Mercurial > hg > nginx
diff src/core/ngx_string.c @ 1615:ca6845b19113 stable-0.5
r1553, r1554 merge:
ngx_strnstr()
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 29 Oct 2007 15:10:31 +0000 |
parents | d72f8b48dd87 |
children | d2a12e9a34e8 |
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--- a/src/core/ngx_string.c +++ b/src/core/ngx_string.c @@ -503,6 +503,40 @@ ngx_strncasecmp(u_char *s1, u_char *s2, } +u_char * +ngx_strnstr(u_char *s1, char *s2, size_t len) +{ + u_char c1, c2; + size_t n; + + c2 = *(u_char *) s2++; + + n = ngx_strlen(s2); + + do { + do { + if (len-- == 0) { + return NULL; + } + + c1 = *s1++; + + if (c1 == 0) { + return NULL; + } + + } while (c1 != c2); + + if (n > len) { + return NULL; + } + + } while (ngx_strncmp(s1, (u_char *) s2, n) != 0); + + return --s1; +} + + /* * ngx_strstrn() and ngx_strcasestrn() are intended to search for static * substring with known length in null-terminated string. The argument n