add piwik installation

www/analytics/core/CliMulti/Output.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Piwik - Open source web analytics
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+namespace Piwik\CliMulti;
+
+use Piwik\CliMulti;
+use Piwik\Filesystem;
+
+class Output {
+
+    private $tmpFile  = '';
+
+    public function __construct($outputId)
+    {
+        if (!Filesystem::isValidFilename($outputId)) {
+            throw new \Exception('The given output id has an invalid format');
+        }
+
+        $dir = CliMulti::getTmpPath();
+        Filesystem::mkdir($dir, true);
+        $this->tmpFile = $dir . '/' . $outputId . '.output';
+    }
+
+    public function write($content)
+    {
+        file_put_contents($this->tmpFile, $content);
+    }
+
+    public function getPathToFile()
+    {
+        return $this->tmpFile;
+    }
+
+    public function exists()
+    {
+        return file_exists($this->tmpFile);
+    }
+
+    public function get()
+    {
+        return @file_get_contents($this->tmpFile);
+    }
+
+    public function destroy()
+    {
+        Filesystem::deleteFileIfExists($this->tmpFile);
+    }
+
+}