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   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   */
  17  function render_block_core_site_title( $attributes ) {
  18      $site_title = get_bloginfo( 'name' );
  19      if ( ! $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_home() || ( is_front_page() && 'page' === get_option( 'show_on_front' ) ) ? ' 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   */
  61  function 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  }
  69  add_action( 'init', 'register_block_core_site_title' );