internal ExTimeZone Promote()
{
ExTimeZone result = null;
TimeZoneRule timeZoneRule = null;
TimeZoneRule timeZoneRule2 = null;
SortedSet <ushort> sortedSet = new SortedSet <ushort>();
VTimeZone.CollectAllRuleYears(this.standardRules, sortedSet);
VTimeZone.CollectAllRuleYears(this.daylightRules, sortedSet);
List <RegistryTimeZoneRule> list = new List <RegistryTimeZoneRule>(sortedSet.Count);
foreach (ushort num in sortedSet)
{
TimeZoneRule timeZoneRule3 = VTimeZone.UpdateAndGetCurrentRule(num, this.daylightRules, ref timeZoneRule2);
TimeZoneRule timeZoneRule4 = VTimeZone.UpdateAndGetCurrentRule(num, this.standardRules, ref timeZoneRule);
if (timeZoneRule3 != null || timeZoneRule4 != null)
{
list.Add(new RegistryTimeZoneRule((int)num, this.GetNativeTimeZoneRule(timeZoneRule4, timeZoneRule3)));
}
}
try
{
result = TimeZoneHelper.CreateCustomExTimeZoneFromRegRules(list[0].RegTimeZoneInfo, this.timeZoneId, this.timeZoneId, list);
}
catch (InvalidTimeZoneException ex)
{
ExTraceGlobals.ICalTracer.TraceDebug <string>((long)this.GetHashCode(), "ToExTimeZone::ToExTimeZone. Following error found when construct customized time zone: {0}", ex.Message);
base.Context.AddError(ServerStrings.InvalidICalElement("VTIMEZONE"));
}
return(result);
}
private REG_TIMEZONE_INFO GetNativeTimeZoneRule(TimeZoneRule standard, TimeZoneRule daylight)
{
if (standard != null && daylight != null && standard.Offset == daylight.Offset)
{
daylight = null;
}
REG_TIMEZONE_INFO result = default(REG_TIMEZONE_INFO);
if (standard == null)
{
result.Bias = -daylight.Offset;
result.DaylightBias = 0;
}
else
{
result.Bias = -standard.Offset;
result.StandardBias = 0;
if (daylight != null)
{
result.StandardDate = standard.TransitionDate;
result.DaylightDate = daylight.TransitionDate;
result.DaylightBias = standard.Offset - daylight.Offset;
}
}
return(result);
}
protected override bool ProcessSubComponent(CalendarComponentBase calendarComponent)
{
bool result = true;
TimeZoneRule timeZoneRule = calendarComponent as TimeZoneRule;
if (timeZoneRule != null)
{
ushort year = timeZoneRule.Year;
ComponentId componentId = calendarComponent.ComponentId;
if (componentId != ComponentId.Standard)
{
if (componentId == ComponentId.Daylight)
{
if (this.daylightRules.ContainsKey(year))
{
ExTraceGlobals.ICalTracer.TraceError <ushort>(0L, "VTimeZone::ProcessSubComponent:ComponentId.Daylight. Ignoring the repeated year timezone definition. Year: {0}", year);
}
else
{
this.daylightRules.Add(year, timeZoneRule);
}
}
}
else if (this.standardRules.ContainsKey(year))
{
ExTraceGlobals.ICalTracer.TraceError <ushort>(0L, "VTimeZone::ProcessSubComponent:ComponentId.Standard. Ignoring the repeated year timezone definition. Year: {0}", year);
}
else
{
this.standardRules.Add(year, timeZoneRule);
}
}
return(result);
}
private static TimeZoneRule ValidateRecentRule(TimeZoneRule recentRule, ushort currentYear)
{
if (recentRule == null)
{
return(null);
}
if (!recentRule.RuleHasRecurrenceUntilField || recentRule.RecurrenceRule.UntilDateTime.Year >= (int)currentYear)
{
return(recentRule);
}
return(null);
}
private static void CollectAllRuleYears(Dictionary <ushort, TimeZoneRule> rules, SortedSet <ushort> allRuleYears)
{
foreach (ushort num in rules.Keys)
{
allRuleYears.Add(num);
TimeZoneRule timeZoneRule = rules[num];
if (timeZoneRule.RuleHasRecurrenceUntilField && timeZoneRule.RecurrenceRule.UntilDateTime.Year < DateTime.MaxValue.Year)
{
allRuleYears.Add((ushort)(timeZoneRule.RecurrenceRule.UntilDateTime.Year + 1));
}
}
}
private static TimeZoneRule UpdateAndGetCurrentRule(ushort currentYear, Dictionary <ushort, TimeZoneRule> rules, ref TimeZoneRule recentRule)
{
TimeZoneRule timeZoneRule;
if (!rules.TryGetValue(currentYear, out timeZoneRule))
{
timeZoneRule = VTimeZone.ValidateRecentRule(recentRule, currentYear);
}
recentRule = timeZoneRule;
return(timeZoneRule);
}