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

   1 //
   2 // XslCopyOf.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 XslCopyOf : XslCompiledElement {
  41                 XPathExpression select;
  42                 public XslCopyOf (Compiler c) : base (c) {}
  43                 protected override void Compile (Compiler c)
  44                 {
  45                         c.AssertAttribute ("select");
  46                         select = c.CompileExpression (c.GetAttribute ("select"));
  47                 }
  48
  49                 void CopyNode (XslTransformProcessor p, XPathNavigator nav)
  50                 {
  51                         Outputter outputter = p.Out;
  52                         switch (nav.NodeType) {
  53                         case XPathNodeType.Root:
  54                                 XPathNodeIterator itr = nav.SelectChildren (XPathNodeType.All);
  55                                 while (itr.MoveNext ())
  56                                         CopyNode (p, itr.Current);
  57                                 break;
  58
  59                         case XPathNodeType.Element:
  60                                 bool isCData = p.InsideCDataElement;
  61                                 string prefix = nav.Prefix;
  62                                 string ns = nav.NamespaceURI;
  63                                 p.PushElementState (prefix, nav.LocalName, ns, false);
  64                                 outputter.WriteStartElement (prefix, nav.LocalName, ns);
  65
  66                                 if (nav.MoveToFirstNamespace (XPathNamespaceScope.ExcludeXml))
  67                                 {
  68                                         do {
  69                                                 if (prefix == nav.Name)
  70                                                         continue;
  71                                                 if (nav.Name.Length == 0 && ns.Length == 0)
  72                                                         continue;
  73                                                 outputter.WriteNamespaceDecl (nav.Name, nav.Value);
  74                                         } while (nav.MoveToNextNamespace (XPathNamespaceScope.ExcludeXml));
  75                                         nav.MoveToParent ();
  76                                 }
  77
  78                                 if (nav.MoveToFirstAttribute())
  79                                 {
  80                                         do {
  81                                                 outputter.WriteAttributeString (nav.Prefix, nav.LocalName, nav.NamespaceURI, nav.Value);
  82                                         } while (nav.MoveToNextAttribute ());
  83                                         nav.MoveToParent();
  84                                 }
  85
  86                                 if (nav.MoveToFirstChild ()) {
  87                                         do {
  88                                                 CopyNode (p, nav);
  89                                         } while (nav.MoveToNext ());
  90                                         nav.MoveToParent ();
  91                                 }
  92
  93                                 if (nav.IsEmptyElement)
  94                                         outputter.WriteEndElement ();
  95                                 else
  96                                         outputter.WriteFullEndElement ();
  97
  98                                 p.PopCDataState (isCData);
  99                                 break;
 100
 101                         case XPathNodeType.Namespace:
 102                                 if (nav.Name != p.XPathContext.ElementPrefix &&
 103                                         (p.XPathContext.ElementNamespace.Length > 0 || nav.Name.Length > 0))
 104                                         outputter.WriteNamespaceDecl (nav.Name, nav.Value);
 105                                 break;
 106                         case XPathNodeType.Attribute:
 107                                 outputter.WriteAttributeString (nav.Prefix, nav.LocalName, nav.NamespaceURI, nav.Value);
 108                                 break;
 109                         case XPathNodeType.Whitespace:
 110                         case XPathNodeType.SignificantWhitespace:
 111                                 bool cdata = outputter.InsideCDataSection;
 112                                 outputter.InsideCDataSection = false;
 113                                 outputter.WriteString (nav.Value);
 114                                 outputter.InsideCDataSection = cdata;
 115                                 break;
 116                         case XPathNodeType.Text:
 117                                 outputter.WriteString (nav.Value);
 118                                 break;
 119                         case XPathNodeType.ProcessingInstruction:
 120                                 outputter.WriteProcessingInstruction (nav.Name, nav.Value);
 121                                 break;
 122                         case XPathNodeType.Comment:
 123                                 outputter.WriteComment (nav.Value);
 124                                 break;
 125                         }
 126                 }
 127
 128                 public override void Evaluate (XslTransformProcessor p)
 129                 {
 130                         object o = p.Evaluate (select);
 131                         XPathNodeIterator itr = o as XPathNodeIterator;
 132                         if (itr == null) {
 133                                 XPathNavigator nav = o as XPathNavigator; // RTF
 134                                 if (nav != null)
 135                                         itr = nav.SelectChildren (XPathNodeType.All);
 136                         }
 137                         if (itr != null) {
 138                                 while (itr.MoveNext ())
 139                                         CopyNode (p, itr.Current);
 140                         } else {
 141                                 p.Out.WriteString (XPathFunctions.ToString (o));
 142                         }
 143
 144                 }
 145         }
 146 }