closed      bool
	compressors map[uint16]Compressor
	comment     string

	// testHookCloseSizeOffset if non-nil is called with the size
	// of offset of the central directory at Close.
	testHookCloseSizeOffset func(size, offset uint64)
}

type header struct {
	*FileHeader
	offset uint64
	raw    bool
}

// NewWriter returns a new [Writer] writing a zip file to w.
func NewWriter(w io.Writer) *Writer {

        SMBUtil.writeInt2(shareType, buffer, bufferIndex);
        bufferIndex += 2;

        // Write remark offset (4 bytes)
        int remarkOffset = shareNameSize + typeSize + offsetSize;
        SMBUtil.writeInt4(remarkOffset, buffer, bufferIndex);
        bufferIndex += 4;

        // Write remark at the calculated offset
        byte[] remarkBytes = remark.getBytes(StandardCharsets.US_ASCII);

      z = rotateRight(z + w[0], 33) * K1;
      weakHashLength32WithSeeds(bytes, offset, v[1] * K1, x + w[0], v);
      weakHashLength32WithSeeds(bytes, offset + 32, z + w[1], y + load64(bytes, offset + 16), w);
      long tmp = x;
      x = z;
      z = tmp;
      offset += 64;
    } while (offset != end);
    long mul = K1 + ((z & 0xFF) << 1);
    // Operate on the last 64 bytes of input.
    offset = last64offset;

    private void encodeSockaddr(byte[] buffer, int offset) {
        if (ipv6) {
            // IPv6 sockaddr_in6 structure
            writeInt2(buffer, offset, 23);  // AF_INET6
            writeInt2(buffer, offset + 2, 445);  // Port
            writeInt4(buffer, offset + 4, 0);  // Flow info
            System.arraycopy(address.getAddress(), 0, buffer, offset + 8, 16);
            writeInt4(buffer, offset + 24, 0);  // Scope ID
        } else {

        }
    }

    /**
     * Validate offset and length for file operations
     *
     * @param offset file offset
     * @param length operation length
     * @param fileSize total file size
     * @throws SmbException if parameters are invalid
     */
    public void validateFileOperation(long offset, long length, long fileSize) throws SmbException {

        byte[] data = response.getOutputBuffer();
        int offset = 0;
        
        while (offset < data.length) {
            int nextEntryOffset = readInt4(data, offset);
            int action = readInt4(data, offset + 4);
            int fileNameLength = readInt4(data, offset + 8);
            
            // Extract filename

        assertEquals(SmbComTransaction.TRANS_CALL_NAMED_PIPE, dst[offset]);
        assertEquals((byte) 0x00, dst[offset + 1]);
        assertEquals((byte) 0x00, dst[offset + 2]);
        assertEquals((byte) 0x00, dst[offset + 3]);
    }

    @Test
    @DisplayName("Test readSetupWireFormat returns 0")
    void testReadSetupWireFormat() {
        // Given

    @DisplayName("writeAndXWireFormat without andx writes 0xFF and sentinel offset")
    void testWriteAndXWireFormatWithoutAndx() {
        DummyAndXBlock block = new DummyAndXBlock();
        byte[] buf = new byte[128];
        int n = block.writeAndXWireFormat(buf, 0);

        assertTrue(n > 0);
        // Common AndX header: command at +1, reserved at +2, offset at +3/+4

      @Override
      public long getLongLittleEndian(byte[] source, int offset) {
        return Longs.fromBytes(
            source[offset + 7],
            source[offset + 6],
            source[offset + 5],
            source[offset + 4],
            source[offset + 3],
            source[offset + 2],
            source[offset + 1],
            source[offset]);
      }

      @Override

        byte[] buffer = new byte[512];
        int offset = 0;

        // Set header start position for the response
        setHeaderStart(response, 64);

        // Write structure header (9 bytes)
        SMBUtil.writeInt2(9, buffer, offset); // Structure size
        SMBUtil.writeInt2(80 - 64, buffer, offset + 2); // Buffer offset (relative to header)
        SMBUtil.writeInt4(50, buffer, offset + 4); // Total length of notification data