| 72 | } |
| 73 | |
| 74 | func ReadString(b string) (string, error) { |
| 75 | r := bufio.NewReader(strings.NewReader(b)) |
| 76 | line, err := readLine(r) |
| 77 | if err != nil { |
| 78 | return "", err |
| 79 | } |
| 80 | |
| 81 | switch line[0] { |
| 82 | default: |
| 83 | return "", ErrUnexpected |
| 84 | case '$': |
| 85 | // bulk strings are: `$5\r\nhello\r\n` |
| 86 | length, err := strconv.Atoi(line[1 : len(line)-2]) |
| 87 | if err != nil { |
| 88 | return "", err |
| 89 | } |
| 90 | if length < 0 { |
| 91 | // -1 is a nil response |
| 92 | return "", nil |
| 93 | } |
| 94 | var ( |
| 95 | buf = make([]byte, length+2) |
| 96 | pos = 0 |
| 97 | ) |
| 98 | for pos < length+2 { |
| 99 | n, err := r.Read(buf[pos:]) |
| 100 | if err != nil { |
| 101 | return "", err |
| 102 | } |
| 103 | pos += n |
| 104 | } |
| 105 | return string(buf[:len(buf)-2]), nil |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | func readInline(b string) (string, error) { |
| 110 | if len(b) < 3 { |