+ $links = '';
+ if (isset($_SERVER['HTTP_HOST'])) {
+ $links = ' <link rel="alternate" type="text/calendar" href="'
+ . $_SERVER['REQUEST_SCHEME'] . '://'
+ . $_SERVER['HTTP_HOST']
+ . preg_replace('#\?.+$#', '', $_SERVER['REQUEST_URI'])
+ . '?renderer=ical'
+ . '"/>'
+ . "\n";
+ $links .= ' <link rel="alternate" type="text/plain" href="'
+ . $_SERVER['REQUEST_SCHEME'] . '://'
+ . $_SERVER['HTTP_HOST']
+ . preg_replace('#\?.+$#', '', $_SERVER['REQUEST_URI'])
+ . '?renderer=console'
+ . '"/>'
+ . "\n";
+ }
+