private static DateTime IncrementDate(DateTime dt, RecurrenceRule rule)
{
DateTime time = dt;
if (rule.Type == RecurrenceRule.RecurrenceType.Daily)
{
return(dt.AddDays((double)rule.Frequency));
}
if (rule.Type == RecurrenceRule.RecurrenceType.Weekly)
{
int num = Enum.GetNames(typeof(DayOfWeek)).Count <string>();
time = dt.AddDays(1.0);
if ((time.DayOfWeek == rule.FirstDayOfWeek) && (rule.Frequency > 1))
{
time = time.AddDays((double)(num * (rule.Frequency - 1)));
}
return(time);
}
if ((rule.Type == RecurrenceRule.RecurrenceType.Monthly) || (rule.Type == RecurrenceRule.RecurrenceType.MonthlyByDay))
{
return(dt.AddMonths(rule.Frequency));
}
if ((rule.Type != RecurrenceRule.RecurrenceType.Yearly) && (rule.Type != RecurrenceRule.RecurrenceType.YearlyByDay))
{
return(time);
}
return(dt.AddYears(rule.Frequency));
}
private static DateTime ComputeTargetDateOfMonth(DateTime dt, RecurrenceRule rule)
{
DateTime firstDayOfMonth = new DateTime(dt.Year, dt.Month, 1);
DateTime lastDayOfMonth = firstDayOfMonth.AddMonths(1).AddDays(-1.0);
if (rule.Ordinal == RecurrenceRule.OrdinalType.None)
{
int day = rule.Day;
int num2 = lastDayOfMonth.Day;
if (num2 < day)
{
day = num2;
}
return(firstDayOfMonth.AddDays((double)(day - 1)));
}
int position = -1;
switch (rule.Ordinal)
{
case RecurrenceRule.OrdinalType.First:
position = 0;
break;
case RecurrenceRule.OrdinalType.Second:
position = 1;
break;
case RecurrenceRule.OrdinalType.Third:
position = 2;
break;
case RecurrenceRule.OrdinalType.Fourth:
position = 3;
break;
}
DateTime time3 = firstDayOfMonth;
if (rule.IsDay)
{
return(ComputeTargetDateOfMonthDay(firstDayOfMonth, lastDayOfMonth, position));
}
if (rule.IsWeekday || rule.IsWeekendDay)
{
return(ComputeTargetDateOfMonthWeekday(firstDayOfMonth, lastDayOfMonth, position, rule));
}
if ((rule.DaysOfWeek != null) && (rule.DaysOfWeek.Count > 0))
{
time3 = ComputeTargetDateOfMonthDayOfWeek(firstDayOfMonth, position, rule);
}
return(time3);
}
private static DateTime ComputeExpandBeginDaily(DateTime rangeBegin, DateTime itemBegin, RecurrenceRule rule)
{
int num = ComupteSpanDays(rangeBegin, itemBegin);
if ((num % rule.Frequency) == 0)
{
return(new DateTime(rangeBegin.Ticks));
}
int num2 = rule.Frequency - (num % rule.Frequency);
return(rangeBegin.AddDays((double)num2));
}
private static DateTime ComputeExpandBegin(DateTime rangeBegin, DateTime orgTimeItemBegin, RecurrenceRule rule)
{
DateTime itemBegin = new DateTime(orgTimeItemBegin.Ticks);
if (rangeBegin <= itemBegin)
{
return(new DateTime(itemBegin.Ticks));
}
DateTime time2 = new DateTime();
switch (rule.Type)
{
case RecurrenceRule.RecurrenceType.Daily:
return(ComputeExpandBeginDaily(rangeBegin, itemBegin, rule));
case RecurrenceRule.RecurrenceType.Weekly:
return(ComputeExpandBeginWeekly(rangeBegin, itemBegin, rule));
case RecurrenceRule.RecurrenceType.Monthly:
case RecurrenceRule.RecurrenceType.MonthlyByDay:
return(ComputeExtractBeginMonthly(rangeBegin, itemBegin, rule));
