#ifndef __E3GLOGLOADBYFILE_H__
#define __E3GLOGLOADBYFILE_H__
#include "PubCommon\MemoryManager.h"
#include "PubCommon.h"
//------------------------
// 读取内存中的 LOG 文件
//------------------------
class CMoReader
{
public:
CMoReader(Win32Tools::CMemoryManager*
pMemMgr);
virtual ~CMoReader(
void);
public:
bool LoadFile(
char*
pFileMemory);
void GetMemLine(CMemLine*&
pMemLine);
bool IsEof();
private:
size_t GetBufSize(PCHAR pBuf);
bool ReadLine(CMemLine*& pMemLine);
// 读取一行数据
bool MoveToLineEnd();
// 移动到行尾
bool MoveToNextLine();
// 移动到下一行
private:
char* m_pMemory;
// 文件流的位置
char* m_pReadPos;
// 当前读取的位置
int m_nCount;
// 总计读取的行数
private:
Win32Tools::CMemoryManager*
m_pMemMgr;
};
#endif
#include
"stdafx.h"
#include "MoReader.h"
#include "PubCommon\FileFormatDefine.h"
CMoReader::CMoReader(Win32Tools::CMemoryManager*
pMemMgr)
: m_nCount(0)
, m_pMemMgr(pMemMgr)
, m_pMemory(NULL)
, m_pReadPos(NULL)
{
}
CMoReader::~CMoReader(
void)
{
}
bool CMoReader::LoadFile(
char*
pFileMemory)
{
// 加载信息
if(pFileMemory ==
NULL)
return false;
m_pMemory =
pFileMemory;
m_pReadPos =
pFileMemory;
return true;
}
void CMoReader::GetMemLine(CMemLine*&
pMemLine)
{
// 首行数据
pMemLine = (CMemLine*)m_pMemMgr->GetMemory(
sizeof(CMemLine));
pMemLine =
new (pMemLine) CMemLine;
CMemLine* pOld =
pMemLine;
while(
1)
{
// 依次追加的行
CMemLine* pNew = (CMemLine*)m_pMemMgr->GetMemory(
sizeof(CMemLine));
pNew =
new (pNew) CMemLine;
if(
false ==
ReadLine(pNew))
break;
if(*(pNew->m_pLine) ==
'=')
{
if(
3 <= ++m_nCount)
// 完整对象判断
{
break;
}
continue;
}
if(*(pNew->m_pLine) !=
'\0' && (NUMBER_ZERO !=
m_nCount))
{
pMemLine->m_pNextLine =
pNew;
pMemLine =
pNew;
}
}
if (
3 != m_nCount)
// 结尾非法对象处理
{
pOld->m_pNextLine =
NULL;
}
pMemLine =
pOld;
pMemLine = pMemLine->
m_pNextLine;
m_nCount =
1;
}
bool CMoReader::IsEof()
{
return (*m_pReadPos ==
FILE_END_CHAR);
}
size_t CMoReader::GetBufSize(PCHAR pBuf)
{
size_t iRelt(0);
while(*pBuf++ !=
'\0')
{
++
iRelt;
}
return iRelt;
}
bool CMoReader::MoveToLineEnd()
{
// 移动到行尾
if(*m_pReadPos ==
'\r' || *m_pReadPos ==
'\0' || *m_pReadPos ==
'\n' || *m_pReadPos ==
FILE_END_CHAR)
return false;
do
{
++
m_pReadPos;
}
while(*m_pReadPos !=
'\r' && *m_pReadPos !=
'\0' && *m_pReadPos !=
'\n' && *m_pReadPos !=
FILE_END_CHAR);
return true;
}
bool CMoReader::MoveToNextLine()
{
// 移动到下一行
MoveToLineEnd(); // 首先移动至行尾
if(*m_pReadPos ==
FILE_END_CHAR)
return false;
while(*m_pReadPos ==
'\r' || *m_pReadPos ==
'\n' || *m_pReadPos ==
'\0')
{
if(*m_pReadPos ==
FILE_END_CHAR)
return false;
++
m_pReadPos;
}
return true;
}
bool CMoReader::ReadLine(CMemLine*&
pMemLine)
{
// 读取一行数据
char* pBegin =
m_pReadPos;
if(MoveToLineEnd() ==
false)
return false;
char* pEnd =
m_pReadPos;
size_t iSize = pEnd -
pBegin;
pMemLine->m_pLine =
pBegin;
pMemLine->m_iLength =
iSize;
*pEnd =
'\0';
return MoveToNextLine();
}
转载于:https://www.cnblogs.com/hongjiumu/p/3561511.html
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