func writeCmd(cn *pool.Conn, cmds ...Cmder) error {
cn.Buf = cn.Buf[:0]
for _, cmd := range cmds {
var err error
cn.Buf, err = appendArgs(cn.Buf, cmd.args())
if err != nil {
return err
}
}
_, err := cn.Write(cn.Buf)
return err
}
func parseBytesReply(cn *pool.Conn, line []byte) ([]byte, error) {
if isNilReply(line) {
return nil, Nil
}
replyLen, err := strconv.Atoi(bytesToString(line[1:]))
if err != nil {
return nil, err
}
b, err := cn.ReadN(replyLen + 2)
if err != nil {
return nil, err
}
return b[:replyLen], nil
}
func (c *baseClient) initConn(cn *pool.Conn) error {
cn.Inited = true
if c.opt.Password == "" && c.opt.DB == 0 {
return nil
}
// Temp client for Auth and Select.
client := newClient(c.opt, pool.NewSingleConnPool(cn))
if c.opt.Password != "" {
if err := client.Auth(c.opt.Password).Err(); err != nil {
return err
}
}
if c.opt.DB > 0 {
if err := client.Select(c.opt.DB).Err(); err != nil {
return err
}
}
return nil
}