[BUGFIX] StreamFactory does not exist in TYPO3 9

Classes/Middleware/ContentReplacerMiddleware.php

@@ -36,6 +36,7 @@ use SGalinski\ContentReplacer\Service\CustomParserService;
 use SGalinski\ContentReplacer\Service\SpanParserService;
 use TYPO3\CMS\Core\Context\Context;
 use TYPO3\CMS\Core\Context\TypoScriptAspect;
+use TYPO3\CMS\Core\Http\Stream;
 use TYPO3\CMS\Core\Http\StreamFactory;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Configuration\BackendConfigurationManager;
@@ -90,8 +91,17 @@ class ContentReplacerMiddleware implements MiddlewareInterface {
 			$content = $this->parseAndReplace($customParser, $content);
 		}
 
-		$streamFactory = GeneralUtility::makeInstance(StreamFactory::class);
-		return $response->withBody($streamFactory->createStream($content));
+		// StreamFactory is not available in TYPO3 9 yet.
+		if (version_compare(\TYPO3\CMS\Core\Utility\VersionNumberUtility::getCurrentTypo3Version(), '10.0.0', '<')) {
+			$stream = new Stream('php://temp', 'r+');
+			if ($content !== '') {
+				$stream->write($content);
+			}
+		} else {
+			$streamFactory = GeneralUtility::makeInstance(StreamFactory::class);
+			$stream = $streamFactory->createStream($content);
+		}
+		return $response->withBody($stream);
 	}