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authorDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 07:22:08 +0000
committerDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 07:22:08 +0000
commitce537b6151b2105c25d979bf40f445051754b798 (patch)
treebb514ec997e349d51d1565d98e79297407c1339a /main.cc
parentInitial commit. (diff)
downloadlzip-ce537b6151b2105c25d979bf40f445051754b798.tar.xz
lzip-ce537b6151b2105c25d979bf40f445051754b798.zip
Adding upstream version 1.6~pre1.upstream/1.6_pre1
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to '')
-rw-r--r--main.cc831
1 files changed, 831 insertions, 0 deletions
diff --git a/main.cc b/main.cc
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index 0000000..fa91d9d
--- /dev/null
+++ b/main.cc
@@ -0,0 +1,831 @@
+/* Lzip - A data compressor based on the LZMA algorithm
+ Copyright (C) 2008, 2009 Antonio Diaz Diaz.
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+/*
+ Return values: 0 for a normal exit, 1 for environmental problems
+ (file not found, invalid flags, I/O errors, etc), 2 to indicate a
+ corrupt or invalid input file, 3 for an internal consistency error
+ (eg, bug) which caused lzip to panic.
+*/
+
+#define _FILE_OFFSET_BITS 64
+
+#include <algorithm>
+#include <cerrno>
+#include <climits>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <string>
+#include <vector>
+#include <fcntl.h>
+#include <stdint.h>
+#include <signal.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#include "arg_parser.h"
+#include "lzip.h"
+#include "decoder.h"
+#include "encoder.h"
+
+#ifndef LLONG_MAX
+#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
+#endif
+#ifndef LLONG_MIN
+#define LLONG_MIN (-LLONG_MAX - 1LL)
+#endif
+#ifndef ULLONG_MAX
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
+#endif
+
+
+namespace {
+
+const char * invocation_name = 0;
+const char * const Program_name = "Lzip";
+const char * const program_name = "lzip";
+const char * const program_year = "2009";
+
+struct { const char * from; const char * to; } const known_extensions[] = {
+ { ".lz", "" },
+ { ".tlz", ".tar" },
+ { 0, 0 } };
+
+struct lzma_options
+ {
+ int dictionary_size; // 4KiB..512MiB
+ int match_len_limit; // 5..273
+ };
+
+enum Mode { m_compress = 0, m_decompress, m_test };
+
+std::string output_filename;
+int outhandle = -1;
+bool delete_output_on_interrupt = false;
+
+
+void show_help() throw()
+ {
+ std::printf( "%s - A data compressor based on the LZMA algorithm.\n", Program_name );
+ std::printf( "\nUsage: %s [options] [files]\n", invocation_name );
+ std::printf( "Options:\n" );
+ std::printf( " -h, --help display this help and exit\n" );
+ std::printf( " -V, --version output version information and exit\n" );
+ std::printf( " -b, --member-size=<n> set member size limit in bytes\n" );
+ std::printf( " -c, --stdout send output to standard output\n" );
+ std::printf( " -d, --decompress decompress\n" );
+ std::printf( " -f, --force overwrite existing output files\n" );
+ std::printf( " -k, --keep keep (don't delete) input files\n" );
+ std::printf( " -m, --match-length=<n> set match length limit in bytes [80]\n" );
+ std::printf( " -o, --output=<file> if reading stdin, place the output into <file>\n" );
+ std::printf( " -q, --quiet suppress all messages\n" );
+ std::printf( " -s, --dictionary-size=<n> set dictionary size limit in bytes [8MiB]\n" );
+ std::printf( " -S, --volume-size=<n> set volume size limit in bytes\n" );
+ std::printf( " -t, --test test compressed file integrity\n" );
+ std::printf( " -v, --verbose be verbose (a 2nd -v gives more)\n" );
+ std::printf( " -1 .. -9 set compression level [default 6]\n" );
+ std::printf( " --fast alias for -1\n" );
