* Copyright (C) 2011 Elena-Ramona Modroiu
 * This file is part of Kamailio, a free SIP server.
 * This file 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 2 of the License, or
 * (at your option) any later version
 * This file is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

#ifndef _PDTREE_H_
#define _PDTREE_H_

#include "../../core/str.h"

typedef struct _pdt_node
	str domain;
	struct _pdt_node *child;
} pdt_node_t;

#define PDT_MAX_DEPTH	32

#define PDT_NODE_SIZE	pdt_char_list.len

typedef struct _pdt_tree
	str sdomain;
	pdt_node_t *head;

	struct _pdt_tree *next;
} pdt_tree_t;

/* prefix tree operations */
int add_to_tree(pdt_tree_t *pt, str *code, str *domain);
int pdt_add_to_tree(pdt_tree_t **dpt, str* sdomain, str *code, str *domain);

pdt_tree_t* pdt_get_tree(pdt_tree_t *pl, str *sdomain);

str* get_domain(pdt_tree_t *pt, str *code, int *plen);
str* pdt_get_domain(pdt_tree_t *pt, str* sdomain, str *code, int *plen);

pdt_tree_t* pdt_init_tree(str* sdomain);
void pdt_free_tree(pdt_tree_t *pt);
int pdt_print_tree(pdt_tree_t *pt);

int pdt_check_pd(pdt_tree_t *pt, str* sdomain, str *sp, str *sd);

/* used to get the index for the PDT Tree hash*/
#define strpos(s,c) (strchr(s,c)-s)

int pdt_init_db(void);
int pdt_load_db(void);
str *pdt_get_char_list(void);

pdt_tree_t **pdt_get_ptree(void);