golang implementation of opening hours (inspired by OpenStreetMap opening hours: http://wiki.openstreetmap.org/wiki/Key:opening_hours)
This Go library let you define time intervals in human-readable form and then check if specified time matches this interval.
Run go get github.com/yauhen-l/openhours
package main
import (
"fmt"
"time"
"github.com/yauhen-l/openhours"
)
func main() {
oh, errs := openhours.CompileOpenHours("Mo-We 06:00-17:00")
if len(errs) > 0 {
fmt.Printf("%v\n", errs)
return
}
fmt.Println(oh.Match(time.Now()))
}OpenHours simplified pattern:
OpenHours = (days(,days)*)? (MMM)? (Wds(,Wds)*)? (timespan(,timespans)*)?
days = day | day-day #Days of month
Wds = Wd | Wd-Wd #Weekdays
timespan = hh:mm-hh:mm #Day time range
| Openhours | Description |
|---|---|
| 24/7 | Matches everything |
| 24 Dec | Any time on 24th of December |
| 01-05 | Any time from 1st till 5th of any month |
| 18:00-18:30 | Any day from 6PM till 6:30PM |
| Sa,Su 10:00-22:00 | From 10AM till 10PM on Saturday and Sunday |
| Mo; Tu 9:00-15:00 | Any time on Monday and from 9AM till 3PM on Tuesday |
If want to extend syntax then you need to install few more packages:
// Lexer
go get github.com/blynn/nex
// Parser
go get github.com/cznic/goyacc
To verify changes:
go generate && go test -v