AttoparserTest.java

package com.solrstart;

import org.attoparser.IMarkupHandler;
import org.attoparser.IMarkupParser;
import org.attoparser.MarkupParser;
import org.attoparser.ParseException;
import org.attoparser.config.ParseConfiguration;
import org.attoparser.discard.DiscardMarkupHandler;
import org.attoparser.select.NodeSelectorMarkupHandler;
import org.attoparser.simple.AbstractSimpleMarkupHandler;
import org.attoparser.simple.SimplifierMarkupHandler;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.Reader;
import java.util.Map;

public class AttoparserTest {

    private static class ElementHandler extends AbstractSimpleMarkupHandler {
        @Override
        public void handleOpenElement(String elementName, Map<String, String> attributes, int line, int col) throws ParseException {
            super.handleOpenElement(elementName, attributes, line, col);
            handleElement(elementName, attributes, line);
        }

        @Override
        public void handleStandaloneElement(String elementName, Map<String, String> attributes, boolean minimized, int line, int col) throws ParseException {
            super.handleStandaloneElement(elementName, attributes, minimized, line, col);
            handleElement(elementName, attributes, line);
        }

        private void handleElement(String elementName, Map<String, String> attributes, int line) {
            System.out.printf("Element: %s at line %d\n", elementName, line);
            if (attributes != null) {
                for (String attribName : attributes.keySet()) {
                    System.out.printf("    %s=%s\n", attribName, attributes.get(attribName));
                }
            }
            System.out.println();
        }

    }

    public static void main(String[] args) throws FileNotFoundException, ParseException {
        // Open file (managed-schema)
        // File all elements of type <filter>
        // Enumerate all attributes it has

        Reader reader = new BufferedReader(new FileReader(args[0]));

        final IMarkupHandler simplifyingHandler = new SimplifierMarkupHandler(new ElementHandler());
        final IMarkupHandler nodeSelectingHandler = new NodeSelectorMarkupHandler(simplifyingHandler, new DiscardMarkupHandler(), "filter");

        final IMarkupParser parser = new MarkupParser(ParseConfiguration.xmlConfiguration());
        parser.parse(reader, nodeSelectingHandler);

    }
}