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zstdcli.c
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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
* 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
#ifndef ZSTDCLI_NBTHREADS_DEFAULT
# define ZSTDCLI_NBTHREADS_DEFAULT 1
#endif
/*-************************************
* Dependencies
**************************************/
#include "platform.h" /* PLATFORM_POSIX_VERSION */
#include "util.h" /* UTIL_HAS_CREATEFILELIST, UTIL_createFileList, UTIL_isConsole */
#include <stdlib.h> /* getenv */
#include <string.h> /* strcmp, strlen */
#include <stdio.h> /* fprintf(), stdin, stdout, stderr */
#include <errno.h> /* errno */
#include <assert.h> /* assert */
#include "fileio.h" /* stdinmark, stdoutmark, ZSTD_EXTENSION */
#ifndef ZSTD_NOBENCH
# include "benchzstd.h" /* BMK_benchFilesAdvanced */
#endif
#ifndef ZSTD_NODICT
# include "dibio.h" /* ZDICT_cover_params_t, DiB_trainFromFiles() */
#endif
#ifndef ZSTD_NOTRACE
# include "zstdcli_trace.h"
#endif
#include "../lib/zstd.h" /* ZSTD_VERSION_STRING, ZSTD_minCLevel, ZSTD_maxCLevel */
#include "fileio_asyncio.h"
/*-************************************
* Constants
**************************************/
#define COMPRESSOR_NAME "Zstandard CLI"
#ifndef ZSTD_VERSION
# define ZSTD_VERSION "v" ZSTD_VERSION_STRING
#endif
#define AUTHOR "Yann Collet"
#define WELCOME_MESSAGE "*** %s (%i-bit) %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_F(f, ...) fprintf((f), __VA_ARGS__)
#define DISPLAYOUT(...) DISPLAY_F(stdout, __VA_ARGS__)
#define DISPLAY(...) DISPLAY_F(stderr, __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 */
/*-************************************
* Check Version (when CLI linked to dynamic library)
**************************************/
/* Due to usage of experimental symbols and capabilities by the CLI,
* the CLI must be linked against a dynamic library of same version */
static void checkLibVersion(void)
{
if (strcmp(ZSTD_VERSION_STRING, ZSTD_versionString())) {
DISPLAYLEVEL(1, "Error : incorrect library version (expecting : %s ; actual : %s ) \n",
ZSTD_VERSION_STRING, ZSTD_versionString());
DISPLAYLEVEL(1, "Please update library to version %s, or use stand-alone zstd binary \n",
ZSTD_VERSION_STRING);
exit(1);
}
}
/*! 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)] == '.');
}
/*-************************************
* Command Line
**************************************/
/* print help either in `stderr` or `stdout` depending on originating request
* error (badusage) => stderr
* help (usage_advanced) => stdout
*/
static void usage(FILE* f, const char* programName)
{
DISPLAY_F(f, "Compress or decompress the INPUT file(s); reads from STDIN if INPUT is `-` or not provided.\n\n");
DISPLAY_F(f, "Usage: %s [OPTIONS...] [INPUT... | -] [-o OUTPUT]\n\n", programName);
DISPLAY_F(f, "Options:\n");
DISPLAY_F(f, " -o OUTPUT Write output to a single file, OUTPUT.\n");
DISPLAY_F(f, " -k, --keep Preserve INPUT file(s). [Default] \n");
DISPLAY_F(f, " --rm Remove INPUT file(s) after successful (de)compression.\n");
#ifdef ZSTD_GZCOMPRESS
if (exeNameMatch(programName, ZSTD_GZ)) { /* behave like gzip */
DISPLAY_F(f, " -n, --no-name Do not store original filename when compressing.\n\n");
}
#endif
DISPLAY_F(f, "\n");
#ifndef ZSTD_NOCOMPRESS
DISPLAY_F(f, " -# Desired compression level, where `#` is a number between 1 and %d;\n", ZSTDCLI_CLEVEL_MAX);
DISPLAY_F(f, " lower numbers provide faster compression, higher numbers yield\n");
DISPLAY_F(f, " better compression ratios. [Default: %d]\n\n", ZSTDCLI_CLEVEL_DEFAULT);
#endif
