gnu/dist/gettext/gettext-tools/lib/binary-io.h

   1 /* Binary mode I/O.
   2    Copyright (C) 2001, 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 #  define fileno _fileno
  43 # endif
  44 # if defined __DJGPP__ || defined __CYGWIN__
  45 #  include <io.h> /* declares setmode() */
  46 # endif
  47 # ifdef __DJGPP__
  48 #  include <unistd.h> /* declares isatty() */
  49 #  /* Avoid putting stdin/stdout in binary mode if it is connected to the
  50 #     console, because that would make it impossible for the user to
  51 #     interrupt the program through Ctrl-C or Ctrl-Break.  */
  52 #  define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0)
  53 # else
  54 #  define SET_BINARY(fd) setmode (fd, O_BINARY)
  55 # endif
  56 #else
  57   /* On reasonable systems, binary I/O is the default.  */
  58 # undef O_BINARY
  59 # define O_BINARY 0
  60 # define SET_BINARY(fd) /* nothing */
  61 #endif
  62
  63 #endif /* _BINARY_H */