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
|
#!/usr/bin/perl
use strict;
use warnings;
use File::Slurp;
use Text::vFile::asData;
use Digest::MD5 qw(md5_hex);
use DateTime;
use CGI;
my $file = -e 'Holidays' ? 'Holidays' : '/usr/local/apache/htdocs/intranet/database/Holidays';
=head1 NAME
holidays_ical - scrape the Holidays wiki page into ics
=head1 DESCRIPTION
So this is why I wanted an iCal generator/parser.
We have an intranet, with a page for who's going to be out of the office
which blech suggested might be good to have available as .ics.
The page is structured roughly like so:
= 2004
== February
* RichardClamp
** 1st - 3rd Baying at the moon
This script scrapes that page and makes it available as a vCalendar.
It's called as a cgi so you can subscribe to it with iCal.app and
phpICal.
=head1 AUTHOR
Richard Clamp <richardc@unixbeard.net>
=cut
# horrible stateful stuff, but easier than driving Template::Extract
my ($year, $month, $who);
my %months = (
January => 1, February => 2, March => 3, April => 4, May => 5, June => 6,
July => 7, August => 8, September => 9, October => 10, November => 11,
December => 12 );
sub guesstimate_event {
my $event = shift;
my $when = $event;
my ($firstday, $lastday);
if ($when =~ /(\d+)(?:st|nd|rd|th)?\s*(?:to|-)\s*(\d+)/i) {
#print "From $1 to $2: $event\n";
($firstday, $lastday) = ($1, $2);
}
elsif ($when =~ /(\d+)/) {
($firstday, $lastday) = ($1, $1);
}
else {
warn "didn't handle $event";
return;
}
my $start = DateTime->new(
year => $year, month => $months{ $month }, day => $firstday,
);
my $end = DateTime->new(
year => $year, month => $months{ $month }, day => $lastday
)->add(
days => 1,
( $firstday > $lastday ? ( months => 1 ) : () ) # 28th - 2nd probably means it went over a month
);
return {
type => 'VEVENT',
properties => {
SUMMARY => [ { value => $who } ],
DESCRIPTION => [ { value => $event } ],
DTSTART => [ { value => $start->ymd(''),
param => { VALUE => 'DATE' },
} ],
DTEND => [ { value => $end->ymd(''),
param => { VALUE => 'DATE' },
} ],
UID => [ { value => md5_hex( "$year $month $who - $event" ),
} ],
},
};
}
my $cal = {
type => 'VCALENDAR',
properties => {
'X-WR-CALNAME' => [ { value => "Fotango Holidays" } ],
},
objects => [],
};
for (read_file( $file )) {
next if /^\s*$/;
/^= (.*)/ and do { $year = $1; next };
/^== (.*)/ and do { $month = $1; next };
/^\* (.*)/ and do { $who = $1; next };
/^\** (.*)/ and do {
push @{ $cal->{objects} }, guesstimate_event( $1 );
next;
};
# warn "unhandled line: $_";
}
print CGI->header('text/calendar');
print map "$_\n", Text::vFile::asData->generate_lines( $cal );
|
