xref: /freebsd/lib/libc/stdio/fputws.c (revision 4f29da19bd44f0e99f021510460a81bf754c21d2)
1 /*-
2  * Copyright (c) 2002-2004 Tim J. Robbins.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include "namespace.h"
31 #include <errno.h>
32 #include <limits.h>
33 #include <stdio.h>
34 #include <wchar.h>
35 #include "un-namespace.h"
36 #include "fvwrite.h"
37 #include "libc_private.h"
38 #include "local.h"
39 #include "mblocal.h"
40 
41 int
42 fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
43 {
44 	size_t nbytes;
45 	char buf[BUFSIZ];
46 	struct __suio uio;
47 	struct __siov iov;
48 
49 	FLOCKFILE(fp);
50 	ORIENT(fp, 1);
51 	if (prepwrite(fp) != 0)
52 		goto error;
53 	uio.uio_iov = &iov;
54 	uio.uio_iovcnt = 1;
55 	iov.iov_base = buf;
56 	do {
57 		nbytes = __wcsnrtombs(buf, &ws, SIZE_T_MAX, sizeof(buf),
58 		    &fp->_extra->mbstate);
59 		if (nbytes == (size_t)-1)
60 			goto error;
61 		iov.iov_len = uio.uio_resid = nbytes;
62 		if (__sfvwrite(fp, &uio) != 0)
63 			goto error;
64 	} while (ws != NULL);
65 	FUNLOCKFILE(fp);
66 	return (0);
67 
68 error:
69 	FUNLOCKFILE(fp);
70 	return (-1);
71 }
72