RVNGStream.h

Go to the documentation of this file.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* librevenge
 * Version: MPL 2.0 / LGPLv2.1+
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Major Contributor(s):
 * Copyright (C) 2004-2005 William Lachance (wrlach@gmail.com)
 *
 * For minor contributions see the git repository.
 *
 * Alternatively, the contents of this file may be used under the terms
 * of the GNU Lesser General Public License Version 2.1 or later
 * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
 * applicable instead of those above.
 */
 
#ifndef RVNGSTREAM_H
#define RVNGSTREAM_H
 
namespace librevenge
{
 
enum RVNG_SEEK_TYPE
{
        RVNG_SEEK_CUR,
        RVNG_SEEK_SET,
        RVNG_SEEK_END
};
 
class RVNGInputStream
{
public:
        RVNGInputStream() {}
        virtual ~RVNGInputStream() {}

        virtual bool isStructured() = 0;
 
        virtual unsigned subStreamCount() = 0;
 
        virtual const char *subStreamName(unsigned id) = 0;
 
        virtual bool existsSubStream(const char *name) = 0;

        virtual RVNGInputStream *getSubStreamByName(const char *name) = 0;
 
        virtual RVNGInputStream *getSubStreamById(unsigned id) = 0;

        virtual const unsigned char *read(unsigned long numBytes, unsigned long &numBytesRead) = 0;

        virtual int seek(long offset, RVNG_SEEK_TYPE seekType) = 0;

        virtual long tell() = 0;

        virtual bool isEnd() = 0;
};
 
}
 
#endif
/* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */