ZWRAP_finish_with_error(ZWRAP_DCtx* zwd, z_streamp strm, int error)
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{
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if (zwd) ZWRAP_freeDCtx(zwd);
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strm->state = NULL;
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return (error) ? error : Z_DATA_ERROR;
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}
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ZEXTERN int ZEXPORT z_inflateInit_ OF((z_streamp strm,
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const char *version, int stream_size))
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{
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ZWRAP_DCtx* zwd = ZWRAP_createDCtx(strm);
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LOG_WRAPPER("- inflateInit\n");
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if (zwd == NULL) return ZWRAP_finish_with_error(zwd, strm, 0);
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zwd->version = zwd->customMem.customAlloc(zwd->customMem.opaque, strlen(version) + 1);
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if (zwd->version == NULL) return ZWRAP_finish_with_error(zwd, strm, 0);
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strcpy(zwd->version, version);
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zwd->stream_size = stream_size;
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strm->state = (struct internal_state*) zwd; /* use state which in not used by user */
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strm->total_in = 0;
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strm->total_out = 0;
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strm->reserved = 1; /* mark as unknown steam */
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return Z_OK;
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}
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ZEXTERN int ZEXPORT z_inflateInit2_ OF((z_streamp strm, int windowBits,
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const char *version, int stream_size))
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{
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int ret = z_inflateInit_ (strm, version, stream_size);
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if (ret == Z_OK) {
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ZWRAP_DCtx* zwd = (ZWRAP_DCtx*)strm->state;
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zwd->windowBits = windowBits;
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}
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return ret;
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}
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ZEXTERN int ZEXPORT z_inflateSetDictionary OF((z_streamp strm,
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const Bytef *dictionary,
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uInt dictLength))
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{
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if (!strm->reserved)
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return inflateSetDictionary(strm, dictionary, dictLength);
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LOG_WRAPPER("- inflateSetDictionary\n");
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{ size_t errorCode;
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ZWRAP_DCtx* zwd = (ZWRAP_DCtx*) strm->state;
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if (strm->state == NULL) return Z_MEM_ERROR;
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errorCode = ZSTD_initDStream_usingDict(zwd->zbd, dictionary, dictLength);
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if (ZSTD_isError(errorCode)) return ZWRAP_finish_with_error(zwd, strm, 0);
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if (strm->total_in == ZSTD_HEADERSIZE) {
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zwd->inBuffer.src = zwd->headerBuf;
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zwd->inBuffer.size = strm->total_in;
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zwd->inBuffer.pos = 0;
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zwd->outBuffer.dst = strm->next_out;
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zwd->outBuffer.size = 0;
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zwd->outBuffer.pos = 0;
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errorCode = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer);
