1 /* Determine display width of UTF-32 string.
2 Copyright (C) 2001-2002, 2006, 2009-2011 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2002.
5 This program is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Lesser General Public License as published
7 by the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 u32_width (const uint32_t *s, size_t n, const char *encoding)
26 const uint32_t *s_end = s + n;
35 break; /* end of string reached */
37 w = uc_width (uc, encoding);
38 if (w >= 0) /* ignore control characters in the string */