d( 'capability_update_core' ) ) {
				$caps[] = 'do_not_allow';
			} elseif ( is_multisite() && ! is_super_admin( $user_id ) ) {
				$caps[] = 'do_not_allow';
			} elseif ( 'upload_themes' === $cap ) {
				$caps[] = 'install_themes';
			} elseif ( 'upload_plugins' === $cap ) {
				$caps[] = 'install_plugins';
			} else {
				$caps[] = $cap;
			}
			break;
		case 'install_languages':
		case 'update_languages':
			if ( ! wp_is_file_mod_allowed( 'can_install_language_pack' ) ) {
				$caps[] = 'do_not_allow';
			} elseif ( is_multisite() && ! is_super_admin( $user_id ) ) {
				$caps[] = 'do_not_allow';
			} else {
				$caps[] = 'install_languages';
			}
			break;
		case 'activate_plugins':
		case 'deactivate_plugins':
		case 'activate_plugin':
		case 'deactivate_plugin':
			$caps[] = 'activate_plugins';
			if ( is_multisite() ) {
				// update_, install_, and delete_ are handled above with is_super_admin().
				$menu_perms = get_site_option( 'menu_items', array() );
				if ( empty( $menu_perms['plugins'] ) ) {
					$caps[] = 'manage_network_plugins';
				}
			}
			break;
		case 'resume_plugin':
			$caps[] = 'resume_plugins';
			break;
		case 'resume_theme':
			$caps[] = 'resume_themes';
			break;
		case 'delete_user':
		case 'delete_users':
			// If multisite only super admins can delete users.
			if ( is_multisite() && ! is_super_admin( $user_id ) ) {
				$caps[] = 'do_not_allow';
			} else {
				$caps[] = 'delete_users'; // delete_user maps to delete_users.
			}
			break;
		case 'create_users':
			if ( ! is_multisite() ) {
				$caps[] = $cap;
			} elseif ( is_super_admin( $user_id ) || get_site_option( 'add_new_users' ) ) {
				$caps[] = $cap;
			} else {
				$caps[] = 'do_not_allow';
			}
			break;
		case 'manage_links':
			if ( get_option( 'link_manager_enabled' ) ) {
				$caps[] = $cap;
			} else {
				$caps[] = 'do_not_allow';
			}
			break;
		case 'customize':
			$caps[] = 'edit_theme_options';
			break;
		case 'delete_site':
			if ( is_multisite() ) {
				$caps[] = 'manage_options';
			} else {
				$caps[] = 'do_not_allow';
			}
			break;
		case 'edit_term':
		case 'delete_term':
		case 'assign_term':
			if ( ! isset( $args[0] ) ) {
				/* translators: %s: Capability name. */
				$message = __( 'When checking for the %s capability, you must always check it against a specific term.' );

				_doing_it_wrong(
					__FUNCTION__,
					sprintf( $message, '<code>' . $cap . '</code>' ),
					'6.1.0'
				);

				$caps[] = 'do_not_allow';
				break;
			}

			$term_id = (int) $args[0];
			$term    = get_term( $term_id );
			if ( ! $term || is_wp_error( $term ) ) {
				$caps[] = 'do_not_allow';
				break;
			}

			$tax = get_taxonomy( $term->taxonomy );
			if ( ! $tax ) {
				$caps[] = 'do_not_allow';
				break;
			}

			if ( 'delete_term' === $cap
				&& ( get_option( 'default_' . $term->taxonomy ) == $term->term_id
					|| get_option( 'default_term_' . $term->taxonomy ) == $term->term_id )
			) {
				$caps[] = 'do_not_allow';
				break;
			}

			$taxo_cap = $cap . 's';

			$caps = map_meta_cap( $tax->cap->$taxo_cap, $user_id, $term_id );

			break;
		case 'manage_post_tags':
		case 'edit_categories':
		case 'edit_post_tags':
		case 'delete_categories':
		case 'delete_post_tags':
			$caps[] = 'manage_categories';
			break;
		case 'assign_categories':
		case 'assign_post_tags':
			$caps[] = 'edit_posts';
			break;
		case 'create_sites':
		case 'delete_sites':
		case 'manage_network':
		case 'manage_sites':
		case 'manage_network_users':
		case 'manage_network_plugins':
		case 'manage_network_themes':
		case 'manage_network_options':
		case 'upgrade_network':
			$caps[] = $cap;
			break;
		case 'setup_network':
			if ( is_multisite() ) {
				$caps[] = 'manage_network_options';
			} else {
				$caps[] = 'manage_options';
			}
			break;
		case 'update_php':
			if ( is_multisite() && ! is_super_admin( $user_id ) ) {
				$caps[] = 'do_not_allow';
			} else {
				$caps[] = 'update_core';
			}
			break;
		case 'update_https':
			if ( is_multisite() && ! is_super_admin( $user_id ) ) {
				$caps[] = 'do_not_allow';
			} else {
				$caps[] = 'manage_options';
				$caps[] = 'update_core';
			}
			break;
		case 'export_others_personal_data':
		case 'erase_others_personal_data':
		case 'manage_privacy_options':
			$caps[] = is_multisite() ? 'manage_network' : 'manage_options';
			break;
		case 'create_app_password':
		case 'list_app_passwords':
		case 'read_app_password':
		case 'edit_app_password':
		case 'delete_app_passwords':
		case 'delete_app_password':
			$caps = map_meta_cap( 'edit_user', $user_id, $args[0] );
			break;
		default:
			// Handle meta capabilities for custom post types.
			global $post_type_meta_caps;
			if ( isset( $post_type_meta_caps[ $cap ] ) ) {
				return map_meta_cap( $post_type_meta_caps[ $cap ], $user_id, ...$args );
			}

