/*

* Copyright (c) 2002-2005 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: The class handles IMPS Setting file reading.

*

*

*/

// INCLUDE FILES

#include    <e32std.h>

#ifdef _DEBUG

#include    <flogger.h>

#endif

#include "ParserUtils.h"

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

//**********************************

// CImpsSettingFile

//**********************************

CImpsSettingFile* CImpsSettingFile::NewL(

    RFs& aFs )

    {

    CImpsSettingFile* self = new ( ELeave ) CImpsSettingFile( aFs );

    return self;

    }

CImpsSettingFile::~CImpsSettingFile()

    {

    if ( iOpen )

        {

        iReader.Close();

        }

    iOpen = EFalse;

    }

CImpsSettingFile::CImpsSettingFile( RFs& aFs )

        : iFs( aFs ),

        iOpen( EFalse )

    {

    }

void CImpsSettingFile::OpenL( TDesC& aResFile )

    {

    // open a file

    iFileName = aResFile;

    TInt myError = iReader.Open( iFs,

                                 iFileName,

                                 EFileShareReadersOnly );

    User::LeaveIfError( myError );

    iOpen = ETrue;

    }

TPtrC8 CImpsSettingFile::KeyValueL( const TDesC8& aKey )

    {

    TPtrC8 myKey;

    TPtrC8 myValue;

    TBool getIt( EFalse );

    TInt err = 0;

    // Reset the reader

    OpenL( iFileName );

    // Start to search

    while ( !getIt )

        {

        TRAP ( err, ReadRowL( myKey, myValue ) );

        if ( err != KErrNone )

            {

            User::Leave( KErrNotFound );

            }

        if ( !myKey.CompareF( aKey ) )

            {

            return myValue;

            }

        }

    return TPtrC8();

    }

void CImpsSettingFile::ReadRowL( TPtrC8& aKey, TPtrC8& aValue )

    {

    // READ ONE ROW

    TChar delim( 10 );

    iReader.ReadL( iRowBuffer, delim );

    TInt length = iRowBuffer.Length();

    if ( length > 2 )

        {

        // DROP CR+LF FROM THE END OF LINE

        iRowBuffer.Delete( length - 2, 2 );

        TInt pos = 0;

        pos = iRowBuffer.Find( _L8( "=" ) );

        if ( pos > 0 )

            {

            aKey.Set( iRowBuffer.Left( pos ) );

            // Cut off separator

            aValue.Set( iRowBuffer.Mid( pos + 1 ) );

            }

        }

    }

//  End of File