| /** | |
| * Copyright (c) 2016-present, Yann Collet, Facebook, Inc. | |
| * All rights reserved. | |
| * | |
| * This source code is licensed under the BSD-style license found in the | |
| * LICENSE file in the root directory of this source tree. An additional grant | |
| * of patent rights can be found in the PATENTS file in the same directory. | |
| */ | |
| /* ************************************* | |
| * Compiler Options | |
| ***************************************/ | |
| #ifdef _MSC_VER /* Visual */ | |
| # pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ | |
| # pragma warning(disable : 4204) /* non-constant aggregate initializer */ | |
| #endif | |
| #if defined(__MINGW32__) && !defined(_POSIX_SOURCE) | |
| # define _POSIX_SOURCE 1 /* disable %llu warnings with MinGW on Windows */ | |
| #endif | |
| /*-************************************* | |
| * Includes | |
| ***************************************/ | |
| #include "platform.h" /* Large Files support, SET_BINARY_MODE */ | |
| #include "util.h" /* UTIL_getFileSize */ | |
| #include <stdio.h> /* fprintf, fopen, fread, _fileno, stdin, stdout */ | |
| #include <stdlib.h> /* malloc, free */ | |
| #include <string.h> /* strcmp, strlen */ | |
| #include <time.h> /* clock */ | |
| #include <errno.h> /* errno */ | |
| #include "mem.h" | |
| #include "fileio.h" | |
| #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_magicNumber, ZSTD_frameHeaderSize_max */ | |
| #include "zstd.h" | |
| #ifdef ZSTD_MULTITHREAD | |
| # include "zstdmt_compress.h" | |
| #endif | |
| #if defined(ZSTD_GZCOMPRESS) || defined(ZSTD_GZDECOMPRESS) | |
| # include <zlib.h> | |
| # if !defined(z_const) | |
| # define z_const | |
| # endif | |
| #endif | |
| /*-************************************* | |
| * Constants | |
| ***************************************/ | |
| #define KB *(1<<10) | |
| #define MB *(1<<20) | |
| #define GB *(1U<<30) | |
| #define _1BIT 0x01 | |
| #define _2BITS 0x03 | |
| #define _3BITS 0x07 | |
| #define _4BITS 0x0F | |
| #define _6BITS 0x3F | |
| #define _8BITS 0xFF | |
| #define BLOCKSIZE (128 KB) | |
| #define ROLLBUFFERSIZE (BLOCKSIZE*8*64) | |
| #define FIO_FRAMEHEADERSIZE 5 /* as a define, because needed to allocated table on stack */ | |
| #define FSE_CHECKSUM_SEED 0 | |
| #define CACHELINE 64 | |
| #define MAX_DICT_SIZE (8 MB) /* protection against large input (attack scenario) */ | |
| #define FNSPACE 30 | |
| #define GZ_EXTENSION ".gz" | |
| /*-************************************* | |
| * Macros | |
| ***************************************/ | |
| #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) | |
| #define DISPLAYLEVEL(l, ...) { if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); } } | |
| static U32 g_displayLevel = 2; /* 0 : no display; 1: errors; 2 : + result + interaction + warnings; 3 : + progression; 4 : + information */ | |
| void FIO_setNotificationLevel(unsigned level) { g_displayLevel=level; } | |
| #define DISPLAYUPDATE(l, ...) { if (g_displayLevel>=l) { \ | |
| if ((clock() - g_time > refreshRate) || (g_displayLevel>=4)) \ | |
| { g_time = clock(); DISPLAY(__VA_ARGS__); \ | |
| if (g_displayLevel>=4) fflush(stdout); } } } | |
| static const clock_t refreshRate = CLOCKS_PER_SEC * 15 / 100; | |
| static clock_t g_time = 0; | |
| #define MIN(a,b) ((a) < (b) ? (a) : (b)) | |
| /* ************************************************************ | |
| * Avoid fseek()'s 2GiB barrier with MSVC, MacOS, *BSD, MinGW | |
| ***************************************************************/ | |
| #if defined(_MSC_VER) && _MSC_VER >= 1400 | |
| # define LONG_SEEK _fseeki64 | |
| #elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */ | |
| # define LONG_SEEK fseeko | |
| #elif defined(__MINGW32__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS) && defined(__MSVCRT__) | |
| # define LONG_SEEK fseeko64 | |
| #elif defined(_WIN32) && !defined(__DJGPP__) | |
| # include <windows.h> | |
| static int LONG_SEEK(FILE* file, __int64 offset, int origin) { | |
| LARGE_INTEGER off; | |
| DWORD method; | |
| off.QuadPart = offset; | |
| if (origin == SEEK_END) | |
| method = FILE_END; | |
| else if (origin == SEEK_CUR) | |
| method = FILE_CURRENT; | |
| else | |
| method = FILE_BEGIN; | |
| if (SetFilePointerEx((HANDLE) _get_osfhandle(_fileno(file)), off, NULL, method)) | |
| return 0; | |
| else | |
| return -1; | |
| } | |
| #else | |
| # define LONG_SEEK fseek | |
| #endif | |
| /*-************************************* | |
| * Local Parameters - Not thread safe | |
| ***************************************/ | |
| static FIO_compressionType_t g_compressionType = FIO_zstdCompression; | |
| void FIO_setCompressionType(FIO_compressionType_t compressionType) { g_compressionType = compressionType; } | |
| static U32 g_overwrite = 0; | |
| void FIO_overwriteMode(void) { g_overwrite=1; } | |
| static U32 g_sparseFileSupport = 1; /* 0 : no sparse allowed; 1: auto (file yes, stdout no); 2: force sparse */ | |
| void FIO_setSparseWrite(unsigned sparse) { g_sparseFileSupport=sparse; } | |
| static U32 g_dictIDFlag = 1; | |
| void FIO_setDictIDFlag(unsigned dictIDFlag) { g_dictIDFlag = dictIDFlag; } | |
| static U32 g_checksumFlag = 1; | |
| void FIO_setChecksumFlag(unsigned checksumFlag) { g_checksumFlag = checksumFlag; } | |
| static U32 g_removeSrcFile = 0; | |
| void FIO_setRemoveSrcFile(unsigned flag) { g_removeSrcFile = (flag>0); } | |
| static U32 g_memLimit = 0; | |
| void FIO_setMemLimit(unsigned memLimit) { g_memLimit = memLimit; } | |
| static U32 g_nbThreads = 1; | |
| void FIO_setNbThreads(unsigned nbThreads) { | |
| #ifndef ZSTD_MULTITHREAD | |
| if (nbThreads > 1) DISPLAYLEVEL(2, "Note : multi-threading is disabled \n"); | |
| #endif | |
| g_nbThreads = nbThreads; | |
| } | |
| static U32 g_blockSize = 0; | |
| void FIO_setBlockSize(unsigned blockSize) { | |
| if (blockSize && g_nbThreads==1) | |
| DISPLAYLEVEL(2, "Setting block size is useless in single-thread mode \n"); | |
| #ifdef ZSTD_MULTITHREAD | |
| if (blockSize-1 < ZSTDMT_SECTION_SIZE_MIN-1) /* intentional underflow */ | |
| DISPLAYLEVEL(2, "Note : minimum block size is %u KB \n", (ZSTDMT_SECTION_SIZE_MIN>>10)); | |
| #endif | |
| g_blockSize = blockSize; | |
| } | |
| #define FIO_OVERLAP_LOG_NOTSET 9999 | |
| static U32 g_overlapLog = FIO_OVERLAP_LOG_NOTSET; | |
| void FIO_setOverlapLog(unsigned overlapLog){ | |
| if (overlapLog && g_nbThreads==1) | |
| DISPLAYLEVEL(2, "Setting overlapLog is useless in single-thread mode \n"); | |
| g_overlapLog = overlapLog; | |
| } | |
| /*-************************************* | |
| * Exceptions | |
| ***************************************/ | |
| #ifndef DEBUG | |
| # define DEBUG 0 | |
| #endif | |
| #define DEBUGOUTPUT(...) if (DEBUG) DISPLAY(__VA_ARGS__); | |
| #define EXM_THROW(error, ...) \ | |
| { \ | |
| DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \ | |
| DISPLAYLEVEL(1, "Error %i : ", error); \ | |
| DISPLAYLEVEL(1, __VA_ARGS__); \ | |
| DISPLAYLEVEL(1, " \n"); \ | |
| exit(error); \ | |
| } | |
| /*-************************************* | |
| * Functions | |
| ***************************************/ | |
| /** FIO_openSrcFile() : | |
| * condition : `dstFileName` must be non-NULL. | |
| * @result : FILE* to `dstFileName`, or NULL if it fails */ | |
| static FILE* FIO_openSrcFile(const char* srcFileName) | |
| { | |
| FILE* f; | |
| if (!strcmp (srcFileName, stdinmark)) { | |
| DISPLAYLEVEL(4,"Using stdin for input\n"); | |
| f = stdin; | |
| SET_BINARY_MODE(stdin); | |
| } else { | |
| if (!UTIL_isRegFile(srcFileName)) { | |
| DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n", srcFileName); | |
| return NULL; | |
| } | |
| f = fopen(srcFileName, "rb"); | |
| if ( f==NULL ) DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno)); | |
| } | |
| return f; | |
| } | |
| /** FIO_openDstFile() : | |
| * condition : `dstFileName` must be non-NULL. | |
| * @result : FILE* to `dstFileName`, or NULL if it fails */ | |
| static FILE* FIO_openDstFile(const char* dstFileName) | |
| { | |
| FILE* f; | |
| if (!strcmp (dstFileName, stdoutmark)) { | |
| DISPLAYLEVEL(4,"Using stdout for output\n"); | |
| f = stdout; | |
| SET_BINARY_MODE(stdout); | |
| if (g_sparseFileSupport==1) { | |
| g_sparseFileSupport = 0; | |
| DISPLAYLEVEL(4, "Sparse File Support is automatically disabled on stdout ; try --sparse \n"); | |
| } | |
| } else { | |
| if (!g_overwrite && strcmp (dstFileName, nulmark)) { /* Check if destination file already exists */ | |
| f = fopen( dstFileName, "rb" ); | |
| if (f != 0) { /* dest file exists, prompt for overwrite authorization */ | |
| fclose(f); | |
| if (g_displayLevel <= 1) { | |
| /* No interaction possible */ | |
| DISPLAY("zstd: %s already exists; not overwritten \n", dstFileName); | |
| return NULL; | |
| } | |
| DISPLAY("zstd: %s already exists; do you wish to overwrite (y/N) ? ", dstFileName); | |
| { int ch = getchar(); | |
| if ((ch!='Y') && (ch!='y')) { | |
| DISPLAY(" not overwritten \n"); | |
| return NULL; | |
| } | |
| while ((ch!=EOF) && (ch!='\n')) ch = getchar(); /* flush rest of input line */ | |
| } } } | |
| f = fopen( dstFileName, "wb" ); | |
| if (f==NULL) DISPLAYLEVEL(1, "zstd: %s: %s\n", dstFileName, strerror(errno)); | |
| } | |
| return f; | |
| } | |
| /*! FIO_loadFile() : | |
| * creates a buffer, pointed by `*bufferPtr`, | |
| * loads `filename` content into it, | |
| * up to MAX_DICT_SIZE bytes. | |
| * @return : loaded size | |
| */ | |
| static size_t FIO_loadFile(void** bufferPtr, const char* fileName) | |
| { | |
| FILE* fileHandle; | |
| U64 fileSize; | |
| *bufferPtr = NULL; | |
| if (fileName == NULL) return 0; | |
| DISPLAYLEVEL(4,"Loading %s as dictionary \n", fileName); | |
| fileHandle = fopen(fileName, "rb"); | |
| if (fileHandle==0) EXM_THROW(31, "zstd: %s: %s", fileName, strerror(errno)); | |
| fileSize = UTIL_getFileSize(fileName); | |
| if (fileSize > MAX_DICT_SIZE) { | |
| int seekResult; | |
| if (fileSize > 1 GB) EXM_THROW(32, "Dictionary file %s is too large", fileName); /* avoid extreme cases */ | |
| DISPLAYLEVEL(2,"Dictionary %s is too large : using last %u bytes only \n", fileName, (U32)MAX_DICT_SIZE); | |
| seekResult = fseek(fileHandle, (long int)(fileSize-MAX_DICT_SIZE), SEEK_SET); /* use end of file */ | |
| if (seekResult != 0) EXM_THROW(33, "zstd: %s: %s", fileName, strerror(errno)); | |
| fileSize = MAX_DICT_SIZE; | |
| } | |
| *bufferPtr = malloc((size_t)fileSize); | |
| if (*bufferPtr==NULL) EXM_THROW(34, "zstd: %s", strerror(errno)); | |
| { size_t const readSize = fread(*bufferPtr, 1, (size_t)fileSize, fileHandle); | |
| if (readSize!=fileSize) EXM_THROW(35, "Error reading dictionary file %s", fileName); } | |
