4268: Updated fixture loader to allow loading from local files

Author: rimi-itk

README.md

@@ -57,6 +57,9 @@ ElasticSearch.
 > [!TIP]
 > Use `task fixtures:load` to load all fixtures into Elasticsearch.
 
+<!-- Ignore MD028/no-blanks-blockquote Blank line inside blockquote (cf.
+https://github.com/DavidAnson/markdownlint/issues/263) -->
+
 > [!CAUTION]
 > If the `task fixtures:load` command (or any `bin/console app:fixtures:load` incantation) fails with an error like
 >

src/Fixtures/FixtureLoader.php

@@ -62,6 +62,20 @@ public function process(string $indexName, string $url): void
      */
     private function download(string $url): array
     {
+        // Load from local file if using "file" URL scheme.
+        if (preg_match('~^file://(?<path>/.+)$~', $url, $matches)) {
+            $path = $matches['path'];
+            if (!is_readable($path)) {
+                throw new \HttpException('Unable to download fixture data');
+            }
+            $data = json_decode(file_get_contents($path), true);
+            if (empty($data)) {
+                throw new \HttpException('Unable to download fixture data');
+            }
+
+            return $data;
+        }
+
         $response = $this->httpClient->request('GET', $url);
 
         if (Response::HTTP_OK !== $response->getStatusCode()) {