| /* |
| LZ4cli - LZ4 Command Line Interface |
| Copyright (C) Yann Collet 2011-2016 |
| |
| GPL v2 License |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License along |
| with this program; if not, write to the Free Software Foundation, Inc., |
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| |
| You can contact the author at : |
| - LZ4 source repository : https://github.com/lz4/lz4 |
| - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c |
| */ |
| /* |
| Note : this is stand-alone program. |
| It is not part of LZ4 compression library, it is a user program of the LZ4 library. |
| The license of LZ4 library is BSD. |
| The license of xxHash library is BSD. |
| The license of this compression CLI program is GPLv2. |
| */ |
| |
| /************************************** |
| * Tuning parameters |
| ***************************************/ |
| /* ENABLE_LZ4C_LEGACY_OPTIONS : |
| Control the availability of -c0, -c1 and -hc legacy arguments |
| Default : Legacy options are disabled */ |
| /* #define ENABLE_LZ4C_LEGACY_OPTIONS */ |
| |
| |
| /**************************** |
| * Includes |
| *****************************/ |
| #include "platform.h" /* Compiler options, IS_CONSOLE */ |
| #include "util.h" /* UTIL_HAS_CREATEFILELIST, UTIL_createFileList */ |
| #include <stdio.h> /* fprintf, getchar */ |
| #include <stdlib.h> /* exit, calloc, free */ |
| #include <string.h> /* strcmp, strlen */ |
| #include "bench.h" /* BMK_benchFile, BMK_SetNbIterations, BMK_SetBlocksize, BMK_SetPause */ |
| #include "lz4io.h" /* LZ4IO_compressFilename, LZ4IO_decompressFilename, LZ4IO_compressMultipleFilenames */ |
| #include "lz4hc.h" /* LZ4HC_DEFAULT_CLEVEL */ |
| #include "lz4.h" /* LZ4_VERSION_STRING */ |
| |
| |
| /***************************** |
| * Constants |
| ******************************/ |
| #define COMPRESSOR_NAME "LZ4 command line interface" |
| #define AUTHOR "Yann Collet" |
| #define WELCOME_MESSAGE "*** %s %i-bits v%s, by %s ***\n", COMPRESSOR_NAME, (int)(sizeof(void*)*8), LZ4_versionString(), AUTHOR |
| #define LZ4_EXTENSION ".lz4" |
| #define LZ4CAT "lz4cat" |
| #define UNLZ4 "unlz4" |
| |
| #define KB *(1U<<10) |
| #define MB *(1U<<20) |
| #define GB *(1U<<30) |
| |
| #define LZ4_BLOCKSIZEID_DEFAULT 7 |
| |
| |
| /*-************************************ |
| * Macros |
| ***************************************/ |
| #define DISPLAY(...) fprintf(stderr, __VA_ARGS__) |
| #define DISPLAYLEVEL(l, ...) if (displayLevel>=l) { DISPLAY(__VA_ARGS__); } |
| static unsigned displayLevel = 2; /* 0 : no display ; 1: errors only ; 2 : downgradable normal ; 3 : non-downgradable normal; 4 : + information */ |
| |
| |
| /*-************************************ |
| * Exceptions |
| ***************************************/ |
| #define DEBUG 0 |
| #define DEBUGOUTPUT(...) if (DEBUG) DISPLAY(__VA_ARGS__); |
| #define EXM_THROW(error, ...) \ |
| { \ |
| DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \ |
| DISPLAYLEVEL(1, "Error %i : ", error); \ |
| DISPLAYLEVEL(1, __VA_ARGS__); \ |
| DISPLAYLEVEL(1, "\n"); \ |
| exit(error); \ |
| } |
| |
| |
| /*-************************************ |
| * Version modifiers |
| ***************************************/ |
| #define EXTENDED_ARGUMENTS |
| #define EXTENDED_HELP |
| #define EXTENDED_FORMAT |
| #define DEFAULT_COMPRESSOR LZ4IO_compressFilename |
| #define DEFAULT_DECOMPRESSOR LZ4IO_decompressFilename |
