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/wp-includes/ -> block-template-utils.php (source)

   1  <?php
   2  /**
   3   * Utilities used to fetch and create templates and template parts.
   4   *
   5   * @package WordPress
   6   * @since 5.8.0
   7   */
   8  
   9  // Define constants for supported wp_template_part_area taxonomy.
  10  if ( ! defined( 'WP_TEMPLATE_PART_AREA_HEADER' ) ) {
  11      define( 'WP_TEMPLATE_PART_AREA_HEADER', 'header' );
  12  }
  13  if ( ! defined( 'WP_TEMPLATE_PART_AREA_FOOTER' ) ) {
  14      define( 'WP_TEMPLATE_PART_AREA_FOOTER', 'footer' );
  15  }
  16  if ( ! defined( 'WP_TEMPLATE_PART_AREA_SIDEBAR' ) ) {
  17      define( 'WP_TEMPLATE_PART_AREA_SIDEBAR', 'sidebar' );
  18  }
  19  if ( ! defined( 'WP_TEMPLATE_PART_AREA_UNCATEGORIZED' ) ) {
  20      define( 'WP_TEMPLATE_PART_AREA_UNCATEGORIZED', 'uncategorized' );
  21  }
  22  
  23  /**
  24   * For backward compatibility reasons,
  25   * block themes might be using block-templates or block-template-parts,
  26   * this function ensures we fallback to these folders properly.
  27   *
  28   * @since 5.9.0
  29   *
  30   * @param string $theme_stylesheet The stylesheet. Default is to leverage the main theme root.
  31   *
  32   * @return string[] {
  33   *     Folder names used by block themes.
  34   *
  35   *     @type string $wp_template      Theme-relative directory name for block templates.
  36   *     @type string $wp_template_part Theme-relative directory name for block template parts.
  37   * }
  38   */
  39  function get_block_theme_folders( $theme_stylesheet = null ) {
  40      $theme = wp_get_theme( (string) $theme_stylesheet );
  41      if ( ! $theme->exists() ) {
  42          // Return the default folders if the theme doesn't exist.
  43          return array(
  44              'wp_template'      => 'templates',
  45              'wp_template_part' => 'parts',
  46          );
  47      }
  48      return $theme->get_block_template_folders();
  49  }
  50  
  51  /**
  52   * Returns a filtered list of allowed area values for template parts.
  53   *
  54   * @since 5.9.0
  55   *
  56   * @return array[] {
  57   *     The allowed template part area values.
  58   *
  59   *     @type array ...$0 {
  60   *         Data for the allowed template part area.
  61   *
  62   *         @type string $area        Template part area name.
  63   *         @type string $label       Template part area label.
  64   *         @type string $description Template part area description.
  65   *         @type string $icon        Template part area icon.
  66   *         @type string $area_tag    Template part area tag.
  67   *     }
  68   * }
  69   */
  70  function get_allowed_block_template_part_areas() {
  71      $default_area_definitions = array(
  72          array(
  73              'area'        => WP_TEMPLATE_PART_AREA_UNCATEGORIZED,
  74              'label'       => _x( 'General', 'template part area' ),
  75              'description' => __(
  76                  'General templates often perform a specific role like displaying post content, and are not tied to any particular area.'
  77              ),
  78              'icon'        => 'layout',
  79              'area_tag'    => 'div',
  80          ),
  81          array(
  82              'area'        => WP_TEMPLATE_PART_AREA_HEADER,
  83              'label'       => _x( 'Header', 'template part area' ),
  84              'description' => __(
  85                  'The Header template defines a page area that typically contains a title, logo, and main navigation.'
  86              ),
  87              'icon'        => 'header',
  88              'area_tag'    => 'header',
  89          ),
  90          array(
  91              'area'        => WP_TEMPLATE_PART_AREA_FOOTER,
  92              'label'       => _x( 'Footer', 'template part area' ),
  93              'description' => __(
  94                  'The Footer template defines a page area that typically contains site credits, social links, or any other combination of blocks.'
  95              ),
  96              'icon'        => 'footer',
  97              'area_tag'    => 'footer',
  98          ),
  99      );
 100  
 101      /**
 102       * Filters the list of allowed template part area values.
 103       *
 104       * @since 5.9.0
 105       *
 106       * @param array[] $default_area_definitions {
 107       *     The allowed template part area values.
 108       *
 109       *     @type array ...$0 {
 110       *         Data for the template part area.
 111       *
 112       *         @type string $area        Template part area name.
 113       *         @type string $label       Template part area label.
 114       *         @type string $description Template part area description.
 115       *         @type string $icon        Template part area icon.
 116       *         @type string $area_tag    Template part area tag.
 117       *     }
 118       * }
 119       */
 120      return apply_filters( 'default_wp_template_part_areas', $default_area_definitions );
 121  }
 122  
 123  
 124  /**
 125   * Returns a filtered list of default template types, containing their
 126   * localized titles and descriptions.
 127   *
 128   * @since 5.9.0
 129   *
 130   * @return array[] {
 131   *     The default template types.
 132   *
 133   *     @type array ...$0 {
 134   *         Data for the template type.
 135   *
 136   *         @type string $title       Template type title.
 137   *         @type string $description Template type description.
 138   *    }
 139   * }
 140   */
 141  function get_default_block_template_types() {
 142      $default_template_types = array(
 143          'index'          => array(
 144              'title'       => _x( 'Index', 'Template name' ),
 145              'description' => __( 'Used as a fallback template for all pages when a more specific template is not defined.' ),
 146          ),
 147          'home'           => array(
 148              'title'       => _x( 'Blog Home', 'Template name' ),
 149              'description' => __( 'Displays the latest posts as either the site homepage or as the "Posts page" as defined under reading settings. If it exists, the Front Page template overrides this template when posts are shown on the homepage.' ),
 150          ),
 151          'front-page'     => array(
 152              'title'       => _x( 'Front Page', 'Template name' ),
 153              'description' => __( 'Displays your site\'s homepage, whether it is set to display latest posts or a static page. The Front Page template takes precedence over all templates.' ),
 154          ),
 155          'singular'       => array(
 156              'title'       => _x( 'Single Entries', 'Template name' ),
 157              'description' => __( 'Displays any single entry, such as a post or a page. This template will serve as a fallback when a more specific template (e.g. Single Post, Page, or Attachment) cannot be found.' ),
 158          ),
 159          'single'         => array(
 160              'title'       => _x( 'Single Posts', 'Template name' ),
 161              'description' => __( 'Displays a single post on your website unless a custom template has been applied to that post or a dedicated template exists.' ),
 162          ),
 163          'page'           => array(
 164              'title'       => _x( 'Pages', 'Template name' ),
 165              'description' => __( 'Displays a static page unless a custom template has been applied to that page or a dedicated template exists.' ),
 166          ),
 167          'archive'        => array(
 168              'title'       => _x( 'All Archives', 'Template name' ),
 169              'description' => __( 'Displays any archive, including posts by a single author, category, tag, taxonomy, custom post type, and date. This template will serve as a fallback when more specific templates (e.g. Category or Tag) cannot be found.' ),
 170          ),
 171          'author'         => array(
 172              'title'       => _x( 'Author Archives', 'Template name' ),
 173              'description' => __( 'Displays a single author\'s post archive. This template will serve as a fallback when a more specific template (e.g. Author: Admin) cannot be found.' ),
 174          ),
 175          'category'       => array(
 176              'title'       => _x( 'Category Archives', 'Template name' ),
 177              'description' => __( 'Displays a post category archive. This template will serve as a fallback when a more specific template (e.g. Category: Recipes) cannot be found.' ),
 178          ),
 179          'taxonomy'       => array(
 180              'title'       => _x( 'Taxonomy', 'Template name' ),
 181              'description' => __( 'Displays a custom taxonomy archive. Like categories and tags, taxonomies have terms which you use to classify things. For example: a taxonomy named "Art" can have multiple terms, such as "Modern" and "18th Century." This template will serve as a fallback when a more specific template (e.g. Taxonomy: Art) cannot be found.' ),
 182          ),
 183          'date'           => array(
 184              'title'       => _x( 'Date Archives', 'Template name' ),
 185              'description' => __( 'Displays a post archive when a specific date is visited (e.g., example.com/2023/).' ),
 186          ),
 187          'tag'            => array(
 188              'title'       => _x( 'Tag Archives', 'Template name' ),
 189              'description' => __( 'Displays a post tag archive. This template will serve as a fallback when a more specific template (e.g. Tag: Pizza) cannot be found.' ),
 190          ),
 191          'attachment'     => array(
 192              'title'       => __( 'Attachment Pages' ),
 193              'description' => __( 'Displays when a visitor views the dedicated page that exists for any media attachment.' ),
 194          ),
 195          'search'         => array(
 196              'title'       => _x( 'Search Results', 'Template name' ),
 197              'description' => __( 'Displays when a visitor performs a search on your website.' ),
 198          ),
 199          'privacy-policy' => array(
 200              'title'       => __( 'Privacy Policy' ),
 201              'description' => __( 'Displays your site\'s Privacy Policy page.' ),
 202          ),
 203          '404'            => array(
 204              'title'       => _x( 'Page: 404', 'Template name' ),
 205              'description' => __( 'Displays when a visitor views a non-existent page, such as a dead link or a mistyped URL.' ),
 206          ),
 207      );
 208  
 209      // Add a title and description to post format templates.
