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/*
* Copyright (C) 2013 IBM Corporation
*
* 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; version 2 of the License.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define _XOPEN_SOURCE
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include <i18n/i18n.h>
/* Return the number of columns required to display a localised string */
int strncols(const char *str)
{
int wlen, ncols;
wchar_t *wstr;
wlen = mbstowcs(NULL, str, 0);
if (wlen <= 0)
return wlen;
wstr = malloc(sizeof(wchar_t) * wlen + 1);
if (!wstr)
return -1;
wlen = mbstowcs(wstr, str, wlen);
if (wlen <= 0) {
free(wstr);
return wlen;
}
ncols = wcswidth(wstr, wlen);
free(wstr);
return ncols;
}
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