Zebediah Figura : ntdll: Implement wcsnlen().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: a524ab500434df3b9c4c5b10010b0f6fe571e859
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=a524ab500434df3b9c4c5b100...

Author: Zebediah Figura <zfigura(a)codeweavers.com>
Date:   Sat Jan 29 20:39:55 2022 -0600

ntdll: Implement wcsnlen().

Signed-off-by: Zebediah Figura <zfigura(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/ntdll/ntdll.spec |  1 +
 dlls/ntdll/wcstring.c | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/dlls/ntdll/ntdll.spec b/dlls/ntdll/ntdll.spec
index bd8e1f5efe6..afb945d4665 100644
--- a/dlls/ntdll/ntdll.spec
+++ b/dlls/ntdll/ntdll.spec
@@ -1609,6 +1609,7 @@
 @ cdecl wcsncat(wstr wstr long)
 @ cdecl wcsncmp(wstr wstr long)
 @ cdecl wcsncpy(ptr wstr long)
+@ cdecl wcsnlen(ptr long)
 @ cdecl wcspbrk(wstr wstr)
 @ cdecl wcsrchr(wstr long)
 @ cdecl wcsspn(wstr wstr)
diff --git a/dlls/ntdll/wcstring.c b/dlls/ntdll/wcstring.c
index a727e4defac..9422e4f676c 100644
--- a/dlls/ntdll/wcstring.c
+++ b/dlls/ntdll/wcstring.c
@@ -251,6 +251,17 @@ LPWSTR __cdecl wcsncpy( LPWSTR s1, LPCWSTR s2, size_t n )
 }
 
 
+/*********************************************************************
+ *           wcsnlen    (NTDLL.@)
+ */
+size_t __cdecl wcsnlen( const WCHAR *str, size_t len )
+{
+    const WCHAR *s = str;
+    for (s = str; len && *s; s++, len--) ;
+    return s - str;
+}
+
+
 /*********************************************************************
  *           wcspbrk    (NTDLL.@)
  */