diff options
Diffstat (limited to 'list.c')
| -rw-r--r-- | list.c | 123 |
1 files changed, 123 insertions, 0 deletions
@@ -0,0 +1,123 @@ +/* Lunzip - Decompressor for the lzip format + Copyright (C) 2010-2017 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 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, see <http://www.gnu.org/licenses/>. +*/ + +#define _FILE_OFFSET_BITS 64 + +#include <stdbool.h> +#include <stdio.h> +#include <string.h> +#include <stdint.h> +#include <unistd.h> +#include <sys/stat.h> + +#include "lzip.h" +#include "file_index.h" + + +static void list_line( const unsigned long long uncomp_size, + const unsigned long long comp_size, + const char * const input_filename ) + { + if( uncomp_size > 0 ) + printf( "%15llu %15llu %6.2f%% %s\n", uncomp_size, comp_size, + 100.0 * ( 1.0 - ( (double)comp_size / uncomp_size ) ), + input_filename ); + else + printf( "%15llu %15llu -INF%% %s\n", uncomp_size, comp_size, + input_filename ); + } + + +int list_files( const char * const filenames[], const int num_filenames, + const bool ignore_trailing ) + { + unsigned long long total_comp = 0, total_uncomp = 0; + int files = 0, retval = 0; + int i; + bool first_post = true; + bool stdin_used = false; + for( i = 0; i < num_filenames; ++i ) + { + const char * input_filename; + struct File_index file_index; + struct stat in_stats; /* not used */ + int infd; + const bool from_stdin = ( strcmp( filenames[i], "-" ) == 0 ); + if( from_stdin ) { if( stdin_used ) continue; else stdin_used = true; } + input_filename = from_stdin ? "(stdin)" : filenames[i]; + infd = from_stdin ? STDIN_FILENO : + open_instream( input_filename, &in_stats, true, true ); + if( infd < 0 ) { if( retval < 1 ) retval = 1; continue; } + + Fi_init( &file_index, infd, ignore_trailing ); + close( infd ); + if( file_index.retval != 0 ) + { + show_file_error( input_filename, file_index.error, 0 ); + if( retval < file_index.retval ) retval = file_index.retval; + Fi_free( &file_index ); continue; + } + if( verbosity >= 0 ) + { + const unsigned long long udata_size = Fi_udata_size( &file_index ); + const unsigned long long cdata_size = Fi_cdata_size( &file_index ); + total_comp += cdata_size; total_uncomp += udata_size; ++files; + if( first_post ) + { + first_post = false; + if( verbosity >= 1 ) fputs( " dict memb trail ", stdout ); + fputs( " uncompressed compressed saved name\n", stdout ); + } + if( verbosity >= 1 ) + { + long long trailing_size; + unsigned dictionary_size = 0; + long i; + for( i = 0; i < file_index.members; ++i ) + dictionary_size = + max( dictionary_size, Fi_dictionary_size( &file_index, i ) ); + trailing_size = Fi_file_size( &file_index ) - cdata_size; + printf( "%s %5ld %6lld ", format_ds( dictionary_size ), + file_index.members, trailing_size ); + } + list_line( udata_size, cdata_size, input_filename ); + + if( verbosity >= 2 && file_index.members > 1 ) + { + long i; + fputs( " member data_pos data_size member_pos member_size\n", stdout ); + for( i = 0; i < file_index.members; ++i ) + { + const struct Block * db = Fi_dblock( &file_index, i ); + const struct Block * mb = Fi_mblock( &file_index, i ); + printf( "%5ld %15llu %15llu %15llu %15llu\n", + i + 1, db->pos, db->size, mb->pos, mb->size ); + } + first_post = true; /* reprint heading after list of members */ + } + fflush( stdout ); + } + Fi_free( &file_index ); + } + if( verbosity >= 0 && files > 1 ) + { + if( verbosity >= 1 ) fputs( " ", stdout ); + list_line( total_uncomp, total_comp, "(totals)" ); + fflush( stdout ); + } + return retval; + } |