xref: /titanic_52/usr/src/lib/libc/port/locale/wcswidth.c (revision 2d08521bd15501c8370ba2153b9cca4f094979d0)
14297a3b0SGarrett D'Amore /*
2*2d08521bSGarrett D'Amore  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
36b5e5868SGarrett D'Amore  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
44297a3b0SGarrett D'Amore  * Copyright (c) 1989, 1993
54297a3b0SGarrett D'Amore  *	The Regents of the University of California.  All rights reserved.
64297a3b0SGarrett D'Amore  * (c) UNIX System Laboratories, Inc.
74297a3b0SGarrett D'Amore  * All or some portions of this file are derived from material licensed
84297a3b0SGarrett D'Amore  * to the University of California by American Telephone and Telegraph
94297a3b0SGarrett D'Amore  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
104297a3b0SGarrett D'Amore  * the permission of UNIX System Laboratories, Inc.
114297a3b0SGarrett D'Amore  *
124297a3b0SGarrett D'Amore  * This code is derived from software contributed to Berkeley by
134297a3b0SGarrett D'Amore  * Paul Borman at Krystal Technologies.
144297a3b0SGarrett D'Amore  *
154297a3b0SGarrett D'Amore  * Redistribution and use in source and binary forms, with or without
164297a3b0SGarrett D'Amore  * modification, are permitted provided that the following conditions
174297a3b0SGarrett D'Amore  * are met:
184297a3b0SGarrett D'Amore  * 1. Redistributions of source code must retain the above copyright
194297a3b0SGarrett D'Amore  *    notice, this list of conditions and the following disclaimer.
204297a3b0SGarrett D'Amore  * 2. Redistributions in binary form must reproduce the above copyright
214297a3b0SGarrett D'Amore  *    notice, this list of conditions and the following disclaimer in the
224297a3b0SGarrett D'Amore  *    documentation and/or other materials provided with the distribution.
234297a3b0SGarrett D'Amore  * 4. Neither the name of the University nor the names of its contributors
244297a3b0SGarrett D'Amore  *    may be used to endorse or promote products derived from this software
254297a3b0SGarrett D'Amore  *    without specific prior written permission.
264297a3b0SGarrett D'Amore  *
274297a3b0SGarrett D'Amore  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
284297a3b0SGarrett D'Amore  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
294297a3b0SGarrett D'Amore  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
304297a3b0SGarrett D'Amore  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
314297a3b0SGarrett D'Amore  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
324297a3b0SGarrett D'Amore  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
334297a3b0SGarrett D'Amore  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
344297a3b0SGarrett D'Amore  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
354297a3b0SGarrett D'Amore  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
364297a3b0SGarrett D'Amore  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
374297a3b0SGarrett D'Amore  * SUCH DAMAGE.
384297a3b0SGarrett D'Amore  */
394297a3b0SGarrett D'Amore 
404297a3b0SGarrett D'Amore #include "lint.h"
41*2d08521bSGarrett D'Amore #include <locale.h>
424297a3b0SGarrett D'Amore #include <wchar.h>
43*2d08521bSGarrett D'Amore #include <xlocale.h>
444297a3b0SGarrett D'Amore 
454297a3b0SGarrett D'Amore int
46*2d08521bSGarrett D'Amore wcswidth_l(const wchar_t *pwcs, size_t n, locale_t loc)
474297a3b0SGarrett D'Amore {
484297a3b0SGarrett D'Amore 	wchar_t wc;
494297a3b0SGarrett D'Amore 	int len, l;
504297a3b0SGarrett D'Amore 
514297a3b0SGarrett D'Amore 	len = 0;
524297a3b0SGarrett D'Amore 	while (n-- > 0 && (wc = *pwcs++) != L'\0') {
53*2d08521bSGarrett D'Amore 		if ((l = wcwidth_l(wc, loc)) < 0)
544297a3b0SGarrett D'Amore 			return (-1);
554297a3b0SGarrett D'Amore 		len += l;
564297a3b0SGarrett D'Amore 	}
574297a3b0SGarrett D'Amore 	return (len);
584297a3b0SGarrett D'Amore }
59*2d08521bSGarrett D'Amore 
60*2d08521bSGarrett D'Amore int
61*2d08521bSGarrett D'Amore wcswidth(const wchar_t *pwcs, size_t n)
62*2d08521bSGarrett D'Amore {
63*2d08521bSGarrett D'Amore 	return (wcswidth_l(pwcs, n, uselocale(NULL)));
64*2d08521bSGarrett D'Amore }
65