photoprism/internal/meta/duration.go

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package meta
import (
"regexp"
"strconv"
"strings"
"time"
)
var DurationSecondsRegexp = regexp.MustCompile("[0-9\\.]+")
// StringToDuration converts a metadata string to a valid duration.
func StringToDuration(s string) (d time.Duration) {
if s == "" {
return d
}
s = strings.TrimSpace(s)
sec := DurationSecondsRegexp.FindAllString(s, -1)
if len(sec) == 1 {
secFloat, _ := strconv.ParseFloat(sec[0], 64)
d = time.Duration(secFloat) * time.Second
} else if n := strings.Split(s, ":"); len(n) == 3 {
h, _ := strconv.Atoi(n[0])
m, _ := strconv.Atoi(n[1])
s, _ := strconv.Atoi(n[2])
d = time.Duration(h)*time.Hour + time.Duration(m)*time.Minute + time.Duration(s)*time.Second
} else if pd, err := time.ParseDuration(s); err != nil {
d = pd
}
return d
}