| fclose(fileHandle); | |
| return (size_t)fileSize; | |
| } | |
| #ifndef ZSTD_NOCOMPRESS | |
| /*-********************************************************************** | |
| * Compression | |
| ************************************************************************/ | |
| typedef struct { | |
| FILE* srcFile; | |
| FILE* dstFile; | |
| void* srcBuffer; | |
| size_t srcBufferSize; | |
| void* dstBuffer; | |
| size_t dstBufferSize; | |
| #ifdef ZSTD_MULTITHREAD | |
| ZSTDMT_CCtx* cctx; | |
| #else | |
| ZSTD_CStream* cctx; | |
| #endif | |
| } cRess_t; | |
| static cRess_t FIO_createCResources(const char* dictFileName, int cLevel, | |
| U64 srcSize, int srcRegFile, | |
| ZSTD_compressionParameters* comprParams) { | |
| cRess_t ress; | |
| memset(&ress, 0, sizeof(ress)); | |
| #ifdef ZSTD_MULTITHREAD | |
| ress.cctx = ZSTDMT_createCCtx(g_nbThreads); | |
| if (ress.cctx == NULL) EXM_THROW(30, "zstd: allocation error : can't create ZSTD_CStream"); | |
| if ((cLevel==ZSTD_maxCLevel()) && (g_overlapLog==FIO_OVERLAP_LOG_NOTSET)) | |
| ZSTDMT_setMTCtxParameter(ress.cctx, ZSTDMT_p_overlapSectionLog, 9); /* use complete window for overlap */ | |
| if (g_overlapLog != FIO_OVERLAP_LOG_NOTSET) | |
| ZSTDMT_setMTCtxParameter(ress.cctx, ZSTDMT_p_overlapSectionLog, g_overlapLog); | |
| #else | |
| ress.cctx = ZSTD_createCStream(); | |
| if (ress.cctx == NULL) EXM_THROW(30, "zstd: allocation error : can't create ZSTD_CStream"); | |
| #endif | |
| ress.srcBufferSize = ZSTD_CStreamInSize(); | |
| ress.srcBuffer = malloc(ress.srcBufferSize); | |
| ress.dstBufferSize = ZSTD_CStreamOutSize(); | |
| ress.dstBuffer = malloc(ress.dstBufferSize); | |
| if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(31, "zstd: allocation error : not enough memory"); | |
| /* dictionary */ | |
| { void* dictBuffer; | |
| size_t const dictBuffSize = FIO_loadFile(&dictBuffer, dictFileName); | |
| if (dictFileName && (dictBuffer==NULL)) EXM_THROW(32, "zstd: allocation error : can't create dictBuffer"); | |
| { ZSTD_parameters params = ZSTD_getParams(cLevel, srcSize, dictBuffSize); | |
| params.fParams.contentSizeFlag = srcRegFile; | |
| params.fParams.checksumFlag = g_checksumFlag; | |
| params.fParams.noDictIDFlag = !g_dictIDFlag; | |
| if (comprParams->windowLog) params.cParams.windowLog = comprParams->windowLog; | |
| if (comprParams->chainLog) params.cParams.chainLog = comprParams->chainLog; | |
| if (comprParams->hashLog) params.cParams.hashLog = comprParams->hashLog; | |
| if (comprParams->searchLog) params.cParams.searchLog = comprParams->searchLog; | |
| if (comprParams->searchLength) params.cParams.searchLength = comprParams->searchLength; | |
| if (comprParams->targetLength) params.cParams.targetLength = comprParams->targetLength; | |
| if (comprParams->strategy) params.cParams.strategy = (ZSTD_strategy)(comprParams->strategy - 1); | |
| #ifdef ZSTD_MULTITHREAD | |
| { size_t const errorCode = ZSTDMT_initCStream_advanced(ress.cctx, dictBuffer, dictBuffSize, params, srcSize); | |
| if (ZSTD_isError(errorCode)) EXM_THROW(33, "Error initializing CStream : %s", ZSTD_getErrorName(errorCode)); | |
| ZSTDMT_setMTCtxParameter(ress.cctx, ZSTDMT_p_sectionSize, g_blockSize); | |
| #else | |
| { size_t const errorCode = ZSTD_initCStream_advanced(ress.cctx, dictBuffer, dictBuffSize, params, srcSize); | |
| if (ZSTD_isError(errorCode)) EXM_THROW(33, "Error initializing CStream : %s", ZSTD_getErrorName(errorCode)); | |
| #endif | |
| } } | |
| free(dictBuffer); | |
| } | |
| return ress; | |
| } | |
| static void FIO_freeCResources(cRess_t ress) | |
| { | |
| free(ress.srcBuffer); | |
| free(ress.dstBuffer); | |
| #ifdef ZSTD_MULTITHREAD | |
| ZSTDMT_freeCCtx(ress.cctx); | |
| #else | |
| ZSTD_freeCStream(ress.cctx); /* never fails */ | |
| #endif | |
| } | |
| #ifdef ZSTD_GZCOMPRESS | |
| static unsigned long long FIO_compressGzFrame(cRess_t* ress, const char* srcFileName, U64 const srcFileSize, int compressionLevel, U64* readsize) | |
| { | |
| unsigned long long inFileSize = 0, outFileSize = 0; | |
| z_stream strm; | |
| int ret; | |
| if (compressionLevel > Z_BEST_COMPRESSION) compressionLevel = Z_BEST_COMPRESSION; | |
| strm.zalloc = Z_NULL; | |
| strm.zfree = Z_NULL; | |
| strm.opaque = Z_NULL; | |
| ret = deflateInit2(&strm, compressionLevel, Z_DEFLATED, 15 /* maxWindowLogSize */ + 16 /* gzip only */, 8, Z_DEFAULT_STRATEGY); /* see http://www.zlib.net/manual.html */ | |
| if (ret != Z_OK) EXM_THROW(71, "zstd: %s: deflateInit2 error %d \n", srcFileName, ret); | |
| strm.next_in = 0; | |
| strm.avail_in = 0; | |
| strm.next_out = (Bytef*)ress->dstBuffer; | |
| strm.avail_out = (uInt)ress->dstBufferSize; | |
| while (1) { | |
| if (strm.avail_in == 0) { | |
| size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile); | |
| if (inSize == 0) break; | |
| inFileSize += inSize; | |
| strm.next_in = (z_const unsigned char*)ress->srcBuffer; | |
| strm.avail_in = (uInt)inSize; | |
| } | |
| ret = deflate(&strm, Z_NO_FLUSH); | |
| if (ret != Z_OK) EXM_THROW(72, "zstd: %s: deflate error %d \n", srcFileName, ret); | |
| { size_t const decompBytes = ress->dstBufferSize - strm.avail_out; | |
| if (decompBytes) { | |
| if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes) EXM_THROW(73, "Write error : cannot write to output file"); | |
| outFileSize += decompBytes; | |
| strm.next_out = (Bytef*)ress->dstBuffer; | |
