System.TimeZoneInfo.ParseRegTzi C# (CSharp) Method

		private static void ParseRegTzi (List<AdjustmentRule> adjustmentRules, int start_year, int end_year, byte [] buffer)
		{
			//int standard_bias = BitConverter.ToInt32 (buffer, 4); /* not sure how to handle this */
			int daylight_bias = BitConverter.ToInt32 (buffer, 8);

			int standard_year = BitConverter.ToInt16 (buffer, 12);
			int standard_month = BitConverter.ToInt16 (buffer, 14);
			int standard_dayofweek = BitConverter.ToInt16 (buffer, 16);
			int standard_day = BitConverter.ToInt16 (buffer, 18);
			int standard_hour = BitConverter.ToInt16 (buffer, 20);
			int standard_minute = BitConverter.ToInt16 (buffer, 22);
			int standard_second = BitConverter.ToInt16 (buffer, 24);
			int standard_millisecond = BitConverter.ToInt16 (buffer, 26);

			int daylight_year = BitConverter.ToInt16 (buffer, 28);
			int daylight_month = BitConverter.ToInt16 (buffer, 30);
			int daylight_dayofweek = BitConverter.ToInt16 (buffer, 32);
			int daylight_day = BitConverter.ToInt16 (buffer, 34);
			int daylight_hour = BitConverter.ToInt16 (buffer, 36);
			int daylight_minute = BitConverter.ToInt16 (buffer, 38);
			int daylight_second = BitConverter.ToInt16 (buffer, 40);
			int daylight_millisecond = BitConverter.ToInt16 (buffer, 42);

			if (standard_month == 0 || daylight_month == 0)
				return;

			DateTime start_date;
			DateTime start_timeofday = new DateTime (1, 1, 1, daylight_hour, daylight_minute, daylight_second, daylight_millisecond);
			TransitionTime start_transition_time;

			if (daylight_year == 0) {
				start_date = new DateTime (start_year, 1, 1);
				start_transition_time = TransitionTime.CreateFloatingDateRule (
					start_timeofday, daylight_month, daylight_day,
					(DayOfWeek) daylight_dayofweek);
			}
			else {
				start_date = new DateTime (daylight_year, daylight_month, daylight_day,
					daylight_hour, daylight_minute, daylight_second, daylight_millisecond);
				start_transition_time = TransitionTime.CreateFixedDateRule (
					start_timeofday, daylight_month, daylight_day);
			}

			DateTime end_date;
			DateTime end_timeofday = new DateTime (1, 1, 1, standard_hour, standard_minute, standard_second, standard_millisecond);
			TransitionTime end_transition_time;

			if (standard_year == 0) {
				end_date = new DateTime (end_year, 12, 31);
				end_transition_time = TransitionTime.CreateFloatingDateRule (
					end_timeofday, standard_month, standard_day,
					(DayOfWeek) standard_dayofweek);
			}
			else {
				end_date = new DateTime (standard_year, standard_month, standard_day,
					standard_hour, standard_minute, standard_second, standard_millisecond);
				end_transition_time = TransitionTime.CreateFixedDateRule (
					end_timeofday, standard_month, standard_day);
			}

			TimeSpan daylight_delta = new TimeSpan(0, -daylight_bias, 0);

			adjustmentRules.Add (AdjustmentRule.CreateAdjustmentRule (
				start_date, end_date, daylight_delta,
				start_transition_time, end_transition_time));
		}
#endif