#ifndef ZSTD_NODECOMPRESS
DISPLAY_F(f, " -d, --decompress Perform decompression.\n");
#endif
DISPLAY_F(f, " -D DICT Use DICT as the dictionary for compression or decompression.\n\n");
DISPLAY_F(f, " -f, --force Disable input and output checks. Allows overwriting existing files,\n");
DISPLAY_F(f, " receiving input from the console, printing output to STDOUT, and\n");
DISPLAY_F(f, " operating on links, block devices, etc. Unrecognized formats will be\n");
DISPLAY_F(f, " passed-through through as-is.\n\n");
DISPLAY_F(f, " -h Display short usage and exit.\n");
DISPLAY_F(f, " -H, --help Display full help and exit.\n");
DISPLAY_F(f, " -V, --version Display the program version and exit.\n");
DISPLAY_F(f, "\n");
}
static void usage_advanced(const char* programName)
{
DISPLAYOUT(WELCOME_MESSAGE);
DISPLAYOUT("\n");
usage(stdout, programName);
DISPLAYOUT("Advanced options:\n");
DISPLAYOUT(" -c, --stdout Write to STDOUT (even if it is a console) and keep the INPUT file(s).\n\n");
DISPLAYOUT(" -v, --verbose Enable verbose output; pass multiple times to increase verbosity.\n");
DISPLAYOUT(" -q, --quiet Suppress warnings; pass twice to suppress errors.\n");
#ifndef ZSTD_NOTRACE
DISPLAYOUT(" --trace LOG Log tracing information to LOG.\n");
#endif
DISPLAYOUT("\n");
DISPLAYOUT(" --[no-]progress Forcibly show/hide the progress counter. NOTE: Any (de)compressed\n");
DISPLAYOUT(" output to terminal will mix with progress counter text.\n\n");
#ifdef UTIL_HAS_CREATEFILELIST
DISPLAYOUT(" -r Operate recursively on directories.\n");
DISPLAYOUT(" --filelist LIST Read a list of files to operate on from LIST.\n");
DISPLAYOUT(" --output-dir-flat DIR Store processed files in DIR.\n");
#endif
#ifdef UTIL_HAS_MIRRORFILELIST
DISPLAYOUT(" --output-dir-mirror DIR Store processed files in DIR, respecting original directory structure.\n");
#endif
if (AIO_supported())
DISPLAYOUT(" --[no-]asyncio Use asynchronous IO. [Default: Enabled]\n");
DISPLAYOUT("\n");
#ifndef ZSTD_NOCOMPRESS
DISPLAYOUT(" --[no-]check Add XXH64 integrity checksums during compression. [Default: Add, Validate]\n");
#ifndef ZSTD_NODECOMPRESS
DISPLAYOUT(" If `-d` is present, ignore/validate checksums during decompression.\n");
#endif
#else
#ifdef ZSTD_NOCOMPRESS
DISPLAYOUT(" --[no-]check Ignore/validate checksums during decompression. [Default: Validate]");
#endif
#endif /* ZSTD_NOCOMPRESS */
DISPLAYOUT("\n");
DISPLAYOUT(" -- Treat remaining arguments after `--` as files.\n");
#ifndef ZSTD_NOCOMPRESS
DISPLAYOUT("\n");
DISPLAYOUT("Advanced compression options:\n");
DISPLAYOUT(" --ultra Enable levels beyond %i, up to %i; requires more memory.\n", ZSTDCLI_CLEVEL_MAX, ZSTD_maxCLevel());
DISPLAYOUT(" --fast[=#] Use to very fast compression levels. [Default: %u]\n", 1);
#ifdef ZSTD_GZCOMPRESS
if (exeNameMatch(programName, ZSTD_GZ)) { /* behave like gzip */
DISPLAYOUT(" --best Compatibility alias for `-9`.\n");
}
#endif
DISPLAYOUT(" --adapt Dynamically adapt compression level to I/O conditions.\n");
DISPLAYOUT(" --long[=#] Enable long distance matching with window log #. [Default: %u]\n", g_defaultMaxWindowLog);
DISPLAYOUT(" --patch-from=REF Use REF as the reference point for Zstandard's diff engine. \n\n");
# ifdef ZSTD_MULTITHREAD
DISPLAYOUT(" -T# Spawn # compression threads. [Default: 1; pass 0 for core count.]\n");
DISPLAYOUT(" --single-thread Share a single thread for I/O and compression (slightly different than `-T1`).\n");
DISPLAYOUT(" --auto-threads={physical|logical}\n");
DISPLAYOUT(" Use physical/logical cores when using `-T0`. [Default: Physical]\n\n");
DISPLAYOUT(" -B# Set job size to #. [Default: 0 (automatic)]\n");
