1/*	$OpenBSD: fputwc.c,v 1.7 2016/01/26 13:57:02 schwarze Exp $	*/
2/* $NetBSD: fputwc.c,v 1.3 2003/03/07 07:11:37 tshiozak Exp $ */
3
4/*-
5 * Copyright (c)2001 Citrus Project,
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $Citrus$
30 */
31
32#include <errno.h>
33#include <limits.h>
34#include <stdio.h>
35#include <wchar.h>
36#include "local.h"
37#include "fvwrite.h"
38
39wint_t
40__fputwc_unlock(wchar_t wc, FILE *fp)
41{
42	struct wchar_io_data *wcio;
43	mbstate_t *st;
44	size_t size;
45	char buf[MB_LEN_MAX];
46	struct __suio uio;
47	struct __siov iov;
48
49	iov.iov_base = buf;
50	uio.uio_iov = &iov;
51	uio.uio_iovcnt = 1;
52
53	_SET_ORIENTATION(fp, 1);
54	wcio = WCIO_GET(fp);
55	if (wcio == 0) {
56		errno = ENOMEM;
57		return WEOF;
58	}
59
60	wcio->wcio_ungetwc_inbuf = 0;
61	st = &wcio->wcio_mbstate_out;
62
63	size = wcrtomb(buf, wc, st);
64	if (size == (size_t)-1) {
65		fp->_flags |= __SERR;
66		return WEOF;
67	}
68
69	uio.uio_resid = iov.iov_len = size;
70	if (__sfvwrite(fp, &uio)) {
71		return WEOF;
72	}
73
74	return (wint_t)wc;
75}
76
77wint_t
78fputwc(wchar_t wc, FILE *fp)
79{
80	wint_t r;
81
82	FLOCKFILE(fp);
83	r = __fputwc_unlock(wc, fp);
84	FUNLOCKFILE(fp);
85
86	return (r);
87}
88DEF_STRONG(fputwc);
89