2 // System.Xml.XmlResolver.cs
5 // Jason Diamond (jason@injektilo.org)
6 // Atsushi Enomoto (atsushi@ximian.com)
8 // (C) 2001 Jason Diamond http://injektilo.org/
9 // Copyright (C) 2004,2009 Novell, Inc (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Security.Permissions;
37 using System.Threading.Tasks;
42 public abstract class XmlResolver
46 public virtual ICredentials Credentials {
47 set { throw new NotImplementedException (); }
50 public abstract ICredentials Credentials { set; }
54 public abstract object GetEntity (Uri absoluteUri, string role, Type ofObjectToReturn);
56 [PermissionSet (SecurityAction.InheritanceDemand, Unrestricted = true)]
57 public virtual Uri ResolveUri (Uri baseUri, string relativeUri)
59 if (baseUri == null) {
60 if (relativeUri == null)
61 throw new ArgumentNullException ("Either baseUri or relativeUri are required.");
63 return new Uri (relativeUri, UriKind.RelativeOrAbsolute);
65 // Don't ignore such case that relativeUri is in fact absolute uri (e.g. ResolveUri (null, "http://foo.com")).
66 int idx = relativeUri.IndexOf (':');
67 if (idx > 0 && Uri.CheckSchemeName (relativeUri.Substring (0, idx)))
68 return new Uri (relativeUri);
70 return new Uri (Path.GetFullPath (relativeUri));
74 if (relativeUri == null)
77 return new Uri (baseUri, EscapeRelativeUriBody (relativeUri));
80 // see also XmlUrlResolver.UnescapeRelativeUriBody().
81 private string EscapeRelativeUriBody (string src)
83 return src.Replace ("<", "%3C")
87 .Replace ("\"", "%22");
89 #if MOONLIGHT || NET_4_5
90 public virtual bool SupportsType (Uri absoluteUri, Type type)
92 if (absoluteUri == null)
93 throw new ArgumentNullException ("absoluteUri");
94 return ((type == null) || (type == typeof (Stream)));
99 public virtual Task<object> GetEntityAsync (Uri absoluteUri, string role, Type ofObjectToReturn)
101 throw new NotImplementedException ();