Function New

pkg/splitwriter/split_writer.go:28–46

New returns an io.WriteCloser that writes to fname; when it's closed, fname will be split in multiple files each of which having at most maxsize bytes. Files are split on offsets where a \n is found, but if no \n is found the file isn't split.

(fname string, maxsize, bufsize int64)

// Files are split on offsets where a \n is found, but if no \n is found the
// file isn't split.
func New(fname string, maxsize, bufsize int64) (io.WriteCloser, error) {
	// Ensure split buffer is smaller than the split size.
	if maxsize < bufsize {
		return nil, fmt.Errorf("SplitWriter: maxsize < bufsize")
	}

	w := &splitWriter{
		maxsize: maxsize,
		bufsize: bufsize,
	}

	f, err := openSplit(fname)
	if err != nil {
		return nil, fmt.Errorf("SplitWriter: openSplit: %v", err)
	}
	w.f = f
	w.fname = f.Name()
	return w, nil
}

const (
	fflags = os.O_APPEND | os.O_CREATE | os.O_WRONLY