update Piwik to version 2.16 (fixes #91)

www/analytics/core/Translation/Loader/JsonFileLoader.php

@@ -0,0 +1,64 @@
+<?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\Translation\Loader;
+
+use Piwik\Common;
+
+/**
+ * Loads translations from JSON files.
+ */
+class JsonFileLoader implements LoaderInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function load($language, array $directories)
+    {
+        if (empty($language)) {
+            return array();
+        }
+
+        $translations = array();
+
+        foreach ($directories as $directory) {
+            $filename = $directory . '/' . $language . '.json';
+
+            if (! file_exists($filename)) {
+                continue;
+            }
+
+            $translations = array_replace_recursive(
+                $translations,
+                $this->loadFile($filename)
+            );
+        }
+
+        return $translations;
+    }
+
+    private function loadFile($filename)
+    {
+        $data = file_get_contents($filename);
+        $translations = json_decode($data, true);
+
+        if (is_null($translations) && Common::hasJsonErrorOccurred()) {
+            throw new \Exception(sprintf(
+                'Not able to load translation file %s: %s',
+                $filename,
+                Common::getLastJsonError()
+            ));
+        }
+
+        if (!is_array($translations)) {
+            return array();
+        }
+
+        return $translations;
+    }
+}