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-rw-r--r--src/pal/src/safecrt/wcslen_s.cpp58
1 files changed, 58 insertions, 0 deletions
diff --git a/src/pal/src/safecrt/wcslen_s.cpp b/src/pal/src/safecrt/wcslen_s.cpp
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+++ b/src/pal/src/safecrt/wcslen_s.cpp
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/***
+*wcslen_s.c - contains wcsnlen() routine
+*
+
+*
+*Purpose:
+* wcslen returns the length of a null-terminated wide-character string,
+* not including the null wchar_t itself.
+*
+*******************************************************************************/
+
+
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include "internal_securecrt.h"
+
+#include "mbusafecrt_internal.h"
+
+/***
+*wcsnlen - return the length of a null-terminated wide-character string
+*
+*Purpose:
+* Finds the length in bytes of the given string, not including
+* the final null character. Only the first maxsize characters
+* are inspected: if the null character is not found, maxsize is
+* returned.
+*
+*Entry:
+* const wchar_t * wcs - string whose length is to be computed
+* size_t maxsize
+*
+*Exit:
+* Length of the string "wcs", exclusive of the final null byte, or
+* maxsize if the null character is not found.
+*
+*Exceptions:
+*
+*******************************************************************************/
+
+size_t __cdecl wcsnlen(const wchar_t *wcs, size_t maxsize)
+{
+ size_t n;
+
+ /* Note that we do not check if s == NULL, because we do not
+ * return errno_t...
+ */
+
+ for (n = 0; n < maxsize && *wcs; n++, wcs++)
+ ;
+
+ return n;
+}
+