*
* Unattributed original source.
* Adapted by Rob Savoye <rob@cygnus.com>
- * Copyright (C) 1997, 1999-2009, 2011, 2015, 2016, MinGW.org Project.
+ * Copyright (C) 1997, 1999-2009, 2011, 2015, 2016, 2018-2020,
+ * MinGW.org Project.
*
*
* Permission is hereby granted, free of charge, to any person obtaining a
* int _wstat64i32 (const wchar_t *, struct _stat64i32 *);
*
*
+ * from...
+ */
+#include "conio.h"
+/* ...we obtain, depending on active MSVCRT.DLL version conformity,
+ * or non-free run-time version selection, an appropriate subset of:
+ *
+ * wint_t _getwch (void);
+ * wint_t _getwche (void);
+ * wint_t _ungetwch (wint_t);
+ *
+ * ...and for non-free run-times from MSVCR80.DLL onwards only:
+ *
+ * wint_t _getwch_nolock (void);
+ * wint_t _getwche_nolock (void);
+ * wint_t _ungetwch_nolock (wint_t);
+ *
+ *
* and from...
*/
#include "io.h"
#endif /* !_NO_OLDNAMES */
#endif /* !__STRICT_ANSI__ */
+#if _POSIX_C_SOURCE >= 200809L
+#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
+/* MSVCR80.DLL adds a (mostly) POSIX.1-2008 conforming wcsnlen(); (it's
+ * also available in MSVCRT.DLL from _WIN32_WINNT_VISTA onwards, but we
+ * pretend otherwise, since recent GCC will try to use the function when
+ * it can be found in libmsvcrt.a, so breaking it for use on WinXP and
+ * earlier).
+ */
+#ifndef __STRICT_ANSI__ /* N.B.: this is not an ISO-C function */
+_CRTIMP __cdecl __MINGW_NOTHROW char *wcsnlen (const wchar_t *, size_t);
+#endif
+
+#else /* MSVCRT.DLL || pre-MSVCR80.DLL */
+/* Emulation, to support recent POSIX.1; we prefer this for ALL versions
+ * of MSVCRT.DLL, (even those which already provide wcsnlen()); to avoid
+ * the GCC breakage noted above. (Note that we implement wcsnlen() with
+ * the alternative external name, __mingw_wcsnlen() in libmingwex.a, to
+ * avoid possible link time collision with MSVCR80.DLL's implementation,
+ * then map this to wcsnlen() via a __CRT_ALIAS, with stubs designated
+ * for linking from within the appropriate oldname libraries.
+ */
+extern size_t __mingw_wcsnlen (const wchar_t *, size_t);
+
+__JMPSTUB__(( LIB=coldname; FUNCTION=wcsnlen ))
+__CRT_ALIAS size_t wcsnlen (const wchar_t *__text, size_t __maxlen)
+{ return __mingw_wcsnlen (__text, __maxlen); }
+
+#endif /* MSVCRT.DLL || pre-MSVCR80.DLL */
+#endif /* _POSIX_C_SOURCE >= 200809L */
+
/* This completes the set of declarations which are to be duplicated by
* inclusion of <string.h>; revert the declarative condition, to make it
* specific to <wchar.h> alone.
typedef int mbstate_t;
-/* The following multi-byte character conversion functions are
- * implemented in libmingwex.a, (and maybe also in some non-free
- * Microsoft libraries, such as MSVCP60.DLL and later).
+/* The following multi-byte character conversion functions have been
+ * implemented by Microsoft, in non-free MSVCR80.DLL and later, (and
+ * maybe also in some earlier non-free DLLs, such as MSVCP60.DLL and
+ * later); they are also available in MSVCRT.DLL, from Vista onward,
+ * but to provide continuing support for earlier Windows versions,
+ * we invoke them via MinGW specific wrappers, defined below.
*/
__cdecl __MINGW_NOTHROW wint_t btowc (int);
__cdecl __MINGW_NOTHROW int wctob (wint_t);
-__cdecl __MINGW_NOTHROW
-size_t mbrlen (const char *__restrict__, size_t, mbstate_t *__restrict__);
+__cdecl __MINGW_NOTHROW size_t mbrlen
+(const char *__restrict__, size_t, mbstate_t *__restrict__);
__cdecl __MINGW_NOTHROW size_t mbrtowc
(wchar_t *__restrict__, const char *__restrict__, size_t, mbstate_t *__restrict__);
__cdecl __MINGW_NOTHROW size_t mbsrtowcs
(wchar_t *__restrict__, const char **__restrict__, size_t, mbstate_t *__restrict__);
-__cdecl __MINGW_NOTHROW
-size_t wcrtomb (char * __restrict__, wchar_t, mbstate_t *__restrict__);
+__cdecl __MINGW_NOTHROW size_t wcrtomb
+(char * __restrict__, wchar_t, mbstate_t *__restrict__);
__cdecl __MINGW_NOTHROW size_t wcsrtombs
(char *__restrict__, const wchar_t **__restrict__, size_t, mbstate_t *__restrict__);
+/* To provide support for the above, on legacy Windows versions,
+ * we implement fall back wrappers in libmingwex.a; each of these
+ * will delegate to the corresponding Microsoft implementation, if
+ * it exists in the process address space; otherwise, execution
+ * will fall back to a MinGW implementation...
