* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
- */
+ */
package org.wamblee.gpx;
import java.io.InputStream;
import java.util.Iterator;
+import java.util.List;
import org.dom4j.Document;
import org.dom4j.Element;
import org.wamblee.xml.XMLException;
/**
- * Parser for GPX tracks.
- *
+ * Parser for GPX tracks.
+ *
* @author Erik Brakkee
*/
public class GpxParser {
-
+
private static final String SCHEMA_RESOURCE = "gpx.xsd";
-
- public GpxParser() {
+
+ public GpxParser() {
// Empty.
}
-
- public Track parse(InputStream aIs) throws XMLException {
+
+ public Track parse(InputStream aIs) throws XMLException {
Document doc = DomUtils.convert(DomUtils.read(aIs));
return parse(doc);
}
-
+
/**
* @param doc
*/
public Track parse(Document doc) {
- Track track = new Track();
- Element root = doc.getRootElement().element("trk").element("trkseg");
- for ( Iterator i =root.elementIterator("trkpt"); i.hasNext(); ) {
- Element trkpt = (Element)i.next();
- track.addPoint(parseTrackPoint(trkpt));
+ Track result = new Track();
+ List<Element> tracks = doc.getRootElement().elements("trk");
+ if ( tracks != null ) {
+ for (Element track: tracks) {
+ List<Element> segments = track.elements("trkseg");
+ if ( segments != null ) {
+ for (Element segment: segments) {
+ parseTrackPoints(result, segment.elementIterator("trkpt"));
+ }
+ }
+ }
+ }
+
+ List<Element> routes = doc.getRootElement().elements("rte");
+ if ( routes != null ) {
+ for (Element route: routes) {
+ parseTrackPoints(result, route.elementIterator("rtept"));
+ }
+ }
+
+ return result;
+ }
+
+
+ private void parseTrackPoints(Track aTrack, Iterator<Element> aPoints) {
+ while (aPoints.hasNext()) {
+ Element point = aPoints.next();
+ aTrack.addPoint(parseTrackPoint(point));
}
- return track;
}
+
/**
* @param trkpt
*/
private TrackPoint parseTrackPoint(Element trkpt) {
- //System.out.println(trkpt.asXML() + "|\n");
+ // System.out.println(trkpt.asXML() + "|\n");
double latitude = new Double(trkpt.attributeValue("lat"));
double longitude = new Double(trkpt.attributeValue("lon"));
Element ele = trkpt.element("ele");
double elevation = 0.0;
- if ( ele != null ) {
+ if (ele != null) {
elevation = new Double(ele.getText());
}
- //System.out.println(" lat = " + lat + " lon = " + lon + " ele = " + ele);
+ // System.out.println(" lat = " + lat + " lon = " + lon + " ele = " +
+ // ele);
return new TrackPoint(latitude, longitude, elevation);
}