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<?php
/********************************************************************************
* Modified from phpicalendar 2.0a distribution by Jim Hu
* philosophical changes
* - instead of having separate generators, use a date range for all views (done)
* - change the rss generation method to conform to standards(not done)
* PHP note: #@ is error control operator to suppress execution halt on error
* - used below to deal with undef?
*********************************************************************************/
define('BASE', '../');
include(BASE.'functions/ical_parser.php');
if ($enable_rss != 'yes') {
die ("RSS feeds are not enabled on this site.");
}
//set the range of days to return based on the view chosen
$rssview = $_GET['rssview'];
if (!$getdate){$getdate = date("Ymd");}
switch ($rssview){
case 'day':
$fromdate = $getdate;
$todate = $getdate;
$theview = $lang['l_day'];
break;
case 'month':
$parse_month = date ("Ym", strtotime($getdate));
$fromdate = ($parse_month *100) + 1;
$nextmonth = ($parse_month +1) * 100; #should give the 0th day of following month
$todate = date('Ymd',strtotime($nextmonth));
$theview = date('M Y',strtotime($fromdate));
break;
case 'daysfrom':
$fromdate = $getdate;
$todate = $getdate + $_GET['days'];
#print "from:$fromdate to: $todate<br>";
$theview = $_GET['days']." days from ".date('n/d/Y',strtotime($fromdate));
break;
case 'daysto':
$todate = $getdate;
$fromdate = $getdate - $_GET['days'];
#print "from:$fromdate to: $todate<br>";
$theview = $_GET['days']." days before ".date('n/d/Y',strtotime($todate));
break;
case 'range':
$fromdate = $_GET['from'];
$todate = $_GET['to'];
$theview = date('n/d/Y',strtotime($fromdate)).'-'.date('n/d/Y',strtotime($todate));
break;
default:
#default to week
$fromdate = dateOfWeek($getdate, $week_start_day);
$todate = $fromdate + 6;
$theview = $lang['l_week']." of ".date('n/d/Y',strtotime($fromdate));
}
//Set calendar or calendar directory name for feed
//Note that this depends on other modifications I've made to
//allow phpicalendar to use calendar subdirectories - see bbs
$cal_displayname = str_replace("32", " ", $cal);
if ($cal == $ALL_CALENDARS_COMBINED) {
$temp = explode("/",$calendar_path);
$cal_displayname = str_replace("32"," ",ucfirst(array_pop($temp)));
}
$events_count = 0;
// calculate a value for Last Modified and ETag
if ($cal == $ALL_CALENDARS_COMBINED) {
$filemod = filemtime("$calendar_path");
}else{
$filemod = filemtime("$calendar_path/$cal.ics");
}
$filemodtime = date("r", $filemod);
//send relevant headers
header ("Last-Modified: $filemodtime");
header ("ETag:\"$filemodtime\"");
// checks the user agents headers to see if they kept track of our
// stuff, if so be nice and send back a 304 and exit.
if ( ($_SERVER['HTTP_IF_MODIFIED_SINCE'] == $filemodtime) || ($_SERVER['HTTP_IF_NONE_MATCH'] == $filemodtime))
{
header ("HTTP/1.1 304 Not Modified");
exit;
}
//If client needs new feed - make the header
$rss = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"."\n";
$rss .= '<!DOCTYPE rss PUBLIC "-//Netscape Communications//DTD RSS 0.91//EN" "http://my.netscape.com/publish/formats/rss-0.91.dtd">'."\n";
$rss .= '<rss version="0.91">'."\n";
$rss .= '<channel>'."\n";
$rss .= '<title>'.$cal_displayname.' - '.$theview.'</title>'."\n";
$rss .= '<link>'.htmlspecialchars ("$default_path").'</link>'."\n";
$rss .= '<description>'.$cal_displayname.' '.$lang['l_calendar'].' - '.$theview.'</description>'."\n";
$rss .= '<language>'.$rss_language.'</language>'."\n";
$rss .= '<copyright>Copyright '.date(Y).', '.htmlspecialchars ("$default_path").'</copyright>'."\n";
//generate the items
$numdays = round((strtotime($todate) - strtotime($fromdate))/(60*60*24)-1);
$thisdate = $fromdate; # start at beginning of date range,
# note that usage of $thisdate is different from distribution
# I use it as a date, dist uses it as a time
$i = 0; #day counter
do {
$thisdate=date('Ymd', strtotime($thisdate));
#echo "Date: $thisdate\n";
$dayofweek = localizeDate ("%a %b %e %Y", strtotime($thisdate));
if (isset($master_array[($thisdate)]) && sizeof($master_array[($thisdate)]) > 0) {
foreach ($master_array[("$thisdate")] as $event_times) {
foreach ($event_times as $val) {
if(!$val["event_start"]){
$event_start = "All Day";
}else{
$event_start = @$val["event_start"];
$event_start = date ($timeFormat, @strtotime ("$event_start"));
}
$event_text = stripslashes(urldecode($val["event_text"]));
$event_text = strip_tags($event_text, '<b><i><u>');
$event_text = str_replace('&','&',$event_text);
$event_text = str_replace('&amp;','&',$event_text);
#uncomment for shorter event text with ...
# $event_text = word_wrap($event_text, 21, $tomorrows_events_lines);
$description = stripslashes(urldecode($val["description"]));
$description = strip_tags($description, '<b><i><u>');
$description = str_replace('&','&',$description);
$description = str_replace('&amp;','&',$description);
$rss_title = htmlspecialchars ("$dayofweek: $event_text");
$rss_link = htmlspecialchars ("$default_path/day.php?getdate=$thisdate&cal=$cal&cpath=$cpath");
if ($description == '') $description = $event_text;
$rss_description = htmlspecialchars ("$dayofweek $event_start: $description");
$rss .= '<item>'."\n";
$rss .= '<title>'.$rss_title.'</title>'."\n";
/*
$rss .= '<event_start>'.$event_start.'</event_start>'."\n";
$rss .= '<seminardate>'.$dayofweek.'</seminardate>'."\n";
$rss .= '<seminarspeaker>'.$event_text.'</seminarspeaker>'."\n";
$rss .= '<seminartitle>'.$description.'</seminartitle>'."\n";
$rss .= '<tagged>'.$val["description"].'</tagged>'."\n";
$rss .= '<seminarhost>'.$val['attendee'].'</seminarhost>'."\n";
$rss .= '<organizer>'.$val['organizer'].'</organizer>'."\n";
$rss .= '<status>'.$val['status'].'</status>'."\n";
$location = str_replace('&','&',$val['location']);
$location = str_replace('&amp;','&',$location);
$rss .= '<location>'.$location.'</location>';
*/
$rss .= '<link>'.$rss_link.'</link>'."\n";
$rss .= '<description>'.$rss_description.'</description>'."\n";
$rss .= '</item>'."\n";
$events_count++;
}
}
}
if (($events_count < 1) && ($i == $numdays)) {
$rss .= '<item>'."\n";
$rss .= '<title>No events found</title>'."\n";
$rss .= '<link>'.htmlspecialchars ("$default_path").'</link>'."\n";
$rss .= '</item>'."\n";
}
$thisdate++;
$i++;
} while ($i <= $numdays);
$rss .= '</channel>'."\n";
$rss .= '</rss>'."\n";
header ("Content-Type: text/xml");
echo "$rss";
?>
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