DISPLAYOUT(" --rsyncable Compress using a rsync-friendly method (`-B` sets block size). \n");
DISPLAYOUT("\n");
# endif
DISPLAYOUT(" --exclude-compressed Only compress files that are not already compressed.\n\n");
DISPLAYOUT(" --stream-size=# Specify size of streaming input from STDIN.\n");
DISPLAYOUT(" --size-hint=# Optimize compression parameters for streaming input of approximately size #.\n");
DISPLAYOUT(" --target-compressed-block-size=#\n");
DISPLAYOUT(" Generate compressed blocks of approximately # size.\n\n");
DISPLAYOUT(" --no-dictID Don't write `dictID` into the header (dictionary compression only).\n");
DISPLAYOUT(" --[no-]compress-literals Force (un)compressed literals.\n");
DISPLAYOUT(" --[no-]row-match-finder Explicitly enable/disable the fast, row-based matchfinder for\n");
DISPLAYOUT(" the 'greedy', 'lazy', and 'lazy2' strategies.\n");
DISPLAYOUT("\n");
DISPLAYOUT(" --format=zstd Compress files to the `.zst` format. [Default]\n");
DISPLAYOUT(" --[no-]mmap-dict Memory-map dictionary file rather than mallocing and loading all at once\n");
#ifdef ZSTD_GZCOMPRESS
DISPLAYOUT(" --format=gzip Compress files to the `.gz` format.\n");
#endif
#ifdef ZSTD_LZMACOMPRESS
DISPLAYOUT(" --format=xz Compress files to the `.xz` format.\n");
DISPLAYOUT(" --format=lzma Compress files to the `.lzma` format.\n");
#endif
#ifdef ZSTD_LZ4COMPRESS
DISPLAYOUT( " --format=lz4 Compress files to the `.lz4` format.\n");
#endif
#endif /* !ZSTD_NOCOMPRESS */
#ifndef ZSTD_NODECOMPRESS
DISPLAYOUT("\n");
DISPLAYOUT("Advanced decompression options:\n");
DISPLAYOUT(" -l Print information about Zstandard-compressed files.\n");
DISPLAYOUT(" --test Test compressed file integrity.\n");
DISPLAYOUT(" -M# Set the memory usage limit to # megabytes.\n");
# if ZSTD_SPARSE_DEFAULT
DISPLAYOUT(" --[no-]sparse Enable sparse mode. [Default: Enabled for files, disabled for STDOUT.]\n");
# else
DISPLAYOUT(" --[no-]sparse Enable sparse mode. [Default: Disabled]\n");
# endif
{
char const* passThroughDefault = "Disabled";
if (exeNameMatch(programName, ZSTD_CAT) ||
exeNameMatch(programName, ZSTD_ZCAT) ||
exeNameMatch(programName, ZSTD_GZCAT)) {
passThroughDefault = "Enabled";
}
DISPLAYOUT(" --[no-]pass-through Pass through uncompressed files as-is. [Default: %s]\n", passThroughDefault);
}
#endif /* ZSTD_NODECOMPRESS */
#ifndef ZSTD_NODICT
DISPLAYOUT("\n");
DISPLAYOUT("Dictionary builder:\n");
DISPLAYOUT(" --train Create a dictionary from a training set of files.\n\n");
DISPLAYOUT(" --train-cover[=k=#,d=#,steps=#,split=#,shrink[=#]]\n");
DISPLAYOUT(" Use the cover algorithm (with optional arguments).\n");
DISPLAYOUT(" --train-fastcover[=k=#,d=#,f=#,steps=#,split=#,accel=#,shrink[=#]]\n");
DISPLAYOUT(" Use the fast cover algorithm (with optional arguments).\n\n");
DISPLAYOUT(" --train-legacy[=s=#] Use the legacy algorithm with selectivity #. [Default: %u]\n", g_defaultSelectivityLevel);
DISPLAYOUT(" -o NAME Use NAME as dictionary name. [Default: %s]\n", g_defaultDictName);
DISPLAYOUT(" --maxdict=# Limit dictionary to specified size #. [Default: %u]\n", g_defaultMaxDictSize);
DISPLAYOUT(" --dictID=# Force dictionary ID to #. [Default: Random]\n");
#endif
#ifndef ZSTD_NOBENCH
DISPLAYOUT("\n");
DISPLAYOUT("Benchmark options:\n");
DISPLAYOUT(" -b# Perform benchmarking with compression level #. [Default: %d]\n", ZSTDCLI_CLEVEL_DEFAULT);
DISPLAYOUT(" -e# Test all compression levels up to #; starting level is `-b#`. [Default: 1]\n");
DISPLAYOUT(" -i# Set the minimum evaluation to time # seconds. [Default: 3]\n");
DISPLAYOUT(" -B# Cut file into independent chunks of size #. [Default: No chunking]\n");
