452 lines
17 KiB
C
452 lines
17 KiB
C
/*
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zstdcli - Command Line Interface (cli) for zstd
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Copyright (C) Yann Collet 2014-2016
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GPL v2 License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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You can contact the author at :
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- zstd homepage : http://www.zstd.net/
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*/
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/*
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Note : this is a user program, not part of libzstd.
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The license of libzstd is BSD.
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The license of this command line program is GPLv2.
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*/
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/*-************************************
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* Includes
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**************************************/
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#include "util.h" /* Compiler options, UTIL_HAS_CREATEFILELIST */
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#include <string.h> /* strcmp, strlen */
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#include <ctype.h> /* toupper */
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#include "fileio.h"
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#ifndef ZSTD_NOBENCH
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# include "bench.h" /* BMK_benchFiles, BMK_SetNbIterations */
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#endif
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#include "zstd_static.h" /* ZSTD_maxCLevel, ZSTD version numbers */
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#ifndef ZSTD_NODICT
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# include "dibio.h"
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#endif
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/*-************************************
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* OS-specific Includes
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**************************************/
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#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)
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# include <io.h> /* _isatty */
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# define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream))
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#else
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extern int fileno(FILE *stream); /* triggers fileno() within <stdio.h> on POSIX */
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# include <unistd.h> /* isatty */
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# define IS_CONSOLE(stdStream) isatty(fileno(stdStream))
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#endif
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/*-************************************
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* Constants
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**************************************/
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#define COMPRESSOR_NAME "zstd command line interface"
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#ifndef ZSTD_VERSION
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# define ZSTD_VERSION "v" ZSTD_VERSION_STRING
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#endif
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#define AUTHOR "Yann Collet"
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#define WELCOME_MESSAGE "*** %s %i-bits %s, by %s ***\n", COMPRESSOR_NAME, (int)(sizeof(size_t)*8), ZSTD_VERSION, AUTHOR
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#define ZSTD_EXTENSION ".zst"
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#define ZSTD_CAT "zstdcat"
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#define ZSTD_UNZSTD "unzstd"
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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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static const char* g_defaultDictName = "dictionary";
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static const unsigned g_defaultMaxDictSize = 110 KB;
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static const unsigned g_defaultDictCLevel = 5;
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static const unsigned g_defaultSelectivityLevel = 9;
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/*-************************************
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* Display Macros
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**************************************/
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#define DISPLAY(...) fprintf(displayOut, __VA_ARGS__)
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#define DISPLAYLEVEL(l, ...) if (displayLevel>=l) { DISPLAY(__VA_ARGS__); }
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static FILE* displayOut;
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static unsigned displayLevel = 2; /* 0 : no display, 1: errors, 2 : + result + interaction + warnings, 3 : + progression, 4 : + information */
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/*-************************************
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* Command Line
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**************************************/
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static int usage(const char* programName)
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{
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DISPLAY( "Usage :\n");
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DISPLAY( " %s [args] [FILE(s)] [-o file]\n", programName);
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DISPLAY( "\n");
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DISPLAY( "FILE : a filename\n");
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DISPLAY( " with no FILE, or when FILE is - , read standard input\n");
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DISPLAY( "Arguments :\n");
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#ifndef ZSTD_NOCOMPRESS
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DISPLAY( " -# : # compression level (1-%u, default:1) \n", ZSTD_maxCLevel());
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#endif
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#ifndef ZSTD_NODECOMPRESS
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DISPLAY( " -d : decompression \n");
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#endif
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DISPLAY( " -D file: use `file` as Dictionary \n");
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DISPLAY( " -o file: result stored into `file` (only if 1 input file) \n");
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DISPLAY( " -f : overwrite output without prompting \n");
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DISPLAY( " -h/-H : display help/long help and exit\n");
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return 0;
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}
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static int usage_advanced(const char* programName)
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{
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DISPLAY(WELCOME_MESSAGE);
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usage(programName);
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DISPLAY( "\n");
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DISPLAY( "Advanced arguments :\n");
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DISPLAY( " -V : display Version number and exit\n");
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DISPLAY( " -t : test compressed file integrity \n");
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DISPLAY( " -v : verbose mode\n");
