class CInfo
{
public:
char szName[40];
char szPhone[40];
char szMobile[40];
char szAddress[40];
char szEmail[40];
char szEtc[1024-40*5-7];
char szn[3];
CInfo(){
memset(szName, 0 ,sizeof(char)*40);
memset(szPhone, 0 ,sizeof(char)*40);
memset(szMobile, 0 ,sizeof(char)*40);
memset(szAddress, 0 ,sizeof(char)*40);
memset(szEmail, 0 ,sizeof(char)*40);
memset(szEtc, 0 ,sizeof(char)*1024-40*5-7);
memset(szn,0,sizeof(szn));
strncpy(szn,_T("\r\n"),sizeof("\r\n"));
}
};
1.데이터 삽입(Insert)
void CFileDB::InsertInFile(CInfo &Info)
{
m_hFile = CreateFile(_T("c:\\test001.dat"), GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
DWORD nWrite = 0;
SetFilePointer(m_hFile,0,NULL,FILE_END);
//WriteFile(m_hFile,_T("\n"),sizeof("\n"),&nWrite,NULL);
if(m_hFile != INVALID_HANDLE_VALUE)
{
WriteFile(m_hFile,&Info,sizeof(Info),&nWrite,NULL);
}
CloseHandle(m_hFile);
}
2.데이터 조회(Select)
void CFileDB::SelectInFile(void)
{
UpdateData(TRUE);
DWORD dwStartTime, dwFinishTime;
CInfo Info;
memset(&Info,0,sizeof(Info));
m_hFile = CreateFile(_T("c:\\test001.dat"), GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
SetFilePointer(m_hFile,0,NULL,FILE_BEGIN);
int nNumOfData = GetFileSize(m_hFile,NULL)/sizeof(CInfo);
DWORD nRead = 0;
if(m_hFile != INVALID_HANDLE_VALUE)
{
for(int i = 0 ; i< nNumOfData ; ++i)
{
SetFilePointer(m_hFile,sizeof(Info)*i,NULL,FILE_BEGIN);
ReadFile(m_hFile,&Info,sizeof(Info),&nRead,NULL);
if(m_strNameSearch.Compare(Info.szName) == 0 )
{
// 데이타를 표시한다.
m_uIndex = i;
m_strName = Info.szName;
m_strPhone = Info.szPhone;
m_strMobile = Info.szMobile;
m_strAddress = Info.szAddress;
m_strEmail = Info.szEmail;
dwFinishTime = GetTickCount();
m_uTime = 0;
}
}
}
CloseHandle(m_hFile);
UpdateData(FALSE);
}
3.데이터 수정(Update)
void CFileDB::UpdateInFile(void)
{
UpdateData(TRUE);
DWORD dwStartTime, dwFinishTime;
CInfo Info;
memset(&Info,0,sizeof(Info));
m_hFile = CreateFile(_T("c:\\test001.dat"), GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
SetFilePointer(m_hFile,0,NULL,FILE_BEGIN);
int nNumOfData = GetFileSize(m_hFile,NULL)/sizeof(CInfo);
DWORD nRead = 0;
DWORD nWrite = 0;
if(m_hFile != INVALID_HANDLE_VALUE)
{
for(int i = 0 ; i< nNumOfData ; ++i)
{
SetFilePointer(m_hFile,sizeof(Info)*i,NULL,FILE_BEGIN);
ReadFile(m_hFile,&Info,sizeof(Info),&nRead,NULL);
if(m_strNameSearch.Compare(Info.szName) == 0 )
{
// 데이타를 표시한다.
m_uIndex = i;
strncpy(Info.szName,m_strName,strlen(m_strName));
strncpy(Info.szPhone, m_strPhone,strlen(m_strPhone));
strncpy(Info.szMobile, m_strMobile,strlen(m_strMobile));
strncpy(Info.szAddress, m_strAddress,strlen(m_strAddress));
strncpy(Info.szEmail, m_strEmail,strlen(m_strEmail));
dwFinishTime = GetTickCount();
m_uTime = 0;
SetFilePointer(m_hFile,sizeof(Info)*i,NULL,FILE_BEGIN);
WriteFile(m_hFile,&Info,sizeof(Info),&nWrite,NULL);
MessageBox(_T("수정이 완료되었습니다."));
}
}
}
CloseHandle(m_hFile);
UpdateData(FALSE);
}
4.데이터 삭제(Delete)
void CFileDB::DeleteInFile(void)
{
CInfo Info;
DWORD nRead = 0;
DWORD nWrite = 0;
BOOL bCompare = FALSE;
m_hFile = CreateFile(_T("c:\\test001.dat"), GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
SetFilePointer(m_hFile,0,NULL,FILE_BEGIN);
int nNumOfData = GetFileSize(m_hFile,NULL)/sizeof(CInfo);
if(m_hFile != INVALID_HANDLE_VALUE)
{
for(int i = 0 ; i< nNumOfData ; ++i)
{
SetFilePointer(m_hFile,sizeof(Info)*i,NULL,FILE_BEGIN);
ReadFile(m_hFile,&Info,sizeof(Info),&nRead,NULL);
if(m_strName.Compare(Info.szName) == 0 )
{
bCompare = TRUE;
}
if(bCompare)
{
//바로 뒤에 있는 데이터를 읽어서
SetFilePointer(m_hFile,sizeof(Info)*(i+1),NULL,FILE_BEGIN);
ReadFile(m_hFile,&Info,sizeof(Info),&nRead,NULL);
//데이터를 삭제한 곳에 덮어쓴다.
SetFilePointer(m_hFile,sizeof(Info)*i,NULL,FILE_BEGIN);
WriteFile(m_hFile,&Info,sizeof(Info),&nWrite,NULL);
}
}
}
if(bCompare)
{
CInfo blank;
memset(&blank,0,sizeof(CInfo));
SetFilePointer(m_hFile,sizeof(CInfo)*(nNumOfData -1),NULL,FILE_BEGIN);
WriteFile(m_hFile,&blank,sizeof(blank),&nWrite,NULL);
MessageBox(_T("삭제가 완료되었습니다."));
}
CloseHandle(m_hFile);
}
