1 /* -*- buffer-read-only: t -*- vi: set ro: */
2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3 /* isatty() replacement.
4 Copyright (C) 2012-2014 Free Software Foundation, Inc.
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This replacement is enabled on native Windows. */
28 /* Get declarations of the Win32 API functions. */
29 #define WIN32_LEAN_AND_MEAN
32 #include "msvc-inval.h"
34 /* Get _get_osfhandle(). */
35 #include "msvc-nothrow.h"
37 /* Optimized test whether a HANDLE refers to a console.
38 See <http://lists.gnu.org/archive/html/bug-gnulib/2009-08/msg00065.html>. */
39 #define IsConsoleHandle(h) (((intptr_t) (h) & 3) == 3)
41 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER
43 _isatty_nothrow (int fd)
49 result = _isatty (fd);
60 # define _isatty_nothrow _isatty
63 /* Determine whether FD refers to a console device. Return 1 if yes.
64 Return 0 and set errno if no. (ptsname_r relies on the errno value.) */
68 HANDLE h = (HANDLE) _get_osfhandle (fd);
69 if (h == INVALID_HANDLE_VALUE)
74 /* _isatty (fd) tests whether GetFileType of the handle is FILE_TYPE_CHAR.
75 But it does not set errno when it returns 0. */
76 if (_isatty_nothrow (fd))
78 if (IsConsoleHandle (h))