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DISPLAY( " -q : suppress warnings; specify twice to suppress errors too\n");
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DISPLAY( " -c : force write to standard output, even if it is the console\n");
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#ifndef ZSTD_NOCOMPRESS
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DISPLAY( "--ultra : enable ultra modes (requires more memory to decompress)\n");
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#endif
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#ifndef ZSTD_NODICT
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DISPLAY( "Dictionary builder :\n");
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DISPLAY( "--train : create a dictionary from a training set of files \n");
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DISPLAY( " -o file: `file` is dictionary name (default: %s) \n", g_defaultDictName);
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DISPLAY( "--maxdict:limit dictionary to specified size (default : %u) \n", g_defaultMaxDictSize);
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DISPLAY( " -s# : dictionary selectivity level (default: %u)\n", g_defaultSelectivityLevel);
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#endif
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#ifndef ZSTD_NOBENCH
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DISPLAY( "Benchmark arguments :\n");
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DISPLAY( " -b# : benchmark file(s), using # compression level (default : 1) \n");
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DISPLAY( " -e# : test all compression levels from -bX to # (default: 1)\n");
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DISPLAY( " -i# : iteration loops [1-9](default : 3)\n");
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#ifdef UTIL_HAS_CREATEFILELIST
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DISPLAY( " -r : operate recursively on directories\n");
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#endif
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DISPLAY( " -B# : cut file into independent blocks of size # (default: no block)\n");
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#endif
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return 0;
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}
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static int badusage(const char* programName)
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{
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DISPLAYLEVEL(1, "Incorrect parameters\n");
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if (displayLevel >= 1) usage(programName);
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return 1;
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}
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static void waitEnter(void)
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{
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int unused;
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DISPLAY("Press enter to continue...\n");
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unused = getchar();
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(void)unused;
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}
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#define CLEAN_RETURN(i) { operationResult = (i); goto _end; }
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int main(int argCount, const char** argv)
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{
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int i,
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bench=0,
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decode=0,
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forceStdout=0,
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main_pause=0,
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nextEntryIsDictionary=0,
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operationResult=0,
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dictBuild=0,
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nextArgumentIsOutFileName=0,
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nextArgumentIsMaxDict=0;
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unsigned cLevel = 1;
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unsigned cLevelLast = 1;
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unsigned recursive = 0;
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const char** filenameTable = (const char**)malloc(argCount * sizeof(const char*)); /* argCount >= 1 */
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unsigned filenameIdx = 0;
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const char* programName = argv[0];
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const char* outFileName = NULL;
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const char* dictFileName = NULL;
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char* dynNameSpace = NULL;
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unsigned maxDictSize = g_defaultMaxDictSize;
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unsigned dictCLevel = g_defaultDictCLevel;
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unsigned dictSelect = g_defaultSelectivityLevel;
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/* init */
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(void)recursive; (void)cLevelLast; (void)dictCLevel; /* not used when ZSTD_NOBENCH / ZSTD_NODICT set */
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(void)decode; (void)cLevel; /* not used when ZSTD_NOCOMPRESS set */
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if (filenameTable==NULL) { DISPLAY("not enough memory\n"); exit(1); }
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displayOut = stderr;
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/* Pick out program name from path. Don't rely on stdlib because of conflicting behavior */
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for (i = (int)strlen(programName); i > 0; i--) { if (programName[i] == '/') { i++; break; } }
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programName += i;
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/* preset behaviors */
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if (!strcmp(programName, ZSTD_UNZSTD)) decode=1;
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if (!strcmp(programName, ZSTD_CAT)) { decode=1; forceStdout=1; displayLevel=1; outFileName=stdoutmark; }
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/* command switches */
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for(i=1; i<argCount; i++) {
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const char* argument = argv[i];
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if(!argument) continue; /* Protection if argument empty */
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/* long commands (--long-word) */
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if (!strcmp(argument, "--decompress")) { decode=1; continue; }
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if (!strcmp(argument, "--force")) { FIO_overwriteMode(); continue; }
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if (!strcmp(argument, "--version")) { displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0); }
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if (!strcmp(argument, "--help")) { displayOut=stdout; CLEAN_RETURN(usage_advanced(programName)); }
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if (!strcmp(argument, "--verbose")) { displayLevel=4; continue; }
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if (!strcmp(argument, "--quiet")) { displayLevel--; continue; }
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if (!strcmp(argument, "--stdout")) { forceStdout=1; outFileName=stdoutmark; displayLevel=1; continue; }
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if (!strcmp(argument, "--test")) { decode=1; outFileName=nulmark; FIO_overwriteMode(); continue; }
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if (!strcmp(argument, "--train")) { dictBuild=1; outFileName=g_defaultDictName; continue; }
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if (!strcmp(argument, "--maxdict")) { nextArgumentIsMaxDict=1; continue; }
