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//
// tardy - a tar post-processor
// Copyright (C) 1998, 1999, 2008, 2009, 2011 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 LIBTARDY_TAR_INPUT_FILTER_H
#define LIBTARDY_TAR_INPUT_FILTER_H
#include <libtardy/tar/input.h>
/**
* The tar_input_filter class is used to represent the state of an
* input filter. It remembers the origin of the input, and implements
* transparent methods by default. Specific filters will want to
* override some or all of these defaults.
*/
class tar_input_filter:
public tar_input
{
public:
/**
* The destructor.
*/
virtual ~tar_input_filter();
protected:
/**
* The constructor.
* For use by derived classes only.
*
* @param deeper
* The input archive from which to read our input.
*/
tar_input_filter(const tar_input::pointer &deeper);
// See base class for documentation.
void read_archive_begin(void);
// See base class for documentation.
virtual bool read_header(tar_header &hdr);
// See base class for documentation.
virtual void read_header_padding(void);
// See base class for documentation.
virtual int read_data(void *data, int data_size);
// See base class for documentation.
virtual void read_data_padding(void);
// See base class for documentation.
void read_archive_end(void);
// See base class for documentation.
rcstring filename(void) const;
// See base class for documentation.
const char *get_format_name(void) const;
// See base class for documentation.
format_family_t get_format_family(void) const;
// See base class for documentation.
size_t get_maximum_name_length(void) const;
private:
/**
* The deeper instance variable is used to remember the deeper
* archive from which to read our input.
*/
tar_input::pointer deeper;
/**
* Default constructor. Do not use.
*/
tar_input_filter();
/**
* Copy constructor. Do not use.
*/
tar_input_filter(const tar_input_filter &);
/**
* Assignment operator. Do not use.
*/
tar_input_filter &operator=(const tar_input_filter &);
};
#endif // LIBTARDY_TAR_INPUT_FILTER_H
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