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30ffc24ad7
zstd/programs/zstdcli.c
Yi Jin 30ffc24ad7 fix the code ahead of declaration issue
2018-12-19 17:49:04 -08:00

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/*
* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/*-************************************
* Tuning parameters
**************************************/
#ifndef ZSTDCLI_CLEVEL_DEFAULT
# define ZSTDCLI_CLEVEL_DEFAULT 3
#endif
#ifndef ZSTDCLI_CLEVEL_MAX
# define ZSTDCLI_CLEVEL_MAX 19 /* without using --ultra */
#endif
/*-************************************
* Dependencies
**************************************/
#include "platform.h" /* IS_CONSOLE, PLATFORM_POSIX_VERSION */
#include "util.h" /* UTIL_HAS_CREATEFILELIST, UTIL_createFileList */
#include <stdio.h> /* fprintf(), stdin, stdout, stderr */
#include <stdlib.h> /* getenv */
#include <string.h> /* strcmp, strlen */
#include <errno.h> /* errno */
#include "fileio.h" /* stdinmark, stdoutmark, ZSTD_EXTENSION */
#ifndef ZSTD_NOBENCH
# include "benchzstd.h" /* BMK_benchFiles */
#endif
#ifndef ZSTD_NODICT
# include "dibio.h" /* ZDICT_cover_params_t, DiB_trainFromFiles() */
#endif
#define ZSTD_STATIC_LINKING_ONLY /* ZSTD_minCLevel */
#include "zstd.h" /* ZSTD_VERSION_STRING, ZSTD_maxCLevel */
/*-************************************
* Constants
**************************************/
#define COMPRESSOR_NAME "zstd command line interface"
#ifndef ZSTD_VERSION
# define ZSTD_VERSION "v" ZSTD_VERSION_STRING
#endif
#define AUTHOR "Yann Collet"
#define WELCOME_MESSAGE "*** %s %i-bits %s, by %s ***\n", COMPRESSOR_NAME, (int)(sizeof(size_t)*8), ZSTD_VERSION, AUTHOR
#define ZSTD_ZSTDMT "zstdmt"
#define ZSTD_UNZSTD "unzstd"
#define ZSTD_CAT "zstdcat"
#define ZSTD_ZCAT "zcat"
#define ZSTD_GZ "gzip"
#define ZSTD_GUNZIP "gunzip"
#define ZSTD_GZCAT "gzcat"
#define ZSTD_LZMA "lzma"
#define ZSTD_UNLZMA "unlzma"
#define ZSTD_XZ "xz"
#define ZSTD_UNXZ "unxz"
#define ZSTD_LZ4 "lz4"
#define ZSTD_UNLZ4 "unlz4"
#define KB *(1 <<10)
#define MB *(1 <<20)
#define GB *(1U<<30)
#define DISPLAY_LEVEL_DEFAULT 2
static const char* g_defaultDictName = "dictionary";
static const unsigned g_defaultMaxDictSize = 110 KB;
static const int g_defaultDictCLevel = 3;
static const unsigned g_defaultSelectivityLevel = 9;
static const unsigned g_defaultMaxWindowLog = 27;
#define OVERLAP_LOG_DEFAULT 9999
#define LDM_PARAM_DEFAULT 9999 /* Default for parameters where 0 is valid */
static U32 g_overlapLog = OVERLAP_LOG_DEFAULT;
static U32 g_ldmHashLog = 0;
static U32 g_ldmMinMatch = 0;
static U32 g_ldmHashRateLog = LDM_PARAM_DEFAULT;
static U32 g_ldmBucketSizeLog = LDM_PARAM_DEFAULT;
#define DEFAULT_ACCEL 1
typedef enum { cover, fastCover, legacy } dictType;
/*-************************************
* Display Macros
**************************************/
#define DISPLAY(...) fprintf(g_displayOut, __VA_ARGS__)
#define DISPLAYLEVEL(l, ...) { if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); } }
static int g_displayLevel = DISPLAY_LEVEL_DEFAULT; /* 0 : no display, 1: errors, 2 : + result + interaction + warnings, 3 : + progression, 4 : + information */
static FILE* g_displayOut;
/*-************************************
* Command Line
**************************************/
static int usage(const char* programName)
{
DISPLAY( "Usage : \n");
DISPLAY( " %s [args] [FILE(s)] [-o file] \n", programName);
DISPLAY( "\n");
DISPLAY( "FILE : a filename \n");
DISPLAY( " with no FILE, or when FILE is - , read standard input\n");
DISPLAY( "Arguments : \n");
#ifndef ZSTD_NOCOMPRESS
DISPLAY( " -# : # compression level (1-%d, default: %d) \n", ZSTDCLI_CLEVEL_MAX, ZSTDCLI_CLEVEL_DEFAULT);
#endif
#ifndef ZSTD_NODECOMPRESS
DISPLAY( " -d : decompression \n");
#endif
DISPLAY( " -D file: use `file` as Dictionary \n");
DISPLAY( " -o file: result stored into `file` (only if 1 input file) \n");
DISPLAY( " -f : overwrite output without prompting and (de)compress links \n");
DISPLAY( "--rm : remove source file(s) after successful de/compression \n");
DISPLAY( " -k : preserve source file(s) (default) \n");
DISPLAY( " -h/-H : display help/long help and exit \n");
return 0;
}
static int usage_advanced(const char* programName)
{
DISPLAY(WELCOME_MESSAGE);
usage(programName);
DISPLAY( "\n");
DISPLAY( "Advanced arguments : \n");
DISPLAY( " -V : display Version number and exit \n");
DISPLAY( " -v : verbose mode; specify multiple times to increase verbosity\n");
DISPLAY( " -q : suppress warnings; specify twice to suppress errors too\n");
DISPLAY( " -c : force write to standard output, even if it is the console\n");
DISPLAY( " -l : print information about zstd compressed files \n");
#ifndef ZSTD_NOCOMPRESS
DISPLAY( "--ultra : enable levels beyond %i, up to %i (requires more memory)\n", ZSTDCLI_CLEVEL_MAX, ZSTD_maxCLevel());
DISPLAY( "--long[=#]: enable long distance matching with given window log (default: %u)\n", g_defaultMaxWindowLog);
DISPLAY( "--fast[=#]: switch to ultra fast compression level (default: %u)\n", 1);
DISPLAY( "--adapt : dynamically adapt compression level to I/O conditions \n");
#ifdef ZSTD_MULTITHREAD
DISPLAY( " -T# : spawns # compression threads (default: 1, 0==# cores) \n");
