public static void FixTimeZoneDSTRRules(TimeZoneInfo tz, DDay.iCal.iCalTimeZone iCalTz)
{
var adjustments = tz.GetAdjustmentRules();
foreach (var tziItems in iCalTz.TimeZoneInfos)
{
var matchingAdj = adjustments.FirstOrDefault(a => (a.DateStart.Year == tziItems.Start.Year)) ?? adjustments.FirstOrDefault();
if (matchingAdj != null)
{
if ((matchingAdj.DateEnd.Year != 9999) && !(tziItems.Name.Equals("STANDARD") && matchingAdj == adjustments.Last()))
{
tziItems.RecurrenceRules[0].Until =
DateTime.SpecifyKind(matchingAdj.DateEnd.Date.AddDays(1).Subtract(tz.BaseUtcOffset), DateTimeKind.Utc);
}
if (tziItems.Name.Equals("STANDARD"))
{
if (!matchingAdj.DaylightTransitionEnd.IsFixedDateRule)
{
var startYear = tziItems.Start.Year;
tziItems.Start = CalcTransitionStart(matchingAdj.DaylightTransitionEnd, startYear);
}
}
else
{
if (!matchingAdj.DaylightTransitionStart.IsFixedDateRule)
{
var startYear = tziItems.Start.Year;
tziItems.Start = CalcTransitionStart(matchingAdj.DaylightTransitionStart, startYear);
}
}
}
}
}
/// <summary>
/// Retrieves the <see cref="DDay.iCal.Components.TimeZone" /> object for the specified
/// <see cref="TZID"/> (Time Zone Identifier).
/// </summary>
/// <param name="tzid">A valid <see cref="TZID"/> object, or a valid <see cref="TZID"/> string.</param>
/// <returns>A <see cref="TimeZone"/> object for the <see cref="TZID"/>.</returns>
public iCalTimeZone GetTimeZone(TZID tzid)
{
foreach (iCalendar iCal in this)
{
iCalTimeZone tz = iCal.GetTimeZone(tzid);
if (tz != null)
{
return(tz);
}
}
return(null);
}
public static iCalTimeZone FromSystemTimeZone(System.TimeZoneInfo tzinfo)
{
var adjustmentRules = tzinfo.GetAdjustmentRules();
var utcOffset = tzinfo.BaseUtcOffset;
var dday_tz = new iCalTimeZone();
foreach (var adjustmentRule in adjustmentRules)
{
var delta = adjustmentRule.DaylightDelta;
dday_tz.TZID = tzinfo.Id;
var dday_tzinfo_standard = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.Start = new iCalDateTime(adjustmentRule.DateStart);
if (dday_tzinfo_standard.Start.Year < 1800)
{
dday_tzinfo_standard.Start = dday_tzinfo_standard.Start.AddYears(1800 - dday_tzinfo_standard.Start.Year);
}
dday_tzinfo_standard.OffsetFrom = new UTCOffset(utcOffset + delta);
dday_tzinfo_standard.OffsetTo = new UTCOffset(utcOffset);
PopulateiCalTimeZoneInfo(dday_tzinfo_standard, adjustmentRule.DaylightTransitionEnd, adjustmentRule.DateStart.Year);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
var dday_tzinfo_daylight = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_daylight.Name = "DAYLIGHT";
dday_tzinfo_daylight.Start = new iCalDateTime(adjustmentRule.DateStart);
if (dday_tzinfo_daylight.Start.Year < 1800)
{
dday_tzinfo_daylight.Start = dday_tzinfo_daylight.Start.AddYears(1800 - dday_tzinfo_daylight.Start.Year);
}
dday_tzinfo_daylight.OffsetFrom = new UTCOffset(utcOffset);
dday_tzinfo_daylight.OffsetTo = new UTCOffset(utcOffset + delta);
PopulateiCalTimeZoneInfo(dday_tzinfo_daylight, adjustmentRule.DaylightTransitionStart, adjustmentRule.DateStart.Year);
// Add the "daylight" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_daylight);
}
return(dday_tz);
}
public static iCalTimeZone FromSystemTimeZone(System.TimeZoneInfo tzinfo)
{
var adjustmentRules = tzinfo.GetAdjustmentRules();
var utcOffset = tzinfo.BaseUtcOffset;
var dday_tz = new iCalTimeZone();
foreach (var adjustmentRule in adjustmentRules)
{
var delta = adjustmentRule.DaylightDelta;
dday_tz.TZID = tzinfo.Id;
var dday_tzinfo_standard = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.Start = new iCalDateTime(adjustmentRule.DateStart);
if (dday_tzinfo_standard.Start.Year < 1800)
dday_tzinfo_standard.Start = dday_tzinfo_standard.Start.AddYears(1800 - dday_tzinfo_standard.Start.Year);
