1/* Copyright (C) 1991-2021 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 <stdlib.h>
19#include <string.h>
20#include <wchar.h>
21
22
23/* Convert the `wchar_t' string in PWCS to a multibyte character string
24 in S, writing no more than N characters. Return the number of bytes
25 written, or (size_t) -1 if an invalid `wchar_t' was found. */
26size_t
27wcstombs (char *s, const wchar_t *pwcs, size_t n)
28{
29 mbstate_t state;
30
31 memset (&state, '\0', sizeof state);
32
33 /* Return how many we wrote (or maybe an error). */
34 return __wcsrtombs (s, &pwcs, n, &state);
35}
36