119 lines
2.1 KiB
C++
119 lines
2.1 KiB
C++
//-----------------------------------------------------------------------------+
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// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
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// = FileName : TWArraysAr.cpp
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// = Version : ver2.0
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// = Author : xlc
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// = CreateDate : 2002-09-09
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// = Description: 类的定义
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// = Maintainers:
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//
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//-----------------------------------------------------------------------------+
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#include "StdAfx.h"
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#include "TWArraysAr.h"
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TWArraysAr::TWArraysAr(long unitSize)
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: m_iUnitSize(unitSize)
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{
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}
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TWArraysAr::~TWArraysAr()
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{
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}
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long TWArraysAr::GetUnitSize()const
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{
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return m_iUnitSize;
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}
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long TWArraysAr::GetUnit(long i)const
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{
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return i / GetUnitSize();
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}
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long TWArraysAr::GetSubIndex(long i)const
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{
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return i % GetUnitSize();
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}
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void TWArraysAr::Clear()
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{
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TWArchive::Clear();
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m_bufTable.Clear();
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}
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void TWArraysAr::Read(void *p, long size)
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{
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if (GetLength() - GetCur() < size)
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{
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size = GetLength() - GetCur();
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}
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char *pData = (char*)p;
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long i = 0;
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for (m_bufTable.MoveTo(GetUnit(GetCur())); i < size && !m_bufTable.IsOut(); m_bufTable.MoveToNext())
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{
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TWArrayAr &ar = m_bufTable.GetCurPData();
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if (i == 0)
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{
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ar.MoveTo(GetSubIndex(GetCur()));
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}
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else
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{
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ar.MoveToFirst();
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}
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long num = size - i;
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if (num > GetUnitSize() - ar.GetCur())
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{
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num = GetUnitSize() - ar.GetCur();
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}
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ar.Read(pData,num);
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pData += num;
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i += num;
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}
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}
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void TWArraysAr::Write(void *p, long size)
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{
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long iEndUnit = GetUnit(GetCur() + size - 1);
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while (m_bufTable.GetLength() <= iEndUnit)
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{
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TWArrayAr* pAr = new TWArrayAr(GetUnitSize());
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pAr->SetLength(GetUnitSize());
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m_bufTable.AddTail(pAr);
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}
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char *pData = (char*)p;
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long i = 0;
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for (m_bufTable.MoveTo(GetUnit(GetCur())); i < size; m_bufTable.MoveToNext())
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{
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TWArrayAr &ar = m_bufTable.GetCurPData();
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if (i == 0)
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{
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ar.MoveTo(GetSubIndex(GetCur()));
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}
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else
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{
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ar.MoveToFirst();
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}
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long num = size - i;
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if (num > GetUnitSize() - ar.GetCur())
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{
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num = GetUnitSize() - ar.GetCur();
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}
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ar.Write(pData,num);
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pData += num;
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i += num;
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}
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if ((GetCur() + size) > m_iLength)
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{
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m_iLength = GetCur() + size;
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}
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} |