1  /* A replacement function, for systems that lack strndup.
       2  
       3     Copyright (C) 1996-1998, 2001-2003, 2005-2007, 2009-2023 Free Software
       4     Foundation, Inc.
       5  
       6     This file is free software: you can redistribute it and/or modify
       7     it under the terms of the GNU Lesser General Public License as
       8     published by the Free Software Foundation; either version 2.1 of the
       9     License, or (at your option) any later version.
      10  
      11     This file 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 Lesser General Public License for more details.
      15  
      16     You should have received a copy of the GNU Lesser General Public License
      17     along with this program.  If not, see <https://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  }