1 /* Binary mode I/O. 2 Copyright (C) 2001-2016 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU 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 General Public License for more details. 13 14 You should have received a copy of the GNU 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 /* Include this header after <fcntl.h> and <stdio.h>, because 21 systems that distinguish between text and binary I/O usually 22 define O_BINARY in <fcntl.h>, and the MSVC7 <stdio.h> doesn't 23 like to be included after '#define fileno ...' 24 25 We don't include <fcntl.h> here because not all systems have 26 that header. */ 27 28 #if !defined O_BINARY && defined _O_BINARY 29 /* For MSC-compatible compilers. */ 30 # define O_BINARY _O_BINARY 31 # define O_TEXT _O_TEXT 32 #endif 33 #ifdef __BEOS__ 34 /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */ 35 # undef O_BINARY 36 # undef O_TEXT 37 #endif 38 #if O_BINARY 39 # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__ 40 # include <io.h> /* declares setmode() */ 41 # else 42 # define setmode _setmode 43 # undef fileno 44 # define fileno _fileno 45 # endif 46 # ifdef __DJGPP__ 47 # include <unistd.h> /* declares isatty() */ 48 # /* Avoid putting stdin/stdout in binary mode if it is connected to the 49 # console, because that would make it impossible for the user to 50 # interrupt the program through Ctrl-C or Ctrl-Break. */ 51 # define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0) 52 # else 53 # define SET_BINARY(fd) setmode (fd, O_BINARY) 54 # endif 55 #else 56 /* On reasonable systems, binary I/O is the default. */ 57 # undef O_BINARY 58 # define O_BINARY 0 59 # define SET_BINARY(fd) /* nothing */ 60 #endif 61 62 #endif /* _BINARY_H */ 63
