1060 lines
42 KiB
C
1060 lines
42 KiB
C
/**
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* Copyright (c) 2016-present, Yann Collet, 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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/* *************************************
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* Compiler Options
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***************************************/
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#ifdef _MSC_VER /* Visual */
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# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
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# pragma warning(disable : 4204) /* non-constant aggregate initializer */
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#endif
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#if defined(__MINGW32__) && !defined(_POSIX_SOURCE)
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# define _POSIX_SOURCE 1 /* disable %llu warnings with MinGW on Windows */
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#endif
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/*-*************************************
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* Includes
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***************************************/
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#include "platform.h" /* Large Files support, SET_BINARY_MODE */
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#include "util.h" /* UTIL_getFileSize */
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#include <stdio.h> /* fprintf, fopen, fread, _fileno, stdin, stdout */
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#include <stdlib.h> /* malloc, free */
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#include <string.h> /* strcmp, strlen */
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#include <time.h> /* clock */
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#include <errno.h> /* errno */
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#include "mem.h"
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#include "fileio.h"
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#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_magicNumber, ZSTD_frameHeaderSize_max */
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#include "zstd.h"
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#ifdef ZSTD_MULTITHREAD
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# include "zstdmt_compress.h"
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#endif
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#if defined(ZSTD_GZCOMPRESS) || defined(ZSTD_GZDECOMPRESS)
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# include <zlib.h>
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# if !defined(z_const)
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# define z_const
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# endif
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#endif
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/*-*************************************
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* Constants
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***************************************/
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#define KB *(1<<10)
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#define MB *(1<<20)
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#define GB *(1U<<30)
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#define _1BIT 0x01
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#define _2BITS 0x03
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#define _3BITS 0x07
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#define _4BITS 0x0F
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#define _6BITS 0x3F
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#define _8BITS 0xFF
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#define BLOCKSIZE (128 KB)
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#define ROLLBUFFERSIZE (BLOCKSIZE*8*64)
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#define FIO_FRAMEHEADERSIZE 5 /* as a define, because needed to allocated table on stack */
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#define FSE_CHECKSUM_SEED 0
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#define CACHELINE 64
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#define MAX_DICT_SIZE (8 MB) /* protection against large input (attack scenario) */
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#define FNSPACE 30
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#define GZ_EXTENSION ".gz"
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/*-*************************************
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* Macros
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***************************************/
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#define DISPLAY(...) fprintf(stderr, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) { if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); } }
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static U32 g_displayLevel = 2; /* 0 : no display; 1: errors; 2 : + result + interaction + warnings; 3 : + progression; 4 : + information */
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void FIO_setNotificationLevel(unsigned level) { g_displayLevel=level; }
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#define DISPLAYUPDATE(l, ...) { if (g_displayLevel>=l) { \
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if ((clock() - g_time > refreshRate) || (g_displayLevel>=4)) \
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{ g_time = clock(); DISPLAY(__VA_ARGS__); \
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if (g_displayLevel>=4) fflush(stdout); } } }
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static const clock_t refreshRate = CLOCKS_PER_SEC * 15 / 100;
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static clock_t g_time = 0;
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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/* ************************************************************
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* Avoid fseek()'s 2GiB barrier with MSVC, MacOS, *BSD, MinGW
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***************************************************************/
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#if defined(_MSC_VER) && _MSC_VER >= 1400
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# define LONG_SEEK _fseeki64
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#elif !defined(__64BIT__) && (PLATFORM_POSIX_VERSION >= 200112L) /* No point defining Large file for 64 bit */
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# define LONG_SEEK fseeko
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#elif defined(__MINGW32__) && !defined(__STRICT_ANSI__) && !defined(__NO_MINGW_LFS) && defined(__MSVCRT__)
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# define LONG_SEEK fseeko64
