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package com.sun.xml.bind.v2.runtime;
import com.sun.istack.FinalArrayList;
import com.sun.istack.SAXException2;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import javax.xml.stream.XMLStreamException;
import java.io.IOException;
/**
* Receives SAX2 events and send the equivalent events to
* {@link XMLSerializer}
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
final class ContentHandlerAdaptor extends DefaultHandler {
/** Stores newly declared prefix-URI mapping. */
private final FinalArrayList<String> prefixMap = new FinalArrayList<String>();
/** Events will be sent to this object. */
private final XMLSerializer serializer;
private final StringBuffer text = new StringBuffer();
ContentHandlerAdaptor( XMLSerializer _serializer ) {
this.serializer = _serializer;
}
public void startDocument() {
prefixMap.clear();
}
public void startPrefixMapping(String prefix, String uri) {
prefixMap.add(prefix);
prefixMap.add(uri);
}
private boolean containsPrefixMapping(String prefix, String uri) {
for( int i=0; i<prefixMap.size(); i+=2 ) {
if(prefixMap.get(i).equals(prefix)
&& prefixMap.get(i+1).equals(uri))
return true;
}
return false;
}
public void startElement(String namespaceURI, String localName, String qName, Attributes atts)
throws SAXException {
try {
flushText();
int len = atts.getLength();
String p = getPrefix(qName);
// is this prefix going to be declared on this element?
if(containsPrefixMapping(p,namespaceURI))
serializer.startElementForce(namespaceURI,localName,p,null);
else
serializer.startElement(namespaceURI,localName, p,null);
// declare namespace events
for (int i = 0; i < prefixMap.size(); i += 2) {
// forcibly set this binding, instead of using declareNsUri.
// this guarantees that namespaces used in DOM will show up
// as-is in the marshalled output (instead of reassigned to something else,
// which may happen if you'd use declareNsUri.)
serializer.getNamespaceContext().force(
prefixMap.get(i + 1), prefixMap.get(i));
}
// make sure namespaces needed by attributes are bound
for( int i=0; i<len; i++ ) {
String qname = atts.getQName(i);
if(qname.startsWith("xmlns") || atts.getURI(i).length() == 0)
continue;
String prefix = getPrefix(qname);
serializer.getNamespaceContext().declareNamespace(
atts.getURI(i), prefix, true );
}
serializer.endNamespaceDecls(null);
// fire attribute events
for( int i=0; i<len; i++ ) {
// be defensive.
if(atts.getQName(i).startsWith("xmlns"))
continue;
serializer.attribute( atts.getURI(i), atts.getLocalName(i), atts.getValue(i));
}
prefixMap.clear();
serializer.endAttributes();
} catch (IOException e) {
throw new SAXException2(e);
} catch (XMLStreamException e) {
throw new SAXException2(e);
}
}
private String getPrefix(String qname) {
int idx = qname.indexOf(':');
String prefix = (idx == -1) ? "" : qname.substring(0, idx);
return prefix;
}
public void endElement(String namespaceURI, String localName, String qName) throws SAXException {
try {
flushText();
serializer.endElement();
} catch (IOException e) {
throw new SAXException2(e);
} catch (XMLStreamException e) {
throw new SAXException2(e);
}
}
private void flushText() throws SAXException, IOException, XMLStreamException {
if( text.length()!=0 ) {
serializer.text(text.toString(),null);
text.setLength(0);
}
}
public void characters(char[] ch, int start, int length) {
text.append(ch,start,length);
}
}