// Copyright (c) 2004-2009 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:

// Name        : TTCPCompMsgEnd.cpp

// Part of     : ConnectionMgr

// Implementation

// Version     : SIP/4.0

//

#include "TTCPCompMsgEnd.h"

#include "MMsgAssemblerContext.h"

#include "MSigCompController.h"

#include "sipmessage.h"

#include "SipAssert.h"

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

// TTCPCompMsgEnd::DataReceivedL

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

//

void TTCPCompMsgEnd::DataReceivedL( TPtr8 aData, TUint&  aNextLength )

	{

	// panic if sigcomp is not supported in debug mode.leaves in release mode.

	__SIP_ASSERT_LEAVE(	iMsgAssembler.SigComp().IsSupported(), KErrGeneral );

	// panic if received data is not compressed in debug mode.

	// leaves in release mode.

	__SIP_ASSERT_LEAVE(	iMsgAssembler.SigComp().IsSigCompMsg( aData ), 

	                    KErrGeneral );

	// panic if received data is not completed compressed msg in debug mode.

	// leaves in release mode.

	__SIP_ASSERT_LEAVE(	

			iMsgAssembler.SigComp().IsCompleteSigCompMessageL( aData ), 

	        KErrGeneral );

	TUint bytesConsumed( 0 );

	CBufBase* decompressedData = iMsgAssembler.SigComp().DecompressL( 

											aData, bytesConsumed, ETrue);

    TUint dataLen( static_cast<TUint>( aData.Length() ) );

    // Whole data was not decompressed and non-decompressed data might

	// be part of next sigcomp message, remember amount of non-decompressed

	// data

	iMsgAssembler.SetUnConsumedBytes( dataLen - bytesConsumed );

	if ( bytesConsumed < dataLen )

		{	

    	CleanupStack::PushL(decompressedData);

		aData.Delete(0, bytesConsumed);

		HBufC8* newData = 

		   HBufC8::NewL( decompressedData->Size() + aData.Length() );

	    // copy the msg buffer data and the received data to new data buffer

	    TPtr8 newDataPtr = newData->Des();

	    newDataPtr.Append(decompressedData->Ptr(0));

 	    CleanupStack::PopAndDestroy(decompressedData);

	    newDataPtr.Append(aData);

	    // delete all content of received data

	    aData.Delete( 0, aData.Length() );

  	    CleanupStack::PushL(newData);

  	    DecideNextStateL( newDataPtr, aNextLength );

	    CleanupStack::PopAndDestroy(newData);	

		}	

	else if ( bytesConsumed == dataLen )

		{

		CleanupStack::PushL( decompressedData );

		aData.Delete(0, bytesConsumed);	

		TPtr8 decompressedDataPtr = decompressedData->Ptr(0);

	    DecideNextStateL( decompressedDataPtr, aNextLength );

	    CleanupStack::PopAndDestroy( decompressedData );

		}

	else // bytesConsumed > dataLen error happens, reset the state

		{

		delete decompressedData;

		iMsgAssembler.ChangeState( MMsgAssemblerContext::EMsgInit );

		}				

	}

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

// TTCPCompMsgEnd::DecideNextStateL

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

//	

void TTCPCompMsgEnd::DecideNextStateL( TPtr8 aData, TUint&  aNextLength )

    {

    // if there's already some content, decompressed stuff (aData) is 

    // complementing existing content and header "parsing" states can be

    // skipped

    CSIPMessage* message = iMsgAssembler.Message();

    if ( message && message->Content().Length() > 0 )

        {

        iMsgAssembler.ChangeState( MMsgAssemblerContext::EMsgContentStart );  

        }

    else

        {

        iMsgAssembler.ChangeState( MMsgAssemblerContext::EMsgHeaderStart );

        }

    iMsgAssembler.CurrentState().DataReceivedL( aData, aNextLength );

    }

// End of File