Add new optional beta email parser thats based on ImapEngine instead of Webklex

plugins/vendor/zbateson/mail-mime-parser/src/Header/GenericHeader.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * This file is part of the ZBateson\MailMimeParser project.
+ *
+ * @license http://opensource.org/licenses/bsd-license.php BSD
+ */
+
+namespace ZBateson\MailMimeParser\Header;
+
+use Psr\Log\LoggerInterface;
+use ZBateson\MailMimeParser\Header\Consumer\GenericConsumerMimeLiteralPartService;
+use ZBateson\MailMimeParser\MailMimeParser;
+
+/**
+ * Reads a generic header.
+ *
+ * Header's may contain mime-encoded parts, quoted parts, and comments.  The
+ * string value is the combined value of all its parts.
+ *
+ * @author Zaahid Bateson
+ */
+class GenericHeader extends AbstractHeader
+{
+    public function __construct(
+        string $name,
+        string $value,
+        ?LoggerInterface $logger = null,
+        ?GenericConsumerMimeLiteralPartService $consumerService = null
+    ) {
+        $di = MailMimeParser::getGlobalContainer();
+        parent::__construct(
+            $logger ?? $di->get(LoggerInterface::class),
+            $consumerService ?? $di->get(DateConsumerService::class),
+            $name,
+            $value
+        );
+        parent::__construct($logger, $consumerService, $name, $value);
+    }
+
+    public function getValue() : ?string
+    {
+        if (!empty($this->parts)) {
+            return \implode('', \array_map(function($p) { return $p->getValue(); }, $this->parts));
+        }
+        return null;
+    }
+}