| int LZ4IO_compressFilename_Legacy(const char* input_filename, const char* output_filename, int compressionlevel); /* hidden function */ |
| |
| |
| /*-*************************** |
| * Functions |
| *****************************/ |
| static int usage(const char* exeName) |
| { |
| DISPLAY( "Usage : \n"); |
| DISPLAY( " %s [arg] [input] [output] \n", exeName); |
| DISPLAY( "\n"); |
| DISPLAY( "input : a filename \n"); |
| DISPLAY( " with no FILE, or when FILE is - or %s, read standard input\n", stdinmark); |
| DISPLAY( "Arguments : \n"); |
| DISPLAY( " -1 : Fast compression (default) \n"); |
| DISPLAY( " -9 : High compression \n"); |
| DISPLAY( " -d : decompression (default for %s extension)\n", LZ4_EXTENSION); |
| DISPLAY( " -z : force compression \n"); |
| DISPLAY( " -f : overwrite output without prompting \n"); |
| DISPLAY( " -k : preserve source files(s) (default) \n"); |
| DISPLAY( "--rm : remove source file(s) after successful de/compression \n"); |
| DISPLAY( " -h/-H : display help/long help and exit \n"); |
| return 0; |
| } |
| |
| static int usage_advanced(const char* exeName) |
| { |
| DISPLAY(WELCOME_MESSAGE); |
| usage(exeName); |
| DISPLAY( "\n"); |
| DISPLAY( "Advanced arguments :\n"); |
| DISPLAY( " -V : display Version number and exit \n"); |
| DISPLAY( " -v : verbose mode \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( " -t : test compressed file integrity\n"); |
| DISPLAY( " -m : multiple input files (implies automatic output filenames)\n"); |
| #ifdef UTIL_HAS_CREATEFILELIST |
| DISPLAY( " -r : operate recursively on directories (sets also -m) \n"); |
| #endif |
| DISPLAY( " -l : compress using Legacy format (Linux kernel compression)\n"); |
| DISPLAY( " -B# : Block size [4-7] (default : 7) \n"); |
| DISPLAY( " -BD : Block dependency (improve compression ratio) \n"); |
| /* DISPLAY( " -BX : enable block checksum (default:disabled)\n"); *//* Option currently inactive */ |
| DISPLAY( "--no-frame-crc : disable stream checksum (default:enabled) \n"); |
| DISPLAY( "--content-size : compressed frame includes original size (default:not present)\n"); |
| DISPLAY( "--[no-]sparse : sparse mode (default:enabled on file, disabled on stdout)\n"); |
| DISPLAY( "Benchmark arguments : \n"); |
| DISPLAY( " -b# : benchmark file(s), using # compression level (default : 1) \n"); |
| 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 # bytes [32+] \n"); |
| DISPLAY( " or predefined block size [4-7] (default: 7) \n"); |
| #if defined(ENABLE_LZ4C_LEGACY_OPTIONS) |
| DISPLAY( "Legacy arguments : \n"); |
| DISPLAY( " -c0 : fast compression \n"); |
| DISPLAY( " -c1 : high compression \n"); |
| DISPLAY( " -hc : high compression \n"); |
| DISPLAY( " -y : overwrite output without prompting \n"); |
| #endif /* ENABLE_LZ4C_LEGACY_OPTIONS */ |
| EXTENDED_HELP; |
| return 0; |
| } |
| |
| static int usage_longhelp(const char* exeName) |
| { |
| usage_advanced(exeName); |
| DISPLAY( "\n"); |
| DISPLAY( "****************************\n"); |
| DISPLAY( "***** Advanced comment *****\n"); |
| DISPLAY( "****************************\n"); |
| DISPLAY( "\n"); |
| DISPLAY( "Which values can [output] have ? \n"); |
| DISPLAY( "---------------------------------\n"); |
| DISPLAY( "[output] : a filename \n"); |
| DISPLAY( " '%s', or '-' for standard output (pipe mode)\n", stdoutmark); |
| DISPLAY( " '%s' to discard output (test mode) \n", NULL_OUTPUT); |
