manual backporting of OC\Files\Utils\Scanner to stable5

diff --git a/lib/files/utils/scanner.php b/lib/files/utils/scanner.php
new file mode 100644 (file)
index 0000000..a98d461
--- /dev/null
+++ b/lib/files/utils/scanner.php
@@ -0,0 +1,90 @@
+<?php
+/**
+ * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Utils;
+
+use OC\Files\Filesystem;
+use OC\Files\Mount;
+use OC\Hooks\PublicEmitter;
+
+/**
+ * Class Scanner
+ *
+ * Hooks available in scope \OC\Utils\Scanner
+ *  - scanFile(string $absolutePath)
+ *  - scanFolder(string $absolutePath)
+ *
+ * @package OC\Files\Utils
+ */
+class Scanner extends PublicEmitter {
+       /**
+        * @var string $user
+        */
+       private $user;
+
+       /**
+        * @param string $user
+        */
+       public function __construct($user) {
+               $this->user = $user;
+       }
+
+       /**
+        * get all storages for $dir
+        *
+        * @param string $dir
+        * @return \OC\Files\Mount[]
+        */
+       protected function getMounts($dir) {
+               //TODO: move to the node based fileapi once that's done
+               \OC_Util::tearDownFS();
+               \OC_Util::setupFS($this->user);
+               $absolutePath = Filesystem::getView()->getAbsolutePath($dir);
+
+               $mounts = Mount::findIn($absolutePath);
+               $mounts[] = Mount::find($absolutePath);
+               $mounts = array_reverse($mounts); //start with the mount of $dir
+
+               return $mounts;
+       }
+
+       /**
+        * attach listeners to the scanner
+        *
+        * @param \OC\Files\Mount $mount
+        */
+       protected function attachListener($mount) {
+               $scanner = $mount->getStorage()->getScanner();
+               $emitter = $this;
+               $scanner->listen('\OC\Files\Cache\Scanner', 'scanFile', function ($path) use ($mount, $emitter) {
+                       $emitter->emit('\OC\Files\Utils\Scanner', 'scanFile', array($mount->getMountPoint() . $path));
+               });
+               $scanner->listen('\OC\Files\Cache\Scanner', 'scanFolder', function ($path) use ($mount, $emitter) {
+                       $emitter->emit('\OC\Files\Utils\Scanner', 'scanFolder', array($mount->getMountPoint() . $path));
+               });
+       }
+
+       public function backgroundScan($dir) {
+               $mounts = $this->getMounts($dir);
+               foreach ($mounts as $mount) {
+                       $scanner = $mount->getStorage()->getScanner();
+                       $this->attachListener($mount);
+                       $scanner->backgroundScan();
+               }
+       }
+
+       public function scan($dir) {
+               $mounts = $this->getMounts($dir);
+               foreach ($mounts as $mount) {
+                       $scanner = $mount->getStorage()->getScanner();
+                       $this->attachListener($mount);
+                       $scanner->scan('', \OC\Files\Cache\Scanner::SCAN_RECURSIVE, \OC\Files\Cache\Scanner::REUSE_ETAG);
+               }
+       }
+}
+