checkNotNull(from);
    checkNotNull(to);
    char[] buf = new char[DEFAULT_BUF_SIZE];
    int nRead;
    long total = 0;
    while ((nRead = from.read(buf)) != -1) {
      to.append(buf, 0, nRead);
      total += nRead;
    }
    return total;
  }

  /**
   * Copies all characters between the {@link Reader} and {@link Writer} objects. Does not close or

		buf := make([]byte, 1024)
		for {
			// Read
			n, err := rb.Read(buf[:readRng.Intn(len(buf))])
			readBytes += n
			read.Write(buf[:n])
			debugln("READ 1\t", n, readBytes)
			if err != nil {
				readErr = err
				break
			}

			// ReadByte
			b, err := rb.ReadByte()
			if err != nil {
				readErr = err
				break
			}
			readBytes++
			read.Write([]byte{b})

}

func (r *checksumReader) Read(b []byte) (n int, err error) {
	if r.err != nil {
		return 0, r.err
	}
	n, err = r.rc.Read(b)
	r.hash.Write(b[:n])
	r.nread += uint64(n)
	if r.nread > r.f.UncompressedSize64 {
		return 0, ErrFormat
	}
	if err == nil {
		return
	}
	if err == io.EOF {
		if r.nread != r.f.UncompressedSize64 {
			return 0, io.ErrUnexpectedEOF
		}

                        break;
                    case '\'':
                        out.append('\'');
                        break;
                    case '\"':
                        out.append('"');
                        break;
                    case 'r':
                        out.append('\r');
                        break;
                    case 'f':

                        break;
                    case '\'':
                        out.append('\'');
                        break;
                    case '\"':
                        out.append('"');
                        break;
                    case 'r':
                        out.append('\r');
                        break;
                    case 'f':

        while (!eol) {
            switch (c = read()) {
            case -1:
            case '\n':
                eol = true;
                break;
            case '\r':
                eol = true;
                final long cur = fp;
                if (read() != '\n') {
                    fp = cur;
                }
                break;
            default:
                input.append((char) c);

scan:
	for {
		offset := d.pos - 1

		// read string key
		if c != '"' {
			err = d.mkError(ErrSyntax, "looking for beginning of object key string")
			break
		}
		if k, err = d.string(); err != nil {
			break
		}

		// read colon before value
		if c = d.skipSpaces(); c != ':' {
			err = d.mkError(ErrSyntax, "after object key")
			break
		}

		// read value
		d.skipSpaces()
		if d.emitKV {

    /**
     * Reads exactly len bytes from the input stream into the buffer.
     *
     * @param in the input stream to read from
     * @param b the buffer to read into
     * @param off the offset in the buffer to start writing
     * @param len the number of bytes to read
     * @return the number of bytes actually read
     * @throws IOException if an I/O error occurs
     */

OuterLoop:
	for {
		if s3Select.statement.LimitReached() {
			if !sendRecord() {
				break
			}
			if err = writer.Finish(s3Select.getProgress()); err != nil {
				// FIXME: log this error.
				err = nil
			}
			break
		}

		if rec, err = s3Select.recordReader.Read(rec); err != nil {
			if err != io.EOF {
				break
			}

			if s3Select.statement.IsAggregated() {

                try {
                    // Invalidate any cached read data
                    // This would typically clear file's internal read buffers
                    // For now, we log the action as the actual implementation
                    // depends on SmbFile's internal caching mechanism
                    log.info("Invalidated read cache for: {}", path);
                } catch (Exception e) {