68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/* Set a file descriptor's mode to binary or to text.
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Copyright (C) 2001, 2004 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING.
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If not, write to the Free Software Foundation,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Written by Paul Eggert <eggert@twinsun.com> */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#if HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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typedef enum {false = 0, true = 1} bool;
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#endif
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#if HAVE_SETMODE_DOS
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# include <io.h>
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# if HAVE_FCNTL_H
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# include <fcntl.h>
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# endif
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# if HAVE_UNISTD_H
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# include <unistd.h>
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# endif
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#endif
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#include "setmode.h"
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#undef set_binary_mode
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#ifndef __attribute__
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# if __GNUC__ < 3 || __STRICT_ANSI__
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# define __attribute__(x)
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# endif
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#endif
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/* Set the binary mode of FD to MODE, returning its previous mode.
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MODE is 1 for binary and 0 for text. If setting the mode might
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cause problems, ignore the request and return MODE. Always return
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1 on POSIX platforms, which do not distinguish between text and
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binary. */
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#if HAVE_SETMODE_DOS
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bool
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set_binary_mode (int fd, bool mode)
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{
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if (isatty (fd))
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return mode;
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return setmode (fd, mode ? O_BINARY : O_TEXT) != O_TEXT;
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}
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#else
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static char dummy;
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#endif
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