| strm.avail_out = (uInt)ress->dstBufferSize; | |
| } | |
| } | |
| if (!srcFileSize) DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%", (U32)(inFileSize>>20), (double)outFileSize/inFileSize*100) | |
| else DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%", (U32)(inFileSize>>20), (U32)(srcFileSize>>20), (double)outFileSize/inFileSize*100); | |
| } | |
| while (1) { | |
| ret = deflate(&strm, Z_FINISH); | |
| { size_t const decompBytes = ress->dstBufferSize - strm.avail_out; | |
| if (decompBytes) { | |
| if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes) EXM_THROW(75, "Write error : cannot write to output file"); | |
| outFileSize += decompBytes; | |
| strm.next_out = (Bytef*)ress->dstBuffer; | |
| strm.avail_out = (uInt)ress->dstBufferSize; | |
| } | |
| } | |
| if (ret == Z_STREAM_END) break; | |
| if (ret != Z_BUF_ERROR) EXM_THROW(77, "zstd: %s: deflate error %d \n", srcFileName, ret); | |
| } | |
| ret = deflateEnd(&strm); | |
| if (ret != Z_OK) EXM_THROW(79, "zstd: %s: deflateEnd error %d \n", srcFileName, ret); | |
| *readsize = inFileSize; | |
| return outFileSize; | |
| } | |
| #endif | |
| /*! FIO_compressFilename_internal() : | |
| * same as FIO_compressFilename_extRess(), with `ress.desFile` already opened. | |
| * @return : 0 : compression completed correctly, | |
| * 1 : missing or pb opening srcFileName | |
| */ | |
| static int FIO_compressFilename_internal(cRess_t ress, | |
| const char* dstFileName, const char* srcFileName, int compressionLevel) | |
| { | |
| FILE* const srcFile = ress.srcFile; | |
| FILE* const dstFile = ress.dstFile; | |
| U64 readsize = 0; | |
| U64 compressedfilesize = 0; | |
| U64 const fileSize = UTIL_getFileSize(srcFileName); | |
| if (g_compressionType) { | |
| #ifdef ZSTD_GZCOMPRESS | |
| compressedfilesize = FIO_compressGzFrame(&ress, srcFileName, fileSize, compressionLevel, &readsize); | |
| #else | |
| (void)compressionLevel; | |
| EXM_THROW(20, "zstd: %s: file cannot be compressed as gzip (zstd compiled without ZSTD_GZCOMPRESS) -- ignored \n", srcFileName); | |
| #endif | |
| goto finish; | |
| } | |
| /* init */ | |
| #ifdef ZSTD_MULTITHREAD | |
| { size_t const resetError = ZSTDMT_resetCStream(ress.cctx, fileSize); | |
| #else | |
| { size_t const resetError = ZSTD_resetCStream(ress.cctx, fileSize); | |
| #endif | |
| if (ZSTD_isError(resetError)) EXM_THROW(21, "Error initializing compression : %s", ZSTD_getErrorName(resetError)); | |
| } | |
| /* Main compression loop */ | |
| while (1) { | |
| /* Fill input Buffer */ | |
| size_t const inSize = fread(ress.srcBuffer, (size_t)1, ress.srcBufferSize, srcFile); | |
| if (inSize==0) break; | |
| readsize += inSize; | |
| { ZSTD_inBuffer inBuff = { ress.srcBuffer, inSize, 0 }; | |
| while (inBuff.pos != inBuff.size) { /* note : is there any possibility of endless loop ? for example, if outBuff is not large enough ? */ | |
| ZSTD_outBuffer outBuff= { ress.dstBuffer, ress.dstBufferSize, 0 }; | |
| #ifdef ZSTD_MULTITHREAD | |
| size_t const result = ZSTDMT_compressStream(ress.cctx, &outBuff, &inBuff); | |
| #else | |
| size_t const result = ZSTD_compressStream(ress.cctx, &outBuff, &inBuff); | |
| #endif | |
| if (ZSTD_isError(result)) EXM_THROW(23, "Compression error : %s ", ZSTD_getErrorName(result)); | |
| /* Write compressed stream */ | |
| if (outBuff.pos) { | |
| size_t const sizeCheck = fwrite(ress.dstBuffer, 1, outBuff.pos, dstFile); | |
| if (sizeCheck!=outBuff.pos) EXM_THROW(25, "Write error : cannot write compressed block into %s", dstFileName); | |
| compressedfilesize += outBuff.pos; | |
| } } } | |
| #ifdef ZSTD_MULTITHREAD | |
| if (!fileSize) DISPLAYUPDATE(2, "\rRead : %u MB", (U32)(readsize>>20)) | |
| else DISPLAYUPDATE(2, "\rRead : %u / %u MB", (U32)(readsize>>20), (U32)(fileSize>>20)); | |
| #else | |
| if (!fileSize) DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%", (U32)(readsize>>20), (double)compressedfilesize/readsize*100) | |
| else DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%", (U32)(readsize>>20), (U32)(fileSize>>20), (double)compressedfilesize/readsize*100); | |
| #endif | |
| } | |
| /* End of Frame */ | |
| { size_t result = 1; | |
| while (result!=0) { /* note : is there any possibility of endless loop ? */ | |
| ZSTD_outBuffer outBuff = { ress.dstBuffer, ress.dstBufferSize, 0 }; | |
| #ifdef ZSTD_MULTITHREAD | |
| result = ZSTDMT_endStream(ress.cctx, &outBuff); | |
| #else | |
| result = ZSTD_endStream(ress.cctx, &outBuff); | |
| #endif | |
| if (ZSTD_isError(result)) EXM_THROW(26, "Compression error during frame end : %s", ZSTD_getErrorName(result)); | |
| { size_t const sizeCheck = fwrite(ress.dstBuffer, 1, outBuff.pos, dstFile); | |
| if (sizeCheck!=outBuff.pos) EXM_THROW(27, "Write error : cannot write frame end into %s", dstFileName); } | |
| compressedfilesize += outBuff.pos; | |
| } | |
| } | |
| finish: | |
| /* Status */ | |
| DISPLAYLEVEL(2, "\r%79s\r", ""); | |
| DISPLAYLEVEL(2,"%-20s :%6.2f%% (%6llu => %6llu bytes, %s) \n", srcFileName, | |
| (double)compressedfilesize/(readsize+(!readsize) /* avoid div by zero */ )*100, | |
| (unsigned long long)readsize, (unsigned long long) compressedfilesize, | |
| dstFileName); | |
| return 0; | |
| } | |
| /*! FIO_compressFilename_srcFile() : | |
| * note : ress.destFile already opened | |
