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/wp-includes/ -> class-wp-theme-json-schema.php (source)

   1  <?php
   2  /**
   3   * WP_Theme_JSON_Schema class
   4   *
   5   * @package WordPress
   6   * @subpackage Theme
   7   * @since 5.9.0
   8   */
   9  
  10  /**
  11   * Class that migrates a given theme.json structure to the latest schema.
  12   *
  13   * This class is for internal core usage and is not supposed to be used by extenders (plugins and/or themes).
  14   * This is a low-level API that may need to do breaking changes. Please,
  15   * use get_global_settings, get_global_styles, and get_global_stylesheet instead.
  16   *
  17   * @since 5.9.0
  18   * @access private
  19   */
  20  class WP_Theme_JSON_Schema {
  21  
  22      /**
  23       * Maps old properties to their new location within the schema's settings.
  24       * This will be applied at both the defaults and individual block levels.
  25       */
  26      const V1_TO_V2_RENAMED_PATHS = array(
  27          'border.customRadius'         => 'border.radius',
  28          'spacing.customMargin'        => 'spacing.margin',
  29          'spacing.customPadding'       => 'spacing.padding',
  30          'typography.customLineHeight' => 'typography.lineHeight',
  31      );
  32  
  33      /**
  34       * Function that migrates a given theme.json structure to the last version.
  35       *
  36       * @since 5.9.0
  37       *
  38       * @param array $theme_json The structure to migrate.
  39       *
  40       * @return array The structure in the last version.
  41       */
  42  	public static function migrate( $theme_json ) {
  43          if ( ! isset( $theme_json['version'] ) ) {
  44              $theme_json = array(
  45                  'version' => WP_Theme_JSON::LATEST_SCHEMA,
  46              );
  47          }
  48  
  49          if ( 1 === $theme_json['version'] ) {
  50              $theme_json = self::migrate_v1_to_v2( $theme_json );
  51          }
  52  
  53          return $theme_json;
  54      }
  55  
  56      /**
  57       * Removes the custom prefixes for a few properties
  58       * that were part of v1:
  59       *
  60       * 'border.customRadius'         => 'border.radius',
  61       * 'spacing.customMargin'        => 'spacing.margin',
  62       * 'spacing.customPadding'       => 'spacing.padding',
  63       * 'typography.customLineHeight' => 'typography.lineHeight',
  64       *
  65       * @since 5.9.0
  66       *
  67       * @param array $old Data to migrate.
  68       *
  69       * @return array Data without the custom prefixes.
  70       */
  71  	private static function migrate_v1_to_v2( $old ) {
  72          // Copy everything.
  73          $new = $old;
  74  
  75          // Overwrite the things that changed.
  76          if ( isset( $old['settings'] ) ) {
  77              $new['settings'] = self::rename_paths( $old['settings'], self::V1_TO_V2_RENAMED_PATHS );
  78          }
  79  
  80          // Set the new version.
  81          $new['version'] = 2;
  82  
  83          return $new;
  84      }
  85  
  86      /**
  87       * Processes the settings subtree.
  88       *
  89       * @since 5.9.0
  90       *
  91       * @param array $settings        Array to process.
  92       * @param array $paths_to_rename Paths to rename.
  93       *
  94       * @return array The settings in the new format.
  95       */
  96  	private static function rename_paths( $settings, $paths_to_rename ) {
  97          $new_settings = $settings;
  98  
  99          // Process any renamed/moved paths within default settings.
 100          self::rename_settings( $new_settings, $paths_to_rename );
 101  
 102          // Process individual block settings.
 103          if ( isset( $new_settings['blocks'] ) && is_array( $new_settings['blocks'] ) ) {
 104              foreach ( $new_settings['blocks'] as &$block_settings ) {
 105                  self::rename_settings( $block_settings, $paths_to_rename );
 106              }
 107          }
 108  
 109          return $new_settings;
 110      }
 111  
 112      /**
 113       * Processes a settings array, renaming or moving properties.
 114       *
 115       * @since 5.9.0
 116       *
 117       * @param array $settings        Reference to settings either defaults or an individual block's.
 118       * @param array $paths_to_rename Paths to rename.
 119       */
 120  	private static function rename_settings( &$settings, $paths_to_rename ) {
 121          foreach ( $paths_to_rename as $original => $renamed ) {
 122              $original_path = explode( '.', $original );
 123              $renamed_path  = explode( '.', $renamed );
 124              $current_value = _wp_array_get( $settings, $original_path, null );
 125  
 126              if ( null !== $current_value ) {
 127                  _wp_array_set( $settings, $renamed_path, $current_value );
 128                  self::unset_setting_by_path( $settings, $original_path );
 129              }
 130          }
 131      }
 132  
 133      /**
 134       * Removes a property from within the provided settings by its path.
 135       *
 136       * @since 5.9.0
 137       *
 138       * @param array $settings Reference to the current settings array.
 139       * @param array $path Path to the property to be removed.
 140       *
 141       * @return void
 142       */
 143  	private static function unset_setting_by_path( &$settings, $path ) {
 144          $tmp_settings = &$settings; // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
 145          $last_key     = array_pop( $path );
 146          foreach ( $path as $key ) {
 147              $tmp_settings = &$tmp_settings[ $key ];
 148          }
 149  
 150          unset( $tmp_settings[ $last_key ] );
 151      }
 152  }


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