xref: /freebsd/lib/libc/stdio/fgetwc.c (revision e74101e4eff767325553039def89de70b70f36d3)
1e74101e4STim J. Robbins /*-
2e74101e4STim J. Robbins  * Copyright (c) 2002 Tim J. Robbins.
3e74101e4STim J. Robbins  * All rights reserved.
4e74101e4STim J. Robbins  *
5e74101e4STim J. Robbins  * Redistribution and use in source and binary forms, with or without
6e74101e4STim J. Robbins  * modification, are permitted provided that the following conditions
7e74101e4STim J. Robbins  * are met:
8e74101e4STim J. Robbins  * 1. Redistributions of source code must retain the above copyright
9e74101e4STim J. Robbins  *    notice, this list of conditions and the following disclaimer.
10e74101e4STim J. Robbins  * 2. Redistributions in binary form must reproduce the above copyright
11e74101e4STim J. Robbins  *    notice, this list of conditions and the following disclaimer in the
12e74101e4STim J. Robbins  *    documentation and/or other materials provided with the distribution.
13e74101e4STim J. Robbins  *
14e74101e4STim J. Robbins  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15e74101e4STim J. Robbins  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16e74101e4STim J. Robbins  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17e74101e4STim J. Robbins  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18e74101e4STim J. Robbins  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19e74101e4STim J. Robbins  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20e74101e4STim J. Robbins  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21e74101e4STim J. Robbins  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22e74101e4STim J. Robbins  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23e74101e4STim J. Robbins  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24e74101e4STim J. Robbins  * SUCH DAMAGE.
25e74101e4STim J. Robbins  */
26e74101e4STim J. Robbins 
27e74101e4STim J. Robbins #include <sys/cdefs.h>
28e74101e4STim J. Robbins __FBSDID("$FreeBSD$");
29e74101e4STim J. Robbins 
30e74101e4STim J. Robbins #include "namespace.h"
31e74101e4STim J. Robbins #include <errno.h>
32e74101e4STim J. Robbins #include <rune.h>
33e74101e4STim J. Robbins #include <stdio.h>
34e74101e4STim J. Robbins #include <wchar.h>
35e74101e4STim J. Robbins #include "un-namespace.h"
36e74101e4STim J. Robbins #include "libc_private.h"
37e74101e4STim J. Robbins #include "local.h"
38e74101e4STim J. Robbins 
39e74101e4STim J. Robbins wint_t
40e74101e4STim J. Robbins fgetwc(FILE *fp)
41e74101e4STim J. Robbins {
42e74101e4STim J. Robbins 	wint_t wc;
43e74101e4STim J. Robbins 	long r;
44e74101e4STim J. Robbins 
45e74101e4STim J. Robbins 	ORIENTLOCK(fp, 1);
46e74101e4STim J. Robbins 
47e74101e4STim J. Robbins 	if ((r = fgetrune(fp)) == _INVALID_RUNE) {
48e74101e4STim J. Robbins 		wc = WEOF;
49e74101e4STim J. Robbins 		errno = EILSEQ;
50e74101e4STim J. Robbins 	} else if (r == EOF)
51e74101e4STim J. Robbins 		wc = WEOF;
52e74101e4STim J. Robbins 	else
53e74101e4STim J. Robbins 		wc = (wint_t)r;
54e74101e4STim J. Robbins 
55e74101e4STim J. Robbins 	return (wc);
56e74101e4STim J. Robbins }
57