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Makefile : New install script and man page, contributed by Prasad Pandit

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lz4cli.c : Minor modifications, for easier extensibility
COPYING : added license file
LZ4_Streaming_Format.odt : modified file name to remove white space characters
exe : .exe suffix now properly added only for Windows target

git-svn-id: https://lz4.googlecode.com/svn/trunk@105 650e7d94-2a16-8b24-b05c-7c0b3f6821cd
This commit is contained in:
yann.collet.73@gmail.com 2013-09-25 09:00:37 +00:00
parent a12ed25c1c
commit c63f81c105
8 changed files with 609 additions and 123 deletions
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339
COPYING Normal file
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@ -0,0 +1,339 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

BIN
LZ4 Streaming Format.odt → LZ4_Streaming_Format.odt
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51
Makefile
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@ -19,6 +19,7 @@
#
# You can contact the author at :
# - LZ4 source repository : http://code.google.com/p/lz4/
# - LZ4 forum froup : https://groups.google.com/forum/#!forum/lz4c
# ################################################################
# lz4 : Command Line Utility, supporting gzip-like arguments
# lz4c : CLU, supporting also legacy lz4demo arguments
@ -29,18 +30,31 @@
# fullbench32: Same as fullbench, but forced to compile in 32-bits mode
# ################################################################
RELEASE=r105
PREFIX=/usr
BINDIR=$(PREFIX)/bin
MANDIR=$(PREFIX)/share/man/man1
DISTNAME=lz4-$(RELEASE).tar.gz
CC=gcc
CFLAGS=-I. -std=c99 -Wall -W -Wundef -Wno-implicit-function-declaration
# Define *.exe as extension for Windows systems
OS := $(shell uname)
ifeq ($(OS),Linux)
EXT =
else
# ifeq ($(OS),Windows_NT)
ifneq (,$(filter Windows%,$(OS)))
EXT =.exe
else
EXT =
endif
default: lz4c
SOURCES = bench.c bench.h fullbench.c fuzzer.c lz4.1 lz4.c lz4cli.c \
lz4_format_description.txt lz4.h lz4hc.c lz4hc.h \
LZ4_Streaming_Format.odt Makefile xxhash.c xxhash.h \
NEWS COPYING \
cmake/CMakeLists.txt cmake/pack/release_COPYING.txt \
cmake/pack/CMakeLists.txt
default: lz4 lz4c
all: lz4 lz4c lz4c32 fuzzer fuzzer32 fullbench fullbench32
@ -67,4 +81,29 @@ fullbench32 : lz4.c lz4hc.c xxhash.c fullbench.c
$(CC) -m32 -O3 $(CFLAGS) $^ -o $@$(EXT)
clean:
rm -f core *.o lz4$(EXT) lz4c$(EXT) lz4c32$(EXT) fuzzer$(EXT) fuzzer32$(EXT) fullbench$(EXT) fullbench32$(EXT)
@rm -f core *.o lz4$(EXT) lz4c$(EXT) lz4c32$(EXT) \
fuzzer$(EXT) fuzzer32$(EXT) fullbench$(EXT) fullbench32$(EXT)
@echo Cleaning completed
ifeq ($(shell uname),Linux)
install: lz4
@install -d -m 755 $(BINDIR)/ $(MANDIR)/
@install -m 755 lz4 $(BINDIR)/lz4
@install -m 644 lz4.1 $(MANDIR)/lz4.1
uninstall:
[ -x $(BINDIR)/lz4 ] && rm -f $(BINDIR)/lz4
[ -f $(MANDIR)/lz4.1 ] && rm -f $(MANDIR)/lz4.1
dist: clean
@install -dD -m 700 lz4-$(RELEASE)/cmake/pack/
@for f in $(SOURCES); do \
install -m 600 $$f lz4-$(RELEASE)/$$f; \
done
@tar -czf $(DISTNAME) lz4-$(RELEASE)/
@rm -rf lz4-$(RELEASE)
@echo Distribution $(DISTNAME) built
endif

6
NEWS Normal file
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@ -0,0 +1,6 @@
