libbsd/src/strlspy.c, https://www.opensource.apple.com/source/Libc/Libc-262/ppc/gen/strcpy.c?txt, https://www.opensource.apple.com/source/Libc/Libc-262/ppc/gen/strncpy.c?txt

strcpy.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1992, 1997 NeXT Software, Inc.  All rights reserved.
 * 
 *	File:	libc/gen/ppc/strcpy.c
 *
 *	This file contains machine dependent code for string copy
 *
 * HISTORY
 *  24-Jan-1997 Umesh Vaishampayan (umeshv@NeXT.com)
 *	Ported to PPC.
 * 24-Nov-92  Derek B Clegg (dclegg@next.com)
 *	Created.
 */
#import <string.h>

/* XXX This routine should be optimized. */

/* ANSI sez:
 *   The `strcpy' function copies the string pointed to by `s2' (including
 *   the terminating null character) into the array pointed to by `s1'.
 *   If copying takes place between objects that overlap, the behavior
 *   is undefined.
 *   The `strcpy' function returns the value of `s1'.  [4.11.2.3]
 */
char *
strcpy(char *s1, const char *s2)
{
    char *s = s1;
    while ((*s++ = *s2++) != 0)
	;
    return (s1);
}

strlcpy.c

/*	$OpenBSD: strlcpy.c,v 1.10 2005/08/08 08:05:37 espie Exp $	*/

/*
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <string.h>

/*
 * Copy src to string dst of size siz.  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz == 0).
 * Returns strlen(src); if retval >= siz, truncation occurred.
 */
size_t
strlcpy(char *dst, const char *src, size_t siz)
{
	char *d = dst;
	const char *s = src;
	size_t n = siz;

	/* Copy as many bytes as will fit */
	if (n != 0) {
		while (--n != 0) {
			if ((*d++ = *s++) == '\0')
				break;
		}
	}

	/* Not enough room in dst, add NUL and traverse rest of src */
	if (n == 0) {
		if (siz != 0)
			*d = '\0';		/* NUL-terminate dst */
		while (*s++)
			;
	}

	return(s - src - 1);	/* count does not include NUL */
}

strncpy.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1992, 1997 NeXT Software, Inc.  All rights reserved.
 * 
 *	File:	libc/gen/ppc/strncpy.c
 *
 *	This file contains machine dependent code for string copy
 *
 * HISTORY
 *  24-Jan-1997 Umesh Vaishampayan (umeshv@NeXT.com)
 *	Ported to PPC.
 * 24-Nov-92  Derek B Clegg (dclegg@next.com)
 *	Created.
 */
#import <string.h>

/* This routine should be optimized. */

/* ANSI sez:
 *   The `strncpy' function copies not more than `n' characters (characters
 *   that follow a null character are not copied) from the array pointed to
 *   by `s2' to the array pointed to by `s1'.  If copying takes place between
 *   objects that overlap, the behavior is undefined.
 *   If the array pointed to by `s2' is a string that is shorter than `n'
 *   characters, null characters are appended to the copy in the array
 *   pointed to by `s1', until `n' characters in all have been written.
 *   The `strncpy' function returns the value of `s1'.  [4.11.2.4]
 */
char *
strncpy(char *s1, const char *s2, size_t n)
{
    char *s = s1;
    while (n > 0 && *s2 != '\0') {
	*s++ = *s2++;
	--n;
    }
    while (n > 0) {
	*s++ = '\0';
	--n;
    }
    return s1;
}