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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Directory : /home/rainic/www/oldTZh/wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/SEO/

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Current File : /home/rainic/www/oldTZh/wp-content/plugins/wp-rocket/inc/ThirdParty/Plugins/SEO/Yoast.php

<?php
declare(strict_types=1);

namespace WP_Rocket\ThirdParty\Plugins\SEO;

use WP_Rocket\Admin\Options_Data;
use WP_Rocket\Event_Management\Subscriber_Interface;

class Yoast implements Subscriber_Interface {
	/**
	 * Options Data instance
	 *
	 * @var Options_Data
	 */
	private $options;

	/**
	 * Constructor
	 *
	 * @param Options_Data $options Options_Data instance.
	 */
	public function __construct( Options_Data $options ) {
		$this->options = $options;
	}

	/**
	 * Array of events this subscriber listens to
	 *
	 * @return array
	 */
	public static function get_subscribed_events() {
		return [
			'rocket_sitemap_preload_list' => [ 'add_sitemap', 15 ],
		];
	}

	/**
	 * Add Yoast SEO sitemap URL to the sitemaps to preload
	 *
	 * @since 2.8
	 *
	 * @param array $sitemaps An array of sitemaps to preload.
	 *
	 * @return array
	 */
	public function add_sitemap( $sitemaps ): array {
		if ( ! is_array( $sitemaps ) ) {
			$sitemaps = (array) $sitemaps;
		}

		if ( ! $this->is_sitemap_enabled() ) {
			return $sitemaps;
		}

		if ( ! class_exists( 'WPSEO_Sitemaps_Router' ) ) {
			return $sitemaps;
		}

		$sitemaps[] = \WPSEO_Sitemaps_Router::get_base_url( 'sitemap_index.xml' );

		return $sitemaps;
	}

	/**
	 * Checks if sitemap is enabled in Yoast SEO
	 *
	 * @since 3.11.1
	 *
	 * @return bool
	 */
	private function is_sitemap_enabled(): bool {
		static $enabled = null;

		if ( ! is_null( $enabled ) ) {
			return $enabled;
		}

		if ( ! rocket_has_constant( 'WPSEO_VERSION' ) ) {
			$enabled = false;

			return $enabled;
		}

		$yoast_seo_xml = get_option( 'wpseo_xml', [] ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

		if ( version_compare( rocket_get_constant( 'WPSEO_VERSION', '' ), '7.0' ) >= 0 ) {
			$yoast_seo                         = get_option( 'wpseo', [] ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
			$yoast_seo_xml['enablexmlsitemap'] = isset( $yoast_seo['enable_xml_sitemap'] ) && $yoast_seo['enable_xml_sitemap']; // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
		}

		$enabled = (bool) $yoast_seo_xml['enablexmlsitemap'];

		return $enabled;
	}
}

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