do not crash

src/main/java/fr/u_paris/gla/project/idfm/CSVStreamSchedulesProvider.java

@@ -4,7 +4,6 @@ import java.util.Arrays;
 import java.util.Iterator;
 
 import fr.u_paris.gla.project.io.ScheduleFormat;
-import java.text.MessageFormat;
 import java.text.NumberFormat;
 import java.util.Collections;
 import java.util.HashMap;
@@ -14,27 +13,12 @@ import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 
-import fr.u_paris.gla.project.utils.GPS;
-
 public class CSVStreamSchedulesProvider {
-
-    /*
-     * private static final NumberFormat GPS_FORMATTER = ScheduleFormat
-     * .getGPSFormatter();
-     */
     private static final NumberFormat MINUTES_SECOND_FORMATTER = NumberFormat
             .getInstance(Locale.ENGLISH);
     static {
         MINUTES_SECOND_FORMATTER.setMinimumIntegerDigits(2);
     }
-    /** Number of seconds in a minute. */
-    private static final int SECONDS_IN_MINUTES = 60;
-    private static final long SECONDS_IN_HOURS = 3_600;
-    // Magically chosen values
-    /** Maximal speed in km/h */
-    private static final double MAX_SPEED = 5;
-    /** Distance to reach maximal speed in km */
-    private static final double TWO_ACCELERATION_DISTANCE = 0.2;
 
     private String[] line = new String[ScheduleFormat.NUMBER_COLUMNS];
 
@@ -106,8 +90,15 @@ public class CSVStreamSchedulesProvider {
                 }
                 TraceEntry trace = this.currentTrace.next();
                 this.currentPath = trace.getPaths().iterator();
+
                 this.line[ScheduleFormat.LINE_INDEX] = trace.lname;
-                this.line[ScheduleFormat.TERMINUS_INDEX] = trace.getTerminus().get(0);
+
+                // Write terminus
+                List<String> terminus = trace.getTerminus();
+                if (!terminus.isEmpty()) {
+                    this.line[ScheduleFormat.TERMINUS_INDEX] = terminus.get(0);
+                }
+
                 this.lineSegments.clear();
             }
             List<StopEntry> path = this.currentPath.next();

src/main/java/fr/u_paris/gla/project/idfm/IDFMNetworkExtractor.java

@@ -60,7 +60,8 @@ public class IDFMNetworkExtractor {
      * Main entry point for the extractor of IDF mobilite data into a network as
      * defined by this application.
      *
-     * @param args the arguments (expected one for the destination file)
+     * @param args
+     *             the arguments (expected one for the destination file)
      */
     public static void main(String[] args) {
 
@@ -89,6 +90,7 @@ public class IDFMNetworkExtractor {
 
         CSVStreamProvider provider = new CSVStreamProvider(traces.values().iterator());
 
+        // Write into args[0]
         try {
             CSVTools.writeCSVToFile(args[0], Stream.iterate(provider.next(),
                     t -> provider.hasNext(), t -> provider.next()));
@@ -103,6 +105,7 @@ public class IDFMNetworkExtractor {
         tmp.getTerminus()
                 .forEach(m -> LOGGER.log(Level.INFO, m));
 
+        // Write into args[1]
         try {
             CSVTools.writeCSVToFile(args[1], Stream.iterate(providerschedules.next(),
                     t -> providerschedules.hasNext(), t -> providerschedules.next()));
@@ -153,6 +156,8 @@ public class IDFMNetworkExtractor {
                 Double.parseDouble(line[IDFM_STOPS_LON_INDEX]),
                 Double.parseDouble(line[IDFM_STOPS_LAT_INDEX]));
         String rid = line[IDFM_STOPS_RID_INDEX];
+
+        // Add terminus to the traces
         if (traces.keySet().contains(rid)) {
             extractTerminus(line[IDFM_STOPS_SCHEDULES_INDEX]).forEach(t -> traces.get(rid).addTerminus(t));
         }
@@ -215,14 +220,13 @@ public class IDFMNetworkExtractor {
         return all;
     }
 
-    private static List<String> extractTerminus(String pathsJSON) {
+    private static List<String> extractTerminus(String JSON) {
         List<String> all = new ArrayList<>();
         try {
-            JSONArray schedules = new JSONArray(pathsJSON);
+            JSONArray schedules = new JSONArray(JSON);
             for (int i = 0; i < schedules.length(); i++) {
                 JSONObject stop = schedules.getJSONObject(i);
                 String terminus = stop.getString("from");
-
                 all.add(terminus);
             }
         } catch (
@@ -230,7 +234,7 @@ public class IDFMNetworkExtractor {
         JSONException e) {
             // Ignoring invalid element!
             LOGGER.log(Level.FINE, e,
-                    () -> MessageFormat.format("Invalid json element {0}", pathsJSON)); //$NON-NLS-1$
+                    () -> MessageFormat.format("Invalid json element {0}", JSON)); //$NON-NLS-1$
         }
 
         return all;