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bayern-zuendfunk.pl
executable file
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bayern-zuendfunk.pl
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#!/usr/bin/perl
# 2013,2018,2022 [email protected]
# AGPLv3
use strict;
use WWW::Mechanize;
use HTML::Entities;
use HTML::TreeBuilder;
use DateTime::Format::Strptime;
use DateTime::Format::ICal;
use Data::ICal;
use Data::ICal::Entry::Event;
use Data::ICal::Entry::TimeZone;
use Data::ICal::Entry::TimeZone::Daylight;
use Data::ICal::Entry::TimeZone::Standard;
use Time::HiRes;
use Try::Tiny;
use utf8;
use warnings;
my $defaultDauer=119; # angenommene Dauer eines Events in Minuten (steht nicht im Programm, wird aber für Kalendereintrag gebraucht)
my $url="http://www.br.de/radio/bayern2/sendungen/zuendfunk/veranstaltungen-praesentationen/index.html";
# Gegen "wide character"-Warnungen
binmode STDOUT, ":utf8";
# convert datetime to DTSTART/DTEND property value
sub dt2icaldt {
my ($dt)=@_;
my $icalformatdt=DateTime::Format::ICal->format_datetime($dt);
if (my ($id,$string)=$icalformatdt=~/^TZID=(.+?):(.+)$/) {
return [ $string, {TZID => $id} ];
}
else {
return $icalformatdt;
}
}
# convert datetime to DTSTART/DTEND property value for allday events
sub dt2icaldt_fullday {
my ($dt)=@_;
return [ $dt->ymd(''),{VALUE=>'DATE'} ];
}
my $datumZeitFormat=DateTime::Format::Strptime->new('pattern'=>'%A, %d. %B %Y, %H:%M Uhr','time_zone'=>'Europe/Berlin','locale'=>'de_DE');
my $mech=WWW::Mechanize->new();
$mech->get($url) or die($!);
my @events;
my @visitedPages;
foreach my $eventPage ($mech->find_all_links(class_regex=>qr/link_article contenttype_calendar/)) {
next if (grep { $eventPage->url() eq $_ } @visitedPages);
push(@visitedPages,$eventPage->url());
$mech->get($eventPage);
my $tree=HTML::TreeBuilder->new_from_content($mech->content());
my $event;
# Titel
$event->{'titel'}=$tree->look_down('_tag'=>'meta','name'=>'DCTERMS.title')->attr('content');
# Entferne "Zündfunk präsentiert" am Anfang
$event->{'titel'}=~s/^Zündfunk präsentiert:?\s+//i;
# Kurze Beschreibung
my $kurztext=$tree->look_down('_tag'=>'meta','name'=>'description')->attr('content');
# Kalenderbeschreibungen
my @calendartexte=map{ $_->as_trimmed_text } $tree->look_down('_tag'=>'p','class'=>'calendar_text');
@calendartexte=grep($_,@calendartexte);
# Lange Beschreibungen
my @langtexte=map{ $_->as_trimmed_text } $tree->look_down('_tag'=>'p','class'=>'copytext');
@langtexte=grep($_,@langtexte);
# Alle Beschreibungen zusammenfügen
$event->{'beschreibung'}=join(
"\n\n",
($kurztext,join("\n\n",
(join("\n",@calendartexte),join("\n",@langtexte)))));
# Link
$event->{'url'}=$mech->uri()->as_string;
# Gelegentlich gibt's mehr als einen Termin:
my @termine;
foreach my $detail_calendar_item ($tree->look_down('_tag'=>'div','class'=>qr/detail_calendar_item/)) {
# Beginn
my $datumZeit=($tree->look_down('_tag'=>'p','class'=>'calendar_time'))->as_trimmed_text;
$event->{'beginn'}=$datumZeitFormat->parse_datetime($datumZeit);
# Ende=Beginn+3h
$event->{'ende'}=$event->{'beginn'}->clone();
$event->{'ende'}->add(minutes=>$defaultDauer);
# Ort
try {
$event->{'ort'}=($tree->look_down('_tag'=>'span','class'=>'calendar_title'))->as_trimmed_text;
# Entferne Doppelpunkt am Ende
$event->{'ort'}=~s/:$//;
};
# Überspringe doppelte Termine
next if (grep { $event->{'beginn'} eq $_ } @termine);
push(@termine,$event->{'beginn'});
push(@events,$event);
}
}
# Create Datestamp for dtstamp
my @stamp=localtime;
my $dstamp = sprintf("%d%02d%02dT%02d%02d%02dZ",
$stamp[5] + 1900,
$stamp[4] + 1,
$stamp[3],
$stamp[2],
$stamp[1],
$stamp[0]);
my $calendar=Data::ICal->new();
$calendar->add_properties(method=>"PUBLISH",
"X-PUBLISHED-TTL"=>"P1D",
"X-WR-CALNAME"=>"Zündfunk",
"X-WR-CALDESC"=>"Zündfunk Veranstaltungstipps");
# Add VTIMEZONE
my $tz="Europe/Berlin";
my $vtimezone=Data::ICal::Entry::TimeZone->new();
$vtimezone->add_properties(tzid=>$tz);
my $tzDaylight=Data::ICal::Entry::TimeZone::Daylight->new();
$tzDaylight->add_properties(
tzoffsetfrom => "+0100",
tzoffsetto => "+0200",
dtstart => "19700329T020000",
tzname => "CEST",
rrule => "FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU"
);
$vtimezone->add_entry($tzDaylight);
my $tzStandard=Data::ICal::Entry::TimeZone::Standard->new();
$tzStandard->add_properties(
tzoffsetfrom => "+0200",
tzoffsetto => "+0100",
dtstart => "19701025T030000",
tzname => "CET",
rrule => "FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU"
);
$vtimezone->add_entry($tzStandard);
$calendar->add_entry($vtimezone);
my $count=0;
foreach my $event (@events) {
# Create uid
my @tm=localtime();
my $uid=sprintf("%d%02d%02d%02d%02d%02d%s%02d\@geierb.de",
$tm[5] + 1900, $tm[4] + 1, $tm[3], $tm[2],
$tm[1], $tm[0], scalar(Time::HiRes::gettimeofday()), $count);
my $eventEntry=Data::ICal::Entry::Event->new();
$eventEntry->add_properties(
uid=>$uid,
summary => $event->{'titel'},
description => $event->{'beschreibung'},
dtstart => dt2icaldt($event->{'beginn'}),
# duration=>'PT3H',
dtend => dt2icaldt($event->{'ende'}),
dtstamp=>$dstamp,
class=>"PUBLIC",
organizer=>"MAILTO:foobar",
location=>$event->{'ort'},
url=>$event->{'url'},
);
$calendar->add_entry($eventEntry);
$count++;
}
die("Keine Einträge") if ($count==0);
print $calendar->as_string;