} // IsSameQuarter
// ----------------------------------------------------------------------
public static bool IsSameQuarter(YearMonth yearStartMonth, DateTime left, DateTime right)
{
int leftYear = TimeTool.GetYearOf(yearStartMonth, left);
int rightYear = TimeTool.GetYearOf(yearStartMonth, right);
if (leftYear != rightYear)
{
return(false);
}
return(TimeTool.GetQuarterOfMonth(yearStartMonth, (YearMonth)left.Month) == TimeTool.GetQuarterOfMonth(yearStartMonth, (YearMonth)right.Month));
} // IsSameQuarter
} // CalcMonths
private int CalcWeeks()
{
if (TimeCompare.IsSameDay(date1, date2))
{
return(0);
}
DateTime week1 = TimeTool.GetStartOfWeek(date1, firstDayOfWeek);
DateTime week2 = TimeTool.GetStartOfWeek(date2, firstDayOfWeek);
if (week1.Equals(week2))
{
return(0);
}
return((int)(week2.Subtract(week1).TotalDays / TimeSpec.DaysPerWeek));
} // CalcWeeks
} // CalcYears
private int CalcQuarters()
{
if (TimeCompare.IsSameMonth(date1, date2))
{
return(0);
}
int year1 = TimeTool.GetYearOf(yearBaseMonth, Year1, Month1);
YearQuarter quarter1 = TimeTool.GetQuarterOfMonth(yearBaseMonth, (YearMonth)Month1);
int year2 = TimeTool.GetYearOf(yearBaseMonth, Year2, Month2);
YearQuarter quarter2 = TimeTool.GetQuarterOfMonth(yearBaseMonth, (YearMonth)Month2);
return
(((year2 * TimeSpec.QuartersPerYear) + quarter2) -
((year1 * TimeSpec.QuartersPerYear) + quarter1));
} // CalcQuarters
} // IsSameWeek
// ----------------------------------------------------------------------
public static bool IsSameWeek(DateTime left, DateTime right, CultureInfo culture,
CalendarWeekRule weekRule, DayOfWeek firstDayOfWeek, YearWeekType weekType)
{
if (culture == null)
{
throw new ArgumentNullException("culture");
}
// left
int leftWeekOfYear;
int leftYear;
TimeTool.GetWeekOfYear(left, culture, weekRule, firstDayOfWeek, weekType, out leftYear, out leftWeekOfYear);
// rught
int rightWeekOfYear;
int rightYear;
TimeTool.GetWeekOfYear(right, culture, weekRule, firstDayOfWeek, weekType, out rightYear, out rightWeekOfYear);
return(leftYear == rightYear && leftWeekOfYear == rightWeekOfYear);
} // IsSameWeek
} // IsSameYear
// ----------------------------------------------------------------------
public static bool IsSameYear(YearMonth yearStartMonth, DateTime left, DateTime right)
{
return(TimeTool.GetYearOf(yearStartMonth, left) == TimeTool.GetYearOf(yearStartMonth, right));
} // IsSameYear
} // GetCalendarPeriod
#endregion
#region Interval
// ----------------------------------------------------------------------
public string GetInterval(DateTime start, DateTime end,
IntervalEdge startEdge, IntervalEdge endEdge, TimeSpan duration)
{
if (end < start)
{
throw new ArgumentOutOfRangeException("end");
}
StringBuilder sb = new StringBuilder();
// interval start
switch (startEdge)
{
case IntervalEdge.Closed:
sb.Append(IntervalStartClosed);
break;
case IntervalEdge.Open:
sb.Append(UseIsoIntervalNotation ? intervalStartOpenIso : intervalStartOpen);
break;
}
bool addDuration = true;
bool startHasTimeOfDay = TimeTool.HasTimeOfDay(start);
// no duration - schow start date (optionally with the time part)
if (duration == TimeSpec.MinPeriodDuration)
{
sb.Append(startHasTimeOfDay ? GetDateTime(start) : GetShortDate(start));
addDuration = false;
}
// within one day: show full start, end time and suration
else if (TimeCompare.IsSameDay(start, end))
{
sb.Append(GetDateTime(start));
sb.Append(startEndSeparator);
sb.Append(GetLongTime(end));
}
else
{
bool endHasTimeOfDay = TimeTool.HasTimeOfDay(start);
bool hasTimeOfDays = startHasTimeOfDay || endHasTimeOfDay;
if (hasTimeOfDays)
{
sb.Append(GetDateTime(start));
sb.Append(startEndSeparator);
sb.Append(GetDateTime(end));
}
else
{
sb.Append(GetShortDate(start));
sb.Append(startEndSeparator);
sb.Append(GetShortDate(end));
}
}
// interval end
switch (endEdge)
{
case IntervalEdge.Closed:
sb.Append(IntervalEndClosed);
break;
case IntervalEdge.Open:
sb.Append(UseIsoIntervalNotation ? IntervalEndOpenIso : IntervalEndOpen);
break;
}
// duration
if (addDuration)
{
sb.Append(durationSeparator);
sb.Append(GetDuration(duration));
}
return(sb.ToString());
} // GetInterval