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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 HIDE_FILE_HPP 00027 #define HIDE_FILE_HPP 00028 00029 #include "../my_config.h" 00030 #include <vector> 00031 #include "infinint.hpp" 00032 #include "generic_file.hpp" 00033 00034 using namespace libdar; 00035 using namespace std; 00036 00039 00040 class hide_file : public generic_file 00041 { 00042 public: 00043 hide_file(generic_file &f); 00044 00045 bool skippable(skippability direction, const infinint & amount) { return true; }; 00046 bool skip(const infinint & pos); 00047 bool skip_to_eof(); 00048 bool skip_relative(S_I x); 00049 infinint get_position() const; 00050 00051 protected: 00052 struct partie 00053 { 00054 infinint debut, longueur; // debut is the offset in ref file 00055 infinint offset; // offset in the resulting file 00056 }; 00057 00058 vector <partie> morceau; 00059 generic_file *ref; 00060 00061 void inherited_read_ahead(const infinint & amount) { ref->read_ahead(amount); }; 00062 U_I inherited_read(char *a, U_I size); 00063 void inherited_write(const char *a, size_t size); 00064 void inherited_sync_write() {}; 00065 void inherited_flush_read() {}; 00066 void inherited_terminate() {}; 00067 00068 virtual void fill_morceau() = 0; 00069 // the inherited classes have with this method 00070 // to fill the "morceau" variable that defines 00071 // the portions 00072 00073 private: 00074 U_I pos_index; 00075 infinint pos_relicat; 00076 bool is_init; 00077 00078 void init() const; 00079 }; 00080 00082 00083 00084 #endif