+
−/* Find the length of STRING, but scan at most MAXLEN characters.
+
−   Copyright (C) 2005-2007, 2009-2014 Free Software Foundation, Inc.
+
−   Written by Simon Josefsson.
+
−
+
−   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
+
−   the Free Software Foundation; either version 2, or (at your option)
+
−   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/>.  */
+
−
+
−#include <config.h>
+
−
+
−#include <string.h>
+
−
+
−/* Find the length of STRING, but scan at most MAXLEN characters.
+
−   If no '\0' terminator is found in that many characters, return MAXLEN.  */
+
−
+
−size_t
+
−strnlen (const char *string, size_t maxlen)
+
−{
+
−  const char *end = memchr (string, '\0', maxlen);
+
−  return end ? (size_t) (end - string) : maxlen;
+
−}