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/*
* (c) Copyright 2009 University of Bristol
* All rights reserved.
* [See end of file]
*/
package net.rootdev.javardfa;
import net.rootdev.javardfa.uri.URIExtractor10;
import net.rootdev.javardfa.uri.URIExtractor;
import net.rootdev.javardfa.uri.URIExtractor11;
import net.rootdev.javardfa.uri.IRIResolver;
import javax.xml.stream.XMLEventFactory;
import javax.xml.stream.XMLOutputFactory;
import nu.validator.htmlparser.common.XmlViolationPolicy;
import nu.validator.htmlparser.sax.HtmlParser;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
/**
* I use these in a few places. stuck here for simplicity
*
* @author pldms
*/
public class ParserFactory {
public enum Format {
HTML, XHTML;
public static Format lookup(String format) {
if ("xhtml".equalsIgnoreCase(format)) {
return XHTML;
}
if ("html".equalsIgnoreCase(format)) {
return HTML;
}
return null;
}
}
/**
*
* @return An XMLReader with validation turned off
* @throws SAXException
*/
public static XMLReader createNonvalidatingReader() throws SAXException {
XMLReader reader = XMLReaderFactory.createXMLReader();
reader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
try {
reader.setFeature("http://www.xml.org/sax/features/validation", false);
} catch (Exception e) {} // continue whether this is recognised
return reader;
}
/**
*
* @return An HTML 5 XMLReader set up to by fairly forgiving.
*/
public static XMLReader createHTML5Reader() {
HtmlParser reader = new HtmlParser();
reader.setXmlPolicy(XmlViolationPolicy.ALLOW);
reader.setXmlnsPolicy(XmlViolationPolicy.ALLOW);
reader.setMappingLangToXmlLang(false);
return reader;
}
/**
* Makes an XMLReader appropriate to the format, with an rdfa parser plumbed
* to the StatementSink sink. Uses IRI resolver.
*
* @param sink
* @param format
* @return
* @throws SAXException
*/
public static XMLReader createReaderForFormat(StatementSink sink,
Format format, Setting... settings) throws SAXException {
return createReaderForFormat(sink, format, new IRIResolver(), settings);
}
/**
* Makes an XMLReader appropriate to the format, with an rdfa parser plumbed
* to the StatementSink sink.
*
* @param sink
* @param format
* @param resolver
* @return
* @throws SAXException
*/
public static XMLReader createReaderForFormat(StatementSink sink,
Format format, Resolver resolver, Setting... settings) throws SAXException {
XMLReader reader = getReader(format);
boolean is11 = false;
for (Setting setting: settings) if (setting == Setting.OnePointOne) is11 = true;
URIExtractor extractor = (is11) ?
new URIExtractor11(resolver) : new URIExtractor10(resolver);
ProfileCollector profileCollector = (is11) ?
new SimpleProfileCollector() : ProfileCollector.EMPTY_COLLECTOR ;
Parser parser = getParser(format, sink, extractor, profileCollector);
for (Setting setting: settings) parser.enable(setting);
reader.setContentHandler(parser);
return reader;
}
private static XMLReader getReader(Format format) throws SAXException {
switch (format) {
case XHTML:
return ParserFactory.createNonvalidatingReader();
default:
return ParserFactory.createHTML5Reader();
}
}
private static Parser getParser(Format format, StatementSink sink,
URIExtractor extractor, ProfileCollector profileCollector) {
return getParser(format, sink, XMLOutputFactory.newInstance(),
XMLEventFactory.newInstance(), extractor, profileCollector);
}
private static Parser getParser(Format format, StatementSink sink,
XMLOutputFactory outputFactory, XMLEventFactory eventFactory,
URIExtractor extractor, ProfileCollector profileCollector) {
switch (format) {
case XHTML:
return new Parser(sink, outputFactory, eventFactory, extractor, profileCollector);
default:
Parser p = new Parser(sink, outputFactory, eventFactory, extractor, profileCollector);
p.enable(Setting.ManualNamespaces);
return p;
}
}
}
/*
* (c) Copyright 2009 University of Bristol
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
