FM / components

/home/desid573/cf.desidrivers.com.au/wp-content/themes/Divi/core/components/

/home/desid573/cf.desidrivers.com.au/wp-content/themes/Divi/core/components

Name	Size	Mode	Actions
api/	-	0755	rm
cache/	-	0755	rm
data/	-	0755	rm
lib/	-	0755	rm
mu-plugins/	-	0755	rm
post/	-	0755	rm
Cache.php	8931	0644	edit dl rm
CompatibilityWarning.php	70131	0644	edit dl rm
HTTPInterface.php	11010	0644	edit dl rm
init.php	14451	0644	edit dl rm
Logger.php	3796	0644	edit dl rm
PageResource.php	29121	0644	edit dl rm
Portability.php	79612	0644	edit dl rm
README.md	934	0644	edit dl rm
SupportCenter.php	115153	0644	edit dl rm
SupportCenterMUAutoloader.php	1629	0644	edit dl rm
Updates.php	26345	0644	edit dl rm
VersionRollback.php	18513	0644	edit dl rm

Edit: /home/desid573/cf.desidrivers.com.au/wp-content/themes/Divi/core/components/PageResource.php (29121B)

<?php

/**
 * Manages a frontend inline CSS or JavaScript resource.
 *
 * If possible, the resource will be served as a static file for better performance. It can be
 * tied to a specific post or it can be 'global'. The resource can be output, static or inline,
 * to one of four locations on the page:
 *
 *   * `head-early`: right AFTER theme styles have been enqueued
 *   * `head`      : right BEFORE the theme and wp's inline custom css
 *   * `head-late` : right AFTER the theme and wp's inline custom css
 *   * `footer`    : in the footer
 *
 * The first time the class is instantiated, a static callback method will be registered for each
 * output location. Inside each callback, we'll iterate over any/all instances that are assigned
 * to the current output location and perform the following steps:
 *
 *   1. If a static file exists for the resource, go to the next step. Otherwise, try to create
 *      a static file for the resource if it has `data`. If it doesn't have `data`, assign it to
 *      the next output location and then move on to the next resource (continue).
 *   2. If a static file exists for the resource, enqueue it (via WP or manually) and then move on
 *      to the next resource (continue). If no static file exists, go to the next step.
 *   3. Output the resource inline.
 *
 * @since   2.0
 *
 * @package ET\Core
 */
class ET_Core_PageResource {

private static $_LOCK_FILE;

/**
	 * Output locations.
	 *
	 * @var string[]
	 */
	private static $_OUTPUT_LOCATIONS = array(
		'head-early',
		'head',
		'head-late',
		'footer',
	);

/**
	 * Resource owners.
	 *
	 * @var string[]
	 */
	private static $_OWNERS = array(
		'divi',
		'builder',
		'epanel',
		'extra',
		'core',
		'bloom',
		'monarch',
		'custom',
		'all',
	);

/**
	 * Resource scopes.
	 *
	 * @var string[]
	 */
	private static $_SCOPES = array(
		'global',
		'post',
	);

private static $_TEMP_DIRS = array();

/**
	 * Resource types.
	 *
	 * @var string[]
	 */
	private static $_TYPES = array(
		'style',
		'script',
	);

/**
	 * Whether or not we have write access to the filesystem.
	 *
	 * @var bool
	 */
	private static $_can_write;

private static $_onerror = 'et_core_page_resource_fallback(this, true)';
	private static $_onload  = 'et_core_page_resource_fallback(this)';

private static $_request_id;
	private static $_request_time;

/**
	 * All instances of this class.
	 *
	 * @var ET_Core_PageResource[] {
	 *
	 *     @type ET_Core_PageResource $slug
	 * }
	 */
	private static $_resources;

/**
	 * All instances of this class organized by output location and sorted by priority.
	 *
	 * @var array[] {
	 *
	 *     @type array[] $location {@see self::$_OUTPUT_LOCATIONS} {
	 *
	 *         @type ET_Core_PageResource[] $priority {
	 *
	 *             @type ET_Core_PageResource $slug
	 *         }
	 *     }
	 * }
	 */
	private static $_resources_by_location;

/**
	 * All instances of this class organized by scope.
	 *
	 * @var array[] {
	 *
	 *     @type ET_Core_PageResource[] $post|$global {
	 *
	 *         @type ET_Core_PageResource $slug
	 *     }
	 * }
	 */
	private static $_resources_by_scope;