dday_tzinfo_standard.OffsetFrom = new UTCOffset(utcOffset + delta);
dday_tzinfo_standard.OffsetTo = new UTCOffset(utcOffset);
PopulateiCalTimeZoneInfo(dday_tzinfo_standard, adjustmentRule.DaylightTransitionEnd, adjustmentRule.DateStart.Year);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
var dday_tzinfo_daylight = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_daylight.Name = "DAYLIGHT";
dday_tzinfo_daylight.Start = new iCalDateTime(adjustmentRule.DateStart);
if (dday_tzinfo_daylight.Start.Year < 1800)
dday_tzinfo_daylight.Start = dday_tzinfo_daylight.Start.AddYears(1800 - dday_tzinfo_daylight.Start.Year);
dday_tzinfo_daylight.OffsetFrom = new UTCOffset(utcOffset);
dday_tzinfo_daylight.OffsetTo = new UTCOffset(utcOffset + delta);
PopulateiCalTimeZoneInfo(dday_tzinfo_daylight, adjustmentRule.DaylightTransitionStart, adjustmentRule.DateStart.Year);
// Add the "daylight" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_daylight);
}
return dday_tz;
}
public static iCalTimeZone FromSystemTimeZone(System.TimeZoneInfo tzinfo, DateTime earlistDateTimeToSupport, bool includeHistoricalData)
{
var adjustmentRules = tzinfo.GetAdjustmentRules();
var utcOffset = tzinfo.BaseUtcOffset;
var dday_tz = new iCalTimeZone();
dday_tz.TZID = tzinfo.Id;
IDateTime earliest = new iCalDateTime(earlistDateTimeToSupport);
foreach (var adjustmentRule in adjustmentRules)
{
// Only include historical data if asked to do so. Otherwise,
// use only the most recent adjustment rule available.
if (!includeHistoricalData && adjustmentRule.DateEnd < earlistDateTimeToSupport)
{
continue;
}
var delta = adjustmentRule.DaylightDelta;
var dday_tzinfo_standard = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.TimeZoneName = tzinfo.StandardName;
dday_tzinfo_standard.Start = new iCalDateTime(new DateTime(adjustmentRule.DateStart.Year, adjustmentRule.DaylightTransitionEnd.Month, adjustmentRule.DaylightTransitionEnd.Day, adjustmentRule.DaylightTransitionEnd.TimeOfDay.Hour, adjustmentRule.DaylightTransitionEnd.TimeOfDay.Minute, adjustmentRule.DaylightTransitionEnd.TimeOfDay.Second).AddDays(1));
if (dday_tzinfo_standard.Start.LessThan(earliest))
{
dday_tzinfo_standard.Start = dday_tzinfo_standard.Start.AddYears(earliest.Year - dday_tzinfo_standard.Start.Year);
}
dday_tzinfo_standard.OffsetFrom = new UTCOffset(utcOffset + delta);
dday_tzinfo_standard.OffsetTo = new UTCOffset(utcOffset);
PopulateiCalTimeZoneInfo(dday_tzinfo_standard, adjustmentRule.DaylightTransitionEnd, adjustmentRule.DateStart.Year);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
if (tzinfo.SupportsDaylightSavingTime)
{
var dday_tzinfo_daylight = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_daylight.Name = "DAYLIGHT";
dday_tzinfo_daylight.TimeZoneName = tzinfo.DaylightName;
dday_tzinfo_daylight.Start = new iCalDateTime(new DateTime(adjustmentRule.DateStart.Year, adjustmentRule.DaylightTransitionStart.Month, adjustmentRule.DaylightTransitionStart.Day, adjustmentRule.DaylightTransitionStart.TimeOfDay.Hour, adjustmentRule.DaylightTransitionStart.TimeOfDay.Minute, adjustmentRule.DaylightTransitionStart.TimeOfDay.Second));
if (dday_tzinfo_daylight.Start.LessThan(earliest))
{
dday_tzinfo_daylight.Start = dday_tzinfo_daylight.Start.AddYears(earliest.Year - dday_tzinfo_daylight.Start.Year);
}
dday_tzinfo_daylight.OffsetFrom = new UTCOffset(utcOffset);
dday_tzinfo_daylight.OffsetTo = new UTCOffset(utcOffset + delta);
PopulateiCalTimeZoneInfo(dday_tzinfo_daylight, adjustmentRule.DaylightTransitionStart, adjustmentRule.DateStart.Year);
// Add the "daylight" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_daylight);
}
}
// If no time zone information was recorded, at least
// add a STANDARD time zone element to indicate the
// base time zone information.
