1 /*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * This code is derived from software contributed to Berkeley by
11 * Paul Borman at Krystal Technologies.
12 *
13 * Copyright (c) 2011 The FreeBSD Foundation
14 * All rights reserved.
15 * Portions of this software were developed by David Chisnall
16 * under sponsorship from the FreeBSD Foundation.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. Neither the name of the University nor the names of its contributors
27 * may be used to endorse or promote products derived from this software
28 * without specific prior written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * SUCH DAMAGE.
41 *
42 * $FreeBSD: head/lib/libc/string/wcswidth.c 251069 2013-05-28 20:57:40Z emaste $
43 */
44
45 #include <wchar.h>
46 #include "xlocale_private.h"
47
48 int
wcswidth_l(const wchar_t * pwcs,size_t n,locale_t locale)49 wcswidth_l(const wchar_t *pwcs, size_t n, locale_t locale)
50 {
51 wchar_t wc;
52 int len, l;
53 FIX_LOCALE(locale);
54
55 len = 0;
56 while (n-- > 0 && (wc = *pwcs++) != L'\0') {
57 if ((l = wcwidth_l(wc, locale)) < 0)
58 return (-1);
59 len += l;
60 }
61 return (len);
62 }
63
64 int
wcswidth(const wchar_t * pwcs,size_t n)65 wcswidth(const wchar_t *pwcs, size_t n)
66 {
67 return wcswidth_l(pwcs, n, __get_locale());
68 }
69