itemap-stylesheet' ) );
$paged = absint( get_query_var( 'paged' ) );
// Bail early if this isn't a sitemap or stylesheet route.
if ( ! ( $sitemap || $stylesheet_type ) ) {
return;
}
if ( ! $this->sitemaps_enabled() ) {
$wp_query->set_404();
status_header( 404 );
return;
}
// Render stylesheet if this is stylesheet route.
if ( $stylesheet_type ) {
$stylesheet = new WP_Sitemaps_Stylesheet();
$stylesheet->render_stylesheet( $stylesheet_type );
exit;
}
// Render the index.
if ( 'index' === $sitemap ) {
$sitemap_list = $this->index->get_sitemap_list();
$this->renderer->render_index( $sitemap_list );
exit;
}
$provider = $this->registry->get_provider( $sitemap );
if ( ! $provider ) {
return;
}
if ( empty( $paged ) ) {
$paged = 1;
}
$url_list = $provider->get_url_list( $paged, $object_subtype );
// Force a 404 and bail early if no URLs are present.
if ( empty( $url_list ) ) {
$wp_query->set_404();
status_header( 404 );
return;
}
$this->renderer->render_sitemap( $url_list );
exit;
}
/**
* Redirects a URL to the wp-sitemap.xml
*
* @since 5.5.0
*
* @param bool $bypass Pass-through of the pre_handle_404 filter value.
* @param WP_Query $query The WP_Query object.
* @return bool Bypass value.
*/
public function redirect_sitemapxml( $bypass, $query ) {
// If a plugin has already utilized the pre_handle_404 function, return without action to avoid conflicts.
if ( $bypass ) {
return $bypass;
}
// 'pagename' is for most permalink types, name is for when the %postname% is used as a top-level field.
if ( 'sitemap-xml' === $query->get( 'pagename' )
|| 'sitemap-xml' === $query->get( 'name' )
) {
wp_safe_redirect( $this->index->get_index_url() );
exit();
}
return $bypass;
}
/**
* Adds the sitemap index to robots.txt.
*
* @since 5.5.0
*
* @param string $output robots.txt output.
* @param bool $is_public Whether the site is public.
* @return string The robots.txt output.
*/
public function add_robots( $output, $is_public ) {
if ( $is_public ) {
$output .= "\nSitemap: " . esc_url( $this->index->get_index_url() ) . "\n";
}
return $output;
}
}
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