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      1 /* Binary mode I/O.
      2    Copyright (C) 2001, 2003, 2005 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 2, or (at your option)
      7    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, write to the Free Software Foundation,
     16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
     17 
     18 #ifndef _BINARY_H
     19 #define _BINARY_H
     20 
     21 /* For systems that distinguish between text and binary I/O.
     22    O_BINARY is usually declared in <fcntl.h>. */
     23 #include <fcntl.h>
     24 
     25 /* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...',
     26    so we include it here first.  */
     27 #include <stdio.h>
     28 
     29 #if !defined O_BINARY && defined _O_BINARY
     30   /* For MSC-compatible compilers.  */
     31 # define O_BINARY _O_BINARY
     32 # define O_TEXT _O_TEXT
     33 #endif
     34 #ifdef __BEOS__
     35   /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect.  */
     36 # undef O_BINARY
     37 # undef O_TEXT
     38 #endif
     39 #if O_BINARY
     40 # if !(defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__)
     41 #  define setmode _setmode
     42 #  undef fileno
     43 #  define fileno _fileno
     44 # endif
     45 # if defined __DJGPP__ || defined __CYGWIN__
     46 #  include <io.h> /* declares setmode() */
     47 # endif
     48 # ifdef __DJGPP__
     49 #  include <unistd.h> /* declares isatty() */
     50 #  /* Avoid putting stdin/stdout in binary mode if it is connected to the
     51 #     console, because that would make it impossible for the user to
     52 #     interrupt the program through Ctrl-C or Ctrl-Break.  */
     53 #  define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0)
     54 # else
     55 #  define SET_BINARY(fd) setmode (fd, O_BINARY)
     56 # endif
     57 #else
     58   /* On reasonable systems, binary I/O is the default.  */
     59 # undef O_BINARY
     60 # define O_BINARY 0
     61 # define SET_BINARY(fd) /* nothing */
     62 #endif
     63 
     64 #endif /* _BINARY_H */
     65