CFile

CFile is a C++ class that is provided to simplify 825 file operations. CFile is a wrapper class around the standard C library FILE object. CFile also provides some useful features such as baud rate setting for the 825 serial ports.

Constructors

• CFile(void);
• CFile(const string& strFilename);
• CFile(const char* pszfilename);

These constructors just create a CFile object without opening a file.

• CFile(const string& strFilename, const string& strMode);
• CFile(const string& strFilename, const char* pszMode);
• CFile(const char* pszFilename, const string& strMode);
• CFile(const char* pszFilename, const char* pszMode);

These constructors construct the file object and attempt to open the file.

CFile fileLog("/mnt/fl1/log.txt", "a");
if(fileLog.IsOpen())
{
     fileLog.Print("Gross %s Tare %s Net %s\r\n", FormatGrossWt(1).c_str(), FormatTareWt(1).c_str(), FormatNetWt(1).c_str()); 
     fileLog.Close();
}

Member Functions

Open

Opens a specified file, or using the filename already stored in the object.

• bool Open(const string& strFilename, const string& strMode);
• bool Open(const string& strFilename, const char* pszMode);
• bool Open(const char* pszFilename, const string& strMode);
• bool Open(const char* pszFilename, const char* pszMode);
• bool Open(const char* pszMode);

Parameters

• strFilename - filename
• pszFilename - filename
• strMode - mode
• pszMode - mode

Return

Returns true if successful or false if unsuccessful.

Close

Closes the file

• void Close(void);

Parameters

Function does not accept any parameters

Result

Function does not return any result.

SetSerial

bool SetSerial(baud_index baud, data_bit_index = data8, parity_index = parityNone, stop_bit_index = stopOne);

ReadLine

bool ReadLine(std::string& str);

DeleteFile

static bool DeleteFile(std::string& filepath); static bool DeleteFile(const char* filepath);

bool DeleteFile(void);

IsReady

bool IsReady(void);

SetRTS

bool SetRTS(bool on = true);

GetFile

FILE* GetFile(void);

Print

void Print(const std::string& fmt, ...); void Print(const char * fmt, va_list& args); void Print(const std::string& fmt, va_list& args); void Print(const char * fmt, va_list& args);

SetNonBlocking

void SetNonBlocking(void);

Read

bool Read(void * ptr, size_t size);

Write

bool Write(void * buf, size_t size);

GetBytesRead

size_t GetBytesRead(void);

GetbytesWritten

size_t GetBytesWritten(void);

Seek

bool Seek(long int offset, long int origin = SEEK_SET);