 210      $post_formats = get_post_format_strings();
 211      foreach ( $post_formats as $post_format_slug => $post_format_name ) {
 212          $default_template_types[ 'taxonomy-post_format-post-format-' . $post_format_slug ] = array(
 213              'title'       => sprintf(
 214                  /* translators: %s: Post format name. */
 215                  _x( 'Post Format: %s', 'Template name' ),
 216                  $post_format_name
 217              ),
 218              'description' => sprintf(
 219                  /* translators: %s: Post format name. */
 220                  __( 'Displays the %s post format archive.' ),
 221                  $post_format_name
 222              ),
 223          );
 224      }
 225  
 226      /**
 227       * Filters the list of default template types.
 228       *
 229       * @since 5.9.0
 230       *
 231       * @param array[] $default_template_types {
 232       *     The default template types.
 233       *
 234       *     @type array ...$0 {
 235       *         Data for the template type.
 236       *
 237       *         @type string $title       Template type title.
 238       *         @type string $description Template type description.
 239       *    }
 240       * }
 241       */
 242      return apply_filters( 'default_template_types', $default_template_types );
 243  }
 244  
 245  /**
 246   * Checks whether the input 'area' is a supported value.
 247   * Returns the input if supported, otherwise returns the 'uncategorized' value.
 248   *
 249   * @since 5.9.0
 250   * @access private
 251   *
 252   * @param string $type Template part area name.
 253   * @return string Input if supported, else the uncategorized value.
 254   */
 255  function _filter_block_template_part_area( $type ) {
 256      $allowed_areas = array_map(
 257          static function ( $item ) {
 258              return $item['area'];
 259          },
 260          get_allowed_block_template_part_areas()
 261      );
 262      if ( in_array( $type, $allowed_areas, true ) ) {
 263          return $type;
 264      }
 265  
 266      $warning_message = sprintf(
 267          /* translators: %1$s: Template area type, %2$s: the uncategorized template area value. */
 268          __( '"%1$s" is not a supported wp_template_part area value and has been added as "%2$s".' ),
 269          $type,
 270          WP_TEMPLATE_PART_AREA_UNCATEGORIZED
 271      );
 272      wp_trigger_error( __FUNCTION__, $warning_message );
 273      return WP_TEMPLATE_PART_AREA_UNCATEGORIZED;
 274  }
 275  
 276  /**
 277   * Finds all nested template part file paths in a theme's directory.
 278   *
 279   * @since 5.9.0
 280   * @access private
 281   *
 282   * @param string $base_directory The theme's file path.
 283   * @return string[] A list of paths to all template part files.
 284   */
 285  function _get_block_templates_paths( $base_directory ) {
 286      static $template_path_list = array();
 287      if ( isset( $template_path_list[ $base_directory ] ) ) {
 288          return $template_path_list[ $base_directory ];
 289      }
 290      $path_list = array();
 291      if ( is_dir( $base_directory ) ) {
 292          $nested_files      = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $base_directory ) );
 293          $nested_html_files = new RegexIterator( $nested_files, '/^.+\.html$/i', RecursiveRegexIterator::GET_MATCH );
 294          foreach ( $nested_html_files as $path => $file ) {
 295              $path_list[] = $path;
 296          }
 297      }
 298      $template_path_list[ $base_directory ] = $path_list;
 299      return $path_list;
 300  }
 301  
 302  /**
 303   * Retrieves the template file from the theme for a given slug.
 304   *
 305   * @since 5.9.0
 306   * @access private
 307   *
 308   * @param string $template_type Template type. Either 'wp_template' or 'wp_template_part'.
 309   * @param string $slug          Template slug.
 310   * @return array|null {
 311   *     Array with template metadata if $template_type is one of 'wp_template' or 'wp_template_part',
 312   *     null otherwise.
 313   *
 314   *     @type string   $slug      Template slug.
 315   *     @type string   $path      Template file path.
 316   *     @type string   $theme     Theme slug.
 317   *     @type string   $type      Template type.
 318   *     @type string   $area      Template area. Only for 'wp_template_part'.
 319   *     @type string   $title     Optional. Template title.
 320   *     @type string[] $postTypes Optional. List of post types that the template supports. Only for 'wp_template'.
 321   * }
 322   */
 323  function _get_block_template_file( $template_type, $slug ) {
 324      if ( 'wp_template' !== $template_type && 'wp_template_part' !== $template_type ) {
 325          return null;
 326      }
 327  
 328      $themes = array(
 329          get_stylesheet() => get_stylesheet_directory(),
 330          get_template()   => get_template_directory(),
 331      );
 332      foreach ( $themes as $theme_slug => $theme_dir ) {
 333          $template_base_paths = get_block_theme_folders( $theme_slug );
 334          $file_path           = $theme_dir . '/' . $template_base_paths[ $template_type ] . '/' . $slug . '.html';
 335          if ( file_exists( $file_path ) ) {
 336              $new_template_item = array(
 337                  'slug'  => $slug,
 338                  'path'  => $file_path,
 339                  'theme' => $theme_slug,
 340                  'type'  => $template_type,
 341              );
 342  
 343              if ( 'wp_template_part' === $template_type ) {
 344                  return _add_block_template_part_area_info( $new_template_item );
 345              }
 346  
 347              if ( 'wp_template' === $template_type ) {
 348                  return _add_block_template_info( $new_template_item );
 349              }
 350  
 351              return $new_template_item;
 352          }
 353      }
 354  
 355      return null;
 356  }
 357  
 358  /**
 359   * Retrieves the template files from the theme.
 360   *
 361   * @since 5.9.0
 362   * @since 6.3.0 Added the `$query` parameter.
 363   * @access private
 364   *
 365   * @param string $template_type Template type. Either 'wp_template' or 'wp_template_part'.
 366   * @param array  $query {
 367   *     Arguments to retrieve templates. Optional, empty by default.
 368   *
 369   *     @type string[] $slug__in     List of slugs to include.
 370   *     @type string[] $slug__not_in List of slugs to skip.
 371   *     @type string   $area         A 'wp_template_part_area' taxonomy value to filter by (for 'wp_template_part' template type only).
 372   *     @type string   $post_type    Post type to get the templates for.
 373   * }
 374   *
 375   * @return array|null Template files on success, null if `$template_type` is not matched.
 376   */
 377  function _get_block_templates_files( $template_type, $query = array() ) {
 378      if ( 'wp_template' !== $template_type && 'wp_template_part' !== $template_type ) {
 379          return null;
 380      }
 381  
 382      $default_template_types = array();
 383      if ( 'wp_template' === $template_type ) {
 384          $default_template_types = get_default_block_template_types();
 385      }
 386  
 387      // Prepare metadata from $query.
 388      $slugs_to_include = isset( $query['slug__in'] ) ? $query['slug__in'] : array();
 389      $slugs_to_skip    = isset( $query['slug__not_in'] ) ? $query['slug__not_in'] : array();
 390      $area             = isset( $query['area'] ) ? $query['area'] : null;
 391      $post_type        = isset( $query['post_type'] ) ? $query['post_type'] : '';
 392  
 393      $stylesheet = get_stylesheet();
 394      $template   = get_template();
 395      $themes     = array(
 396          $stylesheet => get_stylesheet_directory(),
 397      );
 398      // Add the parent theme if it's not the same as the current theme.
 399      if ( $stylesheet !== $template ) {
 400          $themes[ $template ] = get_template_directory();
 401      }
 402      $template_files = array();
 403      foreach ( $themes as $theme_slug => $theme_dir ) {
 404          $template_base_paths  = get_block_theme_folders( $theme_slug );
 405          $theme_template_files = _get_block_templates_paths( $theme_dir . '/' . $template_base_paths[ $template_type ] );
 406          foreach ( $theme_template_files as $template_file ) {
 407              $template_base_path = $template_base_paths[ $template_type ];
 408              $template_slug      = substr(
 409                  $template_file,
 410                  // Starting position of slug.
 411                  strpos( $template_file, $template_base_path . DIRECTORY_SEPARATOR ) + 1 + strlen( $template_base_path ),
 412                  // Subtract ending '.html'.
 413                  -5
 414              );
 415  
 416              // Skip this item if its slug doesn't match any of the slugs to include.
