/*

* Copyright (c) 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:

*

*/

using System;

using System.Collections.Generic;

using System.Text;

using System.Text.RegularExpressions;

using System.Reflection;

using SymbianParserLib.Enums;

using SymbianParserLib.Elements;

using SymbianParserLib.Elements.SubFields;

namespace SymbianParserLib.RegExTranslators

{

    internal abstract class RegExTranslatorBase

    {

        #region Constructors

        public RegExTranslatorBase()

        {

        }

        #endregion

        #region API

        public abstract ParserField Process( Capture aCapture, int aStartAt, ParserLine aLine );

        #endregion

        #region Properties

        #endregion

        #region Internal methods

        protected ParserField CreateField( string aRegEx, string aFieldName, TParserValueType aValueType, int aCapturePos, int aCaptureLength )

        {

            ParserField ret = CreateField( aRegEx, aFieldName, aValueType, aCapturePos, aCaptureLength, true );

            return ret;

        }

        protected ParserField CreateField( string aRegEx, string aFieldName, TParserValueType aValueType, int aCapturePos, int aCaptureLength, bool aRequiresNumberedCaptureGroup )

        {

            string fieldName = CompressName( aFieldName );

            ParserField ret = new ParserField( fieldName );

            // Update format specifier

            ParserFieldFormatSpecifier formatSpecifier = ret.FormatSpecifier;

            formatSpecifier.OriginalLocation = aCapturePos;

            formatSpecifier.OriginalLength = aCaptureLength;

            // Surround in numbered group if needed...

            StringBuilder finalRegEx = new StringBuilder( aRegEx );

            if ( aRequiresNumberedCaptureGroup )

            {

                finalRegEx.Insert( 0, "(" );

                finalRegEx.Append( ")" );

            }

            formatSpecifier.RegularExpressionString = finalRegEx.ToString();

            formatSpecifier.ExpectedType = aValueType;

            return ret;

        }

        private static string CompressName( string aUncompressedFieldName )

        {

            Regex spaces = new Regex(@"\s+");

            string[] fields = spaces.Split( aUncompressedFieldName );

            //

            StringBuilder ret = new StringBuilder();

            foreach ( string field in fields )

            {

                ret.Append( field );

            }

            //

            return ret.ToString();

        }

        #endregion

        #region Internal constants

        #endregion

        #region From System.Object

        public override string ToString()

        {

            return base.ToString();

        }

        #endregion

        #region Data members

        #endregion

    }

}