/**
	 * @var string
	 */
	public static $WP_CONTENT_DIR;

/**
	 * @var string
	 */
	public static $current_output_location;

/**
	 * @var ET_Core_Data_Utils
	 */
	public static $data_utils;

/**
	 * @var \WP_Filesystem_Base|null
	 */
	public static $wpfs;

/**
	 * The absolute path to the directory where the static resource will be stored.
	 *
	 * @var string
	 */
	public $BASE_DIR;

/**
	 * The absolute path to the static resource on the server.
	 *
	 * @var string
	 */
	public $PATH;

public $TEMP_DIR;

/**
	 * The absolute URL through which the static resource can be downloaded.
	 *
	 * @var string
	 */
	public $URL;

/**
	 * The data/contents for/of the static resource sorted by priority.
	 *
	 * @var array
	 */
	public $data;

/**
	 * Whether or not this resource has been disabled.
	 *
	 * @var bool
	 */
	public $disabled;

/**
	 * Whether or not the static resource file has been enqueued.
	 *
	 * @var bool
	 */
	public $enqueued;

/**
	 * Whether or not this resource is forced inline.
	 *
	 * @var bool
	 */
	public $forced_inline;

/**
	 * @var string
	 */
	public $filename;

/**
	 * Whether or not the resource has already been output to the page inline.
	 *
	 * @var bool
	 */
	public $inlined;

/**
	 * The owner of this instance.
	 *
	 * @var string
	 */
	public $owner;

/**
	 * The id of the post to which this resource belongs.
	 *
	 * @var string
	 */
	public $post_id;

/**
	 * The priority of this resource.
	 *
	 * @var int
	 */
	public $priority;

/**
	 * A unique identifier for this resource.
	 *
	 * @var string
	 */
	public $slug;

/**
	 * The resource type (style|script).
	 *
	 * @var string
	 */
	public $type;

/**
	 * The output location during which this resource's static file should be generated.
	 *
	 * @var string
	 */
	public $write_file_location;

/**
	 * ET_Core_PageResource constructor
	 *
	 * @param string     $owner    The owner of the instance (core|divi|builder|bloom|monarch|custom).
	 * @param string     $slug     A string that uniquely identifies the resource.
	 * @param string|int $post_id  The post id that the resource is associated with or `global`.
	 *                             If `null`, {@link get_the_ID()} will be used.
	 * @param string     $type     The resource type (style|script). Default: `style`.
	 * @param string     $location Where the resource should be output (head|footer). Default: `head`.
	 */
	public function __construct( $owner, $slug, $post_id = null, $priority = 10, $location = 'head-late', $type = 'style' ) {
		$this->owner    = self::_validate_property( 'owner', $owner );
		$this->post_id  = self::_validate_property( 'post_id', $post_id ? $post_id : et_core_page_resource_get_the_ID() );

$this->type     = self::_validate_property( 'type', $type );
		$this->location = self::_validate_property( 'location', $location );

$this->write_file_location = $this->location;

$this->filename = sanitize_file_name( "et-{$this->owner}-{$slug}-{$post_id}" );
		$this->slug     = "{$this->filename}-cached-inline-{$this->type}s";

$this->data     = array();
		$this->priority = $priority;

self::startup();

$this->_initialize_resource();
	}

/**
	 * Activates the class
	 */
	public static function startup() {
		if ( null !== self::$_resources ) {
			// Class has already been initialized
			return;
		}

$time = (string) microtime( true );
		$time = str_replace( '.', '', $time );
		$rand = (string) mt_rand();

self::$_request_time = $time;
		self::$_request_id   = "{$time}-{$rand}";
		self::$_resources    = array();
		self::$data_utils    = new ET_Core_Data_Utils();

foreach ( self::$_OUTPUT_LOCATIONS as $location ) {
			self::$_resources_by_location[ $location ] = array();
		}

foreach( self::$_SCOPES as $scope ) {
			self::$_resources_by_scope[ $scope ] = array();
		}

self::$WP_CONTENT_DIR = self::$data_utils->normalize_path( WP_CONTENT_DIR );
		self::$_LOCK_FILE     = self::$_request_id . '~';

self::_register_callbacks();
		self::_setup_wp_filesystem();

self::$_can_write = et_core_cache_dir()->can_write;
	}

/**
	 * Updates our resource array in the database if needed.
	 */
	public static function shutdown() {
		if ( ! self::$_resources || ! self::$_can_write ) {
			return;
		}

