This is the 1.6.0 version of revision 156883 of trunk.

This is different in that it preserves the case-sensitiveness
of processing queues from configuration.

closes issue #13703



git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@156889 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 19 insertions, 0 deletions

diff --git a/include/asterisk/strings.h b/include/asterisk/strings.h
index 79dac8700..4f5e326cf 100644
--- a/include/asterisk/strings.h
+++ b/include/asterisk/strings.h
@@ -23,6 +23,8 @@
 #ifndef _ASTERISK_STRINGS_H
 #define _ASTERISK_STRINGS_H
 
+#include <ctype.h>
+
 #include "asterisk/inline_api.h"
 #include "asterisk/utils.h"
 #include "asterisk/threadstorage.h"
@@ -702,4 +704,21 @@ static force_inline int ast_str_hash(const char *str)
 	return abs(hash);
 }
 
+/*!
+ * \brief Compute a hash value on a case-insensitive string
+ *
+ * Uses the same hash algorithm as ast_str_hash, but converts
+ * all characters to lowercase prior to computing a hash. This
+ * allows for easy case-insensitive lookups in a hash table.
+ */
+static force_inline int ast_str_case_hash(const char *str)
+{
+	int hash = 5381;
+
+	while (*str) {
+		hash = hash * 33 ^ tolower(*str++);
+	}
+
+	return abs(hash);
+}
 #endif /* _ASTERISK_STRINGS_H */