1/*	$OpenBSD: fputwc.c,v 1.4 2009/11/09 00:18:27 kurt 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	/* LINTED we don't play with buf */
50	iov.iov_base = (void *)buf;
51	uio.uio_iov = &iov;
52	uio.uio_iovcnt = 1;
53
54	_SET_ORIENTATION(fp, 1);
55	wcio = WCIO_GET(fp);
56	if (wcio == 0) {
57		errno = ENOMEM;
58		return WEOF;
59	}
60
61	wcio->wcio_ungetwc_inbuf = 0;
62	st = &wcio->wcio_mbstate_out;
63
64	size = wcrtomb(buf, wc, st);
65	if (size == (size_t)-1) {
66		errno = EILSEQ;
67		return WEOF;
68	}
69
70	uio.uio_resid = iov.iov_len = size;
71	if (__sfvwrite(fp, &uio)) {
72		return WEOF;
73	}
74
75	return (wint_t)wc;
76}
77
78wint_t
79fputwc(wchar_t wc, FILE *fp)
80{
81	wint_t r;
82
83	FLOCKFILE(fp);
84	r = __fputwc_unlock(wc, fp);
85	FUNLOCKFILE(fp);
86
87	return (r);
88}
89