ATTransport.Program.LoadData C# (CSharp) Method

        private static void LoadData()
        {
            //Load Routes.
            var routeLines = File.ReadAllLines("google_transit/routes.txt").ToList();

            //Remove header line.
            routeLines.RemoveAt(0);

            foreach (var line in routeLines)
            {
                var lineParts = Regex.Split(line, ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)");
                routes.Add(new Route
                {
                    RouteId = lineParts[4],
                    RouteShortName = lineParts[6],
                    Trips = new List<Trip>()
                });
            }

            //A route has many trips (e.g. The same number runs multiple times).
            var tripLines = File.ReadAllLines("google_transit/trips.txt").ToList();
            tripLines.RemoveAt(0);

            //Use a dictionary since it will be WAY faster later to find all these trips when we have to add stops to them.
            Dictionary<string, Trip> tripLookup = new Dictionary<string, Trip>();

            foreach (var line in tripLines)
            {
                var lineParts = Regex.Split(line, ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)");
                Trip newTrip = new Trip { RouteId = lineParts[1], TripId = lineParts[6], StopTimes = new List<TripStopTime>() };
                routes.Single(x => x.RouteId == newTrip.RouteId).Trips.Add(newTrip);
                tripLookup.Add(newTrip.TripId, newTrip);
            }

            //For each trip, load in the time they hit each stop.
            var stopTimeLines = File.ReadAllLines("google_transit/stop_times.txt").ToList();
            stopTimeLines.RemoveAt(0);

            foreach (var line in stopTimeLines)
            {
                var lineParts = Regex.Split(line, ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)");

                //Sometimes the trip ends after midnight. (Or sometimes longer), so just skip these ones for now.
                if (int.Parse(lineParts[2].Split(':')[0]) > 23)
                {
                    continue;
                }

                TripStopTime stopTime = new TripStopTime { TripId = lineParts[0], StopId = lineParts[3], Time = DateTime.Parse(lineParts[2]) }; //Z appended so it comes through as UTC.
                tripLookup[stopTime.TripId].StopTimes.Add(stopTime);
            }

            //Load stop data.
            var stopLines = File.ReadAllLines("google_transit/stops.txt").ToList();
            stopLines.RemoveAt(0);

            foreach (var line in stopLines)
            {
                var lineParts = Regex.Split(line, ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)");

                Stop newStop = new Stop { StopId = lineParts[3], StopLat = double.Parse(lineParts[0]), StopLng = double.Parse(lineParts[2]) };
                stopLookup.Add(newStop.StopId, newStop);
            }
        }