elastic.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: elastic.hpp,v 1.5 2004/12/07 18:04:49 edrusb Rel $
00022 //
00023 /*********************************************************************/
00024 
00028 
00029 #ifndef ELASTIC_HPP
00030 #define ELASTIC_HPP
00031 
00032 #include "../my_config.h"
00033 
00034 #include "integers.hpp"
00035 #include "erreurs.hpp"
00036 #include "infinint.hpp"
00037 #include "generic_file.hpp"
00038 
00039 
00040 namespace libdar
00041 {
00042 
00043     enum elastic_direction { elastic_forward, elastic_backward };
00044 
00046 
00051     class elastic
00052     {
00053     public:
00054         elastic(U_32 size) { if(size == 0) throw Erange("elastic::elastic", gettext("zero is not a valid size for an elastic buffer")); taille = size; };
00055         elastic(const char *buffer, U_32 size, elastic_direction dir);
00056         elastic(generic_file &f, elastic_direction dir);
00057 
00058         U_32 dump(char *buffer, U_32 size) const;
00059         U_32 get_size() const { return taille; };
00060 
00061     private:
00062         U_32 taille; // max size of elastic buffer is 4GB which is large enough
00063 
00064         void randomize(char *a) const;
00065     };
00066 
00067 } // end of namespace
00068 
00069 #endif

Generated on Sun Aug 26 19:48:16 2007 for Disk ARchive by  doxygen 1.5.3