82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
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Copyright (C) 2007, 2009 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Eric Blake. */
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/*
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* ISO C 99 <wchar.h> for platforms that have issues.
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* <http://www.opengroup.org/susv3xbd/wchar.h.html>
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*
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* For now, this just ensures proper prerequisite inclusion order and
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* the declaration of wcwidth().
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*/
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#ifndef _GL_WCHAR_H
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/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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included before <wchar.h>. */
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#include <stddef.h>
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#include <stdio.h>
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#include <time.h>
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/* Include the original <wchar.h> if it exists.
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Some builds of uClibc lack it. */
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/* The include_next requires a split double-inclusion guard. */
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#if @HAVE_WCHAR_H@
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# @INCLUDE_NEXT@ @NEXT_WCHAR_H@
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#endif
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#ifndef _GL_WCHAR_H
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#define _GL_WCHAR_H
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/* The definition of GL_LINK_WARNING is copied here. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Return the number of screen columns needed for WC. */
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#if @GNULIB_WCWIDTH@
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# if @REPLACE_WCWIDTH@
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# undef wcwidth
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# define wcwidth rpl_wcwidth
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extern int wcwidth (wchar_t);
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# else
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# if !defined wcwidth && !@HAVE_DECL_WCWIDTH@
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/* wcwidth exists but is not declared. */
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extern int wcwidth (int /* actually wchar_t */);
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# endif
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# endif
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#elif defined GNULIB_POSIXCHECK
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# undef wcwidth
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# define wcwidth(w) \
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(GL_LINK_WARNING ("wcwidth is unportable - " \
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"use gnulib module wcwidth for portability"), \
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wcwidth (w))
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GL_WCHAR_H */
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#endif /* _GL_WCHAR_H */
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