ForkContentHandler.java
/*
* Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.tools.xjc.util;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
/**
* ContentHandler that "forks" the incoming SAX2 events to
* two ContentHandlers.
*
*
* @author <a href="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
*/
public class ForkContentHandler implements ContentHandler {
/**
* Creates a ForkContentHandler.
*
* @param first
* This handler will receive a SAX event first.
* @param second
* This handler will receive a SAX event after the first handler
* receives it.
*/
public ForkContentHandler( ContentHandler first, ContentHandler second ) {
lhs = first;
rhs = second;
}
/**
* Creates ForkContentHandlers so that the specified handlers
* will receive SAX events in the order of the array.
*/
public static ContentHandler create( ContentHandler[] handlers ) {
if(handlers.length==0)
throw new IllegalArgumentException();
ContentHandler result = handlers[0];
for( int i=1; i<handlers.length; i++ )
result = new ForkContentHandler( result, handlers[i] );
return result;
}
private final ContentHandler lhs,rhs;
@Override
public void setDocumentLocator (Locator locator) {
lhs.setDocumentLocator(locator);
rhs.setDocumentLocator(locator);
}
@Override
public void startDocument() throws SAXException {
lhs.startDocument();
rhs.startDocument();
}
@Override
public void endDocument () throws SAXException {
lhs.endDocument();
rhs.endDocument();
}
@Override
public void startPrefixMapping (String prefix, String uri) throws SAXException {
lhs.startPrefixMapping(prefix,uri);
rhs.startPrefixMapping(prefix,uri);
}
@Override
public void endPrefixMapping (String prefix) throws SAXException {
lhs.endPrefixMapping(prefix);
rhs.endPrefixMapping(prefix);
}
@Override
public void startElement (String uri, String localName, String qName, Attributes attributes) throws SAXException {
lhs.startElement(uri,localName,qName,attributes);
rhs.startElement(uri,localName,qName,attributes);
}
@Override
public void endElement (String uri, String localName, String qName) throws SAXException {
lhs.endElement(uri,localName,qName);
rhs.endElement(uri,localName,qName);
}
@Override
public void characters (char[] ch, int start, int length) throws SAXException {
lhs.characters(ch,start,length);
rhs.characters(ch,start,length);
}
@Override
public void ignorableWhitespace (char[] ch, int start, int length) throws SAXException {
lhs.ignorableWhitespace(ch,start,length);
rhs.ignorableWhitespace(ch,start,length);
}
@Override
public void processingInstruction (String target, String data) throws SAXException {
lhs.processingInstruction(target,data);
rhs.processingInstruction(target,data);
}
@Override
public void skippedEntity (String name) throws SAXException {
lhs.skippedEntity(name);
rhs.skippedEntity(name);
}
}