private static int hexToBinary()

in commons-fileupload2-core/src/main/java/org/apache/commons/fileupload2/core/QuotedPrintableDecoder.java [93:100]

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

    private static int hexToBinary(final byte b) throws IOException {
        // CHECKSTYLE IGNORE MagicNumber FOR NEXT 1 LINE
        final var i = Character.digit((char) b, 16);
        if (i == -1) {
            throw new IOException("Invalid quoted printable encoding: not a valid hex digit: " + b);
        }
        return i;
    }