update Piwik to version 2.16 (fixes #91)

www/analytics/plugins/Diagnostics/Diagnostic/FileIntegrityCheck.php

@@ -0,0 +1,56 @@
+<?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\Diagnostics\Diagnostic;
+
+use Piwik\Filechecks;
+use Piwik\Translation\Translator;
+
+/**
+ * Check the files integrity.
+ */
+class FileIntegrityCheck implements Diagnostic
+{
+    /**
+     * @var Translator
+     */
+    private $translator;
+
+    public function __construct(Translator $translator)
+    {
+        $this->translator = $translator;
+    }
+
+    public function execute()
+    {
+        $label = $this->translator->translate('Installation_SystemCheckFileIntegrity');
+
+        $messages = Filechecks::getFileIntegrityInformation();
+        $ok = array_shift($messages);
+
+        if (empty($messages)) {
+            return array(DiagnosticResult::singleResult($label, DiagnosticResult::STATUS_OK));
+        }
+
+        if ($ok) {
+            $status = DiagnosticResult::STATUS_WARNING;
+            return array(DiagnosticResult::singleResult($label, $status, $messages[0]));
+        }
+
+        $comment = $this->translator->translate('General_FileIntegrityWarningExplanation');
+
+        // Keep only the 20 first lines else it becomes unmanageable
+        if (count($messages) > 20) {
+            $messages = array_slice($messages, 0, 20);
+            $messages[] = '...';
+        }
+        $comment .= '<br/><br/><pre style="overflow-x: scroll;max-width: 600px;">'
+            . implode("\n", $messages) . '</pre>';
+
+        return array(DiagnosticResult::singleResult($label, DiagnosticResult::STATUS_WARNING, $comment));
+    }
+}