Bind to new library version

cmd/holiday-api/Godeps/Godeps.json

@@ -1,11 +1,11 @@
 {
 	"ImportPath": "github.com/Luzifer/go-holidays/cmd/holiday-api",
 	"GoVersion": "go1.7",
-	"GodepVersion": "v74",
+	"GodepVersion": "v78",
 	"Deps": [
 		{
 			"ImportPath": "github.com/Luzifer/go-holidays",
-			"Rev": "ba0fe43284501de6dd5e299ddbfd4c0ae6a54c43"
+			"Rev": "025b87d81e0ce8649eeba2d11c9aa75aaf2e0aa3"
 		},
 		{
 			"ImportPath": "github.com/Luzifer/rconfig",

cmd/holiday-api/vendor/github.com/Luzifer/go-holidays/holidays_us.go

@@ -0,0 +1,45 @@
+package holidays
+
+import "time"
+
+func init() {
+	registerHolidayDataSource("us", holidaysUSNational{})
+}
+
+type holidaysUSNational struct{}
+
+func (h holidaysUSNational) GetIncludes() []string { return []string{} }
+func (h holidaysUSNational) GetHolidays(year int) []Holiday {
+	return []Holiday{
+		newHoliday("New Year's Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 1, 1))),                                         // 1st January
+		newHoliday("Birthday of Martin Luther King, Jr.", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 1, 15), time.Monday)), // Third Monday in January
+		newHoliday("Washington's Birthday", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 2, 15), time.Monday)),               // Third Monday in February
+		newHoliday("Memorial Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 5, 25), time.Monday)),                        // Last Monday in May
+		newHoliday("Independence Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 7, 4))),                                       // 4 July
+		newHoliday("Labor Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 9, 1), time.Monday)),                            // First Monday in September
+		newHoliday("Columbus Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 10, 8), time.Monday)),                        // Second Monday in October
+		newHoliday("Veterans Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 11, 11))),                                         // 11 November
+		newHoliday("Thanksgiving Day", map[string]string{}, h.findNextWeekday(dateFromNumbers(year, 11, 23), time.Thursday)),                 // Fourth Thursday in November
+		newHoliday("Christmas Day", map[string]string{}, h.fixWeekend(dateFromNumbers(year, 12, 25))),                                        // 25 December
+	}
+}
+
+func (h holidaysUSNational) findNextWeekday(in time.Time, wd time.Weekday) time.Time {
+	for in.Weekday() != wd {
+		in = in.Add(1 * 24 * time.Hour)
+	}
+	return in
+}
+
+// If a holiday falls on a Saturday it is celebrated the preceding Friday;
+// if a holiday falls on a Sunday it is celebrated the following Monday.
+func (h holidaysUSNational) fixWeekend(in time.Time) time.Time {
+	switch in.Weekday() {
+	case time.Saturday:
+		return in.Add(-1 * 24 * time.Hour)
+	case time.Sunday:
+		return in.Add(1 * 24 * time.Hour)
+	default:
+		return in
+	}
+}