| * @return : 0 : compression completed correctly, | |
| * 1 : missing or pb opening srcFileName | |
| */ | |
| static int FIO_compressFilename_srcFile(cRess_t ress, | |
| const char* dstFileName, const char* srcFileName, int compressionLevel) | |
| { | |
| int result; | |
| /* File check */ | |
| if (UTIL_isDirectory(srcFileName)) { | |
| DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName); | |
| return 1; | |
| } | |
| ress.srcFile = FIO_openSrcFile(srcFileName); | |
| if (!ress.srcFile) return 1; /* srcFile could not be opened */ | |
| result = FIO_compressFilename_internal(ress, dstFileName, srcFileName, compressionLevel); | |
| fclose(ress.srcFile); | |
| if (g_removeSrcFile /* --rm */ && !result && strcmp(srcFileName, stdinmark)) { | |
| if (remove(srcFileName)) | |
| EXM_THROW(1, "zstd: %s: %s", srcFileName, strerror(errno)); | |
| } | |
| return result; | |
| } | |
| /*! FIO_compressFilename_dstFile() : | |
| * @return : 0 : compression completed correctly, | |
| * 1 : pb | |
| */ | |
| static int FIO_compressFilename_dstFile(cRess_t ress, | |
| const char* dstFileName, const char* srcFileName, int compressionLevel) | |
| { | |
| int result; | |
| stat_t statbuf; | |
| int stat_result = 0; | |
| ress.dstFile = FIO_openDstFile(dstFileName); | |
| if (ress.dstFile==NULL) return 1; /* could not open dstFileName */ | |
| if (strcmp (srcFileName, stdinmark) && UTIL_getFileStat(srcFileName, &statbuf)) stat_result = 1; | |
| result = FIO_compressFilename_srcFile(ress, dstFileName, srcFileName, compressionLevel); | |
| if (fclose(ress.dstFile)) { DISPLAYLEVEL(1, "zstd: %s: %s \n", dstFileName, strerror(errno)); result=1; } /* error closing dstFile */ | |
| if (result!=0) { if (remove(dstFileName)) EXM_THROW(1, "zstd: %s: %s", dstFileName, strerror(errno)); } /* remove operation artefact */ | |
| else if (strcmp (dstFileName, stdoutmark) && stat_result) UTIL_setFileStat(dstFileName, &statbuf); | |
| return result; | |
| } | |
| int FIO_compressFilename(const char* dstFileName, const char* srcFileName, | |
| const char* dictFileName, int compressionLevel, ZSTD_compressionParameters* comprParams) | |
| { | |
| clock_t const start = clock(); | |
| U64 const srcSize = UTIL_getFileSize(srcFileName); | |
| int const regFile = UTIL_isRegFile(srcFileName); | |
| cRess_t const ress = FIO_createCResources(dictFileName, compressionLevel, srcSize, regFile, comprParams); | |
| int const result = FIO_compressFilename_dstFile(ress, dstFileName, srcFileName, compressionLevel); | |
| double const seconds = (double)(clock() - start) / CLOCKS_PER_SEC; | |
| DISPLAYLEVEL(4, "Completed in %.2f sec \n", seconds); | |
| FIO_freeCResources(ress); | |
| return result; | |
| } | |
| int FIO_compressMultipleFilenames(const char** inFileNamesTable, unsigned nbFiles, | |
| const char* suffix, | |
| const char* dictFileName, int compressionLevel, | |
| ZSTD_compressionParameters* comprParams) | |
| { | |
| int missed_files = 0; | |
| size_t dfnSize = FNSPACE; | |
| char* dstFileName = (char*)malloc(FNSPACE); | |
| size_t const suffixSize = suffix ? strlen(suffix) : 0; | |
| U64 const srcSize = (nbFiles != 1) ? 0 : UTIL_getFileSize(inFileNamesTable[0]) ; | |
| int const regFile = (nbFiles != 1) ? 0 : UTIL_isRegFile(inFileNamesTable[0]); | |
| cRess_t ress = FIO_createCResources(dictFileName, compressionLevel, srcSize, regFile, comprParams); | |
| /* init */ | |
| if (dstFileName==NULL) EXM_THROW(27, "FIO_compressMultipleFilenames : allocation error for dstFileName"); | |
| if (suffix == NULL) EXM_THROW(28, "FIO_compressMultipleFilenames : dst unknown"); /* should never happen */ | |
| /* loop on each file */ | |
| if (!strcmp(suffix, stdoutmark)) { | |
| unsigned u; | |
| ress.dstFile = stdout; | |
| SET_BINARY_MODE(stdout); | |
| for (u=0; u<nbFiles; u++) | |
| missed_files += FIO_compressFilename_srcFile(ress, stdoutmark, inFileNamesTable[u], compressionLevel); | |
| if (fclose(ress.dstFile)) EXM_THROW(29, "Write error : cannot properly close stdout"); | |
| } else { | |
| unsigned u; | |
| for (u=0; u<nbFiles; u++) { | |
| size_t ifnSize = strlen(inFileNamesTable[u]); | |
| if (dfnSize <= ifnSize+suffixSize+1) { free(dstFileName); dfnSize = ifnSize + 20; dstFileName = (char*)malloc(dfnSize); } | |
| strcpy(dstFileName, inFileNamesTable[u]); | |
| strcat(dstFileName, suffix); | |
| missed_files += FIO_compressFilename_dstFile(ress, dstFileName, inFileNamesTable[u], compressionLevel); | |
| } } | |
| /* Close & Free */ | |
| FIO_freeCResources(ress); | |
| free(dstFileName); | |
| return missed_files; | |
| } | |
| #endif /* #ifndef ZSTD_NOCOMPRESS */ | |
| #ifndef ZSTD_NODECOMPRESS | |
| /* ************************************************************************** | |
| * Decompression | |
| ****************************************************************************/ | |
| typedef struct { | |
| void* srcBuffer; | |
| size_t srcBufferLoaded; | |
| size_t srcBufferSize; | |
| void* dstBuffer; | |
| size_t dstBufferSize; | |
| ZSTD_DStream* dctx; | |
| FILE* dstFile; | |
| } dRess_t; | |
| static dRess_t FIO_createDResources(const char* dictFileName) | |
| { | |
| dRess_t ress; | |
| memset(&ress, 0, sizeof(ress)); | |
| /* Allocation */ | |
| ress.dctx = ZSTD_createDStream(); | |
| if (ress.dctx==NULL) EXM_THROW(60, "Can't create ZSTD_DStream"); | |
| ZSTD_setDStreamParameter(ress.dctx, DStream_p_maxWindowSize, g_memLimit); | |
