- my $date = shift || '';
- my( $m, $y ) = ( 0, 0 );
- if ( $date =~ /^(\d{4})-(\d{2})-\d{2}$/ ) { #PostgreSQL date format
- ( $m, $y ) = ( $2, $1 );
- } elsif ( $date =~ /^(\d{1,2})-(\d{1,2}-)?(\d{4}$)/ ) {
- ( $m, $y ) = ( $1, $3 );
+ my( $m, $y ) = (0, 0);
+ if ( scalar(@_) ) {
+ my $date = shift;
+ if ( $date =~ /^(\d{4})-(\d{1,2})-\d{1,2}$/ ) { #PostgreSQL date format
+ ( $m, $y ) = ( $2, $1 );
+ } elsif ( $date =~ /^(\d{1,2})-(\d{1,2}-)?(\d{4}$)/ ) {
+ ( $m, $y ) = ( $1, $3 );
+ } else {
+ die "unrecognized expiration date format: $date";
+ }