diff options
Diffstat (limited to 'Build/source/utils/lzma-utils/src/lzma')
-rw-r--r-- | Build/source/utils/lzma-utils/src/lzma/Exception.h | 45 | ||||
-rw-r--r-- | Build/source/utils/lzma-utils/src/lzma/Makefile.am | 40 | ||||
-rw-r--r-- | Build/source/utils/lzma-utils/src/lzma/Makefile.in | 653 | ||||
-rw-r--r-- | Build/source/utils/lzma-utils/src/lzma/lzma.1 | 228 | ||||
-rw-r--r-- | Build/source/utils/lzma-utils/src/lzma/lzmp.cpp | 895 |
5 files changed, 1861 insertions, 0 deletions
diff --git a/Build/source/utils/lzma-utils/src/lzma/Exception.h b/Build/source/utils/lzma-utils/src/lzma/Exception.h new file mode 100644 index 00000000000..6bae26f8b90 --- /dev/null +++ b/Build/source/utils/lzma-utils/src/lzma/Exception.h @@ -0,0 +1,45 @@ +/* A couple of exceptions for lzmp. + * + * Copyright (C) 2005 Ville Koskinen + * + * 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. + */ + +#ifndef _EXCEPTION_H_ +#define _EXCEPTION_H_ + +#include <string> +using std::string; + +class Exception +{ +private: + string message; +public: + Exception(char *what): message(what) { } + Exception(string what): message(what) { } + + ~Exception() { } + + string what(void) { return message; } +}; + +class ArgumentException: public Exception +{ +public: + ArgumentException(char *what): Exception(what) { } + ArgumentException(string what): Exception(what) { } + + ~ArgumentException() { } +}; + +#endif + diff --git a/Build/source/utils/lzma-utils/src/lzma/Makefile.am b/Build/source/utils/lzma-utils/src/lzma/Makefile.am new file mode 100644 index 00000000000..ff19d581419 --- /dev/null +++ b/Build/source/utils/lzma-utils/src/lzma/Makefile.am @@ -0,0 +1,40 @@ +AM_CXXFLAGS = @SDK_CXXFLAGS@ -I../ -I../sdk -I../sdk/7zip + +# Avoid dependency on libstdc++: +#AM_LDFLAGS = -lsupc++ -static-libgcc + +bin_PROGRAMS = lzma + +lzma_SOURCES = lzmp.cpp Exception.h \ + ../sdk/Common/C_FileIO.cpp \ + ../sdk/Common/CRC.cpp \ + ../sdk/Common/Alloc.cpp \ + ../sdk/7zip/Common/FileStreams.cpp \ + ../sdk/7zip/Common/InBuffer.cpp \ + ../sdk/7zip/Common/OutBuffer.cpp + +lzma_LDADD = ../sdk/7zip/Compress/LZMA/libLZMA.a \ + ../sdk/7zip/Compress/LZ/libLZ.a \ + ../sdk/7zip/Common/libCommon.a \ + ../sdk/7zip/Compress/RangeCoder/libRangeCoder.a + +dist_man_MANS = lzma.1 + +# Create symlinks for unlzma and lzcat: +install-exec-hook: + cd $(DESTDIR)$(bindir) && \ + rm -f unlzma lzcat && \ + $(LN_S) lzma unlzma && \ + $(LN_S) lzma lzcat + +install-data-hook: + cd $(DESTDIR)$(mandir)/man1 && \ + rm -f unlzma.1 lzcat.1 && \ + $(LN_S) lzma.1 unlzma.1 && \ + $(LN_S) lzma.1 lzcat.1 + +uninstall-hook: + cd $(DESTDIR)$(bindir) && \ + rm -f unlzma lzcat + cd $(DESTDIR)$(mandir)/man1 && \ + rm -f unlzma.1 lzcat.1 diff --git a/Build/source/utils/lzma-utils/src/lzma/Makefile.in b/Build/source/utils/lzma-utils/src/lzma/Makefile.in new file mode 100644 index 00000000000..a7f72c21bce --- /dev/null +++ b/Build/source/utils/lzma-utils/src/lzma/Makefile.in @@ -0,0 +1,653 @@ +# Makefile.in generated by automake 1.10 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = 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and lzcat: +install-exec-hook: + cd $(DESTDIR)$(bindir) && \ + rm -f unlzma lzcat && \ + $(LN_S) lzma unlzma && \ + $(LN_S) lzma lzcat + +install-data-hook: + cd $(DESTDIR)$(mandir)/man1 && \ + rm -f unlzma.1 lzcat.1 && \ + $(LN_S) lzma.1 unlzma.1 && \ + $(LN_S) lzma.1 lzcat.1 + +uninstall-hook: + cd $(DESTDIR)$(bindir) && \ + rm -f unlzma lzcat + cd $(DESTDIR)$(mandir)/man1 && \ + rm -f unlzma.1 lzcat.1 +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/Build/source/utils/lzma-utils/src/lzma/lzma.1 b/Build/source/utils/lzma-utils/src/lzma/lzma.1 new file mode 100644 index 00000000000..dfcbac329b7 --- /dev/null +++ b/Build/source/utils/lzma-utils/src/lzma/lzma.1 @@ -0,0 +1,228 @@ +.TH LZMA 1 "23 Dec 2005" "LZMA utils" + +.SH NAME +lzma, unlzma, lzcat \- LZMA compression and decompression tool + +.SH SYNOPSIS +.B lzma +.RB [ \-123456789cdefhkLqtvV "] [" \-S +.IR suffix "] [" "filenames ..." ] +.br +.B unlzma +.RB [ \-cfhkLqtvV "] [" \-S +.IR suffix "] [" "filenames ..." ] +.br +.B lzcat +.RB [ \-fhLqV ] +.RI [ "filenames ..." ] + +.SH DESCRIPTION +LZMA (Lempel-Ziv-Markov chain-Algorithm) is an improved version of +famous LZ77 compression algorithm. It was improved in way of maximum +increasing of compression ratio, keeping high decompression speed and +low memory requirements for decompressing. +.PP +.B lzma +command line tool has a similar interface to +.BR gzip (1) +and +.BR bzip2 (1) +and is intended to make use of LZMA compression easy for the users who +are already familiar with gzip and bzip2. +.PP +In this manual +.B lzma +is compared mostly to bzip2 because that is currently one of the most +widely used free software to compress tar files made for distribution. +Comparing lzma to gzip is not practical because neither lzma nor bzip2 +can compete with gzip in compression speed. On the other hand the +compression ratio of gzip is worse than of lzma and bzip2. +.PP +.B lzma +provides notably better compression ratio than bzip2 especially with +files having other than plain text content. The other advantage of +.B lzma +is fast decompression which is many times quicker than bzip2. The major +disadvantage is that achieving the highest compression ratios requires +extensive amount of system resources, both CPU time and RAM. Also +software to handle LZMA compressed files is not installed by default on +most distributions. +.PP +When compressing or decompressing with +.BR lzma , +the new file will have the same ownership information, permissions and +timestamps as the original file. However the this information is not +stored into the compressed file like gzip does. + +.SH STREAMED VS. NON-STREAMED +LZMA files can be either streamed or non-streamed. Non-streamed files +are created only when the size of the file being compressed is known. In +practice this means that the source file must be a regular file. In +other words, if compressing from the standard input or from a named pipe +(fifo) the compressed file will always be streamed. +.PP +Both streamed and non-streamed files are compressed identically; the +only differences are found from the beginnings and ends of LZMA +compressed files: Non-streamed files contain the uncompressed size of +the file in the LZMA file header; streamed files have uncompressed size +marked as unknown. To know where to stop decoding, streamed files have a +special End Of Stream marker at the end of the LZMA file. The EOS marker +makes streamed files five or six bytes bigger than non-streamed. +.PP +So in practice creating non-streamed files has two advantages: 1) the +compressed file is a few bytes smaller and 2) the uncompressed size of +the file can be checked without decompressing the file. To view the data +stored in the LZMA header use +.BR lzmainfo (1). + +.SH OPTIONS +Short options can be grouped like +.BR \-cd. +.TP +.B \-c \-\-stdout \-\-to\-stdout +The output is written to the standard output. The original files are kept +unchanged. When compressing to the standard output there can be only one +input file. This option is implied when input is read from the standard +input or the script is invoked as +.BR lzcat . +.TP +.B \-d \-\-decompress \-\-uncompress +Force decompression regardless of the invocation name. This the default +when called as +.B unlzma +or +.BR lzcat . +.TP +.B \-f \-\-force +Force compression or decompression even if source file is a symlink, +target exists, or target is a terminal. In contrast to gzip and bzip2, +if input data is not in LZMA format, \-\-force does not make lzma +behave like +.BR cat . +.B lzma +never prompts if target file should be overwritten; existing files are +skipped or, in case of +.BR \-\-force , +overwritten. +.TP +.B \-h \-\-help +Show a summary of supported options and quit. +.TP +.B \-k \-\-keep +Do not delete the input files after compression or decompression. +.TP +.B \-L \-\-license +Show licensing information of +.BR lzma . +.TP +.B \-q \-\-quiet +Suppress all warnings. You can still check the exit status to detect if +a warning had been shown. +.TP +.BI "\-S \-\-suffix " .suf +Use +.I .suf +instead of the default +.BR .lzma . +A null suffix forces unlzma to decompress all the given files +regardless of the filename suffix. +.TP +.B \-t \-\-test +Check the integrity of the compressed file(s). Without +.B \-\-verbose +no output is produced if no errors are found. +.TP +.B \-v \-\-verbose +Show the filename and percentage reduction of each processes file. +.TP +.B \-V \-\-version +Show the version number of +.BR lzma . +.TP +.B \-z \-\-compress +Force compression regardless of the invocation name. +.TP +.BR \-1 " .. " \-9 +Set the compression ratio. See the next chapter for detailed +information. These options have no effect when decompressing. +.TP +.B \-\-fast +Alias to +.BR \-1 . +.TP +.B \-\-best +Alias to +.BR \-9 . + +.SH COMPRESSION OPTIONS AND MEMORY USAGE +The compression options of +.B lzma +are divided to two groups. The first two +.RB ( \-1 " and " \-2 ) +are designed for fast compression speed. +.BR \-3 " .. " \-9 +provide good to excellent compression ratio but require more CPU time +and system memory. +.PP +For relatively fast compression with medium compression ratio +.B \-1 +is the recommended setting. It's faster than 'bzip2 \-\-fast' and +usually creates smaller files than 'bzip2 \-\-best'. +.B \-2 +makes somewhat smaller files but doubles the compression time close to +what 'bzip2 \-\-best' takes. +.PP +Generally for excellent compression ratio, acceptable compression time +and memory requirements (about 83 MB for compression, 9 MB for +decompression) you should use +.B \-7 +which is also the default. +.B \-8 +and +.B \-9 +will give some gain especially with bigger files (>=tens of megabytes) +but also increase the CPU and memory requirements dramatically. See the +table below for memory requirements of different compression settings. +.PP + Flag Compress usage Decompress usage + -1 2 MB 1 MB + -2 12 MB 2 MB + -3 12 MB 1 MB + -4 16 MB 2 MB + -5 26 MB 3 MB + -6 45 MB 5 MB + -7 83 MB 9 MB + -8 159 MB 17 MB + -9 311 MB 33 MB + +.SH DIAGNOSTICS +Exit status: +.br +.B 0 +\- Everything OK. +.br +.B 1 +\- An error occurred. +.br +.B 2 +\- Something worth a warning happened but no errors. + +.SH AUTHORS +The LZMA algorithm and the implementation used in LZMA utils was +developed by Igor Pavlov. The original code is available in LZMA SDK +which can be found from http://7-zip.org/sdk.html . +.PP +.B lzma +command line tool was written by Ville Koskinen. +http://tukaani.org/lzma/ +.PP +This manual page is inspired by manual pages of +.B gzip +and +.BR bzip2 . + +.SH SEE ALSO +.BR lzmadec (1), +.BR lzmainfo (1), +.BR gzip (1), +.BR bzip2 (1) diff --git a/Build/source/utils/lzma-utils/src/lzma/lzmp.cpp b/Build/source/utils/lzma-utils/src/lzma/lzmp.cpp new file mode 100644 index 00000000000..4a53de7010b --- /dev/null +++ b/Build/source/utils/lzma-utils/src/lzma/lzmp.cpp @@ -0,0 +1,895 @@ +/* + * LZMA command line tool similar to gzip to encode and decode LZMA files. + * + * Copyright (C) 2005 Ville Koskinen + * + * 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. + */ + +#include "sdk/Common/MyInitGuid.h" +#include "sdk/Common/MyWindows.h" + +#include <iostream> +using std::cout; +using std::cerr; +using std::endl; + +#include <cstdio> +#include <cstring> + +#include <string> +using std::string; +#include <vector> +using std::vector; +typedef vector<string> stringVector; + +#include <unistd.h> +#include <getopt.h> +#include <signal.