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- /* This is file STRNCPY.C */
- /* This file may have been modified by DJ Delorie (Jan 1991). If so,
- ** these modifications are Coyright (C) 1993 DJ Delorie, 24 Kirsten Ave,
- ** Rochester NH, 03867-2954, USA.
- */
-
- /*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Chris Torek.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement: ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. Neither the name of the University nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@(#)strncpy.c 5.5 (Berkeley) 5/17/90";
- #endif /* LIBC_SCCS and not lint */
-
- #include <string.h>
- #include <sys/stdc.h>
-
- /*
- * Copy src to dst, truncating or null-padding to always copy n bytes.
- * Return dst.
- */
- char *
- strncpy(dst, src, n)
- char *dst;
- const char *src;
- register size_t n;
- {
- if (n != 0) {
- register char *d = dst;
- register const char *s = src;
-
- do {
- if ((*d++ = *s++) == 0) {
- /* NUL pad the remaining n-1 bytes */
- while (--n != 0)
- *d++ = 0;
- break;
- }
- } while (--n != 0);
- }
- return (dst);
- }
-