case RecurrenceRule.RecurrenceType.Yearly:
case RecurrenceRule.RecurrenceType.YearlyByDay:
return(ComputeExtractBeginYearly(rangeBegin, itemBegin, rule));
}
return(time2);
}
private static IList <SPItem> ExpandSeriesItem(SPItem masterItem, string beginFieldName, string endFieldName, DateTime localTimeRangeBegin, DateTime localTimeRangeEnd, SPTimeZone localTZ)
{
DateTime time;
DateTime time2;
RecurrenceRule rule = new RecurrenceRule(SafeFieldAccessor.GetStringFieldValue(masterItem, "RecurrenceData"));
bool boolFieldValue = SafeFieldAccessor.GetBoolFieldValue(masterItem, "fAllDayEvent");
SPTimeZone timeZone = GetTimeZone(masterItem, localTZ);
DateTime dateTimeFieldValue = SafeFieldAccessor.GetDateTimeFieldValue(masterItem, beginFieldName);
DateTime rangeEnd = SafeFieldAccessor.GetDateTimeFieldValue(masterItem, endFieldName);
RecurrenceTimeZoneConverter converter = new RecurrenceTimeZoneConverter(timeZone, localTZ, dateTimeFieldValue, rangeEnd);
if (boolFieldValue)
{
time = dateTimeFieldValue;
time2 = rangeEnd;
}
else
{
time = converter.ToOriginal(dateTimeFieldValue);
time2 = converter.ToOriginal(rangeEnd);
}
TimeSpan itemLength = CalculateItemLength(time, time2);
DateTime rangeBegin = converter.ToOriginal(localTimeRangeBegin);
DateTime time6 = converter.ToOriginal(localTimeRangeEnd);
if (boolFieldValue)
{
rangeBegin = localTimeRangeBegin;
time6 = localTimeRangeEnd;
}
DateTime time7 = new DateTime(dateTimeFieldValue.Ticks) + itemLength;
if (time7.Day != dateTimeFieldValue.Day)
{
rangeBegin = rangeBegin.AddDays(-1.0);
}
rangeBegin = ComputeExpandBegin(rangeBegin, time, rule);
time6 = ComputeExpandEnd(time6, time, time2, rule, timeZone);
List <SPItem> list = new List <SPItem>();
DateTime date = rangeBegin.Date;
while (true)
{
DateTime itemBegin = ComputeTargetBegin(date, time, rule);
DateTime time10 = ComputeTargetEnd(itemBegin, itemLength);
TimeSpan span2 = (TimeSpan)(time10 - itemBegin);
bool flag2 = span2.Ticks == 0L;
if ((time6 < itemBegin) || ((time6 == itemBegin) && !flag2))
{
return(list);
}
if (0x3e7 <= list.Count)
{
return(list);
}
if (((rule.Type == RecurrenceRule.RecurrenceType.Daily) && rule.IsWeekday) && ((itemBegin.DayOfWeek == DayOfWeek.Saturday) || (itemBegin.DayOfWeek == DayOfWeek.Sunday)))
{
date = IncrementDate(date, rule);
}
else if ((rule.Type == RecurrenceRule.RecurrenceType.Weekly) && !rule.DaysOfWeek.Contains(itemBegin.DayOfWeek))
{
date = IncrementDate(date, rule);
}
else
{
ExpandedCalendarItem item = null;
if ((rangeBegin < time10) || ((rangeBegin == time10) && (itemLength.Ticks == 0L)))
{
item = new ExpandedCalendarItem(masterItem);
if (boolFieldValue)
{
item[beginFieldName] = itemBegin;
item[endFieldName] = time10;
}
else
{
item[beginFieldName] = converter.ToLocal(itemBegin);
item[endFieldName] = converter.ToLocal(time10);
}
string str2 = GenerateRecurrenceItemId(SafeFieldAccessor.GetIntegerFieldValue(masterItem, "ID"), (DateTime)item[beginFieldName], localTZ, boolFieldValue);