			// Block capabilities map to their post equivalent.
			$block_caps = array(
				'edit_blocks',
				'edit_others_blocks',
				'publish_blocks',
				'read_private_blocks',
				'delete_blocks',
				'delete_private_blocks',
				'delete_published_blocks',
				'delete_others_blocks',
				'edit_private_blocks',
				'edit_published_blocks',
			);
			if ( in_array( $cap, $block_caps, true ) ) {
				$cap = str_replace( '_blocks', '_posts', $cap );
			}

			// If no meta caps match, return the original cap.
			$caps[] = $cap;
	}

	/**
	 * Filters the primitive capabilities required of the given user to satisfy the
	 * capability being checked.
	 *
	 * @since 2.8.0
	 *
	 * @param string[] $caps    Primitive capabilities required of the user.
	 * @param string   $cap     Capability being checked.
	 * @param int      $user_id The user ID.
	 * @param array    $args    Adds context to the capability check, typically
	 *                          starting with an object ID.
	 */
	return apply_filters( 'map_meta_cap', $caps, $cap, $user_id, $args );
}

/**
 * Returns whether the current user has the specified capability.
 *
 * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta
 * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
 * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
 *
 * Example usage:
 *
 *     current_user_can( 'edit_posts' );
 *     current_user_can( 'edit_post', $post->ID );
 *     current_user_can( 'edit_post_meta', $post->ID, $meta_key );
 *
 * While checking against particular roles in place of a capability is supported
 * in part, this practice is discouraged as it may produce unreliable results.
 *
 * Note: Will always return true if the current user is a super admin, unless specifically denied.
 *
 * @since 2.0.0
 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
 *              by adding it to the function signature.
 * @since 5.8.0 Converted to wrapper for the user_can() function.
 *
 * @see WP_User::has_cap()
 * @see map_meta_cap()
 *
 * @param string $capability Capability name.
 * @param mixed  ...$args    Optional further parameters, typically starting with an object ID.
 * @return bool Whether the current user has the given capability. If `$capability` is a meta cap and `$object_id` is
 *              passed, whether the current user has the given meta capability for the given object.
 */
function current_user_can( $capability, ...$args ) {
	return user_can( wp_get_current_user(), $capability, ...$args );
}

/**
 * Returns whether the current user has the specified capability for a given site.
 *
 * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta
 * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
 * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
 *
 * Example usage:
 *
 *     current_user_can_for_blog( $blog_id, 'edit_posts' );
 *     current_user_can_for_blog( $blog_id, 'edit_post', $post->ID );
 *     current_user_can_for_blog( $blog_id, 'edit_post_meta', $post->ID, $meta_key );
 *
 * @since 3.0.0
 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
 *              by adding it to the function signature.
 * @since 5.8.0 Wraps current_user_can() after switching to blog.
 *
 * @param int    $blog_id    Site ID.
 * @param string $capability Capability name.
 * @param mixed  ...$args    Optional further parameters, typically starting with an object ID.
 * @return bool Whether the user has the given capability.
 */
function current_user_can_for_blog( $blog_id, $capability, ...$args ) {
	$switched = is_multisite() ? switch_to_blog( $blog_id ) : false;

	$can = current_user_can( $capability, ...$args );

	if ( $switched ) {
		restore_current_blog();
	}

	return $can;
}

/**
 * Returns whether the author of the supplied post has the specified capability.
 *
 * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta
 * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
 * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
 *
 * Example usage:
 *
 *     author_can( $post, 'edit_posts' );
 *     author_can( $post, 'edit_post', $post->ID );
 *     author_can( $post, 'edit_post_meta', $post->ID, $meta_key );
 *
 * @since 2.9.0
 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
 *              by adding it to the function signature.
 *
 * @param int|WP_Post $post       Post ID or post object.
 * @param string      $capability Capability name.
 * @param mixed       ...$args    Optional further parameters, typically starting with an object ID.
 * @return bool Whether the post author has the given capability.
 */
function author_can( $post, $capability, ...$args ) {
	$post = get_post( $post );
	if ( ! $post ) {
		return false;
	}