| ress.srcBufferSize = ZSTD_DStreamInSize(); | |
| ress.srcBuffer = malloc(ress.srcBufferSize); | |
| ress.dstBufferSize = ZSTD_DStreamOutSize(); | |
| ress.dstBuffer = malloc(ress.dstBufferSize); | |
| if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(61, "Allocation error : not enough memory"); | |
| /* dictionary */ | |
| { void* dictBuffer; | |
| size_t const dictBufferSize = FIO_loadFile(&dictBuffer, dictFileName); | |
| size_t const initError = ZSTD_initDStream_usingDict(ress.dctx, dictBuffer, dictBufferSize); | |
| if (ZSTD_isError(initError)) EXM_THROW(61, "ZSTD_initDStream_usingDict error : %s", ZSTD_getErrorName(initError)); | |
| free(dictBuffer); | |
| } | |
| return ress; | |
| } | |
| static void FIO_freeDResources(dRess_t ress) | |
| { | |
| size_t const errorCode = ZSTD_freeDStream(ress.dctx); | |
| if (ZSTD_isError(errorCode)) EXM_THROW(69, "Error : can't free ZSTD_DStream context resource : %s", ZSTD_getErrorName(errorCode)); | |
| free(ress.srcBuffer); | |
| free(ress.dstBuffer); | |
| } | |
| /** FIO_fwriteSparse() : | |
| * @return : storedSkips, to be provided to next call to FIO_fwriteSparse() of LZ4IO_fwriteSparseEnd() */ | |
| static unsigned FIO_fwriteSparse(FILE* file, const void* buffer, size_t bufferSize, unsigned storedSkips) | |
| { | |
| const size_t* const bufferT = (const size_t*)buffer; /* Buffer is supposed malloc'ed, hence aligned on size_t */ | |
| size_t bufferSizeT = bufferSize / sizeof(size_t); | |
| const size_t* const bufferTEnd = bufferT + bufferSizeT; | |
| const size_t* ptrT = bufferT; | |
| static const size_t segmentSizeT = (32 KB) / sizeof(size_t); /* 0-test re-attempted every 32 KB */ | |
| if (!g_sparseFileSupport) { /* normal write */ | |
| size_t const sizeCheck = fwrite(buffer, 1, bufferSize, file); | |
| if (sizeCheck != bufferSize) EXM_THROW(70, "Write error : cannot write decoded block"); | |
| return 0; | |
| } | |
| /* avoid int overflow */ | |
| if (storedSkips > 1 GB) { | |
| int const seekResult = LONG_SEEK(file, 1 GB, SEEK_CUR); | |
| if (seekResult != 0) EXM_THROW(71, "1 GB skip error (sparse file support)"); | |
| storedSkips -= 1 GB; | |
| } | |
| while (ptrT < bufferTEnd) { | |
| size_t seg0SizeT = segmentSizeT; | |
| size_t nb0T; | |
| /* count leading zeros */ | |
| if (seg0SizeT > bufferSizeT) seg0SizeT = bufferSizeT; | |
| bufferSizeT -= seg0SizeT; | |
| for (nb0T=0; (nb0T < seg0SizeT) && (ptrT[nb0T] == 0); nb0T++) ; | |
| storedSkips += (unsigned)(nb0T * sizeof(size_t)); | |
| if (nb0T != seg0SizeT) { /* not all 0s */ | |
| int const seekResult = LONG_SEEK(file, storedSkips, SEEK_CUR); | |
| if (seekResult) EXM_THROW(72, "Sparse skip error ; try --no-sparse"); | |
| storedSkips = 0; | |
| seg0SizeT -= nb0T; | |
| ptrT += nb0T; | |
| { size_t const sizeCheck = fwrite(ptrT, sizeof(size_t), seg0SizeT, file); | |
| if (sizeCheck != seg0SizeT) EXM_THROW(73, "Write error : cannot write decoded block"); | |
| } } | |
| ptrT += seg0SizeT; | |
| } | |
| { static size_t const maskT = sizeof(size_t)-1; | |
| if (bufferSize & maskT) { /* size not multiple of sizeof(size_t) : implies end of block */ | |
| const char* const restStart = (const char*)bufferTEnd; | |
| const char* restPtr = restStart; | |
| size_t restSize = bufferSize & maskT; | |
| const char* const restEnd = restStart + restSize; | |
| for ( ; (restPtr < restEnd) && (*restPtr == 0); restPtr++) ; | |
| storedSkips += (unsigned) (restPtr - restStart); | |
| if (restPtr != restEnd) { | |
| int seekResult = LONG_SEEK(file, storedSkips, SEEK_CUR); | |
| if (seekResult) EXM_THROW(74, "Sparse skip error ; try --no-sparse"); | |
| storedSkips = 0; | |
| { size_t const sizeCheck = fwrite(restPtr, 1, restEnd - restPtr, file); | |
| if (sizeCheck != (size_t)(restEnd - restPtr)) EXM_THROW(75, "Write error : cannot write decoded end of block"); | |
| } } } } | |
| return storedSkips; | |
| } | |
| static void FIO_fwriteSparseEnd(FILE* file, unsigned storedSkips) | |
| { | |
| if (storedSkips-->0) { /* implies g_sparseFileSupport>0 */ | |
| int const seekResult = LONG_SEEK(file, storedSkips, SEEK_CUR); | |
| if (seekResult != 0) EXM_THROW(69, "Final skip error (sparse file)\n"); | |
| { const char lastZeroByte[1] = { 0 }; | |
| size_t const sizeCheck = fwrite(lastZeroByte, 1, 1, file); | |
| if (sizeCheck != 1) EXM_THROW(69, "Write error : cannot write last zero\n"); | |
| } } | |
| } | |
| /** FIO_passThrough() : just copy input into output, for compatibility with gzip -df mode | |
| @return : 0 (no error) */ | |
| static unsigned FIO_passThrough(FILE* foutput, FILE* finput, void* buffer, size_t bufferSize, size_t alreadyLoaded) | |
| { | |
| size_t const blockSize = MIN(64 KB, bufferSize); | |
| size_t readFromInput = 1; | |
| unsigned storedSkips = 0; | |
| /* assumption : ress->srcBufferLoaded bytes already loaded and stored within buffer */ | |
| { size_t const sizeCheck = fwrite(buffer, 1, alreadyLoaded, foutput); | |
| if (sizeCheck != alreadyLoaded) EXM_THROW(50, "Pass-through write error"); } | |
| while (readFromInput) { | |
| readFromInput = fread(buffer, 1, blockSize, finput); | |
| storedSkips = FIO_fwriteSparse(foutput, buffer, readFromInput, storedSkips); | |
| } | |
| FIO_fwriteSparseEnd(foutput, storedSkips); | |
| return 0; | |
| } | |
| /** FIO_decompressFrame() : | |