DISPLAYOUT(" -S Output one benchmark result per input file. [Default: Consolidated result]\n");
DISPLAYOUT(" --priority=rt Set process priority to real-time.\n");
#endif
}
static void badusage(const char* programName)
{
DISPLAYLEVEL(1, "Incorrect parameters \n");
if (g_displayLevel >= 2) usage(stderr, programName);
}
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;
}
static void errorOut(const char* msg)
{
DISPLAYLEVEL(1, "%s \n", msg); exit(1);
}
/*! readU32FromCharChecked() :
* @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 readU32FromCharChecked(const char** stringPtr, unsigned* value)
{
unsigned result = 0;
while ((**stringPtr >='0') && (**stringPtr <='9')) {
unsigned const max = ((unsigned)(-1)) / 10;
unsigned last = result;
if (result > max) return 1; /* overflow error */
result *= 10;
result += (unsigned)(**stringPtr - '0');
if (result < last) return 1; /* overflow error */
(*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 overflows 32-bit unsigned int";
unsigned result;
if (readU32FromCharChecked(stringPtr, &result)) { errorOut(errorMsg); }
return result;
}
/*! readIntFromChar() :
* @return : signed 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 int readIntFromChar(const char** stringPtr) {
static const char errorMsg[] = "error: numeric value overflows 32-bit int";
int sign = 1;
unsigned result;
if (**stringPtr=='-') {
(*stringPtr)++;
sign = -1;
}
if (readU32FromCharChecked(stringPtr, &result)) { errorOut(errorMsg); }
return (int) result * sign;
}
/*! readSizeTFromCharChecked() :
* @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 readSizeTFromCharChecked(const char** stringPtr, size_t* value)
{
size_t result = 0;
while ((**stringPtr >='0') && (**stringPtr <='9')) {
size_t const max = ((size_t)(-1)) / 10;
size_t last = result;
if (result > max) return 1; /* overflow error */
result *= 10;
result += (size_t)(**stringPtr - '0');
if (result < last) return 1; /* overflow error */
(*stringPtr)++ ;
}
if ((**stringPtr=='K') || (**stringPtr=='M')) {
size_t const maxK = ((size_t)(-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;
}
/*! readSizeTFromChar() :
* @return : size_t 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 size_t readSizeTFromChar(const char** stringPtr) {
static const char errorMsg[] = "error: numeric value overflows size_t";
size_t result;
if (readSizeTFromCharChecked(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 int 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
static const unsigned kDefaultRegression = 1;
/**
* 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;
}
if (longCommandWArg(&stringPtr, "shrink")) {
params->shrinkDictMaxRegression = kDefaultRegression;
params->shrinkDict = 1;
if (stringPtr[0]=='=') {
stringPtr++;
params->shrinkDictMaxRegression = readU32FromChar(&stringPtr);
}
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\nshrink%u\n", params->k, params->d, params->steps, (unsigned)(params->splitPoint * 100), params->shrinkDictMaxRegression);
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;
}
if (longCommandWArg(&stringPtr, "shrink")) {
params->shrinkDictMaxRegression = kDefaultRegression;
params->shrinkDict = 1;
if (stringPtr[0]=='=') {
stringPtr++;
params->shrinkDictMaxRegression = readU32FromChar(&stringPtr);
}
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\nshrink=%u\n", params->k, params->d, params->f, params->steps, (unsigned)(params->splitPoint * 100), params->accel, params->shrinkDictMaxRegression);
return 1;
}
/**
* parseLegacyParameters() :
* reads legacy dictionary builder 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(¶ms, 0, sizeof(params));
