/usr/share/doc/libdata-ical-perl/examples/ical2html.pl is in libdata-ical-perl 0.22+dfsg-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | #!/usr/bin/perl
#
# Contributed by: Tatsuhiko Miyagawa <miyagawa@bulknews.net>
#
use strict;
use warnings;
use Data::ICal;
use DateTime;
use DateTime::Format::ISO8601;
use List::Util qw(min max);
use Math::BigInt;
my $axis = 15; # 15 minutes
my @events = map {
my $cal = Data::ICal->new(filename => $_);
@{$cal->entries};
} @ARGV;
my $iso8601 = DateTime::Format::ISO8601->new;
my(%dates, %where);
for my $event (@events) {
next unless $event->ical_entry_type eq 'VEVENT';
$event->{__dtstart} = $iso8601->parse_datetime( prop($event, 'DTSTART') );
$event->{__dtend} = $iso8601->parse_datetime( prop($event, 'DTEND') );
my $loc = prop($event, 'LOCATION');
push @{$dates{$event->{__dtstart}->ymd}{$loc}}, $event;
$where{$loc}++;
}
for my $date (keys %dates) {
for my $loc (keys %{$dates{$date}}) {
@{$dates{$date}{$loc}} = sort { $a->{__dtstart} cmp $b->{__dtstart} } @{$dates{$date}{$loc}};
}
my @events = values %{$dates{$date}};
my $start = (sort(map $_->[0]->{__dtstart}, @events))[0];
my $end = (sort(map $_->[-1]->{__dtend}, @events))[-1];
my $unit = determine_unit(map @$_, @events);
my $output;
$output = qq(<h3 class="date-header">) . $start->strftime('%b %d, %Y') . qq(</h3>\n);
$output .= qq(<table class="timetable">\n<tr><th>Time</th>);
my $locmap = location_map();
for my $loc ( sort { $locmap->{$a} <=> $locmap->{$b} } keys %where) {
$output .= qq(<th class="room">$loc</th>);
}
$output .= qq(</tr>\n);
my $curr = $start->clone;
my $fill_slots;
while ($curr < $end) {
$output .= qq(<tr>);
if ($curr->delta_ms($start)->minutes % $axis == 0) {
use integer;
my $row = $axis / $unit;
$output .= qq(<td class="hour" rowspan="$row">) . $curr->strftime('%H:%M') . qq(</td>);
}
for my $loc ( sort { $locmap->{$a} <=> $locmap->{$b} } keys %where ) {
my $event_per_loc = $dates{$date}{$loc};
if ($event_per_loc->[0] && $event_per_loc->[0]->{__dtstart} <= $curr) {
use integer;
my $event = shift @$event_per_loc;
my @stuff = split / \- /, prop($event, 'SUMMARY');
my $author = pop @stuff if @stuff >= 2;
my $title = join " - ", @stuff;
my $url = prop($event, 'URL');
my $row = $event->{__dtend}->delta_ms($event->{__dtstart})->delta_minutes / $unit;
$output .= qq(<td class="session" rowspan="$row">);
$output .= qq(<span class="title"><a href="$url">$title</a></span>);
$output .= qq(<br /><span class="author">$author</span>) if $author;
$output .= qq(</td>);
$fill_slots->{$loc} = $row - 1;
} elsif ($fill_slots->{$loc}) {
$fill_slots->{$loc}--;
} else {
my $next = $event_per_loc->[0] ? $event_per_loc->[0]->{__dtstart} : $end;
my $label = $event_per_loc->[0] ? '(break)' : '(empty)';
my $row = $next->delta_ms($curr)->delta_minutes / $unit;
$output .= qq(<td class="empty" rowspan="$row">$label</td>); # break
$fill_slots->{$loc} = $row - 1;
}
}
$curr->add( minutes => $unit );
$output .= qq(</tr>\n);
}
$output .= qq(</table>\n);
print $output;
}
sub location_map {
return {
'Tsuda Hall' => 0,
'T101+102' => 1,
};
}
sub determine_unit {
my @events = @_;
my @dates = sort map { $_->{__dtstart}, $_->{__dtend} } @events;
my(@diffs, $prev);
for my $date (@dates) {
if ($prev) {
my $diff = $date->delta_ms($prev);
if ($prev and $diff->delta_minutes) {
push @diffs, $diff->delta_minutes;
}
}
$prev = $date;
}
return Math::BigInt::bgcd(@diffs)->numify;
}
sub prop {
my($event, $key) = @_;
my $v = $event->property($key) or return;
$v->[0]->value;
}
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