/*

   set.c - set functions

   This file is part of the nss-pam-ldapd library.

   Copyright (C) 2008, 2009, 2010, 2012 Arthur de Jong

   This library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   This library 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

   Lesser General Public License for more details.

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

   License along with this library; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

   02110-1301 USA

*/

#include "config.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <strings.h>

#include "set.h"

#include "dict.h"

/*

   The SET object is just a DICT which is passed around. The value

   for each entry in the dict is just the pointer to the dict.

   Another API is provided to give it a more set-like interface.

*/

SET *set_new(void)

{

  return (SET *)dict_new();

}

int set_add(SET *set, const char *value)

{

  return dict_put((DICT *)set, value, set);

}

char *set_pop(SET *set)

{

  const char *key;

  char *value;

  key = dict_getany((DICT *)set);

  if (key == NULL)

    return NULL; /* no more entries in set */

  /* remove the entry from the dict and return a copy */

  value = strdup(key);

  dict_put((DICT *)set, key, NULL);

  return value;

}

int set_contains(SET *set, const char *value)

{

  return dict_get((DICT *)set, value) != NULL;

}

void set_free(SET *set)

{

  dict_free((DICT *)set);

}

const char **set_tolist(SET *set)

{

  return dict_keys((DICT *)set);

}