How to convert Youtube API V3 duration in Java

Question

The Youtube V3 API uses ISO8601 time format to describe the duration of videos. Something likes \"PT1M13S\". And now I want to convert the string to the number of seconds (for

Answer 1

In case you can be pretty sure about the validity of the input and can't use regex, I use this code (returns in miliseconds):

Integer parseYTDuration(char[] dStr) {
    Integer d = 0;

    for (int i = 0; i < dStr.length; i++) {
        if (Character.isDigit(dStr[i])) {
            String digitStr = "";
            digitStr += dStr[i];
            i++;
            while (Character.isDigit(dStr[i])) {
                digitStr += dStr[i];
                i++;
            }

            Integer digit = Integer.valueOf(digitStr);

            if (dStr[i] == 'H')
                d += digit * 3600;
            else if (dStr[i] == 'M')
                d += digit * 60;
            else
                d += digit;
        }
    }

    return d * 1000;
}