1 files changed, 73 insertions, 0 deletions
diff --git a/src/org/traccar/web/GpxBuilder.java b/src/org/traccar/web/GpxBuilder.java
new file mode 100644
index 000000000..bac7182dc
--- /dev/null
+++ b/src/org/traccar/web/GpxBuilder.java
@@ -0,0 +1,73 @@
+/*
+ * 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.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormatter;
+import org.joda.time.format.ISODateTimeFormat;
+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>";
+
+    private static final DateTimeFormatter DATE_FORMAT = ISODateTimeFormat.dateTime();
+
+    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(),
+                DATE_FORMAT.print(new DateTime(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();
+    }
+
+}