/// <summary>
/// Create a CmdA from a string array
/// </summary>
/// <param name="script">An array of strings </param>
/// <returns>A valid Cmd or null</returns>
public static CmdA CreateFromStrings(string[] script)
{
/*
* 0 1 2 3 ..
* A=AcftType;Runway[;Pref.Runway[;Strict]] # Type 1 – default Alt Mode => AGL based
* A=AcftType;Airway # Type 2 – default Alt Mode => MSL based
* A=AcftType;MsgRelative;Alt;GS # Type 3 – default Alt Mode => MSL based; StartPos random;
* A=AcftType;MsgAbsolute;Alt;GS;Lat;Lon;Hdg # Type 4 – default Alt Mode => MSL based; StartPos defined;
*/
// must be 3 at least
if (script.Length < 3)
{
return(null); // ERROR exit
}
var acType = script[1];
var fType = AsFlightType(script[2]);
if (fType == FlightT.Invalid)
{
return(null); // ERROR exit
}
var cmd = new CmdA(acType, fType);
switch (fType)
{
case FlightT.Runway: {// this is usually not used but to have it complete
if (script.Length > 3)
{
// pref runway
cmd.RunwayPreference = script[3].Trim( ).ToUpperInvariant( ); // optional, preferred RWY
if (script.Length > 4)
{
// pref runway strict
cmd.RunwayPrefStrict = script[4].Trim( ).ToUpperInvariant( ) == "S"; // optional, preferred RWY is strict
}
}
return(cmd);
}
case FlightT.Airway:
return(cmd); // no further parameters
case FlightT.MsgRelative: {
if (script.Length < 5)
{
return(null); // ERROR exit
}
bool pass = true;
pass &= double.TryParse(script[3], out double alt);
pass &= double.TryParse(script[4], out double gs);
if (!pass)
{
return(null); // ERROR exit - number conversion error
}
cmd.StartAlt_ftMsl = alt;
cmd.StartGS_kn = gs;
return(cmd);
}
case FlightT.MsgAbsolute: {
if (script.Length < 8)
{
return(null); // ERROR exit
}
bool pass = true;
pass &= double.TryParse(script[3], out double alt);
pass &= double.TryParse(script[4], out double gs);
pass &= double.TryParse(script[5], out double lat);
pass &= double.TryParse(script[6], out double lon);
pass &= double.TryParse(script[7], out double hdg);
if (!pass)
{
return(null); // ERROR exit - number conversion error
}
cmd.StartAlt_ftMsl = alt;
cmd.StartGS_kn = gs;
cmd.StartPos_latlon = new LatLon(lat, lon);
cmd.StartBrg_degm = hdg;
return(cmd);
}
default:
return(null);
}
}
/// <summary>
/// Reads one Script file
/// NOTE: Does not check for command inconsistencies whatsoever
/// only a limited format check is done
/// </summary>
/// <param name="filename">The file to read</param>
/// <returns>A CmdList either populated or empty on Error</returns>
public static CmdList ReadCmdScript(string filename)
{
var list = new CmdList( );
if (!File.Exists(filename))
{
return(list); // ERROR return an empty list
}
using (var sr = new StreamReader(filename)) {
bool expectCmdA = true;
do
{
string buffer = sr.ReadLine( ).Trim( );
string[] x = buffer.Split(new char[] { '#' }); // cut comments
if (x.Length > 0 && x[0].Length > 0)
{
// use first part only
string[] e = x[0].Split(new char[] { '=', ';' });
if (e.Length < 2)
{
continue; // at least 2 items should be there... Cmd and Arg1
}
if (expectCmdA)
{
// start of script expected - cmd A accepted only
var a = CmdA.CreateFromStrings(e);
if (a == null)
{
return(list); // ERROR in CmdA
}
list.Enqueue(a);
expectCmdA = false; // we have it
}
else
{
// rest of script
switch (e[0].Substring(0, 1))
{
case "D":
var d = CmdD.CreateFromStrings(e);
if (d != null)
{
list.Enqueue(d);
}
break;
case "T":
var t = CmdT.CreateFromStrings(e);
if (t != null)
{
list.Enqueue(t);
}
break;
case "H":
var h = CmdH.CreateFromStrings(e);
if (h != null)
{
list.Enqueue(h);
}
break;
case "G":
var g = CmdG.CreateFromStrings(e);
if (g != null)
{
list.Enqueue(g);
}
break;
case "S":
var s = CmdS.CreateFromStrings(e);
if (s != null)
{
list.Enqueue(s);
}
break;
case "V":
var v = CmdV.CreateFromStrings(e);
if (v != null)
{
list.Enqueue(v);
}
break;
case "M":
var m = CmdM.CreateFromStrings(e);
if (m != null)
{
list.Enqueue(m);
}
break;
default:
// not supported ..
break;
}
}
}
} while (!sr.EndOfStream);
}
list.Enqueue(new CmdE( )); // MUST be the last one
return(list);
}