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<?php
	/**
	 * generates an ical feed on init if url is correct
	 */
	function em_ical( ){
		//check if this is a calendar request for all events
		if ( preg_match('/events.ics(\?.+)?$/', $_SERVER['REQUEST_URI']) || $_SERVER['REQUEST_URI'] == '/?ical=1' ) {
			header('Content-Type: text/calendar; charset=utf-8');
			header('Content-Disposition: inline; filename="events.ics"');
			//send headers
			em_locate_template('templates/ical.php', true);
			die();
		}
	}
	add_action ( 'init', 'em_ical' );
	
	/**
	 * Generates an ics file for a single event 
	 */
	function em_ical_item(){
		global $wpdb, $wp_query;
		//check if we're outputting an ical feed
		if( !empty($wp_query) && $wp_query->get('ical') ){
			$filename = 'events';
			$args = array();
			//single event
			if( $wp_query->get(EM_POST_TYPE_EVENT) ){
				$event_id = $wpdb->get_var('SELECT event_id FROM '.EM_EVENTS_TABLE." WHERE event_slug='".$wp_query->get(EM_POST_TYPE_EVENT)."' AND event_status=1 LIMIT 1");
				if( !empty($event_id) ){
					$filename = $wp_query->get(EM_POST_TYPE_EVENT);
					$args['event'] = $event_id;
				}
			//single location
			}elseif( $wp_query->get(EM_POST_TYPE_LOCATION) ){
				$location_id = $wpdb->get_var('SELECT location_id FROM '.EM_LOCATIONS_TABLE." WHERE location_slug='".$wp_query->get(EM_POST_TYPE_LOCATION)."' AND location_status=1 LIMIT 1");
				if( !empty($location_id) ){
					$filename = $wp_query->get(EM_POST_TYPE_LOCATION);
					$args['location'] = $location_id;
				}
			//taxonomies
			}else{
				$taxonomies = EM_Object::get_taxonomies();
				foreach($taxonomies as $tax_arg => $taxonomy_info){
					$taxonomy_term = $wp_query->get($taxonomy_info['query_var']); 
					if( $taxonomy_term ){
						$filename = $taxonomy_term;
						$args[$tax_arg] = $taxonomy_term;
					}
				}
			}
			//only output the ical if we have a match from above
			if( count($args) > 0 ){
				//send headers and output ical
				header('Content-type: text/calendar; charset=utf-8');
				header('Content-Disposition: inline; filename="'.$filename.'.ics"');
				em_locate_template('templates/ical.php', true, array('args'=>$args));
				exit();
			}else{
				//no item exists, so redirect to original URL
				$url_to_redirect = preg_replace("/ical\/$/",'', esc_url_raw(add_query_arg(array('ical'=>null))));				
				wp_safe_redirect($url_to_redirect, '302');
				exit();
			}
		}
	}
	add_action ( 'parse_query', 'em_ical_item' );

/**
	 * A utf-8 safe wordwrap function, avoiding CRLF issues with Chinese and other multi-byte characters.
	 * @param string $string
	 * @return string
	 */
	function em_mb_ical_wordwrap($string){
		if( !defined('EM_MB_ICAL_WORDWRAP') || EM_MB_ICAL_WORDWRAP ){
			$return = '';
			for ( $i = 0; strlen($string) > 0; $i++ ) {
				$linewidth = ($i == 0? 75 : 74);
				$linesize = (strlen($string) > $linewidth? $linewidth: strlen($string));
				if($i > 0) $return .= "\r\n ";
				$return .= mb_strcut($string,0,$linesize);
				$string = mb_strcut($string,$linewidth);
			}
			return $return;
		}
		return wordwrap($string, 75, "\r\n ", true);
	}
?>

[+] templates
[+] classes
[-] em-ical.php [open]
[+] includes
[-] em-posts.php [open]
[-] em-bbpress.php [open]
[-] em-install.php [open]
[-] screenshot-5.png [open]
[+] multilingual
[+] ..
[-] em-template-tags.php [open]
[-] screenshot-6.png [open]
[-] em-actions.php [open]
[-] em-pro-compatibility.php [open]
[-] em-shortcode.php [open]
[-] em-upgrade.php [open]
[-] em-functions.php [open]
[-] em-events.php [open]
[-] em-debug.php [open]
[+] admin
[-] em-emails.php [open]
[+] widgets
[-] screenshot-2.png [open]
[-] em-data-privacy.php [open]
[+] buddypress
[-] screenshot-4.png [open]
[-] readme.txt [open]
[-] events-manager.php [open]
[-] screenshot-1.png [open]
[-] em-wpfc.php [open]
[-] screenshot-3.png [open]