# header.hpp

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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: header.hpp,v 1.9.2.1 2009/01/24 16:01:16 edrusb Rel $
    00022 //
    00023 /*********************************************************************/
    00024
    00028
    00029
    00030 #ifndef HEADER_HPP
    00031 #define HEADER_HPP
    00032
    00033 #include "../my_config.h"
    00034 #include "infinint.hpp"
    00035 #include "generic_file.hpp"
    00036 #include "user_interaction.hpp"
    00037
    00038 namespace libdar
    00039 {
    00040     const unsigned int LABEL_SIZE = 10;
    00041
    00042     const char FLAG_NON_TERMINAL = 'N';
    00043     const char FLAG_TERMINAL = 'T';
    00044     const char EXTENSION_NO = 'N';
    00045     const char EXTENSION_SIZE = 'S';
    00046     const char EXTENSION_TLV = 'T';
    00047
    00048     const U_32 SAUV_MAGIC_NUMBER = 123;
    00049
    00050     typedef U_32 magic_number;
    00051     typedef char label[LABEL_SIZE];
    00052
    00053     extern void label_copy(label & left, const label & right);
    00054     extern bool header_label_is_equal(const label &a, const label &b);
    00055     extern void header_generate_internal_filename(label & ret);
    00056
    00057     struct header
    00058     {
    00059         magic_number magic;
    00060         label internal_name;
    00061         char flag;
    00062         char extension; // extension rules the use of the following fields
    00063         infinint size_ext; // if EXTENSION_SIZE
    00064
    00065         header();
    00066         header(const header & ref) { copy_from(ref); };
    00067         struct header & operator = (const header & ref) { copy_from(ref); return *this; };
    00068
    00069         void read(generic_file & f);
    00070         void write(generic_file & f);
    00071         void read(user_interaction & dialog, S_I fd);
    00072         void write(user_interaction & dialog, S_I fd);
    00073
    00074         static U_I size() { return sizeof(magic_number) + sizeof(label) + 2*sizeof(char); };
    00075         void copy_from(const header & ref);
    00076     };
    00077
    00078 } // end of namespace
    00079
    00080 #endif