Mercurial > irccd

annotate extern/libbsd/strlcpy.c @ 1079:8f26ee9cc6dd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
misc: unconditionnally add BSD->POSIX extensions
author David Demelier <markand@malikania.fr>
date Fri, 16 Jul 2021 20:18:29 +0200
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1079
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
1 /* $OpenBSD: strlcpy.c,v 1.16 2019/01/25 00:19:25 millert Exp $ */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
2
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
3 /*
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
4 * Copyright (c) 1998, 2015 Todd C. Miller <millert@openbsd.org>
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
5 *
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
6 * Permission to use, copy, modify, and distribute this software for any
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
7 * purpose with or without fee is hereby granted, provided that the above
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
8 * copyright notice and this permission notice appear in all copies.
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
9 *
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
17 */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
18
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
19 #include <sys/types.h>
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
20 #include <string.h>
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
21
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
22 /*
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
23 * Copy string src to buffer dst of size dsize. At most dsize-1
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
24 * chars will be copied. Always NUL terminates (unless dsize == 0).
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
25 * Returns strlen(src); if retval >= dsize, truncation occurred.
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
26 */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
27 size_t
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
28 irc_util_strlcpy(char *dst, const char *src, size_t dsize)
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
29 {
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
30 const char *osrc = src;
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
31 size_t nleft = dsize;
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
32
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
33 /* Copy as many bytes as will fit. */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
34 if (nleft != 0) {
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
35 while (--nleft != 0) {
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
36 if ((*dst++ = *src++) == '\0')
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
37 break;
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
38 }
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
39 }
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
40
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
41 /* Not enough room in dst, add NUL and traverse rest of src. */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
42 if (nleft == 0) {
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
43 if (dsize != 0)
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
44 *dst = '\0'; /* NUL-terminate dst */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
45 while (*src++)
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
46 ;
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
47 }
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
48
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
49 return(src - osrc - 1); /* count does not include NUL */
8f26ee9cc6dd misc: unconditionnally add BSD->POSIX extensions
David Demelier <markand@malikania.fr>
parents:
diff changeset
50 }