diff options
Diffstat (limited to 'programs/fileio.c')
| -rw-r--r-- | programs/fileio.c | 1200 |
1 files changed, 1200 insertions, 0 deletions
diff --git a/programs/fileio.c b/programs/fileio.c new file mode 100644 index 000000000000..e6481f1fa726 --- /dev/null +++ b/programs/fileio.c @@ -0,0 +1,1200 @@ +/** + * 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 +#if defined(ZSTD_LZMACOMPRESS) || defined(ZSTD_LZMADECOMPRESS) +# include <lzma.h> +#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 + + +/*-************************************* +* 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 + + +#ifdef ZSTD_LZMACOMPRESS +static unsigned long long FIO_compressLzmaFrame(cRess_t* ress, const char* srcFileName, U64 const srcFileSize, int compressionLevel, U64* readsize, int plain_lzma) +{ + unsigned long long inFileSize = 0, outFileSize = 0; + lzma_stream strm = LZMA_STREAM_INIT; + lzma_action action = LZMA_RUN; + lzma_ret ret; + + if (compressionLevel < 0) compressionLevel = 0; + if (compressionLevel > 9) compressionLevel = 9; + + if (plain_lzma) { + lzma_options_lzma opt_lzma; + if (lzma_lzma_preset(&opt_lzma, compressionLevel)) EXM_THROW(71, "zstd: %s: lzma_lzma_preset error", srcFileName); + ret = lzma_alone_encoder(&strm, &opt_lzma); /* LZMA */ + if (ret != LZMA_OK) EXM_THROW(71, "zstd: %s: lzma_alone_encoder error %d", srcFileName, ret); + } else { + ret = lzma_easy_encoder(&strm, compressionLevel, LZMA_CHECK_CRC64); /* XZ */ + if (ret != LZMA_OK) EXM_THROW(71, "zstd: %s: lzma_easy_encoder error %d", srcFileName, ret); + } + + strm.next_in = 0; + strm.avail_in = 0; + strm.next_out = ress->dstBuffer; + strm.avail_out = ress->dstBufferSize; + + while (1) { + if (strm.avail_in == 0) { + size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile); + if (inSize == 0) action = LZMA_FINISH; + inFileSize += inSize; + strm.next_in = ress->srcBuffer; + strm.avail_in = inSize; + } + + ret = lzma_code(&strm, action); + + if (ret != LZMA_OK && ret != LZMA_STREAM_END) EXM_THROW(72, "zstd: %s: lzma_code encoding error %d", srcFileName, ret); + { size_t const compBytes = ress->dstBufferSize - strm.avail_out; + if (compBytes) { + if (fwrite(ress->dstBuffer, 1, compBytes, ress->dstFile) != compBytes) EXM_THROW(73, "Write error : cannot write to output file"); + outFileSize += compBytes; + strm.next_out = ress->dstBuffer; + strm.avail_out = 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); + if (ret == LZMA_STREAM_END) break; + } + + lzma_end(&strm); + *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); + + switch (g_compressionType) { + case FIO_zstdCompression: + break; + case FIO_gzipCompression: +#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; + case FIO_xzCompression: + case FIO_lzmaCompression: +#ifdef ZSTD_LZMACOMPRESS + compressedfilesize = FIO_compressLzmaFrame(&ress, srcFileName, fileSize, compressionLevel, &readsize, g_compressionType==FIO_lzmaCompression); +#else + (void)compressionLevel; + EXM_THROW(20, "zstd: %s: file cannot be compressed as xz/lzma (zstd compiled without ZSTD_LZMACOMPRESS) -- 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)"); + { 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"); + } } +} + + +/** 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 flush = Z_NO_FLUSH; + 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) flush = Z_FINISH; + strm.next_in = (z_const unsigned char*)ress->srcBuffer; + strm.avail_in = (uInt)ress->srcBufferLoaded; + } + ret = inflate(&strm, flush); + if (ret == Z_BUF_ERROR) EXM_THROW(39, "zstd: %s: premature end", srcFileName); + 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", srcFileName, ret); + return outFileSize; +} +#endif + + +#ifdef ZSTD_LZMADECOMPRESS +static unsigned long long FIO_decompressLzmaFrame(dRess_t* ress, FILE* srcFile, const char* srcFileName, int plain_lzma) +{ + unsigned long long outFileSize = 0; + lzma_stream strm = LZMA_STREAM_INIT; + lzma_action action = LZMA_RUN; + lzma_ret ret; + + strm.next_in = 0; + strm.avail_in = 0; + if (plain_lzma) { + ret = lzma_alone_decoder(&strm, UINT64_MAX); /* LZMA */ + } else { + ret = lzma_stream_decoder(&strm, UINT64_MAX, 0); /* XZ */ + } + + if (ret != LZMA_OK) EXM_THROW(71, "zstd: %s: lzma_alone_decoder/lzma_stream_decoder error %d", srcFileName, ret); + + strm.next_out = ress->dstBuffer; + strm.avail_out = ress->dstBufferSize; + strm.avail_in = ress->srcBufferLoaded; + strm.next_in = ress->srcBuffer; + + for ( ; ; ) { + if (strm.avail_in == 0) { + ress->srcBufferLoaded = fread(ress->srcBuffer, 1, ress->srcBufferSize, srcFile); + if (ress->srcBufferLoaded == 0) action = LZMA_FINISH; + strm.next_in = ress->srcBuffer; + strm.avail_in = ress->srcBufferLoaded; + } + ret = lzma_code(&strm, action); + + if (ret == LZMA_BUF_ERROR) EXM_THROW(39, "zstd: %s: premature end", srcFileName); + if (ret != LZMA_OK && ret != LZMA_STREAM_END) { DISPLAY("zstd: %s: lzma_code decoding 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 = ress->dstBuffer; + strm.avail_out = ress->dstBufferSize; + } + } + if (ret == LZMA_STREAM_END) break; + } + + if (strm.avail_in > 0) memmove(ress->srcBuffer, strm.next_in, strm.avail_in); + ress->srcBufferLoaded = strm.avail_in; + lzma_end(&strm); + 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 magic number */ +#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 ((buf[0] == 0xFD && buf[1] == 0x37) /* xz magic number */ + || (buf[0] == 0x5D && buf[1] == 0x00)) { /* lzma header (no magic number) */ +#ifdef ZSTD_LZMADECOMPRESS + unsigned long long const result = FIO_decompressLzmaFrame(&ress, srcFile, srcFileName, buf[0] != 0xFD); + if (result == 0) return 1; + filesize += result; +#else + DISPLAYLEVEL(1, "zstd: %s: xz/lzma file cannot be uncompressed (zstd compiled without ZSTD_LZMADECOMPRESS) -- 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 suffixSize; + 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]; + const char* const suffixPtr = strrchr(srcFileName, '.'); + size_t const sfnSize = strlen(srcFileName); + if (!suffixPtr) { + DISPLAYLEVEL(1, "zstd: %s: unknown suffix -- ignored \n", srcFileName); + skippedFiles++; + continue; + } + suffixSize = strlen(suffixPtr); + 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, GZ_EXTENSION) && strcmp(suffixPtr, XZ_EXTENSION) && strcmp(suffixPtr, ZSTD_EXTENSION) && strcmp(suffixPtr, LZMA_EXTENSION))) { + DISPLAYLEVEL(1, "zstd: %s: unknown suffix (%s/%s/%s/%s expected) -- ignored \n", srcFileName, GZ_EXTENSION, XZ_EXTENSION, ZSTD_EXTENSION, LZMA_EXTENSION); + skippedFiles++; + continue; + } 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 */ |