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package org.zwobble.mammoth.xml;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.util.stream.IntStream;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import static java.util.stream.Collectors.toMap;
import lombok.val;
public class SimpleSax {
public static void parseStream(InputStream input, SimpleSaxHandler handler) {
parseInputSource(new InputSource(input), handler);
}
public static void parseString(String value, SimpleSaxHandler handler) {
parseInputSource(new InputSource(new StringReader(value)), handler);
}
private static void parseInputSource(InputSource inputSource, SimpleSaxHandler handler) {
val parserFactory = SAXParserFactory.newInstance();
parserFactory.setNamespaceAware(true);
try {
val saxParser = parserFactory.newSAXParser();
val xmlReader = saxParser.getXMLReader();
xmlReader.setContentHandler(new DefaultHandler() {
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
final ElementName name = new ElementName(uri, localName);
val attributesMap = IntStream.range(0, attributes.getLength())
.boxed()
.collect(toMap(
index -> new ElementName(attributes.getURI(index), attributes.getLocalName(index)),
attributes::getValue
));
handler.startElement(name, attributesMap);
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
handler.endElement();
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
handler.characters(new String(ch, start, length));
}
});
xmlReader.parse(inputSource);
} catch (ParserConfigurationException | SAXException | IOException exception) {
throw new RuntimeException(exception);
}
}
}
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