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LOG_WRAPPER("ZSTD_decompressStream3 errorCode=%d srcSize=%d dstCapacity=%d\n", (int)errorCode, (int)zwd->inBuffer.size, (int)zwd->outBuffer.size);
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if (zwd->inBuffer.pos < zwd->outBuffer.size || ZSTD_isError(errorCode)) {
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LOG_WRAPPER("ERROR: ZSTD_decompressStream %s\n", ZSTD_getErrorName(errorCode));
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return ZWRAP_finish_with_error(zwd, strm, 0);
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}
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}
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}
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return Z_OK;
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}
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ZEXTERN int ZEXPORT z_inflate OF((z_streamp strm, int flush))
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{
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if (!strm->reserved)
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return inflate(strm, flush);
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if (strm->avail_in > 0) {
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size_t errorCode, srcSize, inPos;
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ZWRAP_DCtx* zwd = (ZWRAP_DCtx*) strm->state;
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if (strm->state == NULL) return Z_MEM_ERROR;
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LOG_WRAPPER("inflate 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);
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// if (((strm->avail_in < ZSTD_HEADERSIZE) || (strm->total_in > 0)) && (strm->total_in < ZLIB_HEADERSIZE))
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if (strm->total_in < ZLIB_HEADERSIZE)
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{
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// printf(".");
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srcSize = MIN(strm->avail_in, ZLIB_HEADERSIZE - strm->total_in);
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memcpy(zwd->headerBuf+strm->total_in, strm->next_in, srcSize);
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strm->total_in += srcSize;
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strm->next_in += srcSize;
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strm->avail_in -= srcSize;
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if (strm->total_in < ZLIB_HEADERSIZE) return Z_OK;
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if (MEM_readLE32(zwd->headerBuf) != ZSTD_MAGICNUMBER) {
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|
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;
|
|
|
|
if (zwd->windowBits)
|
|
errorCode = inflateInit2_(strm, zwd->windowBits, zwd->version, zwd->stream_size);
|
|
else
|
|
errorCode = inflateInit_(strm, zwd->version, zwd->stream_size);
|
|
LOG_WRAPPER("ZLIB inflateInit errorCode=%d\n", (int)errorCode);
|
|
if (errorCode != Z_OK) return ZWRAP_finish_with_error(zwd, strm, (int)errorCode);
|
|
|
|
/* inflate header */
|
|
strm->next_in = (unsigned char*)zwd->headerBuf;
|
|
strm->avail_in = ZLIB_HEADERSIZE;
|
|
strm->avail_out = 0;
|
|
errorCode = inflate(strm, Z_NO_FLUSH);
|
|
LOG_WRAPPER("ZLIB inflate errorCode=%d strm->avail_in=%d\n", (int)errorCode, (int)strm->avail_in);
|
|
if (errorCode != Z_OK) return ZWRAP_finish_with_error(zwd, strm, (int)errorCode);
|
|
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 = 0; /* mark as zlib stream */
|
|
errorCode = ZWRAP_freeDCtx(zwd);
|
|
if (ZSTD_isError(errorCode)) goto error;
|
|
|
|
if (flush == Z_INFLATE_SYNC) return inflateSync(strm);
|
|
return inflate(strm, flush);
|
|
}
|
|
}
|
|
|
|
// if (((strm->avail_in < ZSTD_HEADERSIZE) || (strm->total_in > 0)) && (strm->total_in < ZSTD_HEADERSIZE))
|
|
if (strm->total_in < ZSTD_HEADERSIZE)
|
|
{
|
|
// printf("+");
|
|
srcSize = MIN(strm->avail_in, ZSTD_HEADERSIZE - strm->total_in);
|
|
memcpy(zwd->headerBuf+strm->total_in, strm->next_in, srcSize);
|
|
strm->total_in += srcSize;
|
|
strm->next_in += srcSize;
|
|
strm->avail_in -= srcSize;
|
|
if (strm->total_in < ZSTD_HEADERSIZE) return Z_OK;
|
|
|
|
zwd->zbd = ZSTD_createDStream_advanced(zwd->customMem);
|
|
if (zwd->zbd == NULL) goto error;
|
|
|
|
errorCode = ZSTD_initDStream(zwd->zbd);
|
|
if (ZSTD_isError(errorCode)) goto error;
|
|
|
|
if (flush == Z_INFLATE_SYNC) { strm->msg = "inflateSync is not supported!"; goto error; }
|
|
|
|
inPos = zwd->inBuffer.pos;
|
|