+ */
+__cdecl __MINGW_NOTHROW wint_t __msvcrt_btowc (int);
+
+__cdecl __MINGW_NOTHROW size_t __msvcrt_mbrlen
+(const char *__restrict__, size_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW size_t __msvcrt_mbrtowc
+(wchar_t *__restrict__, const char *__restrict__, size_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW size_t __msvcrt_mbsrtowcs
+(wchar_t *__restrict__, const char **__restrict__, size_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW int __msvcrt_wctob (wint_t);
+
+__cdecl __MINGW_NOTHROW size_t __msvcrt_wcrtomb
+(char * __restrict__, wchar_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW size_t __msvcrt_wcsrtombs
+(char *__restrict__, const wchar_t **__restrict__, size_t, mbstate_t *__restrict__);
+
+/* ...whereas, these alternatives will always invoke the MinGW
+ * fall back implementations, without considering any possible
+ * reference to MSVCRT.DLL or MSVCR80.DLL implementations.
+ */
+__cdecl __MINGW_NOTHROW wint_t __mingw_btowc (int);
+
+__cdecl __MINGW_NOTHROW size_t __mingw_mbrlen
+(const char *__restrict__, size_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW size_t __mingw_mbrtowc
+(wchar_t *__restrict__, const char *__restrict__, size_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW size_t __mingw_mbsrtowcs
+(wchar_t *__restrict__, const char **__restrict__, size_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW int __mingw_wctob (wint_t);
+
+__cdecl __MINGW_NOTHROW size_t __mingw_wcrtomb
+(char * __restrict__, wchar_t, mbstate_t *__restrict__);
+
+__cdecl __MINGW_NOTHROW size_t __mingw_wcsrtombs
+(char *__restrict__, const wchar_t **__restrict__, size_t, mbstate_t *__restrict__);
+
+#if __MSVCRT_VERSION__ < __MSVCR80_DLL
+/* FIXME: Maybe consider these mappings, even for linking with the
+ * non-free MSVCR80.DLL, and its descendants.
+ *
+ * For linking with all versions of MSVCRT.DLL, and with non-free
+ * alternatives predating MSVCR80.DLL, we enforce inline mapping to
+ * the libmingwex.a implementations, (which will delegate the calls
+ * to the Microsoft DLL implementations, when they are available).
+ */
+__CRT_ALIAS __cdecl __MINGW_NOTHROW wint_t btowc (int __c)
+{ return __msvcrt_btowc( __c ); }
+
+__CRT_ALIAS __cdecl __MINGW_NOTHROW size_t mbrlen
+(const char *__mbc, size_t __n, mbstate_t *__ps)
+{ return __msvcrt_mbrlen( __mbc, __n, __ps ); }
+
+__CRT_ALIAS __cdecl __MINGW_NOTHROW size_t mbrtowc
+(wchar_t *__wc, const char *__mbc, size_t __n, mbstate_t *__ps)
+{ return __msvcrt_mbrtowc( __wc, __mbc, __n, __ps ); }
+
+__CRT_ALIAS __cdecl __MINGW_NOTHROW size_t mbsrtowcs
+(wchar_t *__wcs, const char **__mbs, size_t __n, mbstate_t *__ps)
+{ return __msvcrt_mbsrtowcs( __wcs, __mbs, __n, __ps ); }
+
+__CRT_ALIAS __cdecl __MINGW_NOTHROW int wctob (wint_t __wc)
+{ return __msvcrt_wctob( __wc ); }
+
+__CRT_ALIAS __cdecl __MINGW_NOTHROW size_t wcrtomb
+(char * __mbc, wchar_t __wc, mbstate_t *__ps)
+{ return __msvcrt_wcrtomb(__mbc, __wc, __ps); }
+
+__CRT_ALIAS __cdecl __MINGW_NOTHROW size_t wcsrtombs
+(char *__mbs, const wchar_t **__wcs, size_t __len, mbstate_t *__ps)
+{ return __msvcrt_wcsrtombs(__mbs, __wcs, __len, __ps); }
+
+#endif /* ! MSVCR80.DLL or later */
+
#if defined _ISOC99_SOURCE || defined __cplusplus
/* These ISO-C99 functions are implemented in libmingwex.a,
* or, in some cases, as inline stubs; while provided as MinGW
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