新增

server/vendor/symfony/mime/DependencyInjection/AddMimeTypeGuesserPass.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mime\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Registers custom mime types guessers.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class AddMimeTypeGuesserPass implements CompilerPassInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function process(ContainerBuilder $container)
+    {
+        if ($container->has('mime_types')) {
+            $definition = $container->findDefinition('mime_types');
+            foreach ($container->findTaggedServiceIds('mime.mime_type_guesser', true) as $id => $attributes) {
+                $definition->addMethodCall('registerGuesser', [new Reference($id)]);
+            }
+        }
+    }
+}