 417              if ( ! empty( $slugs_to_include ) && ! in_array( $template_slug, $slugs_to_include, true ) ) {
 418                  continue;
 419              }
 420  
 421              // Skip this item if its slug matches any of the slugs to skip.
 422              if ( ! empty( $slugs_to_skip ) && in_array( $template_slug, $slugs_to_skip, true ) ) {
 423                  continue;
 424              }
 425  
 426              /*
 427               * The child theme items (stylesheet) are processed before the parent theme's (template).
 428               * If a child theme defines a template, prevent the parent template from being added to the list as well.
 429               */
 430              if ( isset( $template_files[ $template_slug ] ) ) {
 431                  continue;
 432              }
 433  
 434              $new_template_item = array(
 435                  'slug'  => $template_slug,
 436                  'path'  => $template_file,
 437                  'theme' => $theme_slug,
 438                  'type'  => $template_type,
 439              );
 440  
 441              if ( 'wp_template_part' === $template_type ) {
 442                  $candidate = _add_block_template_part_area_info( $new_template_item );
 443                  if ( ! isset( $area ) || ( isset( $area ) && $area === $candidate['area'] ) ) {
 444                      $template_files[ $template_slug ] = $candidate;
 445                  }
 446              }
 447  
 448              if ( 'wp_template' === $template_type ) {
 449                  $candidate = _add_block_template_info( $new_template_item );
 450                  $is_custom = ! isset( $default_template_types[ $candidate['slug'] ] );
 451  
 452                  if (
 453                      ! $post_type ||
 454                      ( $post_type && isset( $candidate['postTypes'] ) && in_array( $post_type, $candidate['postTypes'], true ) )
 455                  ) {
 456                      $template_files[ $template_slug ] = $candidate;
 457                  }
 458  
 459                  // The custom templates with no associated post types are available for all post types.
 460                  if ( $post_type && ! isset( $candidate['postTypes'] ) && $is_custom ) {
 461                      $template_files[ $template_slug ] = $candidate;
 462                  }
 463              }
 464          }
 465      }
 466  
 467      return array_values( $template_files );
 468  }
 469  
 470  /**
 471   * Attempts to add custom template information to the template item.
 472   *
 473   * @since 5.9.0
 474   * @access private
 475   *
 476   * @param array $template_item Template to add information to (requires 'slug' field).
 477   * @return array Template item.
 478   */
 479  function _add_block_template_info( $template_item ) {
 480      if ( ! wp_theme_has_theme_json() ) {
 481          return $template_item;
 482      }
 483  
 484      $theme_data = wp_get_theme_data_custom_templates();
 485      if ( isset( $theme_data[ $template_item['slug'] ] ) ) {
 486          $template_item['title']     = $theme_data[ $template_item['slug'] ]['title'];
 487          $template_item['postTypes'] = $theme_data[ $template_item['slug'] ]['postTypes'];
 488      }
 489  
 490      return $template_item;
 491  }
 492  
 493  /**
 494   * Attempts to add the template part's area information to the input template.
 495   *
 496   * @since 5.9.0
 497   * @access private
 498   *
 499   * @param array $template_info Template to add information to (requires 'type' and 'slug' fields).
 500   * @return array Template info.
 501   */
 502  function _add_block_template_part_area_info( $template_info ) {
 503      if ( wp_theme_has_theme_json() ) {
 504          $theme_data = wp_get_theme_data_template_parts();
 505      }
 506  
 507      if ( isset( $theme_data[ $template_info['slug'] ]['area'] ) ) {
 508          $template_info['title'] = $theme_data[ $template_info['slug'] ]['title'];
 509          $template_info['area']  = _filter_block_template_part_area( $theme_data[ $template_info['slug'] ]['area'] );
 510      } else {
 511          $template_info['area'] = WP_TEMPLATE_PART_AREA_UNCATEGORIZED;
 512      }
 513  
 514      return $template_info;
 515  }
 516  
 517  /**
 518   * Returns an array containing the references of
 519   * the passed blocks and their inner blocks.
 520   *
 521   * @since 5.9.0
 522   * @access private
 523   *
 524   * @param array $blocks array of blocks.
 525   * @return array block references to the passed blocks and their inner blocks.
 526   */
 527  function _flatten_blocks( &$blocks ) {
 528      $all_blocks = array();
 529      $queue      = array();
 530      foreach ( $blocks as &$block ) {
 531          $queue[] = &$block;
 532      }
 533  
 534      while ( count( $queue ) > 0 ) {
 535          $block = &$queue[0];
 536          array_shift( $queue );
 537          $all_blocks[] = &$block;
 538  
 539          if ( ! empty( $block['innerBlocks'] ) ) {
 540              foreach ( $block['innerBlocks'] as &$inner_block ) {
 541                  $queue[] = &$inner_block;
 542              }
 543          }
 544      }
 545  
 546      return $all_blocks;
 547  }
 548  
 549  /**
 550   * Injects the active theme's stylesheet as a `theme` attribute
 551   * into a given template part block.
 552   *
 553   * @since 6.4.0
 554   * @access private
 555   *
 556   * @param array $block a parsed block.
 557   */
 558  function _inject_theme_attribute_in_template_part_block( &$block ) {
 559      if (
 560          'core/template-part' === $block['blockName'] &&
 561          ! isset( $block['attrs']['theme'] )
 562      ) {
 563          $block['attrs']['theme'] = get_stylesheet();
 564      }
 565  }
 566  
 567  /**
 568   * Removes the `theme` attribute from a given template part block.
 569   *
 570   * @since 6.4.0
 571   * @access private
 572   *
 573   * @param array $block a parsed block.
 574   */
 575  function _remove_theme_attribute_from_template_part_block( &$block ) {
 576      if (
 577          'core/template-part' === $block['blockName'] &&
 578          isset( $block['attrs']['theme'] )
 579      ) {
 580          unset( $block['attrs']['theme'] );
 581      }
 582  }
 583  
 584  /**
 585   * Builds a unified template object based on a theme file.
 586   *
 587   * @since 5.9.0
 588   * @since 6.3.0 Added `modified` property to template objects.
 589   * @access private
 590   *
 591   * @param array  $template_file Theme file.
 592   * @param string $template_type Template type. Either 'wp_template' or 'wp_template_part'.
 593   * @return WP_Block_Template Template.
 594   */
 595  function _build_block_template_result_from_file( $template_file, $template_type ) {
 596      $default_template_types = get_default_block_template_types();
 597      $theme                  = get_stylesheet();
 598  
 599      $template                 = new WP_Block_Template();
 600      $template->id             = $theme . '//' . $template_file['slug'];
 601      $template->theme          = $theme;
 602      $template->content        = file_get_contents( $template_file['path'] );
 603      $template->slug           = $template_file['slug'];
 604      $template->source         = 'theme';
 605      $template->type           = $template_type;
 606      $template->title          = ! empty( $template_file['title'] ) ? $template_file['title'] : $template_file['slug'];
 607      $template->status         = 'publish';
 608      $template->has_theme_file = true;
 609      $template->is_custom      = true;
 610      $template->modified       = null;
 611  
 612      if ( 'wp_template' === $template_type ) {
 613          $registered_template = WP_Block_Templates_Registry::get_instance()->get_by_slug( $template_file['slug'] );
 614          if ( $registered_template ) {
 615              $template->plugin      = $registered_template->plugin;
 616              $template->title       = empty( $template->title ) || $template->title === $template->slug ? $registered_template->title : $template->title;
 617              $template->description = empty( $template->description ) ? $registered_template->description : $template->description;
 618          }
 619      }
 620  
 621      if ( 'wp_template' === $template_type && isset( $default_template_types[ $template_file['slug'] ] ) ) {
 622          $template->description = $default_template_types[ $template_file['slug'] ]['description'];
 623          $template->title       = $default_template_types[ $template_file['slug'] ]['title'];
 624          $template->is_custom   = false;
 625      }
 626  
 627      if ( 'wp_template' === $template_type && isset( $template_file['postTypes'] ) ) {
 628          $template->post_types = $template_file['postTypes'];
 629      }
 630  
 631      if ( 'wp_template_part' === $template_type && isset( $template_file['area'] ) ) {
 632          $template->area = $template_file['area'];
 633      }
 634  
 635      if ( 'wp_template_part' === $template->type ) {
 636          /*
 637           * In order for hooked blocks to be inserted at positions first_child and last_child in a template part,
 638           * we need to wrap its content a mock template part block and traverse it.
