parseKML.java

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package armyc2.c2sd.renderer.test2;

import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.CharacterData;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import java.util.ArrayList;

/**
 *
 * @author Michael Deutch
 */
public final class parseKML {

    /**
     * @param kmlRecords
     * @param coordStrings new ArrayList passed by the caller to hold the
     * coordinates
     * @throws Exception
     */
//    protected static void parse(String kmlRecords, ArrayList<String> coordStrings) throws Exception {
//
//        DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
//        InputSource is = new InputSource();
//        is.setCharacterStream(new StringReader(kmlRecords));
//        Document doc = db.parse(is);
//        NodeList nodes = doc.getElementsByTagName("LineString");
//        for (int i = 0; i < nodes.getLength(); i++) {
//            Element element = (Element) nodes.item(i);
//
//            NodeList alt = element.getElementsByTagName("altitudeMode");
//            Element line = (Element) alt.item(0);
//            System.out.println("altitude mode: " + getCharacterDataFromElement(line));
//
//            NodeList coords = element.getElementsByTagName("coordinates");
//            line = (Element) coords.item(0);
//            System.out.println("coordinates: " + getCharacterDataFromElement(line));
//            coordStrings.add(getCharacterDataFromElement(line));
//        }
//        return;
//    }

    private static String getCharacterDataFromElement(Element e) {
        Node child = e.getFirstChild();
        if (child instanceof CharacterData) {
            CharacterData cd = (CharacterData) child;
            return cd.getData();
        }
        return "";
    }

    protected static void parseLLTR(String kmlRecords, ArrayList<String> coordStrings) throws Exception {
        DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(kmlRecords));
        Document doc = db.parse(is);
        NodeList nodes = doc.getElementsByTagName("outerBoundaryIs");
        for (int i = 0; i < nodes.getLength(); i++) {
            Element element = (Element) nodes.item(i);

            //NodeList alt = element.getElementsByTagName("altitudeMode");
            //Element line = (Element) alt.item(0);
            //System.out.println("altitude mode: " + getCharacterDataFromElement(line));
            NodeList coords = element.getElementsByTagName("coordinates");
            Element line = (Element) coords.item(0);
            System.out.println("coordinates: " + getCharacterDataFromElement(line));
            coordStrings.add(getCharacterDataFromElement(line));
        }
        //return;
    }

}