Mercurial > hg > nginx-quic
changeset 1552:f045c67ab622
ngx_strnstr()
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 01 Oct 2007 14:48:33 +0000 |
parents | 9ea31a2eab27 |
children | e3134867a810 |
files | src/core/ngx_string.c src/core/ngx_string.h |
diffstat | 2 files changed, 36 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- 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
--- a/src/core/ngx_string.h +++ b/src/core/ngx_string.h @@ -126,6 +126,8 @@ u_char *ngx_vsnprintf(u_char *buf, size_ ngx_int_t ngx_strcasecmp(u_char *s1, u_char *s2); ngx_int_t ngx_strncasecmp(u_char *s1, u_char *s2, size_t n); +u_char *ngx_strnstr(u_char *s1, char *s2, size_t n); + u_char *ngx_strstrn(u_char *s1, char *s2, size_t n); u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n);