return ((0xFL << 4) | (codePoint >>> 18))
        | ((0x80L | (0x3F & (codePoint >>> 12))) << 8)
        | ((0x80L | (0x3F & (codePoint >>> 6))) << 16)
        | ((0x80L | (0x3F & codePoint)) << 24);
  }

  private static long charToThreeUtf8Bytes(char c) {
    return ((0x7L << 5) | (c >>> 12))
        | ((0x80 | (0x3F & (c >>> 6))) << 8)
        | ((0x80 | (0x3F & c)) << 16);
  }

        byte[] wireData = new byte[] { 0x10, 0x00, // StructureSize (must be 16)
                0x01, // ShareType (DISK)
                0x00, // Reserved
                0x01, 0x00, 0x00, 0x00, // ShareFlags
                0x08, 0x00, 0x00, 0x00, // Capabilities
                (byte) 0xFF, 0x01, 0x1F, 0x00 // MaximalAccess
        };

        // When

        assertEquals(0x10, SmbConstants.ATTR_DIRECTORY);
        assertEquals(0x20, SmbConstants.ATTR_ARCHIVE);
        assertEquals(0x800, SmbConstants.ATTR_COMPRESSED);
        assertEquals(0x080, SmbConstants.ATTR_NORMAL);
        assertEquals(0x100, SmbConstants.ATTR_TEMPORARY);
    }

    @Test
    @DisplayName("Should define access mask constants")
    void testAccessMaskConstants() {

    return ((0xFL << 4) | (codePoint >>> 18))
        | ((0x80L | (0x3F & (codePoint >>> 12))) << 8)
        | ((0x80L | (0x3F & (codePoint >>> 6))) << 16)
        | ((0x80L | (0x3F & codePoint)) << 24);
  }

  private static long charToThreeUtf8Bytes(char c) {
    return ((0x7L << 5) | (c >>> 12))
        | ((0x80 | (0x3F & (c >>> 6))) << 8)
        | ((0x80 | (0x3F & c)) << 16);
  }

    // extended file attribute encoding(others same as above)
    /** Compressed file attribute */
    int ATTR_COMPRESSED = 0x800;
    /** Normal file attribute */
    int ATTR_NORMAL = 0x080;
    /** Temporary file attribute */
    int ATTR_TEMPORARY = 0x100;

    // access mask encoding
    /** File read data access right */
    int FILE_READ_DATA = 0x00000001; // 1

        assertEquals(0x80, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_EA);
        assertEquals(0x100, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_SECURITY);
        assertEquals(0x200, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_NAME);
        assertEquals(0x400, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_SIZE);
        assertEquals(0x800, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_WRITE);
    }

    // extended file attribute encoding(others same as above)
    /**
     * File is compressed.
     */
    int ATTR_COMPRESSED = 0x800;
    /**
     * File is a normal file.
     */
    int ATTR_NORMAL = 0x080;
    /**
     * File is temporary.
     */
    int ATTR_TEMPORARY = 0x100;

    // access mask encoding
    /**
     * Permission to read data from the file.
     */

        assertEquals(0x40, Smb2CreateRequest.FILE_NON_DIRECTORY_FILE);
        assertEquals(0x100, Smb2CreateRequest.FILE_COMPLETE_IF_OPLOCKED);
        assertEquals(0x200, Smb2CreateRequest.FILE_NO_EA_KNOWLEDGE);
        assertEquals(0x400, Smb2CreateRequest.FILE_OPEN_REMOTE_INSTANCE);
        assertEquals(0x800, Smb2CreateRequest.FILE_RANDOM_ACCESS);
        assertEquals(0x1000, Smb2CreateRequest.FILE_DELETE_ON_CLOSE);

 * @author Bin Zhu
 * @author Colin Decker
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class CharStreams {

  // 2K chars (4K bytes)
  private static final int DEFAULT_BUF_SIZE = 0x800;

  /** Creates a new {@code CharBuffer} for buffering reads or writes. */
  static CharBuffer createBuffer() {
    return CharBuffer.allocate(DEFAULT_BUF_SIZE);
  }

  private CharStreams() {}

  /**

        for (char c : chars) {
            if (c < 0x80) {
                bytes[byteIndex++] = (byte) c;
            } else if (c < 0x800) {
                bytes[byteIndex++] = (byte) (0xC0 | (c >> 6));
                bytes[byteIndex++] = (byte) (0x80 | (c & 0x3F));
            } else {
                bytes[byteIndex++] = (byte) (0xE0 | (c >> 12));
                bytes[byteIndex++] = (byte) (0x80 | ((c >> 6) & 0x3F));