params.d = 8;
params.steps = 4;
params.splitPoint = 1.0;
params.shrinkDict = 0;
params.shrinkDictMaxRegression = kDefaultRegression;
return params;
}
static ZDICT_fastCover_params_t defaultFastCoverParams(void)
{
ZDICT_fastCover_params_t params;
memset(¶ms, 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;
params.shrinkDict = 0;
params.shrinkDictMaxRegression = kDefaultRegression;
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 = readIntFromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "max=")) { *adaptMaxPtr = readIntFromChar(&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)
{
if (g_displayLevel < DISPLAY_LEVEL_DEFAULT) {
DISPLAYOUT("%s\n", ZSTD_VERSION_STRING);
return;
}
DISPLAYOUT(WELCOME_MESSAGE);
if (g_displayLevel >= 3) {
/* format support */
DISPLAYOUT("*** supports: zstd");
#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>0) && (ZSTD_LEGACY_SUPPORT<8)
DISPLAYOUT(", zstd legacy v0.%d+", ZSTD_LEGACY_SUPPORT);
#endif
#ifdef ZSTD_GZCOMPRESS
DISPLAYOUT(", gzip");
#endif
#ifdef ZSTD_LZ4COMPRESS
DISPLAYOUT(", lz4");
#endif
#ifdef ZSTD_LZMACOMPRESS
DISPLAYOUT(", lzma, xz ");
#endif
DISPLAYOUT("\n");
if (g_displayLevel >= 4) {
/* library versions */
DISPLAYOUT("zlib version %s\n", FIO_zlibVersion());
DISPLAYOUT("lz4 version %s\n", FIO_lz4Version());
DISPLAYOUT("lzma version %s\n", FIO_lzmaVersion());
/* posix support */
#ifdef _POSIX_C_SOURCE
DISPLAYOUT("_POSIX_C_SOURCE defined: %ldL\n", (long) _POSIX_C_SOURCE);
#endif
#ifdef _POSIX_VERSION
DISPLAYOUT("_POSIX_VERSION defined: %ldL \n", (long) _POSIX_VERSION);
#endif
#ifdef PLATFORM_POSIX_VERSION
DISPLAYOUT("PLATFORM_POSIX_VERSION defined: %ldL\n", (long) PLATFORM_POSIX_VERSION);
#endif
} }
}
#define ZSTD_NB_STRATEGIES 9
static const char* ZSTD_strategyMap[ZSTD_NB_STRATEGIES + 1] = { "", "ZSTD_fast",
"ZSTD_dfast", "ZSTD_greedy", "ZSTD_lazy", "ZSTD_lazy2", "ZSTD_btlazy2",
"ZSTD_btopt", "ZSTD_btultra", "ZSTD_btultra2"};
#ifndef ZSTD_NOCOMPRESS
static void printDefaultCParams(const char* filename, const char* dictFileName, int cLevel) {
unsigned long long fileSize = UTIL_getFileSize(filename);
const size_t dictSize = dictFileName != NULL ? (size_t)UTIL_getFileSize(dictFileName) : 0;
const ZSTD_compressionParameters cParams = ZSTD_getCParams(cLevel, fileSize, dictSize);
if (fileSize != UTIL_FILESIZE_UNKNOWN) DISPLAY("%s (%u bytes)\n", filename, (unsigned)fileSize);
else DISPLAY("%s (src size unknown)\n", filename);
DISPLAY(" - windowLog : %u\n", cParams.windowLog);
DISPLAY(" - chainLog : %u\n", cParams.chainLog);
DISPLAY(" - hashLog : %u\n", cParams.hashLog);
DISPLAY(" - searchLog : %u\n", cParams.searchLog);
DISPLAY(" - minMatch : %u\n", cParams.minMatch);
DISPLAY(" - targetLength : %u\n", cParams.targetLength);
assert(cParams.strategy < ZSTD_NB_STRATEGIES + 1);
DISPLAY(" - strategy : %s (%u)\n", ZSTD_strategyMap[(int)cParams.strategy], (unsigned)cParams.strategy);
}
static void printActualCParams(const char* filename, const char* dictFileName, int cLevel, const ZSTD_compressionParameters* cParams) {
unsigned long long fileSize = UTIL_getFileSize(filename);
const size_t dictSize = dictFileName != NULL ? (size_t)UTIL_getFileSize(dictFileName) : 0;
ZSTD_compressionParameters actualCParams = ZSTD_getCParams(cLevel, fileSize, dictSize);
assert(g_displayLevel >= 4);
actualCParams.windowLog = cParams->windowLog == 0 ? actualCParams.windowLog : cParams->windowLog;
actualCParams.chainLog = cParams->chainLog == 0 ? actualCParams.chainLog : cParams->chainLog;
actualCParams.hashLog = cParams->hashLog == 0 ? actualCParams.hashLog : cParams->hashLog;