item["ID"] = str2;
if (0x3e7 > list.Count)
{
list.Add(item);
}
}
date = IncrementDate(date, rule);
}
}
}
private static DateTime ComputeTargetDateOfMonthWeekday(DateTime firstDayOfMonth, DateTime lastDayOfMonth, int position, RecurrenceRule rule)
{
DateTime time;
if (position < 0)
{
time = lastDayOfMonth;
while ((!rule.IsWeekday || (time.DayOfWeek == DayOfWeek.Saturday)) || (time.DayOfWeek == DayOfWeek.Sunday))
{
if (rule.IsWeekendDay && ((time.DayOfWeek == DayOfWeek.Saturday) || (time.DayOfWeek == DayOfWeek.Sunday)))
{
return(time);
}
time = time.AddDays(-1.0);
}
return(time);
}
time = firstDayOfMonth;
Label_0057:
while ((rule.IsWeekday && ((time.DayOfWeek == DayOfWeek.Saturday) || (time.DayOfWeek == DayOfWeek.Sunday))) || ((rule.IsWeekendDay && (time.DayOfWeek != DayOfWeek.Saturday)) && (time.DayOfWeek != DayOfWeek.Sunday)))
{
time = time.AddDays(1.0);
}
if (position > 0)
{
time = time.AddDays(1.0);
position--;
goto Label_0057;
}
return(time);
}
private static DateTime ComputeTargetDateOfMonthDayOfWeek(DateTime firstDayOfMonth, int position, RecurrenceRule rule)
{
DateTime time;
int length = Enum.GetNames(typeof(DayOfWeek)).Length;
DayOfWeek week = rule.DaysOfWeek[0];
if (position < 0)
{
time = firstDayOfMonth.AddMonths(1);
int num2 = Math.Abs((int)(time.DayOfWeek - week));
if (time.DayOfWeek <= week)
{
num2 -= length;
}
else
{
num2 = -num2;
}
return(time.AddDays((double)num2));
}
time = firstDayOfMonth;
int num3 = 0;
if (week < time.DayOfWeek)
{
num3 = ((int)(week - time.DayOfWeek)) + length;
}
else if (week > time.DayOfWeek)
{
num3 = (int)(week - time.DayOfWeek);
}
num3 += length * position;
return(time.AddDays((double)num3));
}
private static DateTime ComputeTargetBegin(DateTime date, DateTime orgTimeBegin, RecurrenceRule rule)
{
DateTime time = new DateTime();
if ((rule.Type == RecurrenceRule.RecurrenceType.Daily) || (rule.Type == RecurrenceRule.RecurrenceType.Weekly))
{
return(date.AddHours((double)orgTimeBegin.Hour).AddMinutes((double)orgTimeBegin.Minute));
}
if ((rule.Type == RecurrenceRule.RecurrenceType.Monthly) || (rule.Type == RecurrenceRule.RecurrenceType.MonthlyByDay))
{
return(ComputeTargetDateOfMonth(date, rule).AddHours((double)orgTimeBegin.Hour).AddMinutes((double)orgTimeBegin.Minute));
}
if ((rule.Type != RecurrenceRule.RecurrenceType.Yearly) && (rule.Type != RecurrenceRule.RecurrenceType.YearlyByDay))
{
return(time);
}
return(ComputeTargetDateOfMonth(GetValidDate(date.Year, rule.Month, 1), rule).AddHours((double)orgTimeBegin.Hour).AddMinutes((double)orgTimeBegin.Minute));
}
private static DateTime ComputeExtractBeginYearly(DateTime rangeBegin, DateTime itemBegin, RecurrenceRule rule)
{
DateTime time;
int num = Math.Abs((int)(itemBegin.Year - rangeBegin.Year));
if ((num % rule.Frequency) == 0)
{
time = new DateTime(rangeBegin.Ticks);
}
else
{
time = rangeBegin.AddYears(rule.Frequency - (num % rule.Frequency));
