| /* Copyright (C) 1996-2014 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; |
| } |
