Disk ARchive  2.5.2
Full featured and portable backup and archiving tool
archive_version.hpp
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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 : http://dar.linux.free.fr/email.html
00020 /*********************************************************************/
00021 
00025 
00026 #ifndef ARCHIVE_VERSION_HPP
00027 #define ARCHIVE_VERSION_HPP
00028 
00029 #include "../my_config.h"
00030 
00031 #include <string>
00032 
00033 #include "integers.hpp"
00034 #include "infinint.hpp"
00035 #include "generic_file.hpp"
00036 
00037 namespace libdar
00038 {
00039 
00042 
00044     class archive_version
00045     {
00046     public:
00048 
00054     archive_version(U_16 x = 0, unsigned char fix = 0);
00055 
00056     bool operator < (const archive_version & ref) const { return value() < ref.value(); };
00057     bool operator >= (const archive_version & ref) const { return value() >= ref.value(); };
00058     bool operator == (const archive_version & ref) const { return value() == ref.value(); };
00059     bool operator != (const archive_version & ref) const { return value() != ref.value(); };
00060     bool operator > (const archive_version & ref) const { return value() > ref.value(); };
00061     bool operator <= (const archive_version & ref) const { return value() <= ref.value(); };
00062 
00063     void dump(generic_file & f) const;
00064     void read(generic_file & f);
00065     std::string display() const;
00066 
00067     private:
00068     U_16 version;
00069     unsigned char fix;
00070 
00071     U_I value() const { return (U_I)(version)*256 + fix; };
00072     static unsigned char to_digit(unsigned char val);
00073     static unsigned char to_char(unsigned char val);
00074     };
00075 
00076     extern const archive_version empty_archive_version();
00077 
00079 
00080 } // end of namespace
00081 
00082 #endif
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