Merge branch 'unstable' of github.com:antirez/redis-private into unstable

[redis.git] / src / dict.c

diff --git a/src/dict.c b/src/dict.c
index a1060d456ae7669246deeacdb05a6941d8a58853..9be7fb168ed00b8b633e06a47b0b74c87e6a70fd 100644 (file)
--- a/src/dict.c
+++ b/src/dict.c
@@ -42,6 +42,7 @@
 #include <assert.h>
 #include <limits.h>
 #include <sys/time.h>
+#include <ctype.h>
 
 #include "dict.h"
 #include "zmalloc.h"
@@ -94,6 +95,15 @@ unsigned int dictGenHashFunction(const unsigned char *buf, int len) {
     return hash;
 }
 
+/* And a case insensitive version */
+unsigned int dictGenCaseHashFunction(const unsigned char *buf, int len) {
+    unsigned int hash = 5381;
+
+    while (len--)
+        hash = ((hash << 5) + hash) + (tolower(*buf++)); /* hash * 33 + c */
+    return hash;
+}
+
 /* ----------------------------- API implementation ------------------------- */
 
 /* Reset an hashtable already initialized with ht_init().