mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* Copyright (C) 1996, 1997, 1999 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#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;
|
|
}
|