class/System.XML/Mono.Xml.Xsl/MSXslScriptManager.cs

   1 //
   2 // MSXslScriptManager.cs
   3 //
   4 // Author:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //      Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
   7 //
   8 // (C)2003 Atsushi Enomoto
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31 using System;
  32 using System.Diagnostics;
  33 using System.Collections;
  34 using System.Globalization;
  35 using System.IO;
  36 using System.Reflection;
  37 using System.Security;
  38 using System.Security.Cryptography;
  39 using System.Security.Policy;
  40 using System.Text;
  41 using System.Xml;
  42 using System.Xml.Schema;
  43 using System.Xml.XPath;
  44 using System.Xml.Xsl;
  45
  46 namespace Mono.Xml.Xsl {
  47
  48         // FIXME: Correct evidence handling; test other than simple string case
  49         internal class MSXslScriptManager {
  50                 Hashtable scripts = new Hashtable ();
  51
  52                 public MSXslScriptManager () {}
  53
  54                 public void AddScript (Compiler c)
  55                 {
  56                         MSXslScript s = new MSXslScript (c.Input, c.Evidence);
  57                         string ns = c.Input.GetNamespace (s.ImplementsPrefix);
  58                         if (ns == null)
  59                                 throw new XsltCompileException ("Specified prefix for msxsl:script was not found: " + s.ImplementsPrefix, null, c.Input);
  60                         scripts.Add (ns, s.Compile (c.Input));
  61                 }
  62
  63                 enum ScriptingLanguage {
  64                         JScript,
  65                         VisualBasic,
  66                         CSharp
  67                 }
  68
  69                 public object GetExtensionObject (string ns)
  70                 {
  71                         if (!scripts.ContainsKey (ns))
  72                                 return null;
  73                         return Activator.CreateInstance ((Type) scripts [ns]);
  74                 }
  75
  76                 class MSXslScript {
  77                         ScriptingLanguage language = ScriptingLanguage.JScript; // default = JScript.
  78                         string implementsPrefix = null;
  79                         string code = null;
  80                         Evidence evidence;
  81
  82                         public MSXslScript (XPathNavigator nav, Evidence evidence)
  83                         {
  84                                 this.evidence = evidence;
  85                                 code = nav.Value;
  86                                 if (nav.MoveToFirstAttribute ()) {
  87                                         do {
  88                                                 switch (nav.LocalName) {
  89                                                 case "language":
  90                                                         switch (nav.Value.ToLower (CultureInfo.InvariantCulture)) {
  91                                                         case "jscript":
  92                                                         case "javascript":
  93                                                                 language = ScriptingLanguage.JScript; break;
  94                                                         case "vb":
  95                                                         case "visualbasic":
  96                                                                 language = ScriptingLanguage.VisualBasic;
  97                                                                 break;
  98                                                         case "c#":
  99                                                         case "csharp":
 100                                                                 language = ScriptingLanguage.CSharp;
 101                                                                 break;
 102                                                         default:
 103                                                                 throw new XsltException ("Invalid scripting language!", null);
 104                                                         }
 105                                                         break;
 106                                                 case "implements-prefix":
 107                                                         implementsPrefix = nav.Value;
 108                                                         break;
 109                                                 }
 110                                         } while (nav.MoveToNextAttribute ());
 111                                         nav.MoveToParent ();
 112                                 }
 113
 114                                 if (implementsPrefix == null)
 115                                         throw new XsltException ("need implements-prefix attr", null);
 116                         }
 117
 118                         public ScriptingLanguage Language {
 119                                 get { return language; }
 120                         }
 121
 122                         public string ImplementsPrefix {
 123                                 get { return implementsPrefix; }
 124                         }
 125
 126                         public string Code {
 127                                 get { return code; }
 128                         }
 129
 130                         public object Compile (XPathNavigator node)
 131                         {
 132 #if TARGET_JVM || MONOTOUCH
 133                                 throw new NotImplementedException ();
 134 #else
 135                                 string suffix = "";
 136                                 foreach (byte b in MD5.Create ().ComputeHash (Encoding.Unicode.GetBytes (code))) {
 137                                         suffix += b.ToString ("x2");
 138                                 }
 139                                 switch (this.language) {
 140                                 case ScriptingLanguage.CSharp:
 141                                         return new CSharpCompilerInfo ().GetScriptClass (Code, suffix, node, evidence);
 142                                 case ScriptingLanguage.JScript:
 143                                         return new JScriptCompilerInfo ().GetScriptClass (Code, suffix, node, evidence);
 144                                 case ScriptingLanguage.VisualBasic:
 145                                         return new VBCompilerInfo ().GetScriptClass (Code, suffix, node, evidence);
 146                                 default:
 147                                         return null;
 148                                 }
 149 #endif
 150                         }
 151                 }
 152         }
 153 }
 154