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;
|
|
errorCode = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer);
|
|
LOG_WRAPPER("ZSTD_decompressStream1 errorCode=%d srcSize=%d dstCapacity=%d\n", (int)errorCode, (int)zwd->inBuffer.size, (int)zwd->outBuffer.size);
|
|
if (ZSTD_isError(errorCode)) {
|
|
LOG_WRAPPER("ERROR: ZSTD_decompressStream %s\n", ZSTD_getErrorName(errorCode));
|
|
goto error;
|
|
}
|
|
// LOG_WRAPPER("1srcSize=%d inpos=%d inBuffer.pos=%d inBuffer.size=%d outBuffer.pos=%d\n", (int)srcSize, (int)inPos, (int)zwd->inBuffer.pos, (int)zwd->inBuffer.size, (int)zwd->outBuffer.pos);
|
|
if (zwd->inBuffer.pos == zwd->inBuffer.size) return Z_OK;
|
|
}
|
|
|
|
inPos = 0;//zwd->inBuffer.pos;
|
|
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;
|
|
errorCode = ZSTD_decompressStream(zwd->zbd, &zwd->outBuffer, &zwd->inBuffer);
|
|
// LOG_WRAPPER("2 inpos=%d inBuffer.pos=%d inBuffer.size=%d outBuffer.pos=%d\n", (int)inPos, (int)zwd->inBuffer.pos, (int)zwd->inBuffer.size, (int)zwd->outBuffer.pos);
|
|
LOG_WRAPPER("ZSTD_decompressStream2 errorCode=%d srcSize=%d dstCapacity=%d\n", (int)errorCode, (int)strm->avail_in, (int)strm->avail_out);
|
|
if (ZSTD_isError(errorCode)) {
|
|
LOG_WRAPPER("ERROR: ZSTD_decompressStream %s\n", ZSTD_getErrorName(errorCode));
|
|
zwd->errorCount++;
|
|
if (zwd->errorCount<=1) return Z_NEED_DICT; else goto error;
|
|
}
|
|
strm->next_out += zwd->outBuffer.pos;
|
|
strm->total_out += zwd->outBuffer.pos;
|
|
strm->avail_out -= zwd->outBuffer.pos;
|
|
strm->total_in += zwd->inBuffer.pos - inPos;
|
|
strm->next_in += zwd->inBuffer.pos - inPos;
|
|
strm->avail_in -= zwd->inBuffer.pos - inPos;
|
|
if (errorCode == 0) return Z_STREAM_END;
|
|
return Z_OK;
|
|
error:
|
|
return ZWRAP_finish_with_error(zwd, strm, 0);
|
|
}
|
|
return Z_OK;
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflateEnd OF((z_streamp strm))
|
|
{
|
|
int ret = Z_OK;
|
|
if (!strm->reserved)
|
|
return inflateEnd(strm);
|
|
|
|
LOG_WRAPPER("- inflateEnd total_in=%d total_out=%d\n", (int)(strm->total_in), (int)(strm->total_out));
|
|
{ ZWRAP_DCtx* zwd = (ZWRAP_DCtx*) strm->state;
|
|
size_t const errorCode = ZWRAP_freeDCtx(zwd);
|
|
strm->state = NULL;
|
|
if (ZSTD_isError(errorCode)) return Z_MEM_ERROR;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflateSync OF((z_streamp strm))
|
|
{
|
|
if (!strm->reserved)
|
|
return z_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_useZSTD)
|
|
return deflateCopy(dest, source);
|
|
FINISH_WITH_ERR(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_useZSTD)
|
|
return deflateTune(strm, good_length, max_lazy, nice_length, max_chain);
|
|
FINISH_WITH_ERR(strm, "deflateTune is not supported!");
|
|
}
|
|
|
|
|
|
#if ZLIB_VERNUM >= 0x1260
|
|
ZEXTERN int ZEXPORT z_deflatePending OF((z_streamp strm,
|
|
unsigned *pending,
|
|
int *bits))
|
|
{
|
|
if (!g_useZSTD)
|
|
return deflatePending(strm, pending, bits);
|
|
FINISH_WITH_ERR(strm, "deflatePending is not supported!");
|
|
}
|
|
#endif
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_deflatePrime OF((z_streamp strm,
|
|
int bits,
|
|
int value))
|
|
{
|
|
if (!g_useZSTD)
|
|
return deflatePrime(strm, bits, value);
|
|
FINISH_WITH_ERR(strm, "deflatePrime is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_deflateSetHeader OF((z_streamp strm,
|
|
gz_headerp head))
|
|
{
|
|
if (!g_useZSTD)
|
|
return deflateSetHeader(strm, head);
|
|
FINISH_WITH_ERR(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 (!strm->reserved)
|
|
return inflateGetDictionary(strm, dictionary, dictLength);
|
|
FINISH_WITH_ERR(strm, "inflateGetDictionary is not supported!");
|
|
}
|
|
#endif
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflateCopy OF((z_streamp dest,
|
|
z_streamp source))
|
|
{
|
|
if (!g_useZSTD)
|
|
return inflateCopy(dest, source);
|
|
FINISH_WITH_ERR(source, "inflateCopy is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflateReset OF((z_streamp strm))
|
|
{
|
|
if (!strm->reserved)
|
|
return inflateReset(strm);
|
|
FINISH_WITH_ERR(strm, "inflateReset is not supported!");
|
|
}
|
|
|
|
|
|
#if ZLIB_VERNUM >= 0x1240
|
|
ZEXTERN int ZEXPORT z_inflateReset2 OF((z_streamp strm,
|
|
int windowBits))
|
|
{
|
|
if (!strm->reserved)
|
|
return inflateReset2(strm, windowBits);
|
|
FINISH_WITH_ERR(strm, "inflateReset2 is not supported!");
|
|
}
|
|
#endif
|
|
|
|
|
|
#if ZLIB_VERNUM >= 0x1240
|
|
ZEXTERN long ZEXPORT z_inflateMark OF((z_streamp strm))
|
|
{
|
|
if (!strm->reserved)
|
|
return inflateMark(strm);
|
|
FINISH_WITH_ERR(strm, "inflateMark is not supported!");
|
|
}
|
|
#endif