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#elif defined(_WIN32) && !defined(__DJGPP__)
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# include <windows.h>
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static int LONG_SEEK(FILE* file, __int64 offset, int origin) {
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LARGE_INTEGER off;
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DWORD method;
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off.QuadPart = offset;
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if (origin == SEEK_END)
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method = FILE_END;
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else if (origin == SEEK_CUR)
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method = FILE_CURRENT;
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else
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method = FILE_BEGIN;
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if (SetFilePointerEx((HANDLE) _get_osfhandle(_fileno(file)), off, NULL, method))
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return 0;
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else
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return -1;
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}
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#else
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# define LONG_SEEK fseek
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#endif
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/*-*************************************
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* Local Parameters - Not thread safe
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***************************************/
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static FIO_compressionType_t g_compressionType = FIO_zstdCompression;
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void FIO_setCompressionType(FIO_compressionType_t compressionType) { g_compressionType = compressionType; }
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static U32 g_overwrite = 0;
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void FIO_overwriteMode(void) { g_overwrite=1; }
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static U32 g_sparseFileSupport = 1; /* 0 : no sparse allowed; 1: auto (file yes, stdout no); 2: force sparse */
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void FIO_setSparseWrite(unsigned sparse) { g_sparseFileSupport=sparse; }
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static U32 g_dictIDFlag = 1;
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void FIO_setDictIDFlag(unsigned dictIDFlag) { g_dictIDFlag = dictIDFlag; }
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static U32 g_checksumFlag = 1;
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void FIO_setChecksumFlag(unsigned checksumFlag) { g_checksumFlag = checksumFlag; }
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static U32 g_removeSrcFile = 0;
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void FIO_setRemoveSrcFile(unsigned flag) { g_removeSrcFile = (flag>0); }
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static U32 g_memLimit = 0;
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void FIO_setMemLimit(unsigned memLimit) { g_memLimit = memLimit; }
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static U32 g_nbThreads = 1;
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void FIO_setNbThreads(unsigned nbThreads) {
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#ifndef ZSTD_MULTITHREAD
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if (nbThreads > 1) DISPLAYLEVEL(2, "Note : multi-threading is disabled \n");
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#endif
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g_nbThreads = nbThreads;
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}
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static U32 g_blockSize = 0;
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void FIO_setBlockSize(unsigned blockSize) {
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if (blockSize && g_nbThreads==1)
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DISPLAYLEVEL(2, "Setting block size is useless in single-thread mode \n");
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#ifdef ZSTD_MULTITHREAD
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if (blockSize-1 < ZSTDMT_SECTION_SIZE_MIN-1) /* intentional underflow */
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DISPLAYLEVEL(2, "Note : minimum block size is %u KB \n", (ZSTDMT_SECTION_SIZE_MIN>>10));
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#endif
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g_blockSize = blockSize;
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}
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#define FIO_OVERLAP_LOG_NOTSET 9999
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static U32 g_overlapLog = FIO_OVERLAP_LOG_NOTSET;
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void FIO_setOverlapLog(unsigned overlapLog){
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if (overlapLog && g_nbThreads==1)
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DISPLAYLEVEL(2, "Setting overlapLog is useless in single-thread mode \n");
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g_overlapLog = overlapLog;
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}
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/*-*************************************
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* Exceptions
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***************************************/
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#ifndef DEBUG
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# define DEBUG 0
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#endif
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#define DEBUGOUTPUT(...) if (DEBUG) DISPLAY(__VA_ARGS__);
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#define EXM_THROW(error, ...) \
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{ \
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DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \
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DISPLAYLEVEL(1, "Error %i : ", error); \
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DISPLAYLEVEL(1, __VA_ARGS__); \
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DISPLAYLEVEL(1, " \n"); \
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exit(error); \
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}
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/*-*************************************
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* Functions
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***************************************/
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/** FIO_openSrcFile() :
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* condition : `dstFileName` must be non-NULL.
