xref: /freebsd/lib/libc/stdio/fputws.c (revision 177628ce757cf1a3f7d4b9a70dc4682d22e50ebc)
1 /*-
2  * Copyright (c) 2002-2004 Tim J. Robbins.
3  * All rights reserved.
4  *
5  * Copyright (c) 2011 The FreeBSD Foundation
6  * All rights reserved.
7  * Portions of this software were developed by David Chisnall
8  * under sponsorship from the FreeBSD Foundation.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 #include "namespace.h"
36 #include <errno.h>
37 #include <limits.h>
38 #include <stdio.h>
39 #include <wchar.h>
40 #include "un-namespace.h"
41 #include "fvwrite.h"
42 #include "libc_private.h"
43 #include "local.h"
44 #include "mblocal.h"
45 
46 int
47 fputws_l(const wchar_t * __restrict ws, FILE * __restrict fp, locale_t locale)
48 {
49 	size_t nbytes;
50 	char buf[BUFSIZ];
51 	struct __suio uio;
52 	struct __siov iov;
53 	const wchar_t *wsp;
54 	FIX_LOCALE(locale);
55 	struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
56 
57 	FLOCKFILE(fp);
58 	ORIENT(fp, 1);
59 	if (prepwrite(fp) != 0)
60 		goto error;
61 	uio.uio_iov = &iov;
62 	uio.uio_iovcnt = 1;
63 	iov.iov_base = buf;
64 	do {
65 		wsp = ws;
66 		nbytes = l->__wcsnrtombs(buf, &wsp, SIZE_T_MAX, sizeof(buf),
67 		    &fp->_mbstate);
68 		if (nbytes == (size_t)-1)
69 			goto error;
70 		iov.iov_len = uio.uio_resid = nbytes;
71 		if (__sfvwrite(fp, &uio) != 0)
72 			goto error;
73 	} while (wsp != NULL);
74 	FUNLOCKFILE(fp);
75 	return (0);
76 
77 error:
78 	FUNLOCKFILE(fp);
79 	return (-1);
80 }
81 
82 int
83 fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
84 {
85 	return fputws_l(ws, fp, __get_locale());
86 }
87