primo commit

libraries/vendor/symfony/http-client/Chunk/ServerSentEvent.php

@@ -0,0 +1,107 @@
+<?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\HttpClient\Chunk;
+
+use Symfony\Component\HttpClient\Exception\JsonException;
+use Symfony\Contracts\HttpClient\ChunkInterface;
+
+/**
+ * @author Antoine Bluchet <soyuka@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+final class ServerSentEvent extends DataChunk implements ChunkInterface
+{
+    private string $data = '';
+    private string $id = '';
+    private string $type = 'message';
+    private float $retry = 0;
+    private ?array $jsonData = null;
+
+    public function __construct(string $content)
+    {
+        parent::__construct(-1, $content);
+
+        // remove BOM
+        if (str_starts_with($content, "\xEF\xBB\xBF")) {
+            $content = substr($content, 3);
+        }
+
+        foreach (preg_split("/(?:\r\n|[\r\n])/", $content) as $line) {
+            if (0 === $i = strpos($line, ':')) {
+                continue;
+            }
+
+            $i = false === $i ? \strlen($line) : $i;
+            $field = substr($line, 0, $i);
+            $i += 1 + (' ' === ($line[1 + $i] ?? ''));
+
+            switch ($field) {
+                case 'id': $this->id = substr($line, $i); break;
+                case 'event': $this->type = substr($line, $i); break;
+                case 'data': $this->data .= ('' === $this->data ? '' : "\n").substr($line, $i); break;
+                case 'retry':
+                    $retry = substr($line, $i);
+
+                    if ('' !== $retry && \strlen($retry) === strspn($retry, '0123456789')) {
+                        $this->retry = $retry / 1000.0;
+                    }
+                    break;
+            }
+        }
+    }
+
+    public function getId(): string
+    {
+        return $this->id;
+    }
+
+    public function getType(): string
+    {
+        return $this->type;
+    }
+
+    public function getData(): string
+    {
+        return $this->data;
+    }
+
+    public function getRetry(): float
+    {
+        return $this->retry;
+    }
+
+    /**
+     * Gets the SSE data decoded as an array when it's a JSON payload.
+     */
+    public function getArrayData(): array
+    {
+        if (null !== $this->jsonData) {
+            return $this->jsonData;
+        }
+
+        if ('' === $this->data) {
+            throw new JsonException(sprintf('Server-Sent Event%s data is empty.', '' !== $this->id ? sprintf(' "%s"', $this->id) : ''));
+        }
+
+        try {
+            $jsonData = json_decode($this->data, true, 512, \JSON_BIGINT_AS_STRING | \JSON_THROW_ON_ERROR);
+        } catch (\JsonException $e) {
+            throw new JsonException(sprintf('Decoding Server-Sent Event%s failed: ', '' !== $this->id ? sprintf(' "%s"', $this->id) : '').$e->getMessage(), $e->getCode());
+        }
+
+        if (!\is_array($jsonData)) {
+            throw new JsonException(sprintf('JSON content was expected to decode to an array, "%s" returned in Server-Sent Event%s.', get_debug_type($jsonData), '' !== $this->id ? sprintf(' "%s"', $this->id) : ''));
+        }
+
+        return $this->jsonData = $jsonData;
+    }
+}