DISPLAY( " -B# : select size of each job (default: 0==automatic) \n");
DISPLAY( " --rsyncable : compress using a rsync-friendly method (-B sets block size) \n");
#endif
DISPLAY( "--no-dictID : don't write dictID into header (dictionary compression)\n");
DISPLAY( "--[no-]check : integrity check (default: enabled) \n");
#endif
#ifdef UTIL_HAS_CREATEFILELIST
DISPLAY( " -r : operate recursively on directories \n");
#endif
DISPLAY( "--format=zstd : compress files to the .zst format (default) \n");
#ifdef ZSTD_GZCOMPRESS
DISPLAY( "--format=gzip : compress files to the .gz format \n");
#endif
#ifdef ZSTD_LZMACOMPRESS
DISPLAY( "--format=xz : compress files to the .xz format \n");
DISPLAY( "--format=lzma : compress files to the .lzma format \n");
#endif
#ifdef ZSTD_LZ4COMPRESS
DISPLAY( "--format=lz4 : compress files to the .lz4 format \n");
#endif
#ifndef ZSTD_NODECOMPRESS
DISPLAY( "--test : test compressed file integrity \n");
#if ZSTD_SPARSE_DEFAULT
DISPLAY( "--[no-]sparse : sparse mode (default: enabled on file, disabled on stdout)\n");
#else
DISPLAY( "--[no-]sparse : sparse mode (default: disabled)\n");
#endif
#endif
DISPLAY( " -M# : Set a memory usage limit for decompression \n");
DISPLAY( "--no-progress : do not display the progress bar \n");
DISPLAY( "-- : All arguments after \"--\" are treated as files \n");
#ifndef ZSTD_NODICT
DISPLAY( "\n");
DISPLAY( "Dictionary builder : \n");
DISPLAY( "--train ## : create a dictionary from a training set of files \n");
DISPLAY( "--train-cover[=k=#,d=#,steps=#,split=#] : use the cover algorithm with optional args\n");
DISPLAY( "--train-fastcover[=k=#,d=#,f=#,steps=#,split=#,accel=#] : use the fast cover algorithm with optional args\n");
DISPLAY( "--train-legacy[=s=#] : use the legacy algorithm with selectivity (default: %u)\n", g_defaultSelectivityLevel);
DISPLAY( " -o file : `file` is dictionary name (default: %s) \n", g_defaultDictName);
DISPLAY( "--maxdict=# : limit dictionary to specified size (default: %u) \n", g_defaultMaxDictSize);
DISPLAY( "--dictID=# : force dictionary ID to specified value (default: random)\n");
#endif
#ifndef ZSTD_NOBENCH
DISPLAY( "\n");
DISPLAY( "Benchmark arguments : \n");
DISPLAY( " -b# : benchmark file(s), using # compression level (default: %d) \n", ZSTDCLI_CLEVEL_DEFAULT);
DISPLAY( " -e# : test all compression levels from -bX to # (default: 1)\n");
DISPLAY( " -i# : minimum evaluation time in seconds (default: 3s) \n");
DISPLAY( " -B# : cut file into independent blocks of size # (default: no block)\n");
DISPLAY( "--priority=rt : set process priority to real-time \n");
#endif
return 0;
}
static int badusage(const char* programName)
{
DISPLAYLEVEL(1, "Incorrect parameters\n");
if (g_displayLevel >= 2) usage(programName);
return 1;
}
static void waitEnter(void)
{
int unused;
DISPLAY("Press enter to continue...\n");
unused = getchar();
(void)unused;
}
static const char* lastNameFromPath(const char* path)
{
const char* name = path;
if (strrchr(name, '/')) name = strrchr(name, '/') + 1;
if (strrchr(name, '\\')) name = strrchr(name, '\\') + 1; /* windows */
return name;
}
/*! exeNameMatch() :
@return : a non-zero value if exeName matches test, excluding the extension
*/
static int exeNameMatch(const char* exeName, const char* test)
{
return !strncmp(exeName, test, strlen(test)) &&
(exeName[strlen(test)] == '\0' || exeName[strlen(test)] == '.');
}
static void errorOut(const char* msg)
{
DISPLAY("%s \n", msg); exit(1);
}
/*! _readU32FromChar() :
* @return 0 if success, and store the result in *value.
* allows and interprets K, KB, KiB, M, MB and MiB suffix.
* Will also modify `*stringPtr`, advancing it to position where it stopped reading.
* @return 1 if an overflow error occurs */
static int _readU32FromChar(const char** stringPtr, unsigned* value)
{
static unsigned const max = (((unsigned)(-1)) / 10) - 1;
unsigned result = 0;
while ((**stringPtr >='0') && (**stringPtr <='9')) {
if (result > max) return 1; // overflow error
result *= 10, result += **stringPtr - '0', (*stringPtr)++ ;
}
if ((**stringPtr=='K') || (**stringPtr=='M')) {
unsigned const maxK = ((unsigned)(-1)) >> 10;
if (result > maxK) return 1; // overflow error
result <<= 10;
if (**stringPtr=='M') {
if (result > maxK) return 1; // overflow error
result <<= 10;
}
(*stringPtr)++; /* skip `K` or `M` */
if (**stringPtr=='i') (*stringPtr)++;
if (**stringPtr=='B') (*stringPtr)++;
}
*value = result;
return 0;
}
/*! readU32FromChar() :
* @return : unsigned integer value read from input in `char` format.
* allows and interprets K, KB, KiB, M, MB and MiB suffix.
* Will also modify `*stringPtr`, advancing it to position where it stopped reading.
* Note : function will exit() program if digit sequence overflows */
static unsigned readU32FromChar(const char** stringPtr) {
static const char errorMsg[] = "error: numeric value too large";
unsigned result;
if (_readU32FromChar(stringPtr, &result)) { errorOut(errorMsg); }
return result;
}
/** longCommandWArg() :
* check if *stringPtr is the same as longCommand.
* If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand.
* @return 0 and doesn't modify *stringPtr otherwise.