 639           */
 640          $content           = get_comment_delimited_block_content(
 641              'core/template-part',
 642              array(),
 643              $template->content
 644          );
 645          $content           = apply_block_hooks_to_content(
 646              $content,
 647              $template,
 648              'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata'
 649          );
 650          $template->content = remove_serialized_parent_block( $content );
 651      } else {
 652          $template->content = apply_block_hooks_to_content(
 653              $template->content,
 654              $template,
 655              'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata'
 656          );
 657      }
 658  
 659      return $template;
 660  }
 661  
 662  /**
 663   * Builds the title and description of a post-specific template based on the underlying referenced post.
 664   *
 665   * Mutates the underlying template object.
 666   *
 667   * @since 6.1.0
 668   * @access private
 669   *
 670   * @param string            $post_type Post type, e.g. page, post, product.
 671   * @param string            $slug      Slug of the post, e.g. a-story-about-shoes.
 672   * @param WP_Block_Template $template  Template to mutate adding the description and title computed.
 673   * @return bool Returns true if the referenced post was found and false otherwise.
 674   */
 675  function _wp_build_title_and_description_for_single_post_type_block_template( $post_type, $slug, WP_Block_Template $template ) {
 676      $post_type_object = get_post_type_object( $post_type );
 677  
 678      $default_args = array(
 679          'post_type'              => $post_type,
 680          'post_status'            => 'publish',
 681          'posts_per_page'         => 1,
 682          'update_post_meta_cache' => false,
 683          'update_post_term_cache' => false,
 684          'ignore_sticky_posts'    => true,
 685          'no_found_rows'          => true,
 686      );
 687  
 688      $args = array(
 689          'name' => $slug,
 690      );
 691      $args = wp_parse_args( $args, $default_args );
 692  
 693      $posts_query = new WP_Query( $args );
 694  
 695      if ( empty( $posts_query->posts ) ) {
 696          $template->title = sprintf(
 697              /* translators: Custom template title in the Site Editor referencing a post that was not found. 1: Post type singular name, 2: Post type slug. */
 698              __( 'Not found: %1$s (%2$s)' ),
 699              $post_type_object->labels->singular_name,
 700              $slug
 701          );
 702  
 703          return false;
 704      }
 705  
 706      $post_title = $posts_query->posts[0]->post_title;
 707  
 708      $template->title = sprintf(
 709          /* translators: Custom template title in the Site Editor. 1: Post type singular name, 2: Post title. */
 710          __( '%1$s: %2$s' ),
 711          $post_type_object->labels->singular_name,
 712          $post_title
 713      );
 714  
 715      $template->description = sprintf(
 716          /* translators: Custom template description in the Site Editor. %s: Post title. */
 717          __( 'Template for %s' ),
 718          $post_title
 719      );
 720  
 721      $args = array(
 722          'title' => $post_title,
 723      );
 724      $args = wp_parse_args( $args, $default_args );
 725  
 726      $posts_with_same_title_query = new WP_Query( $args );
 727  
 728      if ( count( $posts_with_same_title_query->posts ) > 1 ) {
 729          $template->title = sprintf(
 730              /* translators: Custom template title in the Site Editor. 1: Template title, 2: Post type slug. */
 731              __( '%1$s (%2$s)' ),
 732              $template->title,
 733              $slug
 734          );
 735      }
 736  
 737      return true;
 738  }
 739  
 740  /**
 741   * Builds the title and description of a taxonomy-specific template based on the underlying entity referenced.
 742   *
 743   * Mutates the underlying template object.
 744   *
 745   * @since 6.1.0
 746   * @access private
 747   *
 748   * @param string            $taxonomy Identifier of the taxonomy, e.g. category.
 749   * @param string            $slug     Slug of the term, e.g. shoes.
 750   * @param WP_Block_Template $template Template to mutate adding the description and title computed.
 751   * @return bool True if the term referenced was found and false otherwise.
 752   */
 753  function _wp_build_title_and_description_for_taxonomy_block_template( $taxonomy, $slug, WP_Block_Template $template ) {
 754      $taxonomy_object = get_taxonomy( $taxonomy );
 755  
 756      $default_args = array(
 757          'taxonomy'               => $taxonomy,
 758          'hide_empty'             => false,
 759          'update_term_meta_cache' => false,
 760      );
 761  
 762      $term_query = new WP_Term_Query();
 763  
 764      $args = array(
 765          'number' => 1,
 766          'slug'   => $slug,
 767      );
 768      $args = wp_parse_args( $args, $default_args );
 769  
 770      $terms_query = $term_query->query( $args );
 771  
 772      if ( empty( $terms_query ) ) {
 773          $template->title = sprintf(
 774              /* translators: Custom template title in the Site Editor, referencing a taxonomy term that was not found. 1: Taxonomy singular name, 2: Term slug. */
 775              __( 'Not found: %1$s (%2$s)' ),
 776              $taxonomy_object->labels->singular_name,
 777              $slug
 778          );
 779          return false;
 780      }
 781  
 782      $term_title = $terms_query[0]->name;
 783  
 784      $template->title = sprintf(
 785          /* translators: Custom template title in the Site Editor. 1: Taxonomy singular name, 2: Term title. */
 786          __( '%1$s: %2$s' ),
 787          $taxonomy_object->labels->singular_name,
 788          $term_title
 789      );
 790  
 791      $template->description = sprintf(
 792          /* translators: Custom template description in the Site Editor. %s: Term title. */
 793          __( 'Template for %s' ),
 794          $term_title
 795      );
 796  
 797      $term_query = new WP_Term_Query();
 798  
 799      $args = array(
 800          'number' => 2,
 801          'name'   => $term_title,
 802      );
 803      $args = wp_parse_args( $args, $default_args );
 804  
 805      $terms_with_same_title_query = $term_query->query( $args );
 806  
 807      if ( count( $terms_with_same_title_query ) > 1 ) {
 808          $template->title = sprintf(
 809              /* translators: Custom template title in the Site Editor. 1: Template title, 2: Term slug. */
 810              __( '%1$s (%2$s)' ),
 811              $template->title,
 812              $slug
 813          );
 814      }
 815  
 816      return true;
 817  }
 818  
 819  /**
 820   * Builds a block template object from a post object.
 821   *
 822   * This is a helper function that creates a block template object from a given post object.
 823   * It is self-sufficient in that it only uses information passed as arguments; it does not
 824   * query the database for additional information.
 825   *
 826   * @since 6.5.3
 827   * @access private
 828   *
 829   * @param WP_Post $post  Template post.
 830   * @param array   $terms Additional terms to inform the template object.
 831   * @param array   $meta  Additional meta fields to inform the template object.
 832   * @return WP_Block_Template|WP_Error Template or error object.
 833   */
 834  function _build_block_template_object_from_post_object( $post, $terms = array(), $meta = array() ) {
 835      if ( empty( $terms['wp_theme'] ) ) {
 836          return new WP_Error( 'template_missing_theme', __( 'No theme is defined for this template.' ) );
 837      }
 838      $theme = $terms['wp_theme'];
 839  
 840      $default_template_types = get_default_block_template_types();
 841  
 842      $template_file  = _get_block_template_file( $post->post_type, $post->post_name );
 843      $has_theme_file = get_stylesheet() === $theme && null !== $template_file;
 844  
 845      $template                 = new WP_Block_Template();
 846      $template->wp_id          = $post->ID;
 847      $template->id             = $theme . '//' . $post->post_name;
 848      $template->theme          = $theme;
 849      $template->content        = $post->post_content;
 850      $template->slug           = $post->post_name;
 851      $template->source         = 'custom';
 852      $template->origin         = ! empty( $meta['origin'] ) ? $meta['origin'] : null;
 853      $template->type           = $post->post_type;
 854      $template->description    = $post->post_excerpt;
 855      $template->title          = $post->post_title;
 856      $template->status         = $post->post_status;
 857      $template->has_theme_file = $has_theme_file;
 858      $template->is_custom      = empty( $meta['is_wp_suggestion'] );
 859      $template->author         = $post->post_author;
 860      $template->modified       = $post->post_modified;
 861  
 862      if ( 'wp_template' === $post->post_type && $has_theme_file && isset( $template_file['postTypes'] ) ) {
 863          $template->post_types = $template_file['postTypes'];
 864      }
 865  
 866      if ( 'wp_template' === $post->post_type && isset( $default_template_types[ $template->slug ] ) ) {
 867          $template->is_custom = false;
 868      }
 869  
 870      if ( 'wp_template_part' === $post->post_type && isset( $terms['wp_template_part_area'] ) ) {
 871          $template->area = $terms['wp_template_part_area'];
 872      }
 873  
 874      return $template;
 875  }
 876  
 877  /**
 878   * Builds a unified template object based a post Object.
 879   *
 880   * @since 5.9.0
 881   * @since 6.3.0 Added `modified` property to template objects.
 882   * @since 6.4.0 Added support for a revision post to be passed to this function.
 883   * @access private
 884   *
 885   * @param WP_Post $post Template post.
 886   * @return WP_Block_Template|WP_Error Template or error object.