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* @result : FILE* to `dstFileName`, or NULL if it fails */
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static FILE* FIO_openSrcFile(const char* srcFileName)
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{
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FILE* f;
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if (!strcmp (srcFileName, stdinmark)) {
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DISPLAYLEVEL(4,"Using stdin for input\n");
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f = stdin;
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SET_BINARY_MODE(stdin);
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} else {
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if (!UTIL_isRegFile(srcFileName)) {
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DISPLAYLEVEL(1, "zstd: %s is not a regular file -- ignored \n", srcFileName);
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return NULL;
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}
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f = fopen(srcFileName, "rb");
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if ( f==NULL ) DISPLAYLEVEL(1, "zstd: %s: %s \n", srcFileName, strerror(errno));
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}
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return f;
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}
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/** FIO_openDstFile() :
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* condition : `dstFileName` must be non-NULL.
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* @result : FILE* to `dstFileName`, or NULL if it fails */
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static FILE* FIO_openDstFile(const char* dstFileName)
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{
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FILE* f;
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if (!strcmp (dstFileName, stdoutmark)) {
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DISPLAYLEVEL(4,"Using stdout for output\n");
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f = stdout;
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SET_BINARY_MODE(stdout);
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if (g_sparseFileSupport==1) {
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g_sparseFileSupport = 0;
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DISPLAYLEVEL(4, "Sparse File Support is automatically disabled on stdout ; try --sparse \n");
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}
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} else {
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if (!g_overwrite && strcmp (dstFileName, nulmark)) { /* Check if destination file already exists */
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f = fopen( dstFileName, "rb" );
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if (f != 0) { /* dest file exists, prompt for overwrite authorization */
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fclose(f);
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if (g_displayLevel <= 1) {
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/* No interaction possible */
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DISPLAY("zstd: %s already exists; not overwritten \n", dstFileName);
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return NULL;
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}
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DISPLAY("zstd: %s already exists; do you wish to overwrite (y/N) ? ", dstFileName);
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{ int ch = getchar();
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if ((ch!='Y') && (ch!='y')) {
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DISPLAY(" not overwritten \n");
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return NULL;
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}
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while ((ch!=EOF) && (ch!='\n')) ch = getchar(); /* flush rest of input line */
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} } }
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f = fopen( dstFileName, "wb" );
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if (f==NULL) DISPLAYLEVEL(1, "zstd: %s: %s\n", dstFileName, strerror(errno));
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}
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return f;
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}
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/*! FIO_loadFile() :
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* creates a buffer, pointed by `*bufferPtr`,
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* loads `filename` content into it,
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* up to MAX_DICT_SIZE bytes.
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* @return : loaded size
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*/
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static size_t FIO_loadFile(void** bufferPtr, const char* fileName)
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{
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FILE* fileHandle;
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U64 fileSize;
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*bufferPtr = NULL;
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if (fileName == NULL) return 0;
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DISPLAYLEVEL(4,"Loading %s as dictionary \n", fileName);
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fileHandle = fopen(fileName, "rb");
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if (fileHandle==0) EXM_THROW(31, "zstd: %s: %s", fileName, strerror(errno));
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fileSize = UTIL_getFileSize(fileName);
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if (fileSize > MAX_DICT_SIZE) {
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int seekResult;
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if (fileSize > 1 GB) EXM_THROW(32, "Dictionary file %s is too large", fileName); /* avoid extreme cases */
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DISPLAYLEVEL(2,"Dictionary %s is too large : using last %u bytes only \n", fileName, (U32)MAX_DICT_SIZE);
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seekResult = fseek(fileHandle, (long int)(fileSize-MAX_DICT_SIZE), SEEK_SET); /* use end of file */
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if (seekResult != 0) EXM_THROW(33, "zstd: %s: %s", fileName, strerror(errno));
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fileSize = MAX_DICT_SIZE;