*/
static unsigned longCommandWArg(const char** stringPtr, const char* longCommand)
{
size_t const comSize = strlen(longCommand);
int const result = !strncmp(*stringPtr, longCommand, comSize);
if (result) *stringPtr += comSize;
return result;
}
#ifndef ZSTD_NODICT
/**
* parseCoverParameters() :
* reads cover parameters from *stringPtr (e.g. "--train-cover=k=48,d=8,steps=32") into *params
* @return 1 means that cover parameters were correct
* @return 0 in case of malformed parameters
*/
static unsigned parseCoverParameters(const char* stringPtr, ZDICT_cover_params_t* params)
{
memset(params, 0, sizeof(*params));
for (; ;) {
if (longCommandWArg(&stringPtr, "k=")) { params->k = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "d=")) { params->d = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "steps=")) { params->steps = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "split=")) {
unsigned splitPercentage = readU32FromChar(&stringPtr);
params->splitPoint = (double)splitPercentage / 100.0;
if (stringPtr[0]==',') { stringPtr++; continue; } else break;
}
return 0;
}
if (stringPtr[0] != 0) return 0;
DISPLAYLEVEL(4, "cover: k=%u\nd=%u\nsteps=%u\nsplit=%u\n", params->k, params->d, params->steps, (unsigned)(params->splitPoint * 100));
return 1;
}
/**
* parseFastCoverParameters() :
* reads fastcover parameters from *stringPtr (e.g. "--train-fastcover=k=48,d=8,f=20,steps=32,accel=2") into *params
* @return 1 means that fastcover parameters were correct
* @return 0 in case of malformed parameters
*/
static unsigned parseFastCoverParameters(const char* stringPtr, ZDICT_fastCover_params_t* params)
{
memset(params, 0, sizeof(*params));
for (; ;) {
if (longCommandWArg(&stringPtr, "k=")) { params->k = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "d=")) { params->d = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "f=")) { params->f = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "steps=")) { params->steps = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "accel=")) { params->accel = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "split=")) {
unsigned splitPercentage = readU32FromChar(&stringPtr);
params->splitPoint = (double)splitPercentage / 100.0;
if (stringPtr[0]==',') { stringPtr++; continue; } else break;
}
return 0;
}
if (stringPtr[0] != 0) return 0;
DISPLAYLEVEL(4, "cover: k=%u\nd=%u\nf=%u\nsteps=%u\nsplit=%u\naccel=%u\n", params->k, params->d, params->f, params->steps, (unsigned)(params->splitPoint * 100), params->accel);
return 1;
}
/**
* parseLegacyParameters() :
* reads legacy dictioanry builter parameters from *stringPtr (e.g. "--train-legacy=selectivity=8") into *selectivity
* @return 1 means that legacy dictionary builder parameters were correct
* @return 0 in case of malformed parameters
*/
static unsigned parseLegacyParameters(const char* stringPtr, unsigned* selectivity)
{
if (!longCommandWArg(&stringPtr, "s=") && !longCommandWArg(&stringPtr, "selectivity=")) { return 0; }
*selectivity = readU32FromChar(&stringPtr);
if (stringPtr[0] != 0) return 0;
DISPLAYLEVEL(4, "legacy: selectivity=%u\n", *selectivity);
return 1;
}
static ZDICT_cover_params_t defaultCoverParams(void)
{
ZDICT_cover_params_t params;
memset(&params, 0, sizeof(params));
params.d = 8;
params.steps = 4;
params.splitPoint = 1.0;
return params;
}
static ZDICT_fastCover_params_t defaultFastCoverParams(void)
{
ZDICT_fastCover_params_t params;
memset(&params, 0, sizeof(params));
params.d = 8;
params.f = 20;
params.steps = 4;
params.splitPoint = 0.75; /* different from default splitPoint of cover */
params.accel = DEFAULT_ACCEL;
return params;
}
#endif
/** parseAdaptParameters() :
* reads adapt parameters from *stringPtr (e.g. "--zstd=min=1,max=19) and store them into adaptMinPtr and adaptMaxPtr.
* Both adaptMinPtr and adaptMaxPtr must be already allocated and correctly initialized.
* There is no guarantee that any of these values will be updated.
* @return 1 means that parsing was successful,
* @return 0 in case of malformed parameters
*/
static unsigned parseAdaptParameters(const char* stringPtr, int* adaptMinPtr, int* adaptMaxPtr)
{
for ( ; ;) {
if (longCommandWArg(&stringPtr, "min=")) { *adaptMinPtr = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "max=")) { *adaptMaxPtr = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
DISPLAYLEVEL(4, "invalid compression parameter \n");
return 0;
}
if (stringPtr[0] != 0) return 0; /* check the end of string */
if (*adaptMinPtr > *adaptMaxPtr) {
DISPLAYLEVEL(4, "incoherent adaptation limits \n");
return 0;
}
return 1;
}
/** parseCompressionParameters() :
* reads compression parameters from *stringPtr (e.g. "--zstd=wlog=23,clog=23,hlog=22,slog=6,mml=3,tlen=48,strat=6") into *params
* @return 1 means that compression parameters were correct
* @return 0 in case of malformed parameters
*/
static unsigned parseCompressionParameters(const char* stringPtr, ZSTD_compressionParameters* params)
{
for ( ; ;) {
