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/* Binary mode I/O.
Copyright (C) 2001, 2003, 2005, 2008-2011 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
/* For systems that distinguish between text and binary I/O.
O_BINARY is guaranteed by the gnulib <fcntl.h>. */
#include <fcntl.h>
/* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...',
so we include it here first. */
#include <stdio.h>
/* SET_BINARY (fd);
changes the file descriptor fd to perform binary I/O. */
#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) ((void) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0))
# else
# define SET_BINARY(fd) ((void) setmode (fd, O_BINARY))
# endif
#else
/* On reasonable systems, binary I/O is the default. */
# define SET_BINARY(fd) /* do nothing */ ((void) 0)
#endif
#endif /* _BINARY_H */

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