| DISPLAY( "[output] can be left empty. In this case, it receives the following value :\n"); |
| DISPLAY( " - if stdout is not the console, then [output] = stdout \n"); |
| DISPLAY( " - if stdout is console : \n"); |
| DISPLAY( " + for compression, output to filename%s \n", LZ4_EXTENSION); |
| DISPLAY( " + for decompression, output to filename without '%s'\n", LZ4_EXTENSION); |
| DISPLAY( " > if input filename has no '%s' extension : error \n", LZ4_EXTENSION); |
| DISPLAY( "\n"); |
| DISPLAY( "Compression levels : \n"); |
| DISPLAY( "---------------------\n"); |
| DISPLAY( "-0 ... -2 => Fast compression, all identicals\n"); |
| DISPLAY( "-3 ... -%d => High compression; higher number == more compression but slower\n", LZ4HC_CLEVEL_MAX); |
| DISPLAY( "\n"); |
| DISPLAY( "stdin, stdout and the console : \n"); |
| DISPLAY( "--------------------------------\n"); |
| DISPLAY( "To protect the console from binary flooding (bad argument mistake)\n"); |
| DISPLAY( "%s will refuse to read from console, or write to console \n", exeName); |
| DISPLAY( "except if '-c' command is specified, to force output to console \n"); |
| DISPLAY( "\n"); |
| DISPLAY( "Simple example :\n"); |
| DISPLAY( "----------------\n"); |
| DISPLAY( "1 : compress 'filename' fast, using default output name 'filename.lz4'\n"); |
| DISPLAY( " %s filename\n", exeName); |
| DISPLAY( "\n"); |
| DISPLAY( "Short arguments can be aggregated. For example :\n"); |
| DISPLAY( "----------------------------------\n"); |
| DISPLAY( "2 : compress 'filename' in high compression mode, overwrite output if exists\n"); |
| DISPLAY( " %s -9 -f filename \n", exeName); |
| DISPLAY( " is equivalent to :\n"); |
| DISPLAY( " %s -9f filename \n", exeName); |
| DISPLAY( "\n"); |
| DISPLAY( "%s can be used in 'pure pipe mode'. For example :\n", exeName); |
| DISPLAY( "-------------------------------------\n"); |
| DISPLAY( "3 : compress data stream from 'generator', send result to 'consumer'\n"); |
| DISPLAY( " generator | %s | consumer \n", exeName); |
| #if defined(ENABLE_LZ4C_LEGACY_OPTIONS) |
| DISPLAY( "\n"); |
| DISPLAY( "***** Warning *****\n"); |
| DISPLAY( "Legacy arguments take precedence. Therefore : \n"); |
| DISPLAY( "---------------------------------\n"); |
| DISPLAY( " %s -hc filename\n", exeName); |
| DISPLAY( "means 'compress filename in high compression mode'\n"); |
| DISPLAY( "It is not equivalent to :\n"); |
| DISPLAY( " %s -h -c filename\n", exeName); |
| DISPLAY( "which would display help text and exit\n"); |
| #endif /* ENABLE_LZ4C_LEGACY_OPTIONS */ |
| return 0; |
| } |
| |
| static int badusage(const char* exeName) |
| { |
| DISPLAYLEVEL(1, "Incorrect parameters\n"); |
| if (displayLevel >= 1) usage(exeName); |
| exit(1); |
| } |
| |
| |
| static void waitEnter(void) |
| { |
| DISPLAY("Press enter to continue...\n"); |
| (void)getchar(); |
| } |
| |
| static const char* lastNameFromPath(const char* path) |
| { |
| const char* name = strrchr(path, '/'); |
| if (name==NULL) name = strrchr(path, '\\'); /* windows */ |
| if (name==NULL) return path; |
| return name+1; |
| } |
| |
| /*! readU32FromChar() : |
| @return : unsigned integer value reach from input in `char` format |
| Will also modify `*stringPtr`, advancing it to position where it stopped reading. |
| Note : this function can overflow if result > MAX_UINT */ |
| static unsigned readU32FromChar(const char** stringPtr) |
