/*

* Copyright (c) 2004-2008 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: 

*

*/

using System;

using System.IO;

using System.Collections.Generic;

using System.Text;

using System.Text.RegularExpressions;

using SymbianStructuresLib.Debug.Symbols;

using SymbianSymbolLib.SourceManagement.Source;

using SymbianSymbolLib.SourceManagement.Provisioning;

using SymbianUtils;

using SymbianUtils.Tracer;

using SymbianUtils.FileTypes;

namespace SLPluginSymbol.Reader

{

	internal class SymbolCreator

	{

		#region Constructors

        public SymbolCreator()

		{

		}

        #endregion

        #region API

        public static BasicSymbol Parse( string aLine )

        {

            BasicSymbol ret = null;

            //

            Match m = KSimpleSymbolRegEx.Match( aLine );

            if ( m.Success )

            {

                BasicSymbol symbol = new BasicSymbol();

                symbol.iAddress = uint.Parse( m.Groups[ "Address" ].Value, System.Globalization.NumberStyles.HexNumber );

                symbol.iSize = uint.Parse( m.Groups[ "Size" ].Value, System.Globalization.NumberStyles.HexNumber );

                string symbolAndObject = m.Groups[ "SymbolAndObject" ].Value;

                ParseSymbolText( symbolAndObject, out symbol.iName, out symbol.iObject );

                ret = symbol;

            }

            //

            return ret;

        }

        public Symbol Parse( string aLine, SymbolCollection aCollection )

		{

            Symbol ret = null;

            //

            BasicSymbol basicSymbol = Parse( aLine );

            if ( basicSymbol != null )

            {

                uint baseAddress = aCollection.BaseAddress;

                uint offsetAddress = basicSymbol.iAddress - baseAddress;

                if ( basicSymbol.iAddress < baseAddress )

                {

                    ret = null;

                }

                else

                {

                    ret = Symbol.New( aCollection );

                    //

                    ret.OffsetAddress = offsetAddress;

                    ret.Size = basicSymbol.iSize;

                    ret.Name = basicSymbol.iName;

                    ret.Object = basicSymbol.iObject;

                    // Make sure it's tagged as coming from a symbol file

                    ret.Source = TSymbolSource.ESourceWasSymbolFile;

                }

            }

			//

            return ret;

		}

        #endregion

        #region Classes

        public class BasicSymbol

        {

            #region Data members

            public uint iAddress = 0;

            public uint iSize = 0;

            public string iName = string.Empty;

            public string iObject = string.Empty;

            #endregion

        }

        #endregion

        #region Internal constants

        private static readonly Regex KSimpleSymbolRegEx = new Regex( "(?<Address>[A-Fa-f0-9]{8}) \\s+ (?<Size>[A-Fa-f0-9]{4,}) \\s+ (?<SymbolAndObject>.+)",

            RegexOptions.CultureInvariant

            | RegexOptions.Compiled

            );

        #endregion

        #region Internal methods

        private static void ParseSymbolText( string aText, out string aName, out string aObject )

		{

			int splitPos = aText.LastIndexOf( ' ' );

			if	( splitPos > 0 )

			{

				aName = aText.Substring( 0, splitPos ).TrimEnd();

				aObject = aText.Substring( splitPos ).TrimStart();

			}

			else

			{

				aName = aText;

                aObject = string.Empty;

			}

		}

		#endregion

	}

}