/*

* 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: 

* This contains constant definitions required by clients accessing the 

* Content Access Framework.

*

*/

/**

 @file

 @internalComponent

 @released

*/

#ifndef __CAFUTILS_H__

#define __CAFUTILS_H__

#include <e32std.h>

#include <charconv.h>

namespace ContentAccess

	{

	/** Provides static utility functions for the Content Access Framework*/

	class TCafUtils

		{

	public:

		/** Utility function to read a descriptor from a stream 

		@param aStream The stream

		@return An HBufC descriptor populated with the data from the stream

		*/

		static HBufC* ReadDescriptor16L(RReadStream& aStream);

		/** Utility function to write a descriptor to a stream 

		@param aStream The stream

		@param aDescriptor The descriptor

		*/

		static void WriteDescriptor16L(RWriteStream& aStream, const TDesC& aDescriptor);

		/** Utility function to read a descriptor from a stream 

		@param aStream The stream

		@return An HBufC descriptor populated with the data from the stream

		*/

		static HBufC8* ReadDescriptor8L(RReadStream& aStream);

		/** Utility function to read from a stream into an existing descriptor

		@param aStream The stream

		@param aBuffer Buffer to receive the data

		@leave KErrOverflow If the buffer is not large enough to hold the descriptor

		*/

		static void ReadDescriptor8L(RReadStream& aStream, TDes8& aBuffer);

		/** Utility function to write a descriptor to a stream 

		@param aStream The stream

		@param aDescriptor The descriptor

		*/

		static void WriteDescriptor8L(RWriteStream& aStream, const TDesC8& aDescriptor);

		};

	}

#endif // __CAF_H__