negative-lookahead.go

// Unsupported Pattern because of negative look-ahead
// PATTERN = "(.*?)((BI)-(\w+)-(\d{4}-\d{4}-\d{4}(?!-\d{4})))"

// Workaround?
for _, line := range lines {
  // If we have 3 digit groups we found a candidate!
  if match, _ := regexp.MatchString("(.*?)((BI)-(\w+)-(\d{4}-\d{4}-\d{4}", text); match == true {
    // But if we have 4 digit groups this shouldn't be handled!
    // This is what the negative lookahead would prevent in the first place
    if match, _ := regexp.MatchString("(.*?)((BI)-(\w+)-(\d{4}-\d{4}-\d{4}-\d{4}", text); match == true {
      continue
    }
    handle(line)
  }
}

func handle(line string) {
  return // magic
}