Refs #4701 Add CSV renderer

core/ReportRenderer/Csv.php

+<?php
+namespace Piwik\ReportRenderer;
+
+use Piwik\ReportRenderer;
+use Piwik\DataTable\Renderer\Csv as CsvDataTableRenderer;
+use Piwik\DataTable\DataTableInterface;
+
+class Csv extends ReportRenderer
+{
+    /**
+     * @var string
+     */
+    protected $rendered;
+
+    /**
+     * Initialize locale settings.
+     * If not called, locale settings defaults to 'en'
+     *
+     * @param string $locale
+     */
+    public function setLocale($locale)
+    {
+        return;
+    }
+
+    /**
+     * Save rendering to disk
+     *
+     * @param string $filename without path & without format extension
+     * @return string path of file
+     */
+    public function sendToDisk($filename)
+    {
+        return ReportRenderer::writeFile(
+            $filename,
+            ReportRenderer::CSV_FORMAT,
+            $this->rendered
+        );
+    }
+
+    /**
+     * Send rendering to browser with a 'download file' prompt
+     *
+     * @param string $filename without path & without format extension
+     */
+    public function sendToBrowserDownload($filename)
+    {
+        ReportRenderer::sendToBrowser(
+            $filename,
+            ReportRenderer::CSV_FORMAT,
+            "text/" . ReportRenderer::CSV_FORMAT,
+            $this->rendered
+        );
+    }
+
+    /**
+     * Output rendering to browser
+     *
+     * @param string $filename without path & without format extension
+     */
+    public function sendToBrowserInline($filename)
+    {
+        ReportRenderer::sendToBrowser(
+            $filename,
+            ReportRenderer::CSV_FORMAT,
+            "application/" . ReportRenderer::CSV_FORMAT,
+            $this->rendered
+        );
+    }
+
+    /**
+     * Get rendered report
+     */
+    public function getRenderedReport()
+    {
+        return $this->rendered;
+    }
+
+    /**
+     * Generate the first page.
+     *
+     * @param string $reportTitle
+     * @param string $prettyDate formatted date
+     * @param string $description
+     * @param array $reportMetadata metadata for all reports
+     * @param array $segment segment applied to all reports
+     */
+    public function renderFrontPage($reportTitle, $prettyDate, $description, $reportMetadata, $segment)
+    {
+        return;
+    }
+
+    /**
+     * Render the provided report.
+     * Multiple calls to this method before calling outputRendering appends each report content.
+     *
+     * @param array $processedReport @see API::getProcessedReport()
+     */
+    public function renderReport($processedReport)
+    {
+
+        $csvRenderer = $this->getRenderer(
+            $processedReport['reportData'],
+            $processedReport['metadata']['uniqueId']
+        );
+
+        $this->rendered .= implode(
+            '',
+            array(
+                $processedReport['metadata']['name'],
+                $csvRenderer->lineEnd,
+                $csvRenderer->render($processedReport),
+                $csvRenderer->lineEnd,
+                $csvRenderer->lineEnd,
+            )
+        );
+    }
+
+    /**
+     * @param DataTableInterface $table
+     * @param string $uniqueId
+     * @return \Piwik\DataTable\Renderer\Csv
+     */
+    protected function getRenderer(DataTableInterface $table, $uniqueId)
+    {
+        $csvRenderer = new CsvDataTableRenderer();
+        $csvRenderer->setTable($table);
+        $csvRenderer->setConvertToUnicode(false);
+        $csvRenderer->setApiMethod(
+            $this->getApiMethodNameFromUniqueId($uniqueId)
+        );
+
+        return $csvRenderer;
+    }
+
+    /**
+     * @param $uniqueId
+     * @return string
+     */
+    protected function getApiMethodNameFromUniqueId($uniqueId)
+    {
+        return str_replace("_", ".", $uniqueId);
+    }
+}