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+/* Binary mode I/O.
+ Copyright (C) 2001, 2003, 2005, 2008, 2009, 2010 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef _BINARY_H
+#define _BINARY_H
+
+/* For systems that distinguish between text and binary I/O.
+ O_BINARY is usually declared in <fcntl.h>. */
+#include <fcntl.h>
+
+/* The MSVC7 <stdio.h> doesn't like to be included after '#define fileno ...',
+ so we include it here first. */
+#include <stdio.h>
+
+#if !defined O_BINARY && defined _O_BINARY
+ /* For MSC-compatible compilers. */
+# define O_BINARY _O_BINARY
+# define O_TEXT _O_TEXT
+#endif
+#if defined __BEOS__ || defined __HAIKU__
+ /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
+# undef O_BINARY
+# undef O_TEXT
+#endif
+
+/* SET_BINARY (fd);
+ changes the file descriptor fd to perform binary I/O. */
+#if O_BINARY
+# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
+# include <io.h> /* declares setmode() */
+# else
+# define setmode _setmode
+# undef fileno
+# define fileno _fileno
+# endif
+# ifdef __DJGPP__
+# include <unistd.h> /* declares isatty() */
+ /* Avoid putting stdin/stdout in binary mode if it is connected to
+ the console, because that would make it impossible for the user
+ to interrupt the program through Ctrl-C or Ctrl-Break. */
+# define SET_BINARY(fd) ((void) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0))
+# else
+# define SET_BINARY(fd) ((void) setmode (fd, O_BINARY))
+# endif
+#else
+ /* On reasonable systems, binary I/O is the default. */
+# undef O_BINARY
+# define O_BINARY 0
+# define SET_BINARY(fd) /* do nothing */ ((void) 0)
+#endif
+
+#endif /* _BINARY_H */