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflatePrime OF((z_streamp strm,
|
|
int bits,
|
|
int value))
|
|
{
|
|
if (!strm->reserved)
|
|
return inflatePrime(strm, bits, value);
|
|
FINISH_WITH_ERR(strm, "inflatePrime is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflateGetHeader OF((z_streamp strm,
|
|
gz_headerp head))
|
|
{
|
|
if (!strm->reserved)
|
|
return inflateGetHeader(strm, head);
|
|
FINISH_WITH_ERR(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 (!strm->reserved)
|
|
return inflateBackInit_(strm, windowBits, window, version, stream_size);
|
|
FINISH_WITH_ERR(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 (!strm->reserved)
|
|
return inflateBack(strm, in, in_desc, out, out_desc);
|
|
FINISH_WITH_ERR(strm, "inflateBack is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_inflateBackEnd OF((z_streamp strm))
|
|
{
|
|
if (!strm->reserved)
|
|
return inflateBackEnd(strm);
|
|
FINISH_WITH_ERR(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_useZSTD)
|
|
return compress(dest, destLen, source, sourceLen);
|
|
|
|
{ size_t dstCapacity = *destLen;
|
|
size_t const errorCode = ZSTD_compress(dest, dstCapacity, source, sourceLen, ZWRAP_DEFAULT_CLEVEL);
|
|
LOG_WRAPPER("z_compress sourceLen=%d dstCapacity=%d\n", (int)sourceLen, (int)dstCapacity);
|
|
if (ZSTD_isError(errorCode)) return Z_MEM_ERROR;
|
|
*destLen = errorCode;
|
|
}
|
|
return Z_OK;
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_compress2 OF((Bytef *dest, uLongf *destLen,
|
|
const Bytef *source, uLong sourceLen,
|
|
int level))
|
|
{
|
|
if (!g_useZSTD)
|
|
return compress2(dest, destLen, source, sourceLen, level);
|
|
|
|
{ size_t dstCapacity = *destLen;
|
|
size_t const errorCode = ZSTD_compress(dest, dstCapacity, source, sourceLen, level);
|
|
if (ZSTD_isError(errorCode)) return Z_MEM_ERROR;
|
|
*destLen = errorCode;
|
|
}
|
|
return Z_OK;
|
|
}
|
|
|
|
|
|
ZEXTERN uLong ZEXPORT z_compressBound OF((uLong sourceLen))
|
|
{
|
|
if (!g_useZSTD)
|
|
return compressBound(sourceLen);
|
|
|
|
return ZSTD_compressBound(sourceLen);
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_uncompress OF((Bytef *dest, uLongf *destLen,
|
|
const Bytef *source, uLong sourceLen))
|
|
{
|
|
if (sourceLen < 4 || MEM_readLE32(source) != ZSTD_MAGICNUMBER)
|
|
return uncompress(dest, destLen, source, sourceLen);
|
|
|
|
{ size_t dstCapacity = *destLen;
|
|
size_t const errorCode = ZSTD_decompress(dest, dstCapacity, source, sourceLen);
|
|
if (ZSTD_isError(errorCode)) return Z_MEM_ERROR;
|
|
*destLen = errorCode;
|
|
}
|
|
return Z_OK;
|
|
}
|
|
|
|
|
|
|
|
/* gzip file access functions */
|
|
ZEXTERN gzFile ZEXPORT z_gzopen OF((const char *path, const char *mode))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzopen(path, mode);
|
|
FINISH_WITH_NULL_ERR("gzopen is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN gzFile ZEXPORT z_gzdopen OF((int fd, const char *mode))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzdopen(fd, mode);
|
|
FINISH_WITH_NULL_ERR("gzdopen is not supported!");
|
|
}
|
|
|
|
|
|
#if ZLIB_VERNUM >= 0x1240
|
|
ZEXTERN int ZEXPORT z_gzbuffer OF((gzFile file, unsigned size))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzbuffer(file, size);
|
|
FINISH_WITH_GZ_ERR("gzbuffer is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN z_off_t ZEXPORT z_gzoffset OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzoffset(file);
|
|
FINISH_WITH_GZ_ERR("gzoffset is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzclose_r OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzclose_r(file);
|
|
FINISH_WITH_GZ_ERR("gzclose_r is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzclose_w OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzclose_w(file);
|
|
FINISH_WITH_GZ_ERR("gzclose_w is not supported!");
|
|
}
|
|
#endif
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzsetparams OF((gzFile file, int level, int strategy))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzsetparams(file, level, strategy);
|
|
FINISH_WITH_GZ_ERR("gzsetparams is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzread OF((gzFile file, voidp buf, unsigned len))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzread(file, buf, len);
|
|
FINISH_WITH_GZ_ERR("gzread is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzwrite OF((gzFile file,
|
|
voidpc buf, unsigned len))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzwrite(file, buf, len);
|
|
FINISH_WITH_GZ_ERR("gzwrite is not supported!");
|
|
}
|
|
|
|
|
|
#if ZLIB_VERNUM >= 0x1260
|
|
ZEXTERN int ZEXPORTVA z_gzprintf Z_ARG((gzFile file, const char *format, ...))
