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ngx_strstrn() and ngx_strcasestrn()

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This commit is contained in:
Igor Sysoev 2007-09-26 19:25:52 +00:00
parent 066e6323c5
commit 1bd987019d
2 changed files with 52 additions and 0 deletions
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49
src/core/ngx_string.c
View File

@ -503,6 +503,55 @@ ngx_strncasecmp(u_char *s1, u_char *s2, size_t n)
}
u_char *
ngx_strstrn(u_char *s1, char *s2, size_t n)
{
u_char c1, c2;
c2 = *(u_char *) s2++;
do {
do {
c1 = *s1++;
if (c1 == 0) {
return NULL;
}
} while (c1 != c2);
} while (ngx_strncmp(s1, (u_char *) s2, n) != 0);
return --s1;
}
u_char *
ngx_strcasestrn(u_char *s1, char *s2, size_t n)
{
ngx_uint_t c1, c2;
c2 = (ngx_uint_t) *s2++;
c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2;
do {
do {
c1 = (ngx_uint_t) *s1++;
if (c1 == 0) {
return NULL;
}
c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1;
} while (c1 != c2);
} while (ngx_strncasecmp(s1, (u_char *) s2, n) != 0);
return --s1;
}
ngx_int_t
ngx_rstrncmp(u_char *s1, u_char *s2, size_t n)
{

3
src/core/ngx_string.h
View File

@ -126,6 +126,9 @@ u_char *ngx_vsnprintf(u_char *buf, size_t max, const char *fmt, va_list args);
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_strstrn(u_char *s1, char *s2, size_t n);
u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n);
ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n);
ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n);
ngx_int_t ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2);