Add wcsdup(), from NetBSD.

ok deraadt matthew

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/libc/string/wcsdup.c b/lib/libc/string/wcsdup.c
new file mode 100644
index 00000000000..57a328a8c2b
--- /dev/null
+++ b/lib/libc/string/wcsdup.c
@@ -0,0 +1,31 @@
+/*	$OpenBSD: wcsdup.c,v 1.1 2011/07/04 04:37:34 nicm Exp $	*/
+/*	$NetBSD: wcsdup.c,v 1.3 2008/05/26 13:17:48 haad Exp $	*/
+
+/*
+ * Copyright (C) 2006 Aleksey Cheusov
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee. Permission to modify the code and to distribute modified
+ * code is also granted without any restrictions.
+ */
+
+#include <stdlib.h>
+#include <wchar.h>
+
+wchar_t *
+wcsdup(const wchar_t *str)
+{
+	wchar_t *copy;
+	size_t len;
+
+	len = wcslen(str) + 1;
+	copy = malloc(len * sizeof (wchar_t));
+
+	if (!copy)
+		return (NULL);
+
+	return (wmemcpy(copy, str, len));
+}