* lib/ctype.in.h: (isxdigit_l): New declaration.
* lib/isxdigit_l.c: New file.
* m4/isxdigit_l.m4: New file.
* m4/ctype_h.m4 (gl_CTYPE_H): Test for isxdigit_l.
(gl_CTYPE_H_REQUIRE_DEFAULTS): Initialize GNULIB_ISXDIGIT_L.
(gl_CTYPE_H_DEFAULTS): Initialize HAVE_ISXDIGIT_L.
* modules/ctype-h (Makefile.am): Substitute GNULIB_ISXDIGIT_L,
HAVE_ISXDIGIT_L.
* modules/isxdigit_l: New file.
* tests/test-ctype-h-c++.cc: Check declaration of isxdigit_l.
* doc/posix-functions/isxdigit_l.texi: Mention the new module.
+2025-02-15 Bruno Haible <bruno@clisp.org>
+
+ isxdigit_l: New module.
+ * lib/ctype.in.h: (isxdigit_l): New declaration.
+ * lib/isxdigit_l.c: New file.
+ * m4/isxdigit_l.m4: New file.
+ * m4/ctype_h.m4 (gl_CTYPE_H): Test for isxdigit_l.
+ (gl_CTYPE_H_REQUIRE_DEFAULTS): Initialize GNULIB_ISXDIGIT_L.
+ (gl_CTYPE_H_DEFAULTS): Initialize HAVE_ISXDIGIT_L.
+ * modules/ctype-h (Makefile.am): Substitute GNULIB_ISXDIGIT_L,
+ HAVE_ISXDIGIT_L.
+ * modules/isxdigit_l: New file.
+ * tests/test-ctype-h-c++.cc: Check declaration of isxdigit_l.
+ * doc/posix-functions/isxdigit_l.texi: Mention the new module.
+
2025-02-15 Bruno Haible <bruno@clisp.org>
isupper_l: Add tests.
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/isxdigit_l.html}
-Gnulib module: ---
+Gnulib module: isxdigit_l
+@mindex isxdigit_l
Portability problems fixed by Gnulib:
@itemize
+@item
+This function is missing on many platforms:
+FreeBSD 9.0, NetBSD 6.1, OpenBSD 6.1, Minix 3.1.8, AIX 6.1, HP-UX 11, Solaris 11.3, Cygwin 2.5.x, mingw, MSVC 14, Android 4.4.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
-@item
-This function is missing on many platforms:
-FreeBSD 6.0, NetBSD 5.0, OpenBSD 6.0, Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 11.3, Cygwin 1.7.x, mingw, MSVC 14, Android 4.4.
@end itemize
#if (@GNULIB_ISALNUM_L@ || @GNULIB_ISALPHA_L@ || @GNULIB_ISBLANK_L@ \
|| @GNULIB_ISCNTRL_L@ || @GNULIB_ISDIGIT_L@ || @GNULIB_ISGRAPH_L@ \
|| @GNULIB_ISLOWER_L@ || @GNULIB_ISPRINT_L@ || @GNULIB_ISPUNCT_L@ \
- || @GNULIB_ISSPACE_L@ || @GNULIB_ISUPPER_L@)
+ || @GNULIB_ISSPACE_L@ || @GNULIB_ISUPPER_L@ || @GNULIB_ISXDIGIT_L@)
/* Get locale_t. */
# include <locale.h>
#endif
# endif
#endif
+/* Return non-zero if c is a hexadecimal digit. */
+#if @GNULIB_ISXDIGIT_L@
+# if !@HAVE_ISXDIGIT_L@
+_GL_FUNCDECL_SYS (isxdigit_l, int, (int c, locale_t locale),
+ _GL_ARG_NONNULL ((2)));
+# endif
+_GL_CXXALIAS_SYS (isxdigit_l, int, (int c, locale_t locale));
+# if __GLIBC__ >= 2
+_GL_CXXALIASWARN (isxdigit_l);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef isxdigit_l
+# if HAVE_RAW_DECL_ISXDIGIT_L
+_GL_WARN_ON_USE (isxdigit_l, "isxdigit_l is unportable - "
+ "use gnulib module isxdigit_l for portability");
+# endif
+#endif
+
#endif /* _@GUARD_PREFIX@_CTYPE_H */
#endif
#endif /* _@GUARD_PREFIX@_CTYPE_H */
--- /dev/null
+/* Test whether a single-byte character is a hexadecimal digit.
