cloudinary-video-player/src/utils/time.js

Cloudinary Video Player

// https://github.com/csnover/js-iso8601/blob/master/iso8601.js
const numericKeys = [1, 4, 5, 6, 7, 10, 11];

const parseISO8601 = function (date) {
  let timestamp = 0;
  let struct = 0;
  let minutesOffset = 0;

  // ES5 §15.9.4.2 states that the string should attempt to be parsed as a Date Time String Format string
  // before falling back to any implementation-specific date parsing, so that’s what we do, even if native
  // implementations could be faster
  //              1 YYYY                2 MM       3 DD           4 HH    5 mm       6 ss        7 msec        8 Z 9 ±    10 tzHH    11 tzmm
  if ((struct = /^(\d{4}|[+\-]\d{6})(?:-(\d{2})(?:-(\d{2}))?)?(?:T(\d{2}):(\d{2})(?::(\d{2})(?:\.(\d{3}))?)?(?:(Z)|([+\-])(\d{2})(?::(\d{2}))?)?)?$/.exec(date))) {
    // avoid NaN timestamps caused by “undefined” values being passed to Date.UTC
    for (let i = 0, k; (k = numericKeys[i]); ++i) {
      struct[k] = +struct[k] || 0;
    }

    // allow undefined days and months
    struct[2] = (+struct[2] || 1) - 1;
    struct[3] = +struct[3] || 1;

    if (struct[8] !== 'Z' && struct[9] !== undefined) {
      minutesOffset = struct[10] * 60 + struct[11];

      if (struct[9] === '+') {
        minutesOffset = 0 - minutesOffset;
      }
    }

    timestamp = Date.UTC(struct[1], struct[2], struct[3], struct[4], struct[5] + minutesOffset, struct[6], struct[7]);
  } else {
    timestamp = NaN;
  }

  return timestamp;
};

export { parseISO8601 };