+ std::printf( " --best alias for -9\n" );
+ std::printf( "If no file names are given, lzip compresses or decompresses\n" );
+ std::printf( "from standard input to standard output.\n" );
+ std::printf( "Numbers may be followed by a multiplier: k = kB = 10^3 = 1000,\n" );
+ std::printf( "Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...\n" );
+ std::printf( "\nReport bugs to lzip-bug@nongnu.org\n" );
+ std::printf( "Lzip home page: http://www.nongnu.org/lzip/lzip.html\n" );
+ }
+
+
+void show_version() throw()
+ {
+ std::printf( "%s %s\n", Program_name, PROGVERSION );
+ std::printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year );
+ std::printf( "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n" );
+ std::printf( "This is free software: you are free to change and redistribute it.\n" );
+ std::printf( "There is NO WARRANTY, to the extent permitted by law.\n" );
+ }
+
+
+const char * format_num( long long num, long long limit = 9999,
+ const int set_prefix = 0 ) throw()
+ {
+ const char * const si_prefix[8] =
+ { "k", "M", "G", "T", "P", "E", "Z", "Y" };
+ const char * const binary_prefix[8] =
+ { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" };
+ static bool si = false;
+ static char buf[16];
+
+ if( set_prefix ) si = ( set_prefix > 0 );
+ const int factor = ( si ) ? 1000 : 1024;
+ const char * const *prefix = ( si ) ? si_prefix : binary_prefix;
+ const char *p = "";
+ limit = std::max( 999LL, std::min( 999999LL, limit ) );
+
+ for( int i = 0; i < 8 && ( llabs( num ) > limit ||
+ ( llabs( num ) >= factor && num % factor == 0 ) ); ++i )
+ { num /= factor; p = prefix[i]; }
+ snprintf( buf, sizeof buf, "%lld %s", num, p );
+ return buf;
+ }
+
+
+long long getnum( const char * ptr, const int bs,
+ const long long llimit = LLONG_MIN + 1,
+ const long long ulimit = LLONG_MAX ) throw()
+ {
+ errno = 0;
+ char *tail;
+ long long result = strtoll( ptr, &tail, 0 );
+ if( tail == ptr )
+ {
+ show_error( "bad or missing numerical argument", 0, true );
+ std::exit( 1 );
+ }
+
+ if( !errno && tail[0] )
+ {
+ int factor = ( tail[1] == 'i' ) ? 1024 : 1000;
+ int exponent = 0;
+ bool bad_multiplier = false;
+ switch( tail[0] )
+ {
+ case ' ': break;
+ case 'b': if( bs > 0 ) { factor = bs; exponent = 1; }
+ else bad_multiplier = true;
+ break;
+ case 'Y': exponent = 8; break;
+ case 'Z': exponent = 7; break;
+ case 'E': exponent = 6; break;
+ case 'P': exponent = 5; break;
+ case 'T': exponent = 4; break;
+ case 'G': exponent = 3; break;
+ case 'M': exponent = 2; break;
+ case 'K': if( factor == 1024 ) exponent = 1; else bad_multiplier = true;
+ break;
+ case 'k': if( factor == 1000 ) exponent = 1; else bad_multiplier = true;
+ break;
+ default: bad_multiplier = true;
+ }
+ if( bad_multiplier )
+ {
+ show_error( "bad multiplier in numerical argument", 0, true );
+ std::exit( 1 );
+ }
+ for( int i = 0; i < exponent; ++i )
+ {
+ if( LLONG_MAX / factor >= llabs( result ) ) result *= factor;
+ else { errno = ERANGE; break; }
+ }
+ }
+ if( !errno && ( result < llimit || result > ulimit ) ) errno = ERANGE;
+ if( errno )
+ {
+ show_error( "numerical argument out of limits" );
+ std::exit( 1 );
+ }
+ return result;
+ }
+
+
+int get_dict_size( const char * arg ) throw()
+ {
+ char *tail;
+ int bits = std::strtol( arg, &tail, 0 );
+ if( bits >= min_dictionary_bits && bits <= max_dictionary_bits && *tail == 0 )
+ return ( 1 << bits );
+ return getnum( arg, 0, min_dictionary_size, max_dictionary_size );
+ }
+
+
+int extension_index( const std::string & name ) throw()
+ {
+ for( int i = 0; known_extensions[i].from; ++i )
+ {
+ const std::string ext( known_extensions[i].from );
+ if( name.size() > ext.size() &&
