public static function init() {
self::reset_query();
if (!self::$routeCache) {
ShuttleSchedule::init();
// this is part of a hack to correct
// saferide route names that nextbus gets wrong
$combined_routes = Array(
'saferidebostone' => 'saferidebostonall',
'saferidebostonw' => 'saferidebostonall',
'saferidecambeast' => 'saferidecamball',
'saferidecambwest' => 'saferidecamball',
);
// query nextbus to see what routes are available
self::set_command('routeList');
$xml = self::query();
if ($xml) {
self::$unmodifiedRouteList = Array();
foreach ($xml->getElementsByTagName('route') as $route) {
$routeName = $route->getAttribute('tag');
self::$unmodifiedRouteList[] = $routeName;
// if nextbus' route list is not consistent with the published schedule
// use the published route list
if (!ShuttleSchedule::is_running_today($routeName)
&& array_key_exists($routeName, $combined_routes)
&& ShuttleSchedule::is_running_today($combined_routes[$routeName])) {
$routeName = $combined_routes[$routeName];
}
if (!self::$routeCache[$routeName] = self::read_route_cache($routeName)) {
self::$routeCache[$routeName] = Array();
}
}
} else {
// query failed; get {routeName}s from cached filenames
foreach (scandir(CACHE_DIR) as $filename) {
if (strpos($filename, self::$routeCachePrefix) == 0) {
$routeName = substr($filename, 0, strlen(self::$routeCachePrefix));
self::$routeCache[$routeName] = self::read_route_cache($routeName);
}
}
}
}
}
