mirror of https://github.com/ventoy/Ventoy.git
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
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/******************************************************************************
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* biso_list.c
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*
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* Copyright (c) 2020, longpanda <admin@ventoy.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "biso.h"
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#include "biso_list.h"
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#include "biso_util.h"
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VOID BISO_DLL_Init(OUT BISO_DLL_S *pstList)
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{
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pstList->stHead.pstNext = &(pstList->stHead);
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pstList->stHead.pstPre = &(pstList->stHead);
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pstList->pstTail = &(pstList->stHead);
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pstList->uiCount = 0;
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}
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VOID BISO_DLL_AddTail
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(
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IN BISO_DLL_S *pstList,
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IN BISO_DLL_NODE_S *pstNode
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)
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{
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pstList->pstTail->pstNext = pstNode;
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pstNode->pstNext = NULL;
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pstNode->pstPre = pstList->pstTail;
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pstList->pstTail = pstNode;
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pstList->uiCount++;
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}
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VOID BISO_DLL_DelHead(IN BISO_DLL_S *pstList)
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{
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BISO_DLL_NODE_S *pstFirst = BISO_DLL_First(pstList);
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if (NULL != pstFirst)
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{
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if (1 == BISO_DLL_Count(pstList)) /* 唯一节点 */
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{
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BISO_DLL_Init(pstList);
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}
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else
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{
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pstFirst->pstNext->pstPre = &(pstList->stHead);
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pstList->stHead.pstNext = pstFirst->pstNext;
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pstList->uiCount--;
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}
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}
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}
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VOID BISO_DLL_DelTail(IN BISO_DLL_S *pstList)
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{
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BISO_DLL_NODE_S *pstLast = BISO_DLL_Last(pstList);
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if (NULL != pstLast)
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{
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if (1 == BISO_DLL_Count(pstList)) /* 唯一节点 */
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{
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BISO_DLL_Init(pstList);
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}
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else
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{
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pstLast->pstPre->pstNext = NULL;
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pstList->pstTail = pstLast->pstPre;
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pstList->uiCount--;
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}
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}
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}
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VOID BISO_DLL_Free(IN BISO_DLL_S *pstList)
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{
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BISO_DLL_NODE_S *pstFirst = BISO_DLL_First(pstList);
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while (NULL != pstFirst)
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{
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/* 每次都摘掉头节点 */
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BISO_DLL_DelHead(pstList);
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/* 使用free释放节点 */
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BISO_FREE(pstFirst);
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pstFirst = BISO_DLL_First(pstList);
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}
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}
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