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Disk ARchive
2.5.2
Full featured and portable backup and archiving tool
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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