if (dday_tz.TimeZoneInfos.Count == 0)
{
var dday_tzinfo_standard = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.TimeZoneName = tzinfo.StandardName;
dday_tzinfo_standard.Start = earliest;
dday_tzinfo_standard.OffsetFrom = new UTCOffset(utcOffset);
dday_tzinfo_standard.OffsetTo = new UTCOffset(utcOffset);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
}
return(dday_tz);
}
public static iCalTimeZone FromSystemTimeZone(System.TimeZoneInfo tzinfo, DateTime earlistDateTimeToSupport, bool includeHistoricalData)
{
var adjustmentRules = tzinfo.GetAdjustmentRules();
var utcOffset = tzinfo.BaseUtcOffset;
var dday_tz = new iCalTimeZone();
dday_tz.TZID = tzinfo.Id;
IDateTime earliest = new iCalDateTime(earlistDateTimeToSupport);
foreach (var adjustmentRule in adjustmentRules)
{
// Only include historical data if asked to do so. Otherwise,
// use only the most recent adjustment rule available.
if (!includeHistoricalData && adjustmentRule.DateEnd < earlistDateTimeToSupport)
continue;
var delta = adjustmentRule.DaylightDelta;
var dday_tzinfo_standard = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.TimeZoneName = tzinfo.StandardName;
dday_tzinfo_standard.Start = new iCalDateTime(new DateTime(adjustmentRule.DateStart.Year, adjustmentRule.DaylightTransitionEnd.Month, adjustmentRule.DaylightTransitionEnd.Day, adjustmentRule.DaylightTransitionEnd.TimeOfDay.Hour, adjustmentRule.DaylightTransitionEnd.TimeOfDay.Minute, adjustmentRule.DaylightTransitionEnd.TimeOfDay.Second).AddDays(1));
if (dday_tzinfo_standard.Start.LessThan(earliest))
dday_tzinfo_standard.Start = dday_tzinfo_standard.Start.AddYears(earliest.Year - dday_tzinfo_standard.Start.Year);
dday_tzinfo_standard.OffsetFrom = new UTCOffset(utcOffset + delta);
dday_tzinfo_standard.OffsetTo = new UTCOffset(utcOffset);
PopulateiCalTimeZoneInfo(dday_tzinfo_standard, adjustmentRule.DaylightTransitionEnd, adjustmentRule.DateStart.Year);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
if (tzinfo.SupportsDaylightSavingTime)
{
var dday_tzinfo_daylight = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_daylight.Name = "DAYLIGHT";
dday_tzinfo_daylight.TimeZoneName = tzinfo.DaylightName;
dday_tzinfo_daylight.Start = new iCalDateTime(new DateTime(adjustmentRule.DateStart.Year, adjustmentRule.DaylightTransitionStart.Month, adjustmentRule.DaylightTransitionStart.Day, adjustmentRule.DaylightTransitionStart.TimeOfDay.Hour, adjustmentRule.DaylightTransitionStart.TimeOfDay.Minute, adjustmentRule.DaylightTransitionStart.TimeOfDay.Second));
if (dday_tzinfo_daylight.Start.LessThan(earliest))
dday_tzinfo_daylight.Start = dday_tzinfo_daylight.Start.AddYears(earliest.Year - dday_tzinfo_daylight.Start.Year);
dday_tzinfo_daylight.OffsetFrom = new UTCOffset(utcOffset);
dday_tzinfo_daylight.OffsetTo = new UTCOffset(utcOffset + delta);
PopulateiCalTimeZoneInfo(dday_tzinfo_daylight, adjustmentRule.DaylightTransitionStart, adjustmentRule.DateStart.Year);
// Add the "daylight" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_daylight);
}
}
// If no time zone information was recorded, at least
// add a STANDARD time zone element to indicate the
// base time zone information.
if (dday_tz.TimeZoneInfos.Count == 0)
{
var dday_tzinfo_standard = new DDay.iCal.iCalTimeZoneInfo();
dday_tzinfo_standard.Name = "STANDARD";
dday_tzinfo_standard.TimeZoneName = tzinfo.StandardName;
dday_tzinfo_standard.Start = earliest;
dday_tzinfo_standard.OffsetFrom = new UTCOffset(utcOffset);
dday_tzinfo_standard.OffsetTo = new UTCOffset(utcOffset);
// Add the "standard" time rule to the time zone
dday_tz.AddChild(dday_tzinfo_standard);
}
return dday_tz;
}