func NewLenWriter(buf *bytes2.ChunkedWriter) LenWriter {
off := buf.Len()
b := buf.Reserve(_WORD32)
return LenWriter{buf, off, b}
}
func putUint32(buf *bytes2.ChunkedWriter, val uint32) {
Pack.PutUint32(buf.Reserve(_WORD32), val)
}
func putUint64(buf *bytes2.ChunkedWriter, val uint64) {
Pack.PutUint64(buf.Reserve(_WORD64), val)
}
func EncodePrefix(buf *bytes2.ChunkedWriter, etype byte, key string) {
b := buf.Reserve(len(key) + 2)
b[0] = etype
copy(b[1:], key)
b[len(b)-1] = 0
}