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if (!strcmp(argument, "--keep")) { continue; } /* does nothing, since preserving input is default; for gzip/xz compatibility */
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if (!strcmp(argument, "--ultra")) { FIO_setMaxWLog(0); continue; }
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/* '-' means stdin/stdout */
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if (!strcmp(argument, "-")){
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if (!filenameIdx) { filenameIdx=1, filenameTable[0]=stdinmark; outFileName=stdoutmark; continue; }
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}
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/* Decode commands (note : aggregated commands are allowed) */
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if (argument[0]=='-') {
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argument++;
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while (argument[0]!=0) {
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#ifndef ZSTD_NOCOMPRESS
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/* compression Level */
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if ((*argument>='0') && (*argument<='9')) {
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cLevel = 0;
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while ((*argument >= '0') && (*argument <= '9')) {
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cLevel *= 10;
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cLevel += *argument - '0';
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argument++;
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}
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dictCLevel = cLevel;
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if (dictCLevel > ZSTD_maxCLevel())
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CLEAN_RETURN(badusage(programName));
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continue;
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}
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#endif
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switch(argument[0])
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{
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/* Display help */
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case 'V': displayOut=stdout; DISPLAY(WELCOME_MESSAGE); CLEAN_RETURN(0); /* Version Only */
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case 'H':
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case 'h': displayOut=stdout; CLEAN_RETURN(usage_advanced(programName));
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/* Decoding */
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case 'd': decode=1; argument++; break;
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/* Force stdout, even if stdout==console */
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case 'c': forceStdout=1; outFileName=stdoutmark; displayLevel=1; argument++; break;
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/* Use file content as dictionary */
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case 'D': nextEntryIsDictionary = 1; argument++; break;
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/* Overwrite */
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case 'f': FIO_overwriteMode(); argument++; break;
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/* Verbose mode */
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case 'v': displayLevel=4; argument++; break;
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/* Quiet mode */
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case 'q': displayLevel--; argument++; break;
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/* keep source file (default anyway, so useless; for gzip/xz compatibility) */
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case 'k': argument++; break;
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/* test compressed file */
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case 't': decode=1; outFileName=nulmark; FIO_overwriteMode(); argument++; break;
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/* dictionary name */
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case 'o': nextArgumentIsOutFileName=1; argument++; break;
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#ifndef ZSTD_NOBENCH
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/* Benchmark */
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case 'b': bench=1; argument++; break;
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/* range bench (benchmark only) */
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case 'e':
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/* compression Level */
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argument++;
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if ((*argument>='0') && (*argument<='9')) {
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cLevelLast = 0;
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while ((*argument >= '0') && (*argument <= '9'))
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cLevelLast *= 10, cLevelLast += *argument++ - '0';
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}
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break;
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/* Modify Nb Iterations (benchmark only) */
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case 'i':
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{ U32 iters= 0;
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argument++;
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while ((*argument >='0') && (*argument <='9'))
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iters *= 10, iters += *argument++ - '0';
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BMK_setNotificationLevel(displayLevel);
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BMK_SetNbIterations(iters);
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}
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break;
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/* recursive */
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case 'r': recursive=1; argument++; break;
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/* cut input into blocks (benchmark only) */
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case 'B':
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{ size_t bSize = 0;
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argument++;
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while ((*argument >='0') && (*argument <='9'))
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bSize *= 10, bSize += *argument++ - '0';
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if (toupper(*argument)=='K') bSize<<=10, argument++; /* allows using KB notation */
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if (toupper(*argument)=='M') bSize<<=20, argument++;
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if (toupper(*argument)=='B') argument++;
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BMK_setNotificationLevel(displayLevel);
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BMK_SetBlockSize(bSize);
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}
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break;
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#endif /* ZSTD_NOBENCH */
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/* Selection level */
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case 's': argument++;
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dictSelect = 0;
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while ((*argument >= '0') && (*argument <= '9'))
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dictSelect *= 10, dictSelect += *argument++ - '0';
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break;
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/* Pause at the end (-p) or set an additional param (-p#) (hidden option) */
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case 'p': argument++;
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#ifndef ZSTD_NOBENCH
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if ((*argument>='0') && (*argument<='9')) {
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int additionalParam = 0;
