xref: /illumos-gate/usr/src/lib/libc/port/locale/fputws.c (revision 45ede40b2394db7967e59f19288fae9b62efd4aa)
1 /*
2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
3  * Use is subject to license terms.
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 #include "lint.h"
27 #include "mse_int.h"
28 #include "file64.h"
29 #include "mtlib.h"
30 #include <errno.h>
31 #include <limits.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <wchar.h>
35 #include "mblocal.h"
36 #include "stdiom.h"
37 
38 static int
39 _fputws_impl(const wchar_t *_RESTRICT_KYWD ws, FILE *_RESTRICT_KYWD fp,
40     int orient)
41 {
42 	int nchars;
43 	int nwritten;
44 	char buf[BUFSIZ];
45 	rmutex_t *lk;
46 
47 	/*
48 	 * The FreeBSD implementation here was a bit more complex, because
49 	 * it repeated much of what is in fputs.  For simplicity's sake, we
50 	 * juse wctomb to convert the wide string to a mbs, and then use
51 	 * fputs to print the mbs.
52 	 */
53 
54 	nchars = wcslen(ws);
55 	nwritten = 0;
56 
57 	FLOCKFILE(lk, fp);
58 	if (orient && GET_NO_MODE(fp))
59 		_setorientation(fp, _WC_MODE);
60 
61 	while (nchars > 0) {
62 		int nbytes = 0;
63 		char *ptr = buf;
64 		while ((nbytes < (BUFSIZ - (MB_LEN_MAX * 2))) && nchars) {
65 			int n;
66 			if ((n = wctomb(ptr, *ws)) < 0) {
67 				FUNLOCKFILE(lk);
68 				fp->_flag |= _IOERR;
69 				errno = EILSEQ;
70 				return (EOF);
71 			}
72 			ws++;
73 			ptr += n;
74 			nbytes += n;
75 			nchars--;
76 		}
77 		*ptr = '\0';
78 		if (fputs(buf, fp) < nbytes) {
79 			FUNLOCKFILE(lk);
80 			return (EOF);
81 		}
82 		nwritten += nbytes;
83 	}
84 	FUNLOCKFILE(lk);
85 	return (nwritten);
86 }
87 
88 int
89 fputws(const wchar_t *_RESTRICT_KYWD ws, FILE *_RESTRICT_KYWD fp)
90 {
91 	return (_fputws_impl(ws, fp, 0));
92 }
93 
94 int
95 __fputws_xpg5(const wchar_t *ws, FILE *fp)
96 {
97 	return (_fputws_impl(ws, fp, 1));
98 }
99