apply method

@override int apply(String s1, String s2)

Returns the score of similarity computed from s1 and s2

Implementation

@override
int apply(String s1, String s2) {
  String shorter;
  String longer;

  if (s1.length < s2.length) {
    shorter = s1;
    longer = s2;
  } else {
    shorter = s2;
    longer = s1;
  }

  var matchingBlocks = DiffUtils.getMatchingBlocks(shorter, longer);

  var scores = <double>[];

  for (var mb in matchingBlocks) {
    var dist = mb.dpos! - mb.spos!;

    var longStart = dist > 0 ? dist : 0;
    var longEnd = longStart + shorter.length;

    if (longEnd > longer.length) longEnd = longer.length;

    var longSubstr = longer.substring(longStart, longEnd);

    var ratio = DiffUtils.getRatio(shorter, longSubstr);

    if (ratio.isNaN) {
      continue;
    }

    if (ratio > 0.995) {
      return 100;
    } else {
      scores.add(ratio);
    }
  }

  return scores.isEmpty ? 0 : (100 * scores.reduce(max)).round();
}