1 /* wcswidth.c - compute display width of wide character string */
2 
3 /* Copyright (C) 2010 Free Software Foundation, Inc.
4 
5    This file is part of GNU Bash, the Bourne Again SHell.
6 
7    Bash is free software: you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation, either version 3 of the License, or
10    (at your option) any later version.
11 
12    Bash is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with Bash.  If not, see <http://www.gnu.org/licenses/>.
19 */
20 
21 #include <config.h>
22 
23 #if defined (HANDLE_MULTIBYTE) && !defined (HAVE_WCSWIDTH)
24 
25 #include <stdc.h>
26 #include <wchar.h>
27 #include <bashansi.h>
28 
29 int
wcswidth(pwcs,n)30 wcswidth(pwcs, n)
31      const wchar_t *pwcs;
32      size_t n;
33 {
34   wchar_t wc;
35   int len, l;
36 
37   len = 0;
38   while (n-- > 0 && (wc = *pwcs++) != L'\0')
39     {
40       if ((l = wcwidth(wc)) < 0)
41 	return (-1);
42       len += l;
43     }
44   return (len);
45 }
46 #endif
47