# HG changeset patch # User Bruno Haible # Date 1296964069 -3600 # Node ID 0da9f0fe36fe85bdca6b1a45db7ea30e967b6c97 # Parent b5843d4d84418b1065de7b32e63c26e42d41b595 New module 'wcsncmp'. * modules/wcsncmp: New file. * lib/wchar.in.h (wcsncmp): New declaration. * lib/wcsncmp.c: New file. * lib/wcsncmp-impl.h: New file, from libutf8 with modifications. * m4/wcsncmp.m4: New file. * m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcsncmp is declared. (gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSNCMP, HAVE_WCSNCMP. * modules/wchar (Makefile.am): Substitute GNULIB_WCSNCMP, HAVE_WCSNCMP. * tests/test-wchar-c++.cc: Test the declaration of wcsncmp. * doc/posix-functions/wcsncmp.texi: Mention the new module. diff --git a/ChangeLog b/ChangeLog --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,17 @@ +2011-02-05 Bruno Haible + + New module 'wcsncmp'. + * modules/wcsncmp: New file. + * lib/wchar.in.h (wcsncmp): New declaration. + * lib/wcsncmp.c: New file. + * lib/wcsncmp-impl.h: New file, from libutf8 with modifications. + * m4/wcsncmp.m4: New file. + * m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcsncmp is declared. + (gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSNCMP, HAVE_WCSNCMP. + * modules/wchar (Makefile.am): Substitute GNULIB_WCSNCMP, HAVE_WCSNCMP. + * tests/test-wchar-c++.cc: Test the declaration of wcsncmp. + * doc/posix-functions/wcsncmp.texi: Mention the new module. + 2011-02-05 Bruno Haible New module 'wcscmp'. diff --git a/doc/posix-functions/wcsncmp.texi b/doc/posix-functions/wcsncmp.texi --- a/doc/posix-functions/wcsncmp.texi +++ b/doc/posix-functions/wcsncmp.texi @@ -4,18 +4,18 @@ POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/wcsncmp.html} -Gnulib module: --- +Gnulib module: wcsncmp Portability problems fixed by Gnulib: @itemize +@item +This function is missing on some platforms: +IRIX 5.3, Solaris 2.5.1. @end itemize Portability problems not fixed by Gnulib: @itemize @item -This function is missing on some platforms: -IRIX 5.3, Solaris 2.5.1. -@item On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot accommodate all Unicode characters. @end itemize diff --git a/lib/wchar.in.h b/lib/wchar.in.h --- a/lib/wchar.in.h +++ b/lib/wchar.in.h @@ -668,6 +668,24 @@ #endif +/* Compare no more than N wide characters of S1 and S2. */ +#if @GNULIB_WCSNCMP@ +# if !@HAVE_WCSNCMP@ +_GL_FUNCDECL_SYS (wcsncmp, int, + (const wchar_t *s1, const wchar_t *s2, size_t n)); +# endif +_GL_CXXALIAS_SYS (wcsncmp, int, + (const wchar_t *s1, const wchar_t *s2, size_t n)); +_GL_CXXALIASWARN (wcsncmp); +#elif defined GNULIB_POSIXCHECK +# undef wcsncmp +# if HAVE_RAW_DECL_WCSNCMP +_GL_WARN_ON_USE (wcsncmp, "wcsncmp is unportable - " + "use gnulib module wcsncmp for portability"); +# endif +#endif + + #endif /* _GL_WCHAR_H */ #endif /* _GL_WCHAR_H */ #endif diff --git a/lib/wcsncmp-impl.h b/lib/wcsncmp-impl.h new file mode 100644 --- /dev/null +++ b/lib/wcsncmp-impl.h @@ -0,0 +1,36 @@ +/* Compare two wide strings. + Copyright (C) 1999, 2011 Free Software Foundation, Inc. + Written by Bruno Haible , 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 . */ + +int +wcsncmp (const wchar_t *s1, const wchar_t *s2, size_t n) +{ + for (; n > 0;) + { + wchar_t wc1 = *s1++; + wchar_t wc2 = *s2++; + if (wc1 != (wchar_t)'\0' && 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, + = 0 if wc1 and wc2 are both '\0'. */ + } + return 0; +} diff --git a/lib/wcsncmp.c b/lib/wcsncmp.c new file mode 100644 --- /dev/null +++ b/lib/wcsncmp.c @@ -0,0 +1,23 @@ +/* Compare two wide strings. + Copyright (C) 2011 Free Software Foundation, Inc. + Written by Bruno Haible , 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 . */ + +#include + +/* Specification. */ +#include + +#include "wcsncmp-impl.h" diff --git a/m4/wchar_h.m4 b/m4/wchar_h.m4 --- a/m4/wchar_h.m4 +++ b/m4/wchar_h.m4 @@ -52,6 +52,7 @@ [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp + wcsncmp ]) ]) @@ -160,6 +161,7 @@ GNULIB_WCSCAT=0; AC_SUBST([GNULIB_WCSCAT]) GNULIB_WCSNCAT=0; AC_SUBST([GNULIB_WCSNCAT]) GNULIB_WCSCMP=0; AC_SUBST([GNULIB_WCSCMP]) + GNULIB_WCSNCMP=0; AC_SUBST([GNULIB_WCSNCMP]) dnl Assume proper GNU behavior unless another module says otherwise. HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC]) HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT]) @@ -184,6 +186,7 @@ HAVE_WCSCAT=1; AC_SUBST([HAVE_WCSCAT]) HAVE_WCSNCAT=1; AC_SUBST([HAVE_WCSNCAT]) HAVE_WCSCMP=1; AC_SUBST([HAVE_WCSCMP]) + HAVE_WCSNCMP=1; AC_SUBST([HAVE_WCSNCMP]) 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]) diff --git a/m4/wcsncmp.m4 b/m4/wcsncmp.m4 new file mode 100644 --- /dev/null +++ b/m4/wcsncmp.m4 @@ -0,0 +1,15 @@ +# wcsncmp.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_WCSNCMP], +[ + AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) + AC_CHECK_FUNCS_ONCE([wcsncmp]) + if test $ac_cv_func_wcsncmp = no; then + HAVE_WCSNCMP=0 + AC_LIBOBJ([wcsncmp]) + fi +]) diff --git a/modules/wchar b/modules/wchar --- a/modules/wchar +++ b/modules/wchar @@ -55,6 +55,7 @@ -e 's|@''GNULIB_WCSCAT''@|$(GNULIB_WCSCAT)|g' \ -e 's|@''GNULIB_WCSNCAT''@|$(GNULIB_WCSNCAT)|g' \ -e 's|@''GNULIB_WCSCMP''@|$(GNULIB_WCSCMP)|g' \ + -e 's|@''GNULIB_WCSNCMP''@|$(GNULIB_WCSNCMP)|g' \ -e 's|@''HAVE_WINT_T''@|$(HAVE_WINT_T)|g' \ -e 's|@''HAVE_BTOWC''@|$(HAVE_BTOWC)|g' \ -e 's|@''HAVE_MBSINIT''@|$(HAVE_MBSINIT)|g' \ @@ -79,6 +80,7 @@ -e 's|@''HAVE_WCSCAT''@|$(HAVE_WCSCAT)|g' \ -e 's|@''HAVE_WCSNCAT''@|$(HAVE_WCSNCAT)|g' \ -e 's|@''HAVE_WCSCMP''@|$(HAVE_WCSCMP)|g' \ + -e 's|@''HAVE_WCSNCMP''@|$(HAVE_WCSNCMP)|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' \ diff --git a/modules/wcsncmp b/modules/wcsncmp new file mode 100644 --- /dev/null +++ b/modules/wcsncmp @@ -0,0 +1,31 @@ +Description: +wcsncmp() function: compare two wide strings. + +Status: +obsolete + +Notice: +This module is obsolete. + +Files: +lib/wcsncmp.c +lib/wcsncmp-impl.h +m4/wcsncmp.m4 + +Depends-on: +wchar + +configure.ac: +gl_FUNC_WCSNCMP +gl_WCHAR_MODULE_INDICATOR([wcsncmp]) + +Makefile.am: + +Include: + + +License: +LGPL + +Maintainer: +Bruno Haible diff --git a/tests/test-wchar-c++.cc b/tests/test-wchar-c++.cc --- a/tests/test-wchar-c++.cc +++ b/tests/test-wchar-c++.cc @@ -143,6 +143,11 @@ (const wchar_t *, const wchar_t *)); #endif +#if GNULIB_TEST_WCSNCMP +SIGNATURE_CHECK (GNULIB_NAMESPACE::wcsncmp, int, + (const wchar_t *, const wchar_t *, size_t)); +#endif + int main ()