/*

* 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 AsyncTextReaderPrefix

	{

		#region Construct & destruct

		public AsyncTextReaderPrefix()

		:	this( string.Empty )

		{

		}

		public AsyncTextReaderPrefix( string aMsgPrefix )

		:   this( aMsgPrefix, string.Empty )

		{

		}

		public AsyncTextReaderPrefix( string aMsgPrefix, string aMsgPostfix )

		{

			iMsgPrefix = aMsgPrefix;

			iMsgPostfix = aMsgPostfix;

		}

		#endregion

		#region Properties

		public string MsgPrefix

		{

			get { return iMsgPrefix; }

		}

		public string MsgPostfix

		{

			get { return iMsgPostfix; }

		}

		#endregion

		#region Internal API

		internal void Clean( ref string aLine )

		{

			if ( MsgPrefix.Length > 0 )

			{

				int pos = aLine.IndexOf( MsgPrefix );

				if ( pos >= 0 )

				{

					pos += MsgPrefix.Length;

					aLine = aLine.Substring( pos );

				}

				else

				{

					aLine = string.Empty;

				}

			}

			//

			if ( MsgPostfix.Length > 0 )

			{

				int pos = aLine.LastIndexOf( MsgPostfix );

				if ( pos >= 0 )

				{

					pos -= MsgPostfix.Length;

					aLine = aLine.Substring( 0, pos - 1 );

				}

				else

				{

					aLine = string.Empty;

				}

			}

		}

		#endregion

		#region Data members

		private readonly string iMsgPrefix;

		private readonly string iMsgPostfix;

		#endregion

	}

}