/*

* 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 the Swi::Sis::CDataUnit

*

*/

#include "sisdataunit.h"

#include "sisfiledata.h"

using namespace Swi::Sis;

/*static*/ CDataUnit* CDataUnit::NewLC(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CDataUnit* self = new(ELeave) CDataUnit();

	CleanupStack::PushL(self);

	self->ConstructL(aDataProvider, aBytesRead, aTypeReadBehaviour);

	return self;

	}

/*static*/ CDataUnit* CDataUnit::NewL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	CDataUnit* self = NewLC(aDataProvider, aBytesRead, aTypeReadBehaviour);

	CleanupStack::Pop(self);

	return self;

	}

CDataUnit::CDataUnit()

	{

	}

CDataUnit::~CDataUnit()

	{

	iCompressedFiles.ResetAndDestroy();

	}

void CDataUnit::ConstructL(MSisDataProvider& aDataProvider, TInt64& aBytesRead, TReadTypeBehaviour aTypeReadBehaviour)

	{

	TInt64 fieldOffset = aBytesRead;

	CField::ConstructL(aDataProvider, EFieldTypeDataUnit, aBytesRead, aTypeReadBehaviour);

	ReadMemberArrayL(aDataProvider, iCompressedFiles, EFieldTypeFileData, aBytesRead, EReadType);

	CField::SkipUnknownFieldsL(aDataProvider, aBytesRead - fieldOffset, aBytesRead, aTypeReadBehaviour);

	CField::EnsureAlignedL(aDataProvider, aBytesRead - fieldOffset, aBytesRead, aTypeReadBehaviour);

	}

void CDataUnit::ExtractDataFileL(RFile& aFile, TInt aFileIndex)

	{	

	if ((aFileIndex < 0) || (aFileIndex >= iCompressedFiles.Count()))

		{

		User::Leave(KErrCorrupt);

		}

	iCompressedFiles[aFileIndex]->ExtractDataFieldL(aFile);

	}

void CDataUnit::ExtractDataFileL(RFile& aFile, TInt aFileIndex, TInt64 aLength)

	{

	if ((aFileIndex < 0) || (aFileIndex >= iCompressedFiles.Count()))

		{

		User::Leave(KErrCorrupt);

		}

	iCompressedFiles[aFileIndex]->ExtractDataFieldL(aFile, aLength);

	}