// 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          : CSIPCallIDHeader.cpp

// Part of       : SIP Codec

// Version       : SIP/4.0 

//

#include "sipcallidheader.h"

#include "sipcodecerr.h"

#include "SIPSyntaxCheck.h"

#include "sipcodecutils.h"

#include "sipstrings.h"

#include "sipstrconsts.h"

#include "_sipcodecdefs.h"

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

// CSIPCallIDHeader::DecodeL

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

//

EXPORT_C CSIPCallIDHeader* CSIPCallIDHeader::DecodeL (const TDesC8& aValue)

	{

	TLex8 lex(aValue);

	lex.SkipSpace();

	TPtrC8 value(lex.Remainder());

	__ASSERT_ALWAYS(value.Length() > 0, User::Leave(KErrSipCodecCallIdHeader));

	CSIPCallIDHeader* self = new(ELeave)CSIPCallIDHeader;

	CleanupStack::PushL(self);		

	self->ParseL (value);

	self->iCallID = value.AllocL();

	CleanupStack::Pop(self);

	return self;

	}

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

// CSIPCallIDHeader::CSIPCallIDHeader

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

//

CSIPCallIDHeader::CSIPCallIDHeader()

	{

	}

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

// CSIPCallIDHeader::~CSIPCallIDHeader

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

//

EXPORT_C CSIPCallIDHeader::~CSIPCallIDHeader()

	{

	delete iCallID;

	}

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

// CSIPCallIDHeader::CloneL

// From CSIPHeaderBase:

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

//

EXPORT_C CSIPHeaderBase* CSIPCallIDHeader::CloneL () const

	{

	CSIPCallIDHeader* clone = new(ELeave)CSIPCallIDHeader;

	CleanupStack::PushL(clone);

	clone->iCallID = iCallID->AllocL();

	CleanupStack::Pop(clone);

	return clone;

	}

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

// CSIPCallIDHeader::operator==

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

//

EXPORT_C TBool 

CSIPCallIDHeader::operator==(const CSIPCallIDHeader& aCallIDHeader)

	{

	return (iCallID->Compare(*(aCallIDHeader.iCallID)) == 0);

	}

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

// CSIPCSeqHeader::InternalizeValueL

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

//

EXPORT_C CSIPHeaderBase* 

CSIPCallIDHeader::InternalizeValueL (RReadStream& aReadStream)

	{

	CSIPCallIDHeader* self = new(ELeave)CSIPCallIDHeader;

	CleanupStack::PushL(self);

	self->iCallID = SIPCodecUtils::ReadDescFromStreamL(aReadStream);

	CleanupStack::Pop(self);

	return self;

	}	

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

// CSIPCallIDHeader::Name

// From CSIPHeaderBase:

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

//

EXPORT_C RStringF CSIPCallIDHeader::Name() const

	{

	return SIPStrings::StringF(SipStrConsts::ECallIDHeader);

	}

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

// CSIPCallIDHeader::HasCompactName

// From CSIPHeaderBase:

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

//

TBool CSIPCallIDHeader::HasCompactName () const

	{

	return ETrue;

	}

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

// CSIPCallIDHeader::CompactName

// From CSIPHeaderBase:

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

//

RStringF CSIPCallIDHeader::CompactName () const

	{

	return SIPStrings::StringF(SipStrConsts::ECallIDHeaderCompact);

	}

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

// CSIPCallIDHeader::ToTextValueL

// From CSIPHeaderBase:

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

//

EXPORT_C HBufC8* CSIPCallIDHeader::ToTextValueL () const

	{

	return iCallID->AllocL();

	}

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

// CSIPCallIDHeader::PreferredPlaceInMessage

// From CSIPHeaderBase:

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

//

CSIPHeaderBase::TPreferredPlace

CSIPCallIDHeader::PreferredPlaceInMessage () const

	{

	return CSIPHeaderBase::EMiddle;

	}

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

// CSIPCallIDHeader::BaseDecodeL

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

//

RPointerArray<CSIPHeaderBase> 

CSIPCallIDHeader::BaseDecodeL (const TDesC8& aValue)

	{

	CSIPCallIDHeader* header = DecodeL(aValue);

	CleanupStack::PushL(header);

	RPointerArray<CSIPHeaderBase> headers;

	User::LeaveIfError (headers.Append(header));

	CleanupStack::Pop(header);

	return headers;	

	}	

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

// CSIPCSeqHeader::ExternalizeValueL

// From CSIPHeaderBase:

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

//

void CSIPCallIDHeader::ExternalizeValueL (RWriteStream& aWriteStream) const

	{

	aWriteStream.WriteUint32L(iCallID->Length());

	aWriteStream.WriteL(*iCallID);

	}

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

// CSIPCallIDHeader::ParseL

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

//

void CSIPCallIDHeader::ParseL (const TDesC8& aValue)

	{

	__ASSERT_ALWAYS (aValue.Length() > 0, 

		User::Leave(KErrSipCodecCallIdHeader));

    TLex8 lex(aValue);

    TPtrC8 value(lex.NextToken());

    lex.SkipSpace();

    if (lex.Remainder().Length() > 0) 

		{

		User::Leave(KErrSipCodecCallIdHeader);

		}

	TInt atPos = value.Locate('@');

	if (atPos == 0 || atPos == value.Length()-1)

		{

		User::Leave(KErrSipCodecCallIdHeader);

		}

	if (atPos < 0) // word

		{

		if (!SIPSyntaxCheck::Word(value))

			{

			User::Leave(KErrSipCodecCallIdHeader);

			}

		}

	else // word@word

		{

		if (!SIPSyntaxCheck::Word(value.Left(atPos)))

			{

			User::Leave(KErrSipCodecCallIdHeader);

			}

		if (!SIPSyntaxCheck::Word(value.Mid(atPos+1)))

			{

			User::Leave(KErrSipCodecCallIdHeader);

			}

		}

	}