def decode()

in runtime/src/main/scala/org/apache/pekko/grpc/scaladsl/headers/PercentEncoding.scala [84:112]

• 28 lines of code
• 7 McCabe index (conditional complexity)

    def decode(value: String): String =
      if (value.indexOf('%') > -1)
        decodeSlow(value)
      else
        value

    private def decodeSlow(value: String): String = {
      val source = value.getBytes(TransferEncoding)
      val buf = ByteBuffer.allocate(source.length)
      var i = 0
      while (i < source.length) {
        if (source(i) == '%' && i + 2 < source.length) {
          val ch0 = Character.digit(source(i + 1), 16)
          val ch1 = Character.digit(source(i + 2), 16)
          if (ch0 > -1 && ch1 > -1) {
            val res = (ch0 << 4) + ch1
            buf.put(res.toByte)
            i += 3
          } else {
            buf.put(source(i))
            i += 1
          }
        } else {
          buf.put(source(i))
          i += 1
        }
      }
      new String(buf.array, 0, buf.position(), StandardCharsets.UTF_8)
    }