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<?php /** * Sitemaps: Public functions * * This file contains a variety of public functions developers can use to interact with * the XML Sitemaps API. * * @package WordPress * @subpackage Sitemaps * @since 5.5.0 */ /** * Retrieves the current Sitemaps server instance. * * @since 5.5.0 * * @return WP_Sitemaps|null Sitemaps instance, or null if sitemaps are disabled. */ function wp_sitemaps_get_server() { /** * Global Core Sitemaps instance. * * @since 5.5.0 * * @var WP_Sitemaps $wp_sitemaps */ global $wp_sitemaps; $is_enabled = (bool) get_option( 'blog_public' ); /** * Filters whether XML Sitemaps are enabled or not. * * @since 5.5.0 * * @param bool $is_enabled Whether XML Sitemaps are enabled or not. Defaults to true for public sites. */ $is_enabled = (bool) apply_filters( 'wp_sitemaps_enabled', $is_enabled ); if ( ! $is_enabled ) { return null; } // If there isn't a global instance, set and bootstrap the sitemaps system. if ( empty( $wp_sitemaps ) ) { $wp_sitemaps = new WP_Sitemaps(); $wp_sitemaps->init(); /** * Fires when initializing the Sitemaps object. * * Additional sitemaps should be registered on this hook. * * @since 5.5.0 * * @param WP_Sitemaps $sitemaps Server object. */ do_action( 'wp_sitemaps_init', $wp_sitemaps ); } return $wp_sitemaps; } /** * Gets a list of sitemap providers. * * @since 5.5.0 * * @return array $sitemaps A list of registered sitemap providers. */ function wp_get_sitemaps() { $sitemaps = wp_sitemaps_get_server(); if ( ! $sitemaps ) { return array(); } return $sitemaps->registry->get_sitemaps(); } /** * Registers a new sitemap provider. * * @since 5.5.0 * * @param string $name Unique name for the sitemap provider. * @param WP_Sitemaps_Provider $provider The `Sitemaps_Provider` instance implementing the sitemap. * @return bool Returns true if the sitemap was added. False on failure. */ function wp_register_sitemap( $name, WP_Sitemaps_Provider $provider ) { $sitemaps = wp_sitemaps_get_server(); if ( ! $sitemaps ) { return false; } return $sitemaps->registry->add_sitemap( $name, $provider ); } /** * Gets the maximum number of URLs for a sitemap. * * @since 5.5.0 * * @param string $object_type Object type for sitemap to be filtered (e.g. 'post', 'term', 'user'). * @return int The maximum number of URLs. */ function wp_sitemaps_get_max_urls( $object_type ) { /** * Filters the maximum number of URLs displayed on a sitemap. * * @since 5.5.0 * * @param int $max_urls The maximum number of URLs included in a sitemap. Default 2000. * @param string $object_type Object type for sitemap to be filtered (e.g. 'post', 'term', 'user'). */ return apply_filters( 'wp_sitemaps_max_urls', WP_SITEMAPS_MAX_URLS, $object_type ); } if ( ! function_exists( 'esc_xml' ) ) : /** * Escaping for XML blocks. * * @since 5.5.0 * * @param string $text Text to escape. * @return string */ function esc_xml( $text ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals $safe_text = wp_check_invalid_utf8( $text ); $cdata_regex = '\<\!\[CDATA\[.*?\]\]\>'; $regex = <<<EOF / (?=.*?{$cdata_regex}) # lookahead that will match anything followed by a CDATA Section (?<non_cdata_followed_by_cdata>(.*?)) # the "anything" matched by the lookahead (?<cdata>({$cdata_regex})) # the CDATA Section matched by the lookahead | # alternative (?<non_cdata>(.*)) # non-CDATA Section /sx EOF; $safe_text = (string) preg_replace_callback( $regex, function( $matches ) { if ( ! $matches[0] ) { return ''; } elseif ( ! empty( $matches['non_cdata'] ) ) { // escape HTML entities in the non-CDATA Section. return _esc_xml_non_cdata_section( $matches['non_cdata'] ); } // Return the CDATA Section unchanged, escape HTML entities in the rest. return _esc_xml_non_cdata_section( $matches['non_cdata_followed_by_cdata'] ) . $matches['cdata']; }, $safe_text ); /** * Filters a string cleaned and escaped for output in XML. * * Text passed to esc_xml() is stripped of invalid or special characters * before output. HTML named character references are converted to their * equivalent code points. * * @since 5.5.0 * * @param string $safe_text The text after it has been escaped. * @param string $text The text prior to being escaped. */ return apply_filters( 'esc_xml', $safe_text, $text ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals } endif; if ( ! function_exists( '_esc_xml_non_cdata_section' ) ) : /** * Escaping for non-CDATA Section XML blocks. * * @access private * @since 5.5.0 * * @param string $text Text to escape. * @return string */ function _esc_xml_non_cdata_section( $text ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals global $allowedentitynames; $safe_text = _wp_specialchars( $text, ENT_QUOTES ); // Replace HTML entities with their Unicode codepoints, // without doing the same for the 5 XML entities. $html_only_entities = array_diff( $allowedentitynames, array( 'amp', 'lt', 'gt', 'apos', 'quot' ) ); $safe_text = (string) preg_replace_callback( '/&(' . implode( '|', $html_only_entities ) . ');/', function( $matches ) { return html_entity_decode( $matches[0], ENT_HTML5 ); }, $safe_text ); return $safe_text; } endif;
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