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/* Implement the stpncpy function.

   Copyright (C) 2003, 2011 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 Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, @

  size_t @var{len})

Copies the string @var{src} into @var{dst}, copying exactly @var{len}

and padding with zeros if necessary.  If @var{len} < strlen(@var{src})

then return @var{dst} + @var{len}, otherwise returns @var{dst} +

strlen(@var{src}).

@end deftypefn

*/

#include <ansidecl.h>

#include <stddef.h>

extern size_t strlen (const char *);

extern char *strncpy (char *, const char *, size_t);

char *

stpncpy (char *dst, const char *src, size_t len)

{

  size_t n = strlen (src);

  if (n > len)

    n = len;

  return strncpy (dst, src, len) + n;

}