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cosmopolitan/third_party/lz4cli/lz4cli.c
Justine Tunney 80b211e314 Add raw memory visualization tool to redbean 
This change introduces a `-W /dev/pts/1` flag to redbean. What it does
is use the mincore() system call to create a dual-screen terminal
display that lets you troubleshoot the virtual address space. This is
useful since page faults are an important thing to consider when using a
forking web server. Now we have a colorful visualization of which pages
are going to fault and which ones are resident in memory.

The memory monitor, if enabled, spawns as a thread that just outputs
ANSI codes to the second terminal in a loop. In order to make this
happen using the new clone() polyfill, stdio is now thread safe.

This change also introduces some new demo pages to redbean. It also
polishes the demos we already have, to look a bit nicer and more
presentable for the upcoming release, with better explanations too.
2022-05-14 04:33:58 -07:00

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/* clang-format off */
/*
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.
*/
asm(".include \"third_party/lz4cli/COPYING\"");
/****************************
* Includes
*****************************/
#include "third_party/lz4cli/platform.h" /* Compiler options, IS_CONSOLE */
#include "third_party/lz4cli/util.h" /* UTIL_HAS_CREATEFILELIST, UTIL_createFileList */
#include "libc/stdio/stdio.h" /* fprintf, getchar */
#include "libc/mem/mem.h" /* exit, calloc, free */
#include "libc/str/str.h" /* strcmp, strlen */
#include "third_party/lz4cli/bench.h" /* BMK_benchFile, BMK_SetNbIterations, BMK_SetBlocksize, BMK_SetPause */
#include "third_party/lz4cli/lz4io.h" /* LZ4IO_compressFilename, LZ4IO_decompressFilename, LZ4IO_compressMultipleFilenames */
#include "third_party/lz4cli/lz4hc.h" /* LZ4HC_CLEVEL_MAX */
#include "libc/runtime/runtime.h"
#include "libc/log/log.h"
#include "libc/stdio/stdio.h"
#include "third_party/lz4cli/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 LZ4_LEGACY "lz4c"
static int g_lz4c_legacy_commands = 0;
#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
***************************************/
#ifndef DEBUG
#define DEBUG 0
#endif
#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 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( " -D FILE: use FILE as dictionary \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");
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( "--favor-decSpeed: compressed files decompress faster, but are less compressed \n");
DISPLAY( "--fast[=#]: switch to ultra fast compression level (default: %u)\n", 1);
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 (g_lz4c_legacy_commands) {
DISPLAY( "Legacy arguments : \n");
DISPLAY( " -c0 : fast compression \n");
DISPLAY( " -c1 : high compression \n");
DISPLAY( " -c2,-hc: very high compression \n");
DISPLAY( " -y : overwrite output without prompting \n");
}
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 (g_lz4c_legacy_commands) {
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 displays help text and exits \n");
}
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 = path;
if (strrchr(name, '/')) name = strrchr(name, '/') + 1;
if (strrchr(name, '\\')) name = strrchr(name, '\\') + 1; /* windows */
return name;
}
/*! exeNameMatch() :
@return : a non-zero value if exeName matches test, excluding the extension
*/
static int exeNameMatch(const char* exeName, const char* test)
{
return !strncmp(exeName, test, strlen(test)) &&
(exeName[strlen(test)] == '\0' || exeName[strlen(test)] == '.');
}
/*! 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 result can overflow if digit string > MAX_UINT */
static unsigned readU32FromChar(const char** stringPtr)
{
unsigned result = 0;
while ((**stringPtr >='0') && (**stringPtr <='9')) {
result *= 10;
result += **stringPtr - '0';
(*stringPtr)++ ;
}
if ((**stringPtr=='K') || (**stringPtr=='M')) {
result <<= 10;
if (**stringPtr=='M') result <<= 10;
(*stringPtr)++ ;
