1 /* Copyright (C) 1996-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <wchar.h>
19
20 #ifdef WCPNCPY
21 # define __wcpncpy WCPNCPY
22 #endif
23
24 /* Copy no more than N wide-characters of SRC to DEST, returning the
25 address of the last character written into DEST. */
26 wchar_t *
__wcpncpy(wchar_t * dest,const wchar_t * src,size_t n)27 __wcpncpy (wchar_t *dest, const wchar_t *src, size_t n)
28 {
29 size_t size = __wcsnlen (src, n);
30 __wmemcpy (dest, src, size);
31 dest += size;
32 if (size == n)
33 return dest;
34 return wmemset (dest, L'\0', (n - size));
35 }
36
37 #ifndef WCPNCPY
38 weak_alias (__wcpncpy, wcpncpy)
39 #endif
40