if (longCommandWArg(&stringPtr, "windowLog=") || longCommandWArg(&stringPtr, "wlog=")) { params->windowLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "chainLog=") || longCommandWArg(&stringPtr, "clog=")) { params->chainLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "hashLog=") || longCommandWArg(&stringPtr, "hlog=")) { params->hashLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "searchLog=") || longCommandWArg(&stringPtr, "slog=")) { params->searchLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "minMatch=") || longCommandWArg(&stringPtr, "mml=")) { params->minMatch = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "targetLength=") || longCommandWArg(&stringPtr, "tlen=")) { params->targetLength = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "strategy=") || longCommandWArg(&stringPtr, "strat=")) { params->strategy = (ZSTD_strategy)(readU32FromChar(&stringPtr)); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "overlapLog=") || longCommandWArg(&stringPtr, "ovlog=")) { g_overlapLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "ldmHashLog=") || longCommandWArg(&stringPtr, "lhlog=")) { g_ldmHashLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "ldmMinMatch=") || longCommandWArg(&stringPtr, "lmml=")) { g_ldmMinMatch = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "ldmBucketSizeLog=") || longCommandWArg(&stringPtr, "lblog=")) { g_ldmBucketSizeLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "ldmHashRateLog=") || longCommandWArg(&stringPtr, "lhrlog=")) { g_ldmHashRateLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
DISPLAYLEVEL(4, "invalid compression parameter \n");
return 0;
}
DISPLAYLEVEL(4, "windowLog=%d, chainLog=%d, hashLog=%d, searchLog=%d \n", params->windowLog, params->chainLog, params->hashLog, params->searchLog);
DISPLAYLEVEL(4, "minMatch=%d, targetLength=%d, strategy=%d \n", params->minMatch, params->targetLength, params->strategy);
if (stringPtr[0] != 0) return 0; /* check the end of string */
return 1;
}
static void printVersion(void)
{
DISPLAY(WELCOME_MESSAGE);
/* format support */
DISPLAYLEVEL(3, "*** supports: zstd");
#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>0) && (ZSTD_LEGACY_SUPPORT<8)
DISPLAYLEVEL(3, ", zstd legacy v0.%d+", ZSTD_LEGACY_SUPPORT);
#endif
#ifdef ZSTD_GZCOMPRESS
DISPLAYLEVEL(3, ", gzip");
#endif
#ifdef ZSTD_LZ4COMPRESS
DISPLAYLEVEL(3, ", lz4");
#endif
#ifdef ZSTD_LZMACOMPRESS
DISPLAYLEVEL(3, ", lzma, xz ");
#endif
DISPLAYLEVEL(3, "\n");
/* posix support */
#ifdef _POSIX_C_SOURCE
DISPLAYLEVEL(4, "_POSIX_C_SOURCE defined: %ldL\n", (long) _POSIX_C_SOURCE);
#endif
#ifdef _POSIX_VERSION
DISPLAYLEVEL(4, "_POSIX_VERSION defined: %ldL \n", (long) _POSIX_VERSION);
#endif
#ifdef PLATFORM_POSIX_VERSION
DISPLAYLEVEL(4, "PLATFORM_POSIX_VERSION defined: %ldL\n", (long) PLATFORM_POSIX_VERSION);
#endif
}
/* Environment variables for parameter setting */
#define ENV_CLEVEL "ZSTD_CLEVEL"
/* functions that pick up environment variables */
int init_cLevel(void) {
const char* const env = getenv(ENV_CLEVEL);
if (env) {
const char *ptr = env;
int sign = 1;
if (*ptr == '-') {
sign = -1;
ptr++;
} else if (*ptr == '+') {
ptr++;
}
if ((*ptr>='0') && (*ptr<='9')) {
unsigned absLevel;
if (_readU32FromChar(&ptr, &absLevel)) {
DISPLAYLEVEL(2, "Ignore environment variable %s=%s: numeric value too large\n", ENV_CLEVEL, env);
return ZSTDCLI_CLEVEL_DEFAULT;
} else if (*ptr == 0) {
return sign * absLevel;
}
}
DISPLAYLEVEL(2, "Ignore environment variable %s=%s: not a valid integer value\n", ENV_CLEVEL, env);
}
return ZSTDCLI_CLEVEL_DEFAULT;
}
typedef enum { zom_compress, zom_decompress, zom_test, zom_bench, zom_train, zom_list } zstd_operation_mode;
#define CLEAN_RETURN(i) { operationResult = (i); goto _end; }
#ifdef ZSTD_NOCOMPRESS
/* symbols from compression library are not defined and should not be invoked */
# define MINCLEVEL -50
# define MAXCLEVEL 22
#else
# define MINCLEVEL ZSTD_minCLevel()
# define MAXCLEVEL ZSTD_maxCLevel()
#endif
int main(int argCount, const char* argv[])
{
int argNb,
followLinks = 0,
forceStdout = 0,
lastCommand = 0,
ldmFlag = 0,
main_pause = 0,
nbWorkers = 0,
adapt = 0,
adaptMin = MINCLEVEL,
adaptMax = MAXCLEVEL,
rsyncable = 0,
nextArgumentIsOutFileName = 0,
nextArgumentIsMaxDict = 0,
nextArgumentIsDictID = 0,
nextArgumentsAreFiles = 0,
nextEntryIsDictionary = 0,
operationResult = 0,
separateFiles = 0,
setRealTimePrio = 0,
singleThread = 0,
ultra=0;
double compressibility = 0.5;
unsigned bench_nbSeconds = 3; /* would be better if this value was synchronized from bench */
size_t blockSize = 0;
zstd_operation_mode operation = zom_compress;
ZSTD_compressionParameters compressionParams;
int cLevel;
int cLevelLast = -1000000000;
unsigned recursive = 0;
unsigned memLimit = 0;
const char** filenameTable = (const char**)malloc(argCount * sizeof(const char*)); /* argCount >= 1 */
unsigned filenameIdx = 0;
const char* programName = argv[0];
const char* outFileName = NULL;
const char* dictFileName = NULL;
const char* suffix = ZSTD_EXTENSION;
unsigned maxDictSize = g_defaultMaxDictSize;
unsigned dictID = 0;
int dictCLevel = g_defaultDictCLevel;
unsigned dictSelect = g_defaultSelectivityLevel;
#ifdef UTIL_HAS_CREATEFILELIST
const char** extendedFileList = NULL;
char* fileNamesBuf = NULL;
unsigned fileNamesNb;
#endif
#ifndef ZSTD_NODICT
ZDICT_cover_params_t coverParams = defaultCoverParams();
ZDICT_fastCover_params_t fastCoverParams = defaultFastCoverParams();
dictType dict = fastCover;
#endif
#ifndef ZSTD_NOBENCH
BMK_advancedParams_t benchParams = BMK_initAdvancedParams();
#endif
/* init */
(void)recursive; (void)cLevelLast; /* not used when ZSTD_NOBENCH set */
