static asFileType
DetectFileType(const TCHAR *line)
{
if (string_after_prefix_ci(line, _T("INCLUDE=")) ||
string_after_prefix_ci(line, _T("TYPE=")))
return ftTNP;
const TCHAR *p = string_after_prefix_ci(line, _T("AC"));
if (p != NULL && (string_is_empty(p) || *p == _T(' ')))
return ftOpenAir;
return ftUnknown;
}
static bool
ParseArcTNP(const TCHAR *Text, TempAirspaceType &temp_area)
{
if (temp_area.points.empty())
return false;
// (ANTI-)CLOCKWISE RADIUS=34.95 CENTRE=N523333 E0131603 TO=N522052 E0122236
GeoPoint from = temp_area.points.back();
const TCHAR* parameter;
if ((parameter = _tcsstr(Text, _T(" "))) == NULL)
return false;
if ((parameter = string_after_prefix_ci(parameter, _T(" CENTRE="))) == NULL)
return false;
ParseCoordsTNP(parameter, temp_area.Center);
GeoPoint to;
if ((parameter = _tcsstr(parameter, _T(" "))) == NULL)
return false;
parameter++;
if ((parameter = _tcsstr(parameter, _T(" "))) == NULL)
return false;
if ((parameter = string_after_prefix_ci(parameter, _T(" TO="))) == NULL)
return false;
ParseCoordsTNP(parameter, to);
Angle bearing_from;
Angle bearing_to;
fixed radius;
static const fixed fixed_75 = fixed(7.5);
const Angle BearingStep = Angle::degrees(temp_area.Rotation * fixed(5));
DistanceBearing(temp_area.Center, from, &radius, &bearing_from);
bearing_to = Bearing(temp_area.Center, to);
GeoPoint TempPoint;
while ((bearing_to - bearing_from).magnitude_degrees() > fixed_75) {
bearing_from += BearingStep;
bearing_from = bearing_from.as_bearing();
FindLatitudeLongitude(temp_area.Center, bearing_from, radius, &TempPoint);
temp_area.points.push_back(TempPoint);
}
return true;
}
static bool
ParseCircleTNP(const TCHAR *Text, TempAirspaceType &temp_area)
{
// CIRCLE RADIUS=17.00 CENTRE=N533813 E0095943
const TCHAR* parameter;
if ((parameter = string_after_prefix_ci(Text, _T("RADIUS="))) == NULL)
return false;
temp_area.Radius = Units::ToSysUnit(fixed(_tcstod(parameter, NULL)),
unNauticalMiles);
if ((parameter = _tcsstr(parameter, _T(" "))) == NULL)
return false;
if ((parameter = string_after_prefix_ci(parameter, _T(" CENTRE="))) == NULL)
return false;
ParseCoordsTNP(parameter, temp_area.Center);
return true;
}
static bool
ParseLineTNP(Airspaces &airspace_database, const TCHAR *line,
TempAirspaceType &temp_area, bool &ignore)
{
const TCHAR* parameter;
if ((parameter = string_after_prefix_ci(line, _T("INCLUDE="))) != NULL) {
if (_tcsicmp(parameter, _T("YES")) == 0)
ignore = false;
else if (_tcsicmp(parameter, _T("NO")) == 0)
ignore = true;
return true;
}
if (ignore)
return true;
if ((parameter = string_after_prefix_ci(line, _T("TITLE="))) != NULL) {
temp_area.Name = parameter;
} else if ((parameter = string_after_prefix_ci(line, _T("RADIO="))) != NULL) {
temp_area.Radio = parameter;
} else if ((parameter = string_after_prefix_ci(line, _T("ACTIVE="))) != NULL) {
if (_tcsicmp(parameter, _T("WEEKEND")) == 0)
temp_area.days_of_operation.set_weekend();
else if (_tcsicmp(parameter, _T("WEEKDAY")) == 0)
temp_area.days_of_operation.set_weekdays();
else if (_tcsicmp(parameter, _T("EVERYDAY")) == 0)
temp_area.days_of_operation.set_all();
} else if ((parameter = string_after_prefix_ci(line, _T("TYPE="))) != NULL) {
if (!temp_area.Waiting)
