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Member "nano-4.5/lib/strnlen.c" (4 Oct 2019, 1141 Bytes) of package /linux/misc/nano-4.5.tar.xz:


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    1 /* Find the length of STRING, but scan at most MAXLEN characters.
    2    Copyright (C) 2005-2007, 2009-2019 Free Software Foundation, Inc.
    3    Written by Simon Josefsson.
    4 
    5    This program is free software; you can redistribute it and/or modify
    6    it under the terms of the GNU General Public License as published by
    7    the Free Software Foundation; either version 3, or (at your option)
    8    any later version.
    9 
   10    This program is distributed in the hope that it will be useful,
   11    but WITHOUT ANY WARRANTY; without even the implied warranty of
   12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   13    GNU General Public License for more details.
   14 
   15    You should have received a copy of the GNU General Public License
   16    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
   17 
   18 #include <config.h>
   19 
   20 #include <string.h>
   21 
   22 /* Find the length of STRING, but scan at most MAXLEN characters.
   23    If no '\0' terminator is found in that many characters, return MAXLEN.  */
   24 
   25 size_t
   26 strnlen (const char *string, size_t maxlen)
   27 {
   28   const char *end = memchr (string, '\0', maxlen);
   29   return end ? (size_t) (end - string) : maxlen;
   30 }