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/* Lunzip - Decompressor for the lzip format
Copyright (C) 2010-2022 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 <stdint.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "lzip.h"
#include "lzip_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( "%14llu %14llu %6.2f%% %s\n", uncomp_size, comp_size,
100.0 - ( ( 100.0 * comp_size ) / uncomp_size ),
input_filename );
else
printf( "%14llu %14llu -INF%% %s\n", uncomp_size, comp_size,
input_filename );
}
int list_files( const char * const filenames[], const int num_filenames,
const bool ignore_trailing, const bool loose_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 bool from_stdin = ( strcmp( filenames[i], "-" ) == 0 );
if( from_stdin ) { if( stdin_used ) continue; else stdin_used = true; }
const char * const input_filename = from_stdin ? "(stdin)" : filenames[i];
struct stat in_stats; /* not used */
const int infd = from_stdin ? STDIN_FILENO :
open_instream( input_filename, &in_stats, false, true );
if( infd < 0 ) { set_retval( &retval, 1 ); continue; }
struct Lzip_index lzip_index;
Li_init( &lzip_index, infd, ignore_trailing, loose_trailing );
close( infd );
if( lzip_index.retval != 0 )
{
show_file_error( input_filename, lzip_index.error, 0 );
set_retval( &retval, lzip_index.retval );
Li_free( &lzip_index ); continue;
}
if( verbosity < 0 ) { Li_free( &lzip_index ); continue; }
const unsigned long long udata_size = Li_udata_size( &lzip_index );
const unsigned long long cdata_size = Li_cdata_size( &lzip_index );
total_comp += cdata_size; total_uncomp += udata_size; ++files;
const long members = lzip_index.members;
if( first_post )
{
first_post = false;
if( verbosity >= 1 ) fputs( " dict memb trail ", stdout );
fputs( " uncompressed compressed saved name\n", stdout );
}
if( verbosity >= 1 )
printf( "%s %5ld %6lld ", format_ds( lzip_index.dictionary_size ),
members, Li_file_size( &lzip_index ) - cdata_size );
list_line( udata_size, cdata_size, input_filename );
if( verbosity >= 2 && members > 1 )
{
long i;
fputs( " member data_pos data_size member_pos member_size\n", stdout );
for( i = 0; i < members; ++i )
{
const struct Block * db = Li_dblock( &lzip_index, i );
const struct Block * mb = Li_mblock( &lzip_index, i );
printf( "%6ld %14llu %14llu %14llu %14llu\n",
i + 1, db->pos, db->size, mb->pos, mb->size );
}
first_post = true; /* reprint heading after list of members */
}
fflush( stdout );
Li_free( &lzip_index );
}
if( verbosity >= 0 && files > 1 )
{
if( verbosity >= 1 ) fputs( " ", stdout );
list_line( total_uncomp, total_comp, "(totals)" );
fflush( stdout );
}
return retval;
}
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