cfile.hpp

bt848,bt878 a采集卡的探测

#ifndef _CFILE_HPP
#define _CFILE_HPP

#include <windows.h>
#include <tchar.h> // Make all functions UNICODE safe.
#include "CMemory.hpp"
#include "CString.hpp"

class CFile {

public:

	typedef enum {
		Normal,
		RdOnly,
		Shared
	} Mode;

protected:
	
	HANDLE	handle;		// Handle al CFile
	BOOL	WasCreatd;	// Flag para indicar si se creo el archivo

public:

	CFile() : WasCreatd(FALSE) , handle(INVALID_HANDLE_VALUE) {}

	CFile(LPTSTR File,Mode CMode = Normal,DWORD Beh = OPEN_ALWAYS)
		: WasCreatd(FALSE) , handle(INVALID_HANDLE_VALUE)
	{
		Open(File,CMode,Beh);
	}

	CFile(CString& File,Mode CMode = Normal,DWORD Beh = OPEN_ALWAYS)
		: WasCreatd(FALSE) , handle(INVALID_HANDLE_VALUE)
	{
		Open(File,CMode,Beh);
	}
	
	bool Open(LPTSTR File,Mode CMode = Normal,DWORD Beh = OPEN_ALWAYS);
	bool Open(CString& File,Mode CMode = Normal,DWORD Beh = OPEN_ALWAYS) { return Open(File.Ptr(),CMode,Beh); }
	bool IsOpen() const { return (handle!=INVALID_HANDLE_VALUE); }
	bool WasCreated() const { return WasCreatd==TRUE; }
	bool Close();

	bool Read(void* Buffer,DWORD Bytes) {
		DWORD BytesRd=0;
		return (ReadFile(handle,Buffer,Bytes,&BytesRd,NULL) && (BytesRd==Bytes) );
	}

	bool Read(void* Buffer,DWORD Bytes,DWORD& BytesRd) {
		BytesRd=0;
		return (ReadFile(handle,Buffer,Bytes,&BytesRd,NULL) && (BytesRd==Bytes) );
	}

	bool Write(void* Buffer,DWORD Bytes) {
		DWORD BytesWr=0;
		return (WriteFile(handle,Buffer,Bytes,&BytesWr,NULL) && (BytesWr==Bytes) );
	}

	bool Write(CMemory& blk) {
		DWORD BytesWr=0;
		return (WriteFile(handle,blk.Ptr(),blk.Size(),&BytesWr,NULL) && (BytesWr==blk.Size()) );
	}

	DWORD Seek(LONG Dist,DWORD MvMt=SEEK_SET) {
		return SetFilePointer(handle,Dist,NULL,MvMt);
	}

	bool Lock(DWORD Foff,DWORD Sz) {
		return LockFile(handle,Foff,0,Sz,0)==TRUE;
	}

	bool Unlock(DWORD Foff,DWORD Sz) {
		return UnlockFile(handle,Foff,0,Sz,0)==TRUE;
	}
	
	DWORD Size() {
		return GetFileSize(handle,NULL);
	}
	
	bool SetSize(DWORD Size);

	DWORD Pos() {
		return Seek(0,SEEK_CUR);
	}

	bool Flush() {
		return FlushFileBuffers(handle)==TRUE;
	}
	
	~CFile() {
		Close();
	}

};

// Some filenames related fns

// Wild matching function
bool Wild(LPTSTR pattern, LPTSTR string);

// Get Windows directory
CString GetWindowsDirectory();

// Get Temp directory
CString GetTempDirectory();

// To Delete files
bool DeleteFile(CString& c);

#endif