update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/CoreUpdater/Model.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ *
+ */
+namespace Piwik\Plugins\CoreUpdater;
+
+use Piwik\Filesystem;
+
+class Model
+{
+    public function getPluginsFromDirectoy($directoryToLook)
+    {
+        $directories = _glob($directoryToLook . '/plugins/' . '*', GLOB_ONLYDIR);
+
+        $directories = array_map(function ($directory) use ($directoryToLook) {
+            return str_replace($directoryToLook, '', $directory);
+        }, $directories);
+
+        return $directories;
+    }
+
+    public function removeGoneFiles($source, $target)
+    {
+        Filesystem::unlinkTargetFilesNotPresentInSource($source . '/core', $target . '/core');
+
+        foreach ($this->getPluginsFromDirectoy($source) as $pluginDir) {
+            Filesystem::unlinkTargetFilesNotPresentInSource($source . $pluginDir, $target . $pluginDir);
+        }
+    }
+}