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-rw-r--r--lib/uchar.in.h910
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diff --git a/lib/uchar.in.h b/lib/uchar.in.h
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--- /dev/null
+++ b/lib/uchar.in.h
@@ -0,0 +1,910 @@
+/* <uchar.h> substitute - 16-bit and 32-bit wide character types.
+ Copyright (C) 2019-2024 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>, 2019. */
+
+/*
+ * ISO C 23 <uchar.h> for platforms that lack it.
+ */
+
+#ifndef _@GUARD_PREFIX@_UCHAR_H
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+/* The include_next requires a split double-inclusion guard. */
+#if @HAVE_UCHAR_H@
+# if defined __HAIKU__
+/* Work around <https://dev.haiku-os.org/ticket/17040>. */
+# include <stdint.h>
+# endif
+/* On AIX 7.2 with xlclang++, /usr/include/uchar.h produces compilation errors
+ because it contains typedef definitions of char16_t and char32_t, however
+ char16_t and char32_t are keywords in this situation. To work around it,
+ define char16_t and char32_t as macros. */
+# if defined __cplusplus && defined _AIX && defined __ibmxl__ && defined __clang__
+# define char16_t gl_char16_t
+# define char32_t gl_char32_t
+# endif
+# @INCLUDE_NEXT@ @NEXT_UCHAR_H@
+#endif
+
+#ifndef _@GUARD_PREFIX@_UCHAR_H
+#define _@GUARD_PREFIX@_UCHAR_H
+
+/* This file uses _GL_INLINE_HEADER_BEGIN, _GL_INLINE, _GL_BEGIN_C_LINKAGE,
+ _GL_ATTRIBUTE_PURE, GNULIB_POSIXCHECK, HAVE_RAW_DECL_*. */
+#if !_GL_CONFIG_H_INCLUDED
+ #error "Please include config.h first."
+#endif
+
+/* Get uint_least16_t, uint_least32_t. */
+#include <stdint.h>
+
+/* Get mbstate_t, size_t. */
+#include <wchar.h>
+
+/* For the inline functions. */
+#include <string.h>
+#include <wctype.h>
+
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+ The attribute __pure__ was added in gcc 2.96. */
+#ifndef _GL_ATTRIBUTE_PURE
+# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || defined __clang__
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+# else
+# define _GL_ATTRIBUTE_PURE /* empty */
+# endif
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_ARG_NONNULL is copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
+
+
+_GL_INLINE_HEADER_BEGIN
+
+
+#if !(@HAVE_UCHAR_H@ || (defined __cplusplus && @CXX_HAS_CHAR8_TYPE@))
+
+/* An 8-bit variant of wchar_t.
+ Note: This type is only mandated by ISO C 23 or newer, and it does
+ denote UTF-8 units. */
+typedef unsigned char char8_t;
+
+#elif @GNULIBHEADERS_OVERRIDE_CHAR8_T@
+
+typedef unsigned char gl_char8_t;
+# define char8_t gl_char8_t
+
+#endif
+
+#if !(@HAVE_UCHAR_H@ || (defined __cplusplus && @CXX_HAS_UCHAR_TYPES@))
+
+/* A 16-bit variant of wchar_t.
+ Note: This type is only mandated by ISO C 11 or newer. In ISO C 23
+ and newer, it denotes UTF-16 units; in older versions of ISO C it did
+ so only on platforms on which __STDC_UTF_16__ was defined. */
+typedef uint_least16_t char16_t;
+
+#elif @GNULIBHEADERS_OVERRIDE_CHAR16_T@
+
+typedef uint_least16_t gl_char16_t;
+# define char16_t gl_char16_t
+
+#endif
+
+#if !(@HAVE_UCHAR_H@ || (defined __cplusplus && @CXX_HAS_UCHAR_TYPES@))
+
+/* A 32-bit variant of wchar_t.
+ Note: This type is only mandated by ISO C 11 or newer. In ISO C 23
+ and newer, it denotes UTF-32 code points; in older versions of ISO C
+ it did so only on platforms on which __STDC_UTF_32__ was defined.
