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67efbf45 | 1 | /* Binary mode I/O. |
219d1afa | 2 | Copyright (C) 2001-2018 Free Software Foundation, Inc. |
67efbf45 AM |
3 | |
4 | This program is free software: you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
16 | ||
17 | #ifndef _BINARY_H | |
18 | #define _BINARY_H | |
19 | ||
20 | /* Include this header after <fcntl.h> and <stdio.h>, because | |
21 | systems that distinguish between text and binary I/O usually | |
22 | define O_BINARY in <fcntl.h>, and the MSVC7 <stdio.h> doesn't | |
23 | like to be included after '#define fileno ...' | |
24 | ||
25 | We don't include <fcntl.h> here because not all systems have | |
26 | that header. */ | |
27 | ||
28 | #if !defined O_BINARY && defined _O_BINARY | |
29 | /* For MSC-compatible compilers. */ | |
30 | # define O_BINARY _O_BINARY | |
31 | # define O_TEXT _O_TEXT | |
32 | #endif | |
33 | #ifdef __BEOS__ | |
34 | /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */ | |
35 | # undef O_BINARY | |
36 | # undef O_TEXT | |
37 | #endif | |
38 | #if O_BINARY | |
39 | # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ | |
40 | # include <io.h> /* declares setmode() */ | |
41 | # else | |
42 | # define setmode _setmode | |
43 | # undef fileno | |
44 | # define fileno _fileno | |
45 | # endif | |
46 | # ifdef __DJGPP__ | |
47 | # include <unistd.h> /* declares isatty() */ | |
48 | # /* Avoid putting stdin/stdout in binary mode if it is connected to the | |
49 | # console, because that would make it impossible for the user to | |
50 | # interrupt the program through Ctrl-C or Ctrl-Break. */ | |
51 | # define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0) | |
52 | # else | |
53 | # define SET_BINARY(fd) setmode (fd, O_BINARY) | |
54 | # endif | |
55 | #else | |
56 | /* On reasonable systems, binary I/O is the default. */ | |
57 | # undef O_BINARY | |
58 | # define O_BINARY 0 | |
59 | # define SET_BINARY(fd) /* nothing */ | |
60 | #endif | |
61 | ||
62 | #endif /* _BINARY_H */ |