| /* |
| ** License Applicability. Except to the extent portions of this file are |
| ** made subject to an alternative license as permitted in the SGI Free |
| ** Software License B, Version 1.1 (the "License"), the contents of this |
| ** file are subject only to the provisions of the License. You may not use |
| ** this file except in compliance with the License. You may obtain a copy |
| ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 |
| ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: |
| ** |
| ** http://oss.sgi.com/projects/FreeB |
| ** |
| ** Note that, as provided in the License, the Software is distributed on an |
| ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS |
| ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND |
| ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A |
| ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. |
| ** |
| ** Original Code. The Original Code is: OpenGL Sample Implementation, |
| ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, |
| ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. |
| ** Copyright in any portions created by third parties is as indicated |
| ** elsewhere herein. All Rights Reserved. |
| ** |
| ** Additional Notice Provisions: The application programming interfaces |
| ** established by SGI in conjunction with the Original Code are The |
| ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released |
| ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version |
| ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X |
| ** Window System(R) (Version 1.3), released October 19, 1998. This software |
| ** was created using the OpenGL(R) version 1.2.1 Sample Implementation |
| ** published by SGI, but has not been independently verified as being |
| ** compliant with the OpenGL(R) version 1.2.1 Specification. |
| ** |
| */ |
| /* |
| ** Author: Eric Veach, July 1994. |
| ** |
| ** $Date$ $Revision$ |
| ** $Header: //depot/main/gfx/lib/glu/libtess/dict.c#5 $ |
| */ |
| |
| #include <stddef.h> |
| #include "dict-list.h" |
| #include "memalloc.h" |
| |
| /* really __gl_dictListNewDict */ |
| Dict *dictNewDict( void *frame, |
| int (*leq)(void *frame, DictKey key1, DictKey key2) ) |
| { |
| Dict *dict = (Dict *) memAlloc( sizeof( Dict )); |
| DictNode *head; |
| |
| if (dict == NULL) return NULL; |
| |
| head = &dict->head; |
| |
| head->key = NULL; |
| head->next = head; |
| head->prev = head; |
| |
| dict->frame = frame; |
| dict->leq = leq; |
| |
| return dict; |
| } |
| |
| /* really __gl_dictListDeleteDict */ |
| void dictDeleteDict( Dict *dict ) |
| { |
| DictNode *node; |
| |
| for( node = dict->head.next; node != &dict->head; node = node->next ) { |
| memFree( node ); |
| } |
| memFree( dict ); |
| } |
| |
| /* really __gl_dictListInsertBefore */ |
| DictNode *dictInsertBefore( Dict *dict, DictNode *node, DictKey key ) |
| { |
| DictNode *newNode; |
| |
| do { |
| node = node->prev; |
| } while( node->key != NULL && ! (*dict->leq)(dict->frame, node->key, key)); |
| |
| newNode = (DictNode *) memAlloc( sizeof( DictNode )); |
| if (newNode == NULL) return NULL; |
| |
| newNode->key = key; |
| newNode->next = node->next; |
| node->next->prev = newNode; |
| newNode->prev = node; |
| node->next = newNode; |
| |
| return newNode; |
| } |
| |
| /* really __gl_dictListDelete */ |
| void dictDelete( Dict *dict, DictNode *node ) /*ARGSUSED*/ |
| { |
| node->next->prev = node->prev; |
| node->prev->next = node->next; |
| memFree( node ); |
| } |
| |
| /* really __gl_dictListSearch */ |
| DictNode *dictSearch( Dict *dict, DictKey key ) |
| { |
| DictNode *node = &dict->head; |
| |
| do { |
| node = node->next; |
| } while( node->key != NULL && ! (*dict->leq)(dict->frame, key, node->key)); |
| |
| return node; |
| } |