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/*
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* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.org.apache.xalan.internal.xsltc.trax;
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import java.io.IOException;
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import java.util.Hashtable;
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import java.util.Stack;
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import java.util.Vector;
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import java.util.Iterator;
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import org.xml.sax.Attributes;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.DTDHandler;
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import org.xml.sax.EntityResolver;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.Locator;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXNotRecognizedException;
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import org.xml.sax.SAXNotSupportedException;
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import org.xml.sax.XMLReader;
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import org.xml.sax.ext.LexicalHandler;
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import org.xml.sax.ext.Locator2;
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import org.xml.sax.helpers.AttributesImpl;
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import com.sun.org.apache.xalan.internal.xsltc.dom.SAXImpl;
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import javax.xml.namespace.QName;
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import javax.xml.stream.XMLStreamReader;
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import javax.xml.stream.XMLStreamConstants;
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import javax.xml.stream.XMLStreamException;
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import javax.xml.stream.events.Attribute;
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import javax.xml.stream.events.Characters;
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import javax.xml.stream.events.EndElement;
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import javax.xml.stream.events.Namespace;
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import javax.xml.stream.events.ProcessingInstruction;
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import javax.xml.stream.events.StartElement;
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import javax.xml.stream.events.StartDocument;
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import javax.xml.stream.events.XMLEvent;
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/**
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* @author Padmaja Vedula
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* @author Sunitha Reddy
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*/
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public class StAXStream2SAX implements XMLReader, Locator {
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//private final static String EMPTYSTRING = "";
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//private static final String XMLNS_PREFIX = "xmlns";
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// StAX Stream source
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private final XMLStreamReader staxStreamReader;
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//private Node _dom = null;
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private ContentHandler _sax = null;
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private LexicalHandler _lex = null;
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private SAXImpl _saxImpl = null;
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//private Hashtable _nsPrefixes = new Hashtable();
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public StAXStream2SAX(XMLStreamReader staxSrc) {
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staxStreamReader = staxSrc;
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}
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public ContentHandler getContentHandler() {
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return _sax;
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}
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public void setContentHandler(ContentHandler handler) throws
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NullPointerException
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{
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_sax = handler;
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if (handler instanceof LexicalHandler) {
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_lex = (LexicalHandler) handler;
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}
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if (handler instanceof SAXImpl) {
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_saxImpl = (SAXImpl)handler;
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}
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}
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public void parse(InputSource unused) throws IOException, SAXException {
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try {
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bridge();
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} catch (XMLStreamException e) {
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throw new SAXException(e);
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}
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}
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//Main Work Starts Here.
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public void parse() throws IOException, SAXException, XMLStreamException {
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bridge();
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}
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/**
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* This class is only used internally so this method should never
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* be called.
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*/
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public void parse(String sysId) throws IOException, SAXException {
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throw new IOException("This method is not yet implemented.");
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}
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public void bridge() throws XMLStreamException {
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try {
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// remembers the nest level of elements to know when we are done.
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int depth=0;
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// skip over START_DOCUMENT
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int event = staxStreamReader.getEventType();
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if (event == XMLStreamConstants.START_DOCUMENT) {
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event = staxStreamReader.next();
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}
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// If not a START_ELEMENT (e.g., a DTD), skip to next tag
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if (event != XMLStreamConstants.START_ELEMENT) {
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event = staxStreamReader.nextTag();
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// An error if a START_ELEMENT isn't found now
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if (event != XMLStreamConstants.START_ELEMENT) {
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throw new IllegalStateException("The current event is " +
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"not START_ELEMENT\n but" + event);
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}
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}
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handleStartDocument();
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do {
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// These are all of the events listed in the javadoc for
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// XMLEvent.
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// The spec only really describes 11 of them.
