From 6ca549791c83965954cb9fee4cf7fbbc2e6a0100 Mon Sep 17 00:00:00 2001
From: Sebastian Schreiber <me@schreibersebastian.de>
Date: Fri, 16 Dec 2022 09:09:16 +0100
Subject: [PATCH] Add fallback if image cannot be found (#173)

* TASK: Enable hot dev server

* TASK: Add fallback if image cannot be found
---
 Classes/Integration/Filesystem.php    |  2 +-
 Classes/ViewHelpers/SvgViewHelper.php | 33 ++++++++++++++++++---------
 2 files changed, 23 insertions(+), 12 deletions(-)

diff --git a/Classes/Integration/Filesystem.php b/Classes/Integration/Filesystem.php
index a89880c..3eaacd6 100644
--- a/Classes/Integration/Filesystem.php
+++ b/Classes/Integration/Filesystem.php
@@ -20,7 +20,7 @@ final class Filesystem implements FilesystemInterface
 {
     public function get(string $pathToFile): string
     {
-        $data = @file_get_contents($pathToFile);
+        $data = GeneralUtility::getUrl($pathToFile);
 
         if (false === $data) {
             throw new UnexpectedValueException(sprintf('Data could not be read from file %s', $pathToFile));
diff --git a/Classes/ViewHelpers/SvgViewHelper.php b/Classes/ViewHelpers/SvgViewHelper.php
index 575b7aa..37a322b 100644
--- a/Classes/ViewHelpers/SvgViewHelper.php
+++ b/Classes/ViewHelpers/SvgViewHelper.php
@@ -15,7 +15,9 @@
 use DOMElement;
 use DOMNodeList;
 use DOMXPath;
+use Ssch\Typo3Encore\Integration\FilesystemInterface;
 use Ssch\Typo3Encore\Integration\IdGeneratorInterface;
+use TYPO3\CMS\Core\Resource\Exception\FolderDoesNotExistException;
 use TYPO3\CMS\Extbase\Service\ImageService;
 use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractTagBasedViewHelper;
 use UnexpectedValueException;
@@ -30,18 +32,21 @@ class SvgViewHelper extends AbstractTagBasedViewHelper
      */
     protected $tagName = 'svg';
 
-    private ImageService $imageService;
-
     private IdGeneratorInterface $idGenerator;
 
-    public function injectImageService(ImageService $imageService): void
-    {
-        $this->imageService = $imageService;
-    }
+    private FilesystemInterface $filesystem;
 
-    public function injectIdGenerator(IdGeneratorInterface $idGenerator): void
-    {
+    private ImageService $imageService;
+
+    public function __construct(
+        FilesystemInterface $filesystem,
+        IdGeneratorInterface $idGenerator,
+        ImageService $imageService
+    ) {
+        parent::__construct();
+        $this->filesystem = $filesystem;
         $this->idGenerator = $idGenerator;
+        $this->imageService = $imageService;
     }
 
     public function initializeArguments(): void
@@ -72,8 +77,14 @@ public function initializeArguments(): void
 
     public function render(): string
     {
-        $image = $this->imageService->getImage($this->arguments['src'], null, false);
-        $imageUri = $this->imageService->getImageUri($image, (bool) $this->arguments['absolute']);
+        try {
+            $image = $this->imageService->getImage($this->arguments['src'], null, false);
+            $imageUri = $this->imageService->getImageUri($image, (bool) $this->arguments['absolute']);
+            $imageContents = $image->getContents();
+        } catch (FolderDoesNotExistException $folderDoesNotExistException) {
+            $imageUri = $this->arguments['src'];
+            $imageContents = $this->filesystem->get($imageUri);
+        }
 
         $content = [];
         $uniqueId = 'unique';
@@ -110,7 +121,7 @@ public function render(): string
         $name = (string) $this->arguments['name'];
         if ($this->arguments['inline']) {
             $doc = new DOMDocument();
-            $doc->loadXML($image->getContents());
+            $doc->loadXML($imageContents);
             $xpath = new DOMXPath($doc);
             $iconNodeList = $xpath->query("//*[@id='{$name}']");