mcs/class/System.XML/Mono.Xml.Xsl.Operations/XslLiteralElement.cs

   1 //
   2 // XslLiteralElement.cs
   3 //
   4 // Authors:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //      Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
   7 //
   8 // (C) 2003 Ben Maurer
   9 // (C) 2003 Atsushi Enomoto
  10 //
  11
  12 //
  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:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  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.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Xml;
  36 using System.Xml.XPath;
  37 using System.Xml.Xsl;
  38
  39 namespace Mono.Xml.Xsl.Operations {
  40         internal class XslLiteralElement : XslCompiledElement {
  41                 XslOperation children;
  42                 string localname, prefix, nsUri;
  43                 bool isEmptyElement;
  44                 ArrayList attrs;
  45                 XmlQualifiedName [] useAttributeSets;
  46                 Hashtable nsDecls;
  47                 string excludeResultPrefixes;
  48                 string extensionElementPrefixes;
  49                 ArrayList excludedPrefixes;
  50                 bool requireNameFix;
  51                 XPathNavigator stylesheetNode;
  52                 XslStylesheet stylesheet;
  53
  54                 public XslLiteralElement (Compiler c) : base (c) {}
  55
  56                 class XslLiteralAttribute {
  57                         string localname, prefix, nsUri;
  58                         XslAvt val;
  59
  60                         public XslLiteralAttribute (Compiler c)
  61                         {
  62                                 this.prefix = c.Input.Prefix;
  63                                 this.nsUri = c.Input.NamespaceURI;
  64                                 this.localname = c.Input.LocalName;
  65                                 this.val = new XslAvt (c.Input.Value, c);
  66                         }
  67
  68                         public void Evaluate (XslTransformProcessor p)
  69                         {
  70                                 p.Out.WriteAttributeString (prefix, localname, nsUri, val.Evaluate (p));
  71                         }
  72                 }
  73
  74                 protected override void Compile (Compiler c)
  75                 {
  76                         requireNameFix = true;
  77                         stylesheetNode = c.Input.Clone ();
  78                         stylesheet = c.CurrentStylesheet;
  79
  80                         this.localname = c.Input.LocalName;
  81                         this.useAttributeSets = c.ParseQNameListAttribute ("use-attribute-sets", XsltNamespace);
  82                         this.nsDecls = c.GetNamespacesToCopy ();
  83                         if (nsDecls.Count == 0) nsDecls = null;
  84                         this.isEmptyElement = c.Input.IsEmptyElement;
  85                         this.excludeResultPrefixes = c.Input.GetAttribute ("exclude-result-prefixes", XsltNamespace);
  86                         this.extensionElementPrefixes = c.Input.GetAttribute ("extension-element-prefixes", XsltNamespace);
  87                         excludedPrefixes = new ArrayList (excludeResultPrefixes.Split (XmlChar.WhitespaceChars));
  88                         excludedPrefixes.AddRange (extensionElementPrefixes.Split (XmlChar.WhitespaceChars));
  89
  90                         if (c.Input.MoveToFirstAttribute ())
  91                         {
  92                                 attrs = new ArrayList ();
  93                                 do {
  94                                         if (c.Input.NamespaceURI == XsltNamespace)
  95                                                 continue; //already handled
  96                                         attrs.Add (new XslLiteralAttribute (c));
  97                                 } while (c.Input.MoveToNextAttribute());
  98                                 c.Input.MoveToParent ();
  99                         }
 100
 101                         if (!c.Input.MoveToFirstChild ()) return;
 102                         children = c.CompileTemplateContent ();
 103                         c.Input.MoveToParent ();
 104                 }
 105
 106                 private void GetCorrectNames ()
 107                 {
 108                         requireNameFix = false;
 109                         prefix = stylesheetNode.Prefix;
 110                         string alias = stylesheet.PrefixInEffect (prefix, null);
 111                         if (alias != null && alias != stylesheetNode.Prefix) {
 112                                 nsUri = stylesheetNode.GetNamespace (alias);
 113                                 if (alias != null)
 114                                         prefix = alias;
 115                         }
 116                         else
 117                                 nsUri = stylesheetNode.NamespaceURI;
 118
 119                 }
 120
 121                 public override void Evaluate (XslTransformProcessor p)
 122                 {
 123                         // Since namespace-alias might be determined after compilation
 124                         // of import-ing stylesheets, this must be determined later.
 125                         if (requireNameFix)
 126                                 GetCorrectNames ();
 127
 128                         bool isCData = p.InsideCDataElement;
 129                         p.PushElementState (localname, nsUri, true);
 130                         p.Out.WriteStartElement (prefix, localname, nsUri);
 131
 132                         if (useAttributeSets != null)
 133                                 foreach (XmlQualifiedName s in useAttributeSets)
 134                                         p.ResolveAttributeSet (s).Evaluate (p);
 135
 136                         if (attrs != null) {
 137                                 int len = attrs.Count;
 138                                 for (int i = 0; i < len; i++)
 139                                         ((XslLiteralAttribute)attrs [i]).Evaluate (p);
 140                         }
 141
 142                         p.TryStylesheetNamespaceOutput (excludedPrefixes);
 143                         if (nsDecls != null) {
 144                                 foreach (DictionaryEntry de in nsDecls) {
 145                                         string actualPrefix = p.CompiledStyle.Style.PrefixInEffect (de.Key as String, excludedPrefixes);
 146                                         if (actualPrefix != null)
 147                                                 p.Out.WriteNamespaceDecl (actualPrefix, (string)de.Value);
 148                                 }
 149                         }
 150
 151                         if (children != null) children.Evaluate (p);
 152
 153                         if (isEmptyElement)
 154                                 p.Out.WriteEndElement ();
 155                         else
 156                                 p.Out.WriteFullEndElement ();
 157
 158                         p.PopCDataState (isCData);
 159                 }
 160         }
 161 }