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/* |
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* zAVLTree.h: Header file for AVLTrees with string keys. |
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* Copyright (C) 1998 Michael H. Buselli |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library 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 GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the Free |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* The author of this library can be reached at the following address: |
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* Michael H. Buselli |
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* 4334 N. Hazel St. #515 |
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* Chicago, IL 60613-1456 |
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* |
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* Or you can send email to . |
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* The official web page for this product is: |
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* http://www.tezcat.com/~cosine/pub/AVLTree/ |
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* |
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* This is version 0.1.0 (alpha). |
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*/ |
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#ifndef _ZAVLTREE_H_ |
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#define _ZAVLTREE_H_ |
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typedef struct _zAVLNode { |
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const char *key; |
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long depth; |
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void *item; |
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struct _zAVLNode *parent; |
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struct _zAVLNode *left; |
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struct _zAVLNode *right; |
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} zAVLNode; |
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typedef struct { |
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zAVLNode *top; |
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long count; |
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const char *(*getkey)(const void *item); |
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} zAVLTree; |
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typedef struct { |
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const zAVLTree *avltree; |
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const zAVLNode *curnode; |
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} zAVLCursor; |
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extern zAVLTree *zAVLAllocTree (const char *(*getkey)(void const *item)); |
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extern void zAVLFreeTree (zAVLTree *avltree, void (freeitem)(void *item)); |
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extern int zAVLInsert (zAVLTree *avltree, void *item); |
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extern void *zAVLSearch (zAVLTree const *avltree, const char *key); |
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extern int zAVLDelete (zAVLTree *avltree, const char *key); |
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extern void *zAVLFirst (zAVLCursor *avlcursor, zAVLTree const *avltree); |
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extern void *zAVLNext (zAVLCursor *avlcursor); |
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#endif |