+ In gnulib, we guarantee that it denotes UTF-32 code points if and
+ only if the module 'uchar-c23' is in use. */
+typedef uint_least32_t char32_t;
+
+#elif @GNULIBHEADERS_OVERRIDE_CHAR32_T@
+
+typedef uint_least32_t gl_char32_t;
+# define char32_t gl_char32_t
+
+#endif
+
+/* Define if a 'char32_t' can hold more characters than a 'wchar_t'. */
+#if @SMALL_WCHAR_T@ /* 32-bit AIX, Cygwin, native Windows */
+# define _GL_SMALL_WCHAR_T 1
+#endif
+
+/* Define if 'wchar_t', like 'char32_t',
+ - is a 32-bit type, and
+ - represents Unicode code points.
+ For this test, we can use __STDC_ISO_10646__ (defined by glibc, musl libc,
+ Cygwin) but need to consider _GL_SMALL_WCHAR_T, so as to exclude Cygwin.
+ We cannot use __STDC_UTF_16__ or __STDC_UTF_32__
+ - because these macros provide info about char16_t and char32_t (not
+ wchar_t!), and
+ - because GCC >= 4.9 defines these macros on all platforms, even on
+ FreeBSD and Solaris.
+ We should better not use __STD_UTF_16__, __STD_UTF_32__ either, because
+ these macros are misspellings, only defined by Android's <uchar.h>. */
+#if defined __STDC_ISO_10646__ && !_GL_SMALL_WCHAR_T
+/* glibc, musl libc */
+# define _GL_WCHAR_T_IS_UCS4 1
+#endif
+#if _GL_WCHAR_T_IS_UCS4
+static_assert (sizeof (char32_t) == sizeof (wchar_t));
+#endif
+
+
+/* Convert a single-byte character to a 32-bit wide character. */
+#if @GNULIB_BTOC32@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_BTOC32
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ATTRIBUTE_PURE wint_t
+btoc32 (int c)
+{
+ return
+# if @GNULIB_BTOWC@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ btowc (c);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (btoc32, wint_t, (int c) _GL_ATTRIBUTE_PURE);
+# endif
+_GL_CXXALIAS_SYS (btoc32, wint_t, (int c));
+_GL_CXXALIASWARN (btoc32);
+#endif
+
+
+/* Test a specific property of a 32-bit wide character. */
+#if @GNULIB_C32ISALNUM@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISALNUM
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isalnum (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswalnum (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isalnum, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isalnum, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isalnum);
+#endif
+#if @GNULIB_C32ISALPHA@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISALPHA
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isalpha (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswalpha (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isalpha, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isalpha, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isalpha);
+#endif
+#if @GNULIB_C32ISBLANK@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISBLANK
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isblank (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswblank (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isblank, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isblank, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isblank);
+#endif
+#if @GNULIB_C32ISCNTRL@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISCNTRL
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32iscntrl (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswcntrl (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32iscntrl, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32iscntrl, int, (wint_t wc));
+_GL_CXXALIASWARN (c32iscntrl);
+#endif
+#if @GNULIB_C32ISDIGIT@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISDIGIT
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isdigit (wint_t wc)
+{
+ return
+# if @GNULIB_ISWDIGIT@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswdigit (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isdigit, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isdigit, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isdigit);
+#endif
+#if @GNULIB_C32ISGRAPH@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISGRAPH
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isgraph (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswgraph (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isgraph, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isgraph, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isgraph);
+#endif
