# tuyau.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: tuyau.hpp,v 1.13.4.1 2007/07/22 16:35:00 edrusb Rel $
    00022 //
    00023 /*********************************************************************/
    00024
    00032
    00033 #ifndef TUYAU_HPP
    00034 #define TUYAU_HPP
    00035
    00036 #include "../my_config.h"
    00037 #include "infinint.hpp"
    00038 #include "generic_file.hpp"
    00039 #include "thread_cancellation.hpp"
    00040
    00041 namespace libdar
    00042 {
    00043
    00045
    00047
    00048     class tuyau : public generic_file, public thread_cancellation
    00049     {
    00050     public:
    00051         tuyau(user_interaction & dialog, int fd); // fd is the filedescriptor of a pipe extremity
    00052         tuyau(user_interaction & dialog, int fd, gf_mode mode); // forces the mode if possible
    00053         tuyau(user_interaction & dialog, const std::string &filename, gf_mode mode);
    00054         ~tuyau() { close(filedesc); };
    00055
    00056             // inherited from generic_file
    00057         bool skip(const infinint & pos);
    00058         bool skip_to_eof();
    00059         bool skip_relative(signed int x);
    00060         infinint get_position() { return position; };
    00061
    00062     protected:
    00063         virtual int inherited_read(char *a, size_t size);
    00064         virtual int inherited_write(const char *a, size_t size);
    00065
    00066     private:
    00067         infinint position;
    00068         int filedesc;
    00069         std::string chemin; // named pipe open later
    00070
    00071         void ouverture();
    00072     };
    00073
    00074 } // end of namespace
    00075
    00076 #endif