|
|
#else
|
|
ZEXTERN int ZEXPORTVA z_gzprintf OF((gzFile file, const char *format, ...))
|
|
#endif
|
|
{
|
|
if (!g_useZSTD) {
|
|
int ret;
|
|
char buf[1024];
|
|
va_list args;
|
|
va_start (args, format);
|
|
ret = vsprintf (buf, format, args);
|
|
va_end (args);
|
|
|
|
ret = gzprintf(file, buf);
|
|
return ret;
|
|
}
|
|
FINISH_WITH_GZ_ERR("gzprintf is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzputs OF((gzFile file, const char *s))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzputs(file, s);
|
|
FINISH_WITH_GZ_ERR("gzputs is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN char * ZEXPORT z_gzgets OF((gzFile file, char *buf, int len))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzgets(file, buf, len);
|
|
FINISH_WITH_NULL_ERR("gzgets is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzputc OF((gzFile file, int c))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzputc(file, c);
|
|
FINISH_WITH_GZ_ERR("gzputc is not supported!");
|
|
}
|
|
|
|
|
|
#if ZLIB_VERNUM == 0x1260
|
|
ZEXTERN int ZEXPORT z_gzgetc_ OF((gzFile file))
|
|
#else
|
|
ZEXTERN int ZEXPORT z_gzgetc OF((gzFile file))
|
|
#endif
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzgetc(file);
|
|
FINISH_WITH_GZ_ERR("gzgetc is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzungetc OF((int c, gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzungetc(c, file);
|
|
FINISH_WITH_GZ_ERR("gzungetc is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzflush OF((gzFile file, int flush))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzflush(file, flush);
|
|
FINISH_WITH_GZ_ERR("gzflush is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN z_off_t ZEXPORT z_gzseek OF((gzFile file, z_off_t offset, int whence))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzseek(file, offset, whence);
|
|
FINISH_WITH_GZ_ERR("gzseek is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzrewind OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzrewind(file);
|
|
FINISH_WITH_GZ_ERR("gzrewind is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN z_off_t ZEXPORT z_gztell OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gztell(file);
|
|
FINISH_WITH_GZ_ERR("gztell is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzeof OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzeof(file);
|
|
FINISH_WITH_GZ_ERR("gzeof is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzdirect OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzdirect(file);
|
|
FINISH_WITH_GZ_ERR("gzdirect is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN int ZEXPORT z_gzclose OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzclose(file);
|
|
FINISH_WITH_GZ_ERR("gzclose is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN const char * ZEXPORT z_gzerror OF((gzFile file, int *errnum))
|
|
{
|
|
if (!g_useZSTD)
|
|
return gzerror(file, errnum);
|
|
FINISH_WITH_NULL_ERR("gzerror is not supported!");
|
|
}
|
|
|
|
|
|
ZEXTERN void ZEXPORT z_gzclearerr OF((gzFile file))
|
|
{
|
|
if (!g_useZSTD)
|
|
gzclearerr(file);
|
|
}
|
|
|
|
|
|
#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);
|
|
}
|