Disk ARchive  2.5.2
Full featured and portable backup and archiving tool
fichier_global.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 : http://dar.linux.free.fr/email.html
00020 /*********************************************************************/
00021 
00027 
00029 
00030 #ifndef FICHIER_GLOBAL_HPP
00031 #define FICHIER_GLOBAL_HPP
00032 
00033 
00034 #include "../my_config.h"
00035 
00036 extern "C"
00037 {
00038 #if HAVE_UNISTD_H
00039 #include <unistd.h>
00040 #endif
00041 } // end extern "C"
00042 
00043 #include "integers.hpp"
00044 #include "thread_cancellation.hpp"
00045 #include "label.hpp"
00046 #include "crc.hpp"
00047 #include "user_interaction.hpp"
00048 #include "mem_ui.hpp"
00049 
00050 #include <string>
00051 
00052 namespace libdar
00053 {
00054 
00057 
00058     class fichier_global : public generic_file, public thread_cancellation, public mem_ui
00059     {
00060     public :
00061     enum advise
00062     {
00063         advise_normal,     //< no advise given by the application
00064         advise_sequential, //< application expect to read the data sequentially
00065         advise_random,     //< application expect to read the data in random order
00066         advise_noreuse,    //< application does not expect to read the data more than once
00067         advise_willneed,   //< application expect to read the data again in near future
00068         advise_dontneed    //< application will not read the data in near future
00069     };
00070 
00075         fichier_global(const user_interaction & dialog, gf_mode mode): generic_file(mode), mem_ui(dialog) {};
00076     fichier_global(const fichier_global & ref) : generic_file(ref), thread_cancellation(ref), mem_ui(ref) {};
00077 
00078         // default assignment operator is fine here
00079         // default destructor is fine too here
00080 
00082     virtual void change_ownership(const std::string & user, const std::string & group) = 0;
00083 
00085     virtual void change_permission(U_I perm) = 0;
00086 
00088         virtual infinint get_size() const = 0;
00089 
00091     virtual void fadvise(advise adv) const = 0;
00092 
00093     protected :
00104     virtual U_I fichier_global_inherited_write(const char *a, U_I size) = 0;
00105 
00106 
00117     virtual bool fichier_global_inherited_read(char *a, U_I size, U_I & read, std::string & message) = 0;
00118 
00119     private:
00120 
00121         // inherited from generic_file class and relocated as private methods
00122     void inherited_write(const char *a, U_I size);
00123     U_I inherited_read(char *a, U_I size);
00124     };
00125 
00126 
00128 
00129 } // end of namespace
00130 
00131 #endif
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