/*
* conio.h
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is a part of the mingw-runtime package.
- * No warranty is given; refer to the file DISCLAIMER within the package.
*
- * Low level console I/O functions. Pretty please try to use the ANSI
+ * Low level console I/O functions. Pretty please try to use the ANSI
* standard ones if you are writing new code.
*
+ * $Id$
+ *
+ * Written by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
+ * Copyright (C) 1997, 1999-2001, 2003, 2004, 2007, 2018, MinGW.org Project.
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice, this permission notice, and the following
+ * disclaimer shall be included in all copies or substantial portions of
+ * the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
*/
+#ifndef _CONIO_H
+#pragma GCC system_header
-#ifndef _CONIO_H_
-#define _CONIO_H_
+/* When including <wchar.h>, some of the definitions and declarations
+ * which are nominally provided in <conio.h> must be duplicated. Rather
+ * than require duplicated maintenance effort, we provide for partial
+ * inclusion of <conio.h> by <wchar.h>; only when not included in
+ * this partial fashion...
+ */
+#ifndef __WCHAR_H_SOURCED__
+ /* ...which is exclusive to <wchar.h>, do we assert the multiple
+ * inclusion guard for <conio.h> itself.
+ */
+#define _CONIO_H
-/* All the headers include this file. */
+/* All MinGW.org headers are expected to include <_mingw.h>; when
+ * selectively included by <wchar.h>, that responsibility has already
+ * been addressed, but for free-standing inclusion we do so now.
+ */
#include <_mingw.h>
+#endif /* !__WCHAR_H_SOURCED__ */
#ifndef RC_INVOKED
+/* There is nothing here which is useful to the resource compiler;
+ * for any other form of compilation, and regardless of the scope in
+ * which <conio.h> is included, we need definitions for wchar_t, and
+ * wint_t; get them by selective inclusion of <stddef.h>.
+ */
+#define __need_wint_t
+#define __need_wchar_t
+#include <stddef.h>
-#ifdef __cplusplus
-extern "C" {
-#endif
+_BEGIN_C_DECLS
-_CRTIMP char* __cdecl __MINGW_NOTHROW _cgets (char*);
-_CRTIMP int __cdecl __MINGW_NOTHROW _cprintf (const char*, ...);
-_CRTIMP int __cdecl __MINGW_NOTHROW _cputs (const char*);
-_CRTIMP int __cdecl __MINGW_NOTHROW _cscanf (char*, ...);
+#ifdef _CONIO_H
+/* The following declarations are to be exposed only on free-standing
+ * inclusion of <conio.h>
+ */
+_CRTIMP __cdecl __MINGW_NOTHROW char *_cgets (char*);
+_CRTIMP __cdecl __MINGW_NOTHROW int _cprintf (const char*, ...);
+_CRTIMP __cdecl __MINGW_NOTHROW int _cputs (const char*);
+_CRTIMP __cdecl __MINGW_NOTHROW int _cscanf (char*, ...);
-_CRTIMP int __cdecl __MINGW_NOTHROW _getch (void);
-_CRTIMP int __cdecl __MINGW_NOTHROW _getche (void);
-_CRTIMP int __cdecl __MINGW_NOTHROW _kbhit (void);
-_CRTIMP int __cdecl __MINGW_NOTHROW _putch (int);
-_CRTIMP int __cdecl __MINGW_NOTHROW _ungetch (int);
+_CRTIMP __cdecl __MINGW_NOTHROW int _getch (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int _getche (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int _kbhit (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int _putch (int);
+_CRTIMP __cdecl __MINGW_NOTHROW int _ungetch (int);
+#if _WIN32_WINNT >= _WIN32_WINNT_WINXP || __MSVCRT_VERSION__ >= __MSVCR70_DLL
+/* Wide character variants of the console I/O functions were first
+ * introduced in non-free MSVCR70.DLL, and subsequently supported by
+ * MSVCRT.DLL from WinXP onwards. Some are declared in <wchar.t> in
+ * addition to <conio.h>; the following are exclusive to <conio.h>
+ */
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _putwch (wchar_t);
-#ifndef _NO_OLDNAMES
+#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
+/* Variants which do not perform thread locking require non-free
+ * MSVCR80.DLL, or later; they are not supported by MSVCRT.DLL
+ */
+_CRTIMP __cdecl __MINGW_NOTHROW int _getch_nolock (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int _getche_nolock (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int _putch_nolock (int);
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _putwch_nolock (wchar_t);
+_CRTIMP __cdecl __MINGW_NOTHROW int _ungetch_nolock (int);
-_CRTIMP int __cdecl __MINGW_NOTHROW getch (void);
-_CRTIMP int __cdecl __MINGW_NOTHROW getche (void);
-_CRTIMP int __cdecl __MINGW_NOTHROW kbhit (void);
-_CRTIMP int __cdecl __MINGW_NOTHROW putch (int);
-_CRTIMP int __cdecl __MINGW_NOTHROW ungetch (int);
+#endif /* MSVCR80.DLL or later */
+#endif /* WinXP, MSVCR70.DLL, or later */
+
+#ifndef _NO_OLDNAMES
+/* Early versions of the Microsoft runtime library provided a subset
+ * of the above functions, named without the ugly initial underscore;
+ * these remain supported, and should be used when coding to support
+ * legacy Windows platforms.
+ */
+_CRTIMP __cdecl __MINGW_NOTHROW int getch (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int getche (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int kbhit (void);
+_CRTIMP __cdecl __MINGW_NOTHROW int putch (int);
+_CRTIMP __cdecl __MINGW_NOTHROW int ungetch (int);
-#endif /* Not _NO_OLDNAMES */
+#endif /* !_NO_OLDNAMES */
+#endif /* _CONIO_H */
+#if ! (defined _CONIO_H && defined _WCHAR_H)
+/* The following are to be exposed either on free-standing inclusion
+ * of <conio.h>, or on selective inclusion by <wchar.h>, but if both
+ * guards are defined, then this is free-standing inclusion, and we
+ * have already declared these by selective inclusion; there is no
+ * need to declare them a second time.
+ */
+#if _WIN32_WINNT >= _WIN32_WINNT_WINXP || __MSVCRT_VERSION__ >= __MSVCR70_DLL
+/* Wide character variants of the console I/O functions, in this group,
+ * were first introduced in non-free Microsoft runtimes, from MSVCR70.DLL
+ * onwards; they were not supported by MSVCRT.DLL prior to WinXP.
+ */
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _getwch (void);
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _getwche (void);
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _ungetwch (wint_t);
+
+#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
+/* Variants which do not perform thread locking require non-free
+ * MSVCR80.DLL, or later; they are not supported by MSVCRT.DLL
+ */
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _getwch_nolock (void);
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _getwche_nolock (void);
+_CRTIMP __cdecl __MINGW_NOTHROW wint_t _ungetwch_nolock (wint_t);
-#ifdef __cplusplus
-}
-#endif
+#endif /* MSVCR80.DLL or later */
+#endif /* WinXP, MSVCR70.DLL, or later */
+#endif /* ! (_CONIO_H && _WCHAR_H) */
-#endif /* Not RC_INVOKED */
+_END_C_DECLS
-#endif /* Not _CONIO_H_ */
+#endif /* ! RC_INVOKED */
+#endif /* !_CONIO_H: $RCSfile$: end of file */
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