summaryrefslogtreecommitdiffstats
path: root/list.cc
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--list.cc113
1 files changed, 113 insertions, 0 deletions
diff --git a/list.cc b/list.cc
new file mode 100644
index 0000000..befc874
--- /dev/null
+++ b/list.cc
@@ -0,0 +1,113 @@
+/* Lzip - LZMA lossless data compressor
+ Copyright (C) 2008-2022 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 <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 bool ignore_trailing, const bool loose_trailing )
+ {
+ 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, ignore_trailing, loose_trailing );
+ close( infd );
+ if( lzip_index.retval() != 0 )
+ {
+ show_file_error( input_filename, lzip_index.error().c_str() );
+ set_retval( retval, lzip_index.retval() );
+ continue;
+ }
+ 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( 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 )
+ {
+ std::fputs( " member data_pos data_size member_pos member_size\n", stdout );
+ for( long i = 0; i < members; ++i )
+ {
+ const Block & db = lzip_index.dblock( i );
+ const Block & mb = lzip_index.mblock( i );
+ std::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
+ }
+ std::fflush( stdout );
+ }
+ if( verbosity >= 0 && files > 1 )
+ {
+ if( verbosity >= 1 ) std::fputs( " ", stdout );
+ list_line( total_uncomp, total_comp, "(totals)" );
+ std::fflush( stdout );
+ }
+ return retval;
+ }