(void)memLimit; /* not used when ZSTD_NODECOMPRESS set */
if (filenameTable==NULL) { DISPLAY("zstd: %s \n", strerror(errno)); exit(1); }
filenameTable[0] = stdinmark;
g_displayOut = stderr;
cLevel = init_cLevel();
programName = lastNameFromPath(programName);
#ifdef ZSTD_MULTITHREAD
nbWorkers = 1;
#endif
/* preset behaviors */
if (exeNameMatch(programName, ZSTD_ZSTDMT)) nbWorkers=0, singleThread=0;
if (exeNameMatch(programName, ZSTD_UNZSTD)) operation=zom_decompress;
if (exeNameMatch(programName, ZSTD_CAT)) { operation=zom_decompress; forceStdout=1; FIO_overwriteMode(); outFileName=stdoutmark; g_displayLevel=1; } /* supports multiple formats */
if (exeNameMatch(programName, ZSTD_ZCAT)) { operation=zom_decompress; forceStdout=1; FIO_overwriteMode(); outFileName=stdoutmark; g_displayLevel=1; } /* behave like zcat, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_GZ)) { suffix = GZ_EXTENSION; FIO_setCompressionType(FIO_gzipCompression); FIO_setRemoveSrcFile(1); } /* behave like gzip */
if (exeNameMatch(programName, ZSTD_GUNZIP)) { operation=zom_decompress; FIO_setRemoveSrcFile(1); } /* behave like gunzip, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_GZCAT)) { operation=zom_decompress; forceStdout=1; FIO_overwriteMode(); outFileName=stdoutmark; g_displayLevel=1; } /* behave like gzcat, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_LZMA)) { suffix = LZMA_EXTENSION; FIO_setCompressionType(FIO_lzmaCompression); FIO_setRemoveSrcFile(1); } /* behave like lzma */
if (exeNameMatch(programName, ZSTD_UNLZMA)) { operation=zom_decompress; FIO_setCompressionType(FIO_lzmaCompression); FIO_setRemoveSrcFile(1); } /* behave like unlzma, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_XZ)) { suffix = XZ_EXTENSION; FIO_setCompressionType(FIO_xzCompression); FIO_setRemoveSrcFile(1); } /* behave like xz */
if (exeNameMatch(programName, ZSTD_UNXZ)) { operation=zom_decompress; FIO_setCompressionType(FIO_xzCompression); FIO_setRemoveSrcFile(1); } /* behave like unxz, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_LZ4)) { suffix = LZ4_EXTENSION; FIO_setCompressionType(FIO_lz4Compression); } /* behave like lz4 */
if (exeNameMatch(programName, ZSTD_UNLZ4)) { operation=zom_decompress; FIO_setCompressionType(FIO_lz4Compression); } /* behave like unlz4, also supports multiple formats */
memset(&compressionParams, 0, sizeof(compressionParams));
/* init crash handler */
FIO_addAbortHandler();
/* command switches */
for (argNb=1; argNb<argCount; argNb++) {
const char* argument = argv[argNb];
if(!argument) continue; /* Protection if argument empty */
if (nextArgumentsAreFiles==0) {
/* "-" means stdin/stdout */
if (!strcmp(argument, "-")){
if (!filenameIdx) {
filenameIdx=1, filenameTable[0]=stdinmark;
outFileName=stdoutmark;
g_displayLevel-=(g_displayLevel==2);
continue;
} }
/* Decode commands (note : aggregated commands are allowed) */
if (argument[0]=='-') {
if (argument[1]=='-') {
/* long commands (--long-word) */
if (!strcmp(argument, "--")) { nextArgumentsAreFiles=1; continue; } /* only file names allowed from now on */
if (!strcmp(argument, "--list")) { operation=zom_list; continue; }
if (!strcmp(argument, "--compress")) { operation=zom_compress; continue; }
if (!strcmp(argument, "--decompress")) { operation=zom_decompress; continue; }
if (!strcmp(argument, "--uncompress")) { operation=zom_decompress; continue; }
if (!strcmp(argument, "--force")) { FIO_overwriteMode(); forceStdout=1; followLinks=1; continue; }
if (!strcmp(argument, "--version")) { g_displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0); }
if (!strcmp(argument, "--help")) { g_displayOut=stdout; CLEAN_RETURN(usage_advanced(programName)); }
if (!strcmp(argument, "--verbose")) { g_displayLevel++; continue; }
if (!strcmp(argument, "--quiet")) { g_displayLevel--; continue; }
if (!strcmp(argument, "--stdout")) { forceStdout=1; outFileName=stdoutmark; g_displayLevel-=(g_displayLevel==2); continue; }
if (!strcmp(argument, "--ultra")) { ultra=1; continue; }
if (!strcmp(argument, "--check")) { FIO_setChecksumFlag(2); continue; }
if (!strcmp(argument, "--no-check")) { FIO_setChecksumFlag(0); continue; }
if (!strcmp(argument, "--sparse")) { FIO_setSparseWrite(2); continue; }
if (!strcmp(argument, "--no-sparse")) { FIO_setSparseWrite(0); continue; }
if (!strcmp(argument, "--test")) { operation=zom_test; continue; }
if (!strcmp(argument, "--train")) { operation=zom_train; if (outFileName==NULL) outFileName=g_defaultDictName; continue; }
if (!strcmp(argument, "--maxdict")) { nextArgumentIsMaxDict=1; lastCommand=1; continue; } /* kept available for compatibility with old syntax ; will be removed one day */
if (!strcmp(argument, "--dictID")) { nextArgumentIsDictID=1; lastCommand=1; continue; } /* kept available for compatibility with old syntax ; will be removed one day */
if (!strcmp(argument, "--no-dictID")) { FIO_setDictIDFlag(0); continue; }
if (!strcmp(argument, "--keep")) { FIO_setRemoveSrcFile(0); continue; }
if (!strcmp(argument, "--rm")) { FIO_setRemoveSrcFile(1); continue; }
if (!strcmp(argument, "--priority=rt")) { setRealTimePrio = 1; continue; }
if (!strcmp(argument, "--adapt")) { adapt = 1; continue; }
if (longCommandWArg(&argument, "--adapt=")) { adapt = 1; if (!parseAdaptParameters(argument, &adaptMin, &adaptMax)) CLEAN_RETURN(badusage(programName)); continue; }
