检查当前时间是否在给定间隔GOLANG中

Question

I am trying to find a way to check if the current time is in a given interval, where start and end are given (eventually) by a user.

I have been trying by using the After and Before from the Time package after making sure all times are in UTC, but clearly I am doing something wrong.

The code looks similar to this example:

func inTimeSpan(start, end, check time.Time) bool {
    return check.After(start) && check.Before(end)
}

func main() {

    now := time.Now()
    newLayout := "15:04"
    ns, _ := time.Parse(newLayout, strconv.Itoa(now.Hour())+":"+strconv.Itoa(now.Minute()))
    srt, _ := time.Parse(newLayout, "23:00")
    end, _ := time.Parse(newLayout, "05:00")

    fmt.Println("1 : ", inTimeSpan(srt, end, ns))
}

Any help is appreciated.

Answer 1

func inTimeSpan(start, end, check time.Time) bool {
    if check.After(end) {
        return false
    }
    if end.After(start) {
        return check.After(start)
    }
    return check.Before(start)
}

Check it on playground https://play.golang.org/p/ISFpxzIjvY_L

package main

import (
    "fmt"
    "time"
)

func inTimeSpan(start, end, check time.Time) bool {
    if check.After(end) {
        return false
    }
    if end.After(start) {
        return check.After(start)
    }
    return check.Before(start)
}

func main() {
    test := []struct {
        start string
        end   string
        check string
    }{
        {"23:00", "05:00", "04:00"},
        {"23:00", "05:00", "23:30"},
        {"23:00", "05:00", "20:00"},
        {"10:00", "21:00", "11:00"},
        {"10:00", "21:00", "22:00"},
        {"10:00", "21:00", "03:00"},
    }
    newLayout := "15:04"
    for _, t := range test {
        check, _ := time.Parse(newLayout, t.check)
        start, _ := time.Parse(newLayout, t.start)
        end, _ := time.Parse(newLayout, t.end)
        fmt.Println(t.start+"-"+t.end, t.check, inTimeSpan(start, end, check))
    }
}

Result:

23:00-05:00 04:00 true
23:00-05:00 23:30 false
23:00-05:00 20:00 false
10:00-21:00 11:00 true
10:00-21:00 22:00 false
10:00-21:00 03:00 false