temp_area.AddPolygon(airspace_database);
temp_area.reset();
temp_area.Type = ParseTypeTNP(parameter);
temp_area.Waiting = false;
} else if ((parameter = string_after_prefix_ci(line, _T("CLASS="))) != NULL) {
if (temp_area.Type == OTHER)
temp_area.Type = ParseClassTNP(parameter);
} else if ((parameter = string_after_prefix_ci(line, _T("TOPS="))) != NULL) {
ReadAltitude(parameter, &temp_area.Top);
} else if ((parameter = string_after_prefix_ci(line, _T("BASE="))) != NULL) {
ReadAltitude(parameter, &temp_area.Base);
} else if ((parameter = string_after_prefix_ci(line, _T("POINT="))) != NULL) {
GeoPoint TempPoint;
if (!ParseCoordsTNP(parameter, TempPoint))
return false;
temp_area.points.push_back(TempPoint);
} else if ((parameter =
string_after_prefix_ci(line, _T("CIRCLE "))) != NULL) {
if (!ParseCircleTNP(parameter, temp_area))
return false;
temp_area.AddCircle(airspace_database);
} else if ((parameter =
string_after_prefix_ci(line, _T("CLOCKWISE "))) != NULL) {
temp_area.Rotation = 1;
if (!ParseArcTNP(parameter, temp_area))
return false;
} else if ((parameter =
string_after_prefix_ci(line, _T("ANTI-CLOCKWISE "))) != NULL) {
temp_area.Rotation = -1;
if (!ParseArcTNP(parameter, temp_area))
return false;
}
return true;
}
static bool
ParseLine(Airspaces &airspace_database, const TCHAR *line,
TempAirspaceType &temp_area)
{
const TCHAR *value;
// Only return expected lines
switch (line[0]) {
case _T('A'):
case _T('a'):
switch (line[1]) {
case _T('C'):
case _T('c'):
value = value_after_space(line + 2);
if (value == NULL)
break;
if (!temp_area.Waiting)
temp_area.AddPolygon(airspace_database);
temp_area.reset();
temp_area.Type = ParseType(value);
temp_area.Waiting = false;
break;
case _T('N'):
case _T('n'):
value = value_after_space(line + 2);
if (value != NULL)
temp_area.Name = value;
break;
case _T('R'):
case _T('r'):
value = value_after_space(line + 2);
if (value != NULL)
temp_area.Radio = value;
break;
case _T('L'):
case _T('l'):
value = value_after_space(line + 2);
if (value != NULL)
ReadAltitude(value, &temp_area.Base);
break;
case _T('H'):
case _T('h'):
value = value_after_space(line + 2);
if (value != NULL)
ReadAltitude(value, &temp_area.Top);
break;
default:
return true;
}
break;
case _T('D'):
case _T('d'):
switch (line[1]) {
case _T('A'):
case _T('a'):
CalculateSector(line, temp_area);
break;
case _T('B'):
case _T('b'):
CalculateArc(line, temp_area);
break;
case _T('C'):
case _T('c'):
temp_area.Radius = Units::ToSysUnit(fixed(_tcstod(&line[2], NULL)),
unNauticalMiles);
temp_area.AddCircle(airspace_database);
temp_area.reset();
break;
case _T('P'):
case _T('p'):
value = value_after_space(line + 2);
if (value == NULL)
break;
{
GeoPoint TempPoint;
if (!ReadCoords(value, TempPoint))
return false;
temp_area.points.push_back(TempPoint);
break;
}
default:
return true;
}
break;
case _T('V'):
case _T('v'):
// Need to set these while in count mode, or DB/DA will crash
if (string_after_prefix_ci(&line[2], _T("X="))) {
if (!ReadCoords(&line[4],temp_area.Center))
return false;
} else if (string_after_prefix_ci(&line[2], _T("D=-"))) {
temp_area.Rotation = -1;
} else if (string_after_prefix_ci(&line[2], _T("D=+"))) {
temp_area.Rotation = +1;
}
break;
}
return true;
}