+ Copyright (C) 2025 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>, 2025. */
+
+#include <config.h>
+
+/* Specification. */
+#include <ctype.h>
+
+int
+isxdigit_l (int c, _GL_UNUSED locale_t locale)
+{
+ /* For consistency with isxdigit(), which is not locale dependent
+ (see ISO C23 ยง 7.4.2.12). */
+ return ((c >= '0' && c <= '9')
+#if 'A' == 0x41 && 'a' == 0x61
+ /* Optimization, assuming ASCII */
+ || ((c & ~0x20) >= 'A' && (c & ~0x20) <= 'F')
+#else
+ || (c >= 'A' && c <= 'F') || (c >= 'a' && c <= 'f')
+#endif
+ );
+}
# ctype_h.m4
-# serial 20
+# serial 21
dnl Copyright (C) 2009-2025 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[#include <ctype.h>
]], [isalnum_l isalpha_l isblank isblank_l iscntrl_l isdigit_l isgraph_l
- islower_l isprint_l ispunct_l isspace_l isupper_l])
+ islower_l isprint_l ispunct_l isspace_l isupper_l isxdigit_l])
])
# gl_CTYPE_MODULE_INDICATOR([modulename])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISPUNCT_L])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISSPACE_L])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISUPPER_L])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISXDIGIT_L])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
HAVE_ISPUNCT_L=1; AC_SUBST([HAVE_ISPUNCT_L])
HAVE_ISSPACE_L=1; AC_SUBST([HAVE_ISSPACE_L])
HAVE_ISUPPER_L=1; AC_SUBST([HAVE_ISUPPER_L])
+ HAVE_ISXDIGIT_L=1; AC_SUBST([HAVE_ISXDIGIT_L])
])
--- /dev/null
+# isxdigit_l.m4
+# serial 1
+dnl Copyright (C) 2009-2025 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+dnl This file is offered as-is, without any warranty.
+
+AC_DEFUN([gl_FUNC_ISXDIGIT_L],
+[
+ AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
+
+ dnl Persuade glibc <ctype.h> to declare isxdigit_l().
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ AC_CHECK_FUNCS_ONCE([isxdigit_l])
+ if test $ac_cv_func_isxdigit_l = no; then
+ HAVE_ISXDIGIT_L=0
+ fi
+])
-e 's/@''GNULIB_ISPUNCT_L''@/$(GNULIB_ISPUNCT_L)/g' \
-e 's/@''GNULIB_ISSPACE_L''@/$(GNULIB_ISSPACE_L)/g' \
-e 's/@''GNULIB_ISUPPER_L''@/$(GNULIB_ISUPPER_L)/g' \
+ -e 's/@''GNULIB_ISXDIGIT_L''@/$(GNULIB_ISXDIGIT_L)/g' \
-e 's/@''HAVE_ISALNUM_L''@/$(HAVE_ISALNUM_L)/g' \
-e 's/@''HAVE_ISALPHA_L''@/$(HAVE_ISALPHA_L)/g' \
-e 's/@''HAVE_ISBLANK''@/$(HAVE_ISBLANK)/g' \
-e 's/@''HAVE_ISPUNCT_L''@/$(HAVE_ISPUNCT_L)/g' \
-e 's/@''HAVE_ISSPACE_L''@/$(HAVE_ISSPACE_L)/g' \
-e 's/@''HAVE_ISUPPER_L''@/$(HAVE_ISUPPER_L)/g' \
+ -e 's/@''HAVE_ISXDIGIT_L''@/$(HAVE_ISXDIGIT_L)/g' \
-e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
-e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
$(srcdir)/ctype.in.h > $@-t
--- /dev/null
+Description:
+isxdigit_l() function: test whether a single-byte character is a hexadecimal digit.
+
+Files:
+lib/isxdigit_l.c
+m4/isxdigit_l.m4
+
+Depends-on:
+ctype-h
+locale-h
+extensions
+
+configure.ac:
+gl_FUNC_ISXDIGIT_L
+gl_CONDITIONAL([GL_COND_OBJ_ISXDIGIT_L], [test $HAVE_ISXDIGIT_L = 0])
+gl_MODULE_INDICATOR([isxdigit_l])
+gl_CTYPE_MODULE_INDICATOR([isxdigit_l])
+
+Makefile.am:
+if GL_COND_OBJ_ISXDIGIT_L
+lib_SOURCES += isxdigit_l.c
+endif
+
+Include:
+<ctype.h>
+
+License:
+LGPLv2+
+
+Maintainer:
+all
SIGNATURE_CHECK (GNULIB_NAMESPACE::isupper_l, int, (int, locale_t));
#endif
+#if GNULIB_TEST_ISXDIGIT_L
+SIGNATURE_CHECK (GNULIB_NAMESPACE::isxdigit_l, int, (int, locale_t));
+#endif
+
int
main ()