/**
* Gets cache info.
*
* @param string $file
* @return array|null
*/
protected function getCache($file)
{
if (!$this->options['cache']) {
return null;
}
if (!$this->cache) {
$modified = 0;
$resources = $this->controllers->getResources();
foreach ($this->aliases as $name => $alias) {
$resources['aliases'][] = $name . $alias[0];
}
foreach ($resources['controllers'] as $controller) {
if (file_exists($controller) && ($time = filemtime($controller)) > $modified) {
$modified = $time;
}
}
$this->cache = ['key' => sha1(json_encode($resources)), 'modified' => $modified];
}
$file = sprintf($file, $this->options['cache'], $this->cache['key']);
$time = file_exists($file) ? filemtime($file) : 0;
$fresh = $time >= $this->cache['modified'];
return array_merge(compact('fresh', 'file'), $this->cache);
}
