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40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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USA. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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/* Specification. */
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#include "strnlen1.h"
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#include <string.h>
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/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
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If no '\0' terminator is found in that many characters, return MAXLEN. */
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/* This is the same as strnlen (string, maxlen - 1) + 1. */
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size_t
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strnlen1 (const char *string, size_t maxlen)
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{
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const char *end = memchr (string, '\0', maxlen);
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if (end != NULL)
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return end - string + 1;
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else
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return maxlen;
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}
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