ngx_strcasecmp()/ngx_strncasecmp()
diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index e12edbd..fe8cfac 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -428,6 +428,68 @@
}
+/*
+ * 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)
{
