/// <summary>
/// Merges two collections into one.
/// </summary>
/// <param name="other">The other collection that should be merged.</param>
public void MergeCollections(RoutesInfo other)
{
foreach (var item in other)
{
var info = item.Value;
info.ID = Count; // Reindex the item.
string key;
while (list.ContainsKey(key = DataFeed.RandomString()))
{
; // We can index the item using some random string, since this identificator is only used while initialization. Both data are already initialized.
}
list.Add(key, info);
}
other = null;
}
/// <summary>
/// Initializes object using GTFS data feed.
/// </summary>
/// <param name="stops">Stops.</param>
/// <param name="stopTimes">Stop Times.</param>
/// <param name="trips">Trip.</param>
public GtfsStopTimes(System.IO.StreamReader stopTimes, Trips trips, Stops stops)
{
// Get order of field names.
string[] fieldNames = stopTimes.ReadLine().Split(',');
Dictionary <string, int> dic = new Dictionary <string, int>();
for (int i = 0; i < fieldNames.Length; i++)
{
dic.Add(fieldNames[i].Replace("\"", ""), i);
}
// These fields are required for our purpose.
if (!dic.ContainsKey("arrival_time"))
{
throw new FormatException("Arrival time field name missing.");
}
if (!dic.ContainsKey("departure_time"))
{
throw new FormatException("Departure time field name missing.");
}
if (!dic.ContainsKey("trip_id"))
{
throw new FormatException("Trip ID field name missing.");
}
if (!dic.ContainsKey("stop_id"))
{
throw new FormatException("Stop ID field name missing.");
}
while (!stopTimes.EndOfStream)
{
IList <string> tokens = GtfsDataFeed.SplitGtfs(stopTimes.ReadLine());
Trips.Trip trip = null;
try
{
trip = trips[tokens[dic["trip_id"]]];
}
catch
{
DataFeed.LogError($"Preprocessor tried to parse a stop-time, but the trip with ID { tokens[dic["trip_id"]] } does not exist. Skipping this item to recover the parsing process.");
continue;
}
if (trip.StopTimes.Count == 0) // Set departure time of the trip.
{
trip.DepartureTime = ConvertTimeToSecondsSinceMidnight(tokens[dic["departure_time"]]);
}
Stops.Stop stop = null;
try
{
stop = stops[tokens[dic["stop_id"]]];
}
catch
{
DataFeed.LogError($"Preprocessor tried to parse a stop-time to the trip { trip.ID }, line { trip.RouteInfo.ShortName } in direction to { trip.Headsign }, but the stop with ID { tokens[dic["stop_id"]] } does not exist. Skipping this item to recover the parsing process.");
continue;
}
StopTime st = new StopTime(trip, ConvertTimeToSecondsSinceMidnight(tokens[dic["arrival_time"]]) - trip.DepartureTime,
ConvertTimeToSecondsSinceMidnight(tokens[dic["departure_time"]]) - trip.DepartureTime, stop);
st.Trip.StopTimes.Add(st);
if (!st.Stop.ThroughgoingRoutes.Contains(st.Trip.RouteInfo))
{
st.Stop.ThroughgoingRoutes.Add(st.Trip.RouteInfo);
}
list.Add(st);
}
stopTimes.Dispose();
}
