xref: /titanic_41/usr/src/lib/libc/port/i18n/wsncpy.c (revision fa9e4066f08beec538e775443c5be79dd423fcab)
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  * Copy s2 to s1, truncating or null-padding to always copy n characters.
37  * Return s1.
38  */
39 
40 #pragma weak wcsncpy = _wcsncpy
41 #pragma weak wsncpy = _wsncpy
42 
43 #include "lint.h"
44 #include <stdlib.h>
45 #include <wchar.h>
46 
47 wchar_t *
48 _wcsncpy(wchar_t *s1, const wchar_t *s2, size_t n)
49 {
50 	wchar_t *os1 = s1;
51 
52 	n++;
53 	while ((--n > 0) && ((*s1++ = *s2++) != 0))
54 		;
55 	if (n > 0)
56 		while (--n > 0)
57 			*s1++ = 0;
58 	return (os1);
59 }
60 
61 wchar_t *
62 _wsncpy(wchar_t *s1, const wchar_t *s2, size_t n)
63 {
64 	return (_wcsncpy(s1, s2, n));
65 }
66