}
if (rule.Type == RecurrenceRule.RecurrenceType.Yearly)
{
time = GetValidDate(time.Year, rule.Month, rule.Day).Date.AddHours((double)itemBegin.Hour).AddMinutes((double)itemBegin.Minute);
if (time < rangeBegin)
{
time = time.AddYears(rule.Frequency);
}
return(time);
}
if (rule.Type == RecurrenceRule.RecurrenceType.YearlyByDay)
{
time = ComputeTargetDateOfMonth(GetValidDate(time.Year, rule.Month, 1), rule).Date.AddHours((double)itemBegin.Hour).AddMinutes((double)itemBegin.Minute);
if (time < rangeBegin)
{
time = ComputeTargetDateOfMonth(GetValidDate(time.Year + 1, rule.Month, 1), rule);
}
}
return(time);
}
private static DateTime ComputeExtractBeginMonthly(DateTime rangeBegin, DateTime itemBegin, RecurrenceRule rule)
{
DateTime time;
int num = ComputeSpanMonths(itemBegin, rangeBegin);
if ((num % rule.Frequency) == 0)
{
time = new DateTime(rangeBegin.Ticks);
}
else
{
int months = rule.Frequency - (num % rule.Frequency);
time = rangeBegin.AddMonths(months);
}
time = ComputeTargetDateOfMonth(time, rule).Date.AddHours((double)itemBegin.Hour).AddMinutes((double)itemBegin.Minute);
if (time < rangeBegin)
{
time = ComputeTargetDateOfMonth(time.AddMonths(rule.Frequency), rule);
}
return(time);
}
private static DateTime ComputeExpandEnd(DateTime rangeEnd, DateTime orgTimeItemBegin, DateTime orgTimeItemEnd, RecurrenceRule rule, SPTimeZone orgTZ)
{
DateTime time;
DateTime time2 = new DateTime(orgTimeItemBegin.Ticks);
DateTime time3 = new DateTime(orgTimeItemEnd.Ticks);
if (rule.HasWindowEnd)
{
time3 = orgTZ.UTCToLocalTime(rule.WindowEnd).Date.AddDays(1.0);
}
if (time3 < rangeEnd)
{
time = new DateTime(time3.Ticks);
}
else
{
time = new DateTime(rangeEnd.Ticks);
}
int repeatInstances = rule.RepeatInstances;
if (((repeatInstances == 0) && !rule.HasWindowEnd) || (repeatInstances > 0x3e7))
{
repeatInstances = 0x3e7;
}
if (repeatInstances > 0)
{
int num2 = 0;
DateTime date = time2.Date;
while (date < rangeEnd)
{
DateTime time5 = ComputeTargetBegin(date, orgTimeItemBegin, rule);
if (((rule.Type == RecurrenceRule.RecurrenceType.Daily) && rule.IsWeekday) && ((time5.DayOfWeek == DayOfWeek.Saturday) || (time5.DayOfWeek == DayOfWeek.Sunday)))
{
date = IncrementDate(date, rule);
}
else if ((rule.Type == RecurrenceRule.RecurrenceType.Weekly) && !rule.DaysOfWeek.Contains(time5.DayOfWeek))
{
date = IncrementDate(date, rule);
}
else
{
if (time5 >= time2)
{
num2++;
if (num2 == repeatInstances)
{
return(time5.AddDays(1.0).Date);
}
}
date = IncrementDate(date, rule);
}
}
}
return(time);
}
private static DateTime ComputeExpandBeginWeekly(DateTime rangeBegin, DateTime itemBegin, RecurrenceRule rule)
{
while (!rule.DaysOfWeek.Contains(itemBegin.DayOfWeek))
{
itemBegin = itemBegin.AddDays(1.0);
}
if (rangeBegin <= itemBegin)
{
return(new DateTime(itemBegin.Ticks));
}
int length = Enum.GetNames(typeof(DayOfWeek)).Length;
DateTime time = new DateTime(itemBegin.Ticks);