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switch (event) {
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case XMLStreamConstants.START_ELEMENT :
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depth++;
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handleStartElement();
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break;
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case XMLStreamConstants.END_ELEMENT :
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handleEndElement();
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depth--;
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break;
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case XMLStreamConstants.CHARACTERS :
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handleCharacters();
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break;
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case XMLStreamConstants.ENTITY_REFERENCE :
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handleEntityReference();
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break;
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case XMLStreamConstants.PROCESSING_INSTRUCTION :
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handlePI();
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break;
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case XMLStreamConstants.COMMENT :
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handleComment();
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break;
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case XMLStreamConstants.DTD :
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handleDTD();
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break;
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case XMLStreamConstants.ATTRIBUTE :
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handleAttribute();
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break;
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case XMLStreamConstants.NAMESPACE :
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handleNamespace();
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break;
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case XMLStreamConstants.CDATA :
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handleCDATA();
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break;
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case XMLStreamConstants.ENTITY_DECLARATION :
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handleEntityDecl();
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break;
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case XMLStreamConstants.NOTATION_DECLARATION :
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handleNotationDecl();
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break;
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case XMLStreamConstants.SPACE :
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handleSpace();
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break;
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default :
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throw new InternalError("processing event: " + event);
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}
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event=staxStreamReader.next();
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} while (depth!=0);
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handleEndDocument();
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} catch (SAXException e) {
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throw new XMLStreamException(e);
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}
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}
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private void handleEndDocument() throws SAXException {
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_sax.endDocument();
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}
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private void handleStartDocument() throws SAXException {
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_sax.setDocumentLocator(new Locator2() {
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public int getColumnNumber() {
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return staxStreamReader.getLocation().getColumnNumber();
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}
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public int getLineNumber() {
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return staxStreamReader.getLocation().getLineNumber();
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}
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public String getPublicId() {
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return staxStreamReader.getLocation().getPublicId();
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}
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public String getSystemId() {
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return staxStreamReader.getLocation().getSystemId();
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}
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public String getXMLVersion() {
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return staxStreamReader.getVersion();
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}
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public String getEncoding() {
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return staxStreamReader.getEncoding();
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}
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});
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_sax.startDocument();
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}
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private void handlePI() throws XMLStreamException {
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try {
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_sax.processingInstruction(
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staxStreamReader.getPITarget(),
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staxStreamReader.getPIData());
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} catch (SAXException e) {
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throw new XMLStreamException(e);
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}
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}
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private void handleCharacters() throws XMLStreamException {
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// workaround for bugid 5046319 - switch over to commented section
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// below when it is fixed.
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int textLength = staxStreamReader.getTextLength();
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char[] chars = new char[textLength];
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staxStreamReader.getTextCharacters(0, chars, 0, textLength);
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try {
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_sax.characters(chars, 0, chars.length);
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} catch (SAXException e) {
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throw new XMLStreamException(e);
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}
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// int start = 0;
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// int len;
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// do {
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// len = staxStreamReader.getTextCharacters(start, buf, 0, buf.length);
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// start += len;
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// try {
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// _sax.characters(buf, 0, len);
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// } catch (SAXException e) {
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// throw new XMLStreamException(e);
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// }
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// } while (len == buf.length);
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}
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private void handleEndElement() throws XMLStreamException {
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QName qName = staxStreamReader.getName();
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try {
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//construct prefix:localName from qName
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String qname = "";
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if (qName.getPrefix() != null && qName.getPrefix().trim().length() != 0){
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qname = qName.getPrefix() + ":";
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}
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qname += qName.getLocalPart();
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// fire endElement
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_sax.endElement(
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qName.getNamespaceURI(),
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qName.getLocalPart(),
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qname);
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// end namespace bindings
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int nsCount = staxStreamReader.getNamespaceCount();
