src/com/sun/org/apache/xalan/internal/xsltc/trax/SAX2DOM.java - platform/external/jetbrains/jdk8u_jaxp - Git at Google

 /*
  * reserved comment block
  * DO NOT REMOVE OR ALTER!
  */
 /*
  * 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 1.8.2.1 2006/12/04 18:45:41 spericas Exp $
  */


 package com.sun.org.apache.xalan.internal.xsltc.trax;

 import java.util.Stack;
 import java.util.Vector;
 import javax.xml.parsers.DocumentBuilder;

 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;
 import org.xml.sax.ext.Locator2;

 /**
  * @author G. Todd Miller
  * @author Sunitha Reddy
  * @author Huizhe Wang
  */
 public class SAX2DOM implements ContentHandler, LexicalHandler, Constants {

     private Node _root = null;
     private Document _document = null;
     private Node _nextSibling = null;
     private Stack _nodeStk = new Stack();
     private Vector _namespaceDecls = null;
     private Node _lastSibling = null;
     private Locator locator = null;
     private boolean needToSetDocumentInfo = true;

     //Replace StringBuffer with StringBuilder now that we no long support jdk1.4
     private StringBuilder _textBuffer = new StringBuilder();
     private Node _nextSiblingCache = null;
     /**
      * JAXP document builder factory. Create a single instance and use
      * synchronization because the Javadoc is not explicit about
      * thread safety.
      */
     private DocumentBuilderFactory _factory =
             DocumentBuilderFactory.newInstance();
     private boolean _internal = true;

     public SAX2DOM(boolean useServicesMechanism) throws ParserConfigurationException {
         _document = createDocument(useServicesMechanism);
         _root = _document;
     }

     public SAX2DOM(Node root, Node nextSibling, boolean useServicesMechanism) throws ParserConfigurationException {
         _root = root;
         if (root instanceof Document) {
           _document = (Document)root;
         }
         else if (root != null) {
           _document = root.getOwnerDocument();
         }
         else {
           _document = createDocument(useServicesMechanism);
           _root = _document;
         }

         _nextSibling = nextSibling;
     }

     public SAX2DOM(Node root, boolean useServicesMechanism) throws ParserConfigurationException {
         this(root, null, useServicesMechanism);
     }

     public Node getDOM() {
         return _root;
     }

     public void characters(char[] ch, int start, int length) {
         // Ignore text nodes of length 0
         if (length == 0) {
             return;
         }

         final Node last = (Node)_nodeStk.peek();

         // No text nodes can be children of root (DOM006 exception)
         if (last != _document) {
             _nextSiblingCache = _nextSibling;
             _textBuffer.append(ch, start, length);
         }
     }
     private void appendTextNode() {
         if (_textBuffer.length() > 0) {
             final Node last = (Node)_nodeStk.peek();
             if (last == _root && _nextSiblingCache != null) {
                 _lastSibling = last.insertBefore(_document.createTextNode(_textBuffer.toString()), _nextSiblingCache);
             }
             else {
                 _lastSibling = last.appendChild(_document.createTextNode(_textBuffer.toString()));
             }
             _textBuffer.setLength(0);
         }
     }
     public void startDocument() {
         _nodeStk.push(_root);
     }

     public void endDocument() {
         _nodeStk.pop();
     }

     private void setDocumentInfo() {
         //try to set document version
         if (locator == null) return;
         try{
             _document.setXmlVersion(((Locator2)locator).getXMLVersion());
         }catch(ClassCastException e){}

     }

     public void startElement(String namespace, String localName, String qName,
         Attributes attrs)
     {
         appendTextNode();
         if (needToSetDocumentInfo) {
             setDocumentInfo();
             needToSetDocumentInfo = false;
         }

         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));
             }
         } */


         // Add attributes to element
         final int nattrs = attrs.getLength();
         for (int i = 0; i < nattrs; i++) {
             // checking if Namespace processing is being done
             String attQName = attrs.getQName(i);
             String attURI = attrs.getURI(i);
             if (attrs.getLocalName(i).equals("")) {
                 tmp.setAttribute(attQName, attrs.getValue(i));
                 if (attrs.getType(i).equals("ID")) {
                     tmp.setIdAttribute(attQName, true);
                 }
             } else {
                 tmp.setAttributeNS(attURI, attQName, attrs.getValue(i));
                 if (attrs.getType(i).equals("ID")) {
                     tmp.setIdAttributeNS(attURI, attrs.getLocalName(i), true);
                 }
             }
         }


