1 /* $OpenBSD: wcswidth.c,v 1.5 2015/09/12 16:23:14 guenther Exp $ */ 2 /* $NetBSD: wcswidth.c,v 1.2 2001/01/03 14:29:37 lukem Exp $ */ 3 4 /*- 5 * Copyright (c)1999 Citrus Project, 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * citrus Id: wcswidth.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp 30 */ 31 32 #include <wchar.h> 33 34 int 35 wcswidth(const wchar_t *s, size_t n) 36 { 37 int w, q; 38 39 w = 0; 40 while (n && *s) { 41 q = wcwidth(*s); 42 if (q == -1) 43 return (-1); 44 w += q; 45 s++; 46 n--; 47 } 48 49 return w; 50 } 51 DEF_WEAK(wcswidth); 52