+ name.compare( name.size() - ext.size(), ext.size(), ext ) == 0 )
+ return i;
+ }
+ return -1;
+ }
+
+
+int open_instream( const std::string & name, struct stat * in_statsp,
+ const Mode program_mode, const int eindex,
+ const bool force, const bool to_stdout ) throw()
+ {
+ int inhandle = -1;
+ if( program_mode == m_compress && !force && eindex >= 0 )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: input file `%s' already has `%s' suffix.\n",
+ program_name, name.c_str(),
+ known_extensions[eindex].from );
+ }
+ else
+ {
+ inhandle = open( name.c_str(), O_RDONLY );
+ if( inhandle < 0 )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: Can't open input file `%s': %s.\n",
+ program_name, name.c_str(), std::strerror( errno ) );
+ }
+ else
+ {
+ const int i = fstat( inhandle, in_statsp );
+ const mode_t & mode = in_statsp->st_mode;
+ if( i < 0 || !( S_ISREG( mode ) || ( to_stdout &&
+ ( S_ISFIFO( mode ) || S_ISSOCK( mode ) ||
+ S_ISBLK( mode ) || S_ISCHR( mode ) ) ) ) )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: input file `%s' is not a regular file%s.\n",
+ program_name, name.c_str(),
+ to_stdout ? "" : " and `--stdout' was not specified" );
+ close( inhandle );
+ inhandle = -1;
+ }
+ }
+ }
+ return inhandle;
+ }
+
+
+void set_c_outname( const std::string & name, const bool multifile ) throw()
+ {
+ output_filename = name;
+ if( multifile ) output_filename += "00001";
+ output_filename += known_extensions[0].from;
+ }
+
+
+void set_d_outname( const std::string & name, const int i ) throw()
+ {
+ if( i >= 0 )
+ {
+ const std::string from( known_extensions[i].from );
+ if( name.size() > from.size() )
+ {
+ output_filename.assign( name, 0, name.size() - from.size() );
+ output_filename += known_extensions[i].to;
+ return;
+ }
+ }
+ output_filename = name; output_filename += ".out";
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: can't guess original name for `%s' -- using `%s'.\n",
+ program_name, name.c_str(), output_filename.c_str() );
+ }
+
+
+bool open_outstream( const bool force ) throw()
+ {
+ if( force )
+ outhandle = open( output_filename.c_str(), O_CREAT | O_TRUNC | O_WRONLY,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
+ else outhandle = open( output_filename.c_str(), O_CREAT | O_EXCL | O_WRONLY,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH );
+ if( outhandle < 0 )
+ {
+ if( errno == EEXIST ) outhandle = -2; else outhandle = -1;
+ if( verbosity >= 0 )
+ {
+ if( outhandle == -2 )
+ std::fprintf( stderr, "%s: Output file %s already exists, skipping.\n",
+ program_name, output_filename.c_str() );
+ else
+ std::fprintf( stderr, "%s: Can't create output file `%s': %s.\n",
+ program_name, output_filename.c_str(), std::strerror( errno ) );
+ }
+ }
+ return ( outhandle >= 0 );
+ }
+
+
+bool check_tty( const int inhandle, const Mode program_mode ) throw()
+ {
+ if( program_mode == m_compress && isatty( outhandle ) )
+ {
+ show_error( "I won't write compressed data to a terminal.", 0, true );
+ return false;
+ }
+ if( ( program_mode == m_decompress || program_mode == m_test ) &&
+ isatty( inhandle ) )
+ {
+ show_error( "I won't read compressed data from a terminal.", 0, true );
+ return false;
+ }
+ return true;
+ }
+
+
+void cleanup_and_fail( const int retval ) throw()
+ {
+ if( delete_output_on_interrupt )
+ {
+ if( verbosity >= 0 )
+ std::fprintf( stderr, "%s: Deleting output file `%s', if it exists.\n",
+ program_name, output_filename.c_str() );
+ if( outhandle >= 0 ) { close( outhandle ); outhandle = -1; }
+ if( std::remove( output_filename.c_str() ) != 0 )
+ show_error( "WARNING: deletion of output file (apparently) failed." );
+ }
+ std::exit( retval );
+ }
+
+
+ // Set permissions, owner and times.
