nginx: src/core/ngx_string.c comparison

ngx_strcasecmp()/ngx_strncasecmp()

comparison

equal deleted inserted replaced

-:2c7fed12fab7
+:db7c468c447d
 return buf;
 }
+/*
+* 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)
 {
 if (n == 0) {
 return 0;

Mercurial > hg > nginx