if (!strcmp(argument, "--single-thread")) { nbWorkers = 0; singleThread = 1; continue; }
if (!strcmp(argument, "--format=zstd")) { suffix = ZSTD_EXTENSION; FIO_setCompressionType(FIO_zstdCompression); continue; }
#ifdef ZSTD_GZCOMPRESS
if (!strcmp(argument, "--format=gzip")) { suffix = GZ_EXTENSION; FIO_setCompressionType(FIO_gzipCompression); continue; }
#endif
#ifdef ZSTD_LZMACOMPRESS
if (!strcmp(argument, "--format=lzma")) { suffix = LZMA_EXTENSION; FIO_setCompressionType(FIO_lzmaCompression); continue; }
if (!strcmp(argument, "--format=xz")) { suffix = XZ_EXTENSION; FIO_setCompressionType(FIO_xzCompression); continue; }
#endif
#ifdef ZSTD_LZ4COMPRESS
if (!strcmp(argument, "--format=lz4")) { suffix = LZ4_EXTENSION; FIO_setCompressionType(FIO_lz4Compression); continue; }
#endif
if (!strcmp(argument, "--rsyncable")) { rsyncable = 1; continue; }
if (!strcmp(argument, "--no-progress")) { FIO_setNoProgress(1); continue; }
/* long commands with arguments */
#ifndef ZSTD_NODICT
if (longCommandWArg(&argument, "--train-cover")) {
operation = zom_train;
if (outFileName == NULL)
outFileName = g_defaultDictName;
dict = cover;
/* Allow optional arguments following an = */
if (*argument == 0) { memset(&coverParams, 0, sizeof(coverParams)); }
else if (*argument++ != '=') { CLEAN_RETURN(badusage(programName)); }
else if (!parseCoverParameters(argument, &coverParams)) { CLEAN_RETURN(badusage(programName)); }
continue;
}
if (longCommandWArg(&argument, "--train-fastcover")) {
operation = zom_train;
if (outFileName == NULL)
outFileName = g_defaultDictName;
dict = fastCover;
/* Allow optional arguments following an = */
if (*argument == 0) { memset(&fastCoverParams, 0, sizeof(fastCoverParams)); }
else if (*argument++ != '=') { CLEAN_RETURN(badusage(programName)); }
else if (!parseFastCoverParameters(argument, &fastCoverParams)) { CLEAN_RETURN(badusage(programName)); }
continue;
}
if (longCommandWArg(&argument, "--train-legacy")) {
operation = zom_train;
if (outFileName == NULL)
outFileName = g_defaultDictName;
dict = legacy;
/* Allow optional arguments following an = */
if (*argument == 0) { continue; }
else if (*argument++ != '=') { CLEAN_RETURN(badusage(programName)); }
else if (!parseLegacyParameters(argument, &dictSelect)) { CLEAN_RETURN(badusage(programName)); }
continue;
}
#endif
if (longCommandWArg(&argument, "--threads=")) { nbWorkers = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--memlimit=")) { memLimit = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--memory=")) { memLimit = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--memlimit-decompress=")) { memLimit = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--block-size=")) { blockSize = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--maxdict=")) { maxDictSize = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--dictID=")) { dictID = readU32FromChar(&argument); continue; }
if (longCommandWArg(&argument, "--zstd=")) { if (!parseCompressionParameters(argument, &compressionParams)) CLEAN_RETURN(badusage(programName)); continue; }
if (longCommandWArg(&argument, "--long")) {
unsigned ldmWindowLog = 0;
ldmFlag = 1;
/* Parse optional window log */
if (*argument == '=') {
++argument;
ldmWindowLog = readU32FromChar(&argument);
} else if (*argument != 0) {
/* Invalid character following --long */
CLEAN_RETURN(badusage(programName));
}
/* Only set windowLog if not already set by --zstd */
if (compressionParams.windowLog == 0)
compressionParams.windowLog = ldmWindowLog;
continue;
}
#ifndef ZSTD_NOCOMPRESS /* linking ZSTD_minCLevel() requires compression support */
if (longCommandWArg(&argument, "--fast")) {
/* Parse optional acceleration factor */
if (*argument == '=') {
U32 const maxFast = (U32)-ZSTD_minCLevel();
U32 fastLevel;
++argument;
fastLevel = readU32FromChar(&argument);
if (fastLevel > maxFast) fastLevel = maxFast;
if (fastLevel) {
dictCLevel = cLevel = -(int)fastLevel;
} else {
CLEAN_RETURN(badusage(programName));
}
} else if (*argument != 0) {
/* Invalid character following --fast */
CLEAN_RETURN(badusage(programName));
} else {
cLevel = -1; /* default for --fast */
}
continue;
}
#endif
/* fall-through, will trigger bad_usage() later on */
}
argument++;
while (argument[0]!=0) {
if (lastCommand) {
DISPLAY("error : command must be followed by argument \n");
CLEAN_RETURN(1);
}
#ifndef ZSTD_NOCOMPRESS
/* compression Level */
if ((*argument>='0') && (*argument<='9')) {
dictCLevel = cLevel = readU32FromChar(&argument);
continue;
}
#endif
switch(argument[0])
{
/* Display help */
case 'V': g_displayOut=stdout; printVersion(); CLEAN_RETURN(0); /* Version Only */
case 'H':
case 'h': g_displayOut=stdout; CLEAN_RETURN(usage_advanced(programName));
/* Compress */
case 'z': operation=zom_compress; argument++; break;
/* Decoding */
case 'd':
#ifndef ZSTD_NOBENCH
benchParams.mode = BMK_decodeOnly;
if (operation==zom_bench) { argument++; break; } /* benchmark decode (hidden option) */
#endif
operation=zom_decompress; argument++; break;
/* Force stdout, even if stdout==console */
case 'c': forceStdout=1; outFileName=stdoutmark; argument++; break;
/* Use file content as dictionary */
case 'D': nextEntryIsDictionary = 1; lastCommand = 1; argument++; break;
/* Overwrite */
