mcs/class/System.Web/System.Web.Util/WebTrace.cs

   1 //
   2 // System.Web.Util.WebTrace
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2002 Ximian, Inc (http://www.ximian.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Collections;
  32 using System.Diagnostics;
  33
  34 namespace System.Web.Util
  35 {
  36         internal class WebTrace
  37         {
  38                 static Stack ctxStack;
  39                 static bool trace;
  40
  41                 static WebTrace ()
  42                 {
  43                         ctxStack = new Stack ();
  44                 }
  45
  46                 [Conditional("WEBTRACE")]
  47                 static public void PushContext (string context)
  48                 {
  49                         ctxStack.Push (context);
  50                         Trace.Indent ();
  51                 }
  52
  53                 [Conditional("WEBTRACE")]
  54                 static public void PopContext ()
  55                 {
  56                         if (ctxStack.Count == 0)
  57                                 return;
  58
  59                         Trace.Unindent ();
  60                         ctxStack.Pop ();
  61                 }
  62
  63                 static public string Context
  64                 {
  65                         get {
  66                                 if (ctxStack.Count == 0)
  67                                         return "No context";
  68
  69                                 return (string) ctxStack.Peek ();
  70                         }
  71                 }
  72
  73                 static public bool StackTrace
  74                 {
  75                         get { return trace; }
  76
  77                         set { trace = value; }
  78                 }
  79
  80                 [Conditional("WEBTRACE")]
  81                 static public void WriteLine (string msg)
  82                 {
  83                         Trace.WriteLine (Format (msg));
  84                 }
  85
  86                 [Conditional("WEBTRACE")]
  87                 static public void WriteLine (string msg, object arg)
  88                 {
  89                         Trace.WriteLine (Format (String.Format (msg, arg)));
  90                 }
  91
  92                 [Conditional("WEBTRACE")]
  93                 static public void WriteLine (string msg, object arg1, object arg2)
  94                 {
  95                         Trace.WriteLine (Format (String.Format (msg, arg1, arg2)));
  96                 }
  97
  98                 [Conditional("WEBTRACE")]
  99                 static public void WriteLine (string msg, object arg1, object arg2, object arg3)
 100                 {
 101                         Trace.WriteLine (Format (String.Format (msg, arg1, arg2, arg3)));
 102                 }
 103
 104                 [Conditional("WEBTRACE")]
 105                 static public void WriteLine (string msg, params object [] args)
 106                 {
 107                         Trace.WriteLine (Format (String.Format (msg, args)));
 108                 }
 109
 110                 static string Format (string msg)
 111                 {
 112                         if (trace)
 113                                 return String.Format ("{0}: {1}\n{2}", Context, msg, Environment.StackTrace);
 114                         else
 115                                 return String.Format ("{0}: {1}", Context, msg);
 116                 }
 117         }
 118 }
 119