mirror of
https://https.git.savannah.gnu.org/git/gnulib.git
synced 2026-04-28 06:33:36 +00:00
ac19d2a1ff
* lib/streq-opt.h: Renamed from lib/streq.h. * modules/streq-opt: Renamed from modules/streq. * NEWS: Mention the change. * lib/c32is-impl.h: Include streq-opt.h instead of streq.h. * lib/c32to-impl.h: Likewise. * lib/c32rtomb.c: Likewise. * lib/c32width.c: Likewise. * lib/lc-charset-dispatch.c: Likewise. * lib/lc-charset-unicode.c: Likewise. * lib/mbrtoc32.c: Likewise. * lib/uniwidth/cjk.h: Likewise. * lib/wcwidth.c: Likewise. * modules/c32is* (Depends-on): Add streq-opt. Remove streq. * modules/c32to* (Depends-on): Likewise. * modules/c32rtomb (Depends-on): Likewise. * modules/mbrtoc32 (Depends-on): Likewise. * modules/mbrtowc (Depends-on): Likewise. * modules/uchar-h-c23 (Depends-on): Likewise. * modules/unilbrk/u*-possible-linebreaks (Depends-on): Likewise. * modules/uniwidth/width (Depends-on): Likewise. * modules/wcwidth (Depends-on): Likewise. * MODULES.html.sh: Update.
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/* Test whether a 32-bit wide character belongs to a specific character class.
|
|
Copyright (C) 2020-2026 Free Software Foundation, Inc.
|
|
|
|
This file is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation; either version 2.1 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This file 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Bruno Haible <bruno@clisp.org>, 2020. */
|
|
|
|
#include <wchar.h>
|
|
#include <wctype.h>
|
|
|
|
#ifdef __CYGWIN__
|
|
# include <cygwin/version.h>
|
|
#endif
|
|
|
|
#if GNULIB_defined_mbstate_t
|
|
# include "localcharset.h"
|
|
# include "streq-opt.h"
|
|
#endif
|
|
|
|
#if GL_CHAR32_T_IS_UNICODE
|
|
# include "lc-charset-unicode.h"
|
|
#endif
|
|
|
|
#include "unictype.h"
|
|
|
|
#if _GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t
|
|
_GL_EXTERN_INLINE
|
|
#endif
|
|
int
|
|
FUNC (wint_t wc)
|
|
{
|
|
/* The char32_t encoding of a multibyte character is defined by the way
|
|
mbrtoc32() is defined. */
|
|
|
|
#if GNULIB_defined_mbstate_t /* AIX */
|
|
/* mbrtoc32() is defined on top of mbtowc() for the non-UTF-8 locales
|
|
and directly for the UTF-8 locales. */
|
|
if (wc != WEOF)
|
|
{
|
|
const char *encoding = locale_charset ();
|
|
if (STREQ_OPT (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0))
|
|
return UCS_FUNC (wc);
|
|
else
|
|
return WCHAR_FUNC (wc);
|
|
}
|
|
else
|
|
return 0;
|
|
|
|
#elif HAVE_WORKING_MBRTOC32 && HAVE_WORKING_C32RTOMB /* glibc, Android */
|
|
/* mbrtoc32() is essentially defined by the system libc. */
|
|
|
|
# if _GL_WCHAR_T_IS_UCS4
|
|
/* The char32_t encoding of a multibyte character is known to be the same as
|
|
the wchar_t encoding. */
|
|
return WCHAR_FUNC (wc);
|
|
# else
|
|
/* The char32_t encoding of a multibyte character is known to be UCS-4,
|
|
different from the wchar_t encoding. */
|
|
if (wc != WEOF)
|
|
return UCS_FUNC (wc);
|
|
else
|
|
return 0;
|
|
# endif
|
|
|
|
#elif _GL_SMALL_WCHAR_T /* Cygwin, mingw, MSVC */
|
|
/* The wchar_t encoding is UTF-16.
|
|
The char32_t encoding is UCS-4. */
|
|
|
|
# if defined __CYGWIN__ && CYGWIN_VERSION_DLL_MAJOR >= 1007
|
|
/* As an extension to POSIX, the iswalnum() function of Cygwin >= 1.7
|
|
supports also wc arguments outside the Unicode BMP, that is, outside
|
|
the 'wchar_t' range. See
|
|
<https://lists.gnu.org/archive/html/bug-gnulib/2011-02/msg00019.html>
|
|
= <https://cygwin.com/ml/cygwin/2011-02/msg00044.html>. */
|
|
return WCHAR_FUNC (wc);
|
|
# else
|
|
if (wc == WEOF || wc == (wchar_t) wc)
|
|
/* wc is in the range for the isw* functions. */
|
|
return WCHAR_FUNC (wc);
|
|
else
|
|
return UCS_FUNC (wc);
|
|
# endif
|
|
|
|
#else /* macOS, FreeBSD, NetBSD, OpenBSD, HP-UX, Solaris, Minix, Android */
|
|
/* char32_t and wchar_t are equivalent. */
|
|
static_assert (sizeof (char32_t) == sizeof (wchar_t));
|
|
|
|
# if GL_CHAR32_T_IS_UNICODE && GL_CHAR32_T_VS_WCHAR_T_NEEDS_CONVERSION
|
|
return UCS_FUNC (wc);
|
|
# else
|
|
return WCHAR_FUNC (wc);
|
|
# endif
|
|
#endif
|
|
}
|