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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 /* Copyright (c) 1986 AT&T */ 27 /* All Rights Reserved */ 28 29 #pragma weak _wcsncpy = wcsncpy 30 #pragma weak _wsncpy = wsncpy 31 32 #include "lint.h" 33 #include <stdlib.h> 34 #include <wchar.h> 35 36 /* 37 * Copy s2 to s1, truncating or null-padding to always copy n 38 * wide-character codes. Return s1. 39 */ 40 wchar_t * 41 wcsncpy(wchar_t *s1, const wchar_t *s2, size_t n) 42 { 43 wchar_t *os1 = s1; 44 45 n++; 46 while (--n > 0 && (*s1++ = *s2++) != 0) 47 continue; 48 if (n > 0) 49 while (--n > 0) 50 *s1++ = 0; 51 return (os1); 52 } 53 54 wchar_t * 55 wsncpy(wchar_t *s1, const wchar_t *s2, size_t n) 56 { 57 return (wcsncpy(s1, s2, n)); 58 } 59 60 /* 61 * Same as wcsncpy(), except return a pointer to the terminating null 62 * wide-character code in s1, or, if s1 is not null-terminated, s1 + n. 63 */ 64 wchar_t * 65 wcpncpy(wchar_t *s1, const wchar_t *s2, size_t n) 66 { 67 wchar_t *os1 = s1; 68 69 n++; 70 while (--n != 0) { 71 if ((*s1++ = *s2++) == 0) { 72 os1 = s1 - 1; 73 break; 74 } 75 os1 = s1; 76 } 77 if (n != 0) 78 while (--n != 0) 79 *s1++ = 0; 80 return (os1); 81 } 82