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}
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*bufferPtr = malloc((size_t)fileSize);
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if (*bufferPtr==NULL) EXM_THROW(34, "zstd: %s", strerror(errno));
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{ size_t const readSize = fread(*bufferPtr, 1, (size_t)fileSize, fileHandle);
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if (readSize!=fileSize) EXM_THROW(35, "Error reading dictionary file %s", fileName); }
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fclose(fileHandle);
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return (size_t)fileSize;
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}
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#ifndef ZSTD_NOCOMPRESS
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/*-**********************************************************************
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* Compression
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************************************************************************/
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typedef struct {
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FILE* srcFile;
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FILE* dstFile;
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void* srcBuffer;
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size_t srcBufferSize;
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void* dstBuffer;
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size_t dstBufferSize;
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#ifdef ZSTD_MULTITHREAD
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ZSTDMT_CCtx* cctx;
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#else
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ZSTD_CStream* cctx;
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#endif
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} cRess_t;
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static cRess_t FIO_createCResources(const char* dictFileName, int cLevel,
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U64 srcSize, int srcRegFile,
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ZSTD_compressionParameters* comprParams) {
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cRess_t ress;
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memset(&ress, 0, sizeof(ress));
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#ifdef ZSTD_MULTITHREAD
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ress.cctx = ZSTDMT_createCCtx(g_nbThreads);
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if (ress.cctx == NULL) EXM_THROW(30, "zstd: allocation error : can't create ZSTD_CStream");
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if ((cLevel==ZSTD_maxCLevel()) && (g_overlapLog==FIO_OVERLAP_LOG_NOTSET))
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ZSTDMT_setMTCtxParameter(ress.cctx, ZSTDMT_p_overlapSectionLog, 9); /* use complete window for overlap */
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if (g_overlapLog != FIO_OVERLAP_LOG_NOTSET)
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ZSTDMT_setMTCtxParameter(ress.cctx, ZSTDMT_p_overlapSectionLog, g_overlapLog);
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#else
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ress.cctx = ZSTD_createCStream();
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if (ress.cctx == NULL) EXM_THROW(30, "zstd: allocation error : can't create ZSTD_CStream");
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#endif
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ress.srcBufferSize = ZSTD_CStreamInSize();
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ress.srcBuffer = malloc(ress.srcBufferSize);
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ress.dstBufferSize = ZSTD_CStreamOutSize();
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ress.dstBuffer = malloc(ress.dstBufferSize);
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if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(31, "zstd: allocation error : not enough memory");
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/* dictionary */
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{ void* dictBuffer;
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size_t const dictBuffSize = FIO_loadFile(&dictBuffer, dictFileName);
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if (dictFileName && (dictBuffer==NULL)) EXM_THROW(32, "zstd: allocation error : can't create dictBuffer");
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{ ZSTD_parameters params = ZSTD_getParams(cLevel, srcSize, dictBuffSize);
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params.fParams.contentSizeFlag = srcRegFile;
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params.fParams.checksumFlag = g_checksumFlag;
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params.fParams.noDictIDFlag = !g_dictIDFlag;
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if (comprParams->windowLog) params.cParams.windowLog = comprParams->windowLog;
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if (comprParams->chainLog) params.cParams.chainLog = comprParams->chainLog;
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if (comprParams->hashLog) params.cParams.hashLog = comprParams->hashLog;
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if (comprParams->searchLog) params.cParams.searchLog = comprParams->searchLog;
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if (comprParams->searchLength) params.cParams.searchLength = comprParams->searchLength;
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if (comprParams->targetLength) params.cParams.targetLength = comprParams->targetLength;
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if (comprParams->strategy) params.cParams.strategy = (ZSTD_strategy)(comprParams->strategy - 1);
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#ifdef ZSTD_MULTITHREAD
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{ size_t const errorCode = ZSTDMT_initCStream_advanced(ress.cctx, dictBuffer, dictBuffSize, params, srcSize);
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if (ZSTD_isError(errorCode)) EXM_THROW(33, "Error initializing CStream : %s", ZSTD_getErrorName(errorCode));
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ZSTDMT_setMTCtxParameter(ress.cctx, ZSTDMT_p_sectionSize, g_blockSize);
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#else
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{ size_t const errorCode = ZSTD_initCStream_advanced(ress.cctx, dictBuffer, dictBuffSize, params, srcSize);
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if (ZSTD_isError(errorCode)) EXM_THROW(33, "Error initializing CStream : %s", ZSTD_getErrorName(errorCode));
