func (w *Writer) write(rtype uint, record []byte) (err error) {
rlen := len(record)
buf := &w.buf
buf.Reset()
crc := hash.NewCRC32C()
crc.Write([]byte{byte(rtype)})
crc.Write(record)
binary.Write(buf, binary.LittleEndian, hash.MaskCRC32(crc.Sum32()))
buf.WriteByte(byte(rlen & 0xff))
buf.WriteByte(byte(rlen >> 8))
buf.WriteByte(byte(rtype))
_, err = buf.WriteTo(w.w)
if err == nil {
_, err = w.w.Write(record)
}
return err
}
func (t *Writer) write(buf []byte, bi *bInfo, raw bool) (err error) {
compression := opt.NoCompression
if !raw {
compression = t.o.GetCompressionType()
}
switch compression {
case opt.SnappyCompression:
buf, err = snappy.Encode(nil, buf)
if err != nil {
return
}
}
if bi != nil {
bi.offset = uint64(t.off)
bi.size = uint64(len(buf))
}
_, err = t.w.Write(buf)
if err != nil {
return
}
compbit := []byte{byte(compression)}
_, err = t.w.Write(compbit)
if err != nil {
return
}
crc := hash.NewCRC32C()
crc.Write(buf)
crc.Write(compbit)
err = binary.Write(t.w, binary.LittleEndian, hash.MaskCRC32(crc.Sum32()))
if err != nil {
return
}
t.off += len(buf) + 5
return
}