Fix various compatibility issues with PHP 8

libs/swiftmailer/classes/Swift/Image.php

@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2004-2009 Chris Corbyn
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * An image, embedded in a multipart message.
+ *
+ * @author Chris Corbyn
+ */
+class Swift_Image extends Swift_EmbeddedFile
+{
+    /**
+     * Create a new EmbeddedFile.
+     *
+     * Details may be optionally provided to the constructor.
+     *
+     * @param string|Swift_OutputByteStream $data
+     * @param string                        $filename
+     * @param string                        $contentType
+     */
+    public function __construct($data = null, $filename = null, $contentType = null)
+    {
+        parent::__construct($data, $filename, $contentType);
+    }
+
+    /**
+     * Create a new Image.
+     *
+     * @param string|Swift_OutputByteStream $data
+     * @param string                        $filename
+     * @param string                        $contentType
+     *
+     * @return self
+     */
+    public static function newInstance($data = null, $filename = null, $contentType = null)
+    {
+        return new self($data, $filename, $contentType);
+    }
+
+    /**
+     * Create a new Image from a filesystem path.
+     *
+     * @param string $path
+     *
+     * @return self
+     */
+    public static function fromPath($path)
+    {
+        return self::newInstance()->setFile(new Swift_ByteStream_FileByteStream($path));
+    }
+}