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <utime.h> +#include <sys/time.h> // futimes() + +// For Solaris +#ifndef HAVE_FUTIMES +#define futimes(fd, tv) futimesat(fd, NULL, tv) +#endif + +#if defined(_WIN32) || defined(OS2) || defined(MSDOS) +#include <fcntl.h> +#include <io.h> +#define MY_SET_BINARY_MODE(file) setmode(fileno(file),O_BINARY) +#else +#define MY_SET_BINARY_MODE(file) +#endif + +#include "sdk/7zip/Common/FileStreams.h" + +#include "sdk/Common/Types.h" + +#include "sdk/7zip/Compress/LZMA/LZMADecoder.h" +#include "sdk/7zip/Compress/LZMA/LZMAEncoder.h" + +#include "Exception.h" + +#include "lzma_version.h" + +namespace lzma { + +const char *PROGRAM_VERSION = PACKAGE_VERSION; +const char *PROGRAM_COPYRIGHT = "Copyright (C) 2005 Ville Koskinen"; + +/* LZMA_Alone switches: + -a{N}: set compression mode - [0, 2], default: 2 (max) + -d{N}: set dictionary - [0,28], default: 23 (8MB) + -fb{N}: set number of fast bytes - [5, 255], default: 128 + -lc{N}: set number of literal context bits - [0, 8], default: 3 + -lp{N}: set number of literal pos bits - [0, 4], default: 0 + -pb{N}: set number of pos bits - [0, 4], default: 2 + -mf{MF_ID}: set Match Finder: [bt2, bt3, bt4, bt4b, pat2r, pat2, + pat2h, pat3h, pat4h, hc3, hc4], default: bt4 +*/ + +struct lzma_option { + short compression_mode; // -a + short dictionary; // -d + short fast_bytes; // -fb + wchar_t *match_finder; // -mf + short literal_context_bits; // -lc + short literal_pos_bits; // -lp + short pos_bits; // -pb +}; + +/* The following is a mapping from gzip/bzip2 style -1 .. -9 compression modes + * to the corresponding LZMA compression modes. Thanks, Larhzu, for coining + * these. */ +const lzma_option option_mapping[] = { + { 0, 0, 0, NULL, 0, 0, 0}, // -0 (needed for indexing) + { 0, 16, 64, L"hc3", 3, 0, 2}, // -1 + { 0, 20, 64, L"hc4", 3, 0, 2}, // -2 + { 1, 19, 64, L"bt4", 3, 0, 2}, // -3 + { 2, 20, 64, L"bt4", 3, 0, 2}, // -4 + { 2, 21, 128, L"bt4", 3, 0, 2}, // -5 + { 2, 22, 128, L"bt4", 3, 0, 2}, // -6 + { 2, 23, 128, L"bt4", 3, 0, 2}, // -7 + { 2, 24, 255, L"bt4", 3, 0, 2}, // -8 + { 2, 25, 255, L"bt4", 3, 0, 2}, // -9 +}; + +struct extension_pair { + char *from; + char *to; +}; + +const extension_pair known_extensions[] = { + { ".lzma", "" }, + { ".tlz", ".tar" }, + { NULL, NULL } +}; + +/* Sorry, I just happen to like enumerations. */ +enum PROGRAM_MODE { + PM_COMPRESS = 0, + PM_DECOMPRESS, + PM_TEST, + PM_HELP, + PM_LICENSE, + PM_VERSION +}; + +enum { + STATUS_OK = 0, + STATUS_ERROR = 1, + STATUS_WARNING = 2 +}; + +/* getopt options. */ +/* struct option { name, has_arg, flag, val } */ +const struct option long_options[] = { + { "stdout", 0, 0, 'c' }, + { "decompress", 0, 0, 'd' }, + { "compress", 0, 0, 'z' }, + { "keep", 0, 0, 'k' }, + { "force", 0, 0, 'f' }, + { "test", 0, 0, 't' }, + { "suffix", 1, 0, 'S' }, + { "quiet", 0, 0, 'q' }, + { "verbose", 0, 0, 'v' }, + { "help", 0, 0, 'h' }, + { "license", 0, 0, 'L' }, + { "version", 0, 0, 'V' }, + { "fast", 0, 0, '1' }, + { "best", 0, 0, '9' }, + { 0, 0, 0, 0 } +}; + +/* getopt option string (for the above options). */ +const char option_string[] = "cdzkftS:qvhLV123456789A:D:F:"; + +/* Defaults. */ +PROGRAM_MODE program_mode = PM_COMPRESS; +int verbosity = 0; +bool stdinput = false; +bool stdoutput = false; +bool keep = false; +bool force = false; +int compression_mode = 7; +//char *suffix = strdup(".lzma"); +char *suffix = strdup(known_extensions[0].from); +lzma_option advanced_options = { -1, -1, -1, NULL, -1, -1, -1 }; + +void print_help(const char *const argv0) +{ + // Help goes to stdout while other messages go to stderr. + cout << "\nlzma " << PROGRAM_VERSION + << " " << PROGRAM_COPYRIGHT << "\n" + "Based on LZMA SDK " << LZMA_SDK_VERSION_STRING << " " + << LZMA_SDK_COPYRIGHT_STRING + << "\n\nUsage: " << argv0 + << " [flags and input files in any order]\n" +" -c --stdout output to standard output\n" +" -d --decompress force decompression\n" +" -z --compress force compression\n" +" -k --keep keep (don't delete) input files\n" +" -f --force force overwrite of output file and compress links\n" +" -t --test test compressed file integrity\n" +" -S .suf --suffix .suf use suffix .suf on compressed files\n" +" -q --quiet suppress error messages\n" +" -v --verbose be verbose\n" +" -h --help print this message\n" +" -L --license display the license information\n" +" -V --version display version numbers of LZMA SDK and lzma\n" +" -1 .. -2 fast compression\n" +" -3 .. -9 good to excellent compression. -7 is the default.