strndup.c revision 05436638acc7c010349a69c3395f1a57c642dc62 
1/* A replacement function, for systems that lack strndup.
2
3   Copyright (C) 1996-1998, 2001-2003, 2005-2007, 2009-2012 Free Software
4   Foundation, Inc.
5
6   This program is free software; you can redistribute it and/or modify it
7   under the terms of the GNU General Public License as published by the
8   Free Software Foundation; either version 3, or (at your option) any
9   later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
18
19#include <config.h>
20
21#include <string.h>
22
23#include <stdlib.h>
24
25char *
26strndup (char const *s, size_t n)
27{
28  size_t len = strnlen (s, n);
29  char *new = malloc (len + 1);
30
31  if (new == NULL)
32    return NULL;
33
34  new[len] = '\0';
35  return memcpy (new, s, len);
36}
37