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Editing: class-wp-theme-json-schema.php
<?php /** * WP_Theme_JSON_Schema class * * @package WordPress * @subpackage Theme * @since 5.9.0 */ /** * Class that migrates a given theme.json structure to the latest schema. * * This class is for internal core usage and is not supposed to be used by extenders (plugins and/or themes). * This is a low-level API that may need to do breaking changes. Please, * use get_global_settings, get_global_styles, and get_global_stylesheet instead. * * @since 5.9.0 * @access private */ #[AllowDynamicProperties] class WP_Theme_JSON_Schema { /** * Maps old properties to their new location within the schema's settings. * This will be applied at both the defaults and individual block levels. */ const V1_TO_V2_RENAMED_PATHS = array( 'border.customRadius' => 'border.radius', 'spacing.customMargin' => 'spacing.margin', 'spacing.customPadding' => 'spacing.padding', 'typography.customLineHeight' => 'typography.lineHeight', ); /** * Function that migrates a given theme.json structure to the last version. * * @since 5.9.0 * @since 6.6.0 Migrate up to v3 and add $origin parameter. * * @param array $theme_json The structure to migrate. * @param string $origin Optional. What source of data this object represents. * One of 'blocks', 'default', 'theme', or 'custom'. Default 'theme'. * @return array The structure in the last version. */ public static function migrate( $theme_json, $origin = 'theme' ) { if ( ! isset( $theme_json['version'] ) ) { $theme_json = array( 'version' => WP_Theme_JSON::LATEST_SCHEMA, ); } // Migrate each version in order starting with the current version. switch ( $theme_json['version'] ) { case 1: $theme_json = self::migrate_v1_to_v2( $theme_json ); // Deliberate fall through. Once migrated to v2, also migrate to v3. case 2: $theme_json = self::migrate_v2_to_v3( $theme_json, $origin ); } return $theme_json; } /** * Removes the custom prefixes for a few properties * that were part of v1: * * 'border.customRadius' => 'border.radius', * 'spacing.customMargin' => 'spacing.margin', * 'spacing.customPadding' => 'spacing.padding', * 'typography.customLineHeight' => 'typography.lineHeight', * * @since 5.9.0 * * @param array $old Data to migrate. * * @return array Data without the custom prefixes. */ private static function migrate_v1_to_v2( $old ) { // Copy everything. $new = $old; // Overwrite the things that changed. if ( isset( $old['settings'] ) ) { $new['settings'] = self::rename_paths( $old['settings'], self::V1_TO_V2_RENAMED_PATHS ); } // Set the new version. $new['version'] = 2; return $new; } /** * Migrates from v2 to v3. * * - Sets settings.typography.defaultFontSizes to false if settings.typography.fontSizes are defined. * - Sets settings.spacing.defaultSpacingSizes to false if settings.spacing.spacingSizes are defined. * - Prevents settings.spacing.spacingSizes from merging with settings.spacing.spacingScale by * unsetting spacingScale when spacingSizes are defined. * * @since 6.6.0 * * @param array $old Data to migrate. * @param string $origin What source of data this object represents. * One of 'blocks', 'default', 'theme', or 'custom'. * @return array Data with defaultFontSizes set to false. */ private static function migrate_v2_to_v3( $old, $origin ) { // Copy everything. $new = $old; // Set the new version. $new['version'] = 3; /* * Remaining changes do not need to be applied to the custom origin, * as they should take on the value of the theme origin. */ if ( 'custom' === $origin ) { return $new; } /* * Even though defaultFontSizes and defaultSpacingSizes are new * settings, we need to migrate them as they each control * PRESETS_METADATA prevent_override values which were previously * hardcoded to false. This only needs to happen when the theme provides * fontSizes or spacingSizes as they could match the default ones and * affect the generated CSS. */ if ( isset( $old['settings']['typography']['fontSizes'] ) ) { $new['settings']['typography']['defaultFontSizes'] = false; } /* * Similarly to defaultFontSizes, we need to migrate defaultSpacingSizes * as it controls the PRESETS_METADATA prevent_override which was * previously hardcoded to false. This only needs to happen when the * theme provided spacing sizes via spacingSizes or spacingScale. */ if ( isset( $old['settings']['spacing']['spacingSizes'] ) || isset( $old['settings']['spacing']['spacingScale'] ) ) { $new['settings']['spacing']['defaultSpacingSizes'] = false; } /* * In v3 spacingSizes is merged with the generated spacingScale sizes * instead of completely replacing them. The v3 behavior is what was * documented for the v2 schema, but the code never actually did work * that way. Instead of surprising users with a behavior change two * years after the fact at the same time as a v3 update is introduced, * we'll continue using the "bugged" behavior for v2 themes. And treat * the "bug fix" as a breaking change for v3. */ if ( isset( $old['settings']['spacing']['spacingSizes'] ) ) { unset( $new['settings']['spacing']['spacingScale'] ); } return $new; } /** * Processes the settings subtree. * * @since 5.9.0 * * @param array $settings Array to process. * @param array $paths_to_rename Paths to rename. * * @return array The settings in the new format. */ private static function rename_paths( $settings, $paths_to_rename ) { $new_settings = $settings; // Process any renamed/moved paths within default settings. self::rename_settings( $new_settings, $paths_to_rename ); // Process individual block settings. if ( isset( $new_settings['blocks'] ) && is_array( $new_settings['blocks'] ) ) { foreach ( $new_settings['blocks'] as &$block_settings ) { self::rename_settings( $block_settings, $paths_to_rename ); } } return $new_settings; } /** * Processes a settings array, renaming or moving properties. * * @since 5.9.0 * * @param array $settings Reference to settings either defaults or an individual block's. * @param array $paths_to_rename Paths to rename. */ private static function rename_settings( &$settings, $paths_to_rename ) { foreach ( $paths_to_rename as $original => $renamed ) { $original_path = explode( '.', $original ); $renamed_path = explode( '.', $renamed ); $current_value = _wp_array_get( $settings, $original_path, null ); if ( null !== $current_value ) { _wp_array_set( $settings, $renamed_path, $current_value ); self::unset_setting_by_path( $settings, $original_path ); } } } /** * Removes a property from within the provided settings by its path. * * @since 5.9.0 * * @param array $settings Reference to the current settings array. * @param array $path Path to the property to be removed. */ private static function unset_setting_by_path( &$settings, $path ) { $tmp_settings = &$settings; $last_key = array_pop( $path ); foreach ( $path as $key ) { $tmp_settings = &$tmp_settings[ $key ]; } unset( $tmp_settings[ $last_key ] ); } }
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