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-rw-r--r--source3/ubiqx/ubi_dLinkList.c151
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diff --git a/source3/ubiqx/ubi_dLinkList.c b/source3/ubiqx/ubi_dLinkList.c
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-/* ========================================================================== **
- * ubi_dLinkList.c
- *
- * Copyright (C) 1997 by Christopher R. Hertel
- *
- * Email: crh@ubiqx.mn.org
- * -------------------------------------------------------------------------- **
- * This module implements simple doubly-linked lists.
- * -------------------------------------------------------------------------- **
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * -------------------------------------------------------------------------- **
- *
- * $Log: ubi_dLinkList.c,v $
- * Revision 1.2 1997/10/15 03:11:46 crh
- * These are the ubiqx modules, as included with the Samba distribution.
- * Updated the linked list module, which has new and changed macros.
- *
- * Revision 0.3 1997/10/15 03:05:39 crh
- * Added some handy type casting to the macros. Added AddHere and RemThis
- * macros.
- *
- * Revision 0.2 1997/10/08 03:07:21 crh
- * Fixed a few forgotten link-ups in Insert(), and fixed the AddHead()
- * macro, which was passing the wrong value for <After> to Insert().
- *
- * Revision 0.1 1997/10/07 04:34:07 crh
- * Initial Revision.
- *
- *
- * ========================================================================== **
- */
-
-#include "ubi_dLinkList.h"
-
-/* ========================================================================== **
- * Functions...
- */
-
-ubi_dlListPtr ubi_dlInitList( ubi_dlListPtr ListPtr )
- /* ------------------------------------------------------------------------ **
- * Initialize a doubly-linked list header.
- *
- * Input: ListPtr - A pointer to the list structure that is to be
- * initialized for use.
- *
- * Output: A pointer to the initialized list header (i.e., same as
- * <ListPtr>).
- *
- * ------------------------------------------------------------------------ **
- */
- {
- ListPtr->Head = NULL;
- ListPtr->Tail = NULL;
- ListPtr->count = 0;
- return( ListPtr );
- } /* ubi_dlInitList */
-
-ubi_dlNodePtr ubi_dlInsert( ubi_dlListPtr ListPtr,
- ubi_dlNodePtr New,
- ubi_dlNodePtr After )
- /* ------------------------------------------------------------------------ **
- * Insert a new node into the list.
- *
- * Input: ListPtr - A pointer to the list into which the node is to
- * be inserted.
- * New - Pointer to the new node.
- * After - NULL, or a pointer to a node that is already in the
- * list.
- * If NULL, then <New> will be added at the head of the
- * list, else it will be added following <After>.
- *
- * Output: A pointer to the node that was inserted into the list (i.e.,
- * the same as <New>).
- *
- * ------------------------------------------------------------------------ **
- */
- {
- if( NULL == After )
- {
- New->Next = ListPtr->Head;
- New->Prev = NULL;
- if( NULL != ListPtr->Head )
- ListPtr->Head->Prev = New;
- else
- ListPtr->Tail = New;
- ListPtr->Head = New;
- }
- else
- {
- New->Next = After->Next;
- New->Prev = After;
- if( NULL != After->Next )
- After->Next->Prev = New;
- else
- ListPtr->Tail = New;
- After->Next = New;
- }
-
- ++(ListPtr->count);
-
- return( New );
- } /* ubi_dlInsert */
-
-ubi_dlNodePtr ubi_dlRemove( ubi_dlListPtr ListPtr, ubi_dlNodePtr Old )
- /* ------------------------------------------------------------------------ **
- * Remove a node from the list.
- *
- * Input: ListPtr - A pointer to the list from which <Old> is to be
- * removed.
- * Old - A pointer to the node that is to be removed from the
- * list.
- *
- * Output: A pointer to the node that was removed (i.e., <Old>).
- *
- * ------------------------------------------------------------------------ **
- */
- {
- if( NULL != Old )
- {
- if( Old->Next )
- Old->Next->Prev = Old->Prev;
- else
- ListPtr->Tail = Old->Prev;
-
- if( Old->Prev )
- Old->Prev->Next = Old->Next;
- else
- ListPtr->Head = Old->Next;
-
- --(ListPtr->count);
- }
-
- return( Old );
- } /* ubi_dlRemove */
-
-
-/* ================================ The End ================================= */