63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
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/* the Music Player Daemon (MPD)
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* (c)2006 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef TREE_H
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#define TREE_H
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typedef struct _Tree Tree;
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typedef struct _TreeNode TreeNode;
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typedef struct _TreeIterator TreeIterator;
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typedef struct _TreeKeyData TreeKeyData;
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struct _TreeIterator
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{
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Tree * tree;
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TreeNode * node;
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int which;
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};
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struct _TreeKeyData
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{
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void * key;
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void * data;
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};
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typedef int (*TreeCompareKeyFunction)(const void * key1, const void * key2);
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typedef void (*TreeFreeFunction)(void * data);
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Tree * MakeTree(TreeCompareKeyFunction compareFunc,
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TreeFreeFunction freeKey,
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TreeFreeFunction freeData);
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void FreeTree(Tree * tree);
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int GetTreeSize(Tree * tree);
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void SetTreeIteratorToBegin(Tree * tree, TreeIterator * iter);
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int IsTreeIteratorAtEnd(const TreeIterator * iter);
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void IncrementTreeIterator(TreeIterator * iter);
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TreeKeyData GetTreeKeyData(TreeIterator * iter);
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int InsertInTree(Tree * tree, void * key, void * data);
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int RemoveFromTreeByKey(Tree * tree, void * key);
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void RemoveFromTreeByIterator(Tree * tree, TreeIterator * iter);
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int FindInTree(Tree * tree, void * key, TreeIterator * iter /* can be NULL */);
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#endif
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