/*

* Copyright (c) 2006-2006 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:  CFServiceUtils methods.

*

*/

#include <s32strm.h>

#include "cfserviceutils.h"

#include "cftrace.h"

// CONSTANTS

#ifdef _DEBUG

// Panic category

_LIT( KPanicCat, "CFSERVUTIL" );

// Panic codes

enum TPanicReason

    {

    ENullPointer

    };

LOCAL_C void Panic( TInt aCode )

    {

    User::Panic( KPanicCat, aCode );

    }

#endif

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

// CFServiceUtils::UpdateBufferL

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

//

void CFServiceUtils::UpdateBufferL( HBufC*& aBuffer,

    const TDesC& aNewData )

    {

    FUNC_LOG;

    __ASSERT_DEBUG( aBuffer, Panic( ENullPointer ) );

    TPtr bufferPtr = aBuffer->Des();

    if( aNewData.Length() < bufferPtr.MaxLength() )

        {

        // Just copy data

        bufferPtr.Copy( aNewData );

        }

    else

        {

        // need to increase buffer and copy

        delete aBuffer;

        aBuffer = NULL;

        aBuffer = aNewData.AllocL();

        }

    }

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

// CFServiceUtils::WriteIntoStreamL

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

//

void CFServiceUtils::WriteIntoStreamL( const HBufC* const aBuf,

    RWriteStream& aStream )

    {

    FUNC_LOG;

    TPtrC bufPtrC( KNullDesC );

    if( aBuf )

        {

        bufPtrC.Set( *aBuf );

        }

    TInt length = bufPtrC.Length();

    aStream.WriteInt16L( length );

    if( length > 0 )

        {

        aStream.WriteL( bufPtrC, length );

        }

    }

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

// CFServiceUtils::ReadFromStreamL

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

//

void CFServiceUtils::ReadFromStreamL( HBufC*& aBuffer,

    RReadStream& aStream )

    {

    FUNC_LOG;

    TInt length = aStream.ReadInt16L();

    if( length > 0 )

        {

        // Create new temporary buffer

        HBufC* buffer = HBufC::NewLC( length );

        // Read data

        TPtr valuePtr = buffer->Des();

        aStream.ReadL( valuePtr, length );

        CleanupStack::Pop( buffer );

        // Update buffer

        delete aBuffer;

        aBuffer = NULL;

        aBuffer = buffer;

        }

    }