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vendor/php-flasher/flasher/Http/ResponseExtension.php

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+<?php
+
+/*
+ * This file is part of the PHPFlasher package.
+ * (c) Younes KHOUBZA <younes.khoubza@gmail.com>
+ */
+
+namespace Flasher\Prime\Http;
+
+use Flasher\Prime\FlasherInterface;
+use Flasher\Prime\Response\Presenter\HtmlPresenter;
+
+final class ResponseExtension
+{
+    /**
+     * @var FlasherInterface
+     */
+    private $flasher;
+
+    public function __construct(FlasherInterface $flasher)
+    {
+        $this->flasher = $flasher;
+    }
+
+    /**
+     * @return ResponseInterface
+     */
+    public function render(RequestInterface $request, ResponseInterface $response)
+    {
+        if (!$this->isRenderable($request, $response)) {
+            return $response;
+        }
+
+        $content = $response->getContent() ?: '';
+        if (!\is_string($content)) {
+            return $response;
+        }
+
+        $placeHolders = array(
+            HtmlPresenter::FLASHER_FLASH_BAG_PLACE_HOLDER,
+            HtmlPresenter::HEAD_END_PLACE_HOLDER,
+            HtmlPresenter::BODY_END_PLACE_HOLDER,
+        );
+
+        foreach ($placeHolders as $insertPlaceHolder) {
+            $insertPosition = strripos($content, $insertPlaceHolder);
+            if (false !== $insertPosition) {
+                break;
+            }
+        }
+
+        if (false === $insertPosition) {
+            return $response;
+        }
+
+        $alreadyRendered = HtmlPresenter::FLASHER_FLASH_BAG_PLACE_HOLDER === $insertPlaceHolder;
+        $htmlResponse = $this->flasher->render(array(), 'html', array('envelopes_only' => $alreadyRendered));
+
+        if (empty($htmlResponse)) {
+            return $response;
+        }
+
+        $htmlResponse = "\n".str_replace("\n", '', $htmlResponse)."\n";
+        $offset = $alreadyRendered ? strlen(HtmlPresenter::FLASHER_FLASH_BAG_PLACE_HOLDER) : 0;
+
+        $content = substr($content, 0, $insertPosition).$htmlResponse.substr($content, $insertPosition + $offset);
+        $response->setContent($content);
+
+        return $response;
+    }
+
+    /**
+     * @return bool
+     */
+    private function isRenderable(RequestInterface $request, ResponseInterface $response)
+    {
+        return !$request->isXmlHttpRequest()
+            && $request->isHtmlRequestFormat()
+            && !$response->isRedirection()
+            && $response->isHtml()
+            && !$response->isAttachment()
+            && !$response->isJson();
+    }
+}