public DateTimeArgs Union(DateTimeArgs a)
{
Year = a.Year < 0 ? Year : a.Year;
Month = a.Month < 0 ? Month : a.Month;
Day = a.Day < 0 ? Day : a.Day;
Hour = a.Hour < 0 ? Hour : a.Hour;
Minute = a.Minute < 0 ? Minute : a.Minute;
Second = a.Second < 0 ? Second : a.Second;
FracSecond = a.FracSecond < 0 ? FracSecond : a.FracSecond;
AMPM = a.AMPM == AMPMSpec.Unspecified ? AMPM : a.AMPM;
TimeZone = a.TimeZone == TimeZoneSpec.Unspecified ? TimeZone : a.TimeZone;
ZoneHour = a.ZoneHour < 0 ? ZoneHour : a.ZoneHour;
ZoneMinute = a.ZoneMinute < 0 ? ZoneMinute : a.ZoneMinute;
return(new DateTimeArgs(Year, Month, Day, Hour, Minute, Second, FracSecond, AMPM, TimeZone, ZoneHour, ZoneMinute));
}
public static DateTimeArgs Union(DateTimeArgs a, DateTimeArgs b)
{
return(new DateTimeArgs()
{
Year = a.Year < 0 ? b.Year : a.Year,
Month = a.Month < 0 ? b.Month : a.Month,
Day = a.Day < 0 ? b.Day : a.Day,
Hour = a.Hour < 0 ? b.Hour : a.Hour,
Minute = a.Minute < 0 ? b.Minute : a.Minute,
Second = a.Second < 0 ? b.Second : a.Second,
FracSecond = a.FracSecond < 0 ? b.FracSecond : a.FracSecond,
AMPM = a.AMPM == AMPMSpec.Unspecified ? b.AMPM : a.AMPM,
TimeZone = a.TimeZone == TimeZoneSpec.Unspecified ? b.TimeZone : a.TimeZone,
ZoneHour = a.ZoneHour < 0 ? b.ZoneHour : a.ZoneHour,
ZoneMinute = a.ZoneMinute < 0 ? b.ZoneMinute : a.ZoneMinute
});
}
public static DateTime CreateDateTime(DateTimeArgs args)
{
Validate(args);
DateTimeKind dtk = args.TimeZone == TimeZoneSpec.Unspecified ? DateTimeKind.Unspecified : DateTimeKind.Utc;
DateTime dt = new DateTime(args.Year, args.Month, args.Day, args.Hour, args.Minute, args.Second, dtk);
if (args.FracSecond > 0)
{
dt = new DateTime(dt.Ticks + args.FracSecond, dtk);
}
if (args.TimeZone == TimeZoneSpec.Ahead || args.TimeZone == TimeZoneSpec.Behind)
{
TimeSpan ts = new TimeSpan(args.ZoneHour, args.ZoneMinute, 0);
dt += args.TimeZone == TimeZoneSpec.Ahead ? ts : -ts;
}
return(dt);
}
public static DateTimeArgs Normalize(DateTimeArgs a)
{
DateTime t = DateTime.Now;
return(new DateTimeArgs()
{
Year = a.Year < 0 ? t.Year : a.Year,
Month = a.Month < 0 ? t.Month : a.Month,
Day = a.Day < 0 ? a.Month > 0 ? 1 : t.Day : a.Day,
Hour = a.Hour < 0 ? 0 : a.Hour + (a.AMPM == AMPMSpec.PM ? 12 : 0),
Minute = a.Minute < 0 ? 0 : a.Minute,
Second = a.Second < 0 ? 0 : a.Second,
FracSecond = a.FracSecond < 0 ? 0 : a.FracSecond,
AMPM = AMPMSpec.Unspecified,
TimeZone = a.TimeZone,
ZoneHour = (a.ZoneHour < 0 || a.TimeZone == TimeZoneSpec.Unspecified || a.TimeZone == TimeZoneSpec.Zulu) ? 0 : a.ZoneHour,
ZoneMinute = (a.ZoneMinute < 0 || a.TimeZone == TimeZoneSpec.Unspecified || a.TimeZone == TimeZoneSpec.Zulu) ? 0 : a.ZoneMinute
});
}
public static void Validate(DateTimeArgs args)
{
if (args.Year < 100)
{
throw new ArgumentException("Invalid year");
}
if (args.Month < 1 || args.Month > 12)
{
throw new ArgumentException("Invalid month");
}
if (args.Day < 1 || args.Day > 31)
{
throw new ArgumentException("Invalid day");
}
if (args.Hour < 0 || args.Hour > 23)
{
throw new ArgumentException("Invalid hour");
}
if (args.Minute < 0 || args.Minute > 59)
{
throw new ArgumentException("Invalid minute");
}
if (args.Second < 0 || args.Second > 59)
{
throw new ArgumentException("Invalid second");
}
if (args.Minute < 0 || args.FracSecond > 999)
{
throw new ArgumentException("Invalid fractional seconds");
}
if (args.AMPM != AMPMSpec.Unspecified)
{
throw new ArgumentException("Unnormalized date/time args");
}
if (args.ZoneHour < 0 || (args.ZoneHour > 0 && (args.TimeZone == TimeZoneSpec.Zulu || args.TimeZone == TimeZoneSpec.Unspecified)))
{
throw new ArgumentException("Invalid time zone hour");
}
if (args.ZoneMinute < 0 || (args.ZoneMinute > 0 && (args.TimeZone == TimeZoneSpec.Zulu || args.TimeZone == TimeZoneSpec.Unspecified)))
{
throw new ArgumentException("Invalid time zone minute");
}
}