r105 :
Makefile : New install script and man page, contributed by Prasad Pandit
lz4cli.c : Minor modifications, for easier extensibility
COPYING : added license file
LZ4_Streaming_Format.odt : modified file name to remove white space characters
exe : .exe suffix now properly added only for Windows target

27
bench.c
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@ -105,9 +105,13 @@
#define NBLOOPS 3
#define TIMELOOP 2000
#define KB *(1U<<10)
#define MB *(1U<<20)
#define GB *(1U<<30)
#define KNUTH 2654435761U
#define MAX_MEM (1984<<20)
#define DEFAULT_CHUNKSIZE (4<<20)
#define MAX_MEM (2 GB - 64 MB)
#define DEFAULT_CHUNKSIZE (4 MB)
//**************************************
@ -151,10 +155,7 @@ void BMK_SetNbIterations(int nbLoops)
DISPLAY("- %i iterations -\n", nbIterations);
}
void BMK_SetPause()
{
BMK_pause = 1;
}
void BMK_SetPause() { BMK_pause = 1; }
//*********************************************************
@ -202,10 +203,10 @@ static int BMK_GetMilliSpan( int nTimeStart )
static size_t BMK_findMaxMem(U64 requiredMem)
{
size_t step = (64U<<20); // 64 MB
size_t step = (64 MB);
BYTE* testmem=NULL;
requiredMem = (((requiredMem >> 25) + 1) << 26);
requiredMem = (((requiredMem >> 26) + 1) << 26);
if (requiredMem > MAX_MEM) requiredMem = MAX_MEM;
requiredMem += 2*step;
@ -244,6 +245,7 @@ int BMK_benchFile(char** fileNamesTable, int nbFiles, int cLevel)
int fileIdx=0;
char* orig_buff;
struct compressionParameters compP;
int cfunctionId;
U64 totals = 0;
U64 totalz = 0;
@ -252,7 +254,8 @@ int BMK_benchFile(char** fileNamesTable, int nbFiles, int cLevel)
// Init
switch (cLevel)
if (cLevel <3) cfunctionId = 0; else cfunctionId = 1;
switch (cfunctionId)
{
#ifdef COMPRESSOR0
case 0 : compP.compressionFunction = COMPRESSOR0; break;
@ -395,13 +398,7 @@ int BMK_benchFile(char** fileNamesTable, int nbFiles, int cLevel)
while(BMK_GetMilliSpan(milliTime) < TIMELOOP)
{
for (chunkNb=0; chunkNb<nbChunks; chunkNb++)
//chunkP[chunkNb].origSize = LZ4_decompress_safe(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedSize, chunkSize);
chunkP[chunkNb].compressedSize = LZ4_decompress_fast(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].origSize);
//chunkP[chunkNb].compressedSize = LZ4_decompress_fast_withPrefix64k(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].origSize);
//chunkP[chunkNb].origSize = LZ4_decompress_safe_withPrefix64k(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedSize, chunkSize);
//chunkP[chunkNb].origSize = LZ4_decompress_safe_partial(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedSize, chunkSize-5, chunkSize);
//chunkP[chunkNb].compressedSize = LZ4_uncompress(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].origSize);
//chunkP[chunkNb].origSize = LZ4_uncompress_unknownOutputSize(chunkP[chunkNb].compressedBuffer, chunkP[chunkNb].origBuffer, chunkP[chunkNb].compressedSize, chunkSize);
nbLoops++;
}
milliTime = BMK_GetMilliSpan(milliTime);

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lz4.1 Normal file
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@ -0,0 +1,84 @@
+\"
+\" lz4.1: This is a manual page for 'lz4' program. This file is part of the
+\" lz4 <https://code.google.com/p/lz4/> project.
