time

gistfile1.txt

func GetTimestamp(value string) string {
    format := RFC3339NanoFixed
    loc := time.FixedZone(time.Now().Zone())
    if len(value) < len(format) {
        format = format[:len(value)]
    }

    var shift time.Duration
    if i := strings.Index(value, "Z"); i > 0 && i != len(value)-1 {
        parts := strings.SplitN(value[i+1:], ":", 2)
        hr, err := strconv.Atoi(parts[0])
        if err != nil {
            return value
        }
        min, err := strconv.Atoi(parts[1])
        if err != nil {
            return value
        }
        shift = time.Duration(hr)*time.Hour + time.Duration(min)*time.Minute

        // now remove Z... from value
        value = value[:i+1]
    }

    var t time.Time
    var err error
    if shift != 0 {
        t, err = time.Parse(format, value)
        t = t.Add(shift)
    } else {
        t, err = time.ParseInLocation(format, value, loc)
    }

    if err != nil {
        return value
    }

    return strconv.FormatInt(t.Unix(), 10)
}