/// <summary>
/// gets routes from gpsd log file
/// </summary>
/// <param name="gpsdLogFile"></param>
/// <param name="start">start time(UTC) of route, null to read from very start</param>
/// <param name="end">end time(UTC) of route, null to read to the very end</param>
/// <param name="maxPositionDilutionOfPrecision">max value of PositionDilutionOfPrecision, null to get all</param>
/// <returns></returns>
public static IEnumerable <List <GpsLog> > GetRoutesFromMobileLog(string gpsdLogFile, DateTime?start, DateTime?end, double?maxPositionDilutionOfPrecision)
{
#if SQLite
using (SQLiteConnection cn = new SQLiteConnection())
{
#if !MONO
cn.ConnectionString = string.Format("Data Source=\"{0}\";FailIfMissing=True;", gpsdLogFile);
#else
cn.ConnectionString = string.Format("Version=3,URI=file://{0},FailIfMissing=True", gpsdLogFile);
#endif
cn.Open();
{
using (DbCommand cmd = cn.CreateCommand())
{
cmd.CommandText = "SELECT * FROM GPS ";
int initLenght = cmd.CommandText.Length;
if (start.HasValue)
{
cmd.CommandText += "WHERE TimeUTC >= @t1 ";
SQLiteParameter lookupValue = new SQLiteParameter("@t1", start);
cmd.Parameters.Add(lookupValue);
}
if (end.HasValue)
{
if (cmd.CommandText.Length <= initLenght)
{
cmd.CommandText += "WHERE ";
}
else
{
cmd.CommandText += "AND ";
}
cmd.CommandText += "TimeUTC <= @t2 ";
SQLiteParameter lookupValue = new SQLiteParameter("@t2", end);
cmd.Parameters.Add(lookupValue);
}
if (maxPositionDilutionOfPrecision.HasValue)
{
if (cmd.CommandText.Length <= initLenght)
{
cmd.CommandText += "WHERE ";
}
else
{
cmd.CommandText += "AND ";
}
cmd.CommandText += "PositionDilutionOfPrecision <= @p3 ";
SQLiteParameter lookupValue = new SQLiteParameter("@p3", maxPositionDilutionOfPrecision);
cmd.Parameters.Add(lookupValue);
}
using (DbDataReader rd = cmd.ExecuteReader())
{
List <GpsLog> points = new List <GpsLog>();
while (rd.Read())
{
GpsLog log = new GpsLog();
{
log.TimeUTC = (DateTime)rd["TimeUTC"];
log.SessionCounter = (long)rd["SessionCounter"];
log.Delta = rd["Delta"] as double?;
log.Speed = rd["Speed"] as double?;
log.SeaLevelAltitude = rd["SeaLevelAltitude"] as double?;
log.EllipsoidAltitude = rd["EllipsoidAltitude"] as double?;
log.SatellitesInView = rd["SatellitesInView"] as System.Byte?;
log.SatelliteCount = rd["SatelliteCount"] as System.Byte?;
log.Position = new PointLatLng((double)rd["Lat"], (double)rd["Lng"]);
log.PositionDilutionOfPrecision = rd["PositionDilutionOfPrecision"] as double?;
log.HorizontalDilutionOfPrecision = rd["HorizontalDilutionOfPrecision"] as double?;
log.VerticalDilutionOfPrecision = rd["VerticalDilutionOfPrecision"] as double?;
log.FixQuality = (FixQuality)((byte)rd["FixQuality"]);
log.FixType = (FixType)((byte)rd["FixType"]);
log.FixSelection = (FixSelection)((byte)rd["FixSelection"]);
}
if (log.SessionCounter == 0 && points.Count > 0)
{
List <GpsLog> ret = new List <GpsLog>(points);
points.Clear();
{
yield return(ret);
}
}
points.Add(log);
}
if (points.Count > 0)
{
List <GpsLog> ret = new List <GpsLog>(points);
points.Clear();
{
yield return(ret);
}
}
points.Clear();
points = null;
rd.Close();
}
}
}
cn.Close();
}
#else
return(null);
