/*

* Copyright (c) 2007 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:   

*

*/

#include "tnatfwsettingsparser.h"

#include <badesca.h>

const TUint8 KCharToSeparateAddressAndPort = ':';

const TUint8 KCharToSeparateEComPlugInData = ',';

const TUint KDefaultGranularity = 1;

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

// TNATFWSettingsParser::ParseDataToArrayL

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

//

CDesC8Array* TNATFWSettingsParser::ParseDataToArrayL(

    const TDesC8& aData )

    {

    TInt error = KErrNone;

    TPtrC8 dataPointer;

    TUint nextDataStartIndex( 0 );

    TUint arrayLength = aData.Length();

    CDesC8ArrayFlat* descArray =

        new( ELeave ) CDesC8ArrayFlat( KDefaultGranularity );

    CleanupStack::PushL( descArray );

    for ( TUint i( 0 ); i < arrayLength; i++ )

        {

        if (  KCharToSeparateEComPlugInData == aData[i] )

            {

            dataPointer.Set( aData.Mid( nextDataStartIndex, i - nextDataStartIndex ) );

            if( !dataPointer.Length() )

                {

                error = KErrCorrupt;

                break;

                }

            descArray->AppendL( dataPointer );

            nextDataStartIndex = i + 1;

            }

        if ( i + 1 == arrayLength )

            {

            dataPointer.Set( aData.Mid( nextDataStartIndex, ( i - nextDataStartIndex ) + 1 ) );

            if( !dataPointer.Length() )

                {

                error = KErrCorrupt;

                break;

                }

            descArray->AppendL( dataPointer );

            }

        }

    if ( error )

        {

        descArray->Reset();

        }

    CleanupStack::Pop( descArray );

    return descArray;

    }

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

// TNATFWSettingsParser::ParseAddressL

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

//

HBufC8* TNATFWSettingsParser::ParseAddressL( const TDesC8& aData,

                                          TInt& aPort )

    {

    HBufC8* buffer = ParseAddressLC( aData, aPort );

    CleanupStack::Pop( buffer );

    return buffer;

    }

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

// TNATFWSettingsParser::ParseAddressLC

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

//

HBufC8* TNATFWSettingsParser::ParseAddressLC( const TDesC8& aData,

                                          TInt& aPort )

    {

    HBufC8* buffer;

    TInt result( aData.LocateReverse(

        TChar( KCharToSeparateAddressAndPort ) ) );

    if ( result != KErrNotFound )

        { 

        // result + 1, because we don't care separator character

        if (  KErrNone == TLex8( aData.Mid( result + 1 ) ).Val( aPort ) )

            {

            buffer = aData.Left( result ).AllocLC();

            }

        else

            {

            aPort = 0;

            buffer = aData.AllocLC();

            }

        }

    else

        {

        aPort = 0;

        buffer = aData.AllocLC();

        }

    return buffer;

    }

//End of file