+#if @GNULIB_C32ISLOWER@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISLOWER
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32islower (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswlower (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32islower, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32islower, int, (wint_t wc));
+_GL_CXXALIASWARN (c32islower);
+#endif
+#if @GNULIB_C32ISPRINT@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISPRINT
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isprint (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswprint (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isprint, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isprint, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isprint);
+#endif
+#if @GNULIB_C32ISPUNCT@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISPUNCT
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32ispunct (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswpunct (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32ispunct, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32ispunct, int, (wint_t wc));
+_GL_CXXALIASWARN (c32ispunct);
+#endif
+#if @GNULIB_C32ISSPACE@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISSPACE
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isspace (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswspace (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isspace, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isspace, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isspace);
+#endif
+#if @GNULIB_C32ISUPPER@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISUPPER
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isupper (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswupper (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isupper, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isupper, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isupper);
+#endif
+#if @GNULIB_C32ISXDIGIT@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32ISXDIGIT
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32isxdigit (wint_t wc)
+{
+ return
+# if @GNULIB_ISWXDIGIT@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswxdigit (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32isxdigit, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32isxdigit, int, (wint_t wc));
+_GL_CXXALIASWARN (c32isxdigit);
+#endif
+
+
+/* Case mapping of a 32-bit wide character. */
+#if @GNULIB_C32TOLOWER@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32TOLOWER
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE wint_t
+c32tolower (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ towlower (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32tolower, wint_t, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32tolower, wint_t, (wint_t wc));
+_GL_CXXALIASWARN (c32tolower);
+#endif
+#if @GNULIB_C32TOUPPER@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32TOUPPER
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE wint_t
+c32toupper (wint_t wc)
+{
+ return
+# if defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ towupper (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32toupper, wint_t, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32toupper, wint_t, (wint_t wc));
+_GL_CXXALIASWARN (c32toupper);
+#endif
+
+
+/* Number of screen columns needed for a 32-bit wide character. */
+#if @GNULIB_C32WIDTH@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32WIDTH
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32width (char32_t wc)
+{
+ return
+# if @GNULIB_WCWIDTH@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wcwidth (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32width, int, (char32_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32width, int, (char32_t wc));
+_GL_CXXALIASWARN (c32width);
+#endif
+
+
+/* Converts a 32-bit wide character to a multibyte character. */
+#if @GNULIB_C32RTOMB@
+# if @REPLACE_C32RTOMB@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef c32rtomb
+# define c32rtomb rpl_c32rtomb
+# endif
+_GL_FUNCDECL_RPL (c32rtomb, size_t, (char *s, char32_t wc, mbstate_t *ps));
+_GL_CXXALIAS_RPL (c32rtomb, size_t, (char *s, char32_t wc, mbstate_t *ps));
+# else
+# if !@HAVE_C32RTOMB@
