mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 22:30:07 +00:00
8d71c7b0e4
* string/strnlen.c: New file. * string/Makefile (routines): Add strnlen. * string/string.h [__USE_GNU] (strnlen): Declare new function. [__OPTIMIZE__]: Define extern inline implementation of it.
31 lines
1.2 KiB
C
31 lines
1.2 KiB
C
/* Find the length of STRING, but scan at most MAXLEN characters.
|
|
Copyright (C) 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#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 ? end - string : maxlen;
|
|
}
|