IABSD.fr/xenocara/lib/libGLU/src/libtess/dict.c

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• Author : jsg
  Date : 2013-09-01 03:51:12
  Hash : 729f7da4
  Message : Update to GLU 9.0.0, GLU was previously part of Mesa but is now seperate. tested in a ports bulk build by landry@, ok matthieu@

• lib/libGLU/src/libtess/dict.c

• /*
   * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice including the dates of first publication and
   * either this permission notice or a reference to
   * http://oss.sgi.com/projects/FreeB/
   * shall be included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
   * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * Except as contained in this notice, the name of Silicon Graphics, Inc.
   * shall not be used in advertising or otherwise to promote the sale, use or
   * other dealings in this Software without prior written authorization from
   * Silicon Graphics, Inc.
   */
  /*
  ** Author: Eric Veach, July 1994.
  **
  */
  
  #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, *next;
  
    for( node = dict->head.next; node != &dict->head; node = next ) {
      next = 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;
  }