New ResourceWatcher component demonstration

symfony_resource_watcher.php

<?php

use Symfony\Component\ResourceWatcher\ResourceWatcher,
    Symfony\Component\ResourceWatcher\Event\Event,
    Symfony\Component\Config\Resource\DirectoryResource,
    Symfony\Component\Config\Resource\FileResource;

$watcher = new ResourceWatcher();

$watcher->track(new DirectoryResource('/some/directory'), function($event) {
    if ($event->getResource() instanceof FileResource) {
        echo "File [?] " . (string) $event->getResource() . "\n";
    } else {
        echo "Dir [?] " . (string) $event->getResource() . "\n";
    }
});
$watcher->track(new FileResource('/some/file.txt'), function($event) use ($watcher) {
    if (false !== strpos((string) $event->getResource(), 'stop_me.txt')) {
        $watcher->stop();
    }

    if (Event::CREATED === $event->getType()) {
        echo "File created: " . $event->getType() . " " . (string) $event->getResource() . "\n";
    } elseif (Event::MODIFIED === $event->getType()) {
        echo "File updated: " . $event->getType() . " " . (string) $event->getResource() . "\n";
    } elseif (Event::DELETED === $event->getType()) {
        echo "File deleted: " . $event->getType() . " " . (string) $event->getResource() . "\n";
    }
});

$watcher->start();