class/System.XML/System.Xml/XmlXapResolver.cs

   1 //
   2 // XmlXapResolver.cs
   3 //
   4 // Author:
   5 //   Atsushi Enomoto (atsushi@ximian.com)
   6 //
   7 // (C) 2009 Novell Inc.
   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.IO;
  32 using System.Reflection;
  33
  34 #if !MONOTOUCH
  35 namespace System.Xml
  36 {
  37         public class XmlXapResolver : XmlResolver
  38         {
  39                 static readonly MethodInfo method;
  40                 static readonly PropertyInfo property;
  41                 static XmlXapResolver ()
  42                 {
  43                         var at = Type.GetType ("System.Windows.Application, System.Windows, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e", true);
  44                         method = at.GetMethod ("GetResourceStream", new Type [] {typeof (Uri)});
  45                         var rt = Type.GetType ("System.Windows.Resources.StreamResourceInfo, System.Windows, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e", true);
  46                         property = rt.GetProperty ("Stream");
  47                 }
  48
  49                 public override object GetEntity (Uri absoluteUri, string role, Type ofObjectToReturn)
  50                 {
  51                         if (absoluteUri == null)
  52                                 throw new ArgumentNullException ("absoluteUri");
  53                         if (absoluteUri.IsAbsoluteUri)
  54                                 throw new XmlException ("URI must be relative to the application XAP");
  55                         if (!SupportsType (absoluteUri, ofObjectToReturn))
  56                                 throw new XmlException (String.Format ("Unsupported entity type '{0}'", ofObjectToReturn.GetType ()));
  57
  58                         try {
  59                                 var sri = method.Invoke (null, new object [] {absoluteUri});
  60                                 if (sri == null)
  61                                         throw new XmlException (String.Format ("Resource '{0}' not found", absoluteUri));
  62                                 return property.GetValue (sri, new object [0]);
  63                         } catch (TargetInvocationException tie) {
  64                                 // throw the original exception
  65                                 throw tie.InnerException;
  66                         }
  67                 }
  68         }
  69 }
  70 #endif