mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-26 07:33:47 +00:00
a0202fdc85
This incorporates: 2017-09-13 all: prefer https: URLs This just changes http: to https: in comments, in files copied from Gnulib.
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/* Binary mode I/O.
|
|
Copyright (C) 2001, 2003, 2005, 2008-2017 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 <https://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>
|
|
|
|
#ifndef _GL_INLINE_HEADER_BEGIN
|
|
#error "Please include config.h first."
|
|
#endif
|
|
_GL_INLINE_HEADER_BEGIN
|
|
#ifndef BINARY_IO_INLINE
|
|
# define BINARY_IO_INLINE _GL_INLINE
|
|
#endif
|
|
|
|
#if O_BINARY
|
|
# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
|
|
# include <io.h> /* declares setmode() */
|
|
# define __gl_setmode setmode
|
|
# else
|
|
# define __gl_setmode _setmode
|
|
# undef fileno
|
|
# define fileno _fileno
|
|
# endif
|
|
#else
|
|
/* On reasonable systems, binary I/O is the only choice. */
|
|
/* Use a function rather than a macro, to avoid gcc warnings
|
|
"warning: statement with no effect". */
|
|
BINARY_IO_INLINE int
|
|
__gl_setmode (int fd, int mode)
|
|
{
|
|
(void) fd;
|
|
(void) mode;
|
|
return O_BINARY;
|
|
}
|
|
#endif
|
|
|
|
#if defined __DJGPP__ || defined __EMX__
|
|
extern int __gl_setmode_check (int);
|
|
#else
|
|
BINARY_IO_INLINE int
|
|
__gl_setmode_check (int fd) { return 0; }
|
|
#endif
|
|
|
|
/* Set FD's mode to MODE, which should be either O_TEXT or O_BINARY.
|
|
Return the old mode if successful, -1 (setting errno) on failure.
|
|
Ordinarily this function would be called 'setmode', since that is
|
|
its name on MS-Windows, but it is called 'set_binary_mode' here
|
|
to avoid colliding with a BSD function of another name. */
|
|
|
|
BINARY_IO_INLINE int
|
|
set_binary_mode (int fd, int mode)
|
|
{
|
|
int r = __gl_setmode_check (fd);
|
|
return r != 0 ? r : __gl_setmode (fd, mode);
|
|
}
|
|
|
|
/* This macro is obsolescent. */
|
|
#define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY))
|
|
|
|
_GL_INLINE_HEADER_END
|
|
|
|
#endif /* _BINARY_H */
|