header_version.hpp

Go to the documentation of this file.
00001 /*********************************************************************/
00002 // dar - disk archive - a backup/restoration program
00003 // Copyright (C) 2002-2052 Denis Corbin
00004 //
00005 // This program is free software; you can redistribute it and/or
00006 // modify it under the terms of the GNU General Public License
00007 // as published by the Free Software Foundation; either version 2
00008 // of the License, or (at your option) any later version.
00009 //
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU General Public License
00016 // along with this program; if not, write to the Free Software
00017 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00018 //
00019 // to contact the author : dar.linux@free.fr
00020 /*********************************************************************/
00021 // $Id: header_version.hpp,v 1.12 2005/05/08 12:12:01 edrusb Rel $
00022 //
00023 /*********************************************************************/
00024 
00028 
00029 #ifndef HEADER_VERSION_HPP
00030 #define HEADER_VERSION_HPP
00031 
00032 #include "../my_config.h"
00033 #include "infinint.hpp"
00034 #include "generic_file.hpp"
00035 #include "tools.hpp"
00036 
00037 namespace libdar
00038 {
00039     const int VERSION_FLAG_SAVED_EA_ROOT = 0x80;      // no more used since version "05"
00040     const int VERSION_FLAG_SAVED_EA_USER = 0x40;      // no more used since version "05"
00041     const int VERSION_FLAG_SCRAMBLED     = 0x20;      // scrambled or strong encryption used
00042     const int VERSION_SIZE = 3;
00043     typedef char dar_version[VERSION_SIZE];
00044     extern void version_copy(dar_version & dst, const dar_version & src);
00045     extern bool version_greater(const dar_version & left, const dar_version & right);
00046         // operation left > right
00047 
00048     struct header_version
00049     {
00050         dar_version edition;
00051         char algo_zip;
00052         std::string cmd_line;
00053         unsigned char flag; // added at edition 02
00054 
00055         void read(generic_file &f)
00056             {
00057                 f.read(edition, sizeof(edition));
00058                 f.read(&algo_zip, sizeof(algo_zip));
00059                 tools_read_string(f, cmd_line);
00060                 if(version_greater(edition, "01"))
00061                     f.read((char *)&flag, (size_t)1);
00062                 else
00063                     flag = 0;
00064             };
00065         void write(generic_file &f)
00066             {
00067                 f.write(edition, sizeof(edition));
00068                 f.write(&algo_zip, sizeof(algo_zip));
00069                 tools_write_string(f, cmd_line);
00070                 f.write((char *)&flag, (size_t)1);
00071             };
00072     };
00073 
00074 } // end of namespace
00075 
00076 #endif

Generated on Sat Mar 1 02:37:01 2008 for Disk ARchive by  doxygen 1.5.3