case 'f': FIO_overwriteMode(); forceStdout=1; followLinks=1; argument++; break;
/* Verbose mode */
case 'v': g_displayLevel++; argument++; break;
/* Quiet mode */
case 'q': g_displayLevel--; argument++; break;
/* keep source file (default) */
case 'k': FIO_setRemoveSrcFile(0); argument++; break;
/* Checksum */
case 'C': FIO_setChecksumFlag(2); argument++; break;
/* test compressed file */
case 't': operation=zom_test; argument++; break;
/* destination file name */
case 'o': nextArgumentIsOutFileName=1; lastCommand=1; argument++; break;
/* limit decompression memory */
case 'M':
argument++;
memLimit = readU32FromChar(&argument);
break;
case 'l': operation=zom_list; argument++; break;
#ifdef UTIL_HAS_CREATEFILELIST
/* recursive */
case 'r': recursive=1; argument++; break;
#endif
#ifndef ZSTD_NOBENCH
/* Benchmark */
case 'b':
operation=zom_bench;
argument++;
break;
/* range bench (benchmark only) */
case 'e':
/* compression Level */
argument++;
cLevelLast = readU32FromChar(&argument);
break;
/* Modify Nb Iterations (benchmark only) */
case 'i':
argument++;
bench_nbSeconds = readU32FromChar(&argument);
break;
/* cut input into blocks (benchmark only) */
case 'B':
argument++;
blockSize = readU32FromChar(&argument);
break;
/* benchmark files separately (hidden option) */
case 'S':
argument++;
separateFiles = 1;
break;
#endif /* ZSTD_NOBENCH */
/* nb of threads (hidden option) */
case 'T':
argument++;
nbWorkers = readU32FromChar(&argument);
break;
/* Dictionary Selection level */
case 's':
argument++;
dictSelect = readU32FromChar(&argument);
break;
/* Pause at the end (-p) or set an additional param (-p#) (hidden option) */
case 'p': argument++;
#ifndef ZSTD_NOBENCH
if ((*argument>='0') && (*argument<='9')) {
benchParams.additionalParam = (int)readU32FromChar(&argument);
} else
#endif
main_pause=1;
break;
/* Select compressibility of synthetic sample */
case 'P':
{ argument++;
compressibility = (double)readU32FromChar(&argument) / 100;
}
break;
/* unknown command */
default : CLEAN_RETURN(badusage(programName));
}
}
continue;
} /* if (argument[0]=='-') */
if (nextArgumentIsMaxDict) { /* kept available for compatibility with old syntax ; will be removed one day */
nextArgumentIsMaxDict = 0;
lastCommand = 0;
maxDictSize = readU32FromChar(&argument);
continue;
}
if (nextArgumentIsDictID) { /* kept available for compatibility with old syntax ; will be removed one day */
nextArgumentIsDictID = 0;
lastCommand = 0;
dictID = readU32FromChar(&argument);
continue;
}
} /* if (nextArgumentIsAFile==0) */
if (nextEntryIsDictionary) {
nextEntryIsDictionary = 0;
lastCommand = 0;
dictFileName = argument;
continue;
}
if (nextArgumentIsOutFileName) {
nextArgumentIsOutFileName = 0;
lastCommand = 0;
outFileName = argument;
if (!strcmp(outFileName, "-")) outFileName = stdoutmark;
continue;
}
/* add filename to list */
filenameTable[filenameIdx++] = argument;
}
if (lastCommand) { /* forgotten argument */
DISPLAY("error : command must be followed by argument \n");
CLEAN_RETURN(1);
}
/* Welcome message (if verbose) */
DISPLAYLEVEL(3, WELCOME_MESSAGE);
#ifdef ZSTD_MULTITHREAD
if ((nbWorkers==0) && (!singleThread)) {
/* automatically set # workers based on # of reported cpus */
nbWorkers = UTIL_countPhysicalCores();
DISPLAYLEVEL(3, "Note: %d physical core(s) detected \n", nbWorkers);
}
#else
(void)singleThread; (void)nbWorkers;
#endif
#ifdef UTIL_HAS_CREATEFILELIST
g_utilDisplayLevel = g_displayLevel;
if (!followLinks) {
unsigned u;
for (u=0, fileNamesNb=0; u<filenameIdx; u++) {
if (UTIL_isLink(filenameTable[u])) {
DISPLAYLEVEL(2, "Warning : %s is a symbolic link, ignoring\n", filenameTable[u]);
} else {
filenameTable[fileNamesNb++] = filenameTable[u];
}
}
filenameIdx = fileNamesNb;
}
if (recursive) { /* at this stage, filenameTable is a list of paths, which can contain both files and directories */
extendedFileList = UTIL_createFileList(filenameTable, filenameIdx, &fileNamesBuf, &fileNamesNb, followLinks);
if (extendedFileList) {
unsigned u;
for (u=0; u<fileNamesNb; u++) DISPLAYLEVEL(4, "%u %s\n", u, extendedFileList[u]);
free((void*)filenameTable);
filenameTable = extendedFileList;
filenameIdx = fileNamesNb;
}
}
#else
(void)followLinks;
#endif
if (operation == zom_list) {
#ifndef ZSTD_NODECOMPRESS
int const ret = FIO_listMultipleFiles(filenameIdx, filenameTable, g_displayLevel);
CLEAN_RETURN(ret);
#else
DISPLAY("file information is not supported \n");
CLEAN_RETURN(1);
#endif
}
/* Check if benchmark is selected */
if (operation==zom_bench) {
#ifndef ZSTD_NOBENCH
benchParams.blockSize = blockSize;
benchParams.nbWorkers = nbWorkers;
benchParams.realTime = setRealTimePrio;
benchParams.nbSeconds = bench_nbSeconds;
benchParams.ldmFlag = ldmFlag;
benchParams.ldmMinMatch = g_ldmMinMatch;
benchParams.ldmHashLog = g_ldmHashLog;
if (g_ldmBucketSizeLog != LDM_PARAM_DEFAULT) {
benchParams.ldmBucketSizeLog = g_ldmBucketSizeLog;
}
if (g_ldmHashRateLog != LDM_PARAM_DEFAULT) {
benchParams.ldmHashRateLog = g_ldmHashRateLog;
}
if (cLevel > ZSTD_maxCLevel()) cLevel = ZSTD_maxCLevel();
if (cLevelLast > ZSTD_maxCLevel()) cLevelLast = ZSTD_maxCLevel();
if (cLevelLast < cLevel) cLevelLast = cLevel;
if (cLevelLast > cLevel)
DISPLAYLEVEL(3, "Benchmarking levels from %d to %d\n", cLevel, cLevelLast);
if(filenameIdx) {
if(separateFiles) {
unsigned i;
for(i = 0; i < filenameIdx; i++) {
