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/*
* $Id: StAXStreamContentHandler.java,v 1.5 2004/07/05 23:15:11 cniles Exp $
*
* Copyright (c) 2004, Christian Niles, Unit12
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Christian Niles, Unit12, nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
*
*/
package javanet.staxutils;
import java.util.Iterator;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* SAX ContentHandler that writes events to a StAX {@link XMLStreamWriter}.
*
* @author Christian Niles
* @version $Revision: 1.5 $
*/
public class StAXStreamContentHandler extends StAXContentHandler {
/** The StAX stream to which SAX events will be written. */
private XMLStreamWriter writer;
public StAXStreamContentHandler() {
}
/**
* Constructs an instance that writes SAX events to the specified StAX
* stream.
*
* @param writer The StAX stream to which events will be written.
*/
public StAXStreamContentHandler(XMLStreamWriter writer) {
this.writer = writer;
}
/**
* Returns a reference to the {@link XMLStreamWriter}to which SAX events
* are written.
*
* @return The {@link XMLStreamWriter}to which SAX events are written.
*/
public XMLStreamWriter getStreamWriter() {
return writer;
}
/**
* Sets the {@link XMLStreamWriter}to which SAX events will be written.
*
* @param writer The {@link XMLStreamWriter}to which SAX events will be
* written.
*/
public void setStreamWriter(XMLStreamWriter writer) {
this.writer = writer;
}
public void startDocument() throws SAXException {
super.startDocument();
try {
writer.writeStartDocument();
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
public void endDocument() throws SAXException {
try {
writer.writeEndDocument();
} catch (XMLStreamException e) {
throw new SAXException(e);
}
super.endDocument();
}
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
try {
String[] qname = {null, null};
parseQName(qName, qname);
writer.writeStartElement(qname[0], qname[1], uri);
// copy namespaces
if (namespaces != null) {
Iterator prefixes = namespaces.getDeclaredPrefixes();
while (prefixes.hasNext()) {
String prefix = (String) prefixes.next();
String nsURI = namespaces.getNamespaceURI(prefix);
if (prefix.length() == 0) {
writer.setDefaultNamespace(nsURI);
} else {
writer.setPrefix(prefix, nsURI);
}
writer.writeNamespace(prefix, nsURI);
}
}
// write attributes
for (int i = 0, s = attributes.getLength(); i < s; i++) {
parseQName(attributes.getQName(i), qname);
String attrPrefix = qname[0];
String attrLocal = qname[1];
String attrQName = attributes.getQName(i);
String attrValue = attributes.getValue(i);
String attrURI = attributes.getURI(i);
if ("xmlns".equals(attrQName) || "xmlns".equals(attrPrefix)) {
// namespace declaration disguised as an attribute. If the
// namespace has already been declared, skip it, otherwise
// write it as an namespace
String nsURI = namespaces.getNamespaceURI(attrPrefix);
if (nsURI == null) {
if (attrPrefix.length() == 0) {
writer.setDefaultNamespace(attrValue);
} else {
writer.setPrefix(attrPrefix, attrValue);
}
writer.writeNamespace(attrPrefix, attrValue);
}
} else if (attrPrefix.length() > 0) {
writer.writeAttribute(attrPrefix, attrURI, attrLocal,
attrValue);
} else {
writer.writeAttribute(attrQName, attrValue);
}
}
} catch (XMLStreamException e) {
throw new SAXException(e);
} finally {
super.startElement(uri, localName, qName, attributes);
}
}
public void endElement(String uri, String localName, String qName)
throws SAXException {
try {
writer.writeEndElement();
} catch (XMLStreamException e) {
throw new SAXException(e);
} finally {
super.endElement(uri, localName, qName);
}
}
public void comment(char[] ch, int start, int length) throws SAXException {
super.comment(ch, start, length);
try {
writer.writeComment(new String(ch, start, length));
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
public void characters(char[] ch, int start, int length)
throws SAXException {
super.characters(ch, start, length);
try {
if (!isCDATA) {
writer.writeCharacters(ch, start, length);
}
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
public void endCDATA() throws SAXException {
try {
writer.writeCData(CDATABuffer.toString());
} catch (XMLStreamException e) {
throw new SAXException(e);
}
super.endCDATA();
}
public void ignorableWhitespace(char[] ch, int start, int length)
throws SAXException {
super.ignorableWhitespace(ch, start, length);
try {
writer.writeCharacters(ch, start, length);
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
public void processingInstruction(String target, String data)
throws SAXException {
super.processingInstruction(target, data);
try {
writer.writeProcessingInstruction(target, data);
} catch (XMLStreamException e) {
throw new SAXException(e);
}
}
}