1 files changed, 159 insertions, 0 deletions
diff --git a/lib/files/cache/upgrade.php b/lib/files/cache/upgrade.php
new file mode 100644
index 00000000000..eb8c7297c3e
--- /dev/null
+++ b/lib/files/cache/upgrade.php
@@ -0,0 +1,159 @@
+<?php
+/**
+ * Copyright (c) 2012 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\Cache;
+
+class Upgrade {
+	/**
+	 * @var Legacy $legacy
+	 */
+	private $legacy;
+
+	private $numericIds = array();
+
+	private $mimeTypeIds = array();
+
+	/**
+	 * @param Legacy $legacy
+	 */
+	public function __construct($legacy) {
+		$this->legacy = $legacy;
+	}
+
+	/**
+	 * Preform a shallow upgrade
+	 *
+	 * @param string $path
+	 * @param int $mode
+	 */
+	function upgradePath($path, $mode = Scanner::SCAN_RECURSIVE) {
+		if (!$this->legacy->hasItems()) {
+			return;
+		}
+		\OC_Hook::emit('\OC\Files\Cache\Upgrade', 'migrate_path', $path);
+
+		if ($row = $this->legacy->get($path)) {
+			$data = $this->getNewData($row);
+			$this->insert($data);
+
+			$this->upgradeChilds($data['id'], $mode);
+		}
+	}
+
+	/**
+	 * @param int $id
+	 */
+	function upgradeChilds($id, $mode = Scanner::SCAN_RECURSIVE) {
+		$children = $this->legacy->getChildren($id);
+		foreach ($children as $child) {
+			$childData = $this->getNewData($child);
+			\OC_Hook::emit('\OC\Files\Cache\Upgrade', 'migrate_path', $child['path']);
+			$this->insert($childData);
+			if ($mode == Scanner::SCAN_RECURSIVE) {
+				$this->upgradeChilds($child['id']);
+			}
+		}
+	}
+
+	/**
+	 * @param array $data the data for the new cache
+	 */
+	function insert($data) {
+		if (!$this->inCache($data['storage'], $data['path_hash'])) {
+			$insertQuery = \OC_DB::prepare('INSERT INTO `*PREFIX*filecache`
+					( `fileid`, `storage`, `path`, `path_hash`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted` )
+					VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)');
+
+			$insertQuery->execute(array($data['id'], $data['storage'], $data['path'], $data['path_hash'], $data['parent'], $data['name'],
+				$data['mimetype'], $data['mimepart'], $data['size'], $data['mtime'], $data['encrypted']));
+		}
+	}
+
+	/**
+	 * @param string $storage
+	 * @param string $pathHash
+	 * @return bool
+	 */
+	function inCache($storage, $pathHash) {
+		$query = \OC_DB::prepare('SELECT `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?');
+		$result = $query->execute(array($storage, $pathHash));
+		return (bool)$result->fetchRow();
+	}
+
+	/**
+	 * get the new data array from the old one
+	 *
+	 * @param array $data the data from the old cache
+	 * @return array
+	 */
+	function getNewData($data) {
+		$newData = $data;
+		list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($data['path']);
+		/**
+		 * @var \OC\Files\Storage\Storage $storage
+		 * @var string $internalPath;
+		 */
+		$newData['path_hash'] = md5($internalPath);
+		$newData['path'] = $internalPath;
+		$newData['storage'] = $this->getNumericId($storage);
+		$newData['parent'] = ($internalPath === '') ? -1 : $data['parent'];
+		$newData['permissions'] = ($data['writable']) ? \OCP\PERMISSION_ALL : \OCP\PERMISSION_READ;
+		$newData['storage_object'] = $storage;
+		$newData['mimetype'] = $this->getMimetypeId($newData['mimetype'], $storage);
+		$newData['mimepart'] = $this->getMimetypeId($newData['mimepart'], $storage);
+		return $newData;
+	}
+
+	/**
+	 * get the numeric storage id
+	 *
+	 * @param \OC\Files\Storage\Storage $storage
+	 * @return int
+	 */
+	function getNumericId($storage) {
+		$storageId = $storage->getId();
+		if (!isset($this->numericIds[$storageId])) {
+			$cache = $storage->getCache();
+			$this->numericIds[$storageId] = $cache->getNumericStorageId();
+		}
+		return $this->numericIds[$storageId];
+	}
+
+	/**
+	 * @param string $mimetype
+	 * @param \OC\Files\Storage\Storage $storage
+	 * @return int
+	 */
+	function getMimetypeId($mimetype, $storage) {
+		if (!isset($this->mimeTypeIds[$mimetype])) {
+			$cache = new Cache($storage);
+			$this->mimeTypeIds[$mimetype] = $cache->getMimetypeId($mimetype);
+		}
+		return $this->mimeTypeIds[$mimetype];
+	}
+
+	/**
+	 * check if a cache upgrade is required for $user
+	 *
+	 * @param string $user
+	 * @return bool
+	 */
+	static function needUpgrade($user) {
+		$cacheVersion = (int)\OCP\Config::getUserValue($user, 'files', 'cache_version', 4);
+		return $cacheVersion < 5;
+	}
+
+	/**
+	 * mark the filecache as upgrade
+	 *
+	 * @param string $user
+	 */
+	static function upgradeDone($user) {
+		\OCP\Config::setUserValue($user, 'files', 'cache_version', 5);
+	}
+}