www.pudn.com > acdx.rar > TransactionFile.h

#if !defined(TransactionFile_H) 
#define TransactionFile_H 
 
 
 
#include  
using namespace std; 
 
 
#include "Lock.h" 
#include "SysEvent.h" 
 
//////////////////////////////////////////////////////////////////////////////// 
// TransactionFile 
// 
// Purpose: text file class 
 
//##ModelId=424BB63F023A 
class TransactionFile : 
	public Lock, 
	public SysEvent 
{ 
	//##ModelId=424BB63F024B 
	long	m_readOffset;			// current read offset 
	//##ModelId=424BB63F0259 
	long	m_writeOffset;			// current write offset 
	//##ModelId=424BB63F025A 
	DWORD	m_readWait;				// time (ms) to wait after read 
	//##ModelId=424BB63F0269 
	DWORD	m_writeWait;			// time (ms) to wait after write 
	//##ModelId=424BB63F0278 
	DWORD	m_openFlags;			// flags used to open file 
	//##ModelId=424BB63F027A 
	string	m_name;					// name of file 
 
public: 
	//##ModelId=424BB63F0288 
	HANDLE	m_hFile; 
 
 
	//##ModelId=424BB63F0289 
	TransactionFile (); 
	//##ModelId=424BB63F0298 
	~TransactionFile ();  
 
	// show error 
	//##ModelId=424BB63F0299 
	void	showLastError	(); 
	//##ModelId=424BB63F029A 
	bool	invalidFile		(); 
 
	// open methods 
	//##ModelId=424BB63F029B 
	bool	create			( string & fileName ); 
	//##ModelId=424BB63F02A8 
	bool	open			( string & fileName ); 
	//##ModelId=424BB63F02AA 
	bool	openAlways		( string & fileName ); 
	//##ModelId=424BB63F02B8 
	bool	open			( string & fileName, DWORD openFlags ); 
	//##ModelId=424BB63F02C6 
	void	close			(); 
 
	// file info/position methods 
	//##ModelId=424BB63F02C7 
	bool	setPosition		( DWORD position, bool read = true ); 
	//##ModelId=424BB63F02D6 
	long	size			(); 
	//##ModelId=424BB63F02D7 
	bool	offsetPosition	( DWORD offset, bool read = true  ); 
 
	// clear the file 
	//##ModelId=424BB63F02E6 
	void	clear			(); 
 
	// read/write methods 
	//##ModelId=424BB63F02E7 
	bool	write			( LPTSTR pBuffer, DWORD noToWrite, bool wait = true ); 
	//##ModelId=424BB63F02F6 
	bool	read			( LPTSTR pBuffer, DWORD noToRead, bool wait = true ); 
 
	//##ModelId=424BB63F0306 
	void    operator <<		( string & buffer ) 
	{ 
		write( (LPTSTR) buffer.c_str(), buffer.size() ); 
	} 
 
	//##ModelId=424BB63F0308 
	operator HANDLE ()  
	{  
		return m_hFile;  
	} 
 
	//##ModelId=424BB63F0309 
	void setReadWait ( DWORD wait ) 
	{ m_readWait = wait; } 
 
	//##ModelId=424BB63F0316 
	void setWriteWait ( DWORD wait ) 
	{ m_writeWait = wait; } 
 
}; 
 
 
void operator << ( stringstream & strm, TransactionFile & file ); 
void operator << ( TransactionFile & file, stringstream & strm ); 
 
 
#endif