actualCParams.searchLog = cParams->searchLog == 0 ? actualCParams.searchLog : cParams->searchLog;
actualCParams.minMatch = cParams->minMatch == 0 ? actualCParams.minMatch : cParams->minMatch;
actualCParams.targetLength = cParams->targetLength == 0 ? actualCParams.targetLength : cParams->targetLength;
actualCParams.strategy = cParams->strategy == 0 ? actualCParams.strategy : cParams->strategy;
DISPLAY("--zstd=wlog=%d,clog=%d,hlog=%d,slog=%d,mml=%d,tlen=%d,strat=%d\n",
actualCParams.windowLog, actualCParams.chainLog, actualCParams.hashLog, actualCParams.searchLog,
actualCParams.minMatch, actualCParams.targetLength, actualCParams.strategy);
}
#endif
/* Environment variables for parameter setting */
#define ENV_CLEVEL "ZSTD_CLEVEL"
#define ENV_NBTHREADS "ZSTD_NBTHREADS" /* takes lower precedence than directly specifying -T# in the CLI */
/* pick up environment variable */
static int init_cLevel(void) {
const char* const env = getenv(ENV_CLEVEL);
if (env != NULL) {
const char* ptr = env;
int sign = 1;
if (*ptr == '-') {
sign = -1;
ptr++;
} else if (*ptr == '+') {
ptr++;
}
if ((*ptr>='0') && (*ptr<='9')) {
unsigned absLevel;
if (readU32FromCharChecked(&ptr, &absLevel)) {
DISPLAYLEVEL(2, "Ignore environment variable setting %s=%s: numeric value too large \n", ENV_CLEVEL, env);
return ZSTDCLI_CLEVEL_DEFAULT;
} else if (*ptr == 0) {
return sign * (int)absLevel;
} }
DISPLAYLEVEL(2, "Ignore environment variable setting %s=%s: not a valid integer value \n", ENV_CLEVEL, env);
}
return ZSTDCLI_CLEVEL_DEFAULT;
}
#ifdef ZSTD_MULTITHREAD
static unsigned init_nbThreads(void) {
const char* const env = getenv(ENV_NBTHREADS);
if (env != NULL) {
const char* ptr = env;
if ((*ptr>='0') && (*ptr<='9')) {
unsigned nbThreads;
if (readU32FromCharChecked(&ptr, &nbThreads)) {
DISPLAYLEVEL(2, "Ignore environment variable setting %s=%s: numeric value too large \n", ENV_NBTHREADS, env);
return ZSTDCLI_NBTHREADS_DEFAULT;
} else if (*ptr == 0) {
return nbThreads;
}
}
DISPLAYLEVEL(2, "Ignore environment variable setting %s=%s: not a valid unsigned value \n", ENV_NBTHREADS, env);
}
return ZSTDCLI_NBTHREADS_DEFAULT;
}
#endif
#define NEXT_FIELD(ptr) { \
if (*argument == '=') { \
ptr = ++argument; \
argument += strlen(ptr); \
} else { \
argNb++; \
if (argNb >= argCount) { \
DISPLAYLEVEL(1, "error: missing command argument \n"); \
CLEAN_RETURN(1); \
} \
ptr = argv[argNb]; \
assert(ptr != NULL); \
if (ptr[0]=='-') { \
DISPLAYLEVEL(1, "error: command cannot be separated from its argument by another command \n"); \
CLEAN_RETURN(1); \
} } }
#define NEXT_UINT32(val32) { \
const char* __nb; \
NEXT_FIELD(__nb); \
val32 = readU32FromChar(&__nb); \
if(*__nb != 0) { \
errorOut("error: only numeric values with optional suffixes K, KB, KiB, M, MB, MiB are allowed"); \
} \
}
#define NEXT_TSIZE(valTsize) { \
const char* __nb; \
NEXT_FIELD(__nb); \
valTsize = readSizeTFromChar(&__nb); \
if(*__nb != 0) { \
errorOut("error: only numeric values with optional suffixes K, KB, KiB, M, MB, MiB are allowed"); \
} \
}
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 -99
# define MAXCLEVEL 22
#else
# define MINCLEVEL ZSTD_minCLevel()
# define MAXCLEVEL ZSTD_maxCLevel()
#endif
int main(int argCount, const char* argv[])
{
int argNb,
followLinks = 0,
allowBlockDevices = 0,
forceStdin = 0,
forceStdout = 0,
hasStdout = 0,
ldmFlag = 0,
main_pause = 0,
adapt = 0,
adaptMin = MINCLEVEL,
adaptMax = MAXCLEVEL,
rsyncable = 0,
nextArgumentsAreFiles = 0,
operationResult = 0,
separateFiles = 0,
setRealTimePrio = 0,
singleThread = 0,
defaultLogicalCores = 0,
showDefaultCParams = 0,
ultra=0,
contentSize=1,
removeSrcFile=0;
