Line data    Source code

       1             : /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
       2             :    Copyright (C) 2005-2006 Free Software Foundation, Inc.
       3             : 
       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.
       8             : 
       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.
      13             : 
      14             :    You should have received a copy of the GNU General Public License
      15             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : #include <config.h>
      18             : 
      19             : /* Specification.  */
      20             : #include "strnlen1.h"
      21             : 
      22             : #include <string.h>
      23             : 
      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.  */
      27             : size_t
      28           0 : strnlen1 (const char *string, size_t maxlen)
      29             : {
      30           0 :   const char *end = (const char *) memchr (string, '\0', maxlen);
      31           0 :   if (end != NULL)
      32           0 :     return end - string + 1;
      33             :   else
      34           0 :     return maxlen;
      35             : }