19829d36aSTakuya SHIOZAKI /*- 2*8a16b7a1SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 3*8a16b7a1SPedro F. Giffuni * 44bf546e1STim J. Robbins * Copyright (c) 1990, 1993 54bf546e1STim J. Robbins * The Regents of the University of California. All rights reserved. 64bf546e1STim J. Robbins * 74bf546e1STim J. Robbins * This code is derived from software contributed to Berkeley by 84bf546e1STim J. Robbins * Chris Torek. 99829d36aSTakuya SHIOZAKI * 109829d36aSTakuya SHIOZAKI * Redistribution and use in source and binary forms, with or without 119829d36aSTakuya SHIOZAKI * modification, are permitted provided that the following conditions 129829d36aSTakuya SHIOZAKI * are met: 139829d36aSTakuya SHIOZAKI * 1. Redistributions of source code must retain the above copyright 149829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer. 159829d36aSTakuya SHIOZAKI * 2. Redistributions in binary form must reproduce the above copyright 169829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer in the 179829d36aSTakuya SHIOZAKI * documentation and/or other materials provided with the distribution. 183fb3b97cSEd Maste * 3. Neither the name of the University nor the names of its contributors 194bf546e1STim J. Robbins * may be used to endorse or promote products derived from this software 204bf546e1STim J. Robbins * without specific prior written permission. 219829d36aSTakuya SHIOZAKI * 224bf546e1STim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 239829d36aSTakuya SHIOZAKI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 249829d36aSTakuya SHIOZAKI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 254bf546e1STim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 269829d36aSTakuya SHIOZAKI * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 279829d36aSTakuya SHIOZAKI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 289829d36aSTakuya SHIOZAKI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 299829d36aSTakuya SHIOZAKI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 309829d36aSTakuya SHIOZAKI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 319829d36aSTakuya SHIOZAKI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 329829d36aSTakuya SHIOZAKI * SUCH DAMAGE. 339829d36aSTakuya SHIOZAKI */ 349829d36aSTakuya SHIOZAKI 351707c9c3STim J. Robbins #if 0 361707c9c3STim J. Robbins #if defined(LIBC_SCCS) && !defined(lint) 371707c9c3STim J. Robbins static char sccsid[] = "@(#)strncpy.c 8.1 (Berkeley) 6/4/93"; 381707c9c3STim J. Robbins #endif /* LIBC_SCCS and not lint */ 391707c9c3STim J. Robbins #endif 409829d36aSTakuya SHIOZAKI #include <sys/cdefs.h> 41de5fe5d5SDavid E. O'Brien __FBSDID("$FreeBSD$"); 429829d36aSTakuya SHIOZAKI 439829d36aSTakuya SHIOZAKI #include <wchar.h> 449829d36aSTakuya SHIOZAKI 454bf546e1STim J. Robbins /* 464bf546e1STim J. Robbins * Copy src to dst, truncating or null-padding to always copy n bytes. 474bf546e1STim J. Robbins * Return dst. 484bf546e1STim J. Robbins */ 499829d36aSTakuya SHIOZAKI wchar_t * 504bf546e1STim J. Robbins wcsncpy(wchar_t * __restrict dst, const wchar_t * __restrict src, size_t n) 519829d36aSTakuya SHIOZAKI { 524bf546e1STim J. Robbins if (n != 0) { 534bf546e1STim J. Robbins wchar_t *d = dst; 544bf546e1STim J. Robbins const wchar_t *s = src; 559829d36aSTakuya SHIOZAKI 564bf546e1STim J. Robbins do { 574bf546e1STim J. Robbins if ((*d++ = *s++) == L'\0') { 584bf546e1STim J. Robbins /* NUL pad the remaining n-1 bytes */ 594bf546e1STim J. Robbins while (--n != 0) 604bf546e1STim J. Robbins *d++ = L'\0'; 614bf546e1STim J. Robbins break; 629829d36aSTakuya SHIOZAKI } 634bf546e1STim J. Robbins } while (--n != 0); 644bf546e1STim J. Robbins } 654bf546e1STim J. Robbins return (dst); 664bf546e1STim J. Robbins } 67