diff options
Diffstat (limited to 'extended.cc')
| -rw-r--r-- | extended.cc | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/extended.cc b/extended.cc index d03494f..1057142 100644 --- a/extended.cc +++ b/extended.cc @@ -1,5 +1,5 @@ /* Tarlz - Archiver with multimember lzip compression - Copyright (C) 2013-2020 Antonio Diaz Diaz. + Copyright (C) 2013-2021 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 @@ -24,16 +24,17 @@ #include <cstring> #include <string> #include <vector> -#include <pthread.h> +#include <pthread.h> // for tarlz.h #include <stdint.h> #include "tarlz.h" -namespace { - const CRC32 crc32c( true ); + +namespace { + unsigned decimal_digits( unsigned long long value ) { unsigned digits = 1; @@ -132,6 +133,7 @@ bool print_record( char * const buf, const int size, } // end namespace +std::vector< std::string > Extended::unknown_keywords; const std::string Extended::crc_record( "22 GNU.crc32=00000000\n" ); void Extended::calculate_sizes() const @@ -147,6 +149,22 @@ void Extended::calculate_sizes() const } +// print a diagnostic for each unknown keyword once per keyword +void Extended::unknown_keyword( const char * const buf, + const unsigned long long size ) const + { + unsigned long long eq_pos = 0; // position of '=' in buf + while( eq_pos < size && buf[eq_pos] != '=' ) ++eq_pos; + const std::string keyword( buf, eq_pos ); + for( unsigned i = 0; i < unknown_keywords.size(); ++i ) + if( keyword == unknown_keywords[i] ) return; + unknown_keywords.push_back( keyword ); + std::string msg( "Ignoring unknown extended header keyword '" ); + msg += keyword; msg += '\''; + show_error( msg.c_str() ); + } + + // Returns the extended block size, or -1 if error. long long Extended::format_block( Resizable_buffer & rbuf ) const { @@ -239,6 +257,8 @@ bool Extended::parse( const char * const buf, const unsigned long long edsize, return false; } } + else if( ( rest < 8 || std::memcmp( tail, "comment=", 8 ) != 0 ) && + verbosity >= 1 ) unknown_keyword( tail, rest ); pos += rsize; } return true; |