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/* Lziprecover - Data recovery tool for the lzip format
Copyright (C) 2009-2024 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 <cerrno>
#include <cstdio>
#include <cstring>
#include <string>
#include <vector>
#include <stdint.h>
#include <unistd.h>
#include <sys/stat.h>
#include "lzip.h"
#include "lzip_index.h"
namespace {
void list_line( const unsigned long long uncomp_size,
const unsigned long long comp_size,
const char * const input_filename )
{
if( uncomp_size > 0 )
std::printf( "%14llu %14llu %6.2f%% %s\n", uncomp_size, comp_size,
100.0 - ( ( 100.0 * comp_size ) / uncomp_size ),
input_filename );
else
std::printf( "%14llu %14llu -INF%% %s\n", uncomp_size, comp_size,
input_filename );
}
} // end namespace
int list_files( const std::vector< std::string > & filenames,
const Cl_options & cl_opts )
{
unsigned long long total_comp = 0, total_uncomp = 0;
int files = 0, retval = 0;
bool first_post = true;
bool stdin_used = false;
for( unsigned i = 0; i < filenames.size(); ++i )
{
const bool from_stdin = filenames[i] == "-";
if( from_stdin ) { if( stdin_used ) continue; else stdin_used = true; }
const char * const input_filename =
from_stdin ? "(stdin)" : filenames[i].c_str();
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; }
const Lzip_index lzip_index( infd, cl_opts, cl_opts.ignore_errors,
cl_opts.ignore_errors );
close( infd );
if( lzip_index.retval() != 0 )
{
show_file_error( input_filename, lzip_index.error().c_str() );
set_retval( retval, lzip_index.retval() );
continue;
}
const bool multi_empty =
!from_stdin && !cl_opts.ignore_errors && lzip_index.multi_empty();
if( multi_empty ) set_retval( retval, 2 );
if( verbosity < 0 ) continue;
const unsigned long long udata_size = lzip_index.udata_size();
const unsigned long long cdata_size = lzip_index.cdata_size();
total_comp += cdata_size; total_uncomp += udata_size; ++files;
const long members = lzip_index.members();
if( first_post )
{
first_post = false;
if( verbosity >= 1 ) std::fputs( " dict memb trail ", stdout );
std::fputs( " uncompressed compressed saved name\n", stdout );
}
if( multi_empty )
{ std::fflush( stdout ); show_file_error( input_filename, empty_msg ); }
if( verbosity >= 1 )
std::printf( "%s %5ld %6lld ", format_ds( lzip_index.dictionary_size() ),
members, lzip_index.file_size() - cdata_size );
list_line( udata_size, cdata_size, input_filename );
if( verbosity >= 2 && ( members > 1 ||
( members == 1 && lzip_index.mblock( 0 ).pos() > 0 ) ) )
{
std::fputs( " member data_pos data_size member_pos member_size\n", stdout );
long long prev_end = 0;
for( long i = 0, gaps = 0; i < members; ++i )
{
const Block & db = lzip_index.dblock( i );
const Block & mb = lzip_index.mblock( i );
if( mb.pos() > prev_end )
{
std::printf( " gap - - %14llu %14llu\n",
prev_end, mb.pos() - prev_end );
++gaps;
}
std::printf( "%6ld %14llu %14llu %14llu %14llu\n",
i + gaps + 1, db.pos(), db.size(), mb.pos(), mb.size() );
prev_end = mb.end();
}
first_post = true; // reprint heading after list of members
}
std::fflush( stdout );
if( std::ferror( stdout ) ) break;
}
if( verbosity >= 0 && files > 1 && !std::ferror( stdout ) )
{
if( verbosity >= 1 ) std::fputs( " ", stdout );
list_line( total_uncomp, total_comp, "(totals)" );
std::fflush( stdout );
}
if( verbosity >= 0 && ( std::ferror( stdout ) || std::fclose( stdout ) != 0 ) )
{ show_file_error( "(stdout)", write_error_msg, errno );
set_retval( retval, 1 ); }
return retval;
}
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