--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianUtils/TextUtilities/Readers/Filters/AsyncTextReaderFilter.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,148 @@
+/*
+* 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.IO;
+using System.Text;
+using System.Threading;
+using System.Collections;
+
+namespace SymbianUtils
+{
+	public class AsyncTextReaderFilter
+	{
+		#region Enumerations
+		public enum TSpecificMatchType
+		{
+			ESpecificMustMatch = 0,
+			ESpecificMustNotMatch
+		}
+
+		public enum TRemoveType
+		{
+			ERemoveNothing = 0,
+			ERemoveAllInstances,
+			ERemoveLastInstanceOnwards,
+			ERemoveLastInstanceStartingAtPreviousSpaceOnwards
+		}
+		#endregion
+
+		#region Construct & destruct
+		public AsyncTextReaderFilter( string aMatchString )
+			:   this( aMatchString, TRemoveType.ERemoveAllInstances )
+		{
+		}
+
+		public AsyncTextReaderFilter( string aMatchString, TRemoveType aRemoveType )
+			:	this( aMatchString, aRemoveType, TSpecificMatchType.ESpecificMustMatch )
+		{
+		}
+
+		public AsyncTextReaderFilter( string aMatchString, TRemoveType aRemoveType, TSpecificMatchType aMatchType )
+		{
+			iMatchString = aMatchString;
+			iRemoveType = aRemoveType;
+			iMatchType = aMatchType;
+		}
+		#endregion
+
+		#region Properties
+		public string MatchString
+		{
+			get { return iMatchString; }
+			set { iMatchString = value; }
+		}
+
+		public TRemoveType RemoveType
+		{
+			get { return iRemoveType; }
+			set { iRemoveType = value; }
+		}
+
+		public TSpecificMatchType MatchType
+		{
+			get { return iMatchType; }
+			set { iMatchType = value; }
+		}
+		#endregion
+
+		#region Internal API
+		internal bool Matches( string aLine )
+		{
+			int index = aLine.IndexOf( MatchString );
+			//
+			bool matchedFilter = false;
+			if	( index >= 0 )
+			{
+				matchedFilter = ( MatchType == TSpecificMatchType.ESpecificMustMatch );
+			}
+			else if ( index < 0 )
+			{
+				matchedFilter = ( MatchType == TSpecificMatchType.ESpecificMustNotMatch );
+			}
+			//
+			return matchedFilter;
+		}
+
+		internal void Process( ref string aLine )
+		{
+			int index = aLine.IndexOf( MatchString );
+			//
+			if	( index >= 0 )
+			{
+				switch( RemoveType )
+				{
+					default:
+					case TRemoveType.ERemoveNothing:
+					{
+						break;
+					}
+					case TRemoveType.ERemoveAllInstances:
+					{
+						aLine = aLine.Replace( MatchString, "" );
+						break;
+					}
+					case TRemoveType.ERemoveLastInstanceOnwards:
+					{
+						index = aLine.LastIndexOf( MatchString );
+						aLine = aLine.Substring( 0, index );
+						break;
+					}
+					case TRemoveType.ERemoveLastInstanceStartingAtPreviousSpaceOnwards:
+					{
+						int lastSpacePos = aLine.LastIndexOf( ' ', index );
+						if	( lastSpacePos < index )
+						{
+							aLine = aLine.Substring( 0, lastSpacePos );
+						}
+						else
+						{
+							aLine = aLine.Substring( 0, index );
+						}
+						break;
+					}
+				}
+			}
+		}
+		#endregion
+
+		#region Data members
+		private string iMatchString = string.Empty;
+		private TRemoveType iRemoveType = TRemoveType.ERemoveLastInstanceOnwards;
+		private TSpecificMatchType iMatchType = TSpecificMatchType.ESpecificMustMatch;
+		#endregion
+	}
+}