<?php
/**
* Functions related to registering and parsing blocks.
*
* @package WordPress
* @subpackage Blocks
* @since 5.0.0
*/
/**
* Removes the block asset's path prefix if provided.
*
* @since 5.5.0
*
* @param string $asset_handle_or_path Asset handle or prefixed path.
* @return string Path without the prefix or the original value.
*/
function remove_block_asset_path_prefix( $asset_handle_or_path ) {
$path_prefix = 'file:';
if ( ! str_starts_with( $asset_handle_or_path, $path_prefix ) ) {
return $asset_handle_or_path;
}
$path = substr(
$asset_handle_or_path,
strlen( $path_prefix )
);
if ( str_starts_with( $path, './' ) ) {
$path = substr( $path, 2 );
}
return $path;
}
/**
* Generates the name for an asset based on the name of the block
* and the field name provided.
*
* @since 5.5.0
* @since 6.1.0 Added `$index` parameter.
* @since 6.5.0 Added support for `viewScriptModule` field.
*
* @param string $block_name Name of the block.
* @param string $field_name Name of the metadata field.
* @param int $index Optional. Index of the asset when multiple items passed.
* Default 0.
* @return string Generated asset name for the block's field.
*/
function generate_block_asset_handle( $block_name, $field_name, $index = 0 ) {
if ( str_starts_with( $block_name, 'core/' ) ) {
$asset_handle = str_replace( 'core/', 'wp-block-', $block_name );
if ( str_starts_with( $field_name, 'editor' ) ) {
$asset_handle .= '-editor';
}
if ( str_starts_with( $field_name, 'view' ) ) {
$asset_handle .= '-view';
}
if ( str_ends_with( strtolower( $field_name ), 'scriptmodule' ) ) {
$asset_handle .= '-script-module';
}
if ( $index > 0 ) {
$asset_handle .= '-' . ( $index + 1 );
}
return $asset_handle;
}
$field_mappings = array(
'editorScript' => 'editor-script',
'editorStyle' => 'editor-style',
'script' => 'script',
'style' => 'style',
'viewScript' => 'view-script',
'viewScriptModule' => 'view-script-module',
'viewStyle' => 'view-style',
);
$asset_handle = str_replace( '/', '-', $block_name ) .
'-' . $field_mappings[ $field_name ];
if ( $index > 0 ) {
$asset_handle .= '-' . ( $index + 1 );
}
return $asset_handle;
}
/**
* Gets the URL to a block asset.
*
* @since 6.4.0
*
* @param string $path A normalized path to a block asset.
* @return string|false The URL to the block asset or false on failure.
*/
function get_block_asset_url( $path ) {
if ( empty( $path ) ) {
return false;
}
// Path needs to be normalized to work in Windows env.
static $wpinc_path_norm = '';
if ( ! $wpinc_path_norm ) {
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
}
if ( str_starts_with( $path, $wpinc_path_norm ) ) {
return includes_url( str_replace( $wpinc_path_norm, '', $path ) );
}
static $template_paths_norm = array();
$template = get_template();
if ( ! isset( $template_paths_norm[ $template ] ) ) {
$template_paths_norm[ $template ] = wp_normalize_path( realpath( get_template_directory() ) );
}
if ( str_starts_with( $path, trailingslashit( $template_paths_norm[ $template ] ) ) ) {
return get_theme_file_uri( str_replace( $template_paths_norm[ $template ], '', $path ) );
}
if ( is_child_theme() ) {
$stylesheet = get_stylesheet();
if ( ! isset( $template_paths_norm[ $stylesheet ] ) ) {
$template_paths_norm[ $stylesheet ] = wp_normalize_path( realpath( get_stylesheet_directory() ) );
}
if ( str_starts_with( $path, trailingslashit( $template_paths_norm[ $stylesheet ] ) ) ) {
return get_theme_file_uri( str_replace( $template_paths_norm[ $stylesheet ], '', $path ) );
}
}
return plugins_url( basename( $path ), $path );
}
/**
* Finds a script module ID for the selected block metadata field. It detects
* when a path to file was provided and optionally finds a corresponding asset
* file with details necessary to register the script module under with an
* automatically generated module ID. It returns unprocessed script module
* ID otherwise.
*
* @since 6.5.0
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @param int $index Optional. Index of the script module ID to register when multiple
* items passed. Default 0.
* @return string|false Script module ID or false on failure.
*/
function register_block_script_module_id( $metadata, $field_name, $index = 0 ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$module_id = $metadata[ $field_name ];
if ( is_array( $module_id ) ) {
if ( empty( $module_id[ $index ] ) ) {
return false;
}
$module_id = $module_id[ $index ];
}
$module_path = remove_block_asset_path_prefix( $module_id );
if ( $module_id === $module_path ) {
return $module_id;
}
$path = dirname( $metadata['file'] );
$module_asset_raw_path = $path . '/' . substr_replace( $module_path, '.asset.php', - strlen( '.js' ) );
$module_id = generate_block_asset_handle( $metadata['name'], $field_name, $index );
$module_asset_path = wp_normalize_path(
realpath( $module_asset_raw_path )
);
$module_path_norm = wp_normalize_path( realpath( $path . '/' . $module_path ) );
$module_uri = get_block_asset_url( $module_path_norm );
$module_asset = ! empty( $module_asset_path ) ? require $module_asset_path : array();
$module_dependencies = isset( $module_asset['dependencies'] ) ? $module_asset['dependencies'] : array();
$block_version = isset( $metadata['version'] ) ? $metadata['version'] : false;
$module_version = isset( $module_asset['version'] ) ? $module_asset['version'] : $block_version;
wp_register_script_module(
$module_id,
$module_uri,
$module_dependencies,
$module_version
);
return $module_id;
}
/**
* Finds a script handle for the selected block metadata field. It detects
* when a path to file was provided and optionally finds a corresponding asset
* file with details necessary to register the script under automatically
* generated handle name. It returns unprocessed script handle otherwise.