+\"
+
+\" No hyphenation
+.hy 0
+.nr HY 0
.TH lz4 man
.SH NAME
\fBlz4\fR - Extremely fast compression algorithm
.SH SYNOPSIS
.TP 5
\fBlz4\fR [\fBOPTIONS\fR] [-|INPUT-FILE] <OUTPUT-FILE>
.SH DESCRIPTION
.PP
\fBlz4\fR is an extremely fast lossless compression algorithm. It is based on
the \fBLZ77\fR family of compression scheme. At the compression speed of 400
MB/s per core, \fBlz4\fR is also scalable with multi-core CPUs. It features
an extremely fast decoder, with speed in multiple GB/s per core, typically
reaching the RAM speed limits on multi-core systems. \fBlz4\fR supports
following options
.SH OPTIONS
.TP
.B \-1
fast compression (default)
.TP
.B \-9
high compression
.TP
.B \-d
decompression
.TP
.B \-f
overwrite output without prompting
.TP
.B \-h/\-H
display help/long help and exit
.TP
.B \-V
display Version number and exit
.TP
.B \-v
verbose mode
.TP
.B \-q
suppress warnings; specify twice to suppress errors too
.TP
.B \-c
force write to standard output, even if it is the console
.TP
.B \-t
test compressed file integrity
.TP
.B \-z
force compression
.TP
.B \-B#
block size [4-7](default : 7)
.TP
.B \-BD
block dependency (improve compression ratio)
.TP
.B \-BX
enable block checksum (default:disabled)
.TP
.B \-Sx
disable stream checksum (default:enabled)
.TP
.B \-b
benchmark file(s)
.TP
.B \-i#
iteration loops [1-9](default : 3), benchmark mode only
.SH BUGS
Report bugs at:- https://code.google.com/p/lz4/
.SH AUTHOR
Yann Collet

2
lz4.c
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@ -27,8 +27,8 @@
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
You can contact the author at :
- LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- LZ4 source repository : http://code.google.com/p/lz4/
- LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
*/
//**************************************

191
lz4cli.c
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@ -18,8 +18,8 @@
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
You can contact the author at :
- LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html
- LZ4 source repository : http://code.google.com/p/lz4/
- LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
*/
/*
Note : this is stand-alone program.
@ -57,12 +57,12 @@
//****************************
#include <stdio.h> // fprintf, fopen, fread, _fileno, stdin, stdout
#include <stdlib.h> // malloc
#include <string.h> // strcmp
#include <string.h> // strcmp, strlen
#include <time.h> // clock
#include "lz4.h"
#include "lz4hc.h"
#include "bench.h"
#include "xxhash.h"
#include "bench.h"
//****************************
@ -103,11 +103,11 @@
// Constants
//****************************
#define COMPRESSOR_NAME "LZ4 Compression CLI"
#define COMPRESSOR_VERSION "1.0.4"
#define COMPRESSOR_VERSION "v1.0.5"
#define COMPILED __DATE__
#define AUTHOR "Yann Collet"
#define EXTENSION ".lz4"
#define WELCOME_MESSAGE "*** %s %s %i-bits, by %s (%s) ***\n", COMPRESSOR_NAME, COMPRESSOR_VERSION, (int)(sizeof(void*)*8), AUTHOR, COMPILED
#define LZ4_EXTENSION ".lz4"
#define WELCOME_MESSAGE "*** %s %i-bits %s, by %s (%s) ***\n", COMPRESSOR_NAME, (int)(sizeof(void*)*8), COMPRESSOR_VERSION, AUTHOR, COMPILED
#define KB *(1U<<10)
#define MB *(1U<<20)
@ -190,6 +190,15 @@ static int blockIndependence = 1;
}
//**************************************
// Version modifiers