+_GL_FUNCDECL_SYS (c32rtomb, size_t, (char *s, char32_t wc, mbstate_t *ps));
+# endif
+_GL_CXXALIAS_SYS (c32rtomb, size_t, (char *s, char32_t wc, mbstate_t *ps));
+# endif
+# if __GLIBC__ + (__GLIBC_MINOR__ >= 16) > 2
+_GL_CXXALIASWARN (c32rtomb);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef c32rtomb
+# if HAVE_RAW_DECL_C32RTOMB
+_GL_WARN_ON_USE (c32rtomb, "c32rtomb is not portable - "
+ "use gnulib module c32rtomb for portability");
+# endif
+#endif
+
+
+/* Convert a 32-bit wide string to a string. */
+#if @GNULIB_C32SNRTOMBS@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32SNRTOMBS
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) size_t
+c32snrtombs (char *dest, const char32_t **srcp, size_t srclen, size_t len,
+ mbstate_t *ps)
+{
+ return
+# if @GNULIB_WCSNRTOMBS@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wcsnrtombs (dest, (const wchar_t **) srcp, srclen, len, ps);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32snrtombs, size_t,
+ (char *dest, const char32_t **srcp, size_t srclen, size_t len,
+ mbstate_t *ps)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (c32snrtombs, size_t,
+ (char *dest, const char32_t **srcp, size_t srclen, size_t len,
+ mbstate_t *ps));
+_GL_CXXALIASWARN (c32snrtombs);
+#endif
+
+
+/* Convert a 32-bit wide string to a string. */
+#if @GNULIB_C32SRTOMBS@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32SRTOMBS
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) size_t
+c32srtombs (char *dest, const char32_t **srcp, size_t len, mbstate_t *ps)
+{
+ return
+# if @GNULIB_WCSRTOMBS@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wcsrtombs (dest, (const wchar_t **) srcp, len, ps);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32srtombs, size_t,
+ (char *dest, const char32_t **srcp, size_t len, mbstate_t *ps)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (c32srtombs, size_t,
+ (char *dest, const char32_t **srcp, size_t len,
+ mbstate_t *ps));
+_GL_CXXALIASWARN (c32srtombs);
+#endif
+
+
+/* Convert a 32-bit wide string to a string. */
+#if @GNULIB_C32STOMBS@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32STOMBS
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) size_t
+c32stombs (char *dest, const char32_t *src, size_t len)
+{
+ mbstate_t state;
+
+ mbszero (&state);
+ return c32srtombs (dest, &src, len, &state);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32stombs, size_t,
+ (char *dest, const char32_t *src, size_t len)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (c32stombs, size_t,
+ (char *dest, const char32_t *src, size_t len));
+_GL_CXXALIASWARN (c32stombs);
+#endif
+
+
+/* Number of screen columns needed for a size-bounded 32-bit wide string. */
+#if @GNULIB_C32SWIDTH@
+# if (_GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t) && !defined IN_C32SWIDTH
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((1)) int
+c32swidth (const char32_t *s, size_t n)
+{
+ return
+# if @GNULIB_WCSWIDTH@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wcswidth ((const wchar_t *) s, n);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32swidth, int, (const char32_t *s, size_t n)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (c32swidth, int, (const char32_t *s, size_t n));
+_GL_CXXALIASWARN (c32swidth);
+#endif
+
+
+/* Converts a 32-bit wide character to unibyte character.
+ Returns the single-byte representation of WC if it exists,
+ or EOF otherwise. */
+#if @GNULIB_C32TOB@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32TOB
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32tob (wint_t wc)
+{
+ return
+# if @GNULIB_WCTOB@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wctob (wc);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32tob, int, (wint_t wc));
+# endif
+_GL_CXXALIAS_SYS (c32tob, int, (wint_t wc));
+_GL_CXXALIASWARN (c32tob);
+#endif
+
+
+/* Converts a multibyte character to a 32-bit wide character. */
+#if @GNULIB_MBRTOC32@
+# if @REPLACE_MBRTOC32@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef mbrtoc32
+# define mbrtoc32 rpl_mbrtoc32
+# endif
+_GL_FUNCDECL_RPL (mbrtoc32, size_t,
+ (char32_t *pc, const char *s, size_t n, mbstate_t *ps));
+_GL_CXXALIAS_RPL (mbrtoc32, size_t,
+ (char32_t *pc, const char *s, size_t n, mbstate_t *ps));
+# else
+# if !@HAVE_MBRTOC32@
+_GL_FUNCDECL_SYS (mbrtoc32, size_t,
+ (char32_t *pc, const char *s, size_t n, mbstate_t *ps));
