public override bool Equals(object obj)
{
VTimeZoneInfo tzi = obj as VTimeZoneInfo;
if (tzi != null)
{
return(object.Equals(TimeZoneName, tzi.TimeZoneName) &&
object.Equals(OffsetFrom, tzi.OffsetFrom) &&
object.Equals(OffsetTo, tzi.OffsetTo));
}
return(base.Equals(obj));
}
private static ITimeZoneInfo CreateTimeZoneInfo(List <ZoneInterval> matchedIntervals, List <ZoneInterval> intervals, bool isRRule = true, bool isOnlyInterval = false)
{
if (matchedIntervals == null || !matchedIntervals.Any())
{
throw new ArgumentException("No intervals found in matchedIntervals");
}
var oldestInterval = matchedIntervals.OrderBy(x => x.Start).FirstOrDefault();
if (oldestInterval == null)
{
throw new InvalidOperationException("oldestInterval was not found");
}
var previousInterval = intervals.SingleOrDefault(x => x.End == oldestInterval.Start);
var delta = new TimeSpan(1, 0, 0);
if (previousInterval != null)
{
delta = (previousInterval.WallOffset - oldestInterval.WallOffset).ToTimeSpan();
}
else if (isOnlyInterval)
{
delta = new TimeSpan();
}
var utcOffset = oldestInterval.StandardOffset.ToTimeSpan();
var timeZoneInfo = new VTimeZoneInfo();
var isDaylight = oldestInterval.Savings.Ticks > 0;
if (isDaylight)
{
timeZoneInfo.Name = "DAYLIGHT";
timeZoneInfo.OffsetFrom = new UtcOffset(utcOffset);
timeZoneInfo.OffsetTo = new UtcOffset(utcOffset - delta);
}
else
{
timeZoneInfo.Name = "STANDARD";
timeZoneInfo.OffsetFrom = new UtcOffset(utcOffset + delta);
timeZoneInfo.OffsetTo = new UtcOffset(utcOffset);
}
timeZoneInfo.TimeZoneName = oldestInterval.Name;
var start = oldestInterval.IsoLocalStart.ToDateTimeUnspecified() + delta;
timeZoneInfo.Start = new CalDateTime(start)
{
HasTime = true
};
if (isRRule)
{
PopulateTimeZoneInfoRecurrenceRules(timeZoneInfo, oldestInterval);
}
else
{
PopulateTimeZoneInfoRecurrenceDates(timeZoneInfo, matchedIntervals, delta);
}
return(timeZoneInfo);
}