xref: /titanic_41/usr/src/lib/libc/port/i18n/wsncat.c (revision 2eeaed14a5e2ed9bd811643ad5bffc3510ca0310)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /*	Copyright (c) 1986 AT&T	*/
30 /*	  All Rights Reserved  	*/
31 
32 
33 /*	This module is created for NLS on Sep.03.86		*/
34 
35 /*
36  * Concatenate s2 on the end of s1. S1's space must be large enough.
37  * At most n characters are moved.
38  * return s1.
39  */
40 
41 #pragma weak wcsncat = _wcsncat
42 #pragma weak wsncat = _wsncat
43 
44 #include "lint.h"
45 #include <stdlib.h>
46 #include <wchar.h>
47 
48 wchar_t *
49 _wcsncat(wchar_t *s1, const wchar_t *s2, size_t n)
50 {
51 	wchar_t *os1 = s1;
52 
53 	while (*s1++) /* find end of s1 */
54 		;
55 	++n;
56 	--s1;
57 	while (*s1++ = *s2++) /* copy s2 to s1 */
58 		if (--n == 0) {  /* at most n chars */
59 			*--s1 = 0;
60 			break;
61 		}
62 	return (os1);
63 }
64 
65 wchar_t *
66 _wsncat(wchar_t *s1, const wchar_t *s2, size_t n)
67 {
68 	return (_wcsncat(s1, s2, n));
69 }
70