	$author = get_userdata( $post->post_author );

	if ( ! $author ) {
		return false;
	}

	return $author->has_cap( $capability, ...$args );
}

/**
 * Returns whether a particular user has the specified capability.
 *
 * This function also accepts an ID of an object to check against if the capability is a meta capability. Meta
 * capabilities such as `edit_post` and `edit_user` are capabilities used by the `map_meta_cap()` function to
 * map to primitive capabilities that a user or role has, such as `edit_posts` and `edit_others_posts`.
 *
 * Example usage:
 *
 *     user_can( $user->ID, 'edit_posts' );
 *     user_can( $user->ID, 'edit_post', $post->ID );
 *     user_can( $user->ID, 'edit_post_meta', $post->ID, $meta_key );
 *
 * @since 3.1.0
 * @since 5.3.0 Formalized the existing and already documented `...$args` parameter
 *              by adding it to the function signature.
 *
 * @param int|WP_User $user       User ID or object.
 * @param string      $capability Capability name.
 * @param mixed       ...$args    Optional further parameters, typically starting with an object ID.
 * @return bool Whether the user has the given capability.
 */
function user_can( $user, $capability, ...$args ) {
	if ( ! is_object( $user ) ) {
		$user = get_userdata( $user );
	}

	if ( empty( $user ) ) {
		// User is logged out, create anonymous user object.
		$user = new WP_User( 0 );
		$user->init( new stdClass() );
	}

	return $user->has_cap( $capability, ...$args );
}

/**
 * Retrieves the global WP_Roles instance and instantiates it if necessary.
 *
 * @since 4.3.0
 *
 * @global WP_Roles $wp_roles WordPress role management object.
 *
 * @return WP_Roles WP_Roles global instance if not already instantiated.
 */
function wp_roles() {
	global $wp_roles;

	if ( ! isset( $wp_roles ) ) {
		$wp_roles = new WP_Roles();
	}
	return $wp_roles;
}

/**
 * Retrieves role object.
 *
 * @since 2.0.0
 *
 * @param string $role Role name.
 * @return WP_Role|null WP_Role object if found, null if the role does not exist.
 */
function get_role( $role ) {
	return wp_roles()->get_role( $role );
}

/**
 * Adds a role, if it does not exist.
 *
 * @since 2.0.0
 *
 * @param string $role         Role name.
 * @param string $display_name Display name for role.
 * @param bool[] $capabilities List of capabilities keyed by the capability name,
 *                             e.g. array( 'edit_posts' => true, 'delete_posts' => false ).
 * @return WP_Role|void WP_Role object, if the role is added.
 */
function add_role( $role, $display_name, $capabilities = array() ) {
	if ( empty( $role ) ) {
		return;
	}

	return wp_roles()->add_role( $role, $display_name, $capabilities );
}

/**
 * Removes a role, if it exists.
 *
 * @since 2.0.0
 *
 * @param string $role Role name.
 */
function remove_role( $role ) {
	wp_roles()->remove_role( $role );
}

/**
 * Retrieves a list of super admins.
 *
 * @since 3.0.0
 *
 * @global array $super_admins
 *
 * @return string[] List of super admin logins.
 */
function get_super_admins() {
	global $super_admins;

	if ( isset( $super_admins ) ) {
		return $super_admins;
	} else {
		return get_site_option( 'site_admins', array( 'admin' ) );
	}
}

/**
 * Determines whether user is a site admin.
 *
 * @since 3.0.0
 *
 * @param int|false $user_id Optional. The ID of a user. Defaults to false, to check the current user.
 * @return bool Whether the user is a site admin.
 */
function is_super_admin( $user_id = false ) {
	if ( ! $user_id ) {
		$user = wp_get_current_user();
	} else {
		$user = get_userdata( $user_id );
	}

	if ( ! $user || ! $user->exists() ) {
		return false;
	}

	if ( is_multisite() ) {
		$super_admins = get_super_admins();
		if ( is_array( $super_admins ) && in_array( $user->user_login, $super_admins, true ) ) {
			return true;
		}
	} else {
		if ( $user->has_cap( 'delete_users' ) ) {
			return true;
		}
	}

	return false;
}

/**
 * Grants Super Admin privileges.
 *
 * @since 3.0.0
 *
 * @global array $super_admins
 *
 * @param int $user_id ID of the user to be granted Super Admin privileges.
 * @return bool True on success, false on failure. This can fail when the user is
 *              already a super admin or when the `$super_admins` global is defined.
 */
function grant_super_admin( $user_id ) {
	// If global super_admins override is defined, there is nothing to do here.
	if ( isset( $GLOBALS['super_admins'] ) || ! is_multisite() ) {
		return false;
	}

	/**
	 * Fires before the user is granted Super Admin privileges.
	 *
	 * @since 3.0.0
	 *
	 * @param int $user_id ID of the user that is about to be granted Super Admin privileges.
	 */
	do_action( 'grant_super_admin', $user_id );

	// Directly fetch site_admins instead of using get_super_admins().
	$super_admins = get_site_option( 'site_admins', array( 'admin' ) );

	$user = get_userdata( $user_id );
	if ( $user && ! in_array( $user->user_login, $super_admins, true ) ) {
		$super_admins[] = $user->user_login;
		update_site_option( 'site_admins', $super_admins );

		/**
		 * Fires after the user is granted Super Admin privileges.
		 *
		 * @since 3.0.0
		 *
		 * @param int $user_id ID of the user that was granted Super Admin privileges.
		 */
		do_action( 'granted_super_admin', $user_id );
		return true;
	}
	return false;
}

