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vendor/yiisoft/yii2/web/HtmlResponseFormatter.php

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+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\web;
+
+use yii\base\Component;
+
+/**
+ * HtmlResponseFormatter formats the given data into an HTML response content.
+ *
+ * It is used by [[Response]] to format response data.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class HtmlResponseFormatter extends Component implements ResponseFormatterInterface
+{
+    /**
+     * @var string the Content-Type header for the response
+     */
+    public $contentType = 'text/html';
+
+
+    /**
+     * Formats the specified response.
+     * @param Response $response the response to be formatted.
+     */
+    public function format($response)
+    {
+        if (stripos($this->contentType, 'charset') === false) {
+            $this->contentType .= '; charset=' . $response->charset;
+        }
+        $response->getHeaders()->set('Content-Type', $this->contentType);
+        if ($response->data !== null) {
+            $response->content = $response->data;
+        }
+    }
+}