1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * Definition of the Swi::Sis::CDataUnit

    16 *

    17 */

    18 

    19 

    20 #include "sisdataunit.h"

    21 #include "sisfiledata.h"

    22 

    23 using namespace Swi::Sis;

    24 

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

    26 	{

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

    28 	CleanupStack::PushL(self);

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

    30 	return self;

    31 	}

    32 

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

    34 	{

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

    36 	CleanupStack::Pop(self);

    37 	return self;

    38 	}

    39 

    40 CDataUnit::CDataUnit()

    41 	{

    42 	}

    43 

    44 CDataUnit::~CDataUnit()

    45 	{

    46 	iCompressedFiles.ResetAndDestroy();

    47 	}

    48 

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

    50 	{

    51 	

    52 	TInt64 fieldOffset = aBytesRead;

    53 	

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

    55 

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

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

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

    59 	}

    60 	

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

    62 	{	

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

    64 		{

    65 		User::Leave(KErrCorrupt);

    66 		}

    67 	

    68 	iCompressedFiles[aFileIndex]->ExtractDataFieldL(aFile);

    69 	}

    70 

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

    72 	{

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

    74 		{

    75 		User::Leave(KErrCorrupt);

    76 		}

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

    78 	}