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for (int i = nsCount - 1; i >= 0; i--) {
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String prefix = staxStreamReader.getNamespacePrefix(i);
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if (prefix == null) { // true for default namespace
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prefix = "";
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}
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_sax.endPrefixMapping(prefix);
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}
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} catch (SAXException e) {
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throw new XMLStreamException(e);
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}
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}
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private void handleStartElement() throws XMLStreamException {
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try {
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// start namespace bindings
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int nsCount = staxStreamReader.getNamespaceCount();
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for (int i = 0; i < nsCount; i++) {
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String prefix = staxStreamReader.getNamespacePrefix(i);
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if (prefix == null) { // true for default namespace
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prefix = "";
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}
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_sax.startPrefixMapping(
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prefix,
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staxStreamReader.getNamespaceURI(i));
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}
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// fire startElement
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QName qName = staxStreamReader.getName();
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String prefix = qName.getPrefix();
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String rawname;
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if(prefix==null || prefix.length()==0)
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rawname = qName.getLocalPart();
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else
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rawname = prefix + ':' + qName.getLocalPart();
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Attributes attrs = getAttributes();
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_sax.startElement(
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qName.getNamespaceURI(),
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qName.getLocalPart(),
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rawname,
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attrs);
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} catch (SAXException e) {
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throw new XMLStreamException(e);
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}
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}
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/**
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* Get the attributes associated with the given START_ELEMENT or ATTRIBUTE
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* StAXevent.
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*
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* @return the StAX attributes converted to an org.xml.sax.Attributes
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*/
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private Attributes getAttributes() {
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AttributesImpl attrs = new AttributesImpl();
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int eventType = staxStreamReader.getEventType();
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if (eventType != XMLStreamConstants.ATTRIBUTE
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&& eventType != XMLStreamConstants.START_ELEMENT) {
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throw new InternalError(
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"getAttributes() attempting to process: " + eventType);
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}
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// in SAX, namespace declarations are not part of attributes by default.
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// (there's a property to control that, but as far as we are concerned
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// we don't use it.) So don't add xmlns:* to attributes.
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// gather non-namespace attrs
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for (int i = 0; i < staxStreamReader.getAttributeCount(); i++) {
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String uri = staxStreamReader.getAttributeNamespace(i);
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if(uri==null) uri="";
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String localName = staxStreamReader.getAttributeLocalName(i);
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String prefix = staxStreamReader.getAttributePrefix(i);
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String qName;
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if(prefix==null || prefix.length()==0)
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qName = localName;
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else
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qName = prefix + ':' + localName;
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String type = staxStreamReader.getAttributeType(i);
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String value = staxStreamReader.getAttributeValue(i);
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attrs.addAttribute(uri, localName, qName, type, value);
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}
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return attrs;
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}
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private void handleNamespace() {
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// no-op ???
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// namespace events don't normally occur outside of a startElement
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// or endElement
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}
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private void handleAttribute() {
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// no-op ???
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// attribute events don't normally occur outside of a startElement
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// or endElement
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}
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private void handleDTD() {
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// no-op ???
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// it seems like we need to pass this info along, but how?
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}
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private void handleComment() {
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// no-op ???
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}
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private void handleEntityReference() {
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// no-op ???
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}
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private void handleSpace() {
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// no-op ???
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// this event is listed in the javadoc, but not in the spec.
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}
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private void handleNotationDecl() {
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// no-op ???
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// this event is listed in the javadoc, but not in the spec.
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}
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private void handleEntityDecl() {
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// no-op ???
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// this event is listed in the javadoc, but not in the spec.
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}
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private void handleCDATA() {
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// no-op ???
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// this event is listed in the javadoc, but not in the spec.
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}
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430 |
|
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|
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432 |
/**
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|
433 |
* This class is only used internally so this method should never
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434 |
* be called.
|
|
435 |
*/
|
|
436 |
public DTDHandler getDTDHandler() {
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437 |
return null;
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438 |
}
|
|
439 |
|
|
440 |
/**
|
|
441 |
* This class is only used internally so this method should never
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442 |
* be called.
