// 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          : SIPStrings.cpp

// Part of       : SIP Codec

// Version       : SIP/4.0 

//

#include "sipstrings.h"

#include "CSIPCodecTlsPtrs.h"

#include "CSIPStrings.h"

#include "sipstrconsts.h"

#include "_sipcodecdefs.h"

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

// SIPStrings::OpenL

// Opens stringpool owner, leaves if one already exists in TLS

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

//

EXPORT_C void SIPStrings::OpenL()

	{

	CSIPCodecTlsPtrs* tlsPtrs = static_cast<CSIPCodecTlsPtrs*>( Dll::Tls() );

	if( !tlsPtrs )

		{

		CSIPStrings* strings = CSIPStrings::NewL();

        CleanupStack::PushL( strings );

		tlsPtrs = new(ELeave)CSIPCodecTlsPtrs( strings );

		CleanupStack::Pop( strings );

		CleanupStack::PushL( tlsPtrs );

		User::LeaveIfError( Dll::SetTls( tlsPtrs ) );

		CleanupStack::Pop( tlsPtrs );

		}

	else

		{

		CSIPStrings* strings = tlsPtrs->iStrings;

		// SIPHeaderLookup cannot have created the tls, 

		// since SIPHeaderLookup is depended on SIPStrings		

		__ASSERT_ALWAYS( strings, 

		                User::Panic( KNullDesC, KErrAlreadyExists ));

		strings->IncrementUsageCount();

		}

	}

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

// SIPStrings::Close

// Closes & deletes string pool

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

//

EXPORT_C void SIPStrings::Close()

	{

	CSIPCodecTlsPtrs* tlsPtrs = static_cast<CSIPCodecTlsPtrs*>( Dll::Tls() );

	if ( !tlsPtrs )

        {

        return;

        }

    CSIPStrings* strings = tlsPtrs->iStrings;

    // SIPStrings must be always Closed after SIPHeaderLookup,

    // since SIPHeaderLookup depends on SIPStrings

 	__ASSERT_ALWAYS( strings, User::Panic( KNullDesC, KErrNotFound ));

    strings->DecrementUsageCount();

    if ( strings->UsageCount() == 0 )

    	{ 

		if ( !tlsPtrs->iHeaderLookup )

			{

			delete tlsPtrs;

			Dll::FreeTls();

			}

		else

			{

			tlsPtrs->DestroyStrings();

			}

    	}

	}

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

// SIPStrings::StringF

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

//

EXPORT_C RStringF SIPStrings::StringF( TInt aIndex )

	{

	CSIPStrings* strings = Strings();	              	

	return strings->Pool().StringF( aIndex, strings->Table() );

	}

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

// SIPStrings::StringPool

// Returns string pool

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

//

EXPORT_C RStringPool SIPStrings::Pool()

    {

	return Strings()->Pool();

    }

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

// SIPStrings::StringTableL

// Returns string table

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

//

EXPORT_C const TStringTable& SIPStrings::Table()

    {

	return Strings()->Table();

    }

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

// SIPStrings::Strings

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

//    

CSIPStrings* SIPStrings::Strings()

	{

	CSIPCodecTlsPtrs* tlsPtrs = static_cast<CSIPCodecTlsPtrs*>( Dll::Tls() );	

    __ASSERT_ALWAYS( tlsPtrs, User::Panic( KNullDesC, KErrNotReady ) );	

    CSIPStrings* strings = tlsPtrs->iStrings;

    __ASSERT_ALWAYS( strings, User::Panic( KNullDesC, KErrNotReady ) );

    return strings;

	}