| /* |
| LZ4cli - LZ4 Command Line Interface |
| Copyright (C) Yann Collet 2011-2015 |
| |
| 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 */ |
| |
| |
| /************************************** |
| * Compiler Options |
| ***************************************/ |
| /* cf. http://man7.org/linux/man-pages/man7/feature_test_macros.7.html */ |
| #define _XOPEN_VERSION 600 /* POSIX.2001, for fileno() within <stdio.h> on unix */ |
| |
| |
| /**************************** |
| * Includes |
| *****************************/ |
| #include "util.h" /* Compiler options, UTIL_HAS_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 */ |
| |
| |
| /**************************** |
| * OS-specific Includes |
| *****************************/ |
| #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) |
| # include <io.h> /* _isatty */ |
| # if defined(__DJGPP__) |
| # include <unistd.h> |
| # define _isatty isatty |
| # define _fileno fileno |
| # endif |
| # define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream)) |
| #else |
| # include <unistd.h> /* isatty */ |
| # define IS_CONSOLE(stdStream) isatty(fileno(stdStream)) |
| #endif |
| |
| |
| /***************************** |
| * 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_VERSION_STRING, 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 */ |
| |
| |
| /*-************************************ |
| * Local Variables |
| ***************************************/ |
| static const char* programName; |
| |
| |
| /*-************************************ |
| * 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(void) |
| { |
| DISPLAY( "Usage :\n"); |
| DISPLAY( " %s [arg] [input] [output]\n", programName); |
| 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( " -h/-H : display help/long help and exit\n"); |
| return 0; |
| } |
| |
| static int usage_advanced(void) |
| { |
| DISPLAY(WELCOME_MESSAGE); |
| usage(); |
| 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"); |
| #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(void) |
| { |
| usage_advanced(); |
| 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_MAX_CLEVEL); |
| 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", programName); |
| 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", programName); |
| 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", programName); |
| DISPLAY( " is equivalent to :\n"); |
| DISPLAY( " %s -9f filename \n", programName); |
| DISPLAY( "\n"); |
| DISPLAY( "%s can be used in 'pure pipe mode'. For example :\n", programName); |
| DISPLAY( "-------------------------------------\n"); |
| DISPLAY( "3 : compress data stream from 'generator', send result to 'consumer'\n"); |
| DISPLAY( " generator | %s | consumer \n", programName); |
| #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", programName); |
| DISPLAY( "means 'compress filename in high compression mode'\n"); |
| DISPLAY( "It is not equivalent to :\n"); |
| DISPLAY( " %s -h -c filename\n", programName); |
| DISPLAY( "which would display help text and exit\n"); |
| #endif /* ENABLE_LZ4C_LEGACY_OPTIONS */ |
| return 0; |
| } |
| |
| static int badusage(void) |
| { |
| DISPLAYLEVEL(1, "Incorrect parameters\n"); |
| if (displayLevel >= 1) usage(); |
| exit(1); |
| } |
| |
| |
| static void waitEnter(void) |
| { |
| DISPLAY("Press enter to continue...\n"); |
| (void)getchar(); |
| } |
| |
| |
| /*! 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; |
| } |
| |
| |
| int main(int argc, const char** argv) |
| { |
| int i, |
| cLevel=1, |
| cLevelLast=1, |
| decode=0, |
| bench=0, |
| legacy_format=0, |
| forceStdout=0, |
| forceCompress=0, |
| main_pause=0, |
| multiple_inputs=0, |
| operationResult=0; |
| const char* input_filename=0; |
| const char* output_filename=0; |
| char* dynNameSpace=0; |
| const char** inFileNames = NULL; |
| unsigned ifnIdx=0; |
| char nullOutput[] = NULL_OUTPUT; |
| char extension[] = LZ4_EXTENSION; |
| int blockSize; |
| #ifdef UTIL_HAS_CREATEFILELIST |
| const char** extendedFileList = NULL; |
| char* fileNamesBuf = NULL; |
| unsigned fileNamesNb, recursive=0; |
| #endif |
| |
| /* Init */ |
| programName = argv[0]; |
| LZ4IO_setOverwrite(0); |
| blockSize = LZ4IO_setBlockSizeID(LZ4_BLOCKSIZEID_DEFAULT); |
| |
| /* lz4cat predefined behavior */ |
| if (!strcmp(programName, LZ4CAT)) { decode=1; forceStdout=1; output_filename=stdoutmark; displayLevel=1; } |
| if (!strcmp(programName, UNLZ4)) { decode=1; } |
| |
| /* command switches */ |
| for(i=1; i<argc; i++) { |
| const char* argument = argv[i]; |
| |
| if(!argument) continue; /* Protection if argument empty */ |
| |
| /* long commands (--long-word) */ |
| if (!strcmp(argument, "--compress")) { forceCompress = 1; continue; } |
| if ((!strcmp(argument, "--decompress")) |
| || (!strcmp(argument, "--uncompress"))) { decode = 1; continue; } |
| if (!strcmp(argument, "--multiple")) { multiple_inputs = 1; if (inFileNames==NULL) inFileNames = (const char**)malloc(argc * sizeof(char*)); continue; } |
| if (!strcmp(argument, "--test")) { decode = 1; LZ4IO_setOverwrite(1); output_filename=nulmark; 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; displayLevel=1; 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=4; continue; } |
