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<?php
/**
* Sitemaps: WP_Sitemaps_Taxonomies class
*
* Builds the sitemaps for the 'taxonomy' object type.
*
* @package WordPress
* @subpackage Sitemaps
* @since 5.5.0
*/
/**
* Taxonomies XML sitemap provider.
*
* @since 5.5.0
*/
class WP_Sitemaps_Taxonomies extends WP_Sitemaps_Provider {
/**
* WP_Sitemaps_Taxonomies constructor.
*
* @since 5.5.0
*/
public function __construct() {
$this->name = 'taxonomies';
$this->object_type = 'term';
}
/**
* Returns all public, registered taxonomies.
*
* @since 5.5.0
*
* @return WP_Taxonomy[] Array of registered taxonomy objects keyed by their name.
*/
public function get_object_subtypes() {
$taxonomies = get_taxonomies( array( 'public' => true ), 'objects' );
$taxonomies = array_filter( $taxonomies, 'is_taxonomy_viewable' );
/**
* Filters the list of taxonomy object subtypes available within the sitemap.
*
* @since 5.5.0
*
* @param WP_Taxonomy[] $taxonomies Array of registered taxonomy objects keyed by their name.
*/
return apply_filters( 'wp_sitemaps_taxonomies', $taxonomies );
}
/**
* Gets a URL list for a taxonomy sitemap.
*
* @since 5.5.0
* @since 5.9.0 Renamed `$taxonomy` to `$object_subtype` to match parent class
* for PHP 8 named parameter support.
*
* @param int $page_num Page of results.
* @param string $object_subtype Optional. Taxonomy name. Default empty.
* @return array[] Array of URL information for a sitemap.
*/
public function get_url_list( $page_num, $object_subtype = '' ) {
// Restores the more descriptive, specific name for use within this method.
$taxonomy = $object_subtype;
$supported_types = $this->get_object_subtypes();
// Bail early if the queried taxonomy is not supported.
if ( ! isset( $supported_types[ $taxonomy ] ) ) {
return array();
}
/**
* Filters the taxonomies URL list before it is generated.
*
* Returning a non-null value will effectively short-circuit the generation,
* returning that value instead.
*
* @since 5.5.0
*
* @param array[]|null $url_list The URL list. Default null.
* @param string $taxonomy Taxonomy name.
* @param int $page_num Page of results.
*/
$url_list = apply_filters(
'wp_sitemaps_taxonomies_pre_url_list',
null,
$taxonomy,
$page_num
);
if ( null !== $url_list ) {
return $url_list;
}
$url_list = array();
// Offset by how many terms should be included in previous pages.
$offset = ( $page_num - 1 ) * wp_sitemaps_get_max_urls( $this->object_type );
$args = $this->get_taxonomies_query_args( $taxonomy );
$args['fields'] = 'all';
$args['offset'] = $offset;
$taxonomy_terms = new WP_Term_Query( $args );
if ( ! empty( $taxonomy_terms->terms ) ) {
foreach ( $taxonomy_terms->terms as $term ) {
$term_link = get_term_link( $term, $taxonomy );
if ( is_wp_error( $term_link ) ) {
continue;
}
$sitemap_entry = array(
'loc' => $term_link,
);
/**
* Filters the sitemap entry for an individual term.
*
* @since 5.5.0
* @since 6.0.0 Added `$term` argument containing the term object.
*
* @param array $sitemap_entry Sitemap entry for the term.
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy name.
* @param WP_Term $term Term object.
*/
$sitemap_entry = apply_filters( 'wp_sitemaps_taxonomies_entry', $sitemap_entry, $term->term_id, $taxonomy, $term );
$url_list[] = $sitemap_entry;
}
}
return $url_list;
}
/**
* Gets the max number of pages available for the object type.
*
* @since 5.5.0
* @since 5.9.0 Renamed `$taxonomy` to `$object_subtype` to match parent class
* for PHP 8 named parameter support.
*
* @param string $object_subtype Optional. Taxonomy name. Default empty.
* @return int Total number of pages.
*/
public function get_max_num_pages( $object_subtype = '' ) {
if ( empty( $object_subtype ) ) {
return 0;
}
// Restores the more descriptive, specific name for use within this method.
$taxonomy = $object_subtype;
/**
* Filters the max number of pages for a taxonomy sitemap before it is generated.
*
* Passing a non-null value will short-circuit the generation,
* returning that value instead.
*
* @since 5.5.0
*
* @param int|null $max_num_pages The maximum number of pages. Default null.
* @param string $taxonomy Taxonomy name.
*/
$max_num_pages = apply_filters( 'wp_sitemaps_taxonomies_pre_max_num_pages', null, $taxonomy );
if ( null !== $max_num_pages ) {
return $max_num_pages;
}
$term_count = wp_count_terms( $this->get_taxonomies_query_args( $taxonomy ) );
return (int) ceil( $term_count / wp_sitemaps_get_max_urls( $this->object_type ) );
}
/**
* Returns the query args for retrieving taxonomy terms to list in the sitemap.
*
* @since 5.5.0
*
* @param string $taxonomy Taxonomy name.
* @return array Array of WP_Term_Query arguments.
*/
protected function get_taxonomies_query_args( $taxonomy ) {
/**
* Filters the taxonomy terms query arguments.
*
* Allows modification of the taxonomy query arguments before querying.
*
* @see WP_Term_Query for a full list of arguments
*
* @since 5.5.0
*
* @param array $args Array of WP_Term_Query arguments.
* @param string $taxonomy Taxonomy name.
*/
$args = apply_filters(
'wp_sitemaps_taxonomies_query_args',
array(
'taxonomy' => $taxonomy,
'orderby' => 'term_order',
'number' => wp_sitemaps_get_max_urls( $this->object_type ),
'hide_empty' => true,
'hierarchical' => false,
'update_term_meta_cache' => false,
),
$taxonomy
);
return $args;
}
}