| /* Binary mode I/O. |
| Copyright (C) 2001, 2003, 2005, 2008-2019 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 _GL_UNUSED, int mode _GL_UNUSED) |
| { |
| return O_BINARY; |
| } |
| #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. */ |
| |
| #if defined __DJGPP__ || defined __EMX__ |
| extern int set_binary_mode (int fd, int mode); |
| #else |
| BINARY_IO_INLINE int |
| set_binary_mode (int fd, int mode) |
| { |
| return __gl_setmode (fd, mode); |
| } |
| #endif |
| |
| /* This macro is obsolescent. */ |
| #define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY)) |
| |
| _GL_INLINE_HEADER_END |
| |
| #endif /* _BINARY_H */ |