1 files changed, 67 insertions, 0 deletions

diff --git a/contrib/diff/lib/setmode.c b/contrib/diff/lib/setmode.c
new file mode 100644
index 000000000000..b2b93a6a4414
--- /dev/null
+++ b/contrib/diff/lib/setmode.c
@@ -0,0 +1,67 @@
+/* Set a file descriptor's mode to binary or to text.
+
+   Copyright (C) 2001, 2004 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
+
+#ifndef __attribute__
+# if __GNUC__ < 3 || __STRICT_ANSI__
+#  define __attribute__(x)
+# endif
+#endif
+
+/* 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.  */
+
+#if HAVE_SETMODE_DOS
+bool
+set_binary_mode (int fd, bool mode)
+{
+  if (isatty (fd))
+    return mode;
+  return setmode (fd, mode ? O_BINARY : O_TEXT) != O_TEXT;
+}
+#else
+static char dummy;
+#endif