/*
 * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC.
 */
 


package com.sun.xml.internal.fastinfoset.tools;

import com.sun.xml.internal.fastinfoset.QualifiedName;
import java.util.ArrayList;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.ext.LexicalHandler;
import org.xml.sax.helpers.DefaultHandler;

public class SAX2StAXWriter extends DefaultHandler implements LexicalHandler {
        
    /**
     * XML stream writer where events are pushed.
     */
    XMLStreamWriter _writer;
    
    /**
     * List of namespace decl for upcoming element.
     */
    ArrayList _namespaces = new ArrayList();
    
    public SAX2StAXWriter(XMLStreamWriter writer) {
        _writer = writer;
    }
    
    public XMLStreamWriter getWriter() {
        return _writer;
    }
    
    public void startDocument() throws SAXException {
        try {
            _writer.writeStartDocument();
        }
        catch (XMLStreamException e) {
            throw new SAXException(e);
        }
    }
    
    public void endDocument() throws SAXException {
        try {
            _writer.writeEndDocument();
            _writer.flush();
        }
        catch (XMLStreamException e) {
            throw new SAXException(e);
        }
    }
    
    public void characters(char[] ch, int start, int length) 
        throws SAXException 
    {
        try {
            _writer.writeCharacters(ch, start, length);
        }
        catch (XMLStreamException e) {
            throw new SAXException(e);
        }
    }    
    
    public void startElement(String namespaceURI, String localName, 
        String qName, Attributes atts) throws SAXException 
    {
        try {
            int k = qName.indexOf(':');
            String prefix = (k > 0) ? qName.substring(0, k) : "";
            _writer.writeStartElement(prefix, localName, namespaceURI);
            
            int length = _namespaces.size();
            for (int i = 0; i < length; i++) {
                QualifiedName nsh = (QualifiedName) _namespaces.get(i);
                _writer.writeNamespace(nsh.prefix, nsh.namespaceName);
            }
            _namespaces.clear();
            
            length = atts.getLength();
            for (int i = 0; i < length; i++) {
                _writer.writeAttribute(atts.getURI(i), 
                                       atts.getLocalName(i),
                                       atts.getValue(i));                                       
            }
        }
        catch (XMLStreamException e) {
            throw new SAXException(e);
        }                
    }
    
    public void endElement(String namespaceURI, String localName, 
        String qName) throws SAXException 
    {
        try {
            _writer.writeEndElement();
        }
        catch (XMLStreamException e) {
            e.printStackTrace();
            throw new SAXException(e);
        }        
    }
    
    public void startPrefixMapping(String prefix, String uri) 
        throws SAXException 
    {
    // Commented as in StAX NS are declared for current element?
    // now _writer.setPrefix() is invoked in _writer.writeNamespace()
//        try {
//            _writer.setPrefix(prefix, uri);
            _namespaces.add(new QualifiedName(prefix, uri));
//        }
//        catch (XMLStreamException e) {
//            throw new SAXException(e);
//        }
    }
    
    public void endPrefixMapping(String prefix) throws SAXException {
    }
    
    public void ignorableWhitespace(char[] ch, int start, int length) 
        throws SAXException 
    {
        characters(ch, start, length);
    }
    
    public void processingInstruction(String target, String data) 
        throws SAXException 
    {
        try {
            _writer.writeProcessingInstruction(target, data);
        }
        catch (XMLStreamException e) {
            throw new SAXException(e);
        }
    }
    
    public void setDocumentLocator(Locator locator) {
    }
    
    public void skippedEntity(String name) throws SAXException {
    }
    
    public void comment(char[] ch, int start, int length) 
        throws SAXException 
    {
        try {
            _writer.writeComment(new String(ch, start, length));
        }
        catch (XMLStreamException e) {
            throw new SAXException(e);
        }        
    }    
    
    public void endCDATA() throws SAXException {
    }
    
    public void endDTD() throws SAXException {
    }
    
    public void endEntity(String name) throws SAXException {
    }
    
    public void startCDATA() throws SAXException {
    }
    
    public void startDTD(String name, String publicId, String systemId) throws SAXException {
    }
    
    public void startEntity(String name) throws SAXException {
    }
    
}

