1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 * 

    14 * Description:

    15 *

    16 */

    17 using System;

    18 using System.IO;

    19 using System.Text;

    20 

    21 namespace SymbianUtils

    22 {

    23 	public class TracePrefixAnalyser

    24 	{

    25 		#region Constructors

    26 		public TracePrefixAnalyser()

    27 		{

    28 		}

    29 		#endregion

    30 

    31 		#region API

    32 		public bool CleanLine( ref string aLine )

    33 		{

    34 			bool matched = false;

    35 			string prefix = IdentifyTracePrefixFromLine( aLine );

    36 			//

    37 			if	( prefix.Length > 0 )

    38 			{

    39 				int prefixPos = aLine.IndexOf( prefix );

    40 				aLine = aLine.Substring( prefixPos + prefix.Length );

    41 				matched = true;

    42 			}

    43 			//

    44 			return matched;

    45 		}

    46 

    47 		public StringBuilder CleanFile( string aFileName )

    48 		{

    49 			StringBuilder lines = new StringBuilder();

    50 			//

    51 			using( StreamReader reader = new StreamReader( aFileName ) )

    52 			{

    53 				string line = reader.ReadLine();

    54 				while( line != null )

    55 				{

    56 					CleanLine( ref line );

    57 					lines.Append( line + System.Environment.NewLine );

    58 					//

    59 					line = reader.ReadLine();

    60 				}

    61 			}

    62 			//

    63 			return lines;

    64 		}

    65 

    66 		public string IdentifyTracePrefixFromLine( string aLine )

    67 		{

    68 			string prefix = string.Empty;

    69 			//

    70             if ( aLine.IndexOf( KFinalPrefix ) >= 0 )

    71             {

    72                 prefix = KFinalPrefix;

    73             }

    74 			//

    75 			return prefix;

    76 		}

    77 

    78 		public string IdentifyTracePrefix( string aFileName )

    79 		{

    80 			string prefix = string.Empty;

    81 			//

    82 			try

    83 			{

    84 				using( StreamReader reader = new StreamReader( aFileName ) )

    85 				{

    86 					int lineCounter = 0;

    87 					string line = string.Empty;

    88 					//

    89 					while( lineCounter < KNumberOfLinesToCheck && line != null )

    90 					{

    91 						try

    92 						{

    93 							line = reader.ReadLine();

    94 							//

    95                             if ( line != null )

    96                             {

    97                                 string tmp = IdentifyTracePrefixFromLine( line );

    98                                 if ( tmp.Length > 0 )

    99                                 {

   100                                     prefix = tmp;

   101                                     break;

   102                                 }

   103                             }

   104 						}

   105 						catch(Exception)

   106 						{

   107 							line = null;

   108 						}

   109                         //

   110                         ++lineCounter;

   111 					}

   112 				}

   113 			}

   114 			catch( Exception )

   115 			{

   116 			}

   117 			//

   118 			return prefix;

   119 		}

   120 		#endregion

   121 

   122 		#region Internal constants

   123 		private const int KNumberOfLinesToCheck = 500;

   124 		#endregion

   125 

   126 		#region Data members

   127 		private const int KLineLookAheadCount = 200;

   128 		private const string KFinalPrefix = "msg:";

   129 		#endregion

   130 	}

   131 }