xref: /freebsd/lib/libc/stdio/fputws.c (revision a4e5e0106ac7145f56eb39a691e302cabb4635be)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2002-2004 Tim J. Robbins.
5  * All rights reserved.
6  *
7  * Copyright (c) 2011 The FreeBSD Foundation
8  *
9  * Portions of this software were developed by David Chisnall
10  * under sponsorship from the FreeBSD Foundation.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include "namespace.h"
35 #include <errno.h>
36 #include <limits.h>
37 #include <stdio.h>
38 #include <wchar.h>
39 #include "un-namespace.h"
40 #include "fvwrite.h"
41 #include "libc_private.h"
42 #include "local.h"
43 #include "mblocal.h"
44 
45 int
46 fputws_l(const wchar_t * __restrict ws, FILE * __restrict fp, locale_t locale)
47 {
48 	size_t nbytes;
49 	char buf[BUFSIZ];
50 	struct __suio uio;
51 	struct __siov iov;
52 	const wchar_t *wsp;
53 	FIX_LOCALE(locale);
54 	struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
55 	int ret;
56 
57 	ret = -1;
58 	FLOCKFILE_CANCELSAFE(fp);
59 	ORIENT(fp, 1);
60 	if (prepwrite(fp) != 0)
61 		goto end;
62 	uio.uio_iov = &iov;
63 	uio.uio_iovcnt = 1;
64 	iov.iov_base = buf;
65 	wsp = ws;
66 	do {
67 		nbytes = l->__wcsnrtombs(buf, &wsp, SIZE_T_MAX, sizeof(buf),
68 		    &fp->_mbstate);
69 		if (nbytes == (size_t)-1)
70 			goto end;
71 		uio.uio_resid = iov.iov_len = nbytes;
72 		if (__sfvwrite(fp, &uio) != 0)
73 			goto end;
74 	} while (wsp != NULL);
75 	ret = 0;
76 end:
77 	FUNLOCKFILE_CANCELSAFE();
78 	return (ret);
79 }
80 
81 int
82 fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
83 {
84 	return fputws_l(ws, fp, __get_locale());
85 }
86