toStringAsSmartRound method

String toStringAsSmartRound({ int maxPrecision = 2, })

Implementation

String toStringAsSmartRound({
  int maxPrecision = 2,
}) {
  final str = toString();
  try {
    if (str.contains('.')) {
      final split = str.split('');
      final mantissa = <String>[];
      final periodIndex = str.indexOf('.');
      final wholePart = str.substring(0, periodIndex);
      int numChars = 0;
      for (var i = periodIndex + 1; i < str.length; i++) {
        if (numChars >= maxPrecision) {
          break;
        }
        final char = split[i];
        // if (char == '0') {
        //   break;
        // } else {
        mantissa.add(char);
        // }
        numChars++;
      }
      if (mantissa.isNotEmpty) {
        int i = mantissa.length - 1;
        while (mantissa.isNotEmpty) {
          if (mantissa[i] != '0') {
            break;
          }
          i--;
          mantissa.removeLast();
        }
        if (mantissa.isNotEmpty) {
          return '$wholePart.${mantissa.join()}';
        }
      }
      return wholePart;
    }
  } catch (e) {
    if (kDebugMode) {
      print(e);
    }
  }
  return str;
}