mcs/class/Mono.Xml.Ext/Mono.Xml/XmlStoredResolver.cs

   1 //
   2 // XmlStoredResolver.cs
   3 //
   4 // Author: Atsushi Enomoto <atsushi@ximian.com>
   5 //
   6 // This code is too short to have "creativity". (thus, there must be no
   7 // copyright on this code). Feel free to use anywhere.
   8 //
   9 // Use like this:
  10 //
  11 //      XmlDocument doc = new XmlDocument ();
  12 //      XmlStoredResolver r = new XmlStoredResolver (new XmlUrlResolver ());
  13 //      r.Add ("http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd",
  14 //              "svg10.dtd");
  15 //      doc.XmlResolver = r;
  16 //
  17 using System;
  18 using System.Collections;
  19 using System.Net;
  20 using System.Xml;
  21
  22 namespace Mono.Xml
  23 {
  24         public class XmlStoredResolver : XmlResolver
  25         {
  26                 XmlResolver external;
  27                 XmlResolver local;
  28                 IDictionary uriTable;
  29
  30                 public XmlStoredResolver (XmlResolver resolver)
  31                         : this (resolver, resolver, new Hashtable ())
  32                 {
  33                 }
  34
  35                 public XmlStoredResolver (XmlResolver resolver, IDictionary uriTable)
  36                         : this (resolver, resolver, uriTable)
  37                 {
  38                 }
  39
  40                 public XmlStoredResolver (XmlResolver external, XmlResolver local)
  41                         : this (external, local, new Hashtable ())
  42                 {
  43                 }
  44
  45                 public XmlStoredResolver (XmlResolver external, XmlResolver local, IDictionary uriTable)
  46                 {
  47                         this.external = external;
  48                         this.local = local;
  49                         this.uriTable = uriTable;
  50                 }
  51
  52                 public override ICredentials Credentials {
  53                         set {
  54                                 external.Credentials = value;
  55                                 if (local != external)
  56                                         local.Credentials = value;
  57                         }
  58                 }
  59
  60                 public IDictionary Mapping {
  61                         get { return uriTable; }
  62                 }
  63
  64                 public void Add (string nominalUri, string actualLocation)
  65                 {
  66                         uriTable.Add (
  67                                 external.ResolveUri (null, nominalUri).ToString (),
  68                                 local.ResolveUri (null, actualLocation).ToString ());
  69                 }
  70
  71                 public override object GetEntity (Uri uri, string role, Type returnType)
  72                 {
  73                         string uriString = uri.ToString ();
  74                         string actualLocation = (string) uriTable [uriString];
  75                         if (actualLocation == null)
  76                                 return external.GetEntity (uri, role, returnType);
  77                         else
  78                                 return local.GetEntity (local.ResolveUri (null, actualLocation), role, returnType);
  79                 }
  80         }
  81 }