mirror of
https://github.com/Luzifer/go-holidays.git
synced 2024-12-25 05:11:17 +00:00
46 lines
2.4 KiB
Go
46 lines
2.4 KiB
Go
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package holidays
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import "time"
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func init() {
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registerHolidayDataSource("us", holidaysUSNational{})
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}
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type holidaysUSNational struct{}
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func (h holidaysUSNational) GetIncludes() []string { return []string{} }
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func (h holidaysUSNational) GetHolidays(year int) []Holiday {
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return []Holiday{
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newHoliday("New Year's Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 1, 1))), // 1st January
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newHoliday("Birthday of Martin Luther King, Jr.", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 1, 15), time.Monday)), // Third Monday in January
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newHoliday("Washington's Birthday", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 2, 15), time.Monday)), // Third Monday in February
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newHoliday("Memorial Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 5, 25), time.Monday)), // Last Monday in May
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newHoliday("Independence Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 7, 4))), // 4 July
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newHoliday("Labor Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 9, 1), time.Monday)), // First Monday in September
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newHoliday("Columbus Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 10, 8), time.Monday)), // Second Monday in October
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newHoliday("Veterans Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 11, 11))), // 11 November
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newHoliday("Thanksgiving Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 11, 23), time.Thursday)), // Fourth Thursday in November
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newHoliday("Christmas Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 12, 25))), // 25 December
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}
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}
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func (h holidaysUSNational) findNextWeekday(in time.Time, wd time.Weekday) time.Time {
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for in.Weekday() != wd {
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in = in.Add(1 * 24 * time.Hour)
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}
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return in
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}
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// If a holiday falls on a Saturday it is celebrated the preceding Friday;
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// if a holiday falls on a Sunday it is celebrated the following Monday.
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func (h holidaysUSNational) fixWeekend(in time.Time) time.Time {
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switch in.Weekday() {
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case time.Saturday:
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return in.Add(-1 * 24 * time.Hour)
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case time.Sunday:
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return in.Add(1 * 24 * time.Hour)
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default:
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return in
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}
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}
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