($wkno, $year) = Week_of_Year($year, $month, $day);
my ($fa_wkno, $fa_yr) = Week_of_Year($fa_year, $fa_month, $fa_day);
$delta = ($fa_yr == $year) ? ($wkno - $fa_wkno) : ( ($year-$fa_yr-1)*52 + (52-$fa_wkno+$wkno) );
- } elsif($unit eq 'month') {
- $delta = ($fa_year == $year)
- ? ($month - $fa_month)
- : ( ($year-$fa_year-1)*12 + (12-$fa_month+$month) );
- } elsif( $unit eq 'year' ) {
- $delta = _delta_units( [ $fa_year, $fa_month, $fa_day ], [ $year, $month, $day ], 'year' );
+ } elsif( $unit eq 'month' || $unit eq 'year' ) {
+ $delta = _delta_units( [$fa_year, $fa_month, $fa_day], [$year, $month, $day], $unit );
}
if($frequency->{'unitsperissue'} == 1) {
$issueno = $delta * $frequency->{'issuesperunit'} + $subscription->{'countissuesperunit'};
sub _get_next_date_month {
my ($subscription, $freqdata, $year, $month, $day) = @_;
- my $fa_day;
- (undef, undef, $fa_day) = split /-/, $subscription->{firstacquidate};
+ my @newissue; # ( yy, mm, dd )
+ my $delta_days = int( 30 / $freqdata->{issuesperunit} );
- if ($subscription->{countissuesperunit} + 1 > $freqdata->{issuesperunit}){
- $subscription->{countissuesperunit} = 1;
- ($year,$month,$day) = Add_Delta_YM($year,$month,$day, 0,
- $freqdata->{unitsperissue});
- my $days_in_month = Days_in_Month($year, $month);
- $day = $fa_day <= $days_in_month ? $fa_day : $days_in_month;
- } else {
- # Try to guess the next day in month
- my $days_in_month = Days_in_Month($year, $month);
- my $delta_days = int(($days_in_month - ($fa_day - 1)) / $freqdata->{issuesperunit});
- ($year,$month,$day) = Add_Delta_Days($year, $month, $day, $delta_days);
+ if( $freqdata->{issuesperunit} == 1 ) {
+ # Add full months
+ @newissue = Add_Delta_YM(
+ $year, $month, $day, 0, $freqdata->{"unitsperissue"} );
+ } elsif ( $subscription->{countissuesperunit} < $freqdata->{issuesperunit} ) {
+ # Add rounded number of days based on frequency.
+ @newissue = Add_Delta_Days( $year, $month, $day, $delta_days );
$subscription->{countissuesperunit}++;
+ } else {
+ # We finished a cycle of issues within a unit.
+ # Subtract delta * (issues - 1), add 1 month
+ @newissue = Add_Delta_Days( $year, $month, $day,
+ -$delta_days * ($freqdata->{issuesperunit} - 1) );
+ @newissue = Add_Delta_YM( @newissue, 0, 1 );
+ $subscription->{countissuesperunit} = 1;
}
-
- return ($year, $month, $day);
+ return @newissue;
}
sub _get_next_date_year {