1 // System.Xml.XmlUrlResolver.cs
3 // Author: Duncan Mak (duncan@ximian.com)
4 // Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 public class XmlUrlResolver
: XmlResolver
39 public XmlUrlResolver ()
45 public override object GetEntity (Uri absoluteUri
, string role
, Type ofObjectToReturn
)
47 if (ofObjectToReturn
== null)
48 ofObjectToReturn
= typeof (Stream
);
49 if (ofObjectToReturn
!= typeof (Stream
))
50 throw new XmlException ("This object type is not supported.");
52 if (!absoluteUri
.IsAbsoluteUri
)
53 throw new ArgumentException ("uri must be absolute.", "absoluteUri");
55 if (absoluteUri
.Scheme
== "file") {
56 if (absoluteUri
.AbsolutePath
== String
.Empty
)
57 throw new ArgumentException ("uri must be absolute.", "absoluteUri");
58 return new FileStream (UnescapeRelativeUriBody (absoluteUri
.LocalPath
), FileMode
.Open
, FileAccess
.Read
, FileShare
.Read
);
61 // (MS documentation says) parameter role isn't used yet.
62 //WebRequest req = WebRequest.Create (absoluteUri);
63 //return req.GetResponse().GetResponseStream();
68 public override Uri
ResolveUri (Uri baseUri
, string relativeUri
)
70 return base.ResolveUri (baseUri
, relativeUri
);
73 // see also XmlResolver.EscapeRelativeUriBody().
74 private string UnescapeRelativeUriBody (string src
)
76 return src
.Replace ("%3C", "<")
79 .Replace ("%22", "\"")
81 .Replace ("%25", "%");