105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file
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* @brief Yet another avl tree implementation!
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*/
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#ifndef __AVLTREE_H
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#define __AVLTREE_H
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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struct avlnode {
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void *data;
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struct avlnode *left;
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struct avlnode *right;
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int bal;
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};
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struct avltree {
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struct avlnode *root;
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int (*cmp) (const void *, const void *);
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void (*del) (void *);
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int count;
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};
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void avlnode_destroy(struct avltree *t, struct avlnode *n);
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struct avltree *avltree_create(int (*cmp) (const void *, const void *),
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void (*del) (void *));
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//void avltree_destroy(struct avltree *t);
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void avltree_del_all(struct avltree *t);
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void *avltree_del(struct avltree *t, void *data);
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void *avltree_add(struct avltree *t, void *data);
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//void * avltree_get(struct avltree *t ,void *data);
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struct avlnode *avltree_get_node(struct avltree *t, void *data);
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extern int avltree_foreach_lr(struct avlnode *n, int (*callback) (void *, void *),
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void *cbpriv);
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extern int avltree_foreach_rl(struct avlnode *n, int (*callback) (void *, void *),
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void *cbpriv);
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int avltree_foreach_from_lr(struct avltree *t, struct avlnode *n, void *data,
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int (*callback) (void *, void *), void *cbpriv);
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//extern void avltree_foreach(struct avltree *t, int (*callback)(void *,void*),void *cbpriv,int dir);
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static inline void *avltree_get(struct avltree *t, void *data)
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{
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struct avlnode *n = avltree_get_node(t, data);
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if (!n)
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return NULL;
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return n->data;
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}
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static inline void *avltree_replace_data(struct avltree *t, void *data, int len)
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{
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void *df = avltree_get(t, data);
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if (!df)
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return NULL;
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memcpy(df, data, len);
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return df;
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}
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static inline void avltree_destroy(struct avltree *t)
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{
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avltree_del_all(t);
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free (t);
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}
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#define avltree_find(t,d) avltree_get(t,d)
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#define avltree_insert(t,d) avltree_add(t,d)
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//#define avltree_walk(t,dir) avltree_foreach(t,dir)
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#define avltree_foreach_asc(t,cb,priv) avltree_foreach_lr((t)->root,cb,priv)
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#define avltree_foreach_desc(t,cb,priv) avltree_foreach_rl((t)->root,cb,priv)
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#define avltree_foreach_from_asc(t,d,cb,priv) avltree_foreach_from_lr(t,(t)->root,d,cb,priv);
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#endif
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