/* * Copyright 2016 Anton Tananaev (anton@traccar.org) * Copyright 2016 Andrey Kunitsyn (andrey@traccar.org) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * 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.traccar.web; import java.util.Collection; import org.traccar.helper.DateUtil; import org.traccar.helper.UnitsConverter; import org.traccar.model.Position; public class GpxBuilder { private StringBuilder builder = new StringBuilder(); private static final String HEADER = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>" + "<gpx xmlns=\"http://www.topografix.com/GPX/1/1\" creator=\"Traccar\" version=\"1.1\" " + "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" " + "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 " + "http://www.topografix.com/GPX/1/1/gpx.xsd\"><trk>\n"; private static final String NAME = "<name>%1$s</name><trkseg>%n"; private static final String POINT = "<trkpt lat=\"%1$f\" lon=\"%2$f\">" + "<time>%3$s</time>" + "<geoidheight>%4$f</geoidheight>" + "<course>%5$f</course>" + "<speed>%6$f</speed>" + "</trkpt>%n"; private static final String FOOTER = "</trkseg></trk></gpx>"; public GpxBuilder() { builder.append(HEADER); builder.append("<trkseg>\n"); } public GpxBuilder(String name) { builder.append(HEADER); builder.append(String.format(NAME, name)); } public void addPosition(Position position) { builder.append(String.format(POINT, position.getLatitude(), position.getLongitude(), DateUtil.formatDate(position.getFixTime()), position.getAltitude(), position.getCourse(), UnitsConverter.mpsFromKnots(position.getSpeed()))); } public void addPositions(Collection<Position> positions) { for (Position position : positions) { addPosition(position); } } public String build() { builder.append(FOOTER); return builder.toString(); } }