/**
 * Revokes Super Admin privileges.
 *
 * @since 3.0.0
 *
 * @global array $super_admins
 *
 * @param int $user_id ID of the user Super Admin privileges to be revoked from.
 * @return bool True on success, false on failure. This can fail when the user's email
 *              is the network admin email or when the `$super_admins` global is defined.
 */
function revoke_super_admin( $user_id ) {
	// If global super_admins override is defined, there is nothing to do here.
	if ( isset( $GLOBALS['super_admins'] ) || ! is_multisite() ) {
		return false;
	}

	/**
	 * Fires before the user's Super Admin privileges are revoked.
	 *
	 * @since 3.0.0
	 *
	 * @param int $user_id ID of the user Super Admin privileges are being revoked from.
	 */
	do_action( 'revoke_super_admin', $user_id );

	// Directly fetch site_admins instead of using get_super_admins().
	$super_admins = get_site_option( 'site_admins', array( 'admin' ) );

	$user = get_userdata( $user_id );
	if ( $user && 0 !== strcasecmp( $user->user_email, get_site_option( 'admin_email' ) ) ) {
		$key = array_search( $user->user_login, $super_admins, true );
		if ( false !== $key ) {
			unset( $super_admins[ $key ] );
			update_site_option( 'site_admins', $super_admins );

			/**
			 * Fires after the user's Super Admin privileges are revoked.
			 *
			 * @since 3.0.0
			 *
			 * @param int $user_id ID of the user Super Admin privileges were revoked from.
			 */
			do_action( 'revoked_super_admin', $user_id );
			return true;
		}
	}
	return false;
}

/**
 * Filters the user capabilities to grant the 'install_languages' capability as necessary.
 *
 * A user must have at least one out of the 'update_core', 'install_plugins', and
 * 'install_themes' capabilities to qualify for 'install_languages'.
 *
 * @since 4.9.0
 *
 * @param bool[] $allcaps An array of all the user's capabilities.
 * @return bool[] Filtered array of the user's capabilities.
 */
function wp_maybe_grant_install_languages_cap( $allcaps ) {
	if ( ! empty( $allcaps['update_core'] ) || ! empty( $allcaps['install_plugins'] ) || ! empty( $allcaps['install_themes'] ) ) {
		$allcaps['install_languages'] = true;
	}

	return $allcaps;
}

/**
 * Filters the user capabilities to grant the 'resume_plugins' and 'resume_themes' capabilities as necessary.
 *
 * @since 5.2.0
 *
 * @param bool[] $allcaps An array of all the user's capabilities.
 * @return bool[] Filtered array of the user's capabilities.
 */
function wp_maybe_grant_resume_extensions_caps( $allcaps ) {
	// Even in a multisite, regular administrators should be able to resume plugins.
	if ( ! empty( $allcaps['activate_plugins'] ) ) {
		$allcaps['resume_plugins'] = true;
	}

	// Even in a multisite, regular administrators should be able to resume themes.
	if ( ! empty( $allcaps['switch_themes'] ) ) {
		$allcaps['resume_themes'] = true;
	}

	return $allcaps;
}

/**
 * Filters the user capabilities to grant the 'view_site_health_checks' capabilities as necessary.
 *
 * @since 5.2.2
 *
 * @param bool[]   $allcaps An array of all the user's capabilities.
 * @param string[] $caps    Required primitive capabilities for the requested capability.
 * @param array    $args {
 *     Arguments that accompany the requested capability check.
 *
 *     @type string    $0 Requested capability.
 *     @type int       $1 Concerned user ID.
 *     @type mixed  ...$2 Optional second and further parameters, typically object ID.
 * }
 * @param WP_User  $user    The user object.
 * @return bool[] Filtered array of the user's capabilities.
 */
function wp_maybe_grant_site_health_caps( $allcaps, $caps, $args, $user ) {
	if ( ! empty( $allcaps['install_plugins'] ) && ( ! is_multisite() || is_super_admin( $user->ID ) ) ) {
		$allcaps['view_site_health_checks'] = true;
	}

	return $allcaps;
}

return;

// Dummy gettext calls to get strings in the catalog.
/* translators: User role for administrators. */
_x( 'Administrator', 'User role' );
/* translators: User role for editors. */
_x( 'Editor', 'User role' );
/* translators: User role for authors. */
_x( 'Author', 'User role' );
/* translators: User role for contributors. */
_x( 'Contributor', 'User role' );
/* translators: User role for subscribers. */
_x( 'Subscriber', 'User role' );
s_support    = _wp_array_get( $typography_supports, array( 'textColumns' ), false );
	$has_text_decoration_support = _wp_array_get( $typography_supports, array( '__experimentalTextDecoration' ), false );
	$has_text_transform_support  = _wp_array_get( $typography_supports, array( '__experimentalTextTransform' ), false );

	// Whether to skip individual block support features.
	$should_skip_font_size       = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontSize' );
	$should_skip_font_family     = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontFamily' );
	$should_skip_font_style      = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontStyle' );
	$should_skip_font_weight     = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontWeight' );
	$should_skip_line_height     = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'lineHeight' );
	$should_skip_text_columns    = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textColumns' );
	$should_skip_text_decoration = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textDecoration' );
	$should_skip_text_transform  = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textTransform' );
	$should_skip_letter_spacing  = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'letterSpacing' );

