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/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include "wcwidth.h"
/* Determine number of column positions required for first N wide
characters (or fewer if S ends before this) in S. */
int
wcswidth (const wchar_t *s, size_t n)
{
int result = 0;
while (n-- > 0 && *s != L'\0')
{
int now = internal_wcwidth (*s);
if (now == -1)
return -1;
result += now;
++s;
}
return result;
}
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