<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
// phpcs:disable Generic.Classes.DuplicateClassName.Found -- sitemap-builder.php will require correct class file.
* Sitemaps (per the protocol) are essentially lists of XML fragments;
* lists which are subject to size constraints. The Jetpack_Sitemap_Buffer_Master
* extends the Jetpack_Sitemap_Buffer class to represent the master sitemap
* @package automattic/jetpack
if ( ! defined( 'ABSPATH' ) ) {
* A buffer for constructing master sitemap xml files for users without libxml support.
* @phan-suppress PhanRedefinedClassReference -- Don't conflict with real version.
class Jetpack_Sitemap_Buffer_Master extends Jetpack_Sitemap_Buffer_Fallback {
// @phan-suppress-previous-line UnusedSuppression -- It's used.
* Returns a DOM element that contains all master sitemap elements.
protected function get_root_element() {
if ( ! isset( $this->root ) ) {
$sitemap_index_xsl_url = $this->finder->construct_sitemap_url( 'sitemap-index.xsl' );
$jetpack_version = JETPACK__VERSION;
"<!-- generator='jetpack-{$jetpack_version}' -->" . PHP_EOL
. "<?xml-stylesheet type='text/xsl' href='{$sitemap_index_xsl_url}'?>" . PHP_EOL
. "<sitemapindex xmlns='http://www.sitemaps.org/schemas/sitemap/0.9'>" . PHP_EOL,
$this->byte_capacity -= strlen( implode( '', $this->root ) );