Method ReadLine

internal/proto/reader.go:260–290

ReadLine Return a valid reply, it will check the protocol or redis error, and discard the attribute type.

()

// ReadLine Return a valid reply, it will check the protocol or redis error,
// and discard the attribute type.
func (r *Reader) ReadLine() ([]byte, error) {
	line, err := r.readLine()
	if err != nil {
		return nil, err
	}
	switch line[0] {
	case RespError:
		return nil, ParseErrorReply(line)
	case RespNil:
		return nil, Nil
	case RespBlobError:
		var blobErr string
		blobErr, err = r.readStringReply(line)
		if err == nil {
			err = parseTypedRedisError(blobErr)
		}
		return nil, err
	case RespAttr:
		if err = r.Discard(line); err != nil {
			return nil, err
		}
		return r.ReadLine()
	}

	// Compatible with RESP2
	if IsNilReply(line) {
		return nil, Nil
	}

	return line, nil
}

// readLine returns an error if:
//   - there is a pending read error;