zapette.hpp

Go to the documentation of this file.

/*********************************************************************/
// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2052 Denis Corbin
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
// to contact the author : http://dar.linux.free.fr/email.html
/*********************************************************************/


#ifndef ZAPETTE_HPP
#define ZAPETTE_HPP

#include "../my_config.h"
#include "infinint.hpp"
#include "generic_file.hpp"
#include "integers.hpp"

namespace libdar
{




    class zapette : public generic_file, public contextual, protected mem_ui
    {
    public:


        zapette(user_interaction & dialog, generic_file *input, generic_file *output, bool by_the_end);
        ~zapette();

            // inherited methods from generic_file
        bool skip(const infinint &pos);
        bool skip_to_eof() { if(is_terminated()) throw SRC_BUG; position = file_size; return true; };
        bool skip_relative(S_I x);
        infinint get_position() { if(is_terminated()) throw SRC_BUG; return position; };

            // overwritten inherited methods from contextual
        void set_info_status(const std::string & s);
        bool is_an_old_start_end_archive() const;
        const label & get_data_name() const;

    protected:
        U_I inherited_read(char *a, U_I size);
        void inherited_write(const char *a, U_I size);
        void inherited_sync_write() {};
        void inherited_terminate();

    private:
        generic_file *in, *out;
        infinint position, file_size;
        char serial_counter;



        void make_transfert(U_16 size, const infinint &offset, char *data, const std::string & info, S_I & lu, infinint & arg) const;
    };


    class slave_zapette
    {
    public:


        slave_zapette(generic_file *input, generic_file *output, generic_file *data);
        ~slave_zapette();



        void action();

    private:
        generic_file *in;     //< where to read orders from
        generic_file *out;    //< where to send requested info or data to
        generic_file *src;    //< where to read data from
        contextual *src_ctxt; //< same as src but seen as contextual
    };


} // end of namespace

#endif