* in (by dividing by 4) and out (by multiplying by 4).
   */
  private fun findRangesOffset(
    codePoint: Int,
    position: Int,
    limit: Int,
  ): Int {
    val target = codePoint and 0x7f
    val offset =
      binarySearch(
        position = position,
        limit = limit,
      ) { index ->
        val entryIndex = index * 4
        val b0 = ranges[entryIndex].code

        assertEquals(999, bufDataStartField.get(response));
    }

    @ParameterizedTest
    @DisplayName("Test reserved bytes are properly skipped")
    @ValueSource(bytes = { 0x00, 0x01, (byte) 0xFF, 0x7F, (byte) 0x80 })
    void testReservedBytesSkipped(byte reservedValue) throws Exception {
        byte[] buffer = new byte[100];
        int bufferIndex = 0;

    // Lots of headers need more room!
    hpackReader = Hpack.Reader(bytesIn, 16384, 4096)
    bytesIn.writeByte(0x3F) // Dynamic table size update (size = 16384).
    bytesIn.writeByte(0xE1)
    bytesIn.writeByte(0x7F)
    for (i in 0..255) {
      bytesIn.writeByte(0x40) // Literal indexed
      bytesIn.writeByte(0x0a) // Literal name (len = 10)
      bytesIn.writeUtf8("custom-foo")

      encodings[0x1c] = encoding // File Separator
      encodings[0x1d] = encoding // Group Separator
      encodings[0x1e] = encoding // Record Separator
      encodings[0x1f] = encoding // Unit Separator
      encodings[0x7f] = encoding // Delete
    }

  fun nonAscii(encoding: Encoding) =
    apply {
      encodings[UNICODE_2] = encoding
      encodings[UNICODE_3] = encoding
      encodings[UNICODE_4] = encoding
    }

        key8[5] = (byte) (((key7[4] & 0x1F) << 2 | (key7[5] & 0xff) >> 6 & 0xff) & 0xff);
        key8[6] = (byte) (((key7[5] & 0x3F) << 1 | (key7[6] & 0xff) >> 7 & 0xff) & 0xff);
        key8[7] = (byte) (key7[6] & 0x7F);
        for (i = 0; i < 8; i++) {
            key8[i] = (byte) (key8[i] << 1);
        }
    }

    /// Set the key.
    /**
     * Sets the DES encryption key
     * @param key the 8-byte DES key

        // Intercept the 3-arg write to validate len
        doNothing().when(raf).write(any(byte[].class), anyInt(), anyInt());
        raf.writeBoolean(true);
        raf.writeByte(0x7F);
        ArgumentCaptor<Integer> lenCap = ArgumentCaptor.forClass(Integer.class);
        verify(raf, atLeast(2)).write(any(byte[].class), anyInt(), lenCap.capture());

   * prefix, or when one array is a prefix of the other, treats the shorter array as the lesser. For
   * example, {@code [] < [0x01] < [0x01, 0x7F] < [0x01, 0x80] < [0x02]}. Values are treated as
   * unsigned.
   *
   * <p>The returned comparator is inconsistent with {@link Object#equals(Object)} (since arrays

import com.google.common.annotations.GwtCompatible;
import java.nio.charset.StandardCharsets;

/**
 * Static methods pertaining to ASCII characters (those in the range of values {@code 0x00} through
 * {@code 0x7F}), and to strings containing such characters.
 *
 * <p>ASCII utilities also exist in other classes of this package:
 *
 * <ul>
 *   <!-- TODO(kevinb): how can we make this not produce a warning when building gwt javadoc? -->

// TODO: update when package unicode captures more of the properties.
func isSeparator(r rune) bool {
	// ASCII alphanumerics and underscore are not separators
	if r <= 0x7F {
		switch {
		case '0' <= r && r <= '9':
			return false
		case 'a' <= r && r <= 'z':
			return false
		case 'A' <= r && r <= 'Z':
			return false
		case r == '_':
			return false
		}

            if (ch > 0xfff) {
                out.append("\\u").append(hex(ch));
            } else if (ch > 0xff) {
                out.append("\\u0").append(hex(ch));
            } else if (ch > 0x7f) {
                out.append("\\u00").append(hex(ch));
            } else if (ch < 32) {
                switch (ch) {
                    case '\b':
                        out.append('\\');