	$typography_block_styles = array();
	if ( $has_font_size_support && ! $should_skip_font_size ) {
		$preset_font_size                    = array_key_exists( 'fontSize', $block_attributes )
			? "var:preset|font-size|{$block_attributes['fontSize']}"
			: null;
		$custom_font_size                    = isset( $block_attributes['style']['typography']['fontSize'] )
			? $block_attributes['style']['typography']['fontSize']
			: null;
		$typography_block_styles['fontSize'] = $preset_font_size ? $preset_font_size : wp_get_typography_font_size_value(
			array(
				'size' => $custom_font_size,
			)
		);
	}

	if ( $has_font_family_support && ! $should_skip_font_family ) {
		$preset_font_family                    = array_key_exists( 'fontFamily', $block_attributes )
			? "var:preset|font-family|{$block_attributes['fontFamily']}"
			: null;
		$custom_font_family                    = isset( $block_attributes['style']['typography']['fontFamily'] )
			? wp_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['fontFamily'], 'font-family' )
			: null;
		$typography_block_styles['fontFamily'] = $preset_font_family ? $preset_font_family : $custom_font_family;
	}

	if (
		$has_font_style_support &&
		! $should_skip_font_style &&
		isset( $block_attributes['style']['typography']['fontStyle'] )
	) {
		$typography_block_styles['fontStyle'] = wp_typography_get_preset_inline_style_value(
			$block_attributes['style']['typography']['fontStyle'],
			'font-style'
		);
	}

	if (
		$has_font_weight_support &&
		! $should_skip_font_weight &&
		isset( $block_attributes['style']['typography']['fontWeight'] )
	) {
		$typography_block_styles['fontWeight'] = wp_typography_get_preset_inline_style_value(
			$block_attributes['style']['typography']['fontWeight'],
			'font-weight'
		);
	}

	if ( $has_line_height_support && ! $should_skip_line_height ) {
		$typography_block_styles['lineHeight'] = _wp_array_get( $block_attributes, array( 'style', 'typography', 'lineHeight' ) );
	}

	if ( $has_text_columns_support && ! $should_skip_text_columns && isset( $block_attributes['style']['typography']['textColumns'] ) ) {
		$typography_block_styles['textColumns'] = _wp_array_get( $block_attributes, array( 'style', 'typography', 'textColumns' ), null );
	}

	if (
		$has_text_decoration_support &&
		! $should_skip_text_decoration &&
		isset( $block_attributes['style']['typography']['textDecoration'] )
	) {
		$typography_block_styles['textDecoration'] = wp_typography_get_preset_inline_style_value(
			$block_attributes['style']['typography']['textDecoration'],
			'text-decoration'
		);
	}

	if (
		$has_text_transform_support &&
		! $should_skip_text_transform &&
		isset( $block_attributes['style']['typography']['textTransform'] )
	) {
		$typography_block_styles['textTransform'] = wp_typography_get_preset_inline_style_value(
			$block_attributes['style']['typography']['textTransform'],
			'text-transform'
		);
	}

	if (
		$has_letter_spacing_support &&
		! $should_skip_letter_spacing &&
		isset( $block_attributes['style']['typography']['letterSpacing'] )
	) {
		$typography_block_styles['letterSpacing'] = wp_typography_get_preset_inline_style_value(
			$block_attributes['style']['typography']['letterSpacing'],
			'letter-spacing'
		);
	}

	$attributes = array();
	$styles     = wp_style_engine_get_styles(
		array( 'typography' => $typography_block_styles ),
		array( 'convert_vars_to_classnames' => true )
	);

	if ( ! empty( $styles['classnames'] ) ) {
		$attributes['class'] = $styles['classnames'];
	}

	if ( ! empty( $styles['css'] ) ) {
		$attributes['style'] = $styles['css'];
	}

	return $attributes;
}

/**
 * Generates an inline style value for a typography feature e.g. text decoration,
 * text transform, and font style.
 *
 * Note: This function is for backwards compatibility.
 * * It is necessary to parse older blocks whose typography styles contain presets.
 * * It mostly replaces the deprecated `wp_typography_get_css_variable_inline_style()`,
 *   but skips compiling a CSS declaration as the style engine takes over this role.
 * @link https://github.com/wordpress/gutenberg/pull/27555
 *
 * @since 6.1.0
 *
 * @param string $style_value  A raw style value for a single typography feature from a block's style attribute.
 * @param string $css_property Slug for the CSS property the inline style sets.
 * @return string A CSS inline style value.
 */
function wp_typography_get_preset_inline_style_value( $style_value, $css_property ) {
	// If the style value is not a preset CSS variable go no further.
	if ( empty( $style_value ) || ! str_contains( $style_value, "var:preset|{$css_property}|" ) ) {
		return $style_value;
	}

	/*
	 * For backwards compatibility.
	 * Presets were removed in WordPress/gutenberg#27555.
	 * A preset CSS variable is the style.
	 * Gets the style value from the string and return CSS style.
	 */
	$index_to_splice = strrpos( $style_value, '|' ) + 1;
	$slug            = _wp_to_kebab_case( substr( $style_value, $index_to_splice ) );

