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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   * @param array $attributes The block attributes.
  12   *
  13   * @return string The render.
  14   */
  15  function render_block_core_site_title( $attributes ) {
  16      $site_title = get_bloginfo( 'name' );
  17      if ( ! $site_title ) {
  18          return;
  19      }
  20  
  21      $tag_name         = 'h1';
  22      $align_class_name = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
  23  
  24      $aria_current = is_home() || ( is_front_page() && 'page' === get_option( 'show_on_front' ) ) ? ' aria-current="page"' : '';
  25  
  26      if ( isset( $attributes['level'] ) ) {
  27          $tag_name = 0 === $attributes['level'] ? 'p' : 'h' . (int) $attributes['level'];
  28      }
  29  
  30      if ( $attributes['isLink'] ) {
  31          $link_attrs = array(
  32              'href="' . esc_url( get_bloginfo( 'url' ) ) . '"',
  33              'rel="' . esc_attr( 'home' ) . '"',
  34              $aria_current,
  35          );
  36          if ( '_blank' === $attributes['linkTarget'] ) {
  37              $link_attrs[] = 'target="_blank"';
  38          }
  39          $site_title = sprintf( '<a %1$s>%2$s</a>', implode( ' ', $link_attrs ), esc_html( $site_title ) );
  40      }
  41      $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
  42  
  43      return sprintf(
  44          '<%1$s %2$s>%3$s</%1$s>',
  45          $tag_name,
  46          $wrapper_attributes,
  47          // already pre-escaped if it is a link.
  48          $attributes['isLink'] ? $site_title : esc_html( $site_title )
  49      );
  50  }
  51  
  52  /**
  53   * Registers the `core/site-title` block on the server.
  54   */
  55  function register_block_core_site_title() {
  56      register_block_type_from_metadata(
  57          __DIR__ . '/site-title',
  58          array(
  59              'render_callback' => 'render_block_core_site_title',
  60          )
  61      );
  62  }
  63  add_action( 'init', 'register_block_core_site_title' );