Method pretty

src/Bytes.java:335–366

Pretty-prints a byte array into a human-readable output buffer. @param outbuf The buffer where to write the output. @param array The (possibly null) array to pretty-print.

(final StringBuilder outbuf, final byte[] array)

   * @param array The (possibly {@code null}) array to pretty-print.
   */
  public static void pretty(final StringBuilder outbuf, final byte[] array) {
    if (array == null) {
      outbuf.append("null");
      return;
    }
    int ascii = 0;
    final int start_length = outbuf.length();
    final int n = array.length;
    outbuf.ensureCapacity(start_length + 1 + n + 1);
    outbuf.append('"');
    for (int i = 0; i < n; i++) {
      final byte b = array[i];
      if (' ' <= b && b <= '~') {
        ascii++;
        outbuf.append((char) b);
      } else if (b == '\n') {
        outbuf.append('\\').append('n');
      } else if (b == '\t') {
        outbuf.append('\\').append('t');
      } else {
        outbuf.append("\\x")
          .append((char) HEX[(b >>> 4) & 0x0F])
          .append((char) HEX[b & 0x0F]);
      }
    }
    if (ascii < n / 2) {
      outbuf.setLength(start_length);
      outbuf.append(Arrays.toString(array));
    } else {
      outbuf.append('"');
    }
  }

  /**
   * Pretty-prints an array of byte arrays into a human-readable output buffer.