/* gdbmexists.c - Check to see if a key exists */

/* This file is part of GDBM, the GNU data base manager.
   Copyright (C) 1993, 2007, 2011, 2013, 2016-2018 Free Software
   Foundation, Inc.

   GDBM 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 3, or (at your option)
   any later version.

   GDBM 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 GDBM. If not, see <http://www.gnu.org/licenses/>.    */

/* Include system configuration before all else. */
#include "autoconf.h"

#include "gdbmdefs.h"

/* This is nothing more than a wrapper around _gdbm_findkey().  The
   point?  It doesn't alloate any memory. */

int
gdbm_exists (GDBM_FILE dbf, datum key)
{
  /* Return immediately if the database needs recovery */	
  GDBM_ASSERT_CONSISTENCY (dbf, 0);
  
  if (_gdbm_findkey (dbf, key, NULL, NULL) < 0)
    {
      if (gdbm_errno == GDBM_ITEM_NOT_FOUND)
	gdbm_set_errno (dbf, GDBM_NO_ERROR, FALSE);
      return 0;
    }
  return 1;
}