if (**stringPtr=='i') (*stringPtr)++;
if (**stringPtr=='B') (*stringPtr)++;
}
return result;
}
/** longCommandWArg() :
* check if *stringPtr is the same as longCommand.
* If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand.
* @return 0 and doesn't modify *stringPtr otherwise.
*/
static unsigned longCommandWArg(const char** stringPtr, const char* longCommand)
{
size_t const comSize = strlen(longCommand);
int const result = !strncmp(*stringPtr, longCommand, comSize);
if (result) *stringPtr += comSize;
return result;
}
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=-10000,
legacy_format=0,
forceStdout=0,
main_pause=0,
multiple_inputs=0,
all_arguments_are_files=0,
operationResult=0;
operationMode_e mode = om_auto;
const char* input_filename = NULL;
const char* output_filename= NULL;
const char* dictionary_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);
/* predefined behaviors, based on binary/link name */
if (exeNameMatch(exeName, LZ4CAT)) {
mode = om_decompress;
LZ4IO_setOverwrite(1);
LZ4IO_setRemoveSrcFile(0);
forceStdout=1;
output_filename=stdoutmark;
displayLevel=1;
multiple_inputs=1;
}
if (exeNameMatch(exeName, UNLZ4)) { mode = om_decompress; }
if (exeNameMatch(exeName, LZ4_LEGACY)) { g_lz4c_legacy_commands=1; }
/* 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 (!all_arguments_are_files && 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, "--")) { all_arguments_are_files = 1; continue; }
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, "--favor-decSpeed")) { LZ4IO_favorDecSpeed(1); 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; }
if (longCommandWArg(&argument, "--fast")) {
/* Parse optional acceleration factor */
if (*argument == '=') {
U32 fastLevel;
++argument;
fastLevel = readU32FromChar(&argument);
if (fastLevel) {
cLevel = -(int)fastLevel;
} else {
badusage(exeName);
}
} else if (*argument != 0) {
/* Invalid character following --fast */
badusage(exeName);
} else {
cLevel = -1; /* default for --fast */
}
continue;
}
}
while (argument[1]!=0) {
argument ++;
if (g_lz4c_legacy_commands) {
/* Legacy commands (-c0, -c1, -hc, -y) */
if (!strcmp(argument, "c0")) { cLevel=0; argument++; continue; } /* -c0 (fast compression) */
if (!strcmp(argument, "c1")) { cLevel=9; argument++; continue; } /* -c1 (high compression) */
if (!strcmp(argument, "c2")) { cLevel=12; argument++; continue; } /* -c2 (very high compression) */
if (!strcmp(argument, "hc")) { cLevel=12; argument++; continue; } /* -hc (very high compression) */
if (!strcmp(argument, "y")) { LZ4IO_setOverwrite(1); continue; } /* -y (answer 'yes' to overwrite permission) */
}
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;
case 'D':
if (argument[1] == '\0') {
/* path is next arg */
if (i + 1 == argc) {
/* there is no next arg */
badusage(exeName);
}
dictionary_filename = argv[++i];
} else {
/* path follows immediately */
dictionary_filename = argument + 1;
}
/* skip to end of argument so that we jump to parsing next argument */
argument += strlen(argument) - 1;
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;
/* hidden command : benchmark files, but do not fuse result */
case 'S': BMK_setBenchSeparately(1);
break;
#ifdef UTIL_HAS_CREATEFILELIST
/* recursive */
case 'r': recursive=1;
#endif
/* fall-through */
/* 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;
/* 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 : %u 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 */
}
if (dictionary_filename) {
if (!strcmp(dictionary_filename, stdinmark) && IS_CONSOLE(stdin)) {
DISPLAYLEVEL(1, "refusing to read from a console\n");
exit(1);
}
LZ4IO_setDictionaryFilename(dictionary_filename);
}
/* 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 LZ4 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();
free(dynNameSpace);
#ifdef UTIL_HAS_CREATEFILELIST
if (extendedFileList) {
UTIL_freeFileList(extendedFileList, fileNamesBuf);
inFileNames = NULL;
}
#endif
free((void*)inFileNames);
return operationResult;
}
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