 887   */
 888  function _build_block_template_result_from_post( $post ) {
 889      $post_id = wp_is_post_revision( $post );
 890      if ( ! $post_id ) {
 891          $post_id = $post;
 892      }
 893      $parent_post     = get_post( $post_id );
 894      $post->post_name = $parent_post->post_name;
 895      $post->post_type = $parent_post->post_type;
 896  
 897      $terms = get_the_terms( $parent_post, 'wp_theme' );
 898  
 899      if ( is_wp_error( $terms ) ) {
 900          return $terms;
 901      }
 902  
 903      if ( ! $terms ) {
 904          return new WP_Error( 'template_missing_theme', __( 'No theme is defined for this template.' ) );
 905      }
 906  
 907      $terms = array(
 908          'wp_theme' => $terms[0]->name,
 909      );
 910  
 911      if ( 'wp_template_part' === $parent_post->post_type ) {
 912          $type_terms = get_the_terms( $parent_post, 'wp_template_part_area' );
 913          if ( ! is_wp_error( $type_terms ) && false !== $type_terms ) {
 914              $terms['wp_template_part_area'] = $type_terms[0]->name;
 915          }
 916      }
 917  
 918      $meta = array(
 919          'origin'           => get_post_meta( $parent_post->ID, 'origin', true ),
 920          'is_wp_suggestion' => get_post_meta( $parent_post->ID, 'is_wp_suggestion', true ),
 921      );
 922  
 923      $template = _build_block_template_object_from_post_object( $post, $terms, $meta );
 924  
 925      if ( is_wp_error( $template ) ) {
 926          return $template;
 927      }
 928  
 929      // Check for a block template without a description and title or with a title equal to the slug.
 930      if ( 'wp_template' === $parent_post->post_type && empty( $template->description ) && ( empty( $template->title ) || $template->title === $template->slug ) ) {
 931          $matches = array();
 932  
 933          // Check for a block template for a single author, page, post, tag, category, custom post type, or custom taxonomy.
 934          if ( preg_match( '/(author|page|single|tag|category|taxonomy)-(.+)/', $template->slug, $matches ) ) {
 935              $type           = $matches[1];
 936              $slug_remaining = $matches[2];
 937  
 938              switch ( $type ) {
 939                  case 'author':
 940                      $nice_name = $slug_remaining;
 941                      $users     = get_users(
 942                          array(
 943                              'capability'     => 'edit_posts',
 944                              'search'         => $nice_name,
 945                              'search_columns' => array( 'user_nicename' ),
 946                              'fields'         => 'display_name',
 947                          )
 948                      );
 949  
 950                      if ( empty( $users ) ) {
 951                          $template->title = sprintf(
 952                              /* translators: Custom template title in the Site Editor, referencing a deleted author. %s: Author nicename. */
 953                              __( 'Deleted author: %s' ),
 954                              $nice_name
 955                          );
 956                      } else {
 957                          $author_name = $users[0];
 958  
 959                          $template->title = sprintf(
 960                              /* translators: Custom template title in the Site Editor. %s: Author name. */
 961                              __( 'Author: %s' ),
 962                              $author_name
 963                          );
 964  
 965                          $template->description = sprintf(
 966                              /* translators: Custom template description in the Site Editor. %s: Author name. */
 967                              __( 'Template for %s' ),
 968                              $author_name
 969                          );
 970  
 971                          $users_with_same_name = get_users(
 972                              array(
 973                                  'capability'     => 'edit_posts',
 974                                  'search'         => $author_name,
 975                                  'search_columns' => array( 'display_name' ),
 976                                  'fields'         => 'display_name',
 977                              )
 978                          );
 979  
 980                          if ( count( $users_with_same_name ) > 1 ) {
 981                              $template->title = sprintf(
 982                                  /* translators: Custom template title in the Site Editor. 1: Template title of an author template, 2: Author nicename. */
 983                                  __( '%1$s (%2$s)' ),
 984                                  $template->title,
 985                                  $nice_name
 986                              );
 987                          }
 988                      }
 989                      break;
 990                  case 'page':
 991                      _wp_build_title_and_description_for_single_post_type_block_template( 'page', $slug_remaining, $template );
 992                      break;
 993                  case 'single':
 994                      $post_types = get_post_types();
 995  
 996                      foreach ( $post_types as $post_type ) {
 997                          $post_type_length = strlen( $post_type ) + 1;
 998  
 999                          // If $slug_remaining starts with $post_type followed by a hyphen.
1000                          if ( 0 === strncmp( $slug_remaining, $post_type . '-', $post_type_length ) ) {
1001                              $slug  = substr( $slug_remaining, $post_type_length, strlen( $slug_remaining ) );
1002                              $found = _wp_build_title_and_description_for_single_post_type_block_template( $post_type, $slug, $template );
1003  
1004                              if ( $found ) {
1005                                  break;
1006                              }
1007                          }
1008                      }
1009                      break;
1010                  case 'tag':
1011                      _wp_build_title_and_description_for_taxonomy_block_template( 'post_tag', $slug_remaining, $template );
1012                      break;
1013                  case 'category':
1014                      _wp_build_title_and_description_for_taxonomy_block_template( 'category', $slug_remaining, $template );
1015                      break;
1016                  case 'taxonomy':
1017                      $taxonomies = get_taxonomies();
1018  
1019                      foreach ( $taxonomies as $taxonomy ) {
1020                          $taxonomy_length = strlen( $taxonomy ) + 1;
1021  
1022                          // If $slug_remaining starts with $taxonomy followed by a hyphen.
1023                          if ( 0 === strncmp( $slug_remaining, $taxonomy . '-', $taxonomy_length ) ) {
1024                              $slug  = substr( $slug_remaining, $taxonomy_length, strlen( $slug_remaining ) );
1025                              $found = _wp_build_title_and_description_for_taxonomy_block_template( $taxonomy, $slug, $template );
1026  
1027                              if ( $found ) {
1028                                  break;
1029                              }
1030                          }
1031                      }
1032                      break;
1033              }
1034          }
1035      }
1036  
1037      if ( 'wp_template' === $post->post_type ) {
1038          $registered_template = WP_Block_Templates_Registry::get_instance()->get_by_slug( $template->slug );
1039          if ( $registered_template ) {
1040              $template->plugin      = $registered_template->plugin;
1041              $template->origin      =
1042                  'theme' !== $template->origin && 'theme' !== $template->source ?
1043                  'plugin' :
1044                  $template->origin;
1045              $template->title       = empty( $template->title ) || $template->title === $template->slug ? $registered_template->title : $template->title;
1046              $template->description = empty( $template->description ) ? $registered_template->description : $template->description;
1047          }
1048      }
1049  
1050      if ( 'wp_template_part' === $template->type ) {
1051          $existing_ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true );
1052          $attributes                     = ! empty( $existing_ignored_hooked_blocks ) ? array( 'metadata' => array( 'ignoredHookedBlocks' => json_decode( $existing_ignored_hooked_blocks, true ) ) ) : array();
1053  
1054          /*
1055           * In order for hooked blocks to be inserted at positions first_child and last_child in a template part,
1056           * we need to wrap its content a mock template part block and traverse it.
1057           */
1058          $content           = get_comment_delimited_block_content(
1059              'core/template-part',
1060              $attributes,
1061              $template->content
1062          );
1063          $content           = apply_block_hooks_to_content(
1064              $content,
1065              $template,
1066              'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata'
1067          );
1068          $template->content = remove_serialized_parent_block( $content );
1069      } else {
1070          $template->content = apply_block_hooks_to_content(
1071              $template->content,
1072              $template,
1073              'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata'
1074          );
1075      }
1076  
1077      return $template;
1078  }
1079  
1080  /**
1081   * Retrieves a list of unified template objects based on a query.
1082   *
1083   * @since 5.8.0
1084   *
1085   * @param array  $query {
1086   *     Optional. Arguments to retrieve templates.
1087   *
1088   *     @type string[] $slug__in  List of slugs to include.
1089   *     @type int      $wp_id     Post ID of customized template.
1090   *     @type string   $area      A 'wp_template_part_area' taxonomy value to filter by (for 'wp_template_part' template type only).
1091   *     @type string   $post_type Post type to get the templates for.
1092   * }
1093   * @param string $template_type Template type. Either 'wp_template' or 'wp_template_part'.
1094   * @return WP_Block_Template[] Array of block templates.
1095   */
1096  function get_block_templates( $query = array(), $template_type = 'wp_template' ) {
1097      /**
1098       * Filters the block templates array before the query takes place.
1099       *
1100       * Return a non-null value to bypass the WordPress queries.
1101       *
1102       * @since 5.9.0
1103       *
1104       * @param WP_Block_Template[]|null $block_templates Return an array of block templates to short-circuit the default query,
1105       *                                                  or null to allow WP to run its normal queries.