| { |
| unsigned result = 0; |
| while ((**stringPtr >='0') && (**stringPtr <='9')) |
| result *= 10, result += **stringPtr - '0', (*stringPtr)++ ; |
| return result; |
| } |
| |
| typedef enum { om_auto, om_compress, om_decompress, om_test, om_bench } operationMode_e; |
| |
| int main(int argc, const char** argv) |
| { |
| int i, |
| cLevel=1, |
| cLevelLast=1, |
| legacy_format=0, |
| forceStdout=0, |
| main_pause=0, |
| multiple_inputs=0, |
| operationResult=0; |
| operationMode_e mode = om_auto; |
| const char* input_filename = NULL; |
| const char* output_filename= NULL; |
| char* dynNameSpace = NULL; |
| const char** inFileNames = (const char**) calloc(argc, sizeof(char*)); |
| unsigned ifnIdx=0; |
| const char nullOutput[] = NULL_OUTPUT; |
| const char extension[] = LZ4_EXTENSION; |
| size_t blockSize = LZ4IO_setBlockSizeID(LZ4_BLOCKSIZEID_DEFAULT); |
| const char* const exeName = lastNameFromPath(argv[0]); |
| #ifdef UTIL_HAS_CREATEFILELIST |
| const char** extendedFileList = NULL; |
| char* fileNamesBuf = NULL; |
| unsigned fileNamesNb, recursive=0; |
| #endif |
| |
| /* Init */ |
| if (inFileNames==NULL) { |
| DISPLAY("Allocation error : not enough memory \n"); |
| return 1; |
| } |
| inFileNames[0] = stdinmark; |
| LZ4IO_setOverwrite(0); |
| |
| /* lz4cat predefined behavior */ |
| if (!strcmp(exeName, LZ4CAT)) { |
| mode = om_decompress; |
| LZ4IO_setOverwrite(1); |
| LZ4IO_setRemoveSrcFile(0); |
| forceStdout=1; |
| output_filename=stdoutmark; |
| displayLevel=1; |
| multiple_inputs=1; |
| } |
| if (!strcmp(exeName, UNLZ4)) { mode = om_decompress; } |
| |
| /* command switches */ |
| for(i=1; i<argc; i++) { |
| const char* argument = argv[i]; |
| |
| if(!argument) continue; /* Protection if argument empty */ |
| |
| /* Short commands (note : aggregated short commands are allowed) */ |
| if (argument[0]=='-') { |
| /* '-' means stdin/stdout */ |
| if (argument[1]==0) { |
| if (!input_filename) input_filename=stdinmark; |
| else output_filename=stdoutmark; |
| continue; |
| } |
| |
| /* long commands (--long-word) */ |
| if (argument[1]=='-') { |
| if (!strcmp(argument, "--compress")) { mode = om_compress; continue; } |
| if ((!strcmp(argument, "--decompress")) |
| || (!strcmp(argument, "--uncompress"))) { mode = om_decompress; continue; } |
| if (!strcmp(argument, "--multiple")) { multiple_inputs = 1; continue; } |
| if (!strcmp(argument, "--test")) { mode = om_test; continue; } |
| if (!strcmp(argument, "--force")) { LZ4IO_setOverwrite(1); continue; } |
| if (!strcmp(argument, "--no-force")) { LZ4IO_setOverwrite(0); continue; } |
| if ((!strcmp(argument, "--stdout")) |
| || (!strcmp(argument, "--to-stdout"))) { forceStdout=1; output_filename=stdoutmark; continue; } |
| if (!strcmp(argument, "--frame-crc")) { LZ4IO_setStreamChecksumMode(1); continue; } |
| if (!strcmp(argument, "--no-frame-crc")) { LZ4IO_setStreamChecksumMode(0); continue; } |
| if (!strcmp(argument, "--content-size")) { LZ4IO_setContentSize(1); continue; } |
| if (!strcmp(argument, "--no-content-size")) { LZ4IO_setContentSize(0); continue; } |
| if (!strcmp(argument, "--sparse")) { LZ4IO_setSparseFile(2); continue; } |
| if (!strcmp(argument, "--no-sparse")) { LZ4IO_setSparseFile(0); continue; } |
| if (!strcmp(argument, "--verbose")) { displayLevel++; continue; } |
| if (!strcmp(argument, "--quiet")) { if (displayLevel) displayLevel--; continue; } |
