mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* Copyright (C) 1996-2020 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
|
|
<https://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;
|
|
}
|