libjava/classpath/gnu/xml/transform/TextNode.java

   1 /* TextNode.java --
   2    Copyright (C) 2004,2006 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package gnu.xml.transform;
  39
  40 import javax.xml.namespace.QName;
  41 import javax.xml.transform.TransformerException;
  42 import org.w3c.dom.Document;
  43 import org.w3c.dom.DocumentFragment;
  44 import org.w3c.dom.Node;
  45 import org.w3c.dom.Text;
  46 import gnu.xml.xpath.Expr;
  47
  48 /**
  49  * A template node representing the XSL <code>text</code> instruction.
  50  *
  51  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
  52  */
  53 final class TextNode
  54   extends TemplateNode
  55 {
  56
  57   final boolean disableOutputEscaping;
  58
  59   TextNode(boolean disableOutputEscaping)
  60   {
  61     this.disableOutputEscaping = disableOutputEscaping;
  62   }
  63
  64   TemplateNode clone(Stylesheet stylesheet)
  65   {
  66     TemplateNode ret = new TextNode(disableOutputEscaping);
  67     if (children != null)
  68       ret.children = children.clone(stylesheet);
  69     if (next != null)
  70       ret.next = next.clone(stylesheet);
  71     return ret;
  72   }
  73
  74   void doApply(Stylesheet stylesheet, QName mode,
  75                Node context, int pos, int len,
  76                Node parent, Node nextSibling)
  77     throws TransformerException
  78   {
  79     String value = "";
  80     Document doc = (parent instanceof Document) ? (Document) parent :
  81       parent.getOwnerDocument();
  82     if (children != null)
  83       {
  84         // Create a document fragment to hold the text
  85         DocumentFragment fragment = doc.createDocumentFragment();
  86         // Apply children to the fragment
  87         children.apply(stylesheet, mode,
  88                        context, pos, len,
  89                        fragment, null);
  90         // Use XPath string-value of fragment
  91         value = Expr.stringValue(fragment);
  92       }
  93     Text text = doc.createTextNode(value);
  94     if (disableOutputEscaping)
  95       text.setUserData("disable-output-escaping", "yes", stylesheet);
  96     // Insert into result tree
  97     if (nextSibling != null)
  98       parent.insertBefore(text, nextSibling);
  99     else
 100       parent.appendChild(text);
 101     if (next != null)
 102       next.apply(stylesheet, mode,
 103                  context, pos, len,
 104                  parent, nextSibling);
 105   }
 106
 107   public String toString()
 108   {
 109     StringBuffer buf = new StringBuffer("text");
 110     if (disableOutputEscaping)
 111       {
 112         buf.append('[');
 113         buf.append("disable-output-escaping");
 114         buf.append(']');
 115       }
 116     return buf.toString();
 117   }
 118
 119 }