1 /*
2 Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
3 This program and the accompanying materials are licensed and made available
4 under the terms and conditions of the BSD License that accompanies this
5 distribution. The full text of the license may be found at
6 http://opensource.org/licenses/bsd-license.
7
8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
10
11 * Copyright (c)2001 Citrus Project,
12 * All rights reserved.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $Citrus$
36
37 NetBSD: fwide.c,v 1.3 2005/06/12 05:21:27 lukem Exp
38 */
39 #include <LibConfig.h>
40 #include <sys/EfiCdefs.h>
41
42 #include <assert.h>
43 #include <errno.h>
44 #include <stdio.h>
45 #include <wchar.h>
46 #include "reentrant.h"
47 #include "local.h"
48
49 int
fwide(FILE * fp,int mode)50 fwide(FILE *fp, int mode)
51 {
52 struct wchar_io_data *wcio;
53
54 _DIAGASSERT(fp != NULL);
55 if(fp == NULL) {
56 errno = EINVAL;
57 return (0);
58 }
59
60 /*
61 * this implementation use only -1, 0, 1
62 * for mode value.
63 * (we don't need to do this, but
64 * this can make things simpler.)
65 */
66 if (mode > 0)
67 mode = 1;
68 else if (mode < 0)
69 mode = -1;
70
71 FLOCKFILE(fp);
72 wcio = WCIO_GET(fp);
73 if (!wcio)
74 return 0; /* XXX */
75
76 if (wcio->wcio_mode == 0 && mode != 0)
77 wcio->wcio_mode = mode;
78 else
79 mode = wcio->wcio_mode;
80 FUNLOCKFILE(fp);
81
82 return mode;
83 }
84