1 /* Copyright (C) 1995-2022 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 #ifndef WCSNCAT
21 # define WCSNCAT wcsncat
22 #endif
23
24 /* Append no more than N wide-character of SRC onto DEST. */
25 wchar_t *
WCSNCAT(wchar_t * dest,const wchar_t * src,size_t n)26 WCSNCAT (wchar_t *dest, const wchar_t *src, size_t n)
27 {
28 wchar_t *ret = dest;
29
30 /* Find the end of dest. */
31 dest += __wcslen (dest);
32
33 size_t ds = __wcsnlen (src, n);
34
35 dest[ds] = L'\0';
36 __wmemcpy (dest, src, ds);
37
38 return ret;
39 }
40