| /* A substitute for ISO C99 <wchar.h>, for platforms that have issues. |
| |
| Copyright (C) 2007 Free Software Foundation, Inc. |
| |
| 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, 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, write to the Free Software Foundation, |
| Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ |
| |
| /* Written by Eric Blake. */ |
| |
| /* |
| * ISO C 99 <wchar.h> for platforms that have issues. |
| * <http://www.opengroup.org/susv3xbd/wchar.h.html> |
| * |
| * For now, this just ensures proper prerequisite inclusion order and |
| * the declaration of wcwidth(). |
| */ |
| |
| #ifndef _GL_WCHAR_H |
| |
| /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
| <wchar.h>. |
| BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be |
| included before <wchar.h>. */ |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <time.h> |
| |
| /* Include the original <wchar.h> if it exists. |
| Some builds of uClibc lack it. */ |
| /* The include_next requires a split double-inclusion guard. */ |
| #if @HAVE_WCHAR_H@ |
| # @INCLUDE_NEXT@ @NEXT_WCHAR_H@ |
| #endif |
| |
| #ifndef _GL_WCHAR_H |
| #define _GL_WCHAR_H |
| |
| /* The definition of GL_LINK_WARNING is copied here. */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| /* Return the number of screen columns needed for WC. */ |
| #if @GNULIB_WCWIDTH@ |
| # if @REPLACE_WCWIDTH@ |
| # undef wcwidth |
| # define wcwidth rpl_wcwidth |
| extern int wcwidth (wchar_t); |
| # else |
| # if !defined wcwidth && !@HAVE_DECL_WCWIDTH@ |
| /* wcwidth exists but is not declared. */ |
| extern int wcwidth (int /* actually wchar_t */); |
| # endif |
| # endif |
| #elif defined GNULIB_POSIXCHECK |
| # undef wcwidth |
| # define wcwidth(w) \ |
| (GL_LINK_WARNING ("wcwidth is unportable - " \ |
| "use gnulib module wcwidth for portability"), \ |
| wcwidth (w)) |
| #endif |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _GL_WCHAR_H */ |
| #endif /* _GL_WCHAR_H */ |