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<?php

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namespace Yoast\WP\SEO\Initializers;

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use Yoast\WP\SEO\Conditionals\No_Conditionals;

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use Yoast\WP\SEO\Helpers\Options_Helper;

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use Yoast\WP\SEO\Helpers\Redirect_Helper;

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/**

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* Disables the WP core sitemaps.

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class Disable_Core_Sitemaps implements Initializer_Interface {

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use No_Conditionals;

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/**

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* The options helper.

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* @var Options_Helper

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private $options;

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/**

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* The redirect helper.

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* @var Redirect_Helper

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private $redirect;

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/**

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* Sitemaps_Enabled_Conditional constructor.

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* @codeCoverageIgnore

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* @param Options_Helper $options The options helper.

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* @param Redirect_Helper $redirect The redirect helper.

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public function __construct( Options_Helper $options, Redirect_Helper $redirect ) {

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$this->options = $options;

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$this->redirect = $redirect;

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}

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/**

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* Disable the WP core XML sitemaps.

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* @return void

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public function initialize() {

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// This needs to be on priority 15 as that is after our options initialize.

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\add_action( 'plugins_loaded', [ $this, 'maybe_disable_core_sitemaps' ], 15 );

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}

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/**

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* Disables the core sitemaps if Yoast SEO sitemaps are enabled.

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* @return void

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public function maybe_disable_core_sitemaps() {

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if ( $this->options->get( 'enable_xml_sitemap' ) ) {

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\add_filter( 'wp_sitemaps_enabled', '__return_false' );

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\add_action( 'template_redirect', [ $this, 'template_redirect' ], 0 );

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}

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}

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/**

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* Redirects requests to the WordPress sitemap to the Yoast sitemap.

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* @return void

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public function template_redirect() {

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// If there is no path, nothing to do.

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if ( empty( $_SERVER['REQUEST_URI'] ) ) {

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return;

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}

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$path = \sanitize_text_field( \wp_unslash( $_SERVER['REQUEST_URI'] ) );

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// If it's not a wp-sitemap request, nothing to do.

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if ( \substr( $path, 0, 11 ) !== '/wp-sitemap' ) {

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return;

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}

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$redirect = $this->get_redirect_url( $path );

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if ( ! $redirect ) {

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return;

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}

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$this->redirect->do_safe_redirect( \home_url( $redirect ), 301 );

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}

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/**

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* Returns the relative sitemap URL to redirect to.

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* @param string $path The original path.

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* @return string|false The path to redirct to. False if no redirect should be done.

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private function get_redirect_url( $path ) {

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// Start with the simple string comparison so we avoid doing unnecessary regexes.

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if ( $path === '/wp-sitemap.xml' ) {

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return '/sitemap_index.xml';

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}

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if ( \preg_match( '/^\/wp-sitemap-(posts|taxonomies)-(\w+)-(\d+)\.xml$/', $path, $matches ) ) {

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$index = ( (int) $matches[3] - 1 );

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$index = ( $index === 0 ) ? '' : (string) $index;

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return '/' . $matches[2] . '-sitemap' . $index . '.xml';

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}

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if ( \preg_match( '/^\/wp-sitemap-users-(\d+)\.xml$/', $path, $matches ) ) {

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$index = ( (int) $matches[1] - 1 );

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$index = ( $index === 0 ) ? '' : (string) $index;

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return '/author-sitemap' . $index . '.xml';

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}

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return false;

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}

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}

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