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Annotation of embedaddon/libiconv/srclib/binary-io.h, revision 1.1.1.2

1.1       misho       1: /* Binary mode I/O.
1.1.1.2 ! misho       2:    Copyright (C) 2001, 2003, 2005, 2008-2011 Free Software Foundation, Inc.
1.1       misho       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: /* For systems that distinguish between text and binary I/O.
1.1.1.2 ! misho      21:    O_BINARY is guaranteed by the gnulib <fcntl.h>. */
1.1       misho      22: #include <fcntl.h>
                     23: 
                     24: /* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...',
                     25:    so we include it here first.  */
                     26: #include <stdio.h>
                     27: 
1.1.1.2 ! misho      28: /* SET_BINARY (fd);
        !            29:    changes the file descriptor fd to perform binary I/O.  */
1.1       misho      30: #if O_BINARY
                     31: # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
                     32: #  include <io.h> /* declares setmode() */
                     33: # else
                     34: #  define setmode _setmode
                     35: #  undef fileno
                     36: #  define fileno _fileno
                     37: # endif
                     38: # ifdef __DJGPP__
                     39: #  include <unistd.h> /* declares isatty() */
1.1.1.2 ! misho      40:    /* Avoid putting stdin/stdout in binary mode if it is connected to
        !            41:       the console, because that would make it impossible for the user
        !            42:       to interrupt the program through Ctrl-C or Ctrl-Break.  */
        !            43: #  define SET_BINARY(fd) ((void) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0))
1.1       misho      44: # else
1.1.1.2 ! misho      45: #  define SET_BINARY(fd) ((void) setmode (fd, O_BINARY))
1.1       misho      46: # endif
                     47: #else
                     48:   /* On reasonable systems, binary I/O is the default.  */
1.1.1.2 ! misho      49: # define SET_BINARY(fd) /* do nothing */ ((void) 0)
1.1       misho      50: #endif
                     51: 
                     52: #endif /* _BINARY_H */