/*

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

*

*/

#include <e32base.h>

// -----------------------------------------------------------------------------

// TCacheObjectPacker::PackL() implementation.

// -----------------------------------------------------------------------------

//

template< class T >

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

	{

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

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

    CleanupStack::PushL( packBuf );

    RBufWriteStream ws;

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

    CleanupClosePushL( ws );

    aObj.ExternalizeL( ws );

    ws.CommitL();

    CleanupStack::PopAndDestroy(); //ws

    // now CBufFlat contains the descriptor

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

    CleanupStack::PopAndDestroy( packBuf );

    return packBufDesc;

	}

// -----------------------------------------------------------------------------

// TCacheObjectPacker::UnPackL() implementation.

// -----------------------------------------------------------------------------

//

template< class T >

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

	{

    if ( ! aPack.Length() )

        {

        // empty, don't attempt to unpack.

        return;

        }

    RDesReadStream rs;

    CleanupClosePushL( rs );

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

    aObj.InternalizeL( rs );

    CleanupStack::PopAndDestroy(); // rs

	}