日历相关计算

calendar/creator.go

@@ -0,0 +1,40 @@
+package calendar
+
+import "time"
+
+func Now() Calendar {
+	return Create(time.Now())
+}
+
+func Today() Calendar {
+	return Now().BeginningOfDay()
+}
+
+func Create(t time.Time) Calendar {
+	return Calendar{
+		Time:         t,
+		weekStartsAt: WeekStartDay,
+	}
+}
+
+func CreateFromTimestamp(timestamp int64) Calendar {
+	return Create(time.Unix(timestamp, 0))
+}
+
+func CreateFromTimestampMilli(timestamp int64) Calendar {
+	return Create(time.Unix(timestamp/1e3, (timestamp%1e3)*1e6))
+}
+
+func CreateFromTimestampMicro(timestamp int64) Calendar {
+	return Create(time.Unix(timestamp/1e6, (timestamp%1e6)*1e3))
+}
+
+func CreateFromTimestampNano(timestamp int64) Calendar {
+	return Create(time.Unix(timestamp/1e9, timestamp%1e9))
+}
+
+func create(year, month, day, hour, minute, second, nanosecond int) Calendar {
+	return Calendar{
+		Time: time.Date(year, time.Month(month), day, hour, minute, second, nanosecond, time.Local),
+	}
+}