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 namespace System.Runtime.Versioning {
  30
  31         public static class VersioningHelper {
  32
  33                 static private int GetDomainId ()
  34                 {
  35 #if NET_2_1
  36                         return 0;
  37 #else
  38                         return AppDomain.CurrentDomain.Id;
  39 #endif
  40                 }
  41
  42                 static private int GetProcessId ()
  43                 {
  44                         // TODO - System.Diagnostics.Process class is located in System.dll
  45                         return 0;
  46                 }
  47
  48                 static string SafeName (string name, bool process, bool appdomain)
  49                 {
  50                         if (process && appdomain) {
  51                                 return String.Concat (name, "_", GetProcessId ().ToString (),
  52                                         "_", GetDomainId ().ToString ());
  53                         } else if (process) {
  54                                 return String.Concat (name, "_", GetProcessId ().ToString ());
  55                         } else if (appdomain) {
  56                                 return String.Concat (name, "_", GetDomainId ().ToString ());
  57                         }
  58                         // nothing, return original string
  59                         return name;
  60                 }
  61
  62                 static private string ConvertFromMachine (string name, ResourceScope to, Type type)
  63                 {
  64                         switch (to) {
  65                         case ResourceScope.Machine:
  66                                 return SafeName (name, false, false);
  67                         case ResourceScope.Process:
  68                                 return SafeName (name, true, false);
  69                         case ResourceScope.AppDomain:
  70                                 return SafeName (name, true, true);
  71                         default:
  72                                 throw new ArgumentException ("to");
  73                         }
  74                 }
  75
  76                 static private string ConvertFromProcess (string name, ResourceScope to, Type type)
  77                 {
  78                         if ((to < ResourceScope.Process) || (to >= ResourceScope.Private))
  79                                 throw new ArgumentException ("to");
  80                         bool ad = ((to & ResourceScope.AppDomain) == ResourceScope.AppDomain);
  81                         return SafeName (name, false, ad);
  82                 }
  83
  84                 static private string ConvertFromAppDomain (string name, ResourceScope to, Type type)
  85                 {
  86                         if ((to < ResourceScope.AppDomain) || (to >= ResourceScope.Private))
  87                                 throw new ArgumentException ("to");
  88                         return SafeName (name, false, false);
  89                 }
  90
  91                 [MonoTODO ("process id is always 0")]
  92                 static public string MakeVersionSafeName (string name, ResourceScope from, ResourceScope to)
  93                 {
  94                         return MakeVersionSafeName (name, from, to, null);
  95                 }
  96
  97                 [MonoTODO ("type?")]
  98                 static public string MakeVersionSafeName (string name, ResourceScope from, ResourceScope to, Type type)
  99                 {
 100                         if ((from & ResourceScope.Private) != 0) {
 101                                 to &= ~(ResourceScope.Private | ResourceScope.Assembly);
 102                         } else if ((from & ResourceScope.Assembly) != 0) {
 103                                 to &= ~ResourceScope.Assembly;
 104                         }
 105
 106                         string result = (name == null) ? String.Empty : name;
 107                         switch (from) {
 108                         case ResourceScope.Machine:
 109                         case ResourceScope.Machine | ResourceScope.Private:
 110                         case ResourceScope.Machine | ResourceScope.Assembly:
 111                                 return ConvertFromMachine (result, to, type);
 112                         case ResourceScope.Process:
 113                         case ResourceScope.Process | ResourceScope.Private:
 114                         case ResourceScope.Process | ResourceScope.Assembly:
 115                                 return ConvertFromProcess (result, to, type);
 116                         case ResourceScope.AppDomain:
 117                         case ResourceScope.AppDomain | ResourceScope.Private:
 118                         case ResourceScope.AppDomain | ResourceScope.Assembly:
 119                                 return ConvertFromAppDomain (result, to, type);
 120                         default:
 121                                 throw new ArgumentException ("from");
 122                         }
 123                 }
 124         }
 125 }