示例#1
0
// Read a bulk as defined in the Redis protocol
//
// This functon is similar to that of gedis.ReadBulk, however given
// that a Redis client can only send a multi-bulk requests that only
// include non-nil bulks of bytes, a simplified version that returns a
// sequence of bytes is provided.
func readBulk(r gedis.Reader) (bs []byte, err error) {
	var b byte

	b, err = readByte(r)
	if err != nil {
		return bs, err
	} else if b != '$' {
		return bs, gedis.NewParseError("Invalid first character")
	}

	n, err := gedis.ReadNumber(r)
	if err != nil {
		return bs, err
	}

	bs = make([]byte, n)

	_, err = r.Read(bs)
	if err != nil {
		return bs, err
	}

	crlf := make([]byte, 2)

	if _, err = r.Read(crlf); err != nil {
		return bs, err
	}

	if crlf[0] != '\r' || crlf[1] != '\n' {
		return bs, gedis.NewParseError("Invalid EOL")
	}

	return
}
示例#2
0
// Helper function to read the next byte in a gedis.Reader
func readByte(r gedis.Reader) (byte, error) {
	b := make([]byte, 1)
	_, err := r.Read(b)
	return b[0], err
}