/// <summary>
/// Reads one file to fill the db
/// </summary>
/// <param name="db">The navDatabase to fill</param>
/// <param name="fName">The qualified filename</param>
/// <returns>The result string, either empty or error</returns>
private static string ReadDbFile(ref navDatabase db, string fName)
{
var icaoPre = Path.GetFileNameWithoutExtension(fName);
string ret = "";
using (var sr = new StreamReader(fName)) {
string buffer = sr.ReadLine( ); // header line
buffer = sr.ReadLine( ); // header line 2
buffer = sr.ReadLine( );
while (!sr.EndOfStream)
{
if (buffer.StartsWith("99"))
{
break;
}
var rec = FromNative(buffer);
if (rec != null && rec.IsValid)
{
ret += db.Add(rec); // collect adding information
}
buffer = sr.ReadLine( );
}
//
}
return(ret);
}
/// <summary>
/// Reads the XPlane 11 earth_nav.dat file and populates the supplied database
/// </summary>
/// <param name="db">The navDatabase to fill</param>
/// <param name="fName">The file to read</param>
/// <returns>The result string, either empty or error</returns>
public static string ReadDb(ref navDatabase db, string fName)
{
if (!File.Exists(fName))
{
return($"File does not exist\n");
}
return(ReadDbFile(ref db, fName));
}