// Remove any leftover temporary directories that belong to this request
		foreach ( self::$_TEMP_DIRS as $temp_directory ) {
			if ( file_exists( $temp_directory . '/' . self::$_LOCK_FILE ) ) {
				@self::$wpfs->delete( $temp_directory, true );
			}
		}

// Reset $_resources property; Mostly useful for unit test big request which needs to make
		// each test*() method act like it is different page request
		self::$_resources = null;

if ( et_()->WPFS()->exists( self::$WP_CONTENT_DIR . '/cache/et' ) ) {
			// Remove old cache directory
			et_()->WPFS()->rmdir( self::$WP_CONTENT_DIR . '/cache/et', true );
		}
	}

protected static function _assign_output_location( $location, $resource ) {
		$priority_existed = isset( self::$_resources_by_location[ $location ][ $resource->priority ] );

self::$_resources_by_location[ $location ][ $resource->priority ][ $resource->slug ] = $resource;

if ( ! $priority_existed ) {
			// We've added a new priority to the list, so put them back in sorted order.
			ksort( self::$_resources_by_location[ $location ], SORT_NUMERIC );
		}
	}

/**
	 * Enqueues static file for provided script resource.
	 *
	 * @param ET_Core_PageResource $resource
	 */
	protected static function _enqueue_script( $resource ) {
		$can_enqueue = 0 === did_action( 'wp_print_scripts' );

if ( $can_enqueue ) {
			wp_enqueue_script( $resource->slug, set_url_scheme( $resource->URL ), array(), ET_CORE_VERSION, true );
		} else {
			printf(
				'<script id="%1$s" src="%2$s"></script>', // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedScript
				esc_attr( $resource->slug ),
				esc_url( set_url_scheme( $resource->URL ) )
			);
		}

$resource->enqueued = true;
	}

/**
	 * Enqueues static file for provided style resource.
	 *
	 * @param ET_Core_PageResource $resource
	 */
	protected static function _enqueue_style( $resource ) {
		if ( 'footer' === self::$current_output_location ) {
			return;
		}

$can_enqueue = 0 === did_action( 'wp_print_styles' );

if ( $can_enqueue ) {
			wp_enqueue_style( $resource->slug, set_url_scheme( $resource->URL ) );
		} else {
			printf(
				'<link rel="stylesheet" id="%1$s" href="%2$s" onerror="%3$s" onload="%4$s" />', // phpcs:ignore WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet
				esc_attr( $resource->slug ),
				esc_url( set_url_scheme( $resource->URL ) ),
				et_core_esc_previously( self::$_onerror ),
				et_core_esc_previously( self::$_onload )
			);
		}

$resource->enqueued = true;
	}

/**
	 * Returns the next output location.
	 *
	 * @see self::$_OUTPUT_LOCATIONS
	 *
	 * @return string
	 */
	protected static function _get_next_output_location() {
		$current_index = array_search( self::$current_output_location, self::$_OUTPUT_LOCATIONS );

if ( false === $current_index || ! is_int( $current_index ) ) {
			ET_Core_Logger::error( '$current_output_location is invalid!' );
		}

$current_index += 1;

return self::$_OUTPUT_LOCATIONS[ $current_index ];
	}

/**
	 * Creates static resource files for an output location if needed.
	 *
	 * @param string $location {@link self::$_OUTPUT_LOCATIONS}
	 */
	protected static function _maybe_create_static_resources( $location ) {
		self::$current_output_location = $location;

$sorted_resources = self::get_resources_by_output_location( $location );

foreach ( $sorted_resources as $priority => $resources ) {
			foreach ( $resources as $slug => $resource ) {
				if ( $resource->write_file_location !== $location ) {
					// This resource's static file needs to be generated later on.
					self::_assign_output_location( $resource->write_file_location, $resource );
					continue;
				}

if ( ! self::$_can_write ) {
					// The reason we don't simply check this before looping through resources and
					// bail if it fails is because we need to perform the output location assignment
					// in the previous conditional regardless (otherwise builder styles will break).
					continue;
				}

if ( $resource->forced_inline || $resource->has_file() ) {
					continue;
				}

$data = $resource->get_data( 'file' );

if ( empty( $data ) && 'footer' !== $location ) {
					// This resource doesn't have any data yet so we'll assign it to the next output location.
					$next_location = self::_get_next_output_location();

