[bpt/guile.git] / lib / binary-io.h

/* Binary mode I/O.
   Copyright (C) 2001, 2003, 2005, 2008-2012 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser 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 Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser 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 */
Commit	Line	Data
3d458a81	1	/* Binary mode I/O.
f0007cad	2	Copyright (C) 2001, 2003, 2005, 2008-2012 Free Software Foundation, Inc.
3d458a81 AW	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 */