func (b *streamingBitrotReader) ReadAt(buf []byte, offset int64) (int, error) {
	var err error
	if offset%b.shardSize != 0 {
		// Offset should always be aligned to b.shardSize
		// Can never happen unless there are programmer bugs
		return 0, errUnexpected
	}
	if b.rc == nil {
		// For the first ReadAt() call we need to open the stream for reading.
		b.currOffset = offset
		streamOffset := (offset/b.shardSize)*int64(b.h.Size()) + offset

     * @param offset
     *            The starting offset in the input data
     * @param len
     *            The length of data to process
     */
    public void update(final byte[] input, final int offset, final int len) {
        if (log.isTraceEnabled()) {
            log.trace("update: " + this.updates + " " + offset + ":" + len);

     * @param pageSize the number of records per page
     * @param offset the offset value for pagination
     */
    protected QueryResponseList(final List<Map<String, Object>> documentList, final int start, final int pageSize, final int offset) {
        parent = documentList;
        this.offset = offset;
        this.start = start;
        this.pageSize = pageSize;
    }

    /**

     * Verifies that the method returns the correct time zone offset.
     * @throws CIFSException
     */
    @Test
    void testGetServerTimeZoneOffset() throws CIFSException {
        when(smbTreeHandle.getServerTimeZoneOffset()).thenReturn(0L);
        assertEquals(0L, smbTreeHandle.getServerTimeZoneOffset(), "Server time zone offset should be 0");
        when(smbTreeHandle.getServerTimeZoneOffset()).thenReturn(3600000L);

     */
    public final void setMode(final int mode) {
        this.mode = mode;
    }

    /**
     * Sets the seek offset.
     *
     * @param offset
     *            the offset to set
     */
    public final void setOffset(final long offset) {
        this.offset = offset;
    }

    /**
     * {@inheritDoc}
     *

    @Test
    @DisplayName("Test writeSetupWireFormat with offset")
    void testWriteSetupWireFormatWithOffset() {
        trans2SetFileInfo = new Trans2SetFileInformation(config, TEST_FID, mockFileInfo);

        byte[] buffer = new byte[256];
        int offset = 50;
        int written = trans2SetFileInfo.writeSetupWireFormat(buffer, offset);

        // Should write 2 bytes at offset
        assertEquals(2, written);

    @DisplayName("Should handle hexdump with offset")
    void testHexdumpWithOffset() {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PrintStream ps = new PrintStream(baos);

        // Create test data and dump from offset
        byte[] data = createTestData(64);
        int offset = 16;
        int length = 32;

        Hexdump.hexdump(ps, data, offset, length);

        }
        return start;
    }

    @Override
    public int getOffset() {
        if (offset == null) {
            offset = 0;
        }
        return offset;
    }

    @Override
    public int getPageSize() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (num == null) {

    /** The buffer of bytes sent to the stream */
    private byte[] buffer = new byte[DEFAULT_BUFFER_LENGTH];

    /** Offset of the start of unwritten data in the buffer */
    private int start = 0;

    /** Offset of the end (semi-open) of unwritten data in the buffer */
    private int end = 0;

    @Override
    public void write(final int b) throws IOException {

            // Verify all chunks
            int offset = HEADER_SIZE;
            assertEquals(0L, SMBUtil.readInt8(buffer, offset));
            assertEquals(1024L, SMBUtil.readInt8(buffer, offset + 8));
            assertEquals(4096, SMBUtil.readInt4(buffer, offset + 16));

            offset += CHUNK_SIZE;
            assertEquals(4096L, SMBUtil.readInt8(buffer, offset));