	// Return the actual CSS inline style value,
	// e.g. `var(--wp--preset--text-decoration--underline);`.
	return sprintf( 'var(--wp--preset--%s--%s);', $css_property, $slug );
}

/**
 * Renders typography styles/content to the block wrapper.
 *
 * @since 6.1.0
 *
 * @param string $block_content Rendered block content.
 * @param array  $block         Block object.
 * @return string Filtered block content.
 */
function wp_render_typography_support( $block_content, $block ) {
	if ( ! isset( $block['attrs']['style']['typography']['fontSize'] ) ) {
		return $block_content;
	}

	$custom_font_size = $block['attrs']['style']['typography']['fontSize'];
	$fluid_font_size  = wp_get_typography_font_size_value( array( 'size' => $custom_font_size ) );

	/*
	 * Checks that $fluid_font_size does not match $custom_font_size,
	 * which means it's been mutated by the fluid font size functions.
	 */
	if ( ! empty( $fluid_font_size ) && $fluid_font_size !== $custom_font_size ) {
		// Replaces the first instance of `font-size:$custom_font_size` with `font-size:$fluid_font_size`.
		return preg_replace( '/font-size\s*:\s*' . preg_quote( $custom_font_size, '/' ) . '\s*;?/', 'font-size:' . esc_attr( $fluid_font_size ) . ';', $block_content, 1 );
	}

	return $block_content;
}

/**
 * Checks a string for a unit and value and returns an array
 * consisting of `'value'` and `'unit'`, e.g. array( '42', 'rem' ).
 *
 * @since 6.1.0
 *
 * @param string|int|float $raw_value Raw size value from theme.json.
 * @param array            $options   {
 *     Optional. An associative array of options. Default is empty array.
 *
 *     @type string   $coerce_to        Coerce the value to rem or px. Default `'rem'`.
 *     @type int      $root_size_value  Value of root font size for rem|em <-> px conversion. Default `16`.
 *     @type string[] $acceptable_units An array of font size units. Default `array( 'rem', 'px', 'em' )`;
 * }
 * @return array|null An array consisting of `'value'` and `'unit'` properties on success.
 *                    `null` on failure.
 */
function wp_get_typography_value_and_unit( $raw_value, $options = array() ) {
	if ( ! is_string( $raw_value ) && ! is_int( $raw_value ) && ! is_float( $raw_value ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			__( 'Raw size value must be a string, integer, or float.' ),
			'6.1.0'
		);
		return null;
	}

	if ( empty( $raw_value ) ) {
		return null;
	}

	// Converts numbers to pixel values by default.
	if ( is_numeric( $raw_value ) ) {
		$raw_value = $raw_value . 'px';
	}

	$defaults = array(
		'coerce_to'        => '',
		'root_size_value'  => 16,
		'acceptable_units' => array( 'rem', 'px', 'em' ),
	);

	$options = wp_parse_args( $options, $defaults );

	$acceptable_units_group = implode( '|', $options['acceptable_units'] );
	$pattern                = '/^(\d*\.?\d+)(' . $acceptable_units_group . '){1,1}$/';

	preg_match( $pattern, $raw_value, $matches );

	// Bails out if not a number value and a px or rem unit.
	if ( ! isset( $matches[1] ) || ! isset( $matches[2] ) ) {
		return null;
	}

	$value = $matches[1];
	$unit  = $matches[2];

	/*
	 * Default browser font size. Later, possibly could inject some JS to
	 * compute this `getComputedStyle( document.querySelector( "html" ) ).fontSize`.
	 */
	if ( 'px' === $options['coerce_to'] && ( 'em' === $unit || 'rem' === $unit ) ) {
		$value = $value * $options['root_size_value'];
		$unit  = $options['coerce_to'];
	}

	if ( 'px' === $unit && ( 'em' === $options['coerce_to'] || 'rem' === $options['coerce_to'] ) ) {
		$value = $value / $options['root_size_value'];
		$unit  = $options['coerce_to'];
	}

	/*
	 * No calculation is required if swapping between em and rem yet,
	 * since we assume a root size value. Later we might like to differentiate between
	 * :root font size (rem) and parent element font size (em) relativity.
	 */
	if ( ( 'em' === $options['coerce_to'] || 'rem' === $options['coerce_to'] ) && ( 'em' === $unit || 'rem' === $unit ) ) {
		$unit = $options['coerce_to'];
	}