int c;
DISPLAYLEVEL(3, "Benchmarking %s \n", filenameTable[i]);
for(c = cLevel; c <= cLevelLast; c++) {
BMK_benchFilesAdvanced(&filenameTable[i], 1, dictFileName, c, &compressionParams, g_displayLevel, &benchParams);
}
}
} else {
for(; cLevel <= cLevelLast; cLevel++) {
BMK_benchFilesAdvanced(filenameTable, filenameIdx, dictFileName, cLevel, &compressionParams, g_displayLevel, &benchParams);
}
}
} else {
for(; cLevel <= cLevelLast; cLevel++) {
BMK_syntheticTest(cLevel, compressibility, &compressionParams, g_displayLevel, &benchParams);
}
}
#else
(void)bench_nbSeconds; (void)blockSize; (void)setRealTimePrio; (void)separateFiles; (void)compressibility;
#endif
goto _end;
}
/* Check if dictionary builder is selected */
if (operation==zom_train) {
#ifndef ZSTD_NODICT
ZDICT_params_t zParams;
zParams.compressionLevel = dictCLevel;
zParams.notificationLevel = g_displayLevel;
zParams.dictID = dictID;
if (dict == cover) {
int const optimize = !coverParams.k || !coverParams.d;
coverParams.nbThreads = nbWorkers;
coverParams.zParams = zParams;
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenameTable, filenameIdx, blockSize, NULL, &coverParams, NULL, optimize);
} else if (dict == fastCover) {
int const optimize = !fastCoverParams.k || !fastCoverParams.d;
fastCoverParams.nbThreads = nbWorkers;
fastCoverParams.zParams = zParams;
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenameTable, filenameIdx, blockSize, NULL, NULL, &fastCoverParams, optimize);
} else {
ZDICT_legacy_params_t dictParams;
memset(&dictParams, 0, sizeof(dictParams));
dictParams.selectivityLevel = dictSelect;
dictParams.zParams = zParams;
operationResult = DiB_trainFromFiles(outFileName, maxDictSize, filenameTable, filenameIdx, blockSize, &dictParams, NULL, NULL, 0);
}
#else
(void)dictCLevel; (void)dictSelect; (void)dictID; (void)maxDictSize; /* not used when ZSTD_NODICT set */
DISPLAYLEVEL(1, "training mode not available \n");
operationResult = 1;
#endif
goto _end;
}
#ifndef ZSTD_NODECOMPRESS
if (operation==zom_test) { outFileName=nulmark; FIO_setRemoveSrcFile(0); } /* test mode */
#endif
/* No input filename ==> use stdin and stdout */
filenameIdx += !filenameIdx; /* filenameTable[0] is stdin by default */
if (!strcmp(filenameTable[0], stdinmark) && !outFileName)
outFileName = stdoutmark; /* when input is stdin, default output is stdout */
/* Check if input/output defined as console; trigger an error in this case */
if (!strcmp(filenameTable[0], stdinmark) && IS_CONSOLE(stdin) )
CLEAN_RETURN(badusage(programName));
if ( outFileName && !strcmp(outFileName, stdoutmark)
&& IS_CONSOLE(stdout)
&& !strcmp(filenameTable[0], stdinmark)
&& !forceStdout
&& operation!=zom_decompress )
CLEAN_RETURN(badusage(programName));
#ifndef ZSTD_NOCOMPRESS
/* check compression level limits */
{ int const maxCLevel = ultra ? ZSTD_maxCLevel() : ZSTDCLI_CLEVEL_MAX;
if (cLevel > maxCLevel) {
DISPLAYLEVEL(2, "Warning : compression level higher than max, reduced to %i \n", maxCLevel);
cLevel = maxCLevel;
} }
#endif
/* No status message in pipe mode (stdin - stdout) or multi-files mode */
if (!strcmp(filenameTable[0], stdinmark) && outFileName && !strcmp(outFileName,stdoutmark) && (g_displayLevel==2)) g_displayLevel=1;
if ((filenameIdx>1) & (g_displayLevel==2)) g_displayLevel=1;
/* IO Stream/File */
FIO_setNotificationLevel(g_displayLevel);
if (operation==zom_compress) {
#ifndef ZSTD_NOCOMPRESS
FIO_setNbWorkers(nbWorkers);
FIO_setBlockSize((U32)blockSize);
if (g_overlapLog!=OVERLAP_LOG_DEFAULT) FIO_setOverlapLog(g_overlapLog);
FIO_setLdmFlag(ldmFlag);
FIO_setLdmHashLog(g_ldmHashLog);
FIO_setLdmMinMatch(g_ldmMinMatch);
if (g_ldmBucketSizeLog != LDM_PARAM_DEFAULT) FIO_setLdmBucketSizeLog(g_ldmBucketSizeLog);
if (g_ldmHashRateLog != LDM_PARAM_DEFAULT) FIO_setLdmHashRateLog(g_ldmHashRateLog);
FIO_setAdaptiveMode(adapt);
FIO_setAdaptMin(adaptMin);
FIO_setAdaptMax(adaptMax);
FIO_setRsyncable(rsyncable);
if (adaptMin > cLevel) cLevel = adaptMin;
if (adaptMax < cLevel) cLevel = adaptMax;
if ((filenameIdx==1) && outFileName)
operationResult = FIO_compressFilename(outFileName, filenameTable[0], dictFileName, cLevel, compressionParams);
else
operationResult = FIO_compressMultipleFilenames(filenameTable, filenameIdx, outFileName, suffix, dictFileName, cLevel, compressionParams);
#else
(void)suffix; (void)adapt; (void)rsyncable; (void)ultra; (void)cLevel; (void)ldmFlag; /* not used when ZSTD_NOCOMPRESS set */
DISPLAY("Compression not supported \n");
#endif
} else { /* decompression or test */
#ifndef ZSTD_NODECOMPRESS
if (memLimit == 0) {
if (compressionParams.windowLog == 0)
memLimit = (U32)1 << g_defaultMaxWindowLog;
else {
memLimit = (U32)1 << (compressionParams.windowLog & 31);
}
}
FIO_setMemLimit(memLimit);
if (filenameIdx==1 && outFileName)
operationResult = FIO_decompressFilename(outFileName, filenameTable[0], dictFileName);
else
operationResult = FIO_decompressMultipleFilenames(filenameTable, filenameIdx, outFileName, dictFileName);
#else
DISPLAY("Decompression not supported \n");
#endif
}
_end:
if (main_pause) waitEnter();
#ifdef UTIL_HAS_CREATEFILELIST
if (extendedFileList)
UTIL_freeFileList(extendedFileList, fileNamesBuf);
else
#endif
free((void*)filenameTable);
return operationResult;
}
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