$resource->set_output_location( $next_location );

continue;
				}

if ( empty( $data ) ) {
					continue;
				}

// Make sure directory exists.
				if ( ! self::$data_utils->ensure_directory_exists( $resource->BASE_DIR ) ) {
					self::$_can_write = false;
					return;
				}

$can_continue = true;

// Try to create a temporary directory which we'll use as a pseudo file lock
				if ( @mkdir( $resource->TEMP_DIR, 0755 ) ) {
					self::$_TEMP_DIRS[] = $resource->TEMP_DIR;

// Make sure another request doesn't delete our temp directory
					$lock_file = $resource->TEMP_DIR . '/' . self::$_LOCK_FILE;
					self::$wpfs->put_contents( $lock_file, '' );

// Create the static resource file
					if ( ! self::$wpfs->put_contents( $resource->PATH, $data, 0644 ) ) {
						// There's no point in continuing
						self::$_can_write = $can_continue = false;
					} else {
						// Remove the temporary directory
						self::$wpfs->delete( $resource->TEMP_DIR, true );
					}

} else if ( file_exists( $resource->TEMP_DIR ) ) {
					// The static resource file is currently being created by another request
					continue;
				} else {
					// Failed for some other reason. There's no point in continuing
					self::$_can_write = $can_continue = false;
					return;
				}

if ( ! $can_continue ) {
					return;
				}

if ( ! defined( 'DONOTCACHEPAGE' ) ) {
					define( 'DONOTCACHEPAGE', true );
				}
			}
		}
	}

/**
	 * Enqueues static files for an output location if available.
	 *
	 * @param string $location {@link self::$_OUTPUT_LOCATIONS}
	 */
	protected static function _maybe_enqueue_static_resources( $location ) {
		$sorted_resources = self::get_resources_by_output_location( $location );

foreach ( $sorted_resources as $priority => $resources ) {
			foreach ( $resources as $slug => $resource ) {
				if ( $resource->disabled ) {
					// Resource is disabled. Remove it from the queue.
					self::_unassign_output_location( $location, $resource );
					continue;
				}

if ( $resource->forced_inline || ! $resource->URL || ! $resource->has_file() ) {
					continue;
				}

if ( 'style' === $resource->type ) {
					self::_enqueue_style( $resource );
				} else if ( 'script' === $resource->type ) {
					self::_enqueue_script( $resource );
				}

if ( $resource->enqueued ) {
					self::_unassign_output_location( $location, $resource );
				}
			}
		}
	}

/**
	 * Outputs all non-enqueued resources for an output location inline.
	 *
	 * @param string $location {@link self::$_OUTPUT_LOCATIONS}
	 */
	protected static function _maybe_output_inline_resources( $location ) {
		$sorted_resources = self::get_resources_by_output_location( $location );

$data = $resource->get_data( 'inline' );

$same_write_file_location = $resource->write_file_location === $resource->location;

if ( empty( $data ) && 'footer' !== $location && $same_write_file_location ) {
					// This resource doesn't have any data yet so we'll assign it to the next output location.
					$next_location = self::_get_next_output_location();
					$resource->set_output_location( $next_location );
					continue;
				} else if ( empty( $data ) ) {
					continue;
				}

printf(
					'<%1$s id="%2$s">%3$s</%1$s>',
					esc_html( $resource->type ),
					esc_attr( $resource->slug ),
					et_core_esc_previously( wp_strip_all_tags( $data ) )
				);

if ( $same_write_file_location ) {
					// File wasn't created during this location's callback and it won't be created later
					$resource->inlined = true;
				}
			}
		}
	}

/**
	 * Registers necessary callbacks.
	 */
	protected static function _register_callbacks() {
		$class = 'ET_Core_PageResource';

// Output Location: head-early, right after theme styles have been enqueued.
		add_action( 'wp_enqueue_scripts', array( $class, 'head_early_output_cb' ), 11 );

// Output Location: head, right BEFORE the theme and wp's custom css.
		add_action( 'wp_head', array( $class, 'head_output_cb' ), 99 );