	return array(
		'value' => round( $value, 3 ),
		'unit'  => $unit,
	);
}

/**
 * Internal implementation of CSS clamp() based on available min/max viewport
 * width and min/max font sizes.
 *
 * @since 6.1.0
 * @since 6.3.0 Checks for unsupported min/max viewport values that cause invalid clamp values.
 * @access private
 *
 * @param array $args {
 *     Optional. An associative array of values to calculate a fluid formula
 *     for font size. Default is empty array.
 *
 *     @type string $maximum_viewport_width Maximum size up to which type will have fluidity.
 *     @type string $minimum_viewport_width Minimum viewport size from which type will have fluidity.
 *     @type string $maximum_font_size      Maximum font size for any clamp() calculation.
 *     @type string $minimum_font_size      Minimum font size for any clamp() calculation.
 *     @type int    $scale_factor           A scale factor to determine how fast a font scales within boundaries.
 * }
 * @return string|null A font-size value using clamp() on success, otherwise null.
 */
function wp_get_computed_fluid_typography_value( $args = array() ) {
	$maximum_viewport_width_raw = isset( $args['maximum_viewport_width'] ) ? $args['maximum_viewport_width'] : null;
	$minimum_viewport_width_raw = isset( $args['minimum_viewport_width'] ) ? $args['minimum_viewport_width'] : null;
	$maximum_font_size_raw      = isset( $args['maximum_font_size'] ) ? $args['maximum_font_size'] : null;
	$minimum_font_size_raw      = isset( $args['minimum_font_size'] ) ? $args['minimum_font_size'] : null;
	$scale_factor               = isset( $args['scale_factor'] ) ? $args['scale_factor'] : null;

	// Normalizes the minimum font size in order to use the value for calculations.
	$minimum_font_size = wp_get_typography_value_and_unit( $minimum_font_size_raw );

	/*
	 * We get a 'preferred' unit to keep units consistent when calculating,
	 * otherwise the result will not be accurate.
	 */
	$font_size_unit = isset( $minimum_font_size['unit'] ) ? $minimum_font_size['unit'] : 'rem';

	// Normalizes the maximum font size in order to use the value for calculations.
	$maximum_font_size = wp_get_typography_value_and_unit(
		$maximum_font_size_raw,
		array(
			'coerce_to' => $font_size_unit,
		)
	);

	// Checks for mandatory min and max sizes, and protects against unsupported units.
	if ( ! $maximum_font_size || ! $minimum_font_size ) {
		return null;
	}

	// Uses rem for accessible fluid target font scaling.
	$minimum_font_size_rem = wp_get_typography_value_and_unit(
		$minimum_font_size_raw,
		array(
			'coerce_to' => 'rem',
		)
	);

	// Viewport widths defined for fluid typography. Normalize units.
	$maximum_viewport_width = wp_get_typography_value_and_unit(
		$maximum_viewport_width_raw,
		array(
			'coerce_to' => $font_size_unit,
		)
	);
	$minimum_viewport_width = wp_get_typography_value_and_unit(
		$minimum_viewport_width_raw,
		array(
			'coerce_to' => $font_size_unit,
		)
	);

	// Protects against unsupported units in min and max viewport widths.
	if ( ! $minimum_viewport_width || ! $maximum_viewport_width ) {
		return null;
	}

	/*
	 * Build CSS rule.
	 * Borrowed from https://websemantics.uk/tools/responsive-font-calculator/.
	 */
	$view_port_width_offset = round( $minimum_viewport_width['value'] / 100, 3 ) . $font_size_unit;
	$linear_factor          = 100 * ( ( $maximum_font_size['value'] - $minimum_font_size['value'] ) / ( $maximum_viewport_width['value'] - $minimum_viewport_width['value'] ) );
	$linear_factor_scaled   = round( $linear_factor * $scale_factor, 3 );
	$linear_factor_scaled   = empty( $linear_factor_scaled ) ? 1 : $linear_factor_scaled;
	$fluid_target_font_size = implode( '', $minimum_font_size_rem ) . " + ((1vw - $view_port_width_offset) * $linear_factor_scaled)";

	return "clamp($minimum_font_size_raw, $fluid_target_font_size, $maximum_font_size_raw)";
}

/**
 * Returns a font-size value based on a given font-size preset.
 * Takes into account fluid typography parameters and attempts to return a CSS
 * formula depending on available, valid values.
 *
 * @since 6.1.0
 * @since 6.1.1 Adjusted rules for min and max font sizes.
 * @since 6.2.0 Added 'settings.typography.fluid.minFontSize' support.
 * @since 6.3.0 Using layout.wideSize as max viewport width, and logarithmic scale factor to calculate minimum font scale.
 *
 * @param array $preset                     {
 *     Required. fontSizes preset value as seen in theme.json.
 *
 *     @type string           $name Name of the font size preset.
 *     @type string           $slug Kebab-case, unique identifier for the font size preset.
 *     @type string|int|float $size CSS font-size value, including units if applicable.
 * }
 * @param bool  $should_use_fluid_typography An override to switch fluid typography "on". Can be used for unit testing.
 *                                           Default is false.
 * @return string|null Font-size value or null if a size is not passed in $preset.
 */
function wp_get_typography_font_size_value( $preset, $should_use_fluid_typography = false ) {
	if ( ! isset( $preset['size'] ) ) {
		return null;
	}

	/*
	 * Catches empty values and 0/'0'.
	 * Fluid calculations cannot be performed on 0.
	 */
	if ( empty( $preset['size'] ) ) {
		return $preset['size'];
	}

