how i filehandle management line?

i have subroutine takes filehandle an argument. i filehandle record route specified management line? i don't wish any guess record myself, i only wish pass off subroutine, advantage an array hashes parsed information file.

here's management line quarrel i'm controlling looks like:

$ ./getfile.pl /path/to/some/file.csv

here's commencement subroutine i'm job looks like:

sub parse {
    $handle = shift;
    @data   = <$handle>;
    while (my $line = shift(@data)) {
      # stuff
    }
}