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Annotation of embedaddon/libiconv/srclib/binary-io.h, revision 1.1.1.3

1.1       misho       1: /* Binary mode I/O.
1.1.1.3 ! misho       2:    Copyright (C) 2001, 2003, 2005, 2008-2019 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
1.1.1.3 ! misho      15:    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
1.1       misho      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: 
1.1.1.3 ! misho      28: #ifndef _GL_INLINE_HEADER_BEGIN
        !            29:  #error "Please include config.h first."
        !            30: #endif
        !            31: _GL_INLINE_HEADER_BEGIN
        !            32: #ifndef BINARY_IO_INLINE
        !            33: # define BINARY_IO_INLINE _GL_INLINE
        !            34: #endif
        !            35: 
1.1       misho      36: #if O_BINARY
                     37: # if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
                     38: #  include <io.h> /* declares setmode() */
1.1.1.3 ! misho      39: #  define __gl_setmode setmode
1.1       misho      40: # else
1.1.1.3 ! misho      41: #  define __gl_setmode _setmode
1.1       misho      42: #  undef fileno
                     43: #  define fileno _fileno
                     44: # endif
                     45: #else
1.1.1.3 ! misho      46:   /* On reasonable systems, binary I/O is the only choice.  */
        !            47:   /* Use a function rather than a macro, to avoid gcc warnings
        !            48:      "warning: statement with no effect".  */
        !            49: BINARY_IO_INLINE int
        !            50: __gl_setmode (int fd _GL_UNUSED, int mode _GL_UNUSED)
        !            51: {
        !            52:   return O_BINARY;
        !            53: }
1.1       misho      54: #endif
                     55: 
1.1.1.3 ! misho      56: #if defined __DJGPP__ || defined __EMX__
        !            57: extern int __gl_setmode_check (int);
        !            58: #else
        !            59: BINARY_IO_INLINE int
        !            60: __gl_setmode_check (int fd _GL_UNUSED) { return 0; }
        !            61: #endif
        !            62: 
        !            63: /* Set FD's mode to MODE, which should be either O_TEXT or O_BINARY.
        !            64:    Return the old mode if successful, -1 (setting errno) on failure.
        !            65:    Ordinarily this function would be called 'setmode', since that is
        !            66:    its name on MS-Windows, but it is called 'set_binary_mode' here
        !            67:    to avoid colliding with a BSD function of another name.  */
        !            68: 
        !            69: BINARY_IO_INLINE int
        !            70: set_binary_mode (int fd, int mode)
        !            71: {
        !            72:   int r = __gl_setmode_check (fd);
        !            73:   return r != 0 ? r : __gl_setmode (fd, mode);
        !            74: }
        !            75: 
        !            76: /* This macro is obsolescent.  */
        !            77: #define SET_BINARY(fd) ((void) set_binary_mode (fd, O_BINARY))
        !            78: 
        !            79: _GL_INLINE_HEADER_END
        !            80: 
1.1       misho      81: #endif /* _BINARY_H */