1106       * @param array  $query {
1107       *     Arguments to retrieve templates. All arguments are optional.
1108       *
1109       *     @type string[] $slug__in  List of slugs to include.
1110       *     @type int      $wp_id     Post ID of customized template.
1111       *     @type string   $area      A 'wp_template_part_area' taxonomy value to filter by (for 'wp_template_part' template type only).
1112       *     @type string   $post_type Post type to get the templates for.
1113       * }
1114       * @param string $template_type Template type. Either 'wp_template' or 'wp_template_part'.
1115       */
1116      $templates = apply_filters( 'pre_get_block_templates', null, $query, $template_type );
1117      if ( ! is_null( $templates ) ) {
1118          return $templates;
1119      }
1120  
1121      $post_type     = isset( $query['post_type'] ) ? $query['post_type'] : '';
1122      $wp_query_args = array(
1123          'post_status'         => array( 'auto-draft', 'draft', 'publish' ),
1124          'post_type'           => $template_type,
1125          'posts_per_page'      => -1,
1126          'no_found_rows'       => true,
1127          'lazy_load_term_meta' => false,
1128          'tax_query'           => array(
1129              array(
1130                  'taxonomy' => 'wp_theme',
1131                  'field'    => 'name',
1132                  'terms'    => get_stylesheet(),
1133              ),
1134          ),
1135      );
1136  
1137      if ( 'wp_template_part' === $template_type && isset( $query['area'] ) ) {
1138          $wp_query_args['tax_query'][]           = array(
1139              'taxonomy' => 'wp_template_part_area',
1140              'field'    => 'name',
1141              'terms'    => $query['area'],
1142          );
1143          $wp_query_args['tax_query']['relation'] = 'AND';
1144      }
1145  
1146      if ( ! empty( $query['slug__in'] ) ) {
1147          $wp_query_args['post_name__in']  = $query['slug__in'];
1148          $wp_query_args['posts_per_page'] = count( array_unique( $query['slug__in'] ) );
1149      }
1150  
1151      // This is only needed for the regular templates/template parts post type listing and editor.
1152      if ( isset( $query['wp_id'] ) ) {
1153          $wp_query_args['p'] = $query['wp_id'];
1154      } else {
1155          $wp_query_args['post_status'] = 'publish';
1156      }
1157  
1158      $template_query = new WP_Query( $wp_query_args );
1159      $query_result   = array();
1160      foreach ( $template_query->posts as $post ) {
1161          $template = _build_block_template_result_from_post( $post );
1162  
1163          if ( is_wp_error( $template ) ) {
1164              continue;
1165          }
1166  
1167          if ( $post_type && ! $template->is_custom ) {
1168              continue;
1169          }
1170  
1171          if (
1172              $post_type &&
1173              isset( $template->post_types ) &&
1174              ! in_array( $post_type, $template->post_types, true )
1175          ) {
1176              continue;
1177          }
1178  
1179          $query_result[] = $template;
1180      }
1181  
1182      if ( ! isset( $query['wp_id'] ) ) {
1183          /*
1184           * If the query has found some user templates, those have priority
1185           * over the theme-provided ones, so we skip querying and building them.
1186           */
1187          $query['slug__not_in'] = wp_list_pluck( $query_result, 'slug' );
1188          $template_files        = _get_block_templates_files( $template_type, $query );
1189          foreach ( $template_files as $template_file ) {
1190              $query_result[] = _build_block_template_result_from_file( $template_file, $template_type );
1191          }
1192  
1193          if ( 'wp_template' === $template_type ) {
1194              // Add templates registered in the template registry. Filtering out the ones which have a theme file.
1195              $registered_templates          = WP_Block_Templates_Registry::get_instance()->get_by_query( $query );
1196              $matching_registered_templates = array_filter(
1197                  $registered_templates,
1198                  function ( $registered_template ) use ( $template_files ) {
1199                      foreach ( $template_files as $template_file ) {
1200                          if ( $template_file['slug'] === $registered_template->slug ) {
1201                              return false;
1202                          }
1203                      }
1204                      return true;
1205                  }
1206              );
1207              $query_result                  = array_merge( $query_result, $matching_registered_templates );
1208          }
1209      }
1210  
1211      /**
1212       * Filters the array of queried block templates array after they've been fetched.
1213       *
1214       * @since 5.9.0
1215       *
1216       * @param WP_Block_Template[] $query_result Array of found block templates.
1217       * @param array               $query {
1218       *     Arguments to retrieve templates. All arguments are optional.
1219       *
1220       *     @type string[] $slug__in  List of slugs to include.
1221       *     @type int      $wp_id     Post ID of customized template.
1222       *     @type string   $area      A 'wp_template_part_area' taxonomy value to filter by (for 'wp_template_part' template type only).
1223       *     @type string   $post_type Post type to get the templates for.
1224       * }
1225       * @param string              $template_type wp_template or wp_template_part.
1226       */
1227      return apply_filters( 'get_block_templates', $query_result, $query, $template_type );
1228  }
1229  
1230  /**
1231   * Retrieves a single unified template object using its id.
1232   *
1233   * @since 5.8.0
1234   *
1235   * @param string $id            Template unique identifier (example: 'theme_slug//template_slug').
1236   * @param string $template_type Optional. Template type. Either 'wp_template' or 'wp_template_part'.
1237   *                              Default 'wp_template'.
1238   * @return WP_Block_Template|null Template.
1239   */
1240  function get_block_template( $id, $template_type = 'wp_template' ) {
1241      /**
1242       * Filters the block template object before the query takes place.
1243       *
1244       * Return a non-null value to bypass the WordPress queries.
1245       *
1246       * @since 5.9.0
1247       *
1248       * @param WP_Block_Template|null $block_template Return block template object to short-circuit the default query,
1249       *                                               or null to allow WP to run its normal queries.
1250       * @param string                 $id             Template unique identifier (example: 'theme_slug//template_slug').
1251       * @param string                 $template_type  Template type. Either 'wp_template' or 'wp_template_part'.
1252       */
1253      $block_template = apply_filters( 'pre_get_block_template', null, $id, $template_type );
1254      if ( ! is_null( $block_template ) ) {
1255          return $block_template;
1256      }
1257  
1258      $parts = explode( '//', $id, 2 );
1259      if ( count( $parts ) < 2 ) {
1260          return null;
1261      }
1262      list( $theme, $slug ) = $parts;
1263      $wp_query_args        = array(
1264          'post_name__in'  => array( $slug ),
1265          'post_type'      => $template_type,
1266          'post_status'    => array( 'auto-draft', 'draft', 'publish', 'trash' ),
1267          'posts_per_page' => 1,
1268          'no_found_rows'  => true,
1269          'tax_query'      => array(
1270              array(
1271                  'taxonomy' => 'wp_theme',
1272                  'field'    => 'name',
1273                  'terms'    => $theme,
1274              ),
1275          ),
1276      );
1277      $template_query       = new WP_Query( $wp_query_args );
1278      $posts                = $template_query->posts;
1279  
1280      if ( count( $posts ) > 0 ) {
1281          $template = _build_block_template_result_from_post( $posts[0] );
1282  
1283          if ( ! is_wp_error( $template ) ) {
1284              return $template;
1285          }
1286      }
1287  
1288      $block_template = get_block_file_template( $id, $template_type );
1289  
1290      /**
1291       * Filters the queried block template object after it's been fetched.
1292       *
1293       * @since 5.9.0
1294       *
1295       * @param WP_Block_Template|null $block_template The found block template, or null if there isn't one.
1296       * @param string                 $id             Template unique identifier (example: 'theme_slug//template_slug').
1297       * @param string                 $template_type  Template type. Either 'wp_template' or 'wp_template_part'.
1298       */
1299      return apply_filters( 'get_block_template', $block_template, $id, $template_type );
1300  }
1301  
1302  /**
1303   * Retrieves a unified template object based on a theme file.
1304   *
1305   * This is a fallback of get_block_template(), used when no templates are found in the database.
1306   *
1307   * @since 5.9.0
1308   *
1309   * @param string $id            Template unique identifier (example: 'theme_slug//template_slug').
1310   * @param string $template_type Optional. Template type. Either 'wp_template' or 'wp_template_part'.
1311   *                              Default 'wp_template'.
1312   * @return WP_Block_Template|null The found block template, or null if there isn't one.
1313   */
1314  function get_block_file_template( $id, $template_type = 'wp_template' ) {
1315      /**
1316       * Filters the block template object before the theme file discovery takes place.
1317       *
1318       * Return a non-null value to bypass the WordPress theme file discovery.
1319       *
1320       * @since 5.9.0
1321       *
1322       * @param WP_Block_Template|null $block_template Return block template object to short-circuit the default query,
1323       *                                               or null to allow WP to run its normal queries.
