gl/strndup.c

   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
  25 char *
  26 strndup (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 }