702 lines
12 KiB
C++
702 lines
12 KiB
C++
//-------------------------------------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, SH Software Co. Ltd.
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// = FileName : PDList 模板类
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// = Version : ver2.0
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// = Author : zjq
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// = CreateDate : 2002-09-09
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// = Description: PDList 声明 双向指针链表，内存外部分配，自动释放，也提供外部释放接口。支持空指针。
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// 适用于大型数据对象，随机访问较少，空间动态分配经常发生的情况。
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// = Maintainers:
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//
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//-------------------------------------------------------------------------------------------------------+
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#ifndef _PDLIST_H_
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#define _PDLIST_H_
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#ifndef _DUALLIST_H_
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#include "DualList.h"
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#endif
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template<class T>class PDList:public DualList<T*>
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{
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public:
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PDList(long size = 0);
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virtual ~PDList();
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virtual void DelCur();
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virtual void Clear();
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//索引以未移动时为准
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virtual bool Move(long from,long to);
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//稳定插入排序,空数据将排列在最后
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virtual void Arrange(bool bIncrease = true);
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//稳定插入排序
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virtual void Arrange(int (*cmp)(const T&,const T&));
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//attribute
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bool operator == (const PDList<T>&list) const;
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bool operator != (const PDList<T>&list) const;
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//返回已经分配空间、实际存在的数据数目， <= this->GetLength().
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long GetDataNum() const;
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bool IsCurEmpty() const;
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bool IsEmptyData(long index) const;
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//direct data access
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T &GetCurPData();
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const T& GetPData(long i) const;
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T &operator()(long index);
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//fetch
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//取走数据，并删除结点
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T* FetchCur();
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T* Fetch(long i);
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T* FetchFirst();
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T* FetchLast();
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//release
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//仅释放数据空间，不删除指针空间,不改变链表长度，不移动cur;
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void ReleaseCur();
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void Release(long i);
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void ReleaseAll();
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long FillIn(T*t);
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//search
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//仅仅为了速度而替换Table<T>
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long FindAndDel(T*t);
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//没发现，加到最后，并返回index;
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long FindDataOrAddTail(const T&t);
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//没发现插入Head
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void FindDataOrInsertHead(const T&t);
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long FindDataAndDel(const T&t);
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long FindData(const T&t,long from = 0,long to = -1) const;
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long FindData(const T&t,Quene<long>&quene,long from = 0,long to = -1) const;
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//sort
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//二分查找,适用于升序表
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long BFindData(const T&t,long from = 0,long to = -1) const;
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//二分查找,并移动游标,适用于升序表
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bool BFindDataTo(const T&t,long from = 0,long to = -1);
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//构造升序表,如返回false,外部释放p
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bool SortIn(T*p,bool bAllowDup = false);
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protected:
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virtual void Realloc(long newLength);
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};
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template<class T>
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bool PDList<T>::operator != (const PDList<T>&list) const
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{
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return !((*this) == list);
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}
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template<class T>
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bool PDList<T>::IsCurEmpty() const
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{
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return this->IsOut() ? true : this->curPos->data == NULL;
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}
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template<class T>
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T& PDList<T>::GetCurPData()
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{
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return *this->GetCurData();
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}
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template<class T>
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const T& PDList<T>::GetPData(long i) const
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{
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return *this->GetAt(i);
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}
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template<class T>
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T& PDList<T>::operator()(long index)
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{
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return *((*this)[index]);
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}
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template<class T>
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void PDList<T>::Release(long i)
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{
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this->MoveTo(i);
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ReleaseCur();
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}
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template<class T>
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T* PDList<T>::Fetch(long i)
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{
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this->MoveTo(i);
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return FetchCur();
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}
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template<class T>
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T* PDList<T>::FetchFirst()
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{
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this->MoveToFirst();
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return FetchCur();
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}
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template<class T>
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T* PDList<T>::FetchLast()
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{
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this->MoveToLast();
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return FetchCur();
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}
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template<class T>
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long PDList<T>::BFindData(const T&t,long from,long to) const
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{
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if (to < 0 || to >= this->GetLength())
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{
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to = this->GetLastIndex();
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}
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if (from > to)
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{
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return NOT_FOUND;
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}
