+
−/* Determine the number of screen columns needed for a character.
+
−   Copyright (C) 2006 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 2, 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.  */
+
−
+
−#ifndef _gl_WCWIDTH_H
+
−#define _gl_WCWIDTH_H
+
−
+
−#if HAVE_WCHAR_T
+
−
+
−/* Get wcwidth if available, along with wchar_t.  */
+
−# if HAVE_WCHAR_H
+
−/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+
−   <wchar.h>.
+
−   BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
+
−   <wchar.h>.  */
+
−#  include <stdio.h>
+
−#  include <time.h>
+
−#  include <wchar.h>
+
−# endif
+
−
+
−/* Get iswprint.  */
+
−# if HAVE_WCTYPE_H
+
−#  include <wctype.h>
+
−# endif
+
−# if !defined iswprint && !HAVE_ISWPRINT
+
−#  define iswprint(wc) 1
+
−# endif
+
−
+
−# ifndef HAVE_DECL_WCWIDTH
+
−"this configure-time declaration test was not run"
+
−# endif
+
−# ifndef wcwidth
+
−#  if !HAVE_WCWIDTH
+
−
+
−/* wcwidth doesn't exist, so assume all printable characters have
+
−   width 1.  */
+
−static inline int
+
−wcwidth (wchar_t wc)
+
−{
+
−  return wc == 0 ? 0 : iswprint (wc) ? 1 : -1;
+
−}
+
−
+
−#  elif !HAVE_DECL_WCWIDTH
+
−
+
−/* wcwidth exists but is not declared.  */
+
−extern
+
−#   ifdef __cplusplus
+
−"C"
+
−#   endif
+
−int wcwidth (int /* actually wchar_t */);
+
−
+
−#  endif
+
−# endif
+
−
+
−#endif /* HAVE_WCHAR_H */
+
−
+
−#endif /* _gl_WCWIDTH_H */