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1 | /* Copyright (C) 1999, 2000 Free Software Foundation, Inc. |
2 | This file is part of the GNU IO Library. | |
3 | ||
4 | This library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU General Public License as | |
6 | published by the Free Software Foundation; either version 2, or (at | |
7 | your option) any later version. | |
8 | ||
9 | This library is distributed in the hope that it will be useful, but | |
10 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this library; see the file COPYING. If not, write to | |
16 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, | |
17 | MA 02111-1307, USA. | |
18 | ||
19 | As a special exception, if you link this library with files | |
20 | compiled with a GNU compiler to produce an executable, this does | |
21 | not cause the resulting executable to be covered by the GNU General | |
22 | Public License. This exception does not however invalidate any | |
23 | other reasons why the executable file might be covered by the GNU | |
24 | General Public License. */ | |
25 | ||
26 | #include <libioP.h> | |
27 | #include <stdio.h> | |
28 | ||
29 | int | |
30 | fwide (fp, mode) | |
31 | _IO_FILE *fp; | |
32 | int mode; | |
33 | { | |
34 | int result; | |
35 | ||
36 | /* Normalize the value. */ | |
37 | mode = mode < 0 ? -1 : (mode == 0 ? 0 : 1); | |
38 | ||
39 | if (mode == 0 || fp->_mode != 0) | |
40 | /* The caller simply wants to know about the current orientation | |
41 | or the orientation already has been determined. */ | |
42 | return fp->_mode; | |
43 | ||
44 | _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp); | |
45 | _IO_flockfile (fp); | |
46 | ||
47 | result = _IO_fwide (fp, mode); | |
48 | ||
49 | _IO_funlockfile (fp); | |
50 | _IO_cleanup_region_end (0); | |
51 | ||
52 | return result; | |
53 | } |