Initial Drupal 11 with DDEV setup

vendor/symfony/http-foundation/ServerEvent.php

@@ -0,0 +1,147 @@
+<?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\HttpFoundation;
+
+/**
+ * An event generated on the server intended for streaming to the client
+ * as part of the SSE streaming technique.
+ *
+ * @implements \IteratorAggregate<string>
+ *
+ * @author Yonel Ceruto <open@yceruto.dev>
+ */
+class ServerEvent implements \IteratorAggregate
+{
+    /**
+     * @param string|iterable<string> $data    The event data field for the message
+     * @param string|null             $type    The event type
+     * @param int|null                $retry   The number of milliseconds the client should wait
+     *                                         before reconnecting in case of network failure
+     * @param string|null             $id      The event ID to set the EventSource object's last event ID value
+     * @param string|null             $comment The event comment
+     */
+    public function __construct(
+        private string|iterable $data,
+        private ?string $type = null,
+        private ?int $retry = null,
+        private ?string $id = null,
+        private ?string $comment = null,
+    ) {
+    }
+
+    public function getData(): iterable|string
+    {
+        return $this->data;
+    }
+
+    /**
+     * @return $this
+     */
+    public function setData(iterable|string $data): static
+    {
+        $this->data = $data;
+
+        return $this;
+    }
+
+    public function getType(): ?string
+    {
+        return $this->type;
+    }
+
+    /**
+     * @return $this
+     */
+    public function setType(string $type): static
+    {
+        $this->type = $type;
+
+        return $this;
+    }
+
+    public function getRetry(): ?int
+    {
+        return $this->retry;
+    }
+
+    /**
+     * @return $this
+     */
+    public function setRetry(?int $retry): static
+    {
+        $this->retry = $retry;
+
+        return $this;
+    }
+
+    public function getId(): ?string
+    {
+        return $this->id;
+    }
+
+    /**
+     * @return $this
+     */
+    public function setId(string $id): static
+    {
+        $this->id = $id;
+
+        return $this;
+    }
+
+    public function getComment(): ?string
+    {
+        return $this->comment;
+    }
+
+    public function setComment(string $comment): static
+    {
+        $this->comment = $comment;
+
+        return $this;
+    }
+
+    /**
+     * @return \Traversable<string>
+     */
+    public function getIterator(): \Traversable
+    {
+        static $lastRetry = null;
+
+        $head = '';
+        if ($this->comment) {
+            $head .= \sprintf(': %s', $this->comment)."\n";
+        }
+        if ($this->id) {
+            $head .= \sprintf('id: %s', $this->id)."\n";
+        }
+        if ($this->retry > 0 && $this->retry !== $lastRetry) {
+            $head .= \sprintf('retry: %s', $lastRetry = $this->retry)."\n";
+        }
+        if ($this->type) {
+            $head .= \sprintf('event: %s', $this->type)."\n";
+        }
+        yield $head;
+
+        if ($this->data) {
+            if (is_iterable($this->data)) {
+                foreach ($this->data as $data) {
+                    yield \sprintf('data: %s', $data)."\n";
+                }
+            } else {
+                yield \sprintf('data: %s', $this->data)."\n";
+            }
+        }
+
+        yield "\n";
+    }
+}