//
//      aegis - project change supervisor
//      Copyright (C) 2005, 2006, 2008, 2012, 2014 Peter Miller
//
//      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 3 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, see
//      <http://www.gnu.org/licenses/>.
//

#ifndef LIBAEGIS_INPUT_SVT_CHECKOUT_H
#define LIBAEGIS_INPUT_SVT_CHECKOUT_H

#include <libaegis/input.h>

/**
  * The input_svt_checkout class is used to represent and input which is
  * a version extracted from a Simple Version Tool archive.
  */
class input_svt_checkout:
    public input
{
public:
    /**
      * The destructor.
      */
    virtual ~input_svt_checkout();

    /**
      * The create class method is used to create new dynamically
      * allocated instances of this class.
      *
      * @param filename
      *     The name of the history file being manipulated
      * @param version
      *     The version to checkout.
      */
    static pointer create(const nstring &filename, const nstring &version);

protected:
    // See base class for socumentation.
    nstring name(void);

    // See base class for socumentation.
    ssize_t read_inner(void *data, size_t nbytes);

    // See base class for socumentation.
    off_t length(void);

    // See base class for socumentation.
    off_t ftell_inner(void);

private:
    /**
      * The constructor.
      * It is private on pupose, use the #create vlass method instead.
      *
      * @param filename
      *     The name of the history file being manipulated
      * @param version
      *     The version to checkout.
      */
    input_svt_checkout(const nstring &filename, const nstring &version);

    input::pointer src1_p;
    input::pointer src2_p;
    input::pointer src3_p;
    input::pointer src4_p;
    off_t pos;

    /**
      * The default constructor.  Do not use.
      */
    input_svt_checkout();

    /**
      * The copy constructor.  Do not use.
      */
    input_svt_checkout(const input_svt_checkout &);

    /**
      * The assignment operator.  Do not use.
      */
    input_svt_checkout &operator=(const input_svt_checkout &);
};

#endif // LIBAEGIS_INPUT_SVT_CHECKOUT_H
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