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contrib/one-true-awk/lib.c
| Show First 20 Lines • Show All 787 Lines • ▼ Show 20 Lines | bool is_valid_number(const char *s, bool trailing_stuff_ok, | ||||
| bool is_inf = false; | bool is_inf = false; | ||||
| if (no_trailing) | if (no_trailing) | ||||
| *no_trailing = false; | *no_trailing = false; | ||||
| while (isspace(*s)) | while (isspace(*s)) | ||||
| s++; | s++; | ||||
| /* | |||||
| * This test, while allowed by newer POSIX standards, represents a regression | |||||
| * where hex strings were treated as numbers in nawk the whole time it has been | |||||
| * in FreeBSD (since 2001). The POSIX 2001 through 2004 standards mandated this | |||||
| * behavior and the current standard allows it. Deviate from upstream by restoring | |||||
| * the prior FreeBSD behavior. | |||||
kevans: `prior` | |||||
| */ | |||||
| #if 0 | |||||
| // no hex floating point, sorry | // no hex floating point, sorry | ||||
| if (s[0] == '0' && tolower(s[1]) == 'x') | if (s[0] == '0' && tolower(s[1]) == 'x') | ||||
| return false; | return false; | ||||
| #endif | |||||
| // allow +nan, -nan, +inf, -inf, any other letter, no | // allow +nan, -nan, +inf, -inf, any other letter, no | ||||
| if (s[0] == '+' || s[0] == '-') { | if (s[0] == '+' || s[0] == '-') { | ||||
| is_nan = (strncasecmp(s+1, "nan", 3) == 0); | is_nan = (strncasecmp(s+1, "nan", 3) == 0); | ||||
| is_inf = (strncasecmp(s+1, "inf", 3) == 0); | is_inf = (strncasecmp(s+1, "inf", 3) == 0); | ||||
| if ((is_nan || is_inf) | if ((is_nan || is_inf) | ||||
| && (isspace(s[4]) || s[4] == '\0')) | && (isspace(s[4]) || s[4] == '\0')) | ||||
| goto convert; | goto convert; | ||||
| Show All 32 Lines | |||||
prior