1 /*

     2 * Copyright (c) 2008 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 "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:  Templated algorithms to simplify object handling

    15 *

    16 */

    17 

    18 

    19 #include <e32base.h>

    20 

    21 

    22 // -----------------------------------------------------------------------------

    23 // TCacheObjectPacker::PackL() implementation.

    24 // -----------------------------------------------------------------------------

    25 //

    26 template< class T >

    27 HBufC8* TCacheObjectPacker<T>::PackL( const T& aObj )

    28 	{

    29     // we don't know how large the returned descriptor is going to be

    30     CBufFlat* packBuf = CBufFlat::NewL( KObjectBufGranurality );

    31     CleanupStack::PushL( packBuf );

    32 

    33     RBufWriteStream ws;

    34     ws.Open( *packBuf ); // CSI: 65 #

    35     CleanupClosePushL( ws );

    36 

    37     aObj.ExternalizeL( ws );

    38 

    39     ws.CommitL();

    40     CleanupStack::PopAndDestroy(); //ws

    41 

    42     // now CBufFlat contains the descriptor

    43     HBufC8* packBufDesc = packBuf->Ptr(0).AllocL();

    44 

    45     CleanupStack::PopAndDestroy( packBuf );

    46     return packBufDesc;

    47 

    48 	}

    49 

    50 // -----------------------------------------------------------------------------

    51 // TCacheObjectPacker::UnPackL() implementation.

    52 // -----------------------------------------------------------------------------

    53 //

    54 template< class T >

    55 void TCacheObjectPacker<T>::UnPackL( T& aObj, const TDesC8& aPack )

    56 	{

    57     if ( ! aPack.Length() )

    58         {

    59         // empty, don't attempt to unpack.

    60         return;

    61         }

    62 

    63     RDesReadStream rs;

    64     CleanupClosePushL( rs );

    65     rs.Open( aPack ); // CSI: 65 #

    66     aObj.InternalizeL( rs );

    67     CleanupStack::PopAndDestroy(); // rs

    68 

    69 	}

    70