Disk ARchive
2.4.5
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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 : dar.linux@free.fr 00020 /*********************************************************************/ 00021 // $Id$ 00022 // 00023 /*********************************************************************/ 00024 00025 #ifndef TRONC_HPP 00026 #define TRONC_HPP 00027 00028 #pragma interface 00029 00030 #include "generic_file.hpp" 00031 00032 class tronc : public generic_file 00033 { 00034 public : 00035 tronc(generic_file *f, const infinint &offset, const infinint &size); 00036 tronc(generic_file *f, const infinint &offset, const infinint &size, gf_mode mode); 00037 00038 bool skip(const infinint & pos); 00039 bool skip_to_eof(); 00040 bool skip_relative(S_I x); 00041 infinint get_position() { return current; }; 00042 00043 protected : 00044 S_I inherited_read(char *a, size_t size); 00045 S_I inherited_write(char *a, size_t size); 00046 00047 private : 00048 infinint start, sz; 00049 generic_file *ref; 00050 infinint current; 00051 }; 00052 00053 #endif