1324       * @param string                 $id             Template unique identifier (example: 'theme_slug//template_slug').
1325       * @param string                 $template_type  Template type. Either 'wp_template' or 'wp_template_part'.
1326       */
1327      $block_template = apply_filters( 'pre_get_block_file_template', null, $id, $template_type );
1328      if ( ! is_null( $block_template ) ) {
1329          return $block_template;
1330      }
1331  
1332      $parts = explode( '//', $id, 2 );
1333      if ( count( $parts ) < 2 ) {
1334          /** This filter is documented in wp-includes/block-template-utils.php */
1335          return apply_filters( 'get_block_file_template', null, $id, $template_type );
1336      }
1337      list( $theme, $slug ) = $parts;
1338  
1339      if ( get_stylesheet() === $theme ) {
1340          $template_file = _get_block_template_file( $template_type, $slug );
1341          if ( null !== $template_file ) {
1342              $block_template = _build_block_template_result_from_file( $template_file, $template_type );
1343  
1344              /** This filter is documented in wp-includes/block-template-utils.php */
1345              return apply_filters( 'get_block_file_template', $block_template, $id, $template_type );
1346          }
1347      }
1348  
1349      $block_template = WP_Block_Templates_Registry::get_instance()->get_by_slug( $slug );
1350  
1351      /**
1352       * Filters the block template object after it has been (potentially) fetched from the theme file.
1353       *
1354       * @since 5.9.0
1355       *
1356       * @param WP_Block_Template|null $block_template The found block template, or null if there is none.
1357       * @param string                 $id             Template unique identifier (example: 'theme_slug//template_slug').
1358       * @param string                 $template_type  Template type. Either 'wp_template' or 'wp_template_part'.
1359       */
1360      return apply_filters( 'get_block_file_template', $block_template, $id, $template_type );
1361  }
1362  
1363  /**
1364   * Prints a block template part.
1365   *
1366   * @since 5.9.0
1367   *
1368   * @param string $part The block template part to print, for example 'header' or 'footer'.
1369   */
1370  function block_template_part( $part ) {
1371      $template_part = get_block_template( get_stylesheet() . '//' . $part, 'wp_template_part' );
1372      if ( ! $template_part || empty( $template_part->content ) ) {
1373          return;
1374      }
1375      echo do_blocks( $template_part->content );
1376  }
1377  
1378  /**
1379   * Prints the header block template part.
1380   *
1381   * @since 5.9.0
1382   */
1383  function block_header_area() {
1384      block_template_part( 'header' );
1385  }
1386  
1387  /**
1388   * Prints the footer block template part.
1389   *
1390   * @since 5.9.0
1391   */
1392  function block_footer_area() {
1393      block_template_part( 'footer' );
1394  }
1395  
1396  /**
1397   * Determines whether a theme directory should be ignored during export.
1398   *
1399   * @since 6.0.0
1400   *
1401   * @param string $path The path of the file in the theme.
1402   * @return bool Whether this file is in an ignored directory.
1403   */
1404  function wp_is_theme_directory_ignored( $path ) {
1405      $directories_to_ignore = array( '.DS_Store', '.svn', '.git', '.hg', '.bzr', 'node_modules', 'vendor' );
1406  
1407      foreach ( $directories_to_ignore as $directory ) {
1408          if ( str_starts_with( $path, $directory ) ) {
1409              return true;
1410          }
1411      }
1412  
1413      return false;
1414  }
1415  
1416  /**
1417   * Creates an export of the current templates and
1418   * template parts from the site editor at the
1419   * specified path in a ZIP file.
1420   *
1421   * @since 5.9.0
1422   * @since 6.0.0 Adds the whole theme to the export archive.
1423   *
1424   * @return WP_Error|string Path of the ZIP file or error on failure.
1425   */
1426  function wp_generate_block_templates_export_file() {
1427      $wp_version = wp_get_wp_version();
1428  
1429      if ( ! class_exists( 'ZipArchive' ) ) {
1430          return new WP_Error( 'missing_zip_package', __( 'Zip Export not supported.' ) );
1431      }
1432  
1433      $obscura    = wp_generate_password( 12, false, false );
1434      $theme_name = basename( get_stylesheet() );
1435      $filename   = get_temp_dir() . $theme_name . $obscura . '.zip';
1436  
1437      $zip = new ZipArchive();
1438      if ( true !== $zip->open( $filename, ZipArchive::CREATE | ZipArchive::OVERWRITE ) ) {
1439          return new WP_Error( 'unable_to_create_zip', __( 'Unable to open export file (archive) for writing.' ) );
1440      }
1441  
1442      $zip->addEmptyDir( 'templates' );
1443      $zip->addEmptyDir( 'parts' );
1444  
1445      // Get path of the theme.
1446      $theme_path = wp_normalize_path( get_stylesheet_directory() );
1447  
1448      // Create recursive directory iterator.
1449      $theme_files = new RecursiveIteratorIterator(
1450          new RecursiveDirectoryIterator( $theme_path ),
1451          RecursiveIteratorIterator::LEAVES_ONLY
1452      );
1453  
1454      // Make a copy of the current theme.
1455      foreach ( $theme_files as $file ) {
1456          // Skip directories as they are added automatically.
1457          if ( ! $file->isDir() ) {
1458              // Get real and relative path for current file.
1459              $file_path     = wp_normalize_path( $file );
1460              $relative_path = substr( $file_path, strlen( $theme_path ) + 1 );
1461  
1462              if ( ! wp_is_theme_directory_ignored( $relative_path ) ) {
1463                  $zip->addFile( $file_path, $relative_path );
1464              }
1465          }
1466      }
1467  
1468      // Load templates into the zip file.
1469      $templates = get_block_templates();
1470      foreach ( $templates as $template ) {
1471          $template->content = traverse_and_serialize_blocks(
1472              parse_blocks( $template->content ),
1473              '_remove_theme_attribute_from_template_part_block'
1474          );
1475  
1476          $zip->addFromString(
1477              'templates/' . $template->slug . '.html',
1478              $template->content
1479          );
1480      }
1481  
1482      // Load template parts into the zip file.
1483      $template_parts = get_block_templates( array(), 'wp_template_part' );
1484      foreach ( $template_parts as $template_part ) {
1485          $zip->addFromString(
1486              'parts/' . $template_part->slug . '.html',
1487              $template_part->content
1488          );
1489      }
1490  
1491      // Load theme.json into the zip file.
1492      $tree = WP_Theme_JSON_Resolver::get_theme_data( array(), array( 'with_supports' => false ) );
1493      // Merge with user data.
1494      $tree->merge( WP_Theme_JSON_Resolver::get_user_data() );
1495  
1496      $theme_json_raw = $tree->get_data();
1497      // If a version is defined, add a schema.
1498      if ( $theme_json_raw['version'] ) {
1499          $theme_json_version = 'wp/' . substr( $wp_version, 0, 3 );
1500          $schema             = array( '$schema' => 'https://schemas.wp.org/' . $theme_json_version . '/theme.json' );
1501          $theme_json_raw     = array_merge( $schema, $theme_json_raw );
1502      }
1503  
1504      // Convert to a string.
1505      $theme_json_encoded = wp_json_encode( $theme_json_raw, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE );
1506  
1507      // Replace 4 spaces with a tab.
1508      $theme_json_tabbed = preg_replace( '~(?:^|\G)\h{4}~m', "\t", $theme_json_encoded );
1509  
1510      // Add the theme.json file to the zip.
1511      $zip->addFromString(
1512          'theme.json',
1513          $theme_json_tabbed
1514      );
1515  
1516      // Save changes to the zip file.
1517      $zip->close();
1518  
1519      return $filename;
1520  }
1521  
1522  /**
1523   * Gets the template hierarchy for the given template slug to be created.
1524   *
1525   * Note: Always add `index` as the last fallback template.
1526   *
1527   * @since 6.1.0
1528   *
1529   * @param string $slug            The template slug to be created.
1530   * @param bool   $is_custom       Optional. Indicates if a template is custom or
1531   *                                part of the template hierarchy. Default false.
1532   * @param string $template_prefix Optional. The template prefix for the created template.
1533   *                                Used to extract the main template type, e.g.
1534   *                                in `taxonomy-books` the `taxonomy` is extracted.
1535   *                                Default empty string.
1536   * @return string[] The template hierarchy.
1537   */
1538  function get_template_hierarchy( $slug, $is_custom = false, $template_prefix = '' ) {
1539      if ( 'index' === $slug ) {
1540          /** This filter is documented in wp-includes/template.php */
1541          return apply_filters( 'index_template_hierarchy', array( 'index' ) );
1542      }
1543      if ( $is_custom ) {
1544          /** This filter is documented in wp-includes/template.php */
1545          return apply_filters( 'page_template_hierarchy', array( 'page', 'singular', 'index' ) );
1546      }
1547      if ( 'front-page' === $slug ) {
1548          /** This filter is documented in wp-includes/template.php */
1549          return apply_filters( 'frontpage_template_hierarchy', array( 'front-page', 'home', 'index' ) );
1550      }
1551  
1552      $matches = array();
1553  
1554      $template_hierarchy = array( $slug );
1555      // Most default templates don't have `$template_prefix` assigned.
