fromDuration static method

TinCanDuration? fromDuration(Duration? duration)

Implementation

static TinCanDuration? fromDuration(Duration? duration) {
  if (duration == null) {
    return null;
  }

  // 00:00:16.043000
  final pattern = RegExp(r'([0-9]+):([0-9]+):([0-9.]+)');
  final match = pattern.firstMatch(duration.toString())!;
  int inDays = duration.inDays;
  int? days = (inDays > 0) ? inDays : null;
  int? hours =
      (inDays > 0) ? (duration.inHours % 24) : int.tryParse(match.group(1)!);
  if (hours == 0) {
    hours = null;
  }
  int? minutes = int.tryParse(match.group(2)!);
  double? seconds = double.tryParse(match.group(3)!);
  // Truncate (round) to only 0.01 second precision
  if (seconds != null) {
    seconds = double.parse(seconds.toStringAsFixed(2));
  }
  final secondsString = (seconds == null)
      ? null
      : ((seconds.toInt() == seconds)
          ? seconds.toInt().toString()
          : seconds.toString());

  if (minutes == 0 && seconds == null) {
    minutes = null;
  }

  return TinCanDuration.fromParts(
    days: days?.toString(),
    hours: hours?.toString(),
    minutes: minutes?.toString(),
    seconds: secondsString,
  );
}