+/* -*- buffer-read-only: t -*- vi: set ro: */
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* isatty() replacement.
+ Copyright (C) 2012-2014 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/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <unistd.h>
+
+/* This replacement is enabled on native Windows. */
+
+#include <errno.h>
+
+/* Get declarations of the Win32 API functions. */
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+#include "msvc-inval.h"
+
+/* Get _get_osfhandle(). */
+#include "msvc-nothrow.h"
+
+/* Optimized test whether a HANDLE refers to a console.
+ See <http://lists.gnu.org/archive/html/bug-gnulib/2009-08/msg00065.html>. */
+#define IsConsoleHandle(h) (((intptr_t) (h) & 3) == 3)
+
+#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
+static int
+_isatty_nothrow (int fd)
+{
+ int result;
+
+ TRY_MSVC_INVAL
+ {
+ result = _isatty (fd);
+ }
+ CATCH_MSVC_INVAL
+ {
+ result = 0;
+ }
+ DONE_MSVC_INVAL;
+
+ return result;
+}
+#else
+# define _isatty_nothrow _isatty
+#endif
+
+/* Determine whether FD refers to a console device. Return 1 if yes.
+ Return 0 and set errno if no. (ptsname_r relies on the errno value.) */
+int
+isatty (int fd)
+{
+ HANDLE h = (HANDLE) _get_osfhandle (fd);
+ if (h == INVALID_HANDLE_VALUE)
+ {
+ errno = EBADF;
+ return 0;
+ }
+ /* _isatty (fd) tests whether GetFileType of the handle is FILE_TYPE_CHAR.
+ But it does not set errno when it returns 0. */
+ if (_isatty_nothrow (fd))
+ {
+ if (IsConsoleHandle (h))
+ return 1;
+ }
+ errno = ENOTTY;
+ return 0;
+}