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while ((*argument >= '0') && (*argument <= '9'))
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additionalParam *= 10, additionalParam += *argument++ - '0';
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BMK_setAdditionalParam(additionalParam);
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} else
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#endif
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main_pause=1;
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break;
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/* unknown command */
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default : CLEAN_RETURN(badusage(programName));
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}
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}
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continue;
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} /* if (argument[0]=='-') */
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if (nextEntryIsDictionary) {
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nextEntryIsDictionary = 0;
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dictFileName = argument;
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continue;
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}
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if (nextArgumentIsOutFileName) {
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nextArgumentIsOutFileName = 0;
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outFileName = argument;
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if (!strcmp(outFileName, "-")) outFileName = stdoutmark;
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continue;
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}
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if (nextArgumentIsMaxDict) {
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nextArgumentIsMaxDict = 0;
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maxDictSize = 0;
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while ((*argument>='0') && (*argument<='9'))
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maxDictSize = maxDictSize * 10 + (*argument - '0'), argument++;
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if (toupper(*argument)=='K') maxDictSize <<= 10;
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continue;
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}
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/* add filename to list */
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filenameTable[filenameIdx++] = argument;
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}
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/* Welcome message (if verbose) */
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DISPLAYLEVEL(3, WELCOME_MESSAGE);
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/* Check if benchmark is selected */
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if (bench) {
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#ifndef ZSTD_NOBENCH
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BMK_setNotificationLevel(displayLevel);
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BMK_benchFiles(filenameTable, filenameIdx, dictFileName, cLevel, cLevelLast, recursive);
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#endif
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goto _end;
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}
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/* Check if dictionary builder is selected */
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if (dictBuild) {
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#ifndef ZSTD_NODICT
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ZDICT_params_t dictParams;
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dictParams.compressionLevel = dictCLevel;
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dictParams.selectivityLevel = dictSelect;
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dictParams.notificationLevel = displayLevel;
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DiB_trainFromFiles(outFileName, maxDictSize, filenameTable, filenameIdx, dictParams);
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#endif
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goto _end;
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}
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/* No input filename ==> use stdin and stdout */
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if(!filenameIdx) filenameIdx=1, filenameTable[0]=stdinmark, outFileName=stdoutmark;
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/* Check if input/output defined as console; trigger an error in this case */
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if (!strcmp(filenameTable[0], stdinmark) && IS_CONSOLE(stdin) ) CLEAN_RETURN(badusage(programName));
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if (outFileName && !strcmp(outFileName, stdoutmark) && IS_CONSOLE(stdout) && !forceStdout) CLEAN_RETURN(badusage(programName));
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/* user-selected output filename, only possible with a single file */
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if (outFileName && strcmp(outFileName,stdoutmark) && strcmp(outFileName,nulmark) && (filenameIdx>1)) {
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DISPLAY("Too many files (%u) on the command line. \n", filenameIdx);
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CLEAN_RETURN(filenameIdx);
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}
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/* No warning message in pipe mode (stdin + stdout) or multiple mode */
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if (!strcmp(filenameTable[0], stdinmark) && outFileName && !strcmp(outFileName,stdoutmark) && (displayLevel==2)) displayLevel=1;
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if ((filenameIdx>1) && (displayLevel==2)) displayLevel=1;
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/* IO Stream/File */
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FIO_setNotificationLevel(displayLevel);
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#ifndef ZSTD_NOCOMPRESS
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if (!decode) {
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if (filenameIdx==1 && outFileName)
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operationResult = FIO_compressFilename(outFileName, filenameTable[0], dictFileName, cLevel);
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else
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operationResult = FIO_compressMultipleFilenames(filenameTable, filenameIdx, outFileName ? outFileName : ZSTD_EXTENSION, dictFileName, cLevel);
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} else
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#endif
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{ /* decompression */
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#ifndef ZSTD_NODECOMPRESS
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if (filenameIdx==1 && outFileName)
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operationResult = FIO_decompressFilename(outFileName, filenameTable[0], dictFileName);
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else
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operationResult = FIO_decompressMultipleFilenames(filenameTable, filenameIdx, outFileName ? outFileName : ZSTD_EXTENSION, dictFileName);
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#else
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DISPLAY("Decompression not supported\n");
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#endif
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}
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_end:
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if (main_pause) waitEnter();
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free(dynNameSpace);
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free((void*)filenameTable);
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return operationResult;
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}
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