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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _VOS_ISTREAM_HXX_
#define _VOS_ISTREAM_HXX_
#include "sal/types.h"
# include <vos/types.hxx>
namespace vos
{
/** Interface for a stream of data, on that you can read and write blocks of bytes.
*/
class IStream
{
public:
IStream() { }
virtual ~IStream() { }
/** Retrieve n bytes from the stream and copy them into pBuffer.
@param pBuffer receives the read data.
@param n the number of bytes to read. pBuffer must be large enough
to hold the n bytes!
@return the number of read bytes
*/
virtual sal_Int32 SAL_CALL read(void* pBuffer,
sal_uInt32 n) const= 0;
/** Write n bytes from pBuffer to the stream.
@param pBuffer contains the data to be written.
@param n the number of bytes to write.
@return the number of written bytes
*/
virtual sal_Int32 SAL_CALL write(const void* pBuffer,
sal_uInt32 n)= 0;
/** Checks if stream is closed for further reading.
@return True is stream has ended (e.g. was closed).
*/
virtual sal_Bool SAL_CALL isEof() const = 0;
};
}
#endif // _VOS_ISTREAM_HXX_
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