/*

* 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.Elements;

using SymbianParserLib.Enums;

namespace SymbianParserLib.RegExTranslators.Types

{

    internal class RegExTranslatorHex : RegExTranslatorBase

    {

        #region Constructors

        public RegExTranslatorHex()

        {

        }

        #endregion

        #region API

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

        {

            ParserField ret = null;

            //

            RegExTranslatorExtractionInfo m = new RegExTranslatorExtractionInfo( aLine.OriginalValue, aStartAt );

            //

            if ( m.Success && m.ValueTypeChar == 'X' )

            {

                // Build the regular expression

                StringBuilder regex = new StringBuilder( "[A-Fa-f0-9]" );

                if ( m.Width != RegExTranslatorExtractionInfo.KNoWidthSpecified )

                {

                    // Add specific length suffix

                    regex.Append( "{" );

                    regex.Append( m.Width.ToString() );

                    regex.Append( "}" );

                }

                else

                {

                    // Add "one or more" suffix

                    regex.Append( "+" );

                }

                ret = CreateField( regex.ToString(), m.Name, m.ValueType, m.CapturePos, m.CaptureLength, true );

                ret.FormatSpecifier.NumberBase = m.NumberBase;

            }

            //

            return ret;

        }

        #endregion

        #region Properties

        #endregion

        #region Internal methods

        #endregion

        #region Internal constants

        #endregion

        #region From System.Object

        public override string ToString()

        {

            return base.ToString();

        }

        #endregion

        #region Data members

        /// <summary>

        ///  Regular expression built for C# on: Thu, May 15, 2008, 11:33:33 AM

        ///  Using Expresso Version: 3.0.2766, http://www.ultrapico.com

        ///  

        ///  A description of the regular expression:

        ///  

        ///  %

        ///  [PadChar]: A named capture group. [(?:0| )?]

        ///      Match expression but don't capture it. [0| ], zero or one repetitions

        ///          Select from 2 alternatives

        ///              0

        ///              Space

        ///  [Width]: A named capture group. [[0-9]?]

        ///      Any character in this class: [0-9], zero or one repetitions

        ///  Match expression but don't capture it. [x|X]

        ///      Select from 2 alternatives

        ///          xX

        ///  

        ///

        /// </summary>

        private static Regex KRegEx = new Regex(

              "%(?<PadChar>(?:0| )?)(?<Width>[0-9]?)(?:x|X)",

            RegexOptions.Singleline

            | RegexOptions.CultureInvariant

            | RegexOptions.Compiled

            );

        #endregion

    }

}