Mercurial > hg > nginx
diff src/core/ngx_string.c @ 1107:db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 14 Feb 2007 18:51:19 +0000 |
parents | ce08bc4cb97b |
children | 5eae5751507f |
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--- a/src/core/ngx_string.c +++ b/src/core/ngx_string.c @@ -428,6 +428,68 @@ ngx_vsnprintf(u_char *buf, size_t max, c } +/* + * We use ngx_strcasecmp()/ngx_strncasecmp() for 7-bit ASCII string only, + * and implement our own ngx_strcasecmp()/ngx_strncasecmp() + * to avoid libc locale overhead. Besides, we use the ngx_uint_t's + * instead of the u_char's, because they are slightly faster. + */ + +ngx_int_t +ngx_strcasecmp(u_char *s1, u_char *s2) +{ + ngx_uint_t c1, c2; + + for ( ;; ) { + c1 = (ngx_uint_t) *s1++; + c2 = (ngx_uint_t) *s2++; + + c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1; + c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2; + + if (c1 == c2) { + + if (c1) { + continue; + } + + return 0; + } + + return c1 - c2; + } +} + + +ngx_int_t +ngx_strncasecmp(u_char *s1, u_char *s2, size_t n) +{ + ngx_uint_t c1, c2; + + while (n) { + c1 = (ngx_uint_t) *s1++; + c2 = (ngx_uint_t) *s2++; + + c1 = (c1 >= 'A' && c1 <= 'Z') ? (c1 | 0x20) : c1; + c2 = (c2 >= 'A' && c2 <= 'Z') ? (c2 | 0x20) : c2; + + if (c1 == c2) { + + if (c1) { + n--; + continue; + } + + return 0; + } + + return c1 - c2; + } + + return 0; +} + + ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n) {