1 /*- 2 * Copyright (c)1999 Citrus Project, 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * citrus Id: wcswidth.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp 27 * 28 * $NetBSD: wcswidth.c,v 1.1 2000/12/23 23:14:37 itojun Exp $ 29 * $FreeBSD: src/lib/libc/string/wcswidth.c,v 1.3.2.1 2001/07/11 23:48:38 obrien Exp $ 30 * $DragonFly: src/lib/libc/string/wcswidth.c,v 1.2 2003/06/17 04:26:47 dillon Exp $ 31 */ 32 33 #include <assert.h> 34 #include <wchar.h> 35 36 int 37 wcswidth(s, n) 38 const wchar_t *s; 39 size_t n; 40 { 41 int w; 42 43 w = 0; 44 while (n && *s) { 45 w += wcwidth(*s); 46 s++; 47 n--; 48 } 49 50 return w; 51 } 52