Subversion Repositories openrisc_2011-10-31

/* Implement the xstrndup function.

   Copyright (C) 2005 Free Software Foundation, Inc.

   Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.

This file is part of the libiberty library.

Libiberty is free software; you can redistribute it and/or

modify it under the terms of the GNU Library General Public

License as published by the Free Software Foundation; either

version 2 of the License, or (at your option) any later version.

Libiberty 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

Library General Public License for more details.

You should have received a copy of the GNU Library General Public

License along with libiberty; see the file COPYING.LIB.  If

not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,

Boston, MA 02110-1301, USA.  */

/*

@deftypefn Replacement char* xstrndup (const char *@var{s}, size_t @var{n})

Returns a pointer to a copy of @var{s} with at most @var{n} characters

without fail, using @code{xmalloc} to obtain memory.  The result is

always NUL terminated.

@end deftypefn

*/

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <sys/types.h>

#ifdef HAVE_STRING_H

#include <string.h>

#else

# ifdef HAVE_STRINGS_H

#  include <strings.h>

# endif

#endif

#include "ansidecl.h"

#include "libiberty.h"

char *

xstrndup (const char *s, size_t n)

{

  char *result;

  size_t len = strlen (s);

  if (n < len)

    len = n;

  result = XNEWVEC (char, len + 1);

  result[len] = '\0';

  return (char *) memcpy (result, s, len);

}