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<?php
if (isset ($_GET['plain'])){
header ('Content-Type: text/plain');
} else {
header ('Content-Type: text/calendar');
header ('Content-Disposition: attachment; filename=HebrewTools.ical');
}
require_once ('config.php');
require_once ('db.php');
function icalspecialchars ($text)
{
$text=str_replace(
["\\", "\n", ";", ","],
["\\\\","\\n","\\;","\\,"],
$text
);
$text=preg_replace ('/[\x00-\x1f\x7f]/','',$text);
return $text;
}
function icalline ($key,$val)
{
$line=$key.':';
$val=icalspecialchars ($val);
if (strlen ($val) + strlen ($line) > 75){
$split_at=75 - strlen ($line);
$line.=substr ($val,0,$split_at)."\r\n";
$val=substr ($val,$split_at);
$val_parts=str_split ($val,74);
foreach ($val_parts as $val)
$line.=' '.$val."\r\n";
} else {
$line.=$val."\r\n";
}
return $line;
}
echo "BEGIN:VCALENDAR\r\n";
echo icalline ('VERSION','2.0');
echo icalline ('PRODID','-//HebrewTools//NONSGML '.ICAL_NAME.' '.ICAL_VERSION.'//EN');
echo icalline ('METHOD','PUBLISH');
echo icalline ('X-WR-CALNAME',ICAL_NAME);
echo icalline ('X-WR-CALDESC',ICAL_DESC);
echo icalline ('X-PUBLISHED-TTL','PT12H'); /* update every 12h */
echo icalline ('URL','https://'.$_SERVER['HTTP_HOST']);
$events=isset($_GET['keywords']) ? get_events (explode (',',$_GET['keywords'])) : get_events();
foreach ($events as $event){
echo "BEGIN:VEVENT\r\n";
echo icalline ('UID','event-'.$event['id'].'@agenda.hebrewtools.org');
echo icalline ('SUMMARY',$event['title']);
echo icalline ('LOCATION',$event['location']);
echo icalline ('DTSTART',date ('Ymd',strtotime ($event['start_date'])));
if ($event['end_date']!=$event['start_date'])
echo icalline ('DTEND',date ('Ymd',strtotime ($event['end_date'])+24*3600));
$description=$event['description'];
$description.="\n\nKeywords: ".implode (', ',$event['keywords']);
$description.="\nSource: ".$event['source_name'];
echo icalline ("DESCRIPTION",$description);
echo "END:VEVENT\r\n";
}
echo "END:VCALENDAR\r\n";
|
