compat/strndup.c

   1 /* Implement the strndup function.
   2    Copyright (C) 2005 Free Software Foundation, Inc.
   3    Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
   4
   5 This file is part of the libiberty library.
   6 Libiberty is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU Library General Public
   8 License as published by the Free Software Foundation; either
   9 version 2 of the License, or (at your option) any later version.
  10
  11 Libiberty 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 GNU
  14 Library General Public License for more details.
  15
  16 You should have received a copy of the GNU Library General Public
  17 License along with libiberty; see the file COPYING.LIB.  If
  18 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  19 Boston, MA 02110-1301, USA.  */
  20
  21 /*
  22  * This file was borrowed on 2014-05-05 and adapted from:
  23  * https://raw.github.com/mirrors/gcc/master/libiberty/strndup.c
  24  */
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include "compat.h"
  30
  31 #include <sys/types.h>
  32 #ifdef HAVE_STDLIB_H
  33 #include <stdlib.h>
  34 #endif
  35 #ifdef HAVE_STRING_H
  36 #include <string.h>
  37 #endif
  38
  39 char *
  40 compat_strndup (const char *s, size_t n)
  41 {
  42   char *result;
  43   size_t len = strlen (s);
  44
  45   if (n < len)
  46     len = n;
  47
  48   result = (char *) malloc (len + 1);
  49   if (!result)
  50     return 0;
  51
  52   result[len] = '\0';
  53   return (char *) memcpy (result, s, len);
  54 }