// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "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:

 //

 #include "readers.h"

 // Descriptors support a maximum of 2^28 bytes.

 // The highest 4 bits are used for other purposes.

 static const TInt KMaxDesLen = (2 << 28) - 1;

 static const TInt KMinDesLen = -(2 << 28);		

 //

 //

 //

 CBufferReader::CBufferReader(const TDesC8& aBuffer)

  :	CReader(aBuffer, CReader::EBuffer)

 	{

 	}

 //

 //

 //

 CBufferReader::CBufferReader(const TDesC8& aBuffer, TReaderType aType)

  :	CReader(aBuffer, aType)

 	{

 	}

 //

 //

 //

 CBufferReader::~CBufferReader()

 	{

 	}

 //

 //

 //

 CBufferReader* CBufferReader::NewLC(const TDesC8& aBuffer)

 	{

 	CBufferReader* self = new(ELeave) CBufferReader(aBuffer);

 	CleanupStack::PushL(self);

 	self->ConstructL();

 	return self;

 	}

 //

 //

 //

 void CBufferReader::ConstructL()

 	{

 	}

 //

 //

 //

 void CBufferReader::Reset()

 	{

 	CReader::Reset();

 	}

 //

 //

 //

 void CBufferReader::SeekL(TInt64 aOffset)

 	{

 	// Symbian OS descriptors support a maximum size of 2^28 bytes.

 	if (aOffset > (TInt64)KMaxDesLen)

 		{

 		User::Leave(KErrNotSupported);

 		}

 	if (aOffset < (TInt64)KMinDesLen)

 		{

 		User::Leave(KErrNotSupported);

 		}

 	TInt low = (TInt)I64LOW(aOffset);

 	SeekL(low);

 	}

 //

 //

 //

 void CBufferReader::SeekL(TInt aOffset)

 	{

 	User::LeaveIfError(CReader::Seek(aOffset));

 	}