/*

* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

* Definition of CWriteStream which is used for streaming data from a descriptor

*

*/

/**

 @file 

 @internalComponent

 @released

*/

#ifndef __WRITESTREAM_H_

#define __WRITESTREAM_H_ 

#include <s32mem.h>

namespace Swi

{

/**

 * A class which acts as a wrapper around the RBufWriteStream class, automatically

 * creating a buffer to write into, and a stream to write into it. The class also provides

 * an acessor to the raw memory of the buffer.

 */

class CWriteStream : public CBase

	{

	public:

		/// Initial buffer size for the stream

		static const TInt KBufferSize;

		IMPORT_C static CWriteStream* NewL();

		IMPORT_C static CWriteStream* NewLC();

		/// operator so we can use this as an RBufWriteStream

		IMPORT_C operator RBufWriteStream&();

		// Access functions

		inline CBufFlat& Buffer();

		inline RBufWriteStream& Stream();

		IMPORT_C TPtr8 Ptr();

		// Modifiers

		/**

		 * Reallocates stream buffer, clears contents.

		 *

		 * @param aSize New stream buffer size.

		 */

		IMPORT_C void ReAllocL(TInt aSize);

		~CWriteStream();

	private:

		CWriteStream();

		void ConstructL();

		/// The memory buffer for the stream

		CBufFlat* iBuffer;

		/// The stream itself

		RBufWriteStream iWriteStream;

	};

// inline functions from CWriteStream

inline RBufWriteStream& CWriteStream::Stream()

	{

	return iWriteStream;

	}

inline CBufFlat& CWriteStream::Buffer()

	{

	return *iBuffer;

	}

} // namespace Swi

#endif // #ifndef __WRITESTREAM_H_