Breadcrumbs.php

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<?php
namespace Magento\Catalog\Block;

use Magento\Catalog\Helper\Data;
use Magento\Framework\View\Element\Template\Context;
use Magento\Store\Model\Store;

class Breadcrumbs extends \Magento\Framework\View\Element\Template
{
    protected $_catalogData = null;

    public function __construct(Context $context, Data $catalogData, array $data = [])
    {
        $this->_catalogData = $catalogData;
        parent::__construct($context, $data);
    }

    public function getTitleSeparator($store = null)
    {
        $separator = (string)$this->_scopeConfig->getValue(
            'catalog/seo/title_separator',
            \Magento\Store\Model\ScopeInterface::SCOPE_STORE,
            $store
        );
        return ' ' . $separator . ' ';
    }

    protected function _prepareLayout()
    {
        if ($breadcrumbsBlock = $this->getLayout()->getBlock('breadcrumbs')) {
            $breadcrumbsBlock->addCrumb(
                'home',
                [
                    'label' => __('Home'),
                    'title' => __('Go to Home Page'),
                    'link' => $this->_storeManager->getStore()->getBaseUrl()
                ]
            );

            $title = [];
            $path = $this->_catalogData->getBreadcrumbPath();

            foreach ($path as $name => $breadcrumb) {
                $breadcrumbsBlock->addCrumb($name, $breadcrumb);
                $title[] = $breadcrumb['label'];
            }

            $this->pageConfig->getTitle()->set(join($this->getTitleSeparator(), array_reverse($title)));
        }
        return parent::_prepareLayout();
    }
}