Script Component: Copy A Row Into A Variable

HI, is it possible to copy a row from the Input0_ProcessInputRow into another variable of a synchronous script component. I have a script component that has three outputs. What I would like to do is the following:

At first iteration, copy entire row into a variable.

For the other rows, is business key cols is different from the previous row (the one copied at previous iteration) or type 2 columns :

1-direct previous row (from the variable) to second.output
2- direct current row to the first output
3- copy the current row into the variable

If the business key cols are the same and type 2 cols are the same:
1-Direct row to the third output

My problem is that when I declare a variable as Input0Buffer and then copy the current row in it, at each subsequent iterations, the variable is updated. What I want to do is to keep the value of the previous row. I know I can do it b are differenty copying the content of all columns into separate variables but since some script components will have 150+ columns, I would like to find a simpler way to do it (like a copy of the structure of the input buffer).

The reason I use a script component is that the lookups are not updated dynamically, the rows I need to process may not exist in the target table and once inserted, they are not retreived subsequently by the buffer.

Thank you,
Cco