1<?php
  2/**
  3 * Server-side rendering of the `core/site-title` block.
  4 *
  5 * @package WordPress
  6 */
  7
  8/**
  9 * Renders the `core/site-title` block on the server.
 10 *
 11 * @since 5.8.0
 12 *
 13 * @param array $attributes The block attributes.
 14 *
 15 * @return string The render.
 16 */
 17function render_block_core_site_title( $attributes ) {
 18	$site_title = get_bloginfo( 'name' );
 19	if ( ! trim( $site_title ) ) {
 20		return '';
 21	}
 22
 23	$tag_name = 'h1';
 24	$classes  = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
 25	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
 26		$classes .= ' has-link-color';
 27	}
 28
 29	if ( isset( $attributes['level'] ) ) {
 30		$tag_name = 0 === $attributes['level'] ? 'p' : 'h' . (int) $attributes['level'];
 31	}
 32
 33	if ( $attributes['isLink'] ) {
 34		$aria_current = ! is_paged() && ( is_front_page() || is_home() && ( (int) get_option( 'page_for_posts' ) !== get_queried_object_id() ) ) ? ' aria-current="page"' : '';
 35		$link_target  = ! empty( $attributes['linkTarget'] ) ? $attributes['linkTarget'] : '_self';
 36
 37		$site_title = sprintf(
 38			'<a href="%1$s" target="%2$s" rel="home"%3$s>%4$s</a>',
 39			esc_url( home_url() ),
 40			esc_attr( $link_target ),
 41			$aria_current,
 42			esc_html( $site_title )
 43		);
 44	}
 45	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => trim( $classes ) ) );
 46
 47	return sprintf(
 48		'<%1$s %2$s>%3$s</%1$s>',
 49		$tag_name,
 50		$wrapper_attributes,
 51		// already pre-escaped if it is a link.
 52		$attributes['isLink'] ? $site_title : esc_html( $site_title )
 53	);
 54}
 55
 56/**
 57 * Registers the `core/site-title` block on the server.
 58 *
 59 * @since 5.8.0
 60 */
 61function register_block_core_site_title() {
 62	register_block_type_from_metadata(
 63		__DIR__ . '/site-title',
 64		array(
 65			'render_callback' => 'render_block_core_site_title',
 66		)
 67	);
 68}
 69add_action( 'init', 'register_block_core_site_title' );
 70