public static string GetUnits(this SymbolicExpression sexp)
{
string units = null;
if (sexp.GetAttributeNames().Any(p => string.Equals("units", p)))
{
units = sexp.GetAttribute("units").AsCharacter().FirstOrDefault();
}
switch (units)
{
case WEEKS:
return(WEEKS);
case DAYS:
return(DAYS);
case HOURS:
return(HOURS);
case MINS:
return(MINS);
default:
return(SECS);
}
}
public static TimeZoneInfo GetWindowsTimezone(this SymbolicExpression sexp)
{
if (sexp.GetAttributeNames().Any(p => string.Equals("tzone", p)))
{
var tzone = sexp.GetAttribute("tzone").AsCharacter().ToArray().FirstOrDefault();
return(tzone.GetWindowsTimezone());
}
return(TimeZoneInfo.Local);
}
public static bool IsPosixlt(this SymbolicExpression sexp)
{
return(sexp.GetAttributeNames().Any(p => string.Equals("class", p)) &&
sexp.GetAttribute("class").AsCharacter().ToArray().Any(p => string.Equals("POSIXlt", p)));
}
public static bool IsDiffTime(this SymbolicExpression sexp)
{
return(sexp.GetAttributeNames().Any(p => string.Equals("class", p)) &&
sexp.GetAttribute("class").AsCharacter().ToArray().Any(p => string.Equals("difftime", p)));
}