/*

* 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: 

*

*/

/**

 @file 

 @internalTechnology

 @released

*/

#ifndef __SISPTRPROVIDER_H__

#define __SISPTRPROVIDER_H__

namespace Swi

	{

namespace Sis

	{

	/**

	 * @publishedPartner

	 * @released

	 */ 

	class TPtrProvider

		{

	public:

		inline TPtrProvider(TPtr8 aDataSource, TUint aPos = 0);

		inline TPtrC8 ReadL(TUint aLength);

	private:

		TPtr8 iDataSource;

		TUint iPos;

		};

	inline TPtrProvider::TPtrProvider(TPtr8 aDataSource, TUint aPos)

		: iDataSource(aDataSource), iPos(aPos)

		{

		}

	inline TPtrC8 TPtrProvider::ReadL(TUint aLength)

		{

		if (aLength + iPos > iDataSource.Length())

			{

			User::Leave(KErrEof);

			}

		TPtrC8 ret(iDataSource.Mid(iPos, aLength));

		iPos += aLength;

		return ret;

		}

	} /* namespace Swi::Sis */

	} /* namespace Swi */

#endif /* __SISPTRPROVIDER_H__ */