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 HEADER_H 00026 #define HEADER_H 00027 00028 #pragma interface 00029 00030 #include "infinint.hpp" 00031 #include "generic_file.hpp" 00032 00033 #define LABEL_SIZE 10 00034 00035 #define FLAG_NON_TERMINAL 'N' 00036 #define FLAG_TERMINAL 'T' 00037 #define EXTENSION_NO 'N' 00038 #define EXTENSION_SIZE 'S' 00039 00040 #define SAUV_MAGIC_NUMBER 123 00041 00042 typedef U_32 magic_number; 00043 typedef char label[LABEL_SIZE]; 00044 00045 extern void label_copy(label & left, const label & right); 00046 extern bool header_label_is_equal(const label &a, const label &b); 00047 extern void header_generate_internal_filename(label & ret); 00048 00049 struct header 00050 { 00051 magic_number magic; 00052 label internal_name; 00053 char flag; 00054 char extension; // extension rules the use of the following fields 00055 infinint size_ext; // if EXTENSION_SIZE 00056 00057 header(); 00058 header(const header & ref) { copy_from(ref); }; 00059 struct header & operator = (const header & ref) { copy_from(ref); return *this; }; 00060 00061 void read(generic_file & f); 00062 void write(generic_file & f); 00063 void read(S_I fd); 00064 void write(S_I fd); 00065 00066 static U_I size() { return sizeof(magic_number) + sizeof(label) + 2*sizeof(char); }; 00067 void copy_from(const header & ref); 00068 }; 00069 00070 #endif