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/* the Music Player Daemon (MPD)
* Copyright (C) 2006-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program 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 program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef TREE_H
#define TREE_H
typedef struct _Tree Tree;
typedef struct _TreeNode TreeNode;
typedef struct _TreeIterator TreeIterator;
typedef struct _TreeKeyData TreeKeyData;
struct _TreeIterator
{
Tree * tree;
TreeNode * node;
int which;
};
struct _TreeKeyData
{
void * key;
void * data;
};
typedef int (*TreeCompareKeyFunction)(const void * key1, const void * key2);
typedef void (*TreeFreeFunction)(void * data);
Tree * MakeTree(TreeCompareKeyFunction compareFunc,
TreeFreeFunction freeKey,
TreeFreeFunction freeData);
void FreeTree(Tree * tree);
int GetTreeSize(Tree * tree);
void SetTreeIteratorToBegin(Tree * tree, TreeIterator * iter);
int IsTreeIteratorAtEnd(const TreeIterator * iter);
void IncrementTreeIterator(TreeIterator * iter);
TreeKeyData GetTreeKeyData(TreeIterator * iter);
int InsertInTree(Tree * tree, void * key, void * data);
int RemoveFromTreeByKey(Tree * tree, void * key);
void RemoveFromTreeByIterator(Tree * tree, TreeIterator * iter);
int FindInTree(Tree * tree, void * key, TreeIterator * iter /* can be NULL */);
#endif
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