version 1.1.1.1, 2012/02/21 22:57:48
|
version 1.1.1.3, 2021/03/17 13:38:46
|
Line 1
|
Line 1
|
/* Binary mode I/O. |
/* Binary mode I/O. |
Copyright (C) 2001, 2003, 2005, 2008 Free Software Foundation, Inc. | Copyright (C) 2001, 2003, 2005, 2008-2019 Free Software Foundation, Inc. |
|
|
This program is free software: you can redistribute it and/or modify |
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 |
it under the terms of the GNU General Public License as published by |
Line 12
|
Line 12
|
GNU General Public License for more details. |
GNU General Public License for more details. |
|
|
You should have received a copy of the GNU General Public License |
You should have received a copy of the GNU General Public License |
along with this program. If not, see <http://www.gnu.org/licenses/>. */ | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
|
|
#ifndef _BINARY_H |
#ifndef _BINARY_H |
#define _BINARY_H |
#define _BINARY_H |
|
|
/* For systems that distinguish between text and binary I/O. |
/* For systems that distinguish between text and binary I/O. |
O_BINARY is usually declared in <fcntl.h>. */ | O_BINARY is guaranteed by the gnulib <fcntl.h>. */ |
#include <fcntl.h> |
#include <fcntl.h> |
|
|
/* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...', |
/* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...', |
so we include it here first. */ |
so we include it here first. */ |
#include <stdio.h> |
#include <stdio.h> |
|
|
#if !defined O_BINARY && defined _O_BINARY | #ifndef _GL_INLINE_HEADER_BEGIN |
/* For MSC-compatible compilers. */ | #error "Please include config.h first." |
# define O_BINARY _O_BINARY | |
# define O_TEXT _O_TEXT | |
#endif |
#endif |
#if defined __BEOS__ || defined __HAIKU__ | _GL_INLINE_HEADER_BEGIN |
/* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ | #ifndef BINARY_IO_INLINE |
# undef O_BINARY | # define BINARY_IO_INLINE _GL_INLINE |
# undef O_TEXT | |
#endif |
#endif |
|
|
#if O_BINARY |
#if O_BINARY |
# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ |
# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ |
# include <io.h> /* declares setmode() */ |
# include <io.h> /* declares setmode() */ |
|
# define __gl_setmode setmode |
# else |
# else |
# define setmode _setmode | # define __gl_setmode _setmode |
# undef fileno |
# undef fileno |
# define fileno _fileno |
# define fileno _fileno |
# endif |
# 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 |
#else |
/* On reasonable systems, binary I/O is the default. */ | /* On reasonable systems, binary I/O is the only choice. */ |
# undef O_BINARY | /* Use a function rather than a macro, to avoid gcc warnings |
# define O_BINARY 0 | "warning: statement with no effect". */ |
# define SET_BINARY(fd) /* nothing */ | BINARY_IO_INLINE int |
| __gl_setmode (int fd _GL_UNUSED, int mode _GL_UNUSED) |
| { |
| return O_BINARY; |
| } |
#endif |
#endif |
|
|
|
#if defined __DJGPP__ || defined __EMX__ |
|
extern int __gl_setmode_check (int); |
|
#else |
|
BINARY_IO_INLINE int |
|
__gl_setmode_check (int fd _GL_UNUSED) { 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 */ |
#endif /* _BINARY_H */ |