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