/*

* Copyright (c) 2008 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:  Parser for emergency numbers.

*

*/

// INCLUDE FILES

// CONSTANTS

// ============================ MEMBER FUNCTIONS ===============================

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

// CPhoneVoipNumberParser::CPhoneVoipNumberParser

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

//

CPhoneVoipNumberParser::CPhoneVoipNumberParser()

    {

    }

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

// CPhoneVoipNumberParser::NewLC

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

//

CPhoneVoipNumberParser* CPhoneVoipNumberParser::NewLC()

    {

    CPhoneVoipNumberParser* self = 

        new ( ELeave ) CPhoneVoipNumberParser;

    CleanupStack::PushL( self );

    return self;

    }

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

// CPhoneVoipNumberParser::ParseL

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

//

TBool CPhoneVoipNumberParser::ParseL( 

        const TDesC& aString,

        CPhoneGsmParserResult& aResult,

        CPhoneGsmOptionContainerBase& aOptions )

    {

    aResult.ClearL();

    TBool result = DoParseL( 

            aString,

            aResult,

            static_cast<CPhoneGsmOptionContainer&>( aOptions ) );

    if ( !result )

        {

        aResult.ClearL();

        }

    return result;

    }

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

// CPhoneVoipNumberParser::DoParseL

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

//

TBool CPhoneVoipNumberParser::DoParseL( 

        const TDesC& aString,

        CPhoneGsmParserResult& aResult,

        CPhoneGsmOptionContainer& aOptions )

    {

    TBool result( EFalse );

    if ( aOptions.FindOptionStatus( KPhoneOptionSend ) )

        {

        if ( aOptions.FindOptionStatus( KPhoneOptionVoipCall ) &&

             aString.Length() )

            {

            TLex input( aString );

            // Take number part and put it to first parameter of the aResult.

            TakeNumberPartL( input, aResult );       

            // Take rest of string( postfix part ) to next parameter of the result.

            TakeDtmfPostfixL( input, aResult );

            aResult.SetUid( KPhoneUidVoipNumber );

            result = ETrue;

            }

        }

    return result;

    }

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

// CPhoneVoipNumberParser::TakeNumberPartL

// 

// Take the main part of the phone number and add it to result.

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

//

void CPhoneVoipNumberParser::TakeNumberPartL(

        TLex& aLex,

        CPhoneGsmParserResult& aResult )

    {

    TLexMark start;

    aLex.Mark( start );

    TBool allDigits = ETrue;

    TBool dtmfFound = EFalse;

    while ( !aLex.Eos() &&

            !dtmfFound )

        {

        TChar nextChar = aLex.Peek().GetLowerCase();

        if ( allDigits &&

            ( KPhoneDtmfPause == nextChar ||

              KPhoneDtmfWait == nextChar ||

              KPhonePlus == nextChar ) )

            {

            // Dtmf string is always postfixed if present

            if ( aLex.Offset() > 0 )

                {

                // Check if rest of the string is valid dtmf string

                TPtrC remainder( aLex.Remainder() );

                if ( IsValidDtmfString( remainder ) )

                    {

                    dtmfFound = ETrue;     

                    }

                }

            }

        if ( !dtmfFound )

            {

                {

                allDigits = EFalse;

                }

            aLex.Inc();

            }

        }

    // Add main part of the number to the parsing result

    TPtrC mainpart( aLex.MarkedToken( start ) );

    aResult.AddParameterL( mainpart );   

    }

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

// CPhoneVoipNumberParser::TakeDtmfPostfixL

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

//

void CPhoneVoipNumberParser::TakeDtmfPostfixL(

        TLex& aLex,

        CPhoneGsmParserResult& aResult )

    {

    // Add rest of string( after TLex16::iNext ) to result.

    aResult.AddParameterL( aLex.Remainder() );

    }

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

// CPhoneVoipNumberParser::IsValidDtmfString

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

//

TBool CPhoneVoipNumberParser::IsValidDtmfString( TPtrC& aString )

    { 

    TBool validDtmf = ETrue;

    // Check that string contains only valid dtmf characters

    for( TInt i = 0; i < aString.Length(); i++ )

        {

        if ( KErrNotFound == KValidDtmfChars().Locate( aString[i] ) )

            {

            validDtmf = EFalse;

            break;

            }      

        }

    return validDtmf;

    }

//  End of File