/*
* @(#)$Id: SAX2DOM.java,v 1.14 2002/06/11 17:03:49 tmiller Exp $
*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2001, Sun
* Microsystems., http://www.sun.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* @author G. Todd Miller
*/
package org.apache.xalan.xsltc.trax;
import java.util.Stack;
import java.util.Vector;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.Attributes;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Comment;
import org.w3c.dom.DOMException;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
import org.w3c.dom.Attr;
import org.xml.sax.ext.LexicalHandler;
import org.xml.sax.SAXException;
import org.apache.xalan.xsltc.runtime.Constants;
public class SAX2DOM implements ContentHandler, LexicalHandler, Constants {
private Document _root = null;
private Stack _nodeStk = new Stack();
private Vector _namespaceDecls = null;
public SAX2DOM() throws ParserConfigurationException {
final DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
_root = factory.newDocumentBuilder().newDocument();
}
public SAX2DOM(Node root) throws ParserConfigurationException {
if (root != null) {
_root = (Document) root; // TODO: add support for frags and elems
}
else {
final DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
_root = factory.newDocumentBuilder().newDocument();
}
}
public Node getDOM() {
return _root;
}
public void characters(char[] ch, int start, int length) {
final Node last = (Node)_nodeStk.peek();
// No text nodes can be children of root (DOM006 exception)
if (last != _root) {
final String text = new String(ch, start, length);
last.appendChild(_root.createTextNode(text));
}
}
public void startDocument() {
_nodeStk.push(_root);
}
public void endDocument() {
}
public void startElement(String namespace, String localName, String qName,
Attributes attrs)
{
final Element tmp = (Element)_root.createElementNS(namespace, qName);
// Add namespace declarations first
if (_namespaceDecls != null) {
final int nDecls = _namespaceDecls.size();
for (int i = 0; i < nDecls; i++) {
final String prefix = (String) _namespaceDecls.elementAt(i++);
if (prefix == null || prefix.equals(EMPTYSTRING)) {
tmp.setAttributeNS(XMLNS_URI, XMLNS_PREFIX,
(String) _namespaceDecls.elementAt(i));
}
else {
tmp.setAttributeNS(XMLNS_URI, XMLNS_STRING + prefix,
(String) _namespaceDecls.elementAt(i));
}
}
_namespaceDecls.clear();
}
// Add attributes to element
final int nattrs = attrs.getLength();
for (int i = 0; i < nattrs; i++) {
if (attrs.getLocalName(i) == null) {
tmp.setAttribute(attrs.getQName(i), attrs.getValue(i));
}
else {
tmp.setAttributeNS(attrs.getURI(i), attrs.getQName(i),
attrs.getValue(i));
}
}
// Append this new node onto current stack node
Node last = (Node)_nodeStk.peek();
last.appendChild(tmp);
// Push this node onto stack
_nodeStk.push(tmp);
}
public void endElement(String namespace, String localName, String qName) {
_nodeStk.pop();
}
public void startPrefixMapping(String prefix, String uri) {
if (_namespaceDecls == null) {
_namespaceDecls = new Vector(2);
}
_namespaceDecls.addElement(prefix);
_namespaceDecls.addElement(uri);
}
public void endPrefixMapping(String prefix) {
// do nothing
}
/**
* This class is only used internally so this method should never
* be called.
*/
public void ignorableWhitespace(char[] ch, int start, int length) {
}
/**
* adds processing instruction node to DOM.
*/
public void processingInstruction(String target, String data) {
final Node last = (Node)_nodeStk.peek();
ProcessingInstruction pi = _root.createProcessingInstruction(
target, data);
if (pi != null) last.appendChild(pi);
}
/**
* This class is only used internally so this method should never
* be called.
*/
public void setDocumentLocator(Locator locator) {
}
/**
* This class is only used internally so this method should never
* be called.
*/
public void skippedEntity(String name) {
}
/**
* Lexical Handler method to create comment node in DOM tree.
*/
public void comment(char[] ch, int start, int length) {
final Node last = (Node)_nodeStk.peek();
Comment comment = _root.createComment(new String(ch,start,length));
if (comment != null) last.appendChild(comment);
}
// Lexical Handler methods- not implemented
public void startCDATA() { }
public void endCDATA() { }
public void startEntity(java.lang.String name) { }
public void endDTD() { }
public void endEntity(String name) { }
public void startDTD(String name, String publicId, String systemId)
throws SAXException { }
}