diff options
Diffstat (limited to 'zupdate.cc')
| -rw-r--r-- | zupdate.cc | 55 |
1 files changed, 21 insertions, 34 deletions
@@ -1,5 +1,5 @@ /* Zupdate - recompress bzip2, gzip, xz files to lzip files - Copyright (C) 2013, 2014 Antonio Diaz Diaz. + Copyright (C) 2013-2015 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 @@ -75,6 +75,7 @@ void show_help() " -f, --force do not skip a file even if the .lz exists\n" " -k, --keep keep (don't delete) input files\n" " -l, --lzip-verbose pass a -v option to the lzip compressor\n" + " -M, --format=<list> exclude formats not in <list>\n" " -N, --no-rcfile don't read runtime configuration file\n" " -q, --quiet suppress all messages\n" " -r, --recursive operate recursively on directories\n" @@ -124,47 +125,29 @@ void set_permissions( const char * const rname, const struct stat & in_stats ) } -struct { const char * from; const char * to; int format_index; } const - known_extensions[] = { - { ".bz2", "", fmt_bz2 }, - { ".tbz", ".tar", fmt_bz2 }, - { ".tbz2", ".tar", fmt_bz2 }, - { ".gz", "", fmt_gz }, - { ".tgz", ".tar", fmt_gz }, - { ".lz", "", fmt_lz }, - { ".tlz", ".tar", fmt_lz }, - { ".xz", "", fmt_xz }, - { ".txz", ".tar", fmt_xz }, - { 0, 0, -1 } }; - - // Returns 0 for success, -1 for file skipped, 1 for error. int zupdate_file( const std::string & name, const char * const lzip_name, const std::vector< std::string > & lzip_args2, - const bool force, const bool keep_input_files ) + const bool force, const bool keep_input_files, + const bool no_rcfile ) { static int disable_xz = -1; // tri-state bool int format_index = -1; std::string dname; // decompressed_name - for( int i = 0; known_extensions[i].from; ++i ) // search extension + const int eindex = extension_index( name ); // search extension + if( eindex >= 0 ) { - const std::string from( known_extensions[i].from ); - if( name.size() > from.size() && - name.compare( name.size() - from.size(), from.size(), from ) == 0 ) + format_index = extension_format( eindex ); + if( format_index == fmt_lz ) { - dname.assign( name, 0, name.size() - from.size() ); - dname += known_extensions[i].to; - format_index = known_extensions[i].format_index; - if( format_index == fmt_lz ) - { - if( verbosity >= 2 ) - std::fprintf( stderr, "%s: Input file '%s' already has '%s' suffix.\n", - program_name, name.c_str(), known_extensions[i].from ); - return 0; // ignore this file - } - break; + if( verbosity >= 2 ) + std::fprintf( stderr, "%s: Input file '%s' already has '%s' suffix.\n", + program_name, name.c_str(), extension_from( eindex ) ); + return 0; // ignore this file } + dname.assign( name, 0, name.size() - std::strlen( extension_from( eindex ) ) ); + dname += extension_to( eindex ); } const char * const compressor_name = get_compressor_name( format_index ); if( !compressor_name ) @@ -285,6 +268,7 @@ int zupdate_file( const std::string & name, const char * const lzip_name, while( i > 0 && zcmp_command[i-1] != '/' ) --i; zcmp_command.resize( i ); zcmp_command += "zcmp "; // ${bindir}zcmp + if( no_rcfile ) zcmp_command += "-N "; zcmp_command += name; zcmp_command += ' '; zcmp_command += rname; int status = std::system( zcmp_command.c_str() ); if( status != 0 ) @@ -313,6 +297,7 @@ int main( const int argc, const char * const argv[] ) std::vector< std::string > lzip_args2; // args to lzip, maybe empty bool force = false; bool keep_input_files = false; + bool no_rcfile = false; bool recursive = false; invocation_name = argv[0]; program_name = "zupdate"; @@ -333,6 +318,7 @@ int main( const int argc, const char * const argv[] ) { 'h', "help", Arg_parser::no }, { 'k', "keep", Arg_parser::no }, { 'l', "lzip-verbose", Arg_parser::no }, + { 'M', "format", Arg_parser::yes }, { 'N', "no-rcfile", Arg_parser::no }, { 'q', "quiet", Arg_parser::no }, { 'r', "recursive", Arg_parser::no }, @@ -355,7 +341,7 @@ int main( const int argc, const char * const argv[] ) { const int code = parser.code( argind ); if( !code ) break; // no more options - const char * const arg = parser.argument( argind ).c_str(); + const std::string & arg = parser.argument( argind ); switch( code ) { case '0': case '1': case '2': case '3': case '4': @@ -365,7 +351,8 @@ int main( const int argc, const char * const argv[] ) case 'h': show_help(); return 0; case 'k': keep_input_files = true; break; case 'l': lzip_args2.push_back( "-v" ); break; - case 'N': break; + case 'M': parse_format_list( arg ); break; + case 'N': no_rcfile = true; break; case 'q': verbosity = -1; lzip_args2.push_back( "-q" ); break; case 'r': recursive = true; break; case 'v': if( verbosity < 4 ) ++verbosity; break; @@ -395,7 +382,7 @@ int main( const int argc, const char * const argv[] ) while( next_filename( filenames, input_filename, error, recursive, true ) ) { int tmp = zupdate_file( input_filename, lzip_name, lzip_args2, force, - keep_input_files ); + keep_input_files, no_rcfile ); if( tmp < 0 ) error = true; if( tmp > retval ) retval = tmp; if( tmp > 0 ) break; |