logfile.cpp

gps对时

// LogFile.cpp: implementation of the CLogFile class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "regioncomm.h"
#include "LogFile.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
TCHAR * CLogFile::szLogFile = _T("RegionCom.LOG");

CLogFile::CLogFile()
{
	m_hFile = INVALID_HANDLE_VALUE;
}

CLogFile::~CLogFile()
{

}

BOOL CLogFile::CreateLogFile()
{
	TCHAR szPath[MAX_PATH];
	GetCurrentDirectory(MAX_PATH, szPath);
	if (szPath[strlen(szPath)-1] != '\\')
		_tcscat(szPath, "\\");
	_tcscat(szPath, szLogFile);

	m_hFile = CreateFile(szPath, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE, (HANDLE)NULL);
	if (m_hFile == INVALID_HANDLE_VALUE) {
		m_hFile = CreateFile(szPath, GENERIC_WRITE, 0, NULL, CREATE_NEW, FILE_ATTRIBUTE_ARCHIVE, (HANDLE)NULL);
		if (m_hFile == INVALID_HANDLE_VALUE) {
			MessageBox(NULL, _T("无法打开或创建日志记录文件！"), _T("错误"), MB_OK | MB_ICONSTOP);
			return FALSE;
		}
	} else 
		SetFilePointer(m_hFile, 0, NULL, FILE_END);
	return TRUE;
}

void CLogFile::AddLogData(CString pStr)
{
	DWORD dwWritten;

	if (m_hFile == INVALID_HANDLE_VALUE) return;

	CTime t = CTime::GetCurrentTime();
	CString str = t.Format("%Y.%m.%d %H:%M:%S  ")+pStr+CString("\r\n");

	if (!WriteFile(m_hFile, (LPVOID)((LPCTSTR)str), str.GetLength(), &dwWritten, NULL))
	{	
		CloseHandle(m_hFile);
		m_hFile = INVALID_HANDLE_VALUE;
	}
	else
		FlushFileBuffers(m_hFile);
}


void CLogFile::CloseLogFile()
{
   if (m_hFile != INVALID_HANDLE_VALUE) 
	   CloseHandle(m_hFile);
}