coreutils/lib/strndup.c
2005-05-14 07:58:06 +00:00

56 lines
1.5 KiB
C

/* Copyright (C) 1996, 1997, 1998, 2000, 2003 Free Software Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C Library.
Bugs can be reported to bug-glibc@prep.ai.mit.edu.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#ifndef HAVE_DECL_STRNLEN
"this configure-time declaration test was not run"
#endif
#if !HAVE_DECL_STRNLEN
size_t strnlen ();
#endif
#undef __strndup
#undef strndup
#ifndef weak_alias
# define __strndup strndup
#endif
char *
__strndup (const char *s, size_t n)
{
size_t len = strnlen (s, n);
char *new = malloc (len + 1);
if (new == NULL)
return NULL;
new[len] = '\0';
return memcpy (new, s, len);
}
#ifdef weak_alias
weak_alias (__strndup, strndup)
#endif