ZSTD_paramSwitch_e mmapDict=ZSTD_ps_auto;
ZSTD_paramSwitch_e useRowMatchFinder = ZSTD_ps_auto;
FIO_compressionType_t cType = FIO_zstdCompression;
unsigned nbWorkers = 0;
double compressibility = 0.5;
unsigned bench_nbSeconds = 3; /* would be better if this value was synchronized from bench */
size_t blockSize = 0;
FIO_prefs_t* const prefs = FIO_createPreferences();
FIO_ctx_t* const fCtx = FIO_createContext();
FIO_progressSetting_e progress = FIO_ps_auto;
zstd_operation_mode operation = zom_compress;
ZSTD_compressionParameters compressionParams;
int cLevel = init_cLevel();
int cLevelLast = MINCLEVEL - 1; /* lower than minimum */
unsigned recursive = 0;
unsigned memLimit = 0;
FileNamesTable* filenames = UTIL_allocateFileNamesTable((size_t)argCount); /* argCount >= 1 */
FileNamesTable* file_of_names = UTIL_allocateFileNamesTable((size_t)argCount); /* argCount >= 1 */
const char* programName = argv[0];
const char* outFileName = NULL;
const char* outDirName = NULL;
const char* outMirroredDirName = NULL;
const char* dictFileName = NULL;
const char* patchFromDictFileName = NULL;
const char* suffix = ZSTD_EXTENSION;
unsigned maxDictSize = g_defaultMaxDictSize;
unsigned dictID = 0;
size_t streamSrcSize = 0;
size_t targetCBlockSize = 0;
size_t srcSizeHint = 0;
size_t nbInputFileNames = 0;
int dictCLevel = g_defaultDictCLevel;
unsigned dictSelect = g_defaultSelectivityLevel;
#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
ZSTD_paramSwitch_e literalCompressionMode = ZSTD_ps_auto;
/* init */
checkLibVersion();
(void)recursive; (void)cLevelLast; /* not used when ZSTD_NOBENCH set */
(void)memLimit;
assert(argCount >= 1);
if ((filenames==NULL) || (file_of_names==NULL)) { DISPLAYLEVEL(1, "zstd: allocation error \n"); exit(1); }
programName = lastNameFromPath(programName);
#ifdef ZSTD_MULTITHREAD
nbWorkers = init_nbThreads();
#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; FIO_overwriteMode(prefs); forceStdout=1; followLinks=1; FIO_setPassThroughFlag(prefs, 1); outFileName=stdoutmark; g_displayLevel=1; } /* supports multiple formats */
if (exeNameMatch(programName, ZSTD_ZCAT)) { operation=zom_decompress; FIO_overwriteMode(prefs); forceStdout=1; followLinks=1; FIO_setPassThroughFlag(prefs, 1); outFileName=stdoutmark; g_displayLevel=1; } /* behave like zcat, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_GZ)) { /* behave like gzip */
suffix = GZ_EXTENSION; cType = FIO_gzipCompression; removeSrcFile=1;
dictCLevel = cLevel = 6; /* gzip default is -6 */
}
if (exeNameMatch(programName, ZSTD_GUNZIP)) { operation=zom_decompress; removeSrcFile=1; } /* behave like gunzip, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_GZCAT)) { operation=zom_decompress; FIO_overwriteMode(prefs); forceStdout=1; followLinks=1; FIO_setPassThroughFlag(prefs, 1); outFileName=stdoutmark; g_displayLevel=1; } /* behave like gzcat, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_LZMA)) { suffix = LZMA_EXTENSION; cType = FIO_lzmaCompression; removeSrcFile=1; } /* behave like lzma */
if (exeNameMatch(programName, ZSTD_UNLZMA)) { operation=zom_decompress; cType = FIO_lzmaCompression; removeSrcFile=1; } /* behave like unlzma, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_XZ)) { suffix = XZ_EXTENSION; cType = FIO_xzCompression; removeSrcFile=1; } /* behave like xz */
if (exeNameMatch(programName, ZSTD_UNXZ)) { operation=zom_decompress; cType = FIO_xzCompression; removeSrcFile=1; } /* behave like unxz, also supports multiple formats */
if (exeNameMatch(programName, ZSTD_LZ4)) { suffix = LZ4_EXTENSION; cType = FIO_lz4Compression; } /* behave like lz4 */
