altoslib: Don't write KML record when height data is missing

This avoids a crash dealing with corrupted flight data

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/altoslib/AltosKML.java b/altoslib/AltosKML.java
index aa98f0e69bf78a07de44940ce784be9b3bfa488a..d5248a17377be645fab9164c40b5ebaa1ea05cc9 100644 (file)
--- a/altoslib/AltosKML.java
+++ b/altoslib/AltosKML.java
@@ -308,19 +308,23 @@ public class AltosKML implements AltosWriter {
                stats = new AltosFlightStats(series);
                cal_data = series.cal_data();
                start();
-               folder_start("Barometric Altitude");
-               path_style_start("baro", style_color(0));
-               out.printf("Barometric Altitude\n");
-               out.printf("Max height: %s\n", AltosConvert.height.show(6, stats.max_height));
-               path_style_end();
-               path_start("Barometric Altitude", "baro");
-               for (AltosGPSTimeValue gtv : series.gps_series)
-                       write(gtv.gps, baro_altitude(series, gtv.time));
-               path_end();
-               for (AltosTimeValue tv : series.state_series) {
-                       write_point(tv, false);
+               if (series.height_series != null) {
+                       folder_start("Barometric Altitude");
+                       path_style_start("baro", style_color(0));
+                       out.printf("Barometric Altitude\n");
+                       out.printf("Max height: %s\n", AltosConvert.height.show(6, stats.max_height));
+                       path_style_end();
+                       path_start("Barometric Altitude", "baro");
+                       for (AltosGPSTimeValue gtv : series.gps_series)
+                               write(gtv.gps, baro_altitude(series, gtv.time));
+                       path_end();
+                       if (series.state_series != null) {
+                               for (AltosTimeValue tv : series.state_series) {
+                                       write_point(tv, false);
+                               }
+                       }
+                       folder_end();
                }
-               folder_end();
                folder_start("GPS Altitude");
                path_style_start("gps", style_color(1));
                out.printf("GPS Altitude");
@@ -330,8 +334,10 @@ public class AltosKML implements AltosWriter {
                for (AltosGPSTimeValue gtv : series.gps_series)
                        write(gtv.gps, gtv.gps.alt);
                path_end();
-               for (AltosTimeValue tv : series.state_series) {
-                       write_point(tv, true);
+               if (series.state_series != null) {
+                       for (AltosTimeValue tv : series.state_series) {
+                               write_point(tv, true);
+                       }
                }
                folder_end();
                end();