Location:
f32file.h
Link against: efsrv.lib
class TFileText;
Reads and writes single lines of text to or from a file.
Defined in TFileText
:
Read()
, Seek()
, Set()
, TFileText()
, Write()
IMPORT_C void Set(RFile &aFile);
Sets the file to be read from, or written to.
This function must be called before Read()
, Write()
or Seek()
can be used.
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IMPORT_C TInt Read(TDes &aDes);
Reads single line text record into the specified descriptor.
The read operation begins at the current file position, and ends when a line delimiter character is read; a record has a maximum length of 256 characters.
If the maximum length of the descriptor is insufficient to hold the record, the function returns KErrTooBig and the descriptor is filled to its maximum length.
If Read()
is called when the current position is the end of the file (that is, after the last line delimiter in the file), KErrEof
is returned, and the length of the buffer is set to zero.
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IMPORT_C TInt Write(const TDesC &aDes);
Writes the contents of a descriptor to the end of a file.
A line delimiter is appended to the descriptor, and the current file position is set to the new end of file.
If the descriptor contains one or more paragraph delimiters, Read()
will treat the contents of the descriptor as more than one record.
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IMPORT_C TInt Seek(TSeek aMode);
Seeks to start or end of file.
It is only necessary to call this function before using Read()
because Write()
always seeks to the end of the file before writing.
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