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443 |
*/
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|
444 |
public ErrorHandler getErrorHandler() {
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445 |
return null;
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446 |
}
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447 |
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448 |
/**
|
|
449 |
* This class is only used internally so this method should never
|
|
450 |
* be called.
|
|
451 |
*/
|
|
452 |
public boolean getFeature(String name) throws SAXNotRecognizedException,
|
|
453 |
SAXNotSupportedException
|
|
454 |
{
|
|
455 |
return false;
|
|
456 |
}
|
|
457 |
|
|
458 |
/**
|
|
459 |
* This class is only used internally so this method should never
|
|
460 |
* be called.
|
|
461 |
*/
|
|
462 |
public void setFeature(String name, boolean value) throws
|
|
463 |
SAXNotRecognizedException, SAXNotSupportedException
|
|
464 |
{
|
|
465 |
}
|
|
466 |
|
|
467 |
/**
|
|
468 |
* This class is only used internally so this method should never
|
|
469 |
* be called.
|
|
470 |
*/
|
|
471 |
public void setDTDHandler(DTDHandler handler) throws NullPointerException {
|
|
472 |
}
|
|
473 |
|
|
474 |
/**
|
|
475 |
* This class is only used internally so this method should never
|
|
476 |
* be called.
|
|
477 |
*/
|
|
478 |
public void setEntityResolver(EntityResolver resolver) throws
|
|
479 |
NullPointerException
|
|
480 |
{
|
|
481 |
}
|
|
482 |
|
|
483 |
/**
|
|
484 |
* This class is only used internally so this method should never
|
|
485 |
* be called.
|
|
486 |
*/
|
|
487 |
public EntityResolver getEntityResolver() {
|
|
488 |
return null;
|
|
489 |
}
|
|
490 |
|
|
491 |
/**
|
|
492 |
* This class is only used internally so this method should never
|
|
493 |
* be called.
|
|
494 |
*/
|
|
495 |
public void setErrorHandler(ErrorHandler handler) throws
|
|
496 |
NullPointerException
|
|
497 |
{
|
|
498 |
}
|
|
499 |
|
|
500 |
/**
|
|
501 |
* This class is only used internally so this method should never
|
|
502 |
* be called.
|
|
503 |
*/
|
|
504 |
public void setProperty(String name, Object value) throws
|
|
505 |
SAXNotRecognizedException, SAXNotSupportedException {
|
|
506 |
}
|
|
507 |
|
|
508 |
/**
|
|
509 |
* This class is only used internally so this method should never
|
|
510 |
* be called.
|
|
511 |
*/
|
|
512 |
public Object getProperty(String name) throws SAXNotRecognizedException,
|
|
513 |
SAXNotSupportedException
|
|
514 |
{
|
|
515 |
return null;
|
|
516 |
}
|
|
517 |
|
|
518 |
/**
|
|
519 |
* This class is only used internally so this method should never
|
|
520 |
* be called.
|
|
521 |
*/
|
|
522 |
public int getColumnNumber() {
|
|
523 |
return 0;
|
|
524 |
}
|
|
525 |
|
|
526 |
/**
|
|
527 |
* This class is only used internally so this method should never
|
|
528 |
* be called.
|
|
529 |
*/
|
|
530 |
public int getLineNumber() {
|
|
531 |
return 0;
|
|
532 |
}
|
|
533 |
|
|
534 |
/**
|
|
535 |
* This class is only used internally so this method should never
|
|
536 |
* be called.
|
|
537 |
*/
|
|
538 |
public String getPublicId() {
|
|
539 |
return null;
|
|
540 |
}
|
|
541 |
|
|
542 |
/**
|
|
543 |
* This class is only used internally so this method should never
|
|
544 |
* be called.
|
|
545 |
*/
|
|
546 |
public String getSystemId() {
|
|
547 |
return null;
|
|
548 |
}
|
|
549 |
|
|
550 |
}
|