#endif
}
/// <summary>
/// gets routes from gpsd log file
/// </summary>
/// <param name="gpsdLogFile"></param>
/// <param name="start">start time(UTC) of route, null to read from very start</param>
/// <param name="end">end time(UTC) of route, null to read to the very end</param>
/// <param name="maxPositionDilutionOfPrecision">max value of PositionDilutionOfPrecision, null to get all</param>
/// <returns></returns>
public static IEnumerable<List<GpsLog>> GetRoutesFromMobileLog(string gpsdLogFile, DateTime? start, DateTime? end, double? maxPositionDilutionOfPrecision)
{
#if SQLite
using(SQLiteConnection cn = new SQLiteConnection())
{
#if !MONO
cn.ConnectionString = string.Format("Data Source=\"{0}\";FailIfMissing=True;", gpsdLogFile);
#else
cn.ConnectionString = string.Format("Version=3,URI=file://{0},FailIfMissing=True", gpsdLogFile);
#endif
cn.Open();
{
using(DbCommand cmd = cn.CreateCommand())
{
cmd.CommandText = "SELECT * FROM GPS ";
int initLenght = cmd.CommandText.Length;
if(start.HasValue)
{
cmd.CommandText += "WHERE TimeUTC >= @t1 ";
SQLiteParameter lookupValue = new SQLiteParameter("@t1", start);
cmd.Parameters.Add(lookupValue);
}
if(end.HasValue)
{
if(cmd.CommandText.Length <= initLenght)
{
cmd.CommandText += "WHERE ";
}
else
{
cmd.CommandText += "AND ";
}
cmd.CommandText += "TimeUTC <= @t2 ";
SQLiteParameter lookupValue = new SQLiteParameter("@t2", end);
cmd.Parameters.Add(lookupValue);
}
if(maxPositionDilutionOfPrecision.HasValue)
{
if(cmd.CommandText.Length <= initLenght)
{
cmd.CommandText += "WHERE ";
}
else
{
cmd.CommandText += "AND ";
}
cmd.CommandText += "PositionDilutionOfPrecision <= @p3 ";
SQLiteParameter lookupValue = new SQLiteParameter("@p3", maxPositionDilutionOfPrecision);
cmd.Parameters.Add(lookupValue);
}
using(DbDataReader rd = cmd.ExecuteReader())
{
List<GpsLog> points = new List<GpsLog>();
while(rd.Read())
{
GpsLog log = new GpsLog();
{
log.TimeUTC = (DateTime)rd["TimeUTC"];
log.SessionCounter = (long)rd["SessionCounter"];
log.Delta = rd["Delta"] as double?;
log.Speed = rd["Speed"] as double?;
log.SeaLevelAltitude = rd["SeaLevelAltitude"] as double?;
log.EllipsoidAltitude = rd["EllipsoidAltitude"] as double?;
log.SatellitesInView = rd["SatellitesInView"] as System.Byte?;
log.SatelliteCount = rd["SatelliteCount"] as System.Byte?;
log.Position = new PointLatLng((double)rd["Lat"], (double)rd["Lng"]);
log.PositionDilutionOfPrecision = rd["PositionDilutionOfPrecision"] as double?;
log.HorizontalDilutionOfPrecision = rd["HorizontalDilutionOfPrecision"] as double?;
log.VerticalDilutionOfPrecision = rd["VerticalDilutionOfPrecision"] as double?;
log.FixQuality = (FixQuality)((byte)rd["FixQuality"]);
log.FixType = (FixType)((byte)rd["FixType"]);
log.FixSelection = (FixSelection)((byte)rd["FixSelection"]);
}
if(log.SessionCounter == 0 && points.Count > 0)
{
List<GpsLog> ret = new List<GpsLog>(points);
points.Clear();
{
yield return ret;
}
}
points.Add(log);
}
if(points.Count > 0)
{
List<GpsLog> ret = new List<GpsLog>(points);
points.Clear();
{
yield return ret;
}
}
points.Clear();
points = null;
rd.Close();
}
}
}
cn.Close();
}
#else
return null;
#endif
}