+void close_and_set_permissions( const struct stat * in_statsp, int * retvalp )
+ {
+ int tmp = 0;
+ if( in_statsp )
+ {
+ if( fchmod( outhandle, in_statsp->st_mode ) != 0 ) tmp = 1;
+ if( !tmp ) (void)fchown( outhandle, in_statsp->st_uid, in_statsp->st_gid );
+ // fchown will in many cases return with EPERM, which can be safely ignored.
+ }
+ if( close( outhandle ) == 0 ) outhandle = -1;
+ else cleanup_and_fail( 1 );
+ delete_output_on_interrupt = false;
+ if( !in_statsp ) return;
+ if( !tmp )
+ {
+ struct utimbuf t;
+ t.actime = in_statsp->st_atime;
+ t.modtime = in_statsp->st_mtime;
+ tmp = utime( output_filename.c_str(), &t );
+ }
+ if( tmp )
+ {
+ if( tmp > *retvalp ) *retvalp = tmp;
+ show_error( "I can't change output file attributes." );
+ cleanup_and_fail( *retvalp );
+ }
+ }
+
+
+bool next_filename()
+ {
+ const unsigned int len = std::strlen( known_extensions[0].from );
+ if( output_filename.size() >= len + 5 ) // "*00001.lz"
+ for( int i = output_filename.size() - len - 1, j = 0; j < 5; --i, ++j )
+ {
+ if( output_filename[i] < '9' ) { ++output_filename[i]; return true; }
+ else output_filename[i] = '0';
+ }
+ return false;
+ }
+
+
+int compress( const long long member_size, const long long volume_size,
+ lzma_options encoder_options, const int inhandle,
+ const Pretty_print & pp, const struct stat * in_statsp,
+ int * retvalp )
+ {
+ if( verbosity >= 1 ) pp();
+ File_header header;
+ header.set_magic();
+ if( !header.dictionary_size( encoder_options.dictionary_size ) ||
+ encoder_options.match_len_limit < 5 ||
+ encoder_options.match_len_limit > max_match_len )
+ internal_error( "invalid argument to encoder" );
+
+ try {
+ Matchfinder matchfinder( header.dictionary_size(),
+ encoder_options.match_len_limit, inhandle );
+ header.dictionary_size( matchfinder.dictionary_size() );
+
+ long long in_size = 0, out_size = 0, partial_volume_size = 0;
+ while( true )
+ {
+ LZ_encoder encoder( matchfinder, header, outhandle );
+ const long long size =
+ std::min( member_size, volume_size - partial_volume_size );
+ if( !encoder.encode_member( size ) )
+ { pp(); show_error( "read error", errno ); return 1; }
+ in_size += matchfinder.data_position();
+ out_size += encoder.member_position();
+ if( matchfinder.finished() ) break;
+ partial_volume_size += encoder.member_position();
+ if( partial_volume_size >= volume_size - min_dictionary_size )
+ {
+ partial_volume_size = 0;
+ if( delete_output_on_interrupt )
+ {
+ close_and_set_permissions( in_statsp, retvalp );
+ if( !next_filename() )
+ { pp(); show_error( "too many volume files" ); return 1; }
+ if( !open_outstream( true ) ) return 1;
+ delete_output_on_interrupt = true;
+ }
+ }
+ if( !matchfinder.reset() )
+ { pp(); show_error( "read error", errno ); return 1; }
+ }
+
+ if( verbosity >= 1 )
+ {
+ if( in_size <= 0 || out_size <= 0 )
+ std::fprintf( stderr, "no data compressed.\n" );
+ else
+ std::fprintf( stderr, "%6.3f:1, %6.3f bits/byte, "
+ "%5.2f%% saved, %lld in, %lld out.\n",
+ (double)in_size / out_size,
+ ( 8.0 * out_size ) / in_size,
+ 100.0 * ( 1.0 - ( (double)out_size / in_size ) ),
+ in_size, out_size );
+ }
+ }
+ catch( std::bad_alloc )
+ {
+ pp( "not enough memory. Try a smaller dictionary size" );
+ return 1;
+ }
+ catch( Error e ) { pp(); show_error( e.s, errno ); return 1; }
+ return 0;
+ }
+
+