+# endif
+_GL_CXXALIAS_SYS (mbrtoc32, size_t,
+ (char32_t *pc, const char *s, size_t n, mbstate_t *ps));
+# endif
+# if __GLIBC__ + (__GLIBC_MINOR__ >= 16) > 2
+_GL_CXXALIASWARN (mbrtoc32);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbrtoc32
+# if HAVE_RAW_DECL_MBRTOC32
+_GL_WARN_ON_USE (mbrtoc32, "mbrtoc32 is not portable - "
+ "use gnulib module mbrtoc32 for portability");
+# endif
+#endif
+
+
+/* Converts a multibyte character and returns the next 16-bit wide
+ character. */
+#if @GNULIB_MBRTOC16@
+# if @REPLACE_MBRTOC16@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef mbrtoc16
+# define mbrtoc16 rpl_mbrtoc16
+# endif
+_GL_FUNCDECL_RPL (mbrtoc16, size_t,
+ (char16_t *pc, const char *s, size_t n, mbstate_t *ps));
+_GL_CXXALIAS_RPL (mbrtoc16, size_t,
+ (char16_t *pc, const char *s, size_t n, mbstate_t *ps));
+# else
+# if !@HAVE_MBRTOC32@
+_GL_FUNCDECL_SYS (mbrtoc16, size_t,
+ (char16_t *pc, const char *s, size_t n, mbstate_t *ps));
+# endif
+_GL_CXXALIAS_SYS (mbrtoc16, size_t,
+ (char16_t *pc, const char *s, size_t n, mbstate_t *ps));
+# endif
+# if __GLIBC__ + (__GLIBC_MINOR__ >= 16) > 2
+_GL_CXXALIASWARN (mbrtoc16);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mbrtoc16
+# if HAVE_RAW_DECL_MBRTOC16
+_GL_WARN_ON_USE (mbrtoc16, "mbrtoc16 is not portable - "
+ "use gnulib module mbrtoc16 for portability");
+# endif
+#endif
+
+
+/* Convert a string to a 32-bit wide string. */
+#if @GNULIB_MBSNRTOC32S@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_MBSNRTOC32S
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) size_t
+mbsnrtoc32s (char32_t *dest, const char **srcp, size_t srclen, size_t len,
+ mbstate_t *ps)
+{
+ return
+# if @GNULIB_MBSNRTOWCS@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ mbsnrtowcs ((wchar_t *) dest, srcp, srclen, len, ps);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (mbsnrtoc32s, size_t,
+ (char32_t *dest, const char **srcp, size_t srclen, size_t len,
+ mbstate_t *ps)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (mbsnrtoc32s, size_t,
+ (char32_t *dest, const char **srcp, size_t srclen, size_t len,
+ mbstate_t *ps));
+_GL_CXXALIASWARN (mbsnrtoc32s);
+#endif
+
+
+/* Convert a string to a 32-bit wide string. */
+#if @GNULIB_MBSRTOC32S@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_MBSRTOC32S
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) size_t
+mbsrtoc32s (char32_t *dest, const char **srcp, size_t len, mbstate_t *ps)
+{
+ return
+# if @GNULIB_MBSRTOWCS@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ mbsrtowcs ((wchar_t *) dest, srcp, len, ps);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (mbsrtoc32s, size_t,
+ (char32_t *dest, const char **srcp, size_t len, mbstate_t *ps)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (mbsrtoc32s, size_t,
+ (char32_t *dest, const char **srcp, size_t len,
+ mbstate_t *ps));
+_GL_CXXALIASWARN (mbsrtoc32s);
+#endif
+
+
+/* Convert a string to a 32-bit wide string. */
+#if @GNULIB_MBSTOC32S@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_MBSTOC32S
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) size_t
+mbstoc32s (char32_t *dest, const char *src, size_t len)
+{
+ mbstate_t state;
+
+ mbszero (&state);
+ return mbsrtoc32s (dest, &src, len, &state);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (mbstoc32s, size_t,
+ (char32_t *dest, const char *src, size_t len)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (mbstoc32s, size_t,
+ (char32_t *dest, const char *src, size_t len));
+_GL_CXXALIASWARN (mbstoc32s);
+#endif
+
+
+#if @GNULIB_C32_GET_TYPE_TEST@ || @GNULIB_C32_APPLY_TYPE_TEST@
+/* A scalar type. Instances of this type, other than (c32_type_test_t) 0,
+ represent a character property, sometimes also viewed as a "character class".
+ It can be applied to 32-bit wide characters. It is the counterpart of
+ type 'wctype_t' for wide characters.
+ To test whether a given character has a certain property, use the function
+ 'c32_apply_type_test'. */
+# if _GL_WCHAR_T_IS_UCS4
+typedef wctype_t c32_type_test_t;
+# else
+typedef /*bool*/int (*c32_type_test_t) (wint_t wc);
+# endif
+#endif
+
+/* Return a character property with the given name, or (c32_type_test_t) 0
+ if the designated property does not exist.
+ This function is the counterpart of function 'wctype' for wide characters.
