* modules/wmemcmp: New file.
* lib/wchar.in.h (wmemcmp): New declaration.
* lib/wmemcmp.c: New file.
* lib/wmemcmp-impl.h: New file, from libutf8 with modifications.
* m4/wmemcmp.m4: New file.
* m4/wchar_h.m4 (gl_WCHAR_H): Test whether wmemcmp is declared.
(gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WMEMCMP, HAVE_WMEMCMP.
* modules/wchar (Makefile.am): Substitute GNULIB_WMEMCMP, HAVE_WMEMCMP.
* tests/test-wchar-c++.cc: Test the declaration of wmemcmp.
* doc/posix-functions/wmemcmp.texi: Mention the new module.
+2011-02-05 Bruno Haible <bruno@clisp.org>
+
+ New module 'wmemcmp'.
+ * modules/wmemcmp: New file.
+ * lib/wchar.in.h (wmemcmp): New declaration.
+ * lib/wmemcmp.c: New file.
+ * lib/wmemcmp-impl.h: New file, from libutf8 with modifications.
+ * m4/wmemcmp.m4: New file.
+ * m4/wchar_h.m4 (gl_WCHAR_H): Test whether wmemcmp is declared.
+ (gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WMEMCMP, HAVE_WMEMCMP.
+ * modules/wchar (Makefile.am): Substitute GNULIB_WMEMCMP, HAVE_WMEMCMP.
+ * tests/test-wchar-c++.cc: Test the declaration of wmemcmp.
+ * doc/posix-functions/wmemcmp.texi: Mention the new module.
+
2011-02-07 Jim Meyering <meyering@redhat.com>
di-set, ino-map: new modules, from coreutils
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/wmemcmp.html}
-Gnulib module: ---
+Gnulib module: wmemcmp
Portability problems fixed by Gnulib:
@itemize
+@item
+This function is missing on some platforms:
+HP-UX 11.00, IRIX 6.5, Solaris 2.6, Interix 3.5.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
-This function is missing on some platforms:
-HP-UX 11.00, IRIX 6.5, Solaris 2.6, Interix 3.5.
-@item
On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize
#endif
+/* Compare N wide characters of S1 and S2. */
+#if @GNULIB_WMEMCMP@
+# if !@HAVE_WMEMCMP@
+_GL_FUNCDECL_SYS (wmemcmp, int,
+ (const wchar_t *s1, const wchar_t *s2, size_t n));
+# endif
+_GL_CXXALIAS_SYS (wmemcmp, int,
+ (const wchar_t *s1, const wchar_t *s2, size_t n));
+_GL_CXXALIASWARN (wmemcmp);
+#elif defined GNULIB_POSIXCHECK
+# undef wmemcmp
+# if HAVE_RAW_DECL_WMEMCMP
+_GL_WARN_ON_USE (wmemcmp, "wmemcmp is unportable - "
+ "use gnulib module wmemcmp for portability");
+# endif
+#endif
+
+
#endif /* _GL_WCHAR_H */
#endif /* _GL_WCHAR_H */
#endif
--- /dev/null
+/* Compare wide character arrays.
+ Copyright (C) 1999, 2011 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 1999.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+int
+wmemcmp (const wchar_t *s1, const wchar_t *s2, size_t n)
+{
+ for (; n > 0;)
+ {
+ wchar_t wc1 = *s1++;
+ wchar_t wc2 = *s2++;
+ if (wc1 == wc2)
+ {
+ n--;
+ continue;
+ }
+ /* Note that wc1 and wc2 each have at most 31 bits. */
+ return (int)wc1 - (int)wc2;
+ /* > 0 if wc1 > wc2, < 0 if wc1 < wc2. */
+ }
+ return 0;
+}
--- /dev/null
+/* Compare wide character arrays.
+ Copyright (C) 2011 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <wchar.h>
+
+#include "wmemcmp-impl.h"
#include <wchar.h>
]],
[btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
- wcsrtombs wcsnrtombs wcwidth wmemchr
+ wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp
])
])
GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH])
GNULIB_WMEMCHR=0; AC_SUBST([GNULIB_WMEMCHR])
+ GNULIB_WMEMCMP=0; AC_SUBST([GNULIB_WMEMCMP])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC])
HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT])
HAVE_WCSRTOMBS=1; AC_SUBST([HAVE_WCSRTOMBS])
HAVE_WCSNRTOMBS=1; AC_SUBST([HAVE_WCSNRTOMBS])
HAVE_WMEMCHR=1; AC_SUBST([HAVE_WMEMCHR])
+ HAVE_WMEMCMP=1; AC_SUBST([HAVE_WMEMCMP])
HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB])
HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH])
REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T])
--- /dev/null
+# wmemcmp.m4 serial 1
+dnl Copyright (C) 2011 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.
+
+AC_DEFUN([gl_FUNC_WMEMCMP],
+[
+ AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
+ AC_CHECK_FUNCS_ONCE([wmemcmp])
+ if test $ac_cv_func_wmemcmp = no; then
+ HAVE_WMEMCMP=0
+ AC_LIBOBJ([wmemcmp])
+ fi
+])
-e 's|@''GNULIB_WCSNRTOMBS''@|$(GNULIB_WCSNRTOMBS)|g' \
-e 's|@''GNULIB_WCWIDTH''@|$(GNULIB_WCWIDTH)|g' \
-e 's|@''GNULIB_WMEMCHR''@|$(GNULIB_WMEMCHR)|g' \
+ -e 's|@''GNULIB_WMEMCMP''@|$(GNULIB_WMEMCMP)|g' \
-e 's|@''HAVE_WINT_T''@|$(HAVE_WINT_T)|g' \
-e 's|@''HAVE_BTOWC''@|$(HAVE_BTOWC)|g' \
-e 's|@''HAVE_MBSINIT''@|$(HAVE_MBSINIT)|g' \
-e 's|@''HAVE_WCSRTOMBS''@|$(HAVE_WCSRTOMBS)|g' \
-e 's|@''HAVE_WCSNRTOMBS''@|$(HAVE_WCSNRTOMBS)|g' \
-e 's|@''HAVE_WMEMCHR''@|$(HAVE_WMEMCHR)|g' \
+ -e 's|@''HAVE_WMEMCMP''@|$(HAVE_WMEMCMP)|g' \
-e 's|@''HAVE_DECL_WCTOB''@|$(HAVE_DECL_WCTOB)|g' \
-e 's|@''HAVE_DECL_WCWIDTH''@|$(HAVE_DECL_WCWIDTH)|g' \
-e 's|@''REPLACE_MBSTATE_T''@|$(REPLACE_MBSTATE_T)|g' \
--- /dev/null
+Description:
+wmemcmp() function: compare wide character arrays.
+
+Files:
+lib/wmemcmp.c
+lib/wmemcmp-impl.h
+m4/wmemcmp.m4
+
+Depends-on:
+wchar
+
+configure.ac:
+gl_FUNC_WMEMCMP
+gl_WCHAR_MODULE_INDICATOR([wmemcmp])
+
+Makefile.am:
+
+Include:
+<wchar.h>
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
(const wchar_t *, wchar_t, size_t));
#endif
+#if GNULIB_TEST_WMEMCMP
+SIGNATURE_CHECK (GNULIB_NAMESPACE::wmemcmp, int,
+ (const wchar_t *, const wchar_t *, size_t));
+#endif
+
int
main ()
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