parseDuration method

Implementation

Duration parseDuration() {
  final duration3Regex = RegExp(r'\d+:\d+:\d+(\.\d+)?');
  final duration2Regex = RegExp(r'\d+:\d+(\.\d+)?');

  var hours = 0;
  var minutes = 0;
  var micros = 0;
  String? formated;
  if (duration3Regex.hasMatch(this)) {
    formated = duration3Regex.firstMatch(this)!.group(0);
  } else if (duration2Regex.hasMatch(this)) {
    formated = duration2Regex.firstMatch(this)!.group(0);
  }
  if (formated.isNullOrEmpty) {
    return Duration.zero;
  }
  final parts = formated!.split(':');
  try {
    if (parts.isNotEmpty) {
      hours = int.parse(parts.first);
    }
    if (parts.length > 1) {
      minutes = int.parse(parts[1]);
    }
    if (parts.length > 2) {
      micros = (double.parse(parts[parts.length - 1]) * 1000000).round();
    }
    return Duration(hours: hours, minutes: minutes, microseconds: micros);
  } catch (_) {
    return Duration.zero;
  }
}