1 /* Determine the number of screen columns needed for a character.
2 Copyright (C) 2006 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
23 /* Get wcwidth if available, along with wchar_t. */
25 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
27 BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
38 # if !defined iswprint && !HAVE_ISWPRINT
42 return (wc >= 0 && wc < 128
43 ? wc >= ' ' && wc <= '~'
46 # define iswprint iswprint
49 # ifndef HAVE_DECL_WCWIDTH
50 "this configure-time declaration test was not run"
55 /* wcwidth doesn't exist, so assume all printable characters have
60 return wc == 0 ? 0 : iswprint (wc) ? 1 : -1;
63 # elif !HAVE_DECL_WCWIDTH
65 /* wcwidth exists but is not declared. */
70 int wcwidth (int /* actually wchar_t */);
75 #endif /* HAVE_WCHAR_H */
77 #endif /* _gl_WCWIDTH_H */