Ticket #1519: nmea-stabilization.patch

src/org/openstreetmap/josm/io/NmeaReader.java

@@ -161 +161 @@
         }
 
         private LatLon parseLatLon(String[] e) throws NumberFormatException {
-                String widthNorth = e[GPRMC.WIDTH_NORTH.position];
-                String lengthEast = e[GPRMC.LENGTH_EAST.position];
+                String widthNorth = e[GPRMC.WIDTH_NORTH.position].trim();
+                String lengthEast = e[GPRMC.LENGTH_EAST.position].trim();
                 if ("".equals(widthNorth) || "".equals(lengthEast)) {
                         return null;
                 }
 
-                int latdeg = Integer.parseInt(widthNorth.substring(0, 2));
-                double latmin = Double.parseDouble(widthNorth.substring(2));
+                // The format is xxDDLL.LLLL
+                // xx optional whitespace
+                // DD (int) degres
+                // LL.LLLL (double) latidude
+                int latdegsep = widthNorth.indexOf('.') - 2;
+                if (latdegsep < 0) {
+                        return null;
+                }
+                int latdeg = Integer.parseInt(widthNorth.substring(0, latdegsep));
+                double latmin = Double.parseDouble(widthNorth.substring(latdegsep));
                 double lat = latdeg + latmin / 60;
                 if ("S".equals(e[GPRMC.WIDTH_NORTH_NAME.position])) {
                         lat = -lat;
                 }       
 
-                int londeg = Integer.parseInt(lengthEast.substring(0, 3));
-                double lonmin = Double.parseDouble(lengthEast.substring(3));
+                int londegsep = lengthEast.indexOf('.') - 2;
+                if (londegsep < 0) {
+                        return null;
+                }
+                int londeg = Integer.parseInt(lengthEast.substring(0, londegsep));
+                double lonmin = Double.parseDouble(lengthEast.substring(londegsep));
                 double lon = londeg + lonmin / 60;
                 if ("W".equals(e[GPRMC.LENGTH_EAST_NAME.position])) {
                         lon = -lon;