1*62f08720SJoerg Sonnenberger /* $NetBSD: fwide.c,v 1.3 2005/06/12 05:21:27 lukem Exp $ */
2*62f08720SJoerg Sonnenberger
3*62f08720SJoerg Sonnenberger /*-
4*62f08720SJoerg Sonnenberger * Copyright (c)2001 Citrus Project,
5*62f08720SJoerg Sonnenberger * All rights reserved.
6*62f08720SJoerg Sonnenberger *
7*62f08720SJoerg Sonnenberger * Redistribution and use in source and binary forms, with or without
8*62f08720SJoerg Sonnenberger * modification, are permitted provided that the following conditions
9*62f08720SJoerg Sonnenberger * are met:
10*62f08720SJoerg Sonnenberger * 1. Redistributions of source code must retain the above copyright
11*62f08720SJoerg Sonnenberger * notice, this list of conditions and the following disclaimer.
12*62f08720SJoerg Sonnenberger * 2. Redistributions in binary form must reproduce the above copyright
13*62f08720SJoerg Sonnenberger * notice, this list of conditions and the following disclaimer in the
14*62f08720SJoerg Sonnenberger * documentation and/or other materials provided with the distribution.
15*62f08720SJoerg Sonnenberger *
16*62f08720SJoerg Sonnenberger * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*62f08720SJoerg Sonnenberger * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*62f08720SJoerg Sonnenberger * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*62f08720SJoerg Sonnenberger * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*62f08720SJoerg Sonnenberger * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*62f08720SJoerg Sonnenberger * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*62f08720SJoerg Sonnenberger * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*62f08720SJoerg Sonnenberger * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*62f08720SJoerg Sonnenberger * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*62f08720SJoerg Sonnenberger * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*62f08720SJoerg Sonnenberger * SUCH DAMAGE.
27*62f08720SJoerg Sonnenberger *
28*62f08720SJoerg Sonnenberger * $Citrus$
29*62f08720SJoerg Sonnenberger */
30*62f08720SJoerg Sonnenberger
31*62f08720SJoerg Sonnenberger #include "namespace.h"
32*62f08720SJoerg Sonnenberger #include <assert.h>
33*62f08720SJoerg Sonnenberger #include <stdio.h>
34*62f08720SJoerg Sonnenberger #include <wchar.h>
35*62f08720SJoerg Sonnenberger #include "un-namespace.h"
36*62f08720SJoerg Sonnenberger
37*62f08720SJoerg Sonnenberger #include "libc_private.h"
38*62f08720SJoerg Sonnenberger #include "local.h"
39*62f08720SJoerg Sonnenberger
40*62f08720SJoerg Sonnenberger int
fwide(FILE * fp,int mode)41*62f08720SJoerg Sonnenberger fwide(FILE *fp, int mode)
42*62f08720SJoerg Sonnenberger {
43*62f08720SJoerg Sonnenberger struct wchar_io_data *wcio;
44*62f08720SJoerg Sonnenberger
45*62f08720SJoerg Sonnenberger _DIAGASSERT(fp != NULL);
46*62f08720SJoerg Sonnenberger
47*62f08720SJoerg Sonnenberger /*
48*62f08720SJoerg Sonnenberger * this implementation use only -1, 0, 1
49*62f08720SJoerg Sonnenberger * for mode value.
50*62f08720SJoerg Sonnenberger * (we don't need to do this, but
51*62f08720SJoerg Sonnenberger * this can make things simpler.)
52*62f08720SJoerg Sonnenberger */
53*62f08720SJoerg Sonnenberger if (mode > 0)
54*62f08720SJoerg Sonnenberger mode = 1;
55*62f08720SJoerg Sonnenberger else if (mode < 0)
56*62f08720SJoerg Sonnenberger mode = -1;
57*62f08720SJoerg Sonnenberger
58*62f08720SJoerg Sonnenberger FLOCKFILE(fp);
59*62f08720SJoerg Sonnenberger wcio = WCIO_GET(fp);
60*62f08720SJoerg Sonnenberger if (!wcio)
61*62f08720SJoerg Sonnenberger return 0; /* XXX */
62*62f08720SJoerg Sonnenberger
63*62f08720SJoerg Sonnenberger if (wcio->wcio_mode == 0 && mode != 0)
64*62f08720SJoerg Sonnenberger wcio->wcio_mode = mode;
65*62f08720SJoerg Sonnenberger else
66*62f08720SJoerg Sonnenberger mode = wcio->wcio_mode;
67*62f08720SJoerg Sonnenberger FUNLOCKFILE(fp);
68*62f08720SJoerg Sonnenberger
69*62f08720SJoerg Sonnenberger return mode;
70*62f08720SJoerg Sonnenberger }
71