1/* vi: set sw=4 ts=4: */
2/*
3 * Utility routines.
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include "libbb.h"
11
12/* Like strncpy but make sure the resulting string is always 0 terminated. */
13char* FAST_FUNC safe_strncpy(char *dst, const char *src, size_t size)
14{
15	if (!size) return dst;
16	dst[--size] = '\0';
17	return strncpy(dst, src, size);
18}
19
20/* Like strcpy but can copy overlapping strings. */
21void FAST_FUNC overlapping_strcpy(char *dst, const char *src)
22{
23	/* Cheap optimization for dst == src case -
24	 * better to have it here than in many callers.
25	 */
26	if (dst != src) {
27		while ((*dst = *src) != '\0') {
28			dst++;
29			src++;
30		}
31	}
32}
33