# ioctetSortComparator function

int ioctetSortComparator(

1. String a,
2. String b

)

A sort comparator using the i;octet collation defined by RFC 4790

## Implementation

    // TODO(Unknown): Maybe enforce utf8?
    int ioctetSortComparator(String a, String b) {
      if (a.isEmpty && b.isEmpty) {
        return 0;
      }

      if (a.isEmpty && b.isNotEmpty) {
        return -1;
      }

      if (a.isNotEmpty && b.isEmpty) {
        return 1;
      }

      if (a[0] == b[0]) {
        return ioctetSortComparator(a.substring(1), b.substring(1));
      }

      // TODO(Unknown): Is this correct?
      if (a.codeUnitAt(0) < b.codeUnitAt(0)) {
        return -1;
      }

      return 1;
    }