| if (!strcmp(argument, "--version")) { DISPLAY(WELCOME_MESSAGE); return 0; } |
| if (!strcmp(argument, "--help")) { usage_advanced(exeName); goto _cleanup; } |
| if (!strcmp(argument, "--keep")) { LZ4IO_setRemoveSrcFile(0); continue; } /* keep source file (default) */ |
| if (!strcmp(argument, "--rm")) { LZ4IO_setRemoveSrcFile(1); continue; } |
| } |
| |
| while (argument[1]!=0) { |
| argument ++; |
| |
| #if defined(ENABLE_LZ4C_LEGACY_OPTIONS) |
| /* Legacy arguments (-c0, -c1, -hc, -y, -s) */ |
| if ((argument[0]=='c') && (argument[1]=='0')) { cLevel=0; argument++; continue; } /* -c0 (fast compression) */ |
| if ((argument[0]=='c') && (argument[1]=='1')) { cLevel=9; argument++; continue; } /* -c1 (high compression) */ |
| if ((argument[0]=='h') && (argument[1]=='c')) { cLevel=9; argument++; continue; } /* -hc (high compression) */ |
| if (*argument=='y') { LZ4IO_setOverwrite(1); continue; } /* -y (answer 'yes' to overwrite permission) */ |
| #endif /* ENABLE_LZ4C_LEGACY_OPTIONS */ |
| |
| if ((*argument>='0') && (*argument<='9')) { |
| cLevel = readU32FromChar(&argument); |
| argument--; |
| continue; |
| } |
| |
| |
| switch(argument[0]) |
| { |
| /* Display help */ |
| case 'V': DISPLAY(WELCOME_MESSAGE); goto _cleanup; /* Version */ |
| case 'h': usage_advanced(exeName); goto _cleanup; |
| case 'H': usage_longhelp(exeName); goto _cleanup; |
| |
| case 'e': |
| argument++; |
| cLevelLast = readU32FromChar(&argument); |
| argument--; |
| break; |
| |
| /* Compression (default) */ |
| case 'z': mode = om_compress; break; |
| |
| /* Use Legacy format (ex : Linux kernel compression) */ |
| case 'l': legacy_format = 1; blockSize = 8 MB; break; |
| |
| /* Decoding */ |
| case 'd': mode = om_decompress; break; |
| |
| /* Force stdout, even if stdout==console */ |
| case 'c': forceStdout=1; output_filename=stdoutmark; break; |
| |
| /* Test integrity */ |
| case 't': mode = om_test; break; |
| |
| /* Overwrite */ |
| case 'f': LZ4IO_setOverwrite(1); break; |
| |
| /* Verbose mode */ |
| case 'v': displayLevel++; break; |
| |
| /* Quiet mode */ |
| case 'q': if (displayLevel) displayLevel--; break; |
| |
| /* keep source file (default anyway, so useless) (for xz/lzma compatibility) */ |
| case 'k': LZ4IO_setRemoveSrcFile(0); break; |
| |
| /* Modify Block Properties */ |
| case 'B': |
| while (argument[1]!=0) { |
| int exitBlockProperties=0; |
| switch(argument[1]) |
| { |
| case 'D': LZ4IO_setBlockMode(LZ4IO_blockLinked); argument++; break; |
| case 'X': LZ4IO_setBlockChecksumMode(1); argument ++; break; /* disabled by default */ |
| default : |
| if (argument[1] < '0' || argument[1] > '9') { |
| exitBlockProperties=1; |
| break; |
| } else { |
| unsigned B; |
| argument++; |
| B = readU32FromChar(&argument); |
| argument--; |
| if (B < 4) badusage(exeName); |
| if (B <= 7) { |
| blockSize = LZ4IO_setBlockSizeID(B); |
| BMK_SetBlockSize(blockSize); |
| DISPLAYLEVEL(2, "using blocks of size %u KB \n", (U32)(blockSize>>10)); |
| } else { |
| if (B < 32) badusage(exeName); |
| BMK_SetBlockSize(B); |
| if (B >= 1024) { |
| DISPLAYLEVEL(2, "bench: using blocks of size %u KB \n", (U32)(B>>10)); |
| } else { |
| DISPLAYLEVEL(2, "bench: using blocks of size %u bytes \n", (U32)(B)); |
| } |
| } |
| break; |
| } |
| } |
| if (exitBlockProperties) break; |
| } |
| break; |
| |
| /* Benchmark */ |
