| /* Binary mode I/O. |
| Copyright (C) 2001-2024 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _BINARY_H |
| #define _BINARY_H |
| |
| /* Include this header after <fcntl.h> and <stdio.h>, because |
| systems that distinguish between text and binary I/O usually |
| define O_BINARY in <fcntl.h>, and the MSVC7 <stdio.h> doesn't |
| like to be included after '#define fileno ...' |
| |
| We don't include <fcntl.h> here because not all systems have |
| that header. */ |
| |
| #if !defined O_BINARY && defined _O_BINARY |
| /* For MSC-compatible compilers. */ |
| # define O_BINARY _O_BINARY |
| # define O_TEXT _O_TEXT |
| #endif |
| #ifdef __BEOS__ |
| /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */ |
| # undef O_BINARY |
| # undef O_TEXT |
| #endif |
| #if O_BINARY |
| # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ |
| # include <io.h> /* declares setmode() */ |
| # else |
| # define setmode _setmode |
| # undef fileno |
| # define fileno _fileno |
| # endif |
| # ifdef __DJGPP__ |
| # include <unistd.h> /* declares isatty() */ |
| # /* Avoid putting stdin/stdout in binary mode if it is connected to the |
| # console, because that would make it impossible for the user to |
| # interrupt the program through Ctrl-C or Ctrl-Break. */ |
| # define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0) |
| # else |
| # define SET_BINARY(fd) setmode (fd, O_BINARY) |
| # endif |
| #else |
| /* On reasonable systems, binary I/O is the default. */ |
| # undef O_BINARY |
| # define O_BINARY 0 |
| # define SET_BINARY(fd) /* nothing */ |
| #endif |
| |
| #endif /* _BINARY_H */ |