| if (!strcmp(argument, "--quiet")) { if (displayLevel) displayLevel--; continue; } |
| if (!strcmp(argument, "--version")) { DISPLAY(WELCOME_MESSAGE); return 0; } |
| if (!strcmp(argument, "--keep")) { continue; } /* keep source file (default anyway; just for xz/lzma compatibility) */ |
| |
| /* 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; |
| } |
| |
| 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(); goto _cleanup; |
| case 'H': usage_longhelp(); goto _cleanup; |
| |
| case 'e': |
| argument++; |
| cLevelLast = readU32FromChar(&argument); |
| argument--; |
| break; |
| |
| /* Compression (default) */ |
| case 'z': forceCompress = 1; break; |
| |
| /* Use Legacy format (ex : Linux kernel compression) */ |
| case 'l': legacy_format = 1; blockSize = 8 MB; break; |
| |
| /* Decoding */ |
| case 'd': decode=1; break; |
| |
| /* Force stdout, even if stdout==console */ |
| case 'c': forceStdout=1; output_filename=stdoutmark; displayLevel=1; break; |
| |
| /* Test integrity */ |
| case 't': decode=1; LZ4IO_setTestMode(1); output_filename=nulmark; break; |
| |
| /* Overwrite */ |
| case 'f': LZ4IO_setOverwrite(1); break; |
| |
| /* Verbose mode */ |
| case 'v': displayLevel=4; break; |
| |
| /* Quiet mode */ |
| case 'q': if (displayLevel) displayLevel--; break; |
| |
| /* keep source file (default anyway, so useless) (for xz/lzma compatibility) */ |
| case 'k': break; |
| |
| /* Modify Block Properties */ |
| case 'B': |
| while (argument[1]!=0) { |
| int exitBlockProperties=0; |
| switch(argument[1]) |
| { |
| case '4': |
| case '5': |
| case '6': |
| case '7': |
| { int B = argument[1] - '0'; |
| blockSize = LZ4IO_setBlockSizeID(B); |
| BMK_SetBlockSize(blockSize); |
| argument++; |
| break; |
| } |
| case 'D': LZ4IO_setBlockMode(LZ4IO_blockLinked); argument++; break; |
| case 'X': LZ4IO_setBlockChecksumMode(1); argument ++; break; /* currently disabled */ |
| default : exitBlockProperties=1; |
| } |
| if (exitBlockProperties) break; |
| } |
| break; |
| |
| /* Benchmark */ |
| case 'b': bench=1; multiple_inputs=1; |
| if (inFileNames == NULL) |
| inFileNames = (const char**) malloc(argc * sizeof(char*)); |
| 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; |
| if (inFileNames == NULL) |
| inFileNames = (const char**) malloc(argc * sizeof(char*)); |
| break; |
| |
| /* Modify Nb Seconds (benchmark only) */ |
| case 'i': |
| { unsigned iters; |
| argument++; |
| iters = readU32FromChar(&argument); |
| argument--; |
| BMK_SetNbSeconds(iters); |
| } |
| break; |
| |
| /* Pause at the end (hidden option) */ |
| case 'p': main_pause=1; break; |
| |
| /* Specific commands for customized versions */ |
| EXTENDED_ARGUMENTS; |
| |
| /* Unrecognised command */ |
| default : badusage(); |
| } |
| } |
| 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); |
| if (!decode) DISPLAYLEVEL(4, "Blocks size : %i KB\n", blockSize>>10); |
| |
| /* No input filename ==> use stdin */ |
| if (multiple_inputs) { |
| input_filename = inFileNames[0]; |
| output_filename = (const char*)(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 |
| } |
| 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); |
| } |
| |
| /* Check if benchmark is selected */ |
| if (bench) { |
| operationResult = BMK_benchFiles(inFileNames, ifnIdx, cLevel, cLevelLast); |
| goto _cleanup; |
| } |
| |
| /* No output filename ==> try to select one automatically (when possible) */ |
| while (!output_filename) { |
| if (!IS_CONSOLE(stdout)) { output_filename=stdoutmark; break; } /* Default to stdout whenever possible (i.e. not a console) */ |
| if ((!decode) && !(forceCompress)) { /* auto-determine compression or decompression, based on file extension */ |
| size_t const l = strlen(input_filename); |
| if (!strcmp(input_filename+(l-4), LZ4_EXTENSION)) decode=1; |
| } |
| if (!decode) { /* compression to file */ |
| size_t const l = strlen(input_filename); |
| dynNameSpace = (char*)calloc(1,l+5); |
| if (dynNameSpace==NULL) exit(1); |
| strcpy(dynNameSpace, input_filename); |
| strcat(dynNameSpace, LZ4_EXTENSION); |
| output_filename = dynNameSpace; |
| DISPLAYLEVEL(2, "Compressed filename will be : %s \n", output_filename); |
| break; |
| } |
| /* decompression to file (automatic name will work only if input filename has correct format extension) */ |
| { size_t outl; |
| size_t inl = strlen(input_filename); |
| dynNameSpace = (char*)calloc(1,inl+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(); } |
| output_filename = dynNameSpace; |
| DISPLAYLEVEL(2, "Decoding file %s \n", output_filename); |
| } |
| } |
| |
| /* Check if output is defined as console; trigger an error in this case */ |
| 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 pure pipe mode (stdin + stdout) and multiple file mode */ |
| if (!strcmp(input_filename, stdinmark) && !strcmp(output_filename,stdoutmark) && (displayLevel==2)) displayLevel=1; |
| if ((multiple_inputs) && (displayLevel==2)) displayLevel=1; |
| |
| /* IO Stream/File */ |
| LZ4IO_setNotificationLevel(displayLevel); |
| if (decode) { |
| if (multiple_inputs) |
| operationResult = LZ4IO_decompressMultipleFilenames(inFileNames, ifnIdx, LZ4_EXTENSION); |
| else |
| 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 |
| 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; |
| } |