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diff --git a/libjava/classpath/gnu/xml/dom/ls/FilteredSAXEventSink.java b/libjava/classpath/gnu/xml/dom/ls/FilteredSAXEventSink.java
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+/* FilteredSAXEventSink.java --
+   Copyright (C) 1999,2000,2001 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.xml.dom.ls;
+
+import java.util.LinkedList;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.Text;
+import org.w3c.dom.ls.LSParserFilter;
+import org.w3c.dom.traversal.NodeFilter;
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+
+/**
+ * A SAX event sink that calls out to a parser filter in order to decide
+ * whether to insert nodes into the tree.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+class FilteredSAXEventSink
+  extends SAXEventSink
+{
+
+  final LSParserFilter filter;
+  final int whatToShow;
+
+  /**
+   * Stack of elements to insert.
+   */
+  LinkedList nodes;
+
+  /**
+   * Corresponding stack of filter decisions about the nodes.
+   */
+  LinkedList decisions;
+
+  /**
+   * True when rejecting child nodes.
+   */
+  boolean rejecting;
+
+  FilteredSAXEventSink(LSParserFilter filter)
+  {
+    this.filter = filter;
+    whatToShow = filter.getWhatToShow();
+  }
+
+  public void startDocument()
+    throws SAXException
+  {
+    if (interrupted)
+      {
+        return;
+      }
+    nodes = new LinkedList();
+    decisions = new LinkedList();
+
+    super.startDocument();
+  }
+
+  public void endDocument()
+    throws SAXException
+  {
+    if (interrupted)
+      {
+        return;
+      }
+    super.endDocument();
+
+    switch (getDecision(ctx, false))
+      {
+      case LSParserFilter.FILTER_REJECT:
+        ctx = null;
+        doc = null;
+        break;
+      }
+
+    nodes = null;
+    decisions = null;
+  }
+
+  public void startElement(String uri, String localName, String qName,
+                           Attributes atts)
+    throws SAXException
+  {
+    if (rejecting || interrupted)
+      {
+        return;
+      }
+    Element element = createElement(uri, localName, qName, atts);
+    ctx = element;
+
+    short decision = getDecision(element, true);
+    nodes.addLast(element);
+    decisions.addLast(new Short(decision));
+
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_REJECT:
+        rejecting = true;
+        break;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        break;
+      }
+  }
+
+  protected Attr createAttr(Attributes atts, int index)
+  {
+    Attr attr = super.createAttr(atts, index);
+    short decision = getDecision(attr, false);
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_REJECT:
+        return null;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        return null;
+      }
+    return attr;
+  }
+
+  public void endElement(String uri, String localName, String qName)
+    throws SAXException
+  {
+    if (rejecting || interrupted)
+      {
+        return;
+      }
+    super.endElement(uri, localName, qName);
+
+    Element element = (Element) nodes.removeLast();
+    Node parent = nodes.isEmpty() ? doc : (Node) nodes.getLast();
+    ctx = parent;
+    short decision = ((Short) decisions.removeLast()).shortValue();
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_SKIP:
+        // Add all children of element to parent
+        for (Node child = element.getFirstChild(); child != null;
+             child = child.getNextSibling())
+          {
+            parent.insertBefore(child, element);
+          }
+        return;
+      case LSParserFilter.FILTER_REJECT:
+        rejecting = false;
+        break;
+      }
+    decision = getDecision(element, false);
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_ACCEPT:
+        parent.appendChild(element);
+        break;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        break;
+      }
+  }
+
+  public void characters(char[] c, int off, int len)
+    throws SAXException
+  {
+    if (rejecting || interrupted)
+      {
+        return;
+      }
+    Text text = createText(c, off, len);
+    short decision = getDecision(text, false);
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_ACCEPT:
+        ctx.appendChild(text);
+        break;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        break;
+      }
+  }
+
+  public void processingInstruction(String target, String data)
+    throws SAXException
+  {
+    if (rejecting || interrupted || inDTD)
+      {
+        return;
+      }
+    Node pi = createProcessingInstruction(target, data);
+    short decision = getDecision(pi, false);
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_ACCEPT:
+        ctx.appendChild(pi);
+        break;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        break;
+      }
+  }
+
+  public void startDTD(String name, String publicId, String systemId)
+    throws SAXException
+  {
+    if (interrupted)
+      {
+        return;
+      }
+    Node doctype = createDocumentType(name, publicId, systemId);
+    ctx = doctype;
+    inDTD = true;
+    nodes.addLast(doctype);
+    decisions.addLast(new Short(LSParserFilter.FILTER_ACCEPT));
+  }
+
+  public void endDTD()
+    throws SAXException
+  {
+    if (interrupted)
+      {
+        return;
+      }
+    Node doctype = (Node) nodes.removeLast();
+    decisions.removeLast();
+    inDTD = false;
+    ctx = doc;
+    short decision = getDecision(doctype, false);
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_ACCEPT:
+        ctx.appendChild(doctype);
+        break;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        break;
+      }
+  }
+
+  public void comment(char[] c, int off, int len)
+    throws SAXException
+  {
+    if (rejecting || interrupted || inDTD)
+      {
+        return;
+      }
+    Node comment = createComment(c, off, len);
+    short decision = getDecision(comment, false);
+    switch (decision)
+      {
+      case LSParserFilter.FILTER_ACCEPT:
+        ctx.appendChild(comment);
+        break;
+      case LSParserFilter.FILTER_INTERRUPT:
+        interrupted = true;
+        break;
+      }
+  }
+
+  // TODO declarations
+
+  short getDecision(Node node, boolean start)
+  {
+    boolean show = (whatToShow == NodeFilter.SHOW_ALL);
+    if (!show)
+      {
+        switch (node.getNodeType())
+          {
+          case Node.ATTRIBUTE_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_ATTRIBUTE) != 0);
+            break;
+          case Node.TEXT_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_TEXT) != 0);
+            break;
+          case Node.CDATA_SECTION_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_CDATA_SECTION) != 0);
+            break;
+          case Node.ELEMENT_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_ELEMENT) != 0);
+            break;
+          case Node.COMMENT_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_COMMENT) != 0);
+            break;
+          case Node.DOCUMENT_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_DOCUMENT) != 0);
+            break;
+          case Node.PROCESSING_INSTRUCTION_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_PROCESSING_INSTRUCTION) != 0);
+            break;
+          case Node.DOCUMENT_FRAGMENT_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_DOCUMENT_FRAGMENT) != 0);
+            break;
+          case Node.DOCUMENT_TYPE_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_DOCUMENT_TYPE) != 0);
+            break;
+          case Node.ENTITY_REFERENCE_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_ENTITY_REFERENCE) != 0);
+            break;
+          case Node.ENTITY_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_ENTITY) != 0);
+            break;
+          case Node.NOTATION_NODE:
+            show = ((whatToShow & NodeFilter.SHOW_NOTATION) != 0);
+            break;
+          }
+      }
+    if (!show)
+      {
+        return LSParserFilter.FILTER_ACCEPT;
+      }
+    if (start)
+      {
+        return filter.startElement((Element) node);
+      }
+    return filter.acceptNode(node);
+  }
+
+}