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

   1 //
   2 // System.Web.Util.RuntimeHelpers
   3 //
   4 // Authors:
   5 //      Marek Habersack (mhabersack@novell.com)
   6 //
   7 // (C) 2006-2010 Novell, Inc (http://www.novell.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 using System;
  31 using System.Collections.Generic;
  32 using System.ComponentModel;
  33 using System.Reflection;
  34 using System.Web.Configuration;
  35
  36 namespace System.Web.Util
  37 {
  38         static class RuntimeHelpers
  39         {
  40                 public static bool CaseInsensitive {
  41                         get; private set;
  42                 }
  43
  44                 public static bool DebuggingEnabled {
  45                         get {
  46                                 CompilationSection cs = WebConfigurationManager.GetSection ("system.web/compilation") as CompilationSection;
  47                                 if (cs != null)
  48                                         return cs.Debug;
  49
  50                                 return false;
  51                         }
  52                 }
  53
  54                 public static IEqualityComparer <string> StringEqualityComparer {
  55                         get; private set;
  56                 }
  57
  58                 public static IEqualityComparer <string> StringEqualityComparerCulture {
  59                         get; private set;
  60                 }
  61
  62                 public static bool IsUncShare {
  63                         get; private set;
  64                 }
  65
  66                 public static string MonoVersion {
  67                         get; private set;
  68                 }
  69
  70                 public static bool RunningOnWindows {
  71                         get; private set;
  72                 }
  73
  74                 public static StringComparison StringComparison {
  75                         get; private set;
  76                 }
  77
  78                 public static StringComparison StringComparisonCulture {
  79                         get; private set;
  80                 }
  81
  82                 static RuntimeHelpers ()
  83                 {
  84                         PlatformID pid = Environment.OSVersion.Platform;
  85                         RunningOnWindows = ((int) pid != 128 && pid != PlatformID.Unix && pid != PlatformID.MacOSX);
  86
  87                         if (RunningOnWindows) {
  88                                 CaseInsensitive = true;
  89                                 string appDomainAppPath = AppDomain.CurrentDomain.GetData (".appPath") as string;
  90                                 if (!String.IsNullOrEmpty (appDomainAppPath)) {
  91                                         try {
  92                                                 IsUncShare = new Uri (appDomainAppPath).IsUnc;
  93                                         } catch {
  94                                                 // ignore
  95                                         }
  96                                 }
  97                         } else {
  98                                 string mono_iomap = Environment.GetEnvironmentVariable ("MONO_IOMAP");
  99                                 if (!String.IsNullOrEmpty (mono_iomap)) {
 100                                         if (mono_iomap == "all")
 101                                                 CaseInsensitive = true;
 102                                         else {
 103                                                 string[] parts = mono_iomap.Split (':');
 104                                                 foreach (string p in parts) {
 105                                                         if (p == "all" || p == "case") {
 106                                                                 CaseInsensitive = true;
 107                                                                 break;
 108                                                         }
 109                                                 }
 110                                         }
 111                                 }
 112                         }
 113
 114                         if (CaseInsensitive) {
 115                                 StringEqualityComparer = StringComparer.OrdinalIgnoreCase;
 116                                 StringEqualityComparerCulture = StringComparer.CurrentCultureIgnoreCase;
 117                                 StringComparison = StringComparison.OrdinalIgnoreCase;
 118                                 StringComparisonCulture = StringComparison.CurrentCultureIgnoreCase;
 119                         } else {
 120                                 StringEqualityComparer = StringComparer.Ordinal;
 121                                 StringEqualityComparerCulture = StringComparer.CurrentCulture;
 122                                 StringComparison = StringComparison.Ordinal;
 123                                 StringComparisonCulture = StringComparison.CurrentCulture;
 124                         }
 125
 126                         string monoVersion = null;
 127                         try {
 128                                 Type monoRuntime = Type.GetType ("Mono.Runtime", false);
 129                                 if (monoRuntime != null) {
 130                                         MethodInfo mi = monoRuntime.GetMethod ("GetDisplayName", BindingFlags.Static | BindingFlags.NonPublic);
 131                                         if (mi != null)
 132                                                 monoVersion = mi.Invoke (null, new object [0]) as string;
 133                                 }
 134                         } catch {
 135                                 // ignore
 136                         }
 137
 138                         if (monoVersion == null)
 139                                 monoVersion = Environment.Version.ToString ();
 140
 141                         MonoVersion = monoVersion;
 142                 }
 143         }
 144 }