Mercurial > hg > nginx
comparison src/core/ngx_string.c @ 1552:f045c67ab622
ngx_strnstr()
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 01 Oct 2007 14:48:33 +0000 |
| parents | d0bdd5f2276e |
| children | 25ee6eee7573 |
comparison
equal
deleted
inserted
replaced
| 1551:9ea31a2eab27 | 1552:f045c67ab622 |
|---|---|
| 501 | 501 |
| 502 return 0; | 502 return 0; |
| 503 } | 503 } |
| 504 | 504 |
| 505 | 505 |
| 506 u_char * | |
| 507 ngx_strnstr(u_char *s1, char *s2, size_t len) | |
| 508 { | |
| 509 u_char c1, c2; | |
| 510 size_t n; | |
| 511 | |
| 512 c2 = *(u_char *) s2++; | |
| 513 | |
| 514 n = ngx_strlen(s2); | |
| 515 | |
| 516 do { | |
| 517 do { | |
| 518 if (len-- == 0) { | |
| 519 return NULL; | |
| 520 } | |
| 521 | |
| 522 c1 = *s1++; | |
| 523 | |
| 524 if (c1 == 0) { | |
| 525 return NULL; | |
| 526 } | |
| 527 | |
| 528 } while (c1 != c2); | |
| 529 | |
| 530 if (n > len) { | |
| 531 return NULL; | |
| 532 } | |
| 533 | |
| 534 } while (ngx_strncmp(s1, (u_char *) s2, n) != 0); | |
| 535 | |
| 536 return --s1; | |
| 537 } | |
| 538 | |
| 539 | |
| 506 /* | 540 /* |
| 507 * ngx_strstrn() and ngx_strcasestrn() are intended to search for static | 541 * ngx_strstrn() and ngx_strcasestrn() are intended to search for static |
| 508 * substring with known length in null-terminated string. The argument n | 542 * substring with known length in null-terminated string. The argument n |
| 509 * must be length of the second substring - 1. | 543 * must be length of the second substring - 1. |
| 510 */ | 544 */ |