glibc/wcsmbs/wcsncat.c

40 lines
1.1 KiB
C

/* Copyright (C) 1995-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <wchar.h>
#ifndef WCSNCAT
# define WCSNCAT wcsncat
#endif
/* Append no more than N wide-character of SRC onto DEST. */
wchar_t *
WCSNCAT (wchar_t *dest, const wchar_t *src, size_t n)
{
wchar_t *ret = dest;
/* Find the end of dest. */
dest += __wcslen (dest);
size_t ds = __wcsnlen (src, n);
dest[ds] = L'\0';
__wmemcpy (dest, src, ds);
return ret;
}