From 64c52b2089e92fc3179c19af26fe80f4f8e4bcb6 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Nov 25 2017 16:30:32 +0000
Subject: added u16_wcsspn().


---

diff --git a/project/common.mk b/project/common.mk
index 3115329..10eb3bf 100644
--- a/project/common.mk
+++ b/project/common.mk
@@ -5,6 +5,7 @@ API_SRCS = \
 	src/u16_wcstombs.c \
 	src/u16_wcslen.c \
 	src/u16_wcsnlen.c \
+	src/u16_wcsspn.c \
 
 INTERNAL_SRCS = \
 
diff --git a/src/u16_wcsspn.c b/src/u16_wcsspn.c
new file mode 100644
index 0000000..7ba690e
--- /dev/null
+++ b/src/u16_wcsspn.c
@@ -0,0 +1,22 @@
+/*******************************************************************/
+/*  u16ports: u16 variants of wide character string functions.     */
+/*  Copyright (C) 2017  Z. Gilboa                                  */
+/*  Released under the Standard MIT License; see COPYING.U16PORTS. */
+/*******************************************************************/
+
+#include <stdint.h>
+#include <u16ports/u16ports.h>
+
+size_t u16_wcsspn(const uint16_t * wstr, const uint16_t * cstr)
+{
+	const uint16_t * wch;
+	const uint16_t * wcs;
+
+        for (wcs=wstr; *wcs; wcs++)
+		for (wch=cstr; *wch!=*wcs; wch++)
+			if (!*wch)
+				return wcs - wstr;
+
+
+        return wcs - wstr;
+}