xref: /freebsd/lib/libc/stdio/fputws.c (revision 2f2c1839f8d6025a050277b9abf31a330100c06d)
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 <stdio.h>
33 #include <wchar.h>
34 #include "un-namespace.h"
35 #include "fvwrite.h"
36 #include "libc_private.h"
37 #include "local.h"
38 #include "mblocal.h"
39 
40 int
41 fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
42 {
43 	size_t nbytes;
44 	char buf[BUFSIZ];
45 	struct __suio uio;
46 	struct __siov iov;
47 
48 	FLOCKFILE(fp);
49 	ORIENT(fp, 1);
50 	if (prepwrite(fp) != 0)
51 		goto error;
52 	uio.uio_iov = &iov;
53 	uio.uio_iovcnt = 1;
54 	iov.iov_base = buf;
55 	do {
56 		nbytes = __wcsrtombs(buf, &ws, sizeof(buf),
57 		    &fp->_extra->mbstate);
58 		if (nbytes == (size_t)-1)
59 			goto error;
60 		iov.iov_len = uio.uio_resid = nbytes;
61 		if (__sfvwrite(fp, &uio) != 0)
62 			goto error;
63 	} while (ws != NULL);
64 	FUNLOCKFILE(fp);
65 	return (0);
66 
67 error:
68 	FUNLOCKFILE(fp);
69 	return (-1);
70 }
71