1 /*

     2 * Copyright (c) 2007-2009 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 *

    16 */

    17 

    18 

    19 /**

    20  @file

    21  @internalComponent

    22  @released

    23 */

    24 

    25 #include "typedefs.h"

    26 #include "rofsimage.h"

    27 

    28 /** 

    29 Constructor.

    30 

    31 @internalComponent

    32 @released

    33 

    34 @param aReader - image reader pointer

    35 */

    36 RofsImage::RofsImage(RCoreImageReader *aReader)

    37 : CCoreImage(aReader) ,

    38 iRofsHeader(0), iRofsExtnHeader(0),iAdjustment(0), 

    39 iImageType((RCoreImageReader::TImageType)0)

    40 {

    41 }

    42 

    43 /** 

    44 Destructor deletes iRofsHeader and iRofsExtnHeader.

    45 

    46 @internalComponent

    47 @released

    48 

    49 @param aReader - image reader pointer

    50 */

    51 RofsImage::~RofsImage()

    52 {

    53 	DELETE(iRofsHeader);

    54 	DELETE(iRofsExtnHeader);

    55 }

    56 

    57 /** 

    58 Function responsible to read the ROFS image and to construct the tree for the 

    59 elements available in Directory section.

    60 

    61 @internalComponent

    62 @released

    63 

    64 @return - returns the error code

    65 */

    66 TInt RofsImage::ProcessImage()

    67 {

    68 	int result = CreateRootDir();

    69 	if (result == KErrNone)

    70 	{

    71 		if (iReader->Open())

    72 		{

    73 			iImageType = iReader->ReadImageType();

    74 			if (iImageType == RCoreImageReader::E_ROFS)

    75 			{

    76 				iRofsHeader = new TRofsHeader;

    77 				result = iReader->ReadCoreHeader(*iRofsHeader);

    78 				if (result != KErrNone)

    79 					return result;

    80 				

    81 				SaveDirInfo(*iRofsHeader);

    82 				result = ProcessDirectory(0);

    83 			}

    84 			else if (iImageType == RCoreImageReader::E_ROFX)

    85 			{

    86 				iRofsExtnHeader = new TExtensionRofsHeader ;

    87 				result = iReader->ReadExtensionHeader(*iRofsExtnHeader);

    88 				if(result != KErrNone)

    89 					return result;

    90 

    91 				long filePos = iReader->FilePosition();

    92 				iAdjustment = iRofsExtnHeader->iDirTreeOffset - filePos;

    93 

    94 				SaveDirInfo(*iRofsExtnHeader);

    95 				result = ProcessDirectory(iAdjustment);

    96 			}

    97 			else

    98 			{

    99 				result = KErrNotSupported;

   100 			}

   101 		}

   102 		else

   103 		{

   104 			result = KErrGeneral;

   105 		}

   106 	}

   107 	return result;

   108 }