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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libiberty/] [xstrndup.c] - Rev 737

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/* 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);
}
 

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