Clean up formatting of numbers in gpx export.

Addresses issue #299 and ensures Latitude and Longitude are formatted correctly as well. Also orders the elements in the waypoint correctly according to the schema: <ele> and <time> need to come before <name> and <desc>.
2011-02-09 10:25:28 -08:00
commit b42142f692
365 changed files with 47671 additions and 0 deletions
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2008 Google Inc.
+ * 
+ * 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 com.google.android.apps.mytracks.io;
+
+import com.google.android.apps.mytracks.content.Track;
+import com.google.android.apps.mytracks.content.Waypoint;
+import com.google.android.apps.mytracks.io.TrackWriterFactory.TrackFileFormat;
+import com.google.android.apps.mytracks.util.StringUtils;
+
+import android.location.Location;
+
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.nio.charset.Charset;
+import java.text.SimpleDateFormat;
+import java.text.DecimalFormat;
+import java.util.Date;
+import java.util.TimeZone;
+
+/**
+ * Log of one track.
+ *
+ * @author Sandor Dornbush
+ */
+public class GpxTrackWriter implements TrackFormatWriter {
+
+  static final int LATLONG_FORMAT = Location.FORMAT_DEGREES;
+  static final DecimalFormat ELEVATION_FORMAT =
+      new DecimalFormat("#.#");
+  static final SimpleDateFormat TIMESTAMP_FORMAT =
+      new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
+  static {
+    TIMESTAMP_FORMAT.setTimeZone(TimeZone.getTimeZone("UTC"));
+  }
+
+  private PrintWriter pw = null;
+  private Track track;
+
+  @Override
+  public void prepare(Track track, OutputStream out) {
+    this.track = track;
+    this.pw = new PrintWriter(out);
+  }
+
+  @Override
+  public String getExtension() {
+    return TrackFileFormat.GPX.getExtension();
+  }
+
+  @Override
+  public void writeHeader() {
+    if (pw != null) {
+      pw.format("<?xml version=\"1.0\" encoding=\"%s\" standalone=\"yes\"?>\n",
+          Charset.defaultCharset().name());
+      pw.println("<?xml-stylesheet type=\"text/xsl\" href=\"details.xsl\"?>");
+      pw.println("<gpx");
+      pw.println(" version=\"1.0\"");
+      pw.println(" creator=\"My Tracks for the G1 running Android\"");
+      pw.println(" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"");
+      pw.println(" xmlns=\"http://www.topografix.com/GPX/1/0\"");
+      pw.print(" xmlns:topografix=\"http://www.topografix.com/GPX/Private/"
+          + "TopoGrafix/0/1\"");
+      pw.print(" xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 ");
+      pw.print("http://www.topografix.com/GPX/1/0/gpx.xsd ");
+      pw.print("http://www.topografix.com/GPX/Private/TopoGrafix/0/1 ");
+      pw.println("http://www.topografix.com/GPX/Private/TopoGrafix/0/1/"
+          + "topografix.xsd\">");
+      // TODO: Author etc.
+    }
+  }
+
+  @Override
+  public void writeFooter() {
+    if (pw != null) {
+      pw.println("</gpx>");
+    }
+  }
+
+  @Override
+  public void writeBeginTrack(Location firstPoint) {
+    if (pw != null) {
+      pw.println("<trk>");
+      pw.println("<name>" + StringUtils.stringAsCData(track.getName())
+          + "</name>");
+      pw.println("<desc>" + StringUtils.stringAsCData(track.getDescription())
+          + "</desc>");
+      pw.println("<number>" + track.getId() + "</number>");
+      pw.println("<topografix:color>c0c0c0</topografix:color>");
+    }
+  }
+
+  @Override
+  public void writeEndTrack(Location lastPoint) {
+    if (pw != null) {
+      pw.println("</trk>");
+    }
+  }
+
+  @Override
+  public void writeOpenSegment() {
+    pw.println("<trkseg>");
+  }
+
+  @Override
+  public void writeCloseSegment() {
+    pw.println("</trkseg>");
+  }
+
+  @Override
+  public void writeLocation(Location l) {
+    if (pw != null) {
+      pw.println("<trkpt lat=\""
+          + Location.convert(l.getLatitude(), LATLONG_FORMAT) + "\" lon=\""
+          + Location.convert(l.getLongitude(), LATLONG_FORMAT) + "\">");
+      Date d = new Date(l.getTime());
+      pw.println("<ele>" + ELEVATION_FORMAT.format(l.getAltitude()) + "</ele>");
+      pw.println("<time>" + TIMESTAMP_FORMAT.format(d) + "</time>");
+      pw.println("</trkpt>");
+    }
+  }
+
+  @Override
+  public void close() {
+    if (pw != null) {
+      pw.close();
+      pw = null;
+    }
+  }
+
+  @Override
+  public void writeWaypoint(Waypoint waypoint) {
+    if (pw != null) {
+      // TODO: The gpx spec says waypoints should come *before* tracks
+      Location l = waypoint.getLocation();
+      if (l != null) {
+        pw.println("<wpt lat=\""
+            + Location.convert(l.getLatitude(), LATLONG_FORMAT) + "\" lon=\""
+            + Location.convert(l.getLongitude(), LATLONG_FORMAT) + "\">");
+        pw.println("<ele>" + ELEVATION_FORMAT.format(l.getAltitude()) + "</ele>");
+        pw.println("<time>" + TIMESTAMP_FORMAT.format(l.getTime()) + "</time>");
+        pw.println("<name>" + StringUtils.stringAsCData(waypoint.getName())
+            + "</name>");
+        pw.println("<desc>"
+            + StringUtils.stringAsCData(waypoint.getDescription()) + "</desc>");
+        pw.println("</wpt>");
+      }
+    }
+  }
+}