*
* @since 5.5.0
* @since 6.1.0 Added `$index` parameter.
* @since 6.5.0 The asset file is optional. Added script handle support in the asset file.
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @param int $index Optional. Index of the script to register when multiple items passed.
* Default 0.
* @return string|false Script handle provided directly or created through
* script's registration, or false on failure.
*/
function register_block_script_handle( $metadata, $field_name, $index = 0 ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$script_handle_or_path = $metadata[ $field_name ];
if ( is_array( $script_handle_or_path ) ) {
if ( empty( $script_handle_or_path[ $index ] ) ) {
return false;
}
$script_handle_or_path = $script_handle_or_path[ $index ];
}
$script_path = remove_block_asset_path_prefix( $script_handle_or_path );
if ( $script_handle_or_path === $script_path ) {
return $script_handle_or_path;
}
$path = dirname( $metadata['file'] );
$script_asset_raw_path = $path . '/' . substr_replace( $script_path, '.asset.php', - strlen( '.js' ) );
$script_asset_path = wp_normalize_path(
realpath( $script_asset_raw_path )
);
// Asset file for blocks is optional. See https://core.trac.wordpress.org/ticket/60460.
$script_asset = ! empty( $script_asset_path ) ? require $script_asset_path : array();
$script_handle = isset( $script_asset['handle'] ) ?
$script_asset['handle'] :
generate_block_asset_handle( $metadata['name'], $field_name, $index );
if ( wp_script_is( $script_handle, 'registered' ) ) {
return $script_handle;
}
$script_path_norm = wp_normalize_path( realpath( $path . '/' . $script_path ) );
$script_uri = get_block_asset_url( $script_path_norm );
$script_dependencies = isset( $script_asset['dependencies'] ) ? $script_asset['dependencies'] : array();
$block_version = isset( $metadata['version'] ) ? $metadata['version'] : false;
$script_version = isset( $script_asset['version'] ) ? $script_asset['version'] : $block_version;
$script_args = array();
if ( 'viewScript' === $field_name && $script_uri ) {
$script_args['strategy'] = 'defer';
}
$result = wp_register_script(
$script_handle,
$script_uri,
$script_dependencies,
$script_version,
$script_args
);
if ( ! $result ) {
return false;
}
if ( ! empty( $metadata['textdomain'] ) && in_array( 'wp-i18n', $script_dependencies, true ) ) {
wp_set_script_translations( $script_handle, $metadata['textdomain'] );
}
return $script_handle;
}
/**
* Finds a style handle for the block metadata field. It detects when a path
* to file was provided and registers the style under automatically
* generated handle name. It returns unprocessed style handle otherwise.
*
* @since 5.5.0
* @since 6.1.0 Added `$index` parameter.
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @param int $index Optional. Index of the style to register when multiple items passed.
* Default 0.
* @return string|false Style handle provided directly or created through
* style's registration, or false on failure.
*/
function register_block_style_handle( $metadata, $field_name, $index = 0 ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$style_handle = $metadata[ $field_name ];
if ( is_array( $style_handle ) ) {
if ( empty( $style_handle[ $index ] ) ) {
return false;
}
$style_handle = $style_handle[ $index ];
}
$style_handle_name = generate_block_asset_handle( $metadata['name'], $field_name, $index );
// If the style handle is already registered, skip re-registering.
if ( wp_style_is( $style_handle_name, 'registered' ) ) {
return $style_handle_name;
}
static $wpinc_path_norm = '';
if ( ! $wpinc_path_norm ) {
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
}
$is_core_block = isset( $metadata['file'] ) && str_starts_with( $metadata['file'], $wpinc_path_norm );
// Skip registering individual styles for each core block when a bundled version provided.
if ( $is_core_block && ! wp_should_load_separate_core_block_assets() ) {
return false;
}
$style_path = remove_block_asset_path_prefix( $style_handle );
$is_style_handle = $style_handle === $style_path;
// Allow only passing style handles for core blocks.
if ( $is_core_block && ! $is_style_handle ) {
return false;
}
// Return the style handle unless it's the first item for every core block that requires special treatment.
if ( $is_style_handle && ! ( $is_core_block && 0 === $index ) ) {
return $style_handle;
}
// Check whether styles should have a ".min" suffix or not.
$suffix = SCRIPT_DEBUG ? '' : '.min';
if ( $is_core_block ) {
$style_path = ( 'editorStyle' === $field_name ) ? "editor{$suffix}.css" : "style{$suffix}.css";
}
$style_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $style_path ) );
$style_uri = get_block_asset_url( $style_path_norm );
$version = ! $is_core_block && isset( $metadata['version'] ) ? $metadata['version'] : false;
$result = wp_register_style(
$style_handle_name,
$style_uri,
array(),
$version
);
if ( ! $result ) {
return false;
}
if ( $style_uri ) {
wp_style_add_data( $style_handle_name, 'path', $style_path_norm );
if ( $is_core_block ) {
$rtl_file = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $style_path_norm );
} else {
$rtl_file = str_replace( '.css', '-rtl.css', $style_path_norm );
}
if ( is_rtl() && file_exists( $rtl_file ) ) {
wp_style_add_data( $style_handle_name, 'rtl', 'replace' );
wp_style_add_data( $style_handle_name, 'suffix', $suffix );
wp_style_add_data( $style_handle_name, 'path', $rtl_file );
}
}
return $style_handle_name;
}
/**
* Gets i18n schema for block's metadata read from `block.json` fil