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                 bool requireNameFix;
  48                 XPathNavigator stylesheetNode;
  49                 XslStylesheet stylesheet;
  50
  51                 public XslLiteralElement (Compiler c) : base (c) {}
  52
  53                 class XslLiteralAttribute {
  54                         string localname, prefix, nsUri;
  55                         XslAvt val;
  56
  57                         public XslLiteralAttribute (Compiler c)
  58                         {
  59                                 this.prefix = c.Input.Prefix;
  60                                 this.nsUri = c.Input.NamespaceURI;
  61                                 this.localname = c.Input.LocalName;
  62                                 this.val = new XslAvt (c.Input.Value, c);
  63                         }
  64
  65                         public void Evaluate (XslTransformProcessor p)
  66                         {
  67                                 //FIXME: fix attribute prefixes according to aliases
  68                                 p.Out.WriteAttributeString (prefix, localname, nsUri, val.Evaluate (p));
  69                         }
  70                 }
  71
  72                 protected override void Compile (Compiler c)
  73                 {
  74                         requireNameFix = true;
  75                         stylesheetNode = c.Input.Clone ();
  76                         stylesheet = c.CurrentStylesheet;
  77
  78                         this.localname = c.Input.LocalName;
  79                         this.useAttributeSets = c.ParseQNameListAttribute ("use-attribute-sets", XsltNamespace);
  80                         this.nsDecls = c.GetNamespacesToCopy ();
  81                         if (nsDecls.Count == 0) nsDecls = null;
  82                         this.isEmptyElement = c.Input.IsEmptyElement;
  83
  84                         if (c.Input.MoveToFirstAttribute ())
  85                         {
  86                                 attrs = new ArrayList ();
  87                                 do {
  88                                         if (c.Input.NamespaceURI == XsltNamespace)
  89                                                 continue; //already handled
  90                                         attrs.Add (new XslLiteralAttribute (c));
  91                                 } while (c.Input.MoveToNextAttribute());
  92                                 c.Input.MoveToParent ();
  93                         }
  94
  95                         if (!c.Input.MoveToFirstChild ()) return;
  96                         children = c.CompileTemplateContent ();
  97                         c.Input.MoveToParent ();
  98                 }
  99
 100                 private void GetCorrectNames ()
 101                 {
 102                         requireNameFix = false;
 103                         prefix = stylesheetNode.Prefix;
 104                         string alias = stylesheet.PrefixInEffect (prefix, null);
 105                         if (alias != null && alias != stylesheetNode.Prefix) {
 106                                 nsUri = stylesheetNode.GetNamespace (alias);
 107                                 if (alias != null)
 108                                         prefix = alias;
 109                         }
 110                         else
 111                                 nsUri = stylesheetNode.NamespaceURI;
 112
 113                 }
 114
 115                 public override void Evaluate (XslTransformProcessor p)
 116                 {
 117                         // Since namespace-alias might be determined after compilation
 118                         // of import-ing stylesheets, this must be determined later.
 119                         if (requireNameFix)
 120                                 GetCorrectNames ();
 121
 122                         bool isCData = p.InsideCDataElement;
 123                         p.PushElementState (prefix, localname, nsUri, true);
 124                         p.Out.WriteStartElement (prefix, localname, nsUri);
 125
 126                         if (useAttributeSets != null)
 127                                 foreach (XmlQualifiedName s in useAttributeSets)
 128                                         p.ResolveAttributeSet (s).Evaluate (p);
 129
 130                         if (attrs != null) {
 131                                 int len = attrs.Count;
 132                                 for (int i = 0; i < len; i++)
 133                                         ((XslLiteralAttribute)attrs [i]).Evaluate (p);
 134                         }
 135
 136                         p.TryElementNamespacesOutput (nsDecls, null, null);
 137
 138                         if (children != null) children.Evaluate (p);
 139
 140                         if (isEmptyElement)
 141                                 p.Out.WriteEndElement ();
 142                         else
 143                                 p.Out.WriteFullEndElement ();
 144
 145                         p.PopCDataState (isCData);
 146                 }
 147         }
 148 }