| case 'b': mode = om_bench; multiple_inputs=1; |
| break; |
| |
| #ifdef UTIL_HAS_CREATEFILELIST |
| /* recursive */ |
| case 'r': recursive=1; /* without break */ |
| #endif |
| /* Treat non-option args as input files. See https://code.google.com/p/lz4/issues/detail?id=151 */ |
| case 'm': multiple_inputs=1; |
| break; |
| |
| /* Modify Nb Seconds (benchmark only) */ |
| case 'i': |
| { unsigned iters; |
| argument++; |
| iters = readU32FromChar(&argument); |
| argument--; |
| BMK_setNotificationLevel(displayLevel); |
| BMK_SetNbSeconds(iters); /* notification if displayLevel >= 3 */ |
| } |
| break; |
| |
| /* Pause at the end (hidden option) */ |
| case 'p': main_pause=1; break; |
| |
| /* Specific commands for customized versions */ |
| EXTENDED_ARGUMENTS; |
| |
| /* Unrecognised command */ |
| default : badusage(exeName); |
| } |
| } |
| continue; |
| } |
| |
| /* Store in *inFileNames[] if -m is used. */ |
| if (multiple_inputs) { inFileNames[ifnIdx++]=argument; continue; } |
| |
| /* Store first non-option arg in input_filename to preserve original cli logic. */ |
| if (!input_filename) { input_filename=argument; continue; } |
| |
| /* Second non-option arg in output_filename to preserve original cli logic. */ |
| if (!output_filename) { |
| output_filename=argument; |
| if (!strcmp (output_filename, nullOutput)) output_filename = nulmark; |
| continue; |
| } |
| |
| /* 3rd non-option arg should not exist */ |
| DISPLAYLEVEL(1, "Warning : %s won't be used ! Do you want multiple input files (-m) ? \n", argument); |
| } |
| |
| DISPLAYLEVEL(3, WELCOME_MESSAGE); |
| #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 |
| #ifdef _FILE_OFFSET_BITS |
| DISPLAYLEVEL(4, "_FILE_OFFSET_BITS defined: %ldL\n", (long) _FILE_OFFSET_BITS); |
| #endif |
| if ((mode == om_compress) || (mode == om_bench)) DISPLAYLEVEL(4, "Blocks size : %i KB\n", (U32)(blockSize>>10)); |
| |
| if (multiple_inputs) { |
| input_filename = inFileNames[0]; |
| #ifdef UTIL_HAS_CREATEFILELIST |
| if (recursive) { /* at this stage, filenameTable is a list of paths, which can contain both files and directories */ |
| extendedFileList = UTIL_createFileList(inFileNames, ifnIdx, &fileNamesBuf, &fileNamesNb); |
| if (extendedFileList) { |
| unsigned u; |
| for (u=0; u<fileNamesNb; u++) DISPLAYLEVEL(4, "%u %s\n", u, extendedFileList[u]); |
| free((void*)inFileNames); |
| inFileNames = extendedFileList; |
| ifnIdx = fileNamesNb; |
| } |
| } |
| #endif |
| } |
| |
| /* benchmark and test modes */ |
| if (mode == om_bench) { |
| BMK_setNotificationLevel(displayLevel); |
| operationResult = BMK_benchFiles(inFileNames, ifnIdx, cLevel, cLevelLast); |
| goto _cleanup; |
| } |
| |
| if (mode == om_test) { |
| LZ4IO_setTestMode(1); |
| output_filename = nulmark; |
| mode = om_decompress; /* defer to decompress */ |
| } |
| |
| /* compress or decompress */ |
| if (!input_filename) input_filename = stdinmark; |
| /* Check if input is defined as console; trigger an error in this case */ |
| if (!strcmp(input_filename, stdinmark) && IS_CONSOLE(stdin) ) { |
| DISPLAYLEVEL(1, "refusing to read from a console\n"); |
| exit(1); |
| } |
| /* if input==stdin and no output defined, stdout becomes default output */ |
| if (!strcmp(input_filename, stdinmark) && !output_filename) |
| output_filename = stdoutmark; |
| |
| /* No output filename ==> try to select one automatically (when possible) */ |
