RosettaCodeData/Task/Calendar/Perl/calendar.pl

38 lines
896 B
Perl

#!/usr/bin/perl
use strict;
use warnings;
use Time::Local;
my @names = qw/ JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC/;
my $year = shift ||'2007';
for my $month (0..11) {
print " $names[$month] $year\n";
print calendar($year, $month), "\n\n";
}
sub calendar {
my ($year, $month) = @_;
my @mon_days = qw/31 28 31 30 31 30 31 31 30 31 30 31/;
++$mon_days[1] if $year % 4 == 0 && ($year % 400 == 0 || $year % 1
+00 != 0);
my $cal = " Sun Mon Tue Wed Thu Fri Sat\n";
# Months are indexed beginning at 0
my $time = timegm(0,0,0,1,$month,$year);
my $wday = (gmtime $time)[6];
$cal .= " " x $wday;
my $mday = 1;
while ($mday <= $mon_days[$month]) {
$cal .= sprintf "%4s", $mday++;
$cal .= "\n" if ($wday + $mday -1) % 7 == 0;
}
return $cal;
}
# Let's use this as a placeholder until a better solution arrives, OK?