| 1 | #include <errno.h> |
| 2 | #include <stdint.h> |
| 3 | |
| 4 | static uint64_t parse_number(const char *number, int is64) |
| 5 | { |
| 6 | int len = strlen(number); |
| 7 | const char *p = number; |
| 8 | char *endp = NULL; |
| 9 | uint64_t ret; |
| 10 | int neg = 0; |
| 11 | int bad; |
| 12 | |
| 13 | if (*p == '-') { |
| 14 | neg = 1; |
| 15 | p++; |
| 16 | } |
| 17 | if (len > 1 && *p == '0') |
| 18 | p++; |
| 19 | |
| 20 | errno = 0; |
| 21 | if (number[len - 1] == 'h') { |
| 22 | ret = strtouq(p, &endp, 16); |
| 23 | bad = (*endp != 'h'); |
| 24 | } |
| 25 | else { |
| 26 | ret = strtouq(p, &endp, 10); |
| 27 | bad = (*endp != 0); |
| 28 | } |
| 29 | if (errno != 0 || bad) |
| 30 | aerr("number parsing failed (%s): %d\n", number, errno); |
| 31 | // if this happens, callers must be fixed too |
| 32 | if (!is64 && ret > 0xfffffffful) |
| 33 | aerr("number too large? (%s)\n", number); |
| 34 | if (neg) { |
| 35 | if (!is64 && ret > 0x7fffffff) |
| 36 | aerr("too large negative? (%s)\n", number); |
| 37 | ret = -ret; |
| 38 | } |
| 39 | return ret; |
| 40 | } |
| 41 | |