From 4b1c0220d324d6c907963ef904f9e6ff84388c21 Mon Sep 17 00:00:00 2001
From: guoshichao <guoshichao@xiaomi.com>
Date: Sat, 19 Aug 2023 11:14:52 +0800
Subject: [PATCH] libs/libc/wchar: add wcscpy implementation

Signed-off-by: guoshichao <guoshichao@xiaomi.com>
---
 libs/libc/wchar/Make.defs    |  2 +-
 libs/libc/wchar/lib_wcscpy.c | 57 ++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+), 1 deletion(-)
 create mode 100644 libs/libc/wchar/lib_wcscpy.c

diff --git a/libs/libc/wchar/Make.defs b/libs/libc/wchar/Make.defs
index ece1358b87..81ee284c5a 100644
--- a/libs/libc/wchar/Make.defs
+++ b/libs/libc/wchar/Make.defs
@@ -26,7 +26,7 @@ CSRCS += lib_wcslcpy.c lib_wcsxfrm.c lib_wcrtomb.c lib_wcsftime.c
 CSRCS += lib_wcscoll.c lib_wcstol.c lib_wcstoll.c lib_wcstoul.c
 CSRCS += lib_wcstoull.c lib_wcstold.c lib_wcstof.c lib_wcstod.c
 CSRCS += lib_swprintf.c lib_mbsnrtowcs.c lib_wcsnrtombs.c lib_mbsinit.c
-CSRCS += lib_mbrlen.c lib_mbsrtowcs.c lib_wcsrtombs.c
+CSRCS += lib_mbrlen.c lib_mbsrtowcs.c lib_wcsrtombs.c lib_wcscpy.c
 
 # Add the wchar directory to the build
 
diff --git a/libs/libc/wchar/lib_wcscpy.c b/libs/libc/wchar/lib_wcscpy.c
new file mode 100644
index 0000000000..694140c31b
--- /dev/null
+++ b/libs/libc/wchar/lib_wcscpy.c
@@ -0,0 +1,57 @@
+/****************************************************************************
+ * libs/libc/wchar/lib_wcscpy.c
+ *
+ * Copyright © 2005-2014 Rich Felker, et al.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <wchar.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name:  wcscpy
+ *
+ * Description:
+ *    To copy the source wchar string to dest wchar string
+ *
+ * Input Parameters:
+ *   d - the dest wchar string that need to copy to
+ *   s - the source wchar string that we need to copy
+ *
+ * Returned Value:
+ *   The pointer point to the begin of the dest wchar string
+ *
+ ****************************************************************************/
+
+FAR wchar_t *wcscpy(FAR wchar_t *d, FAR const wchar_t *s)
+{
+  FAR wchar_t *a = d;
+  while ((*d++ = *s++));
+  return a;
+}