diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 161 |
1 files changed, 65 insertions, 96 deletions
@@ -1,5 +1,5 @@ /* Lunzip - Decompressor for lzip files - Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz. + Copyright (C) 2010, 2011, 2012, 2013 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 @@ -58,12 +58,10 @@ #error "Environments where CHAR_BIT != 8 are not supported." #endif -long long int llabs( long long int number ); - const char * const Program_name = "Lunzip"; const char * const program_name = "lunzip"; -const char * const program_year = "2012"; +const char * const program_year = "2013"; const char * invocation_name = 0; #ifdef O_BINARY @@ -86,21 +84,7 @@ mode_t outfd_mode = S_IRUSR | S_IWUSR; bool delete_output_on_interrupt = false; -/* assure at least a minimum size for buffer 'buf' */ -static void * resize_buffer( void * buf, const int min_size ) - { - if( buf ) buf = realloc( buf, min_size ); - else buf = malloc( min_size ); - if( !buf ) - { - show_error( "Not enough memory.", 0, false ); - cleanup_and_fail( 1 ); - } - return buf; - } - - -static void show_help() +static void show_help( void ) { printf( "%s - Decompressor for lzip files.\n", Program_name ); printf( "\nUsage: %s [options] [files]\n", invocation_name ); @@ -122,7 +106,7 @@ static void show_help() } -static void show_version() +static void show_version( void ) { printf( "%s %s\n", Program_name, PROGVERSION ); printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year ); @@ -132,21 +116,35 @@ static void show_version() } -static const char * format_num( long long num ) +void show_header( const File_header header ) { const char * const prefix[8] = { "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi" }; - enum { buf_size = 16, factor = 1024 }; - static char buf[buf_size]; - const char *p = ""; + enum { factor = 1024 }; + const char * p = ""; + const char * np = " "; + unsigned num = Fh_get_dictionary_size( header ), i; bool exact = ( num % factor == 0 ); - int i; - for( i = 0; i < 8 && ( llabs( num ) > 9999 || - ( exact && llabs( num ) >= factor ) ); ++i ) - { num /= factor; if( num % factor != 0 ) exact = false; p = prefix[i]; } - snprintf( buf, buf_size, "%lld %s", num, p ); - return buf; + for( i = 0; i < 8 && ( num > 9999 || ( exact && num >= factor ) ); ++i ) + { num /= factor; if( num % factor != 0 ) exact = false; + p = prefix[i]; np = ""; } + fprintf( stderr, "version %d, dictionary size %s%4u %sB. ", + Fh_version( header ), np, num, p ); + } + + +static int extension_index( const char * const name ) + { + int i; + for( i = 0; known_extensions[i].from; ++i ) + { + const char * const ext = known_extensions[i].from; + if( strlen( name ) > strlen( ext ) && + strncmp( name + strlen( name ) - strlen( ext ), ext, strlen( ext ) ) == 0 ) + return i; + } + return -1; } @@ -183,23 +181,22 @@ static int open_instream( const char * const name, } -static int extension_index( const char * const name ) +/* assure at least a minimum size for buffer 'buf' */ +static void * resize_buffer( void * buf, const int min_size ) { - int i; - for( i = 0; known_extensions[i].from; ++i ) + if( buf ) buf = realloc( buf, min_size ); + else buf = malloc( min_size ); + if( !buf ) { - const char * const ext = known_extensions[i].from; - if( strlen( name ) > strlen( ext ) && - strncmp( name + strlen( name ) - strlen( ext ), ext, strlen( ext ) ) == 0 ) - return i; + show_error( "Not enough memory.", 0, false ); + cleanup_and_fail( 1 ); } - return -1; + return buf; } -static void set_d_outname( const char * const name ) +static void set_d_outname( const char * const name, const int i ) { - const int i = extension_index( name ); if( i >= 0 ) { const char * const from = known_extensions[i].from; @@ -286,9 +283,9 @@ static void close_and_set_permissions( const struct stat * const in_statsp ) static int decompress( const int infd, struct Pretty_print * const pp, const bool testing ) { - long long partial_file_pos = 0; + unsigned long long partial_file_pos = 0; struct Range_decoder rdec; - int retval = 0, result; + int retval = 0; bool first_member; if( !Rd_init( &rdec, infd ) ) { @@ -296,13 +293,14 @@ static int decompress( const int infd, struct Pretty_print * const pp, cleanup_and_fail( 1 ); } - for( first_member = true; ; first_member = false, Pp_reset( pp ) ) + for( first_member = true; ; first_member = false ) { + int result; File_header header; struct LZ_decoder decoder; Rd_reset_member_position( &rdec ); Rd_read_data( &rdec, header, Fh_size ); - if( Rd_finished( &rdec ) ) /* End Of File */ + if( Rd_finished( &rdec ) ) /* End Of File */ { if( first_member ) { Pp_show_msg( pp, "Error reading member header" ); retval = 1; } @@ -328,13 +326,7 @@ static int decompress( const int infd, struct Pretty_print * const pp, retval = 2; break; } if( verbosity >= 2 || ( verbosity == 1 && first_member ) ) - { - Pp_show_msg( pp, 0 ); - if( verbosity >= 2 ) - fprintf( stderr, "version %d, dictionary size %7sB. ", - Fh_version( header ), - format_num( Fh_get_dictionary_size( header ) ) ); - } + { Pp_show_msg( pp, 0 ); if( verbosity >= 2 ) show_header( header ); } if( !LZd_init( &decoder, header, &rdec, outfd ) ) { @@ -350,16 +342,16 @@ static int decompress( const int infd, struct Pretty_print * const pp, { Pp_show_msg( pp, 0 ); if( result == 2 ) - fprintf( stderr, "File ends unexpectedly at pos %lld\n", + fprintf( stderr, "File ends unexpectedly at pos %llu\n", partial_file_pos ); else - fprintf( stderr, "Decoder error at pos %lld\n", partial_file_pos ); + fprintf( stderr, "Decoder error at pos %llu\n", partial_file_pos ); } retval = 2; break; } if( verbosity >= 2 ) { if( testing ) fprintf( stderr, "ok\n" ); - else fprintf( stderr, "done\n" ); } + else fprintf( stderr, "done\n" ); Pp_reset( pp ); } } Rd_free( &rdec ); if( verbosity == 1 && retval == 0 ) @@ -371,13 +363,13 @@ static int decompress( const int infd, struct Pretty_print * const pp, void signal_handler( int sig ) { - sig = 0; /* keep compiler happy */ + if( sig ) {} /* keep compiler happy */ show_error( "Control-C or similar caught, quitting.", 0, false ); cleanup_and_fail( 1 ); } -static void set_signals() +static void set_signals( void ) { signal( SIGHUP, signal_handler ); signal( SIGINT, signal_handler ); @@ -388,7 +380,7 @@ static void set_signals() void Pp_init( struct Pretty_print * const pp, const char * const filenames[], const int num_filenames, const int v ) { - unsigned int stdin_name_len; + unsigned stdin_name_len; int i; pp->name = 0; pp->stdin_name = "(stdin)"; @@ -400,31 +392,13 @@ void Pp_init( struct Pretty_print * const pp, const char * const filenames[], for( i = 0; i < num_filenames; ++i ) { const char * const s = filenames[i]; - const int len = ( !strcmp( s, "-" ) ? stdin_name_len : strlen( s ) ); + const int len = ( (strcmp( s, "-" ) == 0) ? stdin_name_len : strlen( s ) ); if( len > pp->longest_name ) pp->longest_name = len; } if( pp->longest_name == 0 ) pp->longest_name = stdin_name_len; } -void Pp_show_msg( struct Pretty_print * const pp, const char * const msg ) - { - if( verbosity >= 0 ) - { - if( pp->first_post ) - { - int i, len; - pp->first_post = false; - fprintf( stderr, " %s: ", pp->name ); - len = pp->longest_name - strlen( pp->name ); - for( i = 0; i < len; ++i ) fprintf( stderr, " " ); - if( !msg ) fflush( stderr ); - } - if( msg ) fprintf( stderr, "%s.\n", msg ); - } - } - - void show_error( const char * const msg, const int errcode, const bool help ) { if( verbosity >= 0 ) @@ -435,7 +409,7 @@ void show_error( const char * const msg, const int errcode, const bool help ) if( errcode > 0 ) fprintf( stderr, ": %s", strerror( errcode ) ); fprintf( stderr, "\n" ); } - if( help && invocation_name && invocation_name[0] ) + if( help ) fprintf( stderr, "Try '%s --help' for more information.\n", invocation_name ); } @@ -495,7 +469,7 @@ int main( const int argc, const char * const argv[] ) { const int code = ap_code( &parser, argind ); const char * const arg = ap_argument( &parser, argind ); - if( !code ) break; /* no more options */ + if( !code ) break; /* no more options */ switch( code ) { case 'c': to_stdout = true; break; @@ -513,28 +487,23 @@ int main( const int argc, const char * const argv[] ) } /* end process options */ #if defined(__MSVCRT__) || defined(__OS2__) - _fsetmode( stdin, "b" ); - _fsetmode( stdout, "b" ); + setmode( STDIN_FILENO, O_BINARY ); + setmode( STDOUT_FILENO, O_BINARY ); #endif if( testing ) outfd = -1; - for( ; argind < ap_arguments( &parser ); ++argind ) - { - if( strcmp( ap_argument( &parser, argind ), "-" ) ) - filenames_given = true; - ++num_filenames; - filenames = resize_buffer( filenames, num_filenames * sizeof (char *) ); - filenames[num_filenames-1] = ap_argument( &parser, argind ); - } + num_filenames = max( 1, ap_arguments( &parser ) - argind ); + filenames = resize_buffer( filenames, num_filenames * sizeof filenames[0] ); + filenames[0] = "-"; - if( num_filenames == 0 ) + for( i = 0; argind + i < ap_arguments( &parser ); ++i ) { - ++num_filenames; - filenames = resize_buffer( filenames, sizeof (char *) ); - filenames[num_filenames-1] = "-"; + filenames[i] = ap_argument( &parser, argind + i ); + if( strcmp( filenames[i], "-" ) != 0 ) filenames_given = true; } + if( !to_stdout && !testing && ( filenames_given || default_output_filename[0] ) ) set_signals(); @@ -549,7 +518,7 @@ int main( const int argc, const char * const argv[] ) const struct stat * in_statsp; output_filename[0] = 0; - if( !filenames[i][0] || !strcmp( filenames[i], "-" ) ) + if( !filenames[i][0] || strcmp( filenames[i], "-" ) == 0 ) { input_filename = ""; infd = STDIN_FILENO; @@ -565,7 +534,7 @@ int main( const int argc, const char * const argv[] ) outfd_mode = all_rw; if( !open_outstream( force ) ) { - if( outfd == -1 && retval < 1 ) retval = 1; + if( retval < 1 ) retval = 1; close( infd ); infd = -1; continue; } @@ -582,11 +551,11 @@ int main( const int argc, const char * const argv[] ) if( to_stdout ) outfd = STDOUT_FILENO; else { - set_d_outname( input_filename ); + set_d_outname( input_filename, extension_index( input_filename ) ); outfd_mode = usr_rw; if( !open_outstream( force ) ) { - if( outfd == -1 && retval < 1 ) retval = 1; + if( retval < 1 ) retval = 1; close( infd ); infd = -1; continue; } |