How to identify a blank new line in an open txt file

Question

hi all
i'm reading a file, and i have to identify all the blank new lines.
does anybody can help me?
thanks to all !!
follows a sample of the code i'm writing:
fHandler := UTL_FILE.FOPEN(FileAttuale.Oracle_Input,FileAttuale.Nome_File, 'r');
-- Lettura file
BEGIN
WHILE 1 < 2 LOOP
Line_Number := Line_Number + 1;
-- Leggo riga per riga finche non viene lanciata la eccezione NO_DATA_FOUND
UTL_FILE.GET_LINE(fHandler, buf);
if (buf is a blank new line) then
end if;
END LOOP;
END;
documentation says:
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/u_file.htm
Because the line terminator character is not read into the buffer, reading blank lines returns empty strings.
but if i try
IF (BUF ='') THEN
do something
END IF;
IF (BUF is null) THEN
do something
END IF;
don't do nothing!!
thanks all
Edited by: Massimo T. on 4-mag-2011 12.05

Answer 1

13 is ^K also known as Vertical Tab No Massimo, it's ^M, that is Carriage Return : you have to consider Dec column, since ASCII function returns the decimal representation in the database character set of the first character of char.