| while ((!output_filename) && (multiple_inputs==0)) { |
| if (!IS_CONSOLE(stdout)) { output_filename=stdoutmark; break; } /* Default to stdout whenever possible (i.e. not a console) */ |
| if (mode == om_auto) { /* auto-determine compression or decompression, based on file extension */ |
| size_t const inSize = strlen(input_filename); |
| size_t const extSize = strlen(LZ4_EXTENSION); |
| size_t const extStart= (inSize > extSize) ? inSize-extSize : 0; |
| if (!strcmp(input_filename+extStart, LZ4_EXTENSION)) mode = om_decompress; |
| else mode = om_compress; |
| } |
| if (mode == om_compress) { /* compression to file */ |
| size_t const l = strlen(input_filename); |
| dynNameSpace = (char*)calloc(1,l+5); |
| if (dynNameSpace==NULL) { perror(exeName); exit(1); } |
| strcpy(dynNameSpace, input_filename); |
| strcat(dynNameSpace, LZ4_EXTENSION); |
| output_filename = dynNameSpace; |
| DISPLAYLEVEL(2, "Compressed filename will be : %s \n", output_filename); |
| break; |
| } |
| if (mode == om_decompress) {/* decompression to file (automatic name will work only if input filename has correct format extension) */ |
| size_t outl; |
| size_t const inl = strlen(input_filename); |
| dynNameSpace = (char*)calloc(1,inl+1); |
| if (dynNameSpace==NULL) { perror(exeName); exit(1); } |
| strcpy(dynNameSpace, input_filename); |
| outl = inl; |
| if (inl>4) |
| while ((outl >= inl-4) && (input_filename[outl] == extension[outl-inl+4])) dynNameSpace[outl--]=0; |
| if (outl != inl-5) { DISPLAYLEVEL(1, "Cannot determine an output filename\n"); badusage(exeName); } |
| output_filename = dynNameSpace; |
| DISPLAYLEVEL(2, "Decoding file %s \n", output_filename); |
| } |
| break; |
| } |
| |
| /* Check if output is defined as console; trigger an error in this case */ |
| if (!output_filename) output_filename = "*\\dummy^!//"; |
| if (!strcmp(output_filename,stdoutmark) && IS_CONSOLE(stdout) && !forceStdout) { |
| DISPLAYLEVEL(1, "refusing to write to console without -c\n"); |
| exit(1); |
| } |
| /* Downgrade notification level in stdout and multiple file mode */ |
| if (!strcmp(output_filename,stdoutmark) && (displayLevel==2)) displayLevel=1; |
| if ((multiple_inputs) && (displayLevel==2)) displayLevel=1; |
| |
| /* IO Stream/File */ |
| LZ4IO_setNotificationLevel(displayLevel); |
| if (ifnIdx == 0) multiple_inputs = 0; |
| if (mode == om_decompress) { |
| if (multiple_inputs) |
| operationResult = LZ4IO_decompressMultipleFilenames(inFileNames, ifnIdx, !strcmp(output_filename,stdoutmark) ? stdoutmark : LZ4_EXTENSION); |
| else |
| operationResult = DEFAULT_DECOMPRESSOR(input_filename, output_filename); |
| } else { /* compression is default action */ |
| if (legacy_format) { |
| DISPLAYLEVEL(3, "! Generating compressed LZ4 using Legacy format (deprecated) ! \n"); |
| LZ4IO_compressFilename_Legacy(input_filename, output_filename, cLevel); |
| } else { |
| if (multiple_inputs) |
| operationResult = LZ4IO_compressMultipleFilenames(inFileNames, ifnIdx, LZ4_EXTENSION, cLevel); |
| else |
| operationResult = DEFAULT_COMPRESSOR(input_filename, output_filename, cLevel); |
| } |
| } |
| |
| _cleanup: |
| if (main_pause) waitEnter(); |
| if (dynNameSpace) free(dynNameSpace); |
| #ifdef UTIL_HAS_CREATEFILELIST |
| if (extendedFileList) |
| UTIL_freeFileList(extendedFileList, fileNamesBuf); |
| else |
| #endif |
| free((void*)inFileNames); |
| return operationResult; |
| } |
