| 1 | /* Binary mode I/O. |
| 2 | Copyright (C) 2001, 2003, 2005, 2008-2012 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software: you can redistribute it and/or modify |
| 5 | it under the terms of the GNU Lesser 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 Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser 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 | /* For systems that distinguish between text and binary I/O. |
| 21 | O_BINARY is guaranteed by the gnulib <fcntl.h>. */ |
| 22 | #include <fcntl.h> |
| 23 | |
| 24 | /* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...', |
| 25 | so we include it here first. */ |
| 26 | #include <stdio.h> |
| 27 | |
| 28 | /* SET_BINARY (fd); |
| 29 | changes the file descriptor fd to perform binary I/O. */ |
| 30 | #if O_BINARY |
| 31 | # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ |
| 32 | # include <io.h> /* declares setmode() */ |
| 33 | # else |
| 34 | # define setmode _setmode |
| 35 | # undef fileno |
| 36 | # define fileno _fileno |
| 37 | # endif |
| 38 | # ifdef __DJGPP__ |
| 39 | # include <unistd.h> /* declares isatty() */ |
| 40 | /* Avoid putting stdin/stdout in binary mode if it is connected to |
| 41 | the console, because that would make it impossible for the user |
| 42 | to interrupt the program through Ctrl-C or Ctrl-Break. */ |
| 43 | # define SET_BINARY(fd) ((void) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0)) |
| 44 | # else |
| 45 | # define SET_BINARY(fd) ((void) setmode (fd, O_BINARY)) |
| 46 | # endif |
| 47 | #else |
| 48 | /* On reasonable systems, binary I/O is the default. */ |
| 49 | # define SET_BINARY(fd) /* do nothing */ ((void) 0) |
| 50 | #endif |
| 51 | |
| 52 | #endif /* _BINARY_H */ |