// Output Location: head-late, right AFTER the theme and wp's custom css.
		add_action( 'wp_head', array( $class, 'head_late_output_cb' ), 103 );

// Output Location: footer
		add_action( 'wp_footer', array( $class, 'footer_output_cb' ), 20 );

// Always delete cached resources for a post upon saving.
		add_action( 'save_post', array( $class, 'save_post_cb' ), 10, 3 );

// Always delete cached resources for theme customizer upon saving.
		add_action( 'customize_save_after', array( $class, 'customize_save_after_cb') );

// Add fallback callbacks (lol) to link/script tags
		add_filter( 'style_loader_tag', array( $class, 'link_and_script_tags_filter_cb' ), 999, 2 );
	}

/**
	 * Initializes the WPFilesystem class.
	 */
	protected static function _setup_wp_filesystem() {
		// The wpfs instance will always exists at this point because the cache dir class initializes it beforehand
		self::$wpfs = $GLOBALS['wp_filesystem'];
	}

/**
	 * Unassign a resource from an output location.
	 *
	 * @param string               $location {@link self::$_OUTPUT_LOCATIONS}
	 * @param ET_Core_PageResource $resource
	 */
	protected static function _unassign_output_location( $location, $resource ) {
		unset( self::$_resources_by_location[ $location ][ $resource->priority ][ $resource->slug ] );
	}

protected static function _validate_property( $property, $value ) {
		$valid_values = array(
			'location' => self::$_OUTPUT_LOCATIONS,
			'owner'    => self::$_OWNERS,
			'type'     => self::$_TYPES,
		);

switch( $property ) {
			case 'path':
				$value    = et_()->normalize_path( realpath( $value ) );
				$is_valid = et_()->starts_with( $value, et_core_cache_dir()->path );
				break;
			case 'url':
				$base_url = et_core_cache_dir()->url;
				$is_valid = et_()->starts_with( $value, set_url_scheme( $base_url, 'http' ) );
				$is_valid = $is_valid ? $is_valid : et_()->starts_with( $value, set_url_scheme( $base_url, 'https' ) );
				break;
			case 'post_id':
				$is_valid = 'global' === $value || 'all' === $value || is_numeric( $value );
				break;
			default:
				$is_valid = isset( $valid_values[ $property ] ) && in_array( $value, $valid_values[ $property ] );
				break;
		}

return $is_valid ? $value : '';
	}

/**
	 * Whether or not we are able to write to the filesystem.
	 *
	 * @return bool
	 */
	public static function can_write_to_filesystem() {
		return et_core_cache_dir()->can_write;
	}

/**
	 * Output Location: footer
	 * {@see 'wp_footer' (20) Allow third-party extensions some room to do what they do}
	 */
	public static function footer_output_cb() {
		self::_maybe_create_static_resources( 'footer' );
		self::_maybe_enqueue_static_resources( 'footer' );
		self::_maybe_output_inline_resources( 'footer' );
	}

/**
	 * Returns the absolute path to our cache directory.
	 *
	 * @since 4.0.8     Removed `$path_type` param b/c cache directory might not be located under wp-content.
	 * @since 3.0.52
	 *
	 * @return string
	 */
	public static function get_cache_directory() {
		return et_core_cache_dir()->path;
	}

/**
	 * Returns all current resources.
	 *
	 * @return array {@link self::$_resources}
	 */
	public static function get_resources() {
		return self::$_resources;
	}

/**
	 * Returns the current resources for the provided output location, sorted by priority.
	 *
	 * @param string $location The desired output location {@see self::$_OUTPUT_LOCATIONS}.
	 *
	 * @return array[] {
	 *
	 *     @type ET_Core_PageResource[] $priority {
	 *
	 *         @type ET_Core_PageResource $slug Resource.
	 *         ...
	 *     }
	 *     ...
	 * }
	 */
	public static function get_resources_by_output_location( $location ) {
		return self::$_resources_by_location[ $location ];
	}

/**
	 * Returns the current resources for the provided scope.
	 *
	 * @param string $scope The desired scope (post|global).
	 *
	 * @return ET_Core_PageResource[]
	 */
	public static function get_resources_by_scope( $scope ) {
		return self::$_resources_by_scope[ $scope ];
	}

