/// <summary>
/// Returns the input date, adjusted by rolling backwards if the input date falls on a holiday according to the specified calendar
/// </summary>
/// <param name="input">Input date</param>
/// <param name="calendar">Calendar</param>
/// <returns></returns>
public static DateTime IfHolidayRollBack(this DateTime input, Calendar calendar)
{
while (calendar.IsHoliday(input))
{
input = input.AddDays(-1);
}
return(input);
}
/// <summary>
/// Returns the input date, adjusted by rolling forward if the input date falls on a holiday according to the specified calendar
/// </summary>
/// <param name="input">Input date</param>
/// <param name="calendar">Calendar</param>
/// <returns></returns>
public static DateTime IfHolidayRollForward(this DateTime input, Calendar calendar)
{
input = input.Date;
while (calendar.IsHoliday(input))
{
input = input.AddDays(1);
}
return(input);
}
public static DateTime[] HolidaysForRange(this Calendar calendar, DateTime start, DateTime end)
{
var o = new List <DateTime>();
var d = start;
while (d <= end)
{
if (calendar.IsHoliday(d))
{
o.Add(d);
}
if (d.DayOfWeek == DayOfWeek.Friday)
{
d = d.AddDays(3);
}
else
{
d = d.AddDays(1);
}
}
return(o.ToArray());
}