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if (t < GetPData(from))
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{
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return NOT_FOUND;
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}
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if (t > GetPData(to))
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{
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return NOT_FOUND;
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}
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while(from <= to)
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{
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long mid = (from+to)/2;
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const T& tCur = GetPData(mid);
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if (t > tCur)
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{
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from = mid+1;
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}
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else if (t < tCur)
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{
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to = mid-1;
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}
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else
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{
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return mid;
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}
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}
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return NOT_FOUND;
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}
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template<class T>
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bool PDList<T>::BFindDataTo(const T&t,long from,long to)
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{
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if (to < 0 || to >= this->GetLength())
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{
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to = this->GetLastIndex();
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}
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if (this->IsEmpty())
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{
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this->MoveTo(0);
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return false;
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}
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this->MoveTo(from);
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if (t < GetCurPData())
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{
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return false;
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}
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this->MoveTo(to);
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if (t > GetCurPData())
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{
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this->MoveToNext();
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return false;
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}
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while(from < to)
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{
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long mid = (from+to)/2;
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this->MoveTo(mid);
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const T& tCur = GetCurPData();
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if (t > tCur)
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{
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from = mid+1;
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}
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else if (t < tCur)
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{
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to = mid-1;
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}
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else
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{
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return true;
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}
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}
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if (from == to)
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{
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this->MoveTo(from);
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const T& tCur = GetCurPData();
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if (t > tCur)
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{
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this->MoveToNext();
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}
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else if (!(t < tCur))
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{
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return true;
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}
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return false;
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}
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return false;
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}
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template<class T>
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bool PDList<T>::SortIn(T*p,bool bAllowDup)
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{
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if (BFindDataTo(*p))
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{
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if (!bAllowDup)
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{
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return false;
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}
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//需要找最后一个
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this->MoveToNext();
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while(!this->IsOut() && GetCurPData() == *p)
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{
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this->MoveToNext();
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}
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}
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this->InsertCur(p);
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return true;
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}
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template<class T>
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void PDList<T>::Clear()
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{
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this->tail->next = NULL;
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DListNode<T*>*p = (DListNode<T*>*)(this->head->next);
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while(p != NULL)
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{
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DListNode<T*> *pn = (DListNode<T*>*)(p->next);
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if (p->data != NULL)
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{
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delete p->data;
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}
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delete p;
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p = pn;
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}
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this->curPos = this->tail = this->head->next = this->head;
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((DListNode<T*>*)this->head)->pre = this->head;
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this->length = 0;
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this->cur = -1;
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}
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template<class T>
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PDList<T>::PDList(long size)
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{
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//作为遍历结束条件
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this->head->data = NULL;
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if (size > 0)
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{//未用基类的构造函数来调用Realloc(size)!!!，因为那时子类还未创建
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Realloc(size);
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}
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}
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template<class T>
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long PDList<T>::FindAndDel(T*t)
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{
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for (this->MoveToFirst();!this->IsOut();this->MoveToNext())
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{
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if (this->GetCurData() == t)
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{
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DelCur();
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return 1;
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}
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}
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return 0;
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}
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template<class T>
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long PDList<T>::FillIn(T*t)