+ */
+#if @GNULIB_C32_GET_TYPE_TEST@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32_GET_TYPE_TEST
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((1)) c32_type_test_t
+c32_get_type_test (const char *name)
+{
+ return
+# if @GNULIB_WCTYPE@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wctype (name);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32_get_type_test, c32_type_test_t, (const char *name)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (c32_get_type_test, c32_type_test_t, (const char *name));
+_GL_CXXALIASWARN (c32_get_type_test);
+#endif
+
+/* Test whether a given 32-bit wide character has the specified character
+ property.
+ Return non-zero if true, zero if false or if the argument is WEOF.
+ This function is the counterpart of function 'iswctype' for wide characters.
+ */
+#if @GNULIB_C32_APPLY_TYPE_TEST@
+# if _GL_WCHAR_T_IS_UCS4
+# if !defined IN_C32_APPLY_TYPE_TEST
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE int
+c32_apply_type_test (wint_t wc, c32_type_test_t property)
+{
+ return
+# if @GNULIB_ISWCTYPE@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ iswctype (wc, property);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32_apply_type_test, int,
+ (wint_t wc, c32_type_test_t property));
+# endif
+# else
+_GL_FUNCDECL_SYS (c32_apply_type_test, int,
+ (wint_t wc, c32_type_test_t property)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (c32_apply_type_test, int,
+ (wint_t wc, c32_type_test_t property));
+_GL_CXXALIASWARN (c32_apply_type_test);
+#endif
+
+
+#if @GNULIB_C32_GET_MAPPING@ || @GNULIB_C32_APPLY_MAPPING@
+/* A scalar type. Instances of this type, other than (c32_mapping_t) 0,
+ represent a character mapping. It can be applied to 32-bit wide characters.
+ It is the counterpart of type 'wctrans_t' for wide characters.
+ To apply a certain mapping to a given character, use the function
+ 'c32_apply_mapping'. */
+# if _GL_WCHAR_T_IS_UCS4
+typedef wctrans_t c32_mapping_t;
+# else
+typedef wint_t (*c32_mapping_t) (wint_t wc);
+# endif
+#endif
+
+/* Return a character mapping with the given name, or (c32_mapping_t) 0
+ if the designated mapping does not exist.
+ This function is the counterpart of function 'wctrans' for wide characters.
+ */
+#if @GNULIB_C32_GET_MAPPING@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32_GET_MAPPING
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((1)) c32_mapping_t
+c32_get_mapping (const char *name)
+{
+ return
+# if @GNULIB_WCTRANS@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ wctrans (name);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32_get_mapping, c32_mapping_t, (const char *name)
+ _GL_ARG_NONNULL ((1)));
+# endif
+_GL_CXXALIAS_SYS (c32_get_mapping, c32_mapping_t, (const char *name));
+_GL_CXXALIASWARN (c32_get_mapping);
+#endif
+
+/* Apply the specified character mapping to a given 32-bit wide character.
+ Return the result of this mapping. Return the WC argument unchanged if it is
+ WEOF.
+ This function is the counterpart of function 'towctrans' for wide characters.
+ */
+#if @GNULIB_C32_APPLY_MAPPING@
+# if _GL_WCHAR_T_IS_UCS4 && !defined IN_C32_APPLY_MAPPING
+_GL_BEGIN_C_LINKAGE
+_GL_INLINE _GL_ARG_NONNULL ((2)) wint_t
+c32_apply_mapping (wint_t wc, c32_mapping_t mapping)
+{
+ return
+# if @GNULIB_TOWCTRANS@ && defined __cplusplus && defined GNULIB_NAMESPACE
+ GNULIB_NAMESPACE::
+# endif
+ towctrans (wc, mapping);
+}
+_GL_END_C_LINKAGE
+# else
+_GL_FUNCDECL_SYS (c32_apply_mapping, wint_t,
+ (wint_t wc, c32_mapping_t mapping)
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (c32_apply_mapping, wint_t,
+ (wint_t wc, c32_mapping_t mapping));
+_GL_CXXALIASWARN (c32_apply_mapping);
+#endif
+
+
+_GL_INLINE_HEADER_END
+
+#endif /* _@GUARD_PREFIX@_UCHAR_H */
+#endif /* _@GUARD_PREFIX@_UCHAR_H */