pkg-monitoring-plugins/gl/strnlen.c

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/* Find the length of STRING, but scan at most MAXLEN characters.
Copyright (C) 2005-2007, 2009-2013 Free Software Foundation, Inc.
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Written by Simon Josefsson.
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <string.h>
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/* Find the length of STRING, but scan at most MAXLEN characters.
If no '\0' terminator is found in that many characters, return MAXLEN. */
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size_t
strnlen (const char *string, size_t maxlen)
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{
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const char *end = memchr (string, '\0', maxlen);
return end ? (size_t) (end - string) : maxlen;
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}