How can I read/write OS Files from Forms?

Q

How can I read/write OS Files from Forms?

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A

OS files can be read/written from Forms using the TEXT_IO package in Forms. The TEXT_IO package has a datatype FILE_HANDLE. It also has procedures FCLOSE, GET_LINE, NEW_LINE, PUT, PUT_LINE & PUTF and a function FOPEN. Example:
DECLARE
file1 TEXT_IO.FILE_TYPE;
file2 TEXT_IO.FILE_TYPE;
str VARCHAR2(80);
BEGIN
file1 := TEXT_IO.FOPEN( 'input.txt','r' );
file2 := TEXT_IO.FOPEN( 'output.txt', 'w' );
TEXT_IO.GET_LINE( file1, str );
TEXT_IO.PUT_LINE( file2, str );
TEXT_IO.FCLOSE( file1 );
TEXT_IO.FCLOSE( file2 );
END;

2011-05-03, 4684👍, 0💬