From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/string/wcscspn.c | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/string/wcscspn.c

(limited to 'src/string/wcscspn.c')

diff --git a/src/string/wcscspn.c b/src/string/wcscspn.c
new file mode 100644
index 0000000..c4e5272
--- /dev/null
+++ b/src/string/wcscspn.c
@@ -0,0 +1,10 @@
+#include <wchar.h>
+
+size_t wcscspn(const wchar_t *s, const wchar_t *c)
+{
+	const wchar_t *a;
+	if (!c[0]) return wcslen(s);
+	if (!c[1]) return (s=wcschr(a=s, *c)) ? s-a : wcslen(a);
+	for (a=s; *s && !wcschr(c, *s); s++);
+	return s-a;
+}
-- 
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