\n" +" --fast alias for -1\n" +" --best alias for -9 (usually *not* what you want)\n\n" +" Memory usage depends a lot on the chosen compression mode -1 .. -9.\n" +" See the man page lzma(1) for details.\n\n"; +} + +void print_license(void) +{ + cout << "\n LZMA command line tool " << PROGRAM_VERSION << " - " + << PROGRAM_COPYRIGHT + << "\n LZMA SDK " << LZMA_SDK_VERSION_STRING << " - " + << LZMA_SDK_COPYRIGHT_STRING + << "\n This program is a part of the LZMA utils package.\n" + " http://tukaani.org/lzma/\n\n" +" This program is free software; you can redistribute it and/or\n" +" modify it under the terms of the GNU General Public License\n" +" as published by the Free Software Foundation; either version 2\n" +" of the License, or (at your option) any later version.\n" +"\n" +" This program is distributed in the hope that it will be useful,\n" +" but WITHOUT ANY WARRANTY; without even the implied warranty of\n" +" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" +" GNU General Public License for more details.\n" +"\n"; +} + +void print_version(void) +{ + cout << "LZMA command line tool " << PROGRAM_VERSION << "\n" + << "LZMA SDK " << LZMA_SDK_VERSION_STRING << "\n"; +} + +short str2int (const char *str, const int &min, const int &max) +{ + int value = -1; + char *endptr = NULL; + if (str == NULL || str[0] == '\0') + throw ArgumentException("Invalid integer option"); + value = strtol (str, &endptr, 10); + if (*endptr != '\0' || value < min || value > max) + throw ArgumentException("Invalid integer option"); + return value; +} + +void parse_options(int argc, char **argv, stringVector &filenames) +{ + /* Snatched from getopt(3). */ + int c; + + /* Check how we were called */ + { + char *p = strrchr (argv[0], '/'); // Remove path prefix, if any + if (p++ == NULL) + p = argv[0]; + if (strstr (p, "un") != NULL) { + program_mode = PM_DECOMPRESS; + } else if (strstr (p, "cat") != NULL) { + program_mode = PM_DECOMPRESS; + stdoutput = true; + } + } + + while (-1 != (c = getopt_long(argc, argv, option_string, + long_options, NULL))) { + switch (c) { + // stdout + case 'c': + stdoutput = true; + break; + + // decompress + case 'd': + program_mode = PM_DECOMPRESS; + break; + + // compress + case 'z': + program_mode = PM_COMPRESS; + break; + + // keep + case 'k': + keep = true; + break; + + // force + case 'f': + force = true; + break; + + // test + case 't': + program_mode = PM_TEST; + break; + + // suffix + case 'S': + if (optarg) { + free(suffix); + suffix = strdup(optarg); + } + break; + + // quiet + case 'q': + verbosity = 0; + break; + + // verbose + case 'v': + verbosity++; + break; + + // help + case 'h': + program_mode = PM_HELP; + break; + + // license + case 'L': + program_mode = PM_LICENSE; + break; + + // version + case 'V': + program_mode = PM_VERSION; + break; + + case '1': case '2': case '3': case '4': case '5': + case '6': case '7': case '8': case '9': + compression_mode = c - '0'; + break; + + // Advanced options // + // Compression mode + case 'A': + advanced_options.compression_mode = + str2int (optarg, 0, 2); + break; + + // Dictionary size + case 'D': + advanced_options.dictionary = + str2int (optarg, 0, 28); + break; + + // Fast bytes + case 'F': + advanced_options.fast_bytes = + str2int (optarg, 0, 273); + break; + + default: + throw ArgumentException(""); + break; + } // switch(c) + } // while(1) + + for (int i = optind; i < argc; i++) { + if (strcmp("-", argv[i]) == 0) + continue; + filenames.push_back(argv[i]); + } +} // parse_options + +void set_encoder_properties(NCompress::NLZMA::CEncoder *encoder, + lzma_option &opt) +{ + /* Almost verbatim from LzmaAlone.cpp. */ + PROPID propIDs[] = + { + NCoderPropID::kDictionarySize, + NCoderPropID::kPosStateBits, + NCoderPropID::kLitContextBits, + NCoderPropID::kLitPosBits, + NCoderPropID::kAlgorithm, + NCoderPropID::kNumFastBytes, + NCoderPropID::kMatchFinder, + NCoderPropID::kEndMarker + }; + const int kNumProps = sizeof(propIDs) / sizeof(propIDs[0]); +#define VALUE(x) (advanced_options.x >= 0 ? advanced_options.x : opt.x) + PROPVARIANT properties[kNumProps]; + for (int p = 0; p < 6; p++) + properties[p].vt = VT_UI4; + properties[0].ulVal = UInt32(1 << VALUE (dictionary)); + properties[1].ulVal = UInt32(VALUE (pos_bits)); + properties[2].ulVal = UInt32(VALUE (literal_context_bits)); + properties[3].ulVal = UInt32(VALUE (literal_pos_bits)); + properties[4].ulVal = UInt32(VALUE (compression_mode)); + properties[5].ulVal = UInt32(VALUE (fast_bytes)); +#undef VALUE + + properties[6].vt = VT_BSTR; + properties[6].bstrVal = (BSTR)opt.match_finder; + + properties[7].vt = VT_BOOL; + properties[7].boolVal = stdinput ? VARIANT_TRUE : VARIANT_FALSE; + + if (encoder->SetCoderProperties(propIDs, properties, kNumProps) != S_OK) + throw Exception("SetCoderProperties() error"); +} + +void encode(NCompress::NLZMA::CEncoder *encoderSpec, + CMyComPtr<ISequentialInStream> inStream, + CMyComPtr<ISequentialOutStream> outStream, + lzma_option encoder_options, + UInt64 fileSize) +{ + set_encoder_properties(encoderSpec, encoder_options); + + encoderSpec->WriteCoderProperties(outStream); + + for (int i = 0; i < 8; i++) + { + Byte b = Byte(fileSize >> (8 * i)); + if (outStream->Write(&b, sizeof(b), 0) != S_OK) + throw Exception("Write error while encoding"); + } + + HRESULT result = encoderSpec->Code(inStream, outStream, 0, 0, 0); + + if (result == E_OUTOFMEMORY) + throw Exception("Cannot allocate memory"); + else if (result != S_OK) { + char buffer[33]; + snprintf(buffer, 33, "%d", (unsigned int)result); + throw Exception(string("Encoder error: ") + buffer); + } +} + +void decode(NCompress::NLZMA::CDecoder *decoderSpec, + CMyComPtr<ISequentialInStream> inStream, + CMyComPtr<ISequentialOutStream> outStream) +{ + const UInt32 kPropertiesSize = 5; + Byte properties[kPropertiesSize]; + UInt32 processedSize; + UInt64 fileSize = 0; + + if (inStream->Read(properties, kPropertiesSize, &processedSize) != S_OK) + throw Exception("Read error"); + if (processedSize != kPropertiesSize) + throw Exception("Read error"); + if (decoderSpec->SetDecoderProperties2(properties, kPropertiesSize) != S_OK) + throw Exception("SetDecoderProperties() error"); + + for (int i = 0; i < 8; i++) + { + Byte b; + + if (inStream->Read(&b, sizeof(b), &processedSize) != S_OK) + throw Exception("Read error"); + if (processedSize != 1) + throw Exception("Read error"); + + fileSize |= ((UInt64)b) << (8 * i); + } + + if (decoderSpec->Code(inStream, outStream, 0, &fileSize, 0) != S_OK) + throw Exception("Decoder error"); +} + +int open_instream(const string infile, + CMyComPtr<ISequentialInStream> &inStream, + UInt64 &fileSize) +{ + CInFileStream *inStreamSpec = new CInFileStream; + inStream = inStreamSpec; + if (!inStreamSpec->Open(infile.c_str())) + throw Exception("Cannot open input file " + infile); + + inStreamSpec->File.GetLength(fileSize); + + return inStreamSpec->File.GetHandle(); +} + +int open_outstream(const string outfile, + CMyComPtr<ISequentialOutStream> &outStream) +{ + COutFileStream *outStreamSpec = new COutFileStream; + outStream = outStreamSpec; + + bool open_by_force = (program_mode == PM_TEST) | force; + + if (!outStreamSpec->Create(outfile.c_str(), open_by_force)) + throw Exception("Cannot open output file " + outfile); + + return outStreamSpec->File.GetHandle(); +} + +double get_ratio(int inhandle, int outhandle) +{ + struct stat in_stats, out_stats; + fstat(inhandle, &in_stats); + fstat(outhandle, &out_stats); + + return (double)out_stats.st_size / (double)in_stats.st_size; +} + +mode_t get_file_mode(string filename) +{ + struct stat in_stat; + lstat(filename.c_str(), &in_stat); + + return in_stat.st_mode; +} + +bool string_ends_with(string str, string ending) +{ + return equal(ending.rbegin(), ending.rend(), str.rbegin()); +} + +bool extension_is_known(string filename) +{ + bool known_format = false; + extension_pair extension; int i = 1; + + extension = known_extensions[0]; + while (extension.from != NULL) { + if (string_ends_with(filename, extension.from)) { + known_format = true; + break; + } + extension = known_extensions[i]; + i++; + } + + if (!known_format) { + if (!string_ends_with(filename, suffix)) { + return false; + } + } + + return true; +} + +string replace_extension(string filename) +{ + int suffix_starts_at = filename.length() - strlen (suffix); + string from_suffix = filename.substr(suffix_starts_at, strlen (suffix)); + string ret = filename.substr(0, suffix_starts_at); + extension_pair extension; int i = 1; + + bool found_replacement = false; + extension = known_extensions[0]; + while (extension.from != NULL) { + if (from_suffix.compare(extension.from) == 0) { + ret += extension.to; + found_replacement = true; + break; + } + + extension = known_extensions[i]; + i++; + } + + return ret; +} + +string pretty_print_status(string filename, string output_filename, + string ratio) +{ + string ret = ""; + + ret += filename; + ret += ":\t "; + + if (program_mode == PM_TEST) { + ret += "decoded succesfully"; + + return ret; + } + + if (!stdinput && !stdoutput) { + ret += ratio; + ret += " -- "; + } + + if (program_mode == PM_COMPRESS) { + if (keep) { + ret += "encoded succesfully"; + + return ret; + } + + ret += "replaced with "; + ret += output_filename; + + return ret; + } + + if (program_mode == PM_DECOMPRESS) { + if (keep) { + ret += "decoded succesfully"; + + return ret; + } + + ret += "replaced with "; + ret += output_filename; + + return ret; + } + + return ret; +} + +static string archive_name; // I know, it is crude, but I haven't found any other + // way then making a global variable to transfer filename to handler + +void signal_handler (int signum) +{ + unlink (archive_name.c_str()); // deleting + signal (signum, SIG_DFL); // we return the default function to used signal + kill (getpid(), signum); // and then send this signal to the process again +} + +} // namespace lzma + + +int main(int argc, char **argv) +{ + using namespace lzma; + using std::cerr; + + stringVector filenames; + + signal (SIGTERM,signal_handler); + signal (SIGHUP,signal_handler); + signal (SIGINT,signal_handler); + + try { + parse_options(argc, argv, filenames); + } + catch (...) { + return STATUS_ERROR; + } + + if (program_mode == PM_HELP) { + print_help(argv[0]); + return STATUS_OK; + } + else if (program_mode == PM_LICENSE) { + print_license(); + return STATUS_OK; + } + else if (program_mode == PM_VERSION) { + print_version(); + return STATUS_OK; + } + + if (filenames.empty()) { + stdinput = true; + stdoutput = true; + + /* FIXME: get rid of this */ + filenames.push_back("-"); + } + + /* Protection: always create new files with 0600 in order to prevent + * outsiders from reading incomplete data. */ + umask(0077); + + bool warning = false; + + for (int i = 0; i < filenames.size(); i++) { + CMyComPtr<ISequentialInStream> inStream; + CMyComPtr<ISequentialOutStream> outStream; + UInt64 fileSize = 0; + int inhandle = 0, outhandle = 0; + string output_filename; + + if (stdinput) { + inStream = new CStdInFileStream; + MY_SET_BINARY_MODE(stdin); + fileSize = (UInt64)(Int64)-1; + + inhandle = STDIN_FILENO; + + outStream = new CStdOutFileStream; + MY_SET_BINARY_MODE(stdout); + + outhandle = STDOUT_FILENO; + } + else { + mode_t infile_mode = get_file_mode(filenames[i]); + if (!S_ISREG(infile_mode)) { + if (S_ISDIR(infile_mode)) { + warning = true; + cerr << argv[0] << ": " << filenames[i] << ": " + << "cowardly refusing to work on directory" + << endl; + + continue; + } + else if (S_ISLNK(infile_mode)) { + if (!stdoutput && !force) { + warning = true; + + cerr << argv[0] << ": " << filenames[i] << ": " + << "cowardly refusing to work on symbolic link " + << "(use --force to force encoding or decoding)" + << endl; + + continue; + } + } + else { + warning = true; + + cerr << argv[0] << ": " << filenames[i] << ": " + << "doesn't exist or is not a regular file" + << endl; + + continue; + } + } + + // Test if the file already ends with *suffix. + if (program_mode == PM_COMPRESS && !force + && string_ends_with(filenames[i], + suffix)) { + warning = true; + + cerr << filenames[i] << " already has " + << suffix << " suffix -- unchanged\n"; + + continue; + } + + // Test if the file extension is known. + if (program_mode == PM_DECOMPRESS + && !extension_is_known(filenames[i])) { + warning = true; + + cerr << filenames[i] << ": " + << " unknown suffix -- unchanged" + << endl; + + continue; + } + + try { + inhandle = open_instream(filenames[i], inStream, fileSize); + } + catch (Exception e) { + cerr << argv[0] << ": " << e.what() << endl; + return STATUS_ERROR; + } + + if (stdoutput) { + outStream = new CStdOutFileStream; + MY_SET_BINARY_MODE(stdout); + + outhandle = STDOUT_FILENO; + } + else { + /* Testing mode is nothing else but decoding + * and throwing away the result. */ + if (program_mode == PM_TEST) + output_filename = "/dev/null"; + else if (program_mode == PM_DECOMPRESS) + output_filename = replace_extension(filenames[i]); + else + output_filename = filenames[i] + + suffix; + archive_name = output_filename; + + try { + outhandle = open_outstream(output_filename, outStream); + } + catch (Exception e) { + cerr << argv[0] << ": " << e.what() << endl; + return STATUS_ERROR; + } + } + + } + + // Unless --force is specified, do not read/write compressed + // data from/to a terminal. + if (!force) { + if (program_mode == PM_COMPRESS && isatty(outhandle)) { + cerr << argv[0] << ": compressed data not " + "written to a terminal. Use " + "-f to force compression.\n" + << argv[0] << ": For help, type: " + << argv[0] << " -h\n"; + return STATUS_ERROR; + } else if (program_mode == PM_DECOMPRESS + && isatty(inhandle)) { + cerr << argv[0] << ": compressed data not " + "read from a terminal. Use " + "-f to force decompression.\n" + << argv[0] << ": For help, type: " + << argv[0] << " -h\n"; + return STATUS_ERROR; + } + } + + if (program_mode == PM_COMPRESS) { + NCompress::NLZMA::CEncoder *encoderSpec = + new NCompress::NLZMA::CEncoder; + + lzma_option options = option_mapping[compression_mode]; + + try { + encode(encoderSpec, inStream, outStream, options, fileSize); + } + catch (Exception e) { + cerr << argv[0] << ": " << e.what() << endl; + unlink(output_filename.c_str()); + delete(encoderSpec); + + return STATUS_ERROR; + } + + delete(encoderSpec); + } + else { // PM_DECOMPRESS | PM_TEST + NCompress::NLZMA::CDecoder *decoderSpec = + new NCompress::NLZMA::CDecoder; + + try { + decode(decoderSpec, inStream, outStream); + } + catch (Exception e) { + cerr << argv[0] << ": " << e.what() << endl; + unlink(output_filename.c_str()); + delete(decoderSpec); + + return STATUS_ERROR; + } + + delete(decoderSpec); + } + + /* Set permissions and owners. */ + if ( (program_mode == PM_COMPRESS || program_mode == PM_DECOMPRESS ) + && (!stdinput && !stdoutput) ) { + + int ret = 0; + struct stat file_stats; + ret = fstat(inhandle, &file_stats); + + ret = fchmod(outhandle, file_stats.st_mode); + ret = fchown(outhandle, file_stats.st_uid, file_stats.st_gid); + // We need to call fchmod() again, since otherwise the SUID bits + // are lost. + ret = fchmod(outhandle, file_stats.st_mode); + + struct timeval file_times[2]; + // Access time + file_times[0].tv_sec = file_stats.st_atime; + file_times[0].tv_usec = 0; + // Modification time + file_times[1].tv_sec = file_stats.st_mtime; + file_times[1].tv_usec = 0; + + ret = futimes(outhandle, file_times); + + if (!keep) + unlink(filenames[i].c_str()); + } + + if (verbosity > 0) { + if (stdoutput) { + cerr << filenames[i] << ":\t "; + cerr << "decoded succesfully" + << endl; + } + + else { + char buf[10] = { 0 }; + + if (program_mode == PM_DECOMPRESS) + snprintf(buf, 10, "%.2f%%", + (1 - get_ratio(outhandle, inhandle)) * 100); + if (program_mode == PM_COMPRESS) + snprintf(buf, 10, "%.2f%%", + (1 - get_ratio(inhandle, outhandle)) * 100); + + string ratio = buf; + cerr << pretty_print_status(filenames[i], output_filename, + ratio) + << endl; + } + } + } + + if (warning) + return STATUS_WARNING; + + return STATUS_OK; +} + |