GetUint64 returns the value retrieved by internalGet, cast to a uint64 if possible. Negative values and malformed integers return MalformedValueError; values larger than uint64 return OverflowIntegerError. SYS-REQ-003
(data []byte, keys ...string)
| 2144 | // values larger than uint64 return OverflowIntegerError. |
| 2145 | // SYS-REQ-003 |
| 2146 | func GetUint64(data []byte, keys ...string) (uint64, error) { |
| 2147 | v, t, _, _, err := internalGet(data, keys...) |
| 2148 | if err != nil { |
| 2149 | return 0, err |
| 2150 | } |
| 2151 | |
| 2152 | if t != Number { |
| 2153 | if t == Null { |
| 2154 | return 0, NullValueError |
| 2155 | } |
| 2156 | return 0, fmt.Errorf("Value is not a number: %s", string(v)) |
| 2157 | } |
| 2158 | |
| 2159 | if n, ok, _ := parseInt(v); ok { |
| 2160 | if n < 0 { |
| 2161 | return 0, MalformedValueError |
| 2162 | } |
| 2163 | return uint64(n), nil |
| 2164 | } |
| 2165 | |
| 2166 | n, parseErr := strconv.ParseUint(string(v), 10, 64) |
| 2167 | if parseErr == nil { |
| 2168 | return n, nil |
| 2169 | } |
| 2170 | |
| 2171 | var numErr *strconv.NumError |
| 2172 | if errors.As(parseErr, &numErr) && numErr.Err == strconv.ErrRange { |
| 2173 | return 0, OverflowIntegerError |
| 2174 | } |
| 2175 | return 0, MalformedValueError |
| 2176 | } |
| 2177 | |
| 2178 | // SYS-REQ-112 |
| 2179 | func containerStart(data []byte, open byte, keys ...string) (int, error) { |