// NewWriter returns a new table writer for the file. Closing the writer will
// close the file.
func NewWriter(f File, o *db.Options) *Writer {
w := &Writer{
closer: f,
blockRestartInterval: o.GetBlockRestartInterval(),
blockSize: o.GetBlockSize(),
cmp: o.GetComparer(),
compression: o.GetCompression(),
prevKey: make([]byte, 0, 256),
restarts: make([]uint32, 0, 256),
}
if f == nil {
w.err = errors.New("leveldb/table: nil file")
return w
}
// If f does not have a Flush method, do our own buffering.
type flusher interface {
Flush() error
}
if _, ok := f.(flusher); ok {
w.writer = f
} else {
w.bufWriter = bufio.NewWriter(f)
w.writer = w.bufWriter
}
return w
}