+int decompress( const int inhandle, const Pretty_print & pp,
+ const bool testing )
+ {
+ try {
+ Input_buffer ibuf( inhandle );
+ long long partial_file_pos = 0;
+ for( bool first_pass = true; ; first_pass = false, pp.reset() )
+ {
+ File_header header;
+ for( unsigned int i = 0; i < sizeof header; ++i )
+ ((uint8_t *)&header)[i] = ibuf.read_byte();
+ if( ibuf.finished() )
+ {
+ if( first_pass ) { pp( "error reading member header" ); return 1; }
+ else break;
+ }
+ if( !header.verify_magic() )
+ {
+ if( !first_pass ) break;
+ if( verbosity >= 0 )
+ { pp();
+ std::fprintf( stderr, "bad magic number (file not created by %s).\n",
+ program_name ); }
+ return 2;
+ }
+ if( !header.verify_version() )
+ {
+ if( verbosity >= 0 )
+ { pp();
+ std::fprintf( stderr, "version %d member format not supported, newer %s needed.\n",
+ header.version, program_name ); }
+ return 2;
+ }
+ if( header.dictionary_size() < min_dictionary_size ||
+ header.dictionary_size() > max_dictionary_size )
+ { pp( "invalid dictionary size in member header" ); return 2; }
+
+ if( verbosity >= 1 )
+ {
+ pp();
+ if( verbosity >= 2 )
+ std::fprintf( stderr, "version %d, dictionary size %7sB. ",
+ header.version,
+ format_num( header.dictionary_size() ) );
+ }
+ LZ_decoder decoder( header, ibuf, outhandle );
+
+ const int result = decoder.decode_member( pp );
+ partial_file_pos += decoder.member_position();
+ if( result != 0 )
+ {
+ if( verbosity >= 0 && result <= 2 )
+ {
+ pp();
+ if( result == 2 )
+ std::fprintf( stderr, "file ends unexpectedly at pos %lld\n",
+ partial_file_pos );
+ else
+ std::fprintf( stderr, "decoder error at pos %lld\n",
+ partial_file_pos );
+ }
+ return 2;
+ }
+ if( verbosity >= 1 )
+ { if( testing ) std::fprintf( stderr, "ok\n" );
+ else std::fprintf( stderr, "done\n" ); }
+ }
+ }
+ catch( std::bad_alloc )
+ {
+ pp( "not enough memory. Find a machine with more memory" );
+ return 1;
+ }
+ catch( Error e ) { pp(); show_error( e.s, errno ); return 1; }
+ return 0;
+ }
+
+
+void signal_handler( const int ) throw()
+ {
+ show_error( "Control-C or similar caught, quitting." );
+ cleanup_and_fail( 0 );
+ }
+
+
+void set_signals() throw()
+ {
+ signal( SIGTERM, signal_handler );
+ signal( SIGHUP, signal_handler );
+ signal( SIGINT, signal_handler );
+ }
+
+} // end namespace
+
+
+int verbosity = 0;
+
+
+void Pretty_print::operator()( const char * const msg ) const throw()
+ {
+ if( verbosity >= 0 )
+ {
+ if( first_post )
+ {
+ first_post = false;
+ std::fprintf( stderr, " %s: ", name_.c_str() );
+ for( unsigned int i = 0; i < longest_name - name_.size(); ++i )
+ std::fprintf( stderr, " " );
+ if( !msg ) std::fflush( stderr );
+ }
+ if( msg ) std::fprintf( stderr, "%s.\n", msg );
+ }
+ }
+
+
+void show_error( const char * msg, const int errcode, const bool help ) throw()
+ {
+ if( verbosity >= 0 )
+ {
+ if( msg && msg[0] != 0 )
+ {
+ std::fprintf( stderr, "%s: %s", program_name, msg );
+ if( errcode > 0 ) std::fprintf( stderr, ": %s", std::strerror( errcode ) );
+ std::fprintf( stderr, "\n" );
+ }
+ if( help && invocation_name && invocation_name[0] != 0 )
+ std::fprintf( stderr, "Try `%s --help' for more information.\n", invocation_name );
+ }
+ }
+
+
+void internal_error( const char * msg )
+ {
+ std::string s( "internal error: " ); s += msg;
+ show_error( s.c_str() );
+ std::exit( 3 );
+ }
+
+
+// Returns the number of bytes really read.
