File: strnlen1.c

package info (click to toggle)
gdb-doc 7.12-2
  • links: PTS, VCS
  • area: non-free
  • in suites: stretch
  • size: 215,060 kB
  • ctags: 300,587
  • sloc: ansic: 2,141,184; asm: 331,661; exp: 133,298; makefile: 57,539; sh: 23,506; yacc: 14,054; cpp: 12,262; perl: 5,300; python: 4,681; ada: 4,343; xml: 3,670; pascal: 3,120; lisp: 1,516; cs: 879; lex: 624; f90: 457; sed: 228; awk: 142; objc: 134; java: 73; fortran: 43
file content (35 lines) | stat: -rw-r--r-- 1,269 bytes parent folder | download | duplicates (14)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
   Copyright (C) 2005-2006, 2009-2015 Free Software Foundation, Inc.

   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 3 of the License, 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>

/* Specification.  */
#include "strnlen1.h"

#include <string.h>

/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
   If no '\0' terminator is found in that many characters, return MAXLEN.  */
/* This is the same as strnlen (string, maxlen - 1) + 1.  */
size_t
strnlen1 (const char *string, size_t maxlen)
{
  const char *end = (const char *) memchr (string, '\0', maxlen);
  if (end != NULL)
    return end - string + 1;
  else
    return maxlen;
}