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#endif
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} }
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free(dictBuffer);
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}
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return ress;
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}
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static void FIO_freeCResources(cRess_t ress)
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{
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free(ress.srcBuffer);
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free(ress.dstBuffer);
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#ifdef ZSTD_MULTITHREAD
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ZSTDMT_freeCCtx(ress.cctx);
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#else
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ZSTD_freeCStream(ress.cctx); /* never fails */
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#endif
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}
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#ifdef ZSTD_GZCOMPRESS
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static unsigned long long FIO_compressGzFrame(cRess_t* ress, const char* srcFileName, U64 const srcFileSize, int compressionLevel, U64* readsize)
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{
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unsigned long long inFileSize = 0, outFileSize = 0;
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z_stream strm;
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int ret;
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if (compressionLevel > Z_BEST_COMPRESSION) compressionLevel = Z_BEST_COMPRESSION;
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strm.zalloc = Z_NULL;
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strm.zfree = Z_NULL;
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strm.opaque = Z_NULL;
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ret = deflateInit2(&strm, compressionLevel, Z_DEFLATED, 15 /* maxWindowLogSize */ + 16 /* gzip only */, 8, Z_DEFAULT_STRATEGY); /* see http://www.zlib.net/manual.html */
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if (ret != Z_OK) EXM_THROW(71, "zstd: %s: deflateInit2 error %d \n", srcFileName, ret);
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strm.next_in = 0;
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strm.avail_in = Z_NULL;
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strm.next_out = (Bytef*)ress->dstBuffer;
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strm.avail_out = (uInt)ress->dstBufferSize;
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while (1) {
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if (strm.avail_in == 0) {
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size_t const inSize = fread(ress->srcBuffer, 1, ress->srcBufferSize, ress->srcFile);
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if (inSize == 0) break;
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inFileSize += inSize;
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strm.next_in = (z_const unsigned char*)ress->srcBuffer;
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strm.avail_in = (uInt)inSize;
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}
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ret = deflate(&strm, Z_NO_FLUSH);
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if (ret != Z_OK) EXM_THROW(72, "zstd: %s: deflate error %d \n", srcFileName, ret);
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{ size_t const decompBytes = ress->dstBufferSize - strm.avail_out;
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if (decompBytes) {
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if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes) EXM_THROW(73, "Write error : cannot write to output file");
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outFileSize += decompBytes;
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strm.next_out = (Bytef*)ress->dstBuffer;
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strm.avail_out = (uInt)ress->dstBufferSize;
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}
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}
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if (!srcFileSize) DISPLAYUPDATE(2, "\rRead : %u MB ==> %.2f%%", (U32)(inFileSize>>20), (double)outFileSize/inFileSize*100)
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else DISPLAYUPDATE(2, "\rRead : %u / %u MB ==> %.2f%%", (U32)(inFileSize>>20), (U32)(srcFileSize>>20), (double)outFileSize/inFileSize*100);
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}
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while (1) {
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ret = deflate(&strm, Z_FINISH);
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{ size_t const decompBytes = ress->dstBufferSize - strm.avail_out;
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if (decompBytes) {
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if (fwrite(ress->dstBuffer, 1, decompBytes, ress->dstFile) != decompBytes) EXM_THROW(75, "Write error : cannot write to output file");
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outFileSize += decompBytes;
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strm.next_out = (Bytef*)ress->dstBuffer;
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strm.avail_out = (uInt)ress->dstBufferSize;
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}
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}
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if (ret == Z_STREAM_END) break;
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if (ret != Z_BUF_ERROR) EXM_THROW(77, "zstd: %s: deflate error %d \n", srcFileName, ret);
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}
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ret = deflateEnd(&strm);
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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 && !result) { if (remove(srcFileName)) EXM_THROW(1, "zstd: %s: %s", srcFileName, strerror(errno)); } /* remove source file : --rm */
|
|
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;
|
|
|
|
strm.zalloc = Z_NULL;
|
|
strm.zfree = Z_NULL;
|
|
strm.opaque = Z_NULL;
|
|
strm.next_in = 0;
|
|
strm.avail_in = Z_NULL;
|
|
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 ( ; ; ) {
|
|
int ret;
|
|
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;
|
|
inflateEnd(&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==0) 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) { 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 */
|