//**************************************
#define EXTENDED_ARGUMENTS
#define EXTENDED_HELP
#define EXTENDED_FORMAT
#define DEFAULT_COMPRESSOR compress_file
#define DEFAULT_DECOMPRESSOR decodeLZ4S
//****************************
// Functions
@ -204,7 +213,8 @@ int usage()
DISPLAY( "Arguments :\n");
DISPLAY( " -1 : Fast compression (default) \n");
DISPLAY( " -9 : High compression \n");
DISPLAY( " -d : decompression \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;
@ -221,7 +231,6 @@ int usage_advanced()
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( " -z : force 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");
@ -237,6 +246,7 @@ int usage_advanced()
DISPLAY( " -y : overwrite output without prompting \n");
DISPLAY( " -s : suppress warnings \n");
#endif // DISABLE_LZ4C_LEGACY_OPTIONS
EXTENDED_HELP;
return 0;
}
@ -250,9 +260,9 @@ int usage_longhelp()
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( " + if compression selected, output to filename%s \n", EXTENSION);
DISPLAY( " + if decompression selected, output to filename without '%s'\n", EXTENSION);
DISPLAY( " > if input filename has no '%s' extension : error\n", EXTENSION);
DISPLAY( " + if compression selected, output to filename%s \n", LZ4_EXTENSION);
DISPLAY( " + if decompression selected, 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( "There are technically 2 accessible compression levels.\n");
@ -367,12 +377,7 @@ int legacy_compress_file(char* input_filename, char* output_filename, int compre
// Init
switch (compressionlevel)
{
case 0 : compressionFunction = LZ4_compress; break;
case 1 : compressionFunction = LZ4_compressHC; break;
default: compressionFunction = LZ4_compress;
}
if (compressionlevel < 3) compressionFunction = LZ4_compress; else compressionFunction = LZ4_compressHC;
start = clock();
get_fileHandle(input_filename, output_filename, &finput, &foutput);
if ((displayLevel==2) && (compressionlevel==1)) displayLevel=3;
@ -395,12 +400,12 @@ int legacy_compress_file(char* input_filename, char* output_filename, int compre
int inSize = (int) fread(in_buff, (size_t)1, (size_t)LEGACY_BLOCKSIZE, finput);
if( inSize<=0 ) break;
filesize += inSize;
DISPLAYLEVEL(3, "Read : %i MB \r", (int)(filesize>>20));
DISPLAYLEVEL(3, "\rRead : %i MB ", (int)(filesize>>20));
// Compress Block
outSize = compressionFunction(in_buff, out_buff+4, inSize);
compressedfilesize += outSize+4;
DISPLAYLEVEL(3, "Read : %i MB ==> %.2f%%\r", (int)(filesize>>20), (double)compressedfilesize/filesize*100);
DISPLAYLEVEL(3, "\rRead : %i MB ==> %.2f%% ", (int)(filesize>>20), (double)compressedfilesize/filesize*100);
// Write Block
* (unsigned int*) out_buff = LITTLE_ENDIAN_32(outSize);
@ -449,22 +454,21 @@ int compress_file_blockDependency(char* input_filename, char* output_filename, i
// Init
start = clock();
if ((displayLevel==2) && (compressionlevel==1)) displayLevel=3;
switch (compressionlevel)
if ((displayLevel==2) && (compressionlevel>=3)) displayLevel=3;
if (compressionlevel>=3)
{
case 0 :
initFunction = LZ4_create;
compressionFunction = LZ4_compress_limitedOutput_continue;
translateFunction = LZ4_slideInputBuffer;
freeFunction = LZ4_free;
break;
case 1 :
default:
initFunction = LZ4_createHC;
compressionFunction = LZ4_compressHC_limitedOutput_continue;
translateFunction = LZ4_slideInputBufferHC;
freeFunction = LZ4_freeHC;
}
else
{
