<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Mime\Part\Multipart;
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use Symfony\Component\Mime\Part\AbstractMultipartPart;
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use Symfony\Component\Mime\Part\AbstractPart;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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final class RelatedPart extends AbstractMultipartPart
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{
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private $mainPart;
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public function __construct(AbstractPart $mainPart, AbstractPart $part, AbstractPart ...$parts)
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{
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$this->mainPart = $mainPart;
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$this->prepareParts($part, ...$parts);
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parent::__construct($part, ...$parts);
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}
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public function getParts(): array
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{
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return array_merge([$this->mainPart], parent::getParts());
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}
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public function getMediaSubtype(): string
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{
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return 'related';
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}
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private function generateContentId(): string
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{
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return bin2hex(random_bytes(16)).'@symfony';
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}
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private function prepareParts(AbstractPart ...$parts): void
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{
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foreach ($parts as $part) {
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if (!$part->getHeaders()->has('Content-ID')) {
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$part->getHeaders()->setHeaderBody('Id', 'Content-ID', $this->generateContentId());
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}
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}
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}
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}
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