+// If (returned value < size) and (errno == 0), means EOF was reached.
+//
+int readblock( const int fd, char * buf, const int size ) throw()
+ {
+ int rest = size;
+ errno = 0;
+ while( rest > 0 )
+ {
+ errno = 0;
+ const int n = read( fd, buf + size - rest, rest );
+ if( n > 0 ) rest -= n;
+ else if( n == 0 ) break;
+ else if( errno != EINTR && errno != EAGAIN ) break;
+ }
+ return ( rest > 0 ) ? size - rest : size;
+ }
+
+
+// Returns the number of bytes really written.
+// If (returned value < size), it is always an error.
+//
+int writeblock( const int fd, const char * buf, const int size ) throw()
+ {
+ int rest = size;
+ errno = 0;
+ while( rest > 0 )
+ {
+ errno = 0;
+ const int n = write( fd, buf + size - rest, rest );
+ if( n > 0 ) rest -= n;
+ else if( errno && errno != EINTR && errno != EAGAIN ) break;
+ }
+ return ( rest > 0 ) ? size - rest : size;
+ }
+
+
+int main( const int argc, const char * argv[] )
+ {
+ // Mapping from gzip/bzip2 style 1..9 compression modes
+ // to the corresponding LZMA compression modes.
+ const lzma_options option_mapping[] =
+ {
+ { 1 << 22, 10 }, // -1
+ { 1 << 22, 12 }, // -2
+ { 1 << 22, 17 }, // -3
+ { 1 << 22, 26 }, // -4
+ { 1 << 22, 44 }, // -5
+ { 1 << 23, 80 }, // -6
+ { 1 << 24, 108 }, // -7
+ { 1 << 24, 163 }, // -8
+ { 1 << 25, 273 } }; // -9
+ lzma_options encoder_options = option_mapping[5]; // default = "-6"
+ long long member_size = LLONG_MAX;
+ long long volume_size = LLONG_MAX;
+ int inhandle = -1;
+ Mode program_mode = m_compress;
+ bool force = false;
+ bool keep_input_files = false;
+ bool to_stdout = false;
+ std::string input_filename;
+ std::string default_output_filename;
+ std::vector< std::string > filenames;
+ invocation_name = argv[0];
+
+ const Arg_parser::Option options[] =
+ {
+ { '1', "fast", Arg_parser::no },
+ { '2', 0, Arg_parser::no },
+ { '3', 0, Arg_parser::no },
+ { '4', 0, Arg_parser::no },
+ { '5', 0, Arg_parser::no },
+ { '6', 0, Arg_parser::no },
+ { '7', 0, Arg_parser::no },
+ { '8', 0, Arg_parser::no },
+ { '9', "best", Arg_parser::no },
+ { 'b', "member-size", Arg_parser::yes },
+ { 'c', "stdout", Arg_parser::no },
+ { 'd', "decompress", Arg_parser::no },
+ { 'f', "force", Arg_parser::no },
+ { 'h', "help", Arg_parser::no },
+ { 'k', "keep", Arg_parser::no },
+ { 'm', "match-length", Arg_parser::yes },
+ { 'o', "output", Arg_parser::yes },
+ { 'q', "quiet", Arg_parser::no },
+ { 's', "dictionary-size", Arg_parser::yes },
+ { 'S', "volume-size", Arg_parser::yes },
+ { 't', "test", Arg_parser::no },
+ { 'v', "verbose", Arg_parser::no },
+ { 'V', "version", Arg_parser::no },
+ { 0 , 0, Arg_parser::no } };
+
+ Arg_parser parser( argc, argv, options );
+ if( parser.error().size() ) // bad option
+ { show_error( parser.error().c_str(), 0, true ); return 1; }
+
+ int argind = 0;
+ for( ; argind < parser.arguments(); ++argind )
+ {
+ const int code = parser.code( argind );
+ if( !code ) break; // no more options
+ const char * arg = parser.argument( argind ).c_str();
+ switch( code )
+ {
+ case '1': case '2': case '3':
+ case '4': case '5': case '6':
+ case '7': case '8': case '9':
+ encoder_options = option_mapping[code-'1']; break;
+ case 'b': member_size = getnum( arg, 0, 100000, LLONG_MAX / 2 ); break;
+ case 'c': to_stdout = true; break;
+ case 'd': program_mode = m_decompress; break;