1556      if ( ! empty( $template_prefix ) ) {
1557          list( $type ) = explode( '-', $template_prefix );
1558          // We need these checks because we always add the `$slug` above.
1559          if ( ! in_array( $template_prefix, array( $slug, $type ), true ) ) {
1560              $template_hierarchy[] = $template_prefix;
1561          }
1562          if ( $slug !== $type ) {
1563              $template_hierarchy[] = $type;
1564          }
1565      } elseif ( preg_match( '/^(author|category|archive|tag|page)-.+$/', $slug, $matches ) ) {
1566          $template_hierarchy[] = $matches[1];
1567      } elseif ( preg_match( '/^(taxonomy|single)-(.+)$/', $slug, $matches ) ) {
1568          $type           = $matches[1];
1569          $slug_remaining = $matches[2];
1570  
1571          $items = 'single' === $type ? get_post_types() : get_taxonomies();
1572          foreach ( $items as $item ) {
1573              if ( ! str_starts_with( $slug_remaining, $item ) ) {
1574                      continue;
1575              }
1576  
1577              // If $slug_remaining is equal to $post_type or $taxonomy we have
1578              // the single-$post_type template or the taxonomy-$taxonomy template.
1579              if ( $slug_remaining === $item ) {
1580                  $template_hierarchy[] = $type;
1581                  break;
1582              }
1583  
1584              // If $slug_remaining is single-$post_type-$slug template.
1585              if ( strlen( $slug_remaining ) > strlen( $item ) + 1 ) {
1586                  $template_hierarchy[] = "$type-$item";
1587                  $template_hierarchy[] = $type;
1588                  break;
1589              }
1590          }
1591      }
1592      // Handle `archive` template.
1593      if (
1594          str_starts_with( $slug, 'author' ) ||
1595          str_starts_with( $slug, 'taxonomy' ) ||
1596          str_starts_with( $slug, 'category' ) ||
1597          str_starts_with( $slug, 'tag' ) ||
1598          'date' === $slug
1599      ) {
1600          $template_hierarchy[] = 'archive';
1601      }
1602      // Handle `single` template.
1603      if ( 'attachment' === $slug ) {
1604          $template_hierarchy[] = 'single';
1605      }
1606      // Handle `singular` template.
1607      if (
1608          str_starts_with( $slug, 'single' ) ||
1609          str_starts_with( $slug, 'page' ) ||
1610          'attachment' === $slug
1611      ) {
1612          $template_hierarchy[] = 'singular';
1613      }
1614      $template_hierarchy[] = 'index';
1615  
1616      $template_type = '';
1617      if ( ! empty( $template_prefix ) ) {
1618          list( $template_type ) = explode( '-', $template_prefix );
1619      } else {
1620          list( $template_type ) = explode( '-', $slug );
1621      }
1622      $valid_template_types = array( '404', 'archive', 'attachment', 'author', 'category', 'date', 'embed', 'frontpage', 'home', 'index', 'page', 'paged', 'privacypolicy', 'search', 'single', 'singular', 'tag', 'taxonomy' );
1623      if ( in_array( $template_type, $valid_template_types, true ) ) {
1624          /** This filter is documented in wp-includes/template.php */
1625          return apply_filters( "{$template_type}_template_hierarchy", $template_hierarchy );
1626      }
1627      return $template_hierarchy;
1628  }
1629  
1630  /**
1631   * Inject ignoredHookedBlocks metadata attributes into a template or template part.
1632   *
1633   * Given an object that represents a `wp_template` or `wp_template_part` post object
1634   * prepared for inserting or updating the database, locate all blocks that have
1635   * hooked blocks, and inject a `metadata.ignoredHookedBlocks` attribute into the anchor
1636   * blocks to reflect the latter.
1637   *
1638   * @since 6.5.0
1639   * @access private
1640   *
1641   * @param stdClass        $changes    An object representing a template or template part
1642   *                                    prepared for inserting or updating the database.
1643   * @param WP_REST_Request $deprecated Deprecated. Not used.
1644   * @return stdClass|WP_Error The updated object representing a template or template part.
1645   */
1646  function inject_ignored_hooked_blocks_metadata_attributes( $changes, $deprecated = null ) {
1647      if ( null !== $deprecated ) {
1648          _deprecated_argument( __FUNCTION__, '6.5.3' );
1649      }
1650  
1651      if ( ! isset( $changes->post_content ) ) {
1652          return $changes;
1653      }
1654  
1655      $hooked_blocks = get_hooked_blocks();
1656      if ( empty( $hooked_blocks ) && ! has_filter( 'hooked_block_types' ) ) {
1657          return $changes;
1658      }
1659  
1660      $meta  = isset( $changes->meta_input ) ? $changes->meta_input : array();
1661      $terms = isset( $changes->tax_input ) ? $changes->tax_input : array();
1662  
1663      if ( empty( $changes->ID ) ) {
1664          // There's no post object for this template in the database for this template yet.
1665          $post = $changes;
1666      } else {
1667          // Find the existing post object.
1668          $post = get_post( $changes->ID );
1669  
1670          // If the post is a revision, use the parent post's post_name and post_type.
1671          $post_id = wp_is_post_revision( $post );
1672          if ( $post_id ) {
1673              $parent_post     = get_post( $post_id );
1674              $post->post_name = $parent_post->post_name;
1675              $post->post_type = $parent_post->post_type;
1676          }
1677  
1678          // Apply the changes to the existing post object.
1679          $post = (object) array_merge( (array) $post, (array) $changes );
1680  
1681          $type_terms        = get_the_terms( $changes->ID, 'wp_theme' );
1682          $terms['wp_theme'] = ! is_wp_error( $type_terms ) && ! empty( $type_terms ) ? $type_terms[0]->name : null;
1683      }
1684  
1685      // Required for the WP_Block_Template. Update the post object with the current time.
1686      $post->post_modified = current_time( 'mysql' );
1687  
1688      // If the post_author is empty, set it to the current user.
1689      if ( empty( $post->post_author ) ) {
1690          $post->post_author = get_current_user_id();
1691      }
1692  
1693      if ( 'wp_template_part' === $post->post_type && ! isset( $terms['wp_template_part_area'] ) ) {
1694          $area_terms                     = get_the_terms( $changes->ID, 'wp_template_part_area' );
1695          $terms['wp_template_part_area'] = ! is_wp_error( $area_terms ) && ! empty( $area_terms ) ? $area_terms[0]->name : null;
1696      }
1697  
1698      $template = _build_block_template_object_from_post_object( new WP_Post( $post ), $terms, $meta );
1699  
1700      if ( is_wp_error( $template ) ) {
1701          return $template;
1702      }
1703  
1704      if ( 'wp_template_part' === $post->post_type ) {
1705          $attributes                     = array();
1706          $existing_ignored_hooked_blocks = isset( $post->ID ) ? get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true ) : '';
1707  
1708          if ( ! empty( $existing_ignored_hooked_blocks ) ) {
1709              $attributes['metadata'] = array(
1710                  'ignoredHookedBlocks' => json_decode( $existing_ignored_hooked_blocks, true ),
1711              );
1712          }
1713  
1714          $content               = get_comment_delimited_block_content(
1715              'core/template-part',
1716              $attributes,
1717              $changes->post_content
1718          );
1719          $content               = apply_block_hooks_to_content( $content, $template, 'set_ignored_hooked_blocks_metadata' );
1720          $changes->post_content = remove_serialized_parent_block( $content );
1721  
1722          $wrapper_block_markup  = extract_serialized_parent_block( $content );
1723          $wrapper_block         = parse_blocks( $wrapper_block_markup )[0];
1724          $ignored_hooked_blocks = $wrapper_block['attrs']['metadata']['ignoredHookedBlocks'] ?? array();
1725          if ( ! empty( $ignored_hooked_blocks ) ) {
1726              if ( ! isset( $changes->meta_input ) ) {
1727                  $changes->meta_input = array();
1728              }
1729              $changes->meta_input['_wp_ignored_hooked_blocks'] = wp_json_encode( $ignored_hooked_blocks );
1730          }
1731      } else {
1732          $changes->post_content = apply_block_hooks_to_content( $changes->post_content, $template, 'set_ignored_hooked_blocks_metadata' );
1733      }
1734  
1735      return $changes;
1736  }


Generated : Fri Feb 21 08:20:01 2025 Cross-referenced by PHPXref