private def isEscapingChar()

in runtime/src/main/scala/org/apache/pekko/grpc/scaladsl/headers/PercentEncoding.scala [53:77]

• 21 lines of code
• 5 McCabe index (conditional complexity)

    private def isEscapingChar(b: Byte): Boolean = b < ' ' || b >= '~' || b == '%'

    private def encodeSlow(valueBytes: Array[Byte], riArg: Int): String = {
      var ri = riArg
      val escapedBytes = new Array[Byte](riArg + ((valueBytes.length - riArg) * 3))
      // copy over the good bytes
      if (riArg != 0) System.arraycopy(valueBytes, 0, escapedBytes, 0, riArg)
      var wi = ri

      while (ri < valueBytes.length) {
        val b = valueBytes(ri)
        // Manually implement URL encoding, per the gRPC spec.
        if (isEscapingChar(b)) {
          escapedBytes.update(wi, '%')
          escapedBytes.update(wi + 1, HexArr((b >> 4) & 0xF))
          escapedBytes.update(wi + 2, HexArr(b & 0xF))
          wi += 3
        } else {
          escapedBytes.update(wi, b)
          wi += 1
        }
        ri += 1
      }
      new String(escapedBytes, 0, wi, StandardCharsets.US_ASCII)
    }