java/alt2xml-lib-input/src/cz/frantovo/alt2xml/SuperReader.java
author František Kučera <franta-hg@frantovo.cz>
Sun, 08 Jun 2014 11:24:03 +0200
changeset 38 3de77c1ac95e
parent 36 ad36a104623f
child 111 e4900596abdb
permissions -rw-r--r--
SuperReader.getFeature(): avoid NullPointerException
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/**
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 * Alt2XML
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 * Copyright © 2014 František Kučera (frantovo.cz)
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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 */
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package cz.frantovo.alt2xml;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Map.Entry;
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import org.xml.sax.ContentHandler;
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import org.xml.sax.DTDHandler;
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import org.xml.sax.EntityResolver;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXNotRecognizedException;
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import org.xml.sax.SAXNotSupportedException;
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import org.xml.sax.XMLReader;
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/**
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 *
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 * @author Ing. František Kučera (frantovo.cz)
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 */
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public class SuperReader implements XMLReader {
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	private ContentHandler contentHandler;
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	private ErrorHandler errorHandler;
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	private DTDHandler dtdHandler;
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	private EntityResolver entityResolver;
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	private final Map<String, Object> properties = new HashMap<>();
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	private final Map<String, Boolean> features = new HashMap<>();
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	private final ReaderFinder readerFinder;
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	public SuperReader(ReaderFinder readerFinder) {
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		this.readerFinder = readerFinder;
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	}
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	@Override
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	public void parse(InputSource input) throws IOException, SAXException {
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		AltInputSource altInput = new AltInputSource(entityResolver, input);
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		XMLReader reader = readerFinder.findReader(altInput);
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		reader.setContentHandler(contentHandler);
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		reader.setDTDHandler(dtdHandler);
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		reader.setEntityResolver(entityResolver);
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		reader.setErrorHandler(errorHandler);
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		for (Entry<String, Object> e : properties.entrySet()) {
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			reader.setProperty(e.getKey(), e.getValue());
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		}
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		for (Entry<String, Boolean> e : features.entrySet()) {
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			reader.setFeature(e.getKey(), e.getValue());
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		}
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		reader.parse(altInput);
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	}
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	@Override
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	public void parse(String systemId) throws IOException, SAXException {
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		parse(new InputSource(systemId));
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	}
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	@Override
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	public boolean getFeature(String name) throws SAXNotRecognizedException, SAXNotSupportedException {
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		/**
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		 * TODO:
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		 * All XMLReaders are required to recognize
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		 * the http://xml.org/sax/features/namespaces
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		 * and the http://xml.org/sax/features/namespace-prefixes feature names.
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		 */
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		Boolean feature = features.get(name);
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		return feature == null ? false : feature;
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	}
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	@Override
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	public void setFeature(String name, boolean value) throws SAXNotRecognizedException, SAXNotSupportedException {
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		/**
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		 * TODO: filtrovat – povolit jen náš jmenný prostor
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		 */
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		features.put(name, value);
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	}
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	@Override
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	public Object getProperty(String name) throws SAXNotRecognizedException, SAXNotSupportedException {
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		return properties.get(name);
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	}
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	@Override
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	public void setProperty(String name, Object value) throws SAXNotRecognizedException, SAXNotSupportedException {
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		properties.put(name, value);
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	}
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	@Override
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	public void setEntityResolver(EntityResolver entityResolver) {
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		this.entityResolver = entityResolver;
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	}
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	@Override
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	public EntityResolver getEntityResolver() {
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		return entityResolver;
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	}
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	@Override
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	public void setDTDHandler(DTDHandler dtdHandler) {
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		this.dtdHandler = dtdHandler;
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	}
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	@Override
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	public DTDHandler getDTDHandler() {
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		return dtdHandler;
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	}
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	@Override
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	public void setContentHandler(ContentHandler contentHandler) {
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		this.contentHandler = contentHandler;
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	}
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	@Override
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	public ContentHandler getContentHandler() {
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		return contentHandler;
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	}
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	@Override
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	public void setErrorHandler(ErrorHandler errorHandler) {
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		this.errorHandler = errorHandler;
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	}
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	@Override
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	public ErrorHandler getErrorHandler() {
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		return errorHandler;
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	}
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}