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{
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for (this->MoveToFirst();!IsCurEmpty();this->MoveToNext());
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if (this->IsOut())
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{
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this->AddTail(t);
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}
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else
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{
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this->SetCurData(t);
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}
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return this->GetCur();
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}
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template<class T>
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void PDList<T>::ReleaseAll()
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{
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for (this->MoveToFirst();!this->IsOut();this->MoveToNext())
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{
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ReleaseCur();
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}
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}
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template<class T>
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bool PDList<T>::operator == (const PDList<T>&list) const
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{
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if (list.GetLength() != this->GetLength())
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{
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return false;
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}
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T* const*pCur0,*const*pCur1;
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for (pCur0 = this->GetFirst(),pCur1 = list.GetFirst();pCur0 != NULL;
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pCur0 = this->GetNext(pCur0), pCur1 = list.GetNext(pCur1))
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{
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if (*pCur0 != NULL && *pCur1 != NULL && **pCur0 != **pCur1)
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{
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return false;
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}
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else if (!(*pCur0 == NULL && *pCur1 == NULL))
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{
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return false;
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}
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}
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return true;
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}
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template<class T>
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T* PDList<T>::FetchCur()
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{
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if (this->IsOut())
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{
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return NULL;
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}
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T* p = this->GetCurData();
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this->SetCurData(NULL);
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DelCur();
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return p;
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}
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template<class T>
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void PDList<T>::Realloc(long newLength)
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{
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if (newLength>this->GetLength())
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{
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long oldCur = this->cur;
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ListNode<T*>*oldPos = this->curPos;
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while(this->GetLength()<newLength)
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{
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this->AddTail(NULL);
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}
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this->curPos = oldPos;
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this->cur = oldCur;
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}
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}
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template<class T>
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PDList<T>::~PDList()
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{
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if (this->head == NULL)
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{
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return;
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}
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ReleaseAll();
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}
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template<class T>
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long PDList<T>::GetDataNum() const
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{
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long count = 0;
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T* const*pCur = this->GetFirst();
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for (long i = 0;i<this->GetLength();i++,pCur = this->GetNext(pCur))
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{
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if (*pCur != NULL)
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{
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count++;
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}
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}
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return count;
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}
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template<class T>
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bool PDList<T>::IsEmptyData(long index) const
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{
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return this->IsValidIndex(index)?this->GetAt(index) == NULL:true;
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}
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template<class T>
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void PDList<T>::ReleaseCur()
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{
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if (IsCurEmpty())
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{
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return;
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}
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delete this->GetCurData();
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this->SetCurData(NULL);
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}
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template<class T>
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void PDList<T>::DelCur()
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{
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if (this->GetCurData() != NULL)
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{
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delete this->GetCurData();
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}
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DualList<T*>::DelCur();
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}
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template<class T>
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long PDList<T>::FindDataOrAddTail(const T&t)
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{
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long pos = FindData(t,0,this->GetLastIndex());
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if (pos == NOT_FOUND)
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{
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T*p = new T;
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*p = t;
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return this->AddTail(p);
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}
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else
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{
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return pos;
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}
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}
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template<class T>
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void PDList<T>::FindDataOrInsertHead(const T&t)
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{
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long pos = FindData(t,0,this->GetLastIndex());
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if (pos == NOT_FOUND)
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{
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T*p = new T;
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*p = t;
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this->InsertHead(p);
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}
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}
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template<class T>
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long PDList<T>::FindDataAndDel(const T&t)