+ case 'f': force = true; break;
+ case 'h': show_help(); return 0;
+ case 'k': keep_input_files = true; break;
+ case 'm': encoder_options.match_len_limit =
+ getnum( arg, 0, 5, max_match_len ); break;
+ case 'o': default_output_filename = arg; break;
+ case 'q': verbosity = -1; break;
+ case 's': encoder_options.dictionary_size = get_dict_size( arg );
+ break;
+ case 'S': volume_size = getnum( arg, 0, 100000, LLONG_MAX / 2 ); break;
+ case 't': program_mode = m_test; break;
+ case 'v': if( verbosity < 4 ) ++verbosity; break;
+ case 'V': show_version(); return 0;
+ default : internal_error( "uncaught option" );
+ }
+ }
+
+ bool filenames_given = false;
+ for( ; argind < parser.arguments(); ++argind )
+ {
+ if( parser.argument( argind ) != "-" ) filenames_given = true;
+ filenames.push_back( parser.argument( argind ) );
+ }
+
+ if( filenames.empty() ) filenames.push_back("-");
+ if( filenames_given ) set_signals();
+
+ Pretty_print pp( filenames );
+ if( program_mode == m_compress )
+ {
+ dis_slots.init();
+ prob_prices.init();
+ }
+ else if( program_mode == m_test )
+ outhandle = -1;
+
+ int retval = 0;
+ for( unsigned int i = 0; i < filenames.size(); ++i )
+ {
+ struct stat in_stats;
+ output_filename.clear();
+
+ if( !filenames[i].size() || filenames[i] == "-" )
+ {
+ input_filename.clear();
+ inhandle = STDIN_FILENO;
+ if( program_mode != m_test )
+ {
+ if( to_stdout || !default_output_filename.size() )
+ outhandle = STDOUT_FILENO;
+ else
+ {
+ if( program_mode == m_compress )
+ set_c_outname( default_output_filename, volume_size != LLONG_MAX );
+ else output_filename = default_output_filename;
+ if( !open_outstream( force ) )
+ {
+ if( outhandle == -1 && retval < 1 ) retval = 1;
+ close( inhandle ); inhandle = -1;
+ continue;
+ }
+ }
+ }
+ }
+ else
+ {
+ input_filename = filenames[i];
+ const int eindex = extension_index( input_filename );
+ inhandle = open_instream( input_filename, &in_stats, program_mode,
+ eindex, force, to_stdout );
+ if( inhandle < 0 ) continue;
+ if( program_mode != m_test )
+ {
+ if( to_stdout ) outhandle = STDOUT_FILENO;
+ else
+ {
+ if( program_mode == m_compress )
+ set_c_outname( input_filename, volume_size != LLONG_MAX );
+ else set_d_outname( input_filename, eindex );
+ if( !open_outstream( force ) )
+ {
+ if( outhandle == -1 && retval < 1 ) retval = 1;
+ close( inhandle ); inhandle = -1;
+ continue;
+ }
+ }
+ }
+ }
+
+ if( !check_tty( inhandle, program_mode ) ) return 1;
+
+ if( output_filename.size() && !to_stdout && program_mode != m_test )
+ delete_output_on_interrupt = true;
+ const struct stat * in_statsp = input_filename.size() ? &in_stats : 0;
+ pp.set_name( input_filename );
+ int tmp = 0;
+ if( program_mode == m_compress )
+ tmp = compress( member_size, volume_size, encoder_options, inhandle,
+ pp, in_statsp, &retval );
+ else
+ tmp = decompress( inhandle, pp, program_mode == m_test );
+ if( tmp > retval ) retval = tmp;
+ if( tmp && program_mode != m_test ) cleanup_and_fail( retval );
+
+ if( delete_output_on_interrupt )
+ close_and_set_permissions( in_statsp, &retval );
+ if( input_filename.size() )
+ {
+ close( inhandle ); inhandle = -1;
+ if( !keep_input_files && !to_stdout && program_mode != m_test )
+ std::remove( input_filename.c_str() );
+ }
+ }
+ if( outhandle >= 0 ) close( outhandle );
+ return retval;
+ }