rmilter/include/radix.h
2014-01-03 16:29:14 +00:00

58 lines
2.2 KiB
C

/*
* Copyright (c) 2007-2012, Vsevolod Stakhov
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer. Redistributions in binary form
* must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with
* the distribution. Neither the name of the author nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RADIX_H
#define RADIX_H
#include "config.h"
#define RADIX_NO_VALUE (unsigned char)-1
typedef struct radix_node_s radix_node_t;
struct radix_node_s {
radix_node_t *right;
radix_node_t *left;
radix_node_t *parent;
unsigned char value;
};
typedef struct {
radix_node_t *root;
size_t size;
} radix_tree_t;
radix_tree_t *radix_tree_create(void);
int radix32tree_insert(radix_tree_t *tree,
uint32_t key, uint32_t mask, unsigned char value);
int radix32tree_delete(radix_tree_t *tree,
uint32_t key, uint32_t mask);
unsigned char radix32tree_find(radix_tree_t *tree, uint32_t key);
void radix_tree_free(radix_tree_t *tree);
#endif