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{
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long count = 0;
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for (this->MoveToFirst();!this->IsOut();this->MoveToNext())
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{
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if (this->GetCurData() != NULL && *(this->GetCurData()) == t)
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{
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DelCur();
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count++;
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}
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}
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return count;
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}
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template<class T>
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long PDList<T>::FindData(const T&t,long from,long to) const
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{
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if (to < 0 || to >= this->GetLength())
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{
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to = this->GetLastIndex();
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}
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T* const* pCur = NULL;
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long i;
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for (pCur = this->GetTo(from),i = from;i <= to;pCur = this->GetNext(pCur),i++)
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{
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if (*pCur != NULL && **pCur == t)
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{
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return i;
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}
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}
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return NOT_FOUND;
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}
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template<class T>
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long PDList<T>::FindData(const T&t,Quene<long>&quene,long from,long to) const
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{
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if (to < 0 || to >= this->GetLength())
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{
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to = this->GetLastIndex();
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}
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T*const* pCur = NULL;
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long i;
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for (pCur = this->GetTo(from),i = from;i <= to;pCur = this->GetNext(pCur),i++)
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{
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if (*pCur != NULL && **pCur == t)
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{
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return quene.EnQuene(i);
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}
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}
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return quene.GetLength();
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}
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template<class T>
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bool PDList<T>::Move(long from,long to)
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{
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if (from == to || from == to-1)
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{
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return false;
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}
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this->MoveTo(from);
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T* t = this->GetCurData();
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this->SetCurData(NULL);
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this->Insert(to,t);
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if (from > to)
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{
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this->Del(from+1);//from数据已经后移
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this->MoveTo(to);//to是最终位置
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}
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else
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{
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this->Del(from);
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this->MoveTo(to-1);//to-1是最终位置
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}
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return true;
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}
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template<class T>
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void PDList<T>::Arrange(bool bIncrease)
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{
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if (this->GetLength() < 2)
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{
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return;
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}
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long nullCount = 0;
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if (bIncrease)
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{
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this->MoveToFirst();
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while(IsCurEmpty())
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{
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this->DelFirst();
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nullCount++;
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this->MoveToFirst();
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}
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this->MoveToNext();
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while(!this->IsBegin())
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{
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if (!IsCurEmpty())
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{
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T *temp = this->GetCurData();
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long i = this->GetCur();
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ListNode<T*>*pos = this->GetCurPos();
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this->MoveToPre();
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if (*this->GetCurData() > *temp)
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{
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while(!this->IsBegin() && *this->GetCurData() > *temp)
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{
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this->MoveToPre();
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}
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this->InsertAfterCur(temp);
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this->curPos = pos;
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this->cur = i+1;
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this->SetCurData(NULL);
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DelCur();
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}
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else
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{
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this->MoveToNext();
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}
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}
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else
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{
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DelCur();
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nullCount++;
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}
|
|
this->MoveToNext();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
this->MoveToFirst();
|
|
while(IsCurEmpty())
|
|
{
|
|
this->DelFirst();
|
|
nullCount++;
|
|
this->MoveToFirst();
|
|
}
|
|
this->MoveToNext();
|
|
while(!this->IsBegin())
|
|
{
|
|
if (!IsCurEmpty())
|
|
{
|
|
T *temp = this->GetCurData();
|
|
long i = this->GetCur();
|
|
ListNode<T*>*pos = this->GetCurPos();
|
|
this->MoveToPre();
|
|
if (*this->GetCurData() < *temp)
|
|
{
|
|
while(!this->IsBegin() && *this->GetCurData() < *temp)
|
|
{
|
|
this->MoveToPre();
|
|
}
|
|
this->InsertAfterCur(temp);
|
|
this->curPos = pos;
|
|
this->cur = i+1;
|
|
this->SetCurData(NULL);
|
|
DelCur();
|
|
}
|
|
else
|
|
{
|
|
this->MoveToNext();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DelCur();
|
|
nullCount++;
|
|
}
|
|
this->MoveToNext();
|
|
}
|
|
}
|
|
while(nullCount-- != NULL)
|
|
{
|
|
this->AddTail(NULL);
|
|
}
|
|
}
|
|
|
|
template<class T>
|
|
void PDList<T>::Arrange(int (*cmp)(const T&,const T&))
|
|
{
|
|
if (this->GetLength() < 2)
|
|
{
|
|
return;
|
|
}
|
|
|
|
this->MoveToFirst();
|
|
this->MoveToNext();
|
|
while(!this->IsBegin())
|
|
{
|
|
T *temp = this->GetCurData();
|
|
long i = this->GetCur();
|
|
ListNode<T*>*pos = this->GetCurPos();
|
|
this->MoveToPre();
|
|
if (cmp(*this->GetCurData(),*temp) > 0)
|
|
{
|
|
while(!this->IsBegin() && cmp(*this->GetCurData(),*temp) > 0)
|
|
{
|
|
this->MoveToPre();
|
|
}
|
|
this->InsertAfterCur(temp);
|
|
this->curPos = pos;
|
|
this->cur = i+1;
|
|
this->SetCurData(NULL);
|
|
DelCur();
|
|
}
|
|
else
|
|
{
|
|
this->MoveToNext();
|
|
}
|
|
|
|
this->MoveToNext();
|
|
}
|
|
}
|
|
|
|
|
|
#endif
|