lib/strndup.c

   1 /* A replacement function, for systems that lack strndup.
   2
   3    Copyright (C) 1996, 1997, 1998, 2001, 2002, 2003, 2005, 2006 Free
   4    Software 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 2, 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, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #include <config.h>
  21 #include "strndup.h"
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "strnlen.h"
  27
  28 char *
  29 strndup (char const *s, size_t n)
  30 {
  31   size_t len = strnlen (s, n);
  32   char *new = malloc (len + 1);
  33
  34   if (new == NULL)
  35     return NULL;
  36
  37   new[len] = '\0';
  38   return memcpy (new, s, len);
  39 }