import jcifs.internal.util.SMBUtil;

/**
 * SMB1 Seek command response implementation.
 * Handles server responses to file seek operations, returning the new file
 * position after a seek request in SMB1 protocol file operations.
 *
 * @author mbechler
 */
public class SmbComSeekResponse extends ServerMessageBlock {

    private long offset;

    /**
     * Constructs a seek response.
     *

     */
    public void setFid(final int fid) {
        this.fid = fid;
    }

    /**
     * Sets the seek mode.
     *
     * @param mode
     *            the mode to set
     */
    public final void setMode(final int mode) {
        this.mode = mode;
    }

    /**
     * Sets the seek offset.
     *
     * @param offset
     *            the offset to set
     */

		// io.Seeker, but calling Seek always returns an error and performs
		// no action. Thus, we try an innocent seek to the current position
		// to see if Seek is really supported.
		pos1, err := sr.Seek(0, io.SeekCurrent)
		if pos1 >= 0 && err == nil {
			// Seek seems supported, so perform the real Seek.
			pos2, err := sr.Seek(n-1, io.SeekCurrent)
			if pos2 < 0 || err != nil {
				return err

pkg io, type Seeker interface { Seek }
pkg io, type Seeker interface, Seek(int64, int) (int64, error)
pkg io, type WriteCloser interface { Close, Write }
pkg io, type WriteCloser interface, Close() error
pkg io, type WriteCloser interface, Write([]uint8) (int, error)
pkg io, type WriteSeeker interface { Seek, Write }
pkg io, type WriteSeeker interface, Seek(int64, int) (int64, error)

	return nil
}

// Seek implements the [io.Seeker] interface.
func (r *Reader) Seek(offset int64, whence int) (int64, error) {
	r.prevRune = -1
	var abs int64
	switch whence {
	case io.SeekStart:
		abs = offset
	case io.SeekCurrent:
		abs = r.i + offset
	case io.SeekEnd:
		abs = int64(len(r.s)) + offset
	default:
		return 0, errors.New("bytes.Reader.Seek: invalid whence")
	}
	if abs < 0 {

      sinkBuffer.write(maskKey)

      if (length > 0) {
        val payloadStart = sinkBuffer.size
        sinkBuffer.write(payload)

        sinkBuffer.readAndWriteUnsafe(maskCursor!!)
        maskCursor.seek(payloadStart)
        toggleMask(maskCursor, maskKey)
        maskCursor.close()
      }
    } else {
      sinkBuffer.writeByte(b1)
      sinkBuffer.write(payload)
    }

    sink.flush()
  }

	return &ObjectReadSeekCloser{
		segmentReader: segmentReader,
		size:          actualSize,
		offset:        0,
		reader:        nil,
	}
}

// Seek call to implement io.Seeker
func (rsc *ObjectReadSeekCloser) Seek(offset int64, whence int) (int64, error) {
	// fmt.Printf("actual: %v offset: %v (%v) whence: %v\n", rsc.size, offset, rsc.offset, whence)
	switch whence {
	case io.SeekStart:

It is your responsibility to ensure that your use and/or transfer does not
violate applicable laws. 

For more information, please see http://www.bis.doc.gov

"\u5348\u5f8c"===e},meridiem:function(e,a,t){return e<12?"\u5348\u524d":"\u5348\u5f8c"},calendar:{sameDay:"[\u4eca\u65e5] LT",nextDay:"[\u660e\u65e5] LT",nextWeek:function(e){return e.week()!==this.week()?"[\u6765\u9031]dddd LT":"dddd LT"},lastDay:"[\u6628\u65e5] LT",lastWeek:function(e){return this.week()!==e.week()?"[\u5148\u9031]dddd LT":"dddd LT"},sameElse:"L"},dayOfMonthOrdinalParse:/\d{1,2}\u65e5/,ordinal:function(e,a){switch(a){case"y":return 1===e?"\u5143\u5e74":e+"\u5e74";case"d":case"D":case"DDD":return...

    options:
        members:
            - file
            - filename
            - size
            - headers
            - content_type
            - read
            - write
            - seek