private bool IsTimeInRange(ref TripTimesModel trip, DateTime timeStart, DateTime timeEnd)
{
DateTime tempEnd = timeEnd;
bool multiDays = false;
DateTime secBeforeMidnight = timeStart.Date.Add(new TimeSpan(23, 59, 59));
if (timeEnd > secBeforeMidnight)
{
multiDays = true;
tempEnd = secBeforeMidnight;
}
if (trip.departure_time >= timeStart.TimeOfDay && trip.departure_time <= tempEnd.TimeOfDay)
{
return(true);
}
if (multiDays)
{
if (trip.departure_time <= timeEnd.TimeOfDay)
{
trip.departure_time = trip.departure_time.Add(new TimeSpan(1, 0, 0, 0));
return(true);
}
}
return(false);
}
protected List <TripTimesModel> GetTripsFromStopId(OpenArchive gtfsArchive, int stopId, DateTime timeStart, DateTime timeEnd)
{
if (timeStart > timeEnd)
{
throw new ArgumentException("The end time must be greater than or equal to the start time");
}
else if (timeEnd.Subtract(timeStart).TotalDays > 1.0)
{
throw new ArgumentException("The start and end dates must be less than 1 day appart");
}
if (this.timeStringList == null)
{
this.timeStringList = new List <StringEntry>();
using (Stream timeStream = gtfsArchive.zip.GetEntry("google_transit/stop_times.csv").Open())
{
StreamReader timeReader = new StreamReader(timeStream);
//skip header
timeReader.ReadLine();
while (timeReader.EndOfStream == false)
{
string timeLine = timeReader.ReadLine();
this.timeStringList.Add(new StringEntry(timeLine));
}
}
}
//binary search this.timeStringList for the valid entries
StringEntry stopKey = new StringEntry(stopId.ToString());
int index = this.timeStringList.BinarySearch(stopKey);
if (index < 0 || index > this.timeStringList.Count())
{
throw new KeyNotFoundException("Failed to find a entry for the stop id:" + stopId.ToString() + " in stop_times.csv");
}
//find the start of this section
while (this.timeStringList[index - 1].CompareTo(stopKey) == 0)
{
--index;
}
List <TripTimesModel> tripsAtStop = new List <TripTimesModel>();
//populate the return entries
while (this.timeStringList[index].CompareTo(stopKey) == 0)
{
TripTimesModel tripTime = new TripTimesModel();
string entry = this.timeStringList[index].Entry;
string[] entries = entry.Split(',');
tripTime.stop_id = int.Parse(entries[0]);
tripTime.departure_time = GetTimeSpanFromString(entries[1]);
tripTime.trip_id = int.Parse(entries[2]);
bool isInRange = IsTimeInRange(ref tripTime, timeStart, timeEnd);
if (isInRange)
{
IsTimeInRange(ref tripTime, timeStart, timeEnd);
tripsAtStop.Add(tripTime);
}
++index;
}
return(tripsAtStop);
}
