words function

List<String> words(String original)

Separate a String into a List of words.

Implementation

List<String> words(String original) {
  if (original.isEmpty ||
      listSubtractAll(original.codeUnits, kWhitespaceCodes).isEmpty) {
    return [];
  }
  if (listIntersect(kWhitespaceCodes, original.codeUnits).isEmpty) {
    return [original];
  }

  List<String> result = [];

  String currentWord = '';
  for (int i = 0; i < original.length; i++) {
    String currentChar = original.substring(i, i + 1);
    int currentCode = original.substring(i, i + 1).codeUnits.first;
    if (!kWhitespaceCodes.contains(currentCode)) {
      currentWord += currentChar;
    } else {
      if (currentWord.isNotEmpty) {
        result.add(currentWord);
        currentWord = '';
      }
      continue;
    }
  }
  //add last word
  if (currentWord.isNotEmpty) {
    result.add(currentWord);
  }

  return result;
}