/**
	 * Output Location: head-early
	 * {@see 'wp_enqueue_scripts' (11) Should run right after the theme enqueues its styles.}
	 */
	public static function head_early_output_cb() {
		self::_maybe_create_static_resources( 'head-early' );
		self::_maybe_enqueue_static_resources( 'head-early' );
		self::_maybe_output_inline_resources( 'head-early' );
	}

/**
	 * Output Location: head
	 * {@see 'wp_head' (99) Must run BEFORE the theme and WP's custom css callbacks.}
	 */
	public static function head_output_cb() {
		self::_maybe_create_static_resources( 'head' );
		self::_maybe_enqueue_static_resources( 'head' );
		self::_maybe_output_inline_resources( 'head' );
	}

/**
	 * Output Location: head-late
	 * {@see 'wp_head' (103) Must run AFTER the theme and WP's custom css callbacks.}
	 */
	public static function head_late_output_cb() {
		self::_maybe_create_static_resources( 'head-late' );
		self::_maybe_enqueue_static_resources( 'head-late' );
		self::_maybe_output_inline_resources( 'head-late' );
	}

/**
	 * Adds fallback handlers to the link and script tags of our page resources.
	 * {@see 'style_loader_tag'}
	 * {@see 'script_loader_tag'}
	 */
	public static function link_and_script_tags_filter_cb( $tag, $handle ) {
		if ( ! isset( self::$_resources[ $handle ] ) ) {
			return $tag;
		}

if ( function_exists( 'et_get_option' ) && 'off' === et_get_option( 'et_pb_static_css_file', 'on' ) ) {
			return $tag;
		}

/** @see ET_Core_SupportCenter::toggle_safe_mode */
		if ( et_core_is_safe_mode_active() ) {
			return $tag;
		}

$existing_onerror = "/(?<=onerror=')(.*?)(;?')/";
		$existing_onload  = "/(?<=onload=')(.*?)(;?')/"; // Internet Explorer :face_with_rolling_eyes:

$onerror_callback = self::$_onerror;
		$onload_callback  = self::$_onload;

$onerror_replacement = $onerror_callback . ';$1';
		$onload_replacement  = $onload_callback . ';$1';

$tag = preg_replace( $existing_onerror, $onerror_replacement, $tag, 1, $onerror_replaced_count );
		$tag = preg_replace( $existing_onload, $onload_replacement, $tag, 1, $onload_replaced_count );

if ( 1 === $onerror_replaced_count && 1 === $onload_replaced_count ) {
			return $tag;
		}

if ( 1 !== $onerror_replaced_count ) {
			$tag = str_replace( '/>', "onerror='{$onerror_callback}' />", $tag );
		}

if ( 1 !== $onload_replaced_count ) {
			$tag = str_replace( '/>', "onload='{$onload_callback}' />", $tag );
		}

return $tag;
	}

/**
	 * {@see 'customize_save_after'}
	 *
	 * @param WP_Customize_Manager $manager
	 */
	public static function customize_save_after_cb( $manager ) {
		self::remove_static_resources( 'all', 'all' );
	}

/**
	 * {@see 'save_post'}
	 *
	 * @param int     $post_id
	 * @param WP_Post $post
	 * @param bool    $update
	 */
	public static function save_post_cb( $post_id, $post, $update ) {
		if ( ! $update || ! function_exists( 'et_builder_enabled_for_post' ) ) {
			return;
		}

if ( ! et_builder_enabled_for_post( $post_id ) ) {
			return;
		}

self::remove_static_resources( $post_id, 'all' );
	}

/**
	 * Remove static resources for a post, or optionally all resources, if any exist.
	 *
	 * @param string|int $post_id
	 * @param string     $owner
	 */
	public static function remove_static_resources( $post_id, $owner = 'core', $force = false ) {
		if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
			return;
		}

if ( ! wp_doing_cron() && ! et_core_security_check_passed( 'edit_posts' ) ) {
			return;
		}

if ( ! self::can_write_to_filesystem() ) {
			return;
		}

if ( ! self::$data_utils ) {
			self::startup();
		}

$post_id = self::_validate_property( 'post_id', $post_id );
		$owner   = self::_validate_property( 'owner', $owner );

if ( '' === $owner || '' === $post_id ) {
			return;
		}

$_post_id = 'all' === $post_id ? '*' : $post_id;
		$_owner   = 'all' === $owner ? '*' : $owner;

$cache_dir = self::get_cache_directory();

