KMLImporter.java

/*
    GNU General Public License
    CacheWolf is a software for PocketPC, Win and Linux that
    enables paperless caching.
    It supports the sites geocaching.com and opencaching.de

    Copyright (C) 2006  CacheWolf development team
	See http://www.cachewolf.de/ for more information.
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 of the License.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
package CacheWolf.imp;

import CacheWolf.database.CWPoint;
import ewe.io.FileReader;
import ewe.io.Reader;
import ewe.sys.Convert;
import ewe.sys.Vm;
import ewe.util.StringTokenizer;
import ewe.util.Vector;
import ewesoft.xml.MinML;
import ewesoft.xml.sax.AttributeList;

/**
 * Class to import coordinates from a KML file generated from
 * google earth.
 * it looks for <placemark><MultiGeometry><LineString><coordinates>
 * and gathers all coordinated in a vector
 * @author Bilbowolf
 *
 */
public class KMLImporter extends MinML {

    public Vector points = new Vector();
    private CWPoint point = new CWPoint();
    private String file = "";
    String strData = "";
    private int status = 0;
    private static int MultiGeometry = 1;
    private static int LineString = 2;
    private static int coordinates = 3;

    public KMLImporter(String file) {
	this.file = file;
    }

    public void importFile() {
	try {
	    Reader r;
	    Vm.showWait(true);
	    r = new FileReader(file);
	    parse(r);
	    r.close();
	    Vm.showWait(false);
	} catch (Exception e) {
	    Vm.showWait(false);
	}
    }

    public Vector getPoints() {
	return points;
    }

    public void startElement(String name, AttributeList atts) {
	strData = "";
	if (name.equals("MultiGeometry"))
	    status = MultiGeometry;
	if (name.equals("LineString") && status == MultiGeometry)
	    status = LineString;
	if (name.equals("coordinates") && status == LineString)
	    status = coordinates;
    }

    public void endElement(String name) {
	if (name.equals("coordinates") && status == coordinates) {
	    parseCoordinatesLine();
	    //10.09052,49.78188000000001,0
	}
	if (name.equals("LineString") && status == coordinates)
	    status = LineString;
	if (name.equals("MultiGeometry") && status == LineString)
	    status = 0;
    }

    public void characters(char[] ch, int start, int length) {
	String chars = new String(ch, start, length);
	strData += chars;
    }

    private void parseCoordinatesLine() {
	StringTokenizer exBlock = new StringTokenizer(strData, " ");
	StringTokenizer numbers;
	String lat = "";
	String lon = "";

	String test = "";

	while (exBlock.hasMoreTokens()) {
	    test = exBlock.nextToken();
	    numbers = new StringTokenizer(test, ",");
	    lon = numbers.nextToken();
	    lat = numbers.nextToken();
	    point = new CWPoint(Convert.parseDouble(lat), Convert.parseDouble(lon));
	    points.add(point);
	}
    }
}