+++ /dev/null
-/***************************************************************************/
-/* */
-/* ftlist.c */
-/* */
-/* Generic list support for FreeType (body). */
-/* */
-/* Copyright 1996-2001 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
-
- /*************************************************************************/
- /* */
- /* This file implements functions relative to list processing. Its */
- /* data structures are defined in `freetype/internal/ftlist.h'. */
- /* */
- /*************************************************************************/
-
-
-#include <ft2build.h>
-#include FT_LIST_H
-#include FT_INTERNAL_DEBUG_H
-#include FT_INTERNAL_OBJECTS_H
-
-
- /*************************************************************************/
- /* */
- /* The macro FT_COMPONENT is used in trace mode. It is an implicit */
- /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
- /* messages during execution. */
- /* */
-#undef FT_COMPONENT
-#define FT_COMPONENT trace_list
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( FT_ListNode )
- FT_List_Find( FT_List list,
- void* data )
- {
- FT_ListNode cur;
-
-
- cur = list->head;
- while ( cur )
- {
- if ( cur->data == data )
- return cur;
-
- cur = cur->next;
- }
-
- return (FT_ListNode)0;
- }
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( void )
- FT_List_Add( FT_List list,
- FT_ListNode node )
- {
- FT_ListNode before = list->tail;
-
-
- node->next = 0;
- node->prev = before;
-
- if ( before )
- before->next = node;
- else
- list->head = node;
-
- list->tail = node;
- }
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( void )
- FT_List_Insert( FT_List list,
- FT_ListNode node )
- {
- FT_ListNode after = list->head;
-
-
- node->next = after;
- node->prev = 0;
-
- if ( !after )
- list->tail = node;
- else
- after->prev = node;
-
- list->head = node;
- }
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( void )
- FT_List_Remove( FT_List list,
- FT_ListNode node )
- {
- FT_ListNode before, after;
-
-
- before = node->prev;
- after = node->next;
-
- if ( before )
- before->next = after;
- else
- list->head = after;
-
- if ( after )
- after->prev = before;
- else
- list->tail = before;
- }
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( void )
- FT_List_Up( FT_List list,
- FT_ListNode node )
- {
- FT_ListNode before, after;
-
-
- before = node->prev;
- after = node->next;
-
- /* check whether we are already on top of the list */
- if ( !before )
- return;
-
- before->next = after;
-
- if ( after )
- after->prev = before;
- else
- list->tail = before;
-
- node->prev = 0;
- node->next = list->head;
- list->head->prev = node;
- list->head = node;
- }
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( FT_Error )
- FT_List_Iterate( FT_List list,
- FT_List_Iterator iterator,
- void* user )
- {
- FT_ListNode cur = list->head;
- FT_Error error = FT_Err_Ok;
-
-
- while ( cur )
- {
- FT_ListNode next = cur->next;
-
-
- error = iterator( cur, user );
- if ( error )
- break;
-
- cur = next;
- }
-
- return error;
- }
-
-
- /* documentation is in ftlist.h */
-
- FT_EXPORT_DEF( void )
- FT_List_Finalize( FT_List list,
- FT_List_Destructor destroy,
- FT_Memory memory,
- void* user )
- {
- FT_ListNode cur;
-
-
- cur = list->head;
- while ( cur )
- {
- FT_ListNode next = cur->next;
- void* data = cur->data;
-
-
- if ( destroy )
- destroy( memory, data, user );
-
- FREE( cur );
- cur = next;
- }
-
- list->head = 0;
- list->tail = 0;
- }
-
-
-/* END */
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