| @return : size of decoded frame | |
| */ | |
| unsigned long long FIO_decompressFrame(dRess_t* ress, | |
| FILE* finput, | |
| U64 alreadyDecoded) | |
| { | |
| U64 frameSize = 0; | |
| U32 storedSkips = 0; | |
| ZSTD_resetDStream(ress->dctx); | |
| /* Header loading (optional, saves one loop) */ | |
| { size_t const toRead = 9; | |
| if (ress->srcBufferLoaded < toRead) | |
| ress->srcBufferLoaded += fread(((char*)ress->srcBuffer) + ress->srcBufferLoaded, 1, toRead - ress->srcBufferLoaded, finput); | |
| } | |
| /* Main decompression Loop */ | |
| while (1) { | |
| ZSTD_inBuffer inBuff = { ress->srcBuffer, ress->srcBufferLoaded, 0 }; | |
| ZSTD_outBuffer outBuff= { ress->dstBuffer, ress->dstBufferSize, 0 }; | |
| size_t const readSizeHint = ZSTD_decompressStream(ress->dctx, &outBuff, &inBuff); | |
| if (ZSTD_isError(readSizeHint)) EXM_THROW(36, "Decoding error : %s", ZSTD_getErrorName(readSizeHint)); | |
| /* Write block */ | |
| storedSkips = FIO_fwriteSparse(ress->dstFile, ress->dstBuffer, outBuff.pos, storedSkips); | |
| frameSize += outBuff.pos; | |
| DISPLAYUPDATE(2, "\rDecoded : %u MB... ", (U32)((alreadyDecoded+frameSize)>>20) ); | |
| if (inBuff.pos > 0) { | |
| memmove(ress->srcBuffer, (char*)ress->srcBuffer + inBuff.pos, inBuff.size - inBuff.pos); | |
| ress->srcBufferLoaded -= inBuff.pos; | |
| } | |
| if (readSizeHint == 0) break; /* end of frame */ | |
| if (inBuff.size != inBuff.pos) EXM_THROW(37, "Decoding error : should consume entire input"); | |
| /* Fill input buffer */ | |
| { size_t const toRead = MIN(readSizeHint, ress->srcBufferSize); /* support large skippable frames */ | |
| if (ress->srcBufferLoaded < toRead) | |
| ress->srcBufferLoaded += fread(((char*)ress->srcBuffer) + ress->srcBufferLoaded, 1, toRead - ress->srcBufferLoaded, finput); | |
| if (ress->srcBufferLoaded < toRead) EXM_THROW(39, "Read error : premature end"); | |
| } } | |
| FIO_fwriteSparseEnd(ress->dstFile, storedSkips); | |
| return frameSize; | |
| } | |
| #ifdef ZSTD_GZDECOMPRESS | |
| static unsigned long long FIO_decompressGzFrame(dRess_t* ress, FILE* srcFile, const char* srcFileName) | |
| { | |
| unsigned long long outFileSize = 0; | |
| z_stream strm; | |
| int ret; | |
| strm.zalloc = Z_NULL; | |
| strm.zfree = Z_NULL; | |
| strm.opaque = Z_NULL; | |
| strm.next_in = 0; | |
| strm.avail_in = 0; | |
| if (inflateInit2(&strm, 15 /* maxWindowLogSize */ + 16 /* gzip only */) != Z_OK) return 0; /* see http://www.zlib.net/manual.html */ | |
| strm.next_out = (Bytef*)ress->dstBuffer; | |
| strm.avail_out = (uInt)ress->dstBufferSize; | |
| strm.avail_in = (uInt)ress->srcBufferLoaded; | |
| strm.next_in = (z_const unsigned char*)ress->srcBuffer; | |
| for ( ; ; ) { | |
| if (strm.avail_in == 0) { | |
| ress->srcBufferLoaded = fread(ress->srcBuffer, 1, ress->srcBufferSize, srcFile); | |
| if (ress->srcBufferLoaded == 0) break; | |
| strm.next_in = (z_const unsigned char*)ress->srcBuffer; | |
| strm.avail_in = (uInt)ress->srcBufferLoaded; | |
| } | |
| ret = inflate(&strm, Z_NO_FLUSH); | |
| if (ret != Z_OK && ret != Z_STREAM_END) { DISPLAY("zstd: %s: inflate error %d \n", srcFileName, ret); return 0; } | |
| { size_t const decompBytes = ress->dstBufferSize - strm.avail_out; | |
| if (decompBytes) { | |
| if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes) EXM_THROW(31, "Write error : cannot write to output file"); | |
| outFileSize += decompBytes; | |
| strm.next_out = (Bytef*)ress->dstBuffer; | |
| strm.avail_out = (uInt)ress->dstBufferSize; | |
| } | |
| } | |
| if (ret == Z_STREAM_END) break; | |
| } | |
| if (strm.avail_in > 0) memmove(ress->srcBuffer, strm.next_in, strm.avail_in); | |
| ress->srcBufferLoaded = strm.avail_in; | |
| ret = inflateEnd(&strm); | |
| if (ret != Z_OK) EXM_THROW(32, "zstd: %s: inflateEnd error %d \n", srcFileName, ret); | |
| return outFileSize; | |
| } | |
| #endif | |
| /** FIO_decompressSrcFile() : | |
| Decompression `srcFileName` into `ress.dstFile` | |
| @return : 0 : OK | |
| 1 : operation not started | |
| */ | |
| static int FIO_decompressSrcFile(dRess_t ress, const char* dstFileName, const char* srcFileName) | |
| { | |
| FILE* srcFile; | |
| unsigned readSomething = 0; | |
| unsigned long long filesize = 0; | |
| if (UTIL_isDirectory(srcFileName)) { | |
| DISPLAYLEVEL(1, "zstd: %s is a directory -- ignored \n", srcFileName); | |
| return 1; | |
| } | |
| srcFile = FIO_openSrcFile(srcFileName); | |
| if (srcFile==NULL) return 1; | |
| /* for each frame */ | |
| for ( ; ; ) { | |
| /* check magic number -> version */ | |
| size_t const toRead = 4; | |
| const BYTE* buf = (const BYTE*)ress.srcBuffer; | |
| if (ress.srcBufferLoaded < toRead) | |
| ress.srcBufferLoaded += fread((char*)ress.srcBuffer + ress.srcBufferLoaded, (size_t)1, toRead - ress.srcBufferLoaded, srcFile); | |
| if (ress.srcBufferLoaded==0) { | |
| if (readSomething==0) { DISPLAY("zstd: %s: unexpected end of file \n", srcFileName); fclose(srcFile); return 1; } /* srcFileName is empty */ | |
| break; /* no more input */ | |
| } | |
| readSomething = 1; /* there is at least >= 4 bytes in srcFile */ | |
| if (ress.srcBufferLoaded < toRead) { DISPLAY("zstd: %s: unknown header \n", srcFileName); fclose(srcFile); return 1; } /* srcFileName is empty */ | |
| if (buf[0] == 31 && buf[1] == 139) { /* gz header */ | |
| #ifdef ZSTD_GZDECOMPRESS | |
