Dartでsplit

Kotlinの.split('\n', ignoreCase = false, limit = 4)と同等の動作をする関数の例です。

List<String> splitWithLimit(String input, String separator, int limit, {bool ignoreCase = false}) {
  List<String> result = [];
  int currentIndex = 0;
  int matchIndex = ignoreCase ? input.toLowerCase().indexOf(separator.toLowerCase()) : input.indexOf(separator);

  while (matchIndex != -1 && result.length < limit - 1) {
    result.add(input.substring(currentIndex, matchIndex));
    currentIndex = matchIndex + separator.length;
    matchIndex = ignoreCase ? input.toLowerCase().indexOf(separator.toLowerCase(), currentIndex) : input.indexOf(separator, currentIndex);
  }

  result.add(input.substring(currentIndex));

  return result;
}