         // Append this new node onto current stack node
         Node last = (Node)_nodeStk.peek();

         // If the SAX2DOM is created with a non-null next sibling node,
         // insert the result nodes before the next sibling under the root.
         if (last == _root && _nextSibling != null)
             last.insertBefore(tmp, _nextSibling);
         else
             last.appendChild(tmp);

         // Push this node onto stack
         _nodeStk.push(tmp);
         _lastSibling = null;
     }

     public void endElement(String namespace, String localName, String qName) {
         appendTextNode();
         _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) {
         appendTextNode();
         final Node last = (Node)_nodeStk.peek();
         ProcessingInstruction pi = _document.createProcessingInstruction(
                 target, data);
         if (pi != null){
           if (last == _root && _nextSibling != null)
               last.insertBefore(pi, _nextSibling);
           else
               last.appendChild(pi);

           _lastSibling = pi;
         }
     }

     /**
      * This class is only used internally so this method should never
      * be called.
      */
     public void setDocumentLocator(Locator locator) {
         this.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) {
         appendTextNode();
         final Node last = (Node)_nodeStk.peek();
         Comment comment = _document.createComment(new String(ch,start,length));
         if (comment != null){
           if (last == _root && _nextSibling != null)
               last.insertBefore(comment, _nextSibling);
           else
               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 {}

     private Document createDocument(boolean useServicesMechanism) throws ParserConfigurationException {
         if (_factory == null) {
             if (useServicesMechanism) {
                 _factory = DocumentBuilderFactory.newInstance();
                 if (!(_factory instanceof com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl)) {
                     _internal = false;
                 }
             } else {
                 _factory = DocumentBuilderFactory.newInstance(
                   "com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl",
                   SAX2DOM.class.getClassLoader()
                   );
             }
         }
         Document doc;
         if (_internal) {
             //default implementation is thread safe
             doc = _factory.newDocumentBuilder().newDocument();
         } else {
             synchronized(SAX2DOM.class) {
                 doc = _factory.newDocumentBuilder().newDocument();
             }
         }
         return doc;
     }

 }
	/*
	* reserved comment block
	* DO NOT REMOVE OR ALTER!
	*/
	/*
	* 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 1.8.2.1 2006/12/04 18:45:41 spericas Exp $
	*/


	package com.sun.org.apache.xalan.internal.xsltc.trax;

	import java.util.Stack;
	import java.util.Vector;
	import javax.xml.parsers.DocumentBuilder;

	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;
	import org.xml.sax.ext.Locator2;

	/**
	* @author G. Todd Miller
	* @author Sunitha Reddy
	* @author Huizhe Wang
	*/
	public class SAX2DOM implements ContentHandler, LexicalHandler, Constants {

	private Node _root = null;
	private Document _document = null;
	private Node _nextSibling = null;
	private Stack _nodeStk = new Stack();
	private Vector _namespaceDecls = null;
	private Node _lastSibling = null;
	private Locator locator = null;
	private boolean needToSetDocumentInfo = true;

	//Replace StringBuffer with StringBuilder now that we no long support jdk1.4
	private StringBuilder _textBuffer = new StringBuilder();
	private Node _nextSiblingCache = null;
	/**
	* JAXP document builder factory. Create a single instance and use
	* synchronization because the Javadoc is not explicit about
	* thread safety.
	*/
	private DocumentBuilderFactory _factory =
	DocumentBuilderFactory.newInstance();
	private boolean _internal = true;

	public SAX2DOM(boolean useServicesMechanism) throws ParserConfigurationException {
	_document = createDocument(useServicesMechanism);
	_root = _document;
	}

	public SAX2DOM(Node root, Node nextSibling, boolean useServicesMechanism) throws ParserConfigurationException {
	_root = root;
	if (root instanceof Document) {
	_document = (Document)root;
	}
	else if (root != null) {
	_document = root.getOwnerDocument();
	}
	else {
	_document = createDocument(useServicesMechanism);
	_root = _document;
	}

