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/* Copy a null-terminated wide string to a fixed-size buffer.
Copyright (C) 2023-2024 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
<http://www.gnu.org/licenses/>. */
#include <wchar.h>
size_t
__wcslcpy (wchar_t *__restrict dest, const wchar_t *__restrict src, size_t size)
{
size_t src_length = __wcslen (src);
if (__glibc_unlikely (src_length >= size))
{
if (size > 0)
{
/* Copy the leading portion of the string. The last
character is subsequently overwritten with the null
terminator, but the destination size is usually a
multiple of a small power of two, so writing it twice
should be more efficient than copying an odd number of
character. */
__wmemcpy (dest, src, size);
dest[size - 1] = '\0';
}
}
else
/* Copy the string and its terminating null character. */
__wmemcpy (dest, src, src_length + 1);
return src_length;
}
libc_hidden_def (__wcslcpy)
weak_alias (__wcslcpy, wcslcpy)
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