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//
//      aegis - project change supervisor
//      Copyright (C) 2005, 2006, 2008, 2012 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_VERIFY_CHECK_H
#define LIBAEGIS_INPUT_VERIFY_CHECK_H

#include <libaegis/input.h>

class input_verify_checksum:
    public input_ty
{
public:
    virtual ~input_verify_checksum();

    input_verify_checksum(input &deeper, unsigned long checksum);

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

    // See base class for documentation.
    nstring name();

    // See base class for documentation.
    off_t length();

    // See base class for documentation.
    off_t ftell_inner();

    // See base class for documentation.
    bool is_remote() const;

private:
    input deeper;

    unsigned long checksum_given;

    unsigned long checksum_calculated;

    off_t pos;

    input_verify_checksum();

    input_verify_checksum(const input_verify_checksum &);

    input_verify_checksum &operator=(const input_verify_checksum &);
};

#endif // LIBAEGIS_INPUT_VERIFY_CHECK_H
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