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Member "nano-4.5/lib/strnlen1.c" (4 Oct 2019, 1270 Bytes) of package /linux/misc/nano-4.5.tar.xz:
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1 /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
2 Copyright (C) 2005-2006, 2009-2019 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 #include <config.h>
19 /* Specification. */
20 #include "strnlen1.h"
22 #include <string.h>
24 /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
25 If no '\0' terminator is found in that many characters, return MAXLEN. */
26 /* This is the same as strnlen (string, maxlen - 1) + 1. */
28 strnlen1 (const char *string, size_t maxlen)
30 const char *end = (const char *) memchr (string, '\0', maxlen);
31 if (end != NULL)
32 return end - string + 1;
34 return maxlen;