} // Round
// ----------------------------------------------------------------------
private int CalcYears()
{
if (TimeCompare.IsSameMonth(date1, date2))
{
return(0);
}
int compareDay = date2.Day;
int compareDaysPerMonth = calendar.GetDaysInMonth(Year1, Month2);
if (compareDay > compareDaysPerMonth)
{
compareDay = compareDaysPerMonth;
}
DateTime compareDate = new DateTime(Year1, Month2, compareDay,
date2.Hour, date2.Minute, date2.Second, date2.Millisecond);
if (date2 > date1)
{
if (compareDate < date1)
{
compareDate = compareDate.AddYears(1);
}
}
else
{
if (compareDate > date1)
{
compareDate = compareDate.AddYears(-1);
}
}
return(Year2 - calendar.GetYear(compareDate));
} // CalcYears
} // GetDuration
#endregion
#region Period
// ----------------------------------------------------------------------
public virtual string GetPeriod(DateTime start, DateTime end, TimeSpan duration)
{
if (end < start)
{
throw new ArgumentOutOfRangeException("end");
}
bool startHasTimeOfDay = TimeTool.HasTimeOfDay(start);
// no duration - schow start date (optionally with the time part)
if (duration == TimeSpec.MinPeriodDuration)
{
return(startHasTimeOfDay ? GetDateTime(start) : GetShortDate(start));
}
// within one day: show full start, end time and suration
if (TimeCompare.IsSameDay(start, end))
{
return(GetDateTime(start) + startEndSeparator + GetLongTime(end) + durationSeparator + GetDuration(duration));
}
// show start date, end date and duration (optionally with the time part)
bool endHasTimeOfDay = TimeTool.HasTimeOfDay(start);
bool hasTimeOfDays = startHasTimeOfDay || endHasTimeOfDay;
string startPart = hasTimeOfDays ? GetDateTime(start) : GetShortDate(start);
string endPart = hasTimeOfDays ? GetDateTime(end) : GetShortDate(end);
return(startPart + startEndSeparator + endPart + durationSeparator + GetDuration(duration));
} // GetPeriod
} // 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
} // CalcQuarters
// ----------------------------------------------------------------------
private int CalcMonths()
{
if (TimeCompare.IsSameDay(date1, date2))
{
return(0);
}
int compareDay = date2.Day;
int compareDaysPerMonth = calendar.GetDaysInMonth(Year1, Month1);
if (compareDay > compareDaysPerMonth)
{
compareDay = compareDaysPerMonth;
}
DateTime compareDate = new DateTime(Year1, Month1, compareDay,
date2.Hour, date2.Minute, date2.Second, date2.Millisecond);
if (date2 > date1)
{
if (compareDate < date1)
{
compareDate = compareDate.AddMonths(1);
}
}
else
{
if (compareDate > date1)
{
compareDate = compareDate.AddMonths(-1);
}
}
return
(((Year2 * TimeSpec.MonthsPerYear) + Month2) -
((calendar.GetYear(compareDate) * TimeSpec.MonthsPerYear) + calendar.GetMonth(compareDate)));
} // CalcMonths
} // 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