	// Checks if fluid font sizes are activated.
	$global_settings     = wp_get_global_settings();
	$typography_settings = isset( $global_settings['typography'] ) ? $global_settings['typography'] : array();
	$layout_settings     = isset( $global_settings['layout'] ) ? $global_settings['layout'] : array();

	if (
		isset( $typography_settings['fluid'] ) &&
		( true === $typography_settings['fluid'] || is_array( $typography_settings['fluid'] ) )
	) {
		$should_use_fluid_typography = true;
	}

	if ( ! $should_use_fluid_typography ) {
		return $preset['size'];
	}

	$fluid_settings = isset( $typography_settings['fluid'] ) && is_array( $typography_settings['fluid'] )
		? $typography_settings['fluid']
		: array();

	// Defaults.
	$default_maximum_viewport_width       = isset( $layout_settings['wideSize'] ) && ! empty( wp_get_typography_value_and_unit( $layout_settings['wideSize'] ) ) ? $layout_settings['wideSize'] : '1600px';
	$default_minimum_viewport_width       = '320px';
	$default_minimum_font_size_factor_max = 0.75;
	$default_minimum_font_size_factor_min = 0.25;
	$default_scale_factor                 = 1;
	$has_min_font_size                    = isset( $fluid_settings['minFontSize'] ) &&
		! empty( wp_get_typography_value_and_unit( $fluid_settings['minFontSize'] ) );
	$default_minimum_font_size_limit      = $has_min_font_size ? $fluid_settings['minFontSize'] : '14px';

	// Font sizes.
	$fluid_font_size_settings = isset( $preset['fluid'] ) ? $preset['fluid'] : null;

	// A font size has explicitly bypassed fluid calculations.
	if ( false === $fluid_font_size_settings ) {
		return $preset['size'];
	}

	// Try to grab explicit min and max fluid font sizes.
	$minimum_font_size_raw = isset( $fluid_font_size_settings['min'] ) ? $fluid_font_size_settings['min'] : null;
	$maximum_font_size_raw = isset( $fluid_font_size_settings['max'] ) ? $fluid_font_size_settings['max'] : null;

	// Font sizes.
	$preferred_size = wp_get_typography_value_and_unit( $preset['size'] );

	// Protects against unsupported units.
	if ( empty( $preferred_size['unit'] ) ) {
		return $preset['size'];
	}

	/*
	 * Normalizes the minimum font size limit according to the incoming unit,
	 * in order to perform comparative checks.
	 */
	$minimum_font_size_limit = wp_get_typography_value_and_unit(
		$default_minimum_font_size_limit,
		array(
			'coerce_to' => $preferred_size['unit'],
		)
	);

	// Don't enforce minimum font size if a font size has explicitly set a min and max value.
	if ( ! empty( $minimum_font_size_limit ) && ( ! $minimum_font_size_raw && ! $maximum_font_size_raw ) ) {
		/*
		 * If a minimum size was not passed to this function
		 * and the user-defined font size is lower than $minimum_font_size_limit,
		 * do not calculate a fluid value.
		 */
		if ( $preferred_size['value'] <= $minimum_font_size_limit['value'] ) {
			return $preset['size'];
		}
	}

	// If no fluid max font size is available use the incoming value.
	if ( ! $maximum_font_size_raw ) {
		$maximum_font_size_raw = $preferred_size['value'] . $preferred_size['unit'];
	}

	/*
	 * If no minimumFontSize is provided, create one using
	 * the given font size multiplied by the min font size scale factor.
	 */
	if ( ! $minimum_font_size_raw ) {
		$preferred_font_size_in_px = 'px' === $preferred_size['unit'] ? $preferred_size['value'] : $preferred_size['value'] * 16;

		/*
		 * The scale factor is a multiplier that affects how quickly the curve will move towards the minimum,
		 * that is, how quickly the size factor reaches 0 given increasing font size values.
		 * For a - b * log2(), lower values of b will make the curve move towards the minimum faster.
		 * The scale factor is constrained between min and max values.
		 */
		$minimum_font_size_factor     = min( max( 1 - 0.075 * log( $preferred_font_size_in_px, 2 ), $default_minimum_font_size_factor_min ), $default_minimum_font_size_factor_max );
		$calculated_minimum_font_size = round( $preferred_size['value'] * $minimum_font_size_factor, 3 );

		// Only use calculated min font size if it's > $minimum_font_size_limit value.
		if ( ! empty( $minimum_font_size_limit ) && $calculated_minimum_font_size <= $minimum_font_size_limit['value'] ) {
			$minimum_font_size_raw = $minimum_font_size_limit['value'] . $minimum_font_size_limit['unit'];
		} else {
			$minimum_font_size_raw = $calculated_minimum_font_size . $preferred_size['unit'];
		}
	}

	$fluid_font_size_value = wp_get_computed_fluid_typography_value(
		array(
			'minimum_viewport_width' => $default_minimum_viewport_width,
			'maximum_viewport_width' => $default_maximum_viewport_width,
			'minimum_font_size'      => $minimum_font_size_raw,
			'maximum_font_size'      => $maximum_font_size_raw,
			'scale_factor'           => $default_scale_factor,
		)
	);

	if ( ! empty( $fluid_font_size_value ) ) {
		return $fluid_font_size_value;
	}

	return $preset['size'];
}

// Register the block support.
WP_Block_Supports::get_instance()->register(
	'typography',
	array(
		'register_attribute' => 'wp_register_typography_support',
		'apply'              => 'wp_apply_typography_support',
	)
);