- /*
- * Copyright 2001-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*
- * $Id: SAX2DOM.java,v 1.18 2004/02/16 22:57:21 minchau Exp $
- */
-
-
- package com.sun.org.apache.xalan.internal.xsltc.trax;
-
- import java.util.Stack;
- import java.util.Vector;
-
- import javax.xml.parsers.DocumentBuilderFactory;
- import javax.xml.parsers.ParserConfigurationException;
-
- import com.sun.org.apache.xalan.internal.xsltc.runtime.Constants;
-
- import org.w3c.dom.Comment;
- import org.w3c.dom.Document;
- import org.w3c.dom.Element;
- import org.w3c.dom.Node;
- import org.w3c.dom.Text;
- import org.w3c.dom.ProcessingInstruction;
- import org.xml.sax.Attributes;
- import org.xml.sax.ContentHandler;
- import org.xml.sax.Locator;
- import org.xml.sax.SAXException;
- import org.xml.sax.ext.LexicalHandler;
-
- /**
- * @author G. Todd Miller
- */
- public class SAX2DOM implements ContentHandler, LexicalHandler, Constants {
-
- private Node _root = null;
- private Document _document = null;
- private Stack _nodeStk = new Stack();
- private Vector _namespaceDecls = null;
- private Node _lastSibling = null;
-
- public SAX2DOM() throws ParserConfigurationException {
- final DocumentBuilderFactory factory =
- DocumentBuilderFactory.newInstance();
- _document = factory.newDocumentBuilder().newDocument();
- _root = _document;
- }
-
- public SAX2DOM(Node root) throws ParserConfigurationException {
- _root = root;
- if (root instanceof Document) {
- _document = (Document)root;
- }
- else if (root != null) {
- _document = root.getOwnerDocument();
- }
- else {
- final DocumentBuilderFactory factory =
- DocumentBuilderFactory.newInstance();
- _document = factory.newDocumentBuilder().newDocument();
- _root = _document;
- }
- }
-
- 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 != _document) {
- final String text = new String(ch, start, length);
- if( _lastSibling != null && _lastSibling.getNodeType() == Node.TEXT_NODE ){
- ((Text)_lastSibling).appendData(text);
- }
- else{
- _lastSibling = last.appendChild(_document.createTextNode(text));
- }
- }
- }
-
- public void startDocument() {
- _nodeStk.push(_root);
- }
-
- public void endDocument() {
- _nodeStk.pop();
- }
-
- public void startElement(String namespace, String localName, String qName,
- Attributes attrs)
- {
- final Element tmp = (Element)_document.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);
- _lastSibling = null;
- }
-
- public void endElement(String namespace, String localName, String qName) {
- _nodeStk.pop();
- _lastSibling = null;
- }
-
- 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 = _document.createProcessingInstruction(
- target, data);
- if (pi != null){
- last.appendChild(pi);
- _lastSibling = 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 = _document.createComment(new String(ch,start,length));
- if (comment != null){
- last.appendChild(comment);
- _lastSibling = 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 { }
-
- }