mcs/class/corlib/System.Runtime.Versioning/VersioningHelper.cs

   1 //
   2 // System.Runtime.Versioning.VersioningHelper class
   3 //
   4 // Authors
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 namespace System.Runtime.Versioning {
  32
  33         public static class VersioningHelper {
  34
  35                 static private int GetProcessId ()
  36                 {
  37                         // TODO - System.Diagnostics.Process class is located in System.dll
  38                         return 0;
  39                 }
  40
  41                 static string SafeName (string name, bool process, bool appdomain)
  42                 {
  43                         if (process && appdomain) {
  44                                 return String.Concat (name, "_", GetProcessId ().ToString (),
  45                                         "_", AppDomain.CurrentDomain.Id.ToString ());
  46                         } else if (process) {
  47                                 return String.Concat (name, "_", GetProcessId ().ToString ());
  48                         } else if (appdomain) {
  49                                 return String.Concat (name, "_", AppDomain.CurrentDomain.Id.ToString ());
  50                         }
  51                         // nothing, return original string
  52                         return name;
  53                 }
  54
  55                 static private string ConvertFromMachine (string name, ResourceScope to, Type type)
  56                 {
  57                         switch (to) {
  58                         case ResourceScope.Machine:
  59                                 return SafeName (name, false, false);
  60                         case ResourceScope.Process:
  61                                 return SafeName (name, true, false);
  62                         case ResourceScope.AppDomain:
  63                                 return SafeName (name, true, true);
  64                         default:
  65                                 throw new ArgumentException ("to");
  66                         }
  67                 }
  68
  69                 static private string ConvertFromProcess (string name, ResourceScope to, Type type)
  70                 {
  71                         if ((to < ResourceScope.Process) || (to >= ResourceScope.Private))
  72                                 throw new ArgumentException ("to");
  73                         bool ad = ((to & ResourceScope.AppDomain) == ResourceScope.AppDomain);
  74                         return SafeName (name, false, ad);
  75                 }
  76
  77                 static private string ConvertFromAppDomain (string name, ResourceScope to, Type type)
  78                 {
  79                         if ((to < ResourceScope.AppDomain) || (to >= ResourceScope.Private))
  80                                 throw new ArgumentException ("to");
  81                         return SafeName (name, false, false);
  82                 }
  83
  84                 [MonoTODO ("process id is always 0")]
  85                 static public string MakeVersionSafeName (string name, ResourceScope from, ResourceScope to)
  86                 {
  87                         return MakeVersionSafeName (name, from, to, null);
  88                 }
  89
  90                 [MonoTODO ("type?")]
  91                 static public string MakeVersionSafeName (string name, ResourceScope from, ResourceScope to, Type type)
  92                 {
  93                         if ((from & ResourceScope.Private) != 0) {
  94                                 to &= ~(ResourceScope.Private | ResourceScope.Assembly);
  95                         } else if ((from & ResourceScope.Assembly) != 0) {
  96                                 to &= ~ResourceScope.Assembly;
  97                         }
  98
  99                         string result = (name == null) ? String.Empty : name;
 100                         switch (from) {
 101                         case ResourceScope.Machine:
 102                         case ResourceScope.Machine | ResourceScope.Private:
 103                         case ResourceScope.Machine | ResourceScope.Assembly:
 104                                 return ConvertFromMachine (result, to, type);
 105                         case ResourceScope.Process:
 106                         case ResourceScope.Process | ResourceScope.Private:
 107                         case ResourceScope.Process | ResourceScope.Assembly:
 108                                 return ConvertFromProcess (result, to, type);
 109                         case ResourceScope.AppDomain:
 110                         case ResourceScope.AppDomain | ResourceScope.Private:
 111                         case ResourceScope.AppDomain | ResourceScope.Assembly:
 112                                 return ConvertFromAppDomain (result, to, type);
 113                         default:
 114                                 throw new ArgumentException ("from");
 115                         }
 116                 }
 117         }
 118 }
 119
 120 #endif