hide_file.hpp

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: hide_file.hpp,v 1.10.4.1 2007/07/22 16:34:59 edrusb Rel $
00022 //
00023 /*********************************************************************/
00024 
00025 #ifndef HIDE_FILE_HPP
00026 #define HIDE_FILE_HPP
00027 
00028 #include "../my_config.h"
00029 #include <vector>
00030 #include "infinint.hpp"
00031 #include "generic_file.hpp"
00032 
00033 using namespace libdar;
00034 using namespace std;
00035 
00036 class hide_file : public generic_file
00037 {
00038 public:
00039     hide_file(user_interaction & dialog, generic_file &f);
00040 
00041     bool skip(const infinint & pos);
00042     bool skip_to_eof();
00043     bool skip_relative(S_I x);
00044     infinint get_position();
00045 
00046 protected:
00047     struct partie
00048     {
00049         infinint debut, longueur; // debut is the offset in ref file
00050         infinint offset; // offset in the resulting file
00051     };
00052 
00053     vector <partie> morceau;
00054     generic_file *ref;
00055 
00056     S_I inherited_read(char *a, size_t size);
00057     S_I inherited_write(const char *a, size_t size);
00058 
00059     virtual void fill_morceau() = 0;
00060         // the inherited classes have with this method
00061         // to fill the "morceau" variable that defines
00062         // the portions
00063 
00064 private:
00065     U_I pos_index;
00066     infinint pos_relicat;
00067     bool is_init;
00068 
00069     void init();
00070 };
00071 
00072 
00073 #endif

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