Is there any easy way to convert an ISO 8601 string time duration (P(n)Y(n)M(n)DT(n)H(n)M(n)S) to time.Duration?
From Wikipedia on ISO 8601 durations:
For example, "P3Y6M4DT12H30M5S" represents a duration of "three years, six months, four days, twelve hours, thirty minutes, and five seconds".
There is no API in standard library for that, but there is a 3rd party library that can add ISO 8601 duration to a time.Time: https://godoc.org/github.com/senseyeio/duration#Duration.Shift.
ISO 8601 duration can not be generally converted to a time.Duration because it depends on the base time.Time.
https://play.golang.org/p/guybDGoJVrT
package main
import (
"fmt"
"time"
"github.com/senseyeio/duration"
)
func main() {
d, _ := duration.ParseISO8601("P1D")
today := time.Now()
tomorrow := d.Shift(today)
fmt.Println(today.Format("Jan _2")) // Nov 11
fmt.Println(tomorrow.Format("Jan _2")) // Nov 12
}
Finding existing solutions less than satisfactory I created my own module to parse ISO 8601 durations and convert them directly to a time.Duration. I hope you find it useful. :)
example usage: https://go.dev/play/p/Nz5akjy1c6W