| unsigned long long const result = FIO_decompressGzFrame(&ress, srcFile, srcFileName); | |
| if (result == 0) return 1; | |
| filesize += result; | |
| #else | |
| DISPLAYLEVEL(1, "zstd: %s: gzip file cannot be uncompressed (zstd compiled without ZSTD_GZDECOMPRESS) -- ignored \n", srcFileName); | |
| return 1; | |
| #endif | |
| } else { | |
| if (!ZSTD_isFrame(ress.srcBuffer, toRead)) { | |
| if ((g_overwrite) && !strcmp (dstFileName, stdoutmark)) { /* pass-through mode */ | |
| unsigned const result = FIO_passThrough(ress.dstFile, srcFile, ress.srcBuffer, ress.srcBufferSize, ress.srcBufferLoaded); | |
| if (fclose(srcFile)) EXM_THROW(32, "zstd: %s close error", srcFileName); /* error should never happen */ | |
| return result; | |
| } else { | |
| DISPLAYLEVEL(1, "zstd: %s: not in zstd format \n", srcFileName); | |
| fclose(srcFile); | |
| return 1; | |
| } } | |
| filesize += FIO_decompressFrame(&ress, srcFile, filesize); | |
| } | |
| } | |
| /* Final Status */ | |
| DISPLAYLEVEL(2, "\r%79s\r", ""); | |
| DISPLAYLEVEL(2, "%-20s: %llu bytes \n", srcFileName, filesize); | |
| /* Close file */ | |
| if (fclose(srcFile)) EXM_THROW(33, "zstd: %s close error", srcFileName); /* error should never happen */ | |
| if (g_removeSrcFile /* --rm */ && strcmp(srcFileName, stdinmark)) { if (remove(srcFileName)) EXM_THROW(34, "zstd: %s: %s", srcFileName, strerror(errno)); }; | |
| return 0; | |
| } | |
| /** FIO_decompressFile_extRess() : | |
| decompress `srcFileName` into `dstFileName` | |
| @return : 0 : OK | |
| 1 : operation aborted (src not available, dst already taken, etc.) | |
| */ | |
| static int FIO_decompressDstFile(dRess_t ress, | |
| const char* dstFileName, const char* srcFileName) | |
| { | |
| int result; | |
| stat_t statbuf; | |
| int stat_result = 0; | |
| ress.dstFile = FIO_openDstFile(dstFileName); | |
| if (ress.dstFile==0) return 1; | |
| if (strcmp (srcFileName, stdinmark) && UTIL_getFileStat(srcFileName, &statbuf)) stat_result = 1; | |
| result = FIO_decompressSrcFile(ress, dstFileName, srcFileName); | |
| if (fclose(ress.dstFile)) EXM_THROW(38, "Write error : cannot properly close %s", dstFileName); | |
| if ( (result != 0) | |
| && strcmp(dstFileName, nulmark) /* special case : don't remove() /dev/null (#316) */ | |
| && remove(dstFileName) ) | |
| result=1; /* don't do anything special if remove() fails */ | |
| else if (strcmp (dstFileName, stdoutmark) && stat_result) UTIL_setFileStat(dstFileName, &statbuf); | |
| return result; | |
| } | |
| int FIO_decompressFilename(const char* dstFileName, const char* srcFileName, | |
| const char* dictFileName) | |
| { | |
| int missingFiles = 0; | |
| dRess_t ress = FIO_createDResources(dictFileName); | |
| missingFiles += FIO_decompressDstFile(ress, dstFileName, srcFileName); | |
| FIO_freeDResources(ress); | |
| return missingFiles; | |
| } | |
| #define MAXSUFFIXSIZE 8 | |
| int FIO_decompressMultipleFilenames(const char** srcNamesTable, unsigned nbFiles, | |
| const char* suffix, | |
| const char* dictFileName) | |
| { | |
| int skippedFiles = 0; | |
| int missingFiles = 0; | |
| dRess_t ress = FIO_createDResources(dictFileName); | |
| if (suffix==NULL) EXM_THROW(70, "zstd: decompression: unknown dst"); /* should never happen */ | |
| if (!strcmp(suffix, stdoutmark) || !strcmp(suffix, nulmark)) { /* special cases : -c or -t */ | |
| unsigned u; | |
| ress.dstFile = FIO_openDstFile(suffix); | |
| if (ress.dstFile == 0) EXM_THROW(71, "cannot open %s", suffix); | |
| for (u=0; u<nbFiles; u++) | |
| missingFiles += FIO_decompressSrcFile(ress, suffix, srcNamesTable[u]); | |
| if (fclose(ress.dstFile)) EXM_THROW(72, "Write error : cannot properly close stdout"); | |
| } else { | |
| size_t const suffixSize = strlen(suffix); | |
| size_t const gzipSuffixSize = strlen(GZ_EXTENSION); | |
| size_t dfnSize = FNSPACE; | |
| unsigned u; | |
| char* dstFileName = (char*)malloc(FNSPACE); | |
| if (dstFileName==NULL) EXM_THROW(73, "not enough memory for dstFileName"); | |
| for (u=0; u<nbFiles; u++) { /* create dstFileName */ | |
| const char* const srcFileName = srcNamesTable[u]; | |
| size_t const sfnSize = strlen(srcFileName); | |
| const char* const suffixPtr = srcFileName + sfnSize - suffixSize; | |
| const char* const gzipSuffixPtr = srcFileName + sfnSize - gzipSuffixSize; | |
| if (dfnSize+suffixSize <= sfnSize+1) { | |
| free(dstFileName); | |
| dfnSize = sfnSize + 20; | |
| dstFileName = (char*)malloc(dfnSize); | |
| if (dstFileName==NULL) EXM_THROW(74, "not enough memory for dstFileName"); | |
| } | |
| if (sfnSize <= suffixSize || strcmp(suffixPtr, suffix) != 0) { | |
| if (sfnSize <= gzipSuffixSize || strcmp(gzipSuffixPtr, GZ_EXTENSION) != 0) { | |
| DISPLAYLEVEL(1, "zstd: %s: unknown suffix (%s/%s expected) -- ignored \n", srcFileName, suffix, GZ_EXTENSION); | |
| skippedFiles++; | |
| continue; | |
| } else { | |
| memcpy(dstFileName, srcFileName, sfnSize - gzipSuffixSize); | |
| dstFileName[sfnSize-gzipSuffixSize] = '\0'; | |
| } | |
| } else { | |
| memcpy(dstFileName, srcFileName, sfnSize - suffixSize); | |
| dstFileName[sfnSize-suffixSize] = '\0'; | |
| } | |
| missingFiles += FIO_decompressDstFile(ress, dstFileName, srcFileName); | |
| } | |
| free(dstFileName); | |
| } | |
| FIO_freeDResources(ress); | |
| return missingFiles + skippedFiles; | |
| } | |
| #endif /* #ifndef ZSTD_NODECOMPRESS */ |