while ((time < rangeBegin) || !rule.DaysOfWeek.Contains(time.DayOfWeek))
{
time = time.AddDays(1.0);
if ((time.DayOfWeek == rule.FirstDayOfWeek) && (rule.Frequency > 1))
{
time = time.AddDays((double)(length * (rule.Frequency - 1)));
}
}
return(time);
}
private static IList <ExpandedRosterEvent> ExpandSeriesItem(RosterEvent masterItem, string beginFieldName, string endFieldName, DateTime localTimeRangeBegin, DateTime localTimeRangeEnd, SPTimeZone localTZ)
{
DateTime time;
DateTime time2;
RecurrenceRule rule = new RecurrenceRule(masterItem.GetRecurrence());
bool isAllDayEvent = masterItem.GetIsAllDayEvent();
SPTimeZone timeZone = GetTimeZone(masterItem, localTZ);
DateTime dateTimeFieldValue = masterItem.GetStartDate();
DateTime rangeEnd = masterItem.GetEndDate();
RecurrenceTimeZoneConverter converter = new RecurrenceTimeZoneConverter(timeZone, localTZ, dateTimeFieldValue, rangeEnd);
if (isAllDayEvent)
{
time = dateTimeFieldValue;
time2 = rangeEnd;
}
else
{
time = converter.ToOriginal(dateTimeFieldValue);
time2 = converter.ToOriginal(rangeEnd);
}
TimeSpan itemLength = CalculateItemLength(time, time2);
DateTime rangeBegin = converter.ToOriginal(localTimeRangeBegin);
DateTime time6 = converter.ToOriginal(localTimeRangeEnd);
if (isAllDayEvent)
{
rangeBegin = localTimeRangeBegin;
time6 = localTimeRangeEnd;
}
DateTime time7 = new DateTime(dateTimeFieldValue.Ticks) + itemLength;
if (time7.Day != dateTimeFieldValue.Day)
{
rangeBegin = rangeBegin.AddDays(-1.0);
}
rangeBegin = ComputeExpandBegin(rangeBegin, time, rule);
time6 = ComputeExpandEnd(time6, time, time2, rule, timeZone);
List <ExpandedRosterEvent> list = new List <ExpandedRosterEvent>();
DateTime date = rangeBegin.Date;
while (true)
{
DateTime itemBegin = ComputeTargetBegin(date, time, rule);
DateTime time10 = ComputeTargetEnd(itemBegin, itemLength);
TimeSpan span2 = (TimeSpan)(time10 - itemBegin);
bool flag2 = span2.Ticks == 0L;
if ((time6 < itemBegin) || ((time6 == itemBegin) && !flag2))
{
return(list);
}
if (999 <= list.Count)
{
return(list);
}
if (((rule.Type == RecurrenceRule.RecurrenceType.Daily) && rule.IsWeekday) && ((itemBegin.DayOfWeek == DayOfWeek.Saturday) || (itemBegin.DayOfWeek == DayOfWeek.Sunday)))
{
date = IncrementDate(date, rule);
}
else if ((rule.Type == RecurrenceRule.RecurrenceType.Weekly) && !rule.DaysOfWeek.Contains(itemBegin.DayOfWeek))
{
date = IncrementDate(date, rule);
}
else
{
ExpandedRosterEvent item = null;
if ((rangeBegin < time10) || ((rangeBegin == time10) && (itemLength.Ticks == 0L)))
{
item = new ExpandedRosterEvent(masterItem, false, null);
if (isAllDayEvent)
{
item.StartDate = itemBegin;
item.EndDate = time10;
}
else
{
item.StartDate = converter.ToLocal(itemBegin);
item.EndDate = converter.ToLocal(time10);
}
//item["ID"] = str2;
item.InstanceID = GenerateRecurrenceItemId(masterItem.Id, item.StartDate, localTZ, isAllDayEvent);
if (999 > list.Count)
{
list.Add(item);
}
}
date = IncrementDate(date, rule);
}
}
}