if (exeNameMatch(programName, ZSTD_UNLZ4)) { operation=zom_decompress; cType = 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) {
UTIL_refFilename(filenames, argument);
continue;
}
/* "-" means stdin/stdout */
if (!strcmp(argument, "-")){
UTIL_refFilename(filenames, stdinmark);
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(prefs); forceStdin=1; forceStdout=1; followLinks=1; allowBlockDevices=1; continue; }
if (!strcmp(argument, "--version")) { printVersion(); CLEAN_RETURN(0); }
if (!strcmp(argument, "--help")) { usage_advanced(programName); CLEAN_RETURN(0); }
if (!strcmp(argument, "--verbose")) { g_displayLevel++; continue; }
if (!strcmp(argument, "--quiet")) { g_displayLevel--; continue; }
if (!strcmp(argument, "--stdout")) { forceStdout=1; outFileName=stdoutmark; removeSrcFile=0; continue; }
if (!strcmp(argument, "--ultra")) { ultra=1; continue; }
if (!strcmp(argument, "--check")) { FIO_setChecksumFlag(prefs, 2); continue; }
if (!strcmp(argument, "--no-check")) { FIO_setChecksumFlag(prefs, 0); continue; }
if (!strcmp(argument, "--sparse")) { FIO_setSparseWrite(prefs, 2); continue; }
if (!strcmp(argument, "--no-sparse")) { FIO_setSparseWrite(prefs, 0); continue; }
if (!strcmp(argument, "--pass-through")) { FIO_setPassThroughFlag(prefs, 1); continue; }
if (!strcmp(argument, "--no-pass-through")) { FIO_setPassThroughFlag(prefs, 0); continue; }
if (!strcmp(argument, "--test")) { operation=zom_test; continue; }
if (!strcmp(argument, "--asyncio")) { FIO_setAsyncIOFlag(prefs, 1); continue;}
if (!strcmp(argument, "--no-asyncio")) { FIO_setAsyncIOFlag(prefs, 0); continue;}
if (!strcmp(argument, "--train")) { operation=zom_train; if (outFileName==NULL) outFileName=g_defaultDictName; continue; }
if (!strcmp(argument, "--no-dictID")) { FIO_setDictIDFlag(prefs, 0); continue; }
if (!strcmp(argument, "--keep")) { removeSrcFile=0; continue; }
if (!strcmp(argument, "--rm")) { removeSrcFile=1; continue; }
if (!strcmp(argument, "--priority=rt")) { setRealTimePrio = 1; continue; }
if (!strcmp(argument, "--show-default-cparams")) { showDefaultCParams = 1; continue; }
if (!strcmp(argument, "--content-size")) { contentSize = 1; continue; }
if (!strcmp(argument, "--no-content-size")) { contentSize = 0; continue; }
if (!strcmp(argument, "--adapt")) { adapt = 1; continue; }
if (!strcmp(argument, "--no-row-match-finder")) { useRowMatchFinder = ZSTD_ps_disable; continue; }
if (!strcmp(argument, "--row-match-finder")) { useRowMatchFinder = ZSTD_ps_enable; continue; }
if (longCommandWArg(&argument, "--adapt=")) { adapt = 1; if (!parseAdaptParameters(argument, &adaptMin, &adaptMax)) { badusage(programName); CLEAN_RETURN(1); } continue; }
if (!strcmp(argument, "--single-thread")) { nbWorkers = 0; singleThread = 1; continue; }
if (!strcmp(argument, "--format=zstd")) { suffix = ZSTD_EXTENSION; cType = FIO_zstdCompression; continue; }
if (!strcmp(argument, "--mmap-dict")) { mmapDict = ZSTD_ps_enable; continue; }
if (!strcmp(argument, "--no-mmap-dict")) { mmapDict = ZSTD_ps_disable; continue; }
#ifdef ZSTD_GZCOMPRESS
if (!strcmp(argument, "--format=gzip")) { suffix = GZ_EXTENSION; cType = FIO_gzipCompression; continue; }
if (exeNameMatch(programName, ZSTD_GZ)) { /* behave like gzip */
if (!strcmp(argument, "--best")) { dictCLevel = cLevel = 9; continue; }
if (!strcmp(argument, "--no-name")) { /* ignore for now */; continue; }
}
#endif
#ifdef ZSTD_LZMACOMPRESS
if (!strcmp(argument, "--format=lzma")) { suffix = LZMA_EXTENSION; cType = FIO_lzmaCompression; continue; }
if (!strcmp(argument, "--format=xz")) { suffix = XZ_EXTENSION; cType = FIO_xzCompression; continue; }