update Piwik to version 2.16 (fixes #91)

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

@@ -0,0 +1,72 @@
+<?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;
+
+/**
+ * Loads a pseudo-language for developers where translation are equal to translation ids.
+ */
+class DevelopmentLoader implements LoaderInterface
+{
+    const LANGUAGE_ID = 'dev';
+
+    /**
+     * Decorated loader.
+     *
+     * @var LoaderInterface
+     */
+    private $loader;
+
+    /**
+     * @var string
+     */
+    private $fallbackLanguage = 'en';
+
+    /**
+     * @param LoaderInterface $loader Decorate another loader to add the pseudo-language.
+     */
+    public function __construct(LoaderInterface $loader)
+    {
+        $this->loader = $loader;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function load($language, array $directories)
+    {
+        if ($language !== self::LANGUAGE_ID) {
+            return $this->loader->load($language, $directories);
+        }
+
+        return $this->getDevelopmentTranslations($directories);
+    }
+
+    private function getDevelopmentTranslations(array $directories)
+    {
+        $fallbackTranslations = $this->loader->load($this->fallbackLanguage, $directories);
+
+        $translations = array();
+
+        foreach ($fallbackTranslations as $section => $sectionFallbackTranslations) {
+            $translationIds = array_keys($sectionFallbackTranslations);
+            $sectionTranslations = $this->prefixTranslationsWithSection($section, $translationIds);
+
+            $translations[$section] = array_combine($translationIds, $sectionTranslations);
+        }
+
+        return $translations;
+    }
+
+    private function prefixTranslationsWithSection($section, $translationIds)
+    {
+        return array_map(function ($translation) use ($section) {
+            return $section . '_' . $translation;
+        }, $translationIds);
+    }
+}