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-rw-r--r--gl/wcwidth.h57
1 files changed, 0 insertions, 57 deletions
diff --git a/gl/wcwidth.h b/gl/wcwidth.h
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1/* Determine the number of screen columns needed for a character.
2 Copyright (C) 2006, 2007 Free Software Foundation, Inc.
3
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)
7 any later version.
8
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.
13
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. */
17
18#ifndef _gl_WCWIDTH_H
19#define _gl_WCWIDTH_H
20
21#if HAVE_WCHAR_T
22
23/* Get wcwidth if available, along with wchar_t. */
24# include <wchar.h>
25
26/* Get iswprint. */
27# include <wctype.h>
28
29# ifndef HAVE_DECL_WCWIDTH
30"this configure-time declaration test was not run"
31# endif
32# ifndef wcwidth
33# if !HAVE_WCWIDTH
34
35/* wcwidth doesn't exist, so assume all printable characters have
36 width 1. */
37static inline int
38wcwidth (wchar_t wc)
39{
40 return wc == 0 ? 0 : iswprint (wc) ? 1 : -1;
41}
42
43# elif !HAVE_DECL_WCWIDTH
44
45/* wcwidth exists but is not declared. */
46extern
47# ifdef __cplusplus
48"C"
49# endif
50int wcwidth (int /* actually wchar_t */);
51
52# endif
53# endif
54
55#endif /* HAVE_WCHAR_T */
56
57#endif /* _gl_WCWIDTH_H */