	_nextSibling = nextSibling;
	}

	public SAX2DOM(Node root, boolean useServicesMechanism) throws ParserConfigurationException {
	this(root, null, useServicesMechanism);
	}

	public Node getDOM() {
	return _root;
	}

	public void characters(char[] ch, int start, int length) {
	// Ignore text nodes of length 0
	if (length == 0) {
	return;
	}

	final Node last = (Node)_nodeStk.peek();

	// No text nodes can be children of root (DOM006 exception)
	if (last != _document) {
	_nextSiblingCache = _nextSibling;
	_textBuffer.append(ch, start, length);
	}
	}
	private void appendTextNode() {
	if (_textBuffer.length() > 0) {
	final Node last = (Node)_nodeStk.peek();
	if (last == _root && _nextSiblingCache != null) {
	_lastSibling = last.insertBefore(_document.createTextNode(_textBuffer.toString()), _nextSiblingCache);
	}
	else {
	_lastSibling = last.appendChild(_document.createTextNode(_textBuffer.toString()));
	}
	_textBuffer.setLength(0);
	}
	}
	public void startDocument() {
	_nodeStk.push(_root);
	}

	public void endDocument() {
	_nodeStk.pop();
	}

	private void setDocumentInfo() {
	//try to set document version
	if (locator == null) return;
	try{
	_document.setXmlVersion(((Locator2)locator).getXMLVersion());
	}catch(ClassCastException e){}

	}

	public void startElement(String namespace, String localName, String qName,
	Attributes attrs)
	{
	appendTextNode();
	if (needToSetDocumentInfo) {
	setDocumentInfo();
	needToSetDocumentInfo = false;
	}

	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));
	}
	} */


	// Add attributes to element
	final int nattrs = attrs.getLength();
	for (int i = 0; i < nattrs; i++) {
	// checking if Namespace processing is being done
	String attQName = attrs.getQName(i);
	String attURI = attrs.getURI(i);
	if (attrs.getLocalName(i).equals("")) {
	tmp.setAttribute(attQName, attrs.getValue(i));
	if (attrs.getType(i).equals("ID")) {
	tmp.setIdAttribute(attQName, true);
	}
	} else {
	tmp.setAttributeNS(attURI, attQName, attrs.getValue(i));
	if (attrs.getType(i).equals("ID")) {
	tmp.setIdAttributeNS(attURI, attrs.getLocalName(i), true);
	}
	}
	}


	// Append this new node onto current stack node
	Node last = (Node)_nodeStk.peek();

	// If the SAX2DOM is created with a non-null next sibling node,
	// insert the result nodes before the next sibling under the root.
	if (last == _root && _nextSibling != null)
	last.insertBefore(tmp, _nextSibling);
	else
	last.appendChild(tmp);

	// Push this node onto stack
	_nodeStk.push(tmp);
	_lastSibling = null;
	}

	public void endElement(String namespace, String localName, String qName) {
	appendTextNode();
	_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) {
	appendTextNode();
	final Node last = (Node)_nodeStk.peek();
	ProcessingInstruction pi = _document.createProcessingInstruction(
	target, data);
	if (pi != null){
	if (last == _root && _nextSibling != null)
	last.insertBefore(pi, _nextSibling);
	else
	last.appendChild(pi);

	_lastSibling = pi;
	}
	}

	/**
	* This class is only used internally so this method should never
	* be called.
	*/
	public void setDocumentLocator(Locator locator) {
	this.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) {
	appendTextNode();
	final Node last = (Node)_nodeStk.peek();
	Comment comment = _document.createComment(new String(ch,start,length));
	if (comment != null){
	if (last == _root && _nextSibling != null)
	last.insertBefore(comment, _nextSibling);
	else
	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 {}

	private Document createDocument(boolean useServicesMechanism) throws ParserConfigurationException {
	if (_factory == null) {
	if (useServicesMechanism) {
	_factory = DocumentBuilderFactory.newInstance();
	if (!(_factory instanceof com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl)) {
	_internal = false;
	}
	} else {
	_factory = DocumentBuilderFactory.newInstance(
	"com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl",
	SAX2DOM.class.getClassLoader()
	);
	}
	}
	Document doc;
	if (_internal) {
	//default implementation is thread safe
	doc = _factory.newDocumentBuilder().newDocument();
	} else {
	synchronized(SAX2DOM.class) {
	doc = _factory.newDocumentBuilder().newDocument();
	}
	}
	return doc;
	}

	}