initFunction = LZ4_create;
compressionFunction = LZ4_compress_limitedOutput_continue;
translateFunction = LZ4_slideInputBuffer;
freeFunction = LZ4_free;
}
get_fileHandle(input_filename, output_filename, &finput, &foutput);
blockSize = LZ4S_GetBlockSize_FromBlockId (blockSizeId);
@ -503,14 +507,14 @@ int compress_file_blockDependency(char* input_filename, char* output_filename, i
inSize = (unsigned int) fread(in_start, (size_t)1, (size_t)blockSize, finput);
if( inSize==0 ) break; // No more input : end of compression
filesize += inSize;
DISPLAYLEVEL(3, "Read : %i MB \r", (int)(filesize>>20));
DISPLAYLEVEL(3, "\rRead : %i MB ", (int)(filesize>>20));
if (streamChecksum) XXH32_update(streamChecksumState, in_start, inSize);
// Compress Block
outSize = compressionFunction(ctx, in_start, out_buff+4, inSize, inSize-1);
if (outSize > 0) compressedfilesize += outSize+4; else compressedfilesize += inSize+4;
if (blockChecksum) compressedfilesize+=4;
DISPLAYLEVEL(3, "Read : %i MB ==> %.2f%%\r", (int)(filesize>>20), (double)compressedfilesize/filesize*100);
DISPLAYLEVEL(3, "\rRead : %i MB ==> %.2f%% ", (int)(filesize>>20), (double)compressedfilesize/filesize*100);
// Write Block
if (outSize > 0)
@ -600,13 +604,8 @@ int compress_file(char* input_filename, char* output_filename, int compressionle
// Init
start = clock();
if ((displayLevel==2) && (compressionlevel==1)) displayLevel=3;
switch (compressionlevel)
{
case 0 : compressionFunction = LZ4_compress_limitedOutput; break;
case 1 : compressionFunction = LZ4_compressHC_limitedOutput; break;
default: compressionFunction = LZ4_compress_limitedOutput;
}
if ((displayLevel==2) && (compressionlevel>=3)) displayLevel=3;
if (compressionlevel < 3) compressionFunction = LZ4_compress_limitedOutput; else compressionFunction = LZ4_compressHC_limitedOutput;
get_fileHandle(input_filename, output_filename, &finput, &foutput);
blockSize = LZ4S_GetBlockSize_FromBlockId (blockSizeId);
@ -643,14 +642,14 @@ int compress_file(char* input_filename, char* output_filename, int compressionle
unsigned int outSize;
filesize += readSize;
DISPLAYLEVEL(3, "Read : %i MB \r", (int)(filesize>>20));
DISPLAYLEVEL(3, "\rRead : %i MB ", (int)(filesize>>20));
if (streamChecksum) XXH32_update(streamChecksumState, in_buff, (int)readSize);
// Compress Block
outSize = compressionFunction(in_buff, out_buff+4, (int)readSize, (int)readSize-1);
if (outSize > 0) compressedfilesize += outSize+4; else compressedfilesize += readSize+4;
if (blockChecksum) compressedfilesize+=4;
DISPLAYLEVEL(3, "Read : %i MB ==> %.2f%%\r", (int)(filesize>>20), (double)compressedfilesize/filesize*100);
DISPLAYLEVEL(3, "\rRead : %i MB ==> %.2f%% ", (int)(filesize>>20), (double)compressedfilesize/filesize*100);
// Write Block
if (outSize > 0)
@ -736,13 +735,12 @@ unsigned long long decodeLegacyStream(FILE* finput, FILE* foutput)
// Main Loop
while (1)
{
size_t uselessRet;
int sinkint;
int decodeSize;
size_t sizeCheck;
// Block Size
uselessRet = fread(&blockSize, 1, 4, finput);
if( uselessRet==0 ) break; // Nothing to read : file read is completed
sizeCheck = fread(&blockSize, 1, 4, finput);
if (sizeCheck==0) break; // Nothing to read : file read is completed
blockSize = LITTLE_ENDIAN_32(blockSize); // Convert to Little Endian
if (blockSize > LZ4_COMPRESSBOUND(LEGACY_BLOCKSIZE))
{ // Cannot read next block : maybe new stream ?
@ -751,16 +749,16 @@ unsigned long long decodeLegacyStream(FILE* finput, FILE* foutput)
}
// Read Block
uselessRet = fread(in_buff, 1, blockSize, finput);
sizeCheck = fread(in_buff, 1, blockSize, finput);
// Decode Block
sinkint = LZ4_decompress_safe(in_buff, out_buff, blockSize, LEGACY_BLOCKSIZE);
if (sinkint < 0) EXM_THROW(52, "Decoding Failed ! Corrupted input detected !");
filesize += sinkint;
decodeSize = LZ4_decompress_safe(in_buff, out_buff, blockSize, LEGACY_BLOCKSIZE);
if (decodeSize < 0) EXM_THROW(52, "Decoding Failed ! Corrupted input detected !");
filesize += decodeSize;
// Write Block
sizeCheck = fwrite(out_buff, 1, sinkint, foutput);
if (sizeCheck != (size_t)sinkint) EXM_THROW(53, "Write error : cannot write decoded block into output\n");
sizeCheck = fwrite(out_buff, 1, decodeSize, foutput);
if (sizeCheck != (size_t)decodeSize) EXM_THROW(53, "Write error : cannot write decoded block into output\n");
}
// Free
@ -905,7 +903,7 @@ unsigned long long decodeLZ4S(FILE* finput, FILE* foutput)
if (!blockIndependenceFlag)
{
out_start += decodedBytes;
if (out_start + maxBlockSize > out_end)
if ((size_t)(out_end - out_start) < (size_t)maxBlockSize)
{
memcpy(out_buff, out_start - prefix64k, prefix64k);
out_start = out_buff + prefix64k;
@ -948,7 +946,7 @@ unsigned long long selectDecoder( FILE* finput, FILE* foutput)
switch(magicNumber)
{
case LZ4S_MAGICNUMBER:
return decodeLZ4S(finput, foutput);
return DEFAULT_DECOMPRESSOR(finput, foutput);
case LEGACY_MAGICNUMBER:
DISPLAYLEVEL(4, "Detected : Legacy format \n");
return decodeLegacyStream(finput, foutput);
@ -960,6 +958,7 @@ unsigned long long selectDecoder( FILE* finput, FILE* foutput)
errorNb = fseek(finput, size, SEEK_CUR);
if (errorNb != 0) EXM_THROW(43, "Stream error : cannot skip skippable area");
return selectDecoder(finput, foutput);
EXTENDED_FORMAT;
default:
if (ftell(finput) == MAGICNUMBER_SIZE) EXM_THROW(44,"Unrecognized header : file cannot be decoded"); // Wrong magic number at the beginning of 1st stream
DISPLAYLEVEL(2, "Stream followed by unrecognized data\n");
@ -1004,6 +1003,13 @@ int decodeFile(char* input_filename, char* output_filename)
}
void waitEnter()
{
DISPLAY("Press enter to continue...\n");
getchar();
}
int main(int argc, char** argv)
{
int i,
@ -1012,11 +1018,13 @@ int main(int argc, char** argv)
bench=0,
filenamesStart=2,
legacy_format=0,
forceStdout=0;
forceStdout=0,
forceCompress=0,
pause=0;
char* input_filename=0;
char* output_filename=0;
char nullOutput[] = NULL_OUTPUT;
char extension[] = EXTENSION;
char extension[] = LZ4_EXTENSION;
// Init
programName = argv[0];
@ -1042,14 +1050,12 @@ int main(int argc, char** argv)
argument ++;
#if !defined(DISABLE_LZ4C_LEGACY_OPTIONS)
// Legacy options (-c0, -c1, -hc, -y, -s, -b0, -b1)
// Legacy options (-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=1; argument++; continue; } // -c1 (high compression)
if ((argument[0]=='h') && (argument[1]=='c')) { cLevel=1; argument++; continue; } // -hc (high 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') { overwrite=1; continue; } // -y (answer 'yes' to overwrite permission)
if (*argument=='s') { displayLevel=1; continue; } // -s (silent mode)
if ((argument[0]=='b') && (argument[1]=='0')) { bench=1; cLevel=0; argument++; continue; } // -b0 (fast bench)
if ((argument[0]=='b') && (argument[1]=='1')) { bench=1; cLevel=1; argument++; continue; } // -b1 (HC bench)
#endif // DISABLE_LZ4C_LEGACY_OPTIONS
switch(argument[0])
@ -1060,19 +1066,19 @@ int main(int argc, char** argv)
case 'H': usage_advanced(); usage_longhelp(); return 0;
// Compression (default)
case 'z': break;
case 'z': forceCompress = 1; break;
// Compression level
case '0':
case '1':
case '2': cLevel=0; break;
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': cLevel=1; break;
case '9': cLevel=*argument -'0'; break;
// Use Legacy format (hidden option)
case 'l': legacy_format=1; break;
@ -1141,8 +1147,10 @@ int main(int argc, char** argv)
}
break;
// Pause at the end (benchmark only) (hidden option)
case 'p': BMK_SetPause(); break;
// Pause at the end (hidden option)
case 'p': pause=1; BMK_SetPause(); break;
EXTENDED_ARGUMENTS;
// Unrecognised command
default : badusage();
@ -1163,59 +1171,72 @@ int main(int argc, char** argv)
}
}
DISPLAYLEVEL(4, WELCOME_MESSAGE);
DISPLAYLEVEL(3, WELCOME_MESSAGE);
DISPLAYLEVEL(4, "Blocks size : %i KB\n", (1 << ((blockSizeId*2)-2)));
// No input filename ==> use stdin
if(!input_filename) { input_filename=stdinmark; }
// Check if input or output are defined as console; trigger an error in this case
if (!strcmp(input_filename, stdinmark) && IS_CONSOLE(stdin) ) badusage();
// Check if benchmark is selected
if (bench) return BMK_benchFile(argv+filenamesStart, argc-filenamesStart, cLevel);
// No output filename ==> select one automatically (when possible)
if (!output_filename)
// No output filename ==> try to select one automatically (when possible)
while (!output_filename)
{
if (!IS_CONSOLE(stdout)) { output_filename=stdoutmark; }
else if (!decode) // compression
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
{
int i=0, l=0;
while (input_filename[l]!=0) l++;
output_filename = (char*)calloc(1,l+5);
for (i=0;i<l;i++) output_filename[i] = input_filename[i];
for (i=l;i<l+4;i++) output_filename[i] = extension[i-l];
DISPLAYLEVEL(2, "Compressed filename will be : %s \n", output_filename);
size_t l = strlen(input_filename);
if (!strcmp(input_filename+(l-4), LZ4_EXTENSION)) decode=1;
}
else // decompression (input file must respect format extension ".lz4")
if (!decode) // compression to file
{
int inl=0,outl;
while (input_filename[inl]!=0) inl++;
size_t l = strlen(input_filename);
output_filename = (char*)calloc(1,l+5);
strcpy(output_filename, input_filename);
strcpy(output_filename+l, LZ4_EXTENSION);
DISPLAYLEVEL(2, "Compressed filename will be : %s \n", output_filename);
break;
}
// decompression to file (automatic name will work only if input filename has format extension ".lz4")
{
size_t outl;
size_t inl = strlen(input_filename);
output_filename = (char*)calloc(1,inl+1);
for (outl=0;outl<inl;outl++) output_filename[outl] = input_filename[outl];
strcpy(output_filename, input_filename);
outl = inl;
if (inl>4)
while ((outl >= inl-4) && (input_filename[outl] == extension[outl-inl+4])) output_filename[outl--]=0;
if (outl != inl-5) { DISPLAYLEVEL(1, "Cannot automatically decide an output filename\n"); badusage(); }
if (outl != inl-5) { DISPLAYLEVEL(1, "Cannot determine an output filename\n"); badusage(); }
DISPLAYLEVEL(2, "Decoding file %s \n", output_filename);
}
}
// No warning message in pure pipe mode (stdin + stdout)
if (!strcmp(input_filename, stdinmark) && !strcmp(output_filename,stdoutmark) && (displayLevel>1) && (displayLevel<4)) displayLevel=1;
if (!strcmp(input_filename, stdinmark) && !strcmp(output_filename,stdoutmark) && (displayLevel==2)) displayLevel=1;
// Check if input or output are defined as console; trigger an error in this case
if (!strcmp(input_filename, stdinmark) && IS_CONSOLE(stdin) ) badusage();
if (!strcmp(output_filename,stdoutmark) && IS_CONSOLE(stdout) && !forceStdout) badusage();
// Decompress input if selected
if (decode) return decodeFile(input_filename, output_filename);
if (decode) decodeFile(input_filename, output_filename);
else
// compression is default action
{
if (legacy_format)
{
DISPLAYLEVEL(2, "! Generating compressed LZ4 using Legacy format (deprecated !) ! \n");
return legacy_compress_file(input_filename, output_filename, cLevel);
legacy_compress_file(input_filename, output_filename, cLevel);
}
else
{
return compress_file(input_filename, output_filename, cLevel);
DEFAULT_COMPRESSOR(input_filename, output_filename, cLevel);
}
}
if (pause) waitEnter();
}