$files = array_merge(
			(array) glob( "{$cache_dir}/et-{$_owner}-*" ),
			(array) glob( "{$cache_dir}/{$_post_id}/et-{$_owner}-*" ),
			(array) glob( "{$cache_dir}/*/et-{$_owner}-*-tb-{$_post_id}-*" ),
			(array) glob( "{$cache_dir}/*/et-{$_owner}-*-tb-for-{$_post_id}-*" )
		);

foreach( (array) $files as $file ) {
			$file = self::$data_utils->normalize_path( $file );

if ( ! et_()->starts_with( $file, $cache_dir ) ) {
				// File is not located inside cache directory so skip it.
				continue;
			}

if ( is_file( $file ) ) {
				self::$wpfs->delete( $file );
			}
		}

// Remove empty directories
		self::$data_utils->remove_empty_directories( $cache_dir );

// Clear cache managed by 3rd-party cache plugins
		$post_id = ! empty( $post_id ) && absint( $post_id ) > 0 ? $post_id : '';
		et_core_clear_wp_cache( $post_id );

// Set our DONOTCACHEPAGE file for the next request.
		self::$data_utils->ensure_directory_exists( $cache_dir );
		self::$wpfs->put_contents( $cache_dir . '/DONOTCACHEPAGE', '' );

if ( $force ) {
			delete_option( 'et_core_page_resource_remove_all' );
		}
	}

public static function wpfs() {
		if ( null !== self::$wpfs ) {
			return self::$wpfs;
		}

self::startup();

return self::$wpfs = et_core_cache_dir()->wpfs;
	}

protected function _initialize_resource() {
		if ( ! self::can_write_to_filesystem() ) {
			$this->BASE_DIR = $this->TEMP_DIR = $this->PATH = $this->URL = '';

$this->_register_resource();
			return;
		}

$file_extension = 'style' === $this->type ? '.min.css' : '.min.js';
		$path           = self::get_cache_directory();
		$url            = et_core_cache_dir()->url;

$files = glob( $path . "/{$this->post_id}/{$this->filename}-[0-9]*{$file_extension}" );

if ( $files ) {
			// Static resource file exists
			$file           = array_pop( $files );
			$this->PATH     = self::$data_utils->normalize_path( $file );
			$this->BASE_DIR = dirname( $this->PATH );
			$this->URL      = et_()->path( $url, $this->post_id, basename( $this->PATH ) );

if ( $files ) {
				// There are multiple files for this resource. Let's delete the extras.
				foreach ( $files as $extra_file ) {
					ET_Core_Logger::debug( 'Removing extra page resource file: ' . $extra_file );
					@self::$wpfs->delete( $extra_file );
				}
			}

} else {
			// Static resource file doesn't exist
			$time = self::$_request_time;

$url  .= "/{$this->post_id}/{$this->filename}-{$time}{$file_extension}";
			$path .= "/{$this->post_id}/{$this->filename}-{$time}{$file_extension}";

$this->BASE_DIR = self::$data_utils->normalize_path( dirname( $path ) );
			$this->TEMP_DIR = $this->BASE_DIR . "/{$this->slug}~";
			$this->PATH     = $path;
			$this->URL      = $url;
		}

$this->_register_resource();
	}

protected function _register_resource() {
		$this->enqueued = false;
		$this->inlined  = false;

$scope = 'global' === $this->post_id ? 'global' : 'post';

self::$_resources[ $this->slug ] = $this;

self::$_resources_by_scope[ $scope ][ $this->slug ] = $this;

self::_assign_output_location( $this->location, $this );
	}

public function get_data( $context ) {
		$result = '';

ksort( $this->data, SORT_NUMERIC );

/**
		 * Filters the resource's data array.
		 *
		 * @since 3.0.52
		 *
		 * @param array[]              $data {
		 *
		 *     @type string[] $priority Resource data.
		 *     ...
		 * }
		 * @param string               $context  Where the data will be used. Accepts 'inline', 'file'.
		 * @param ET_Core_PageResource $resource The resource instance.
		 */
		$resource_data = apply_filters( 'et_core_page_resource_get_data', $this->data, $context, $this );

foreach ( $resource_data as $priority => $data_part ) {
			foreach ( $data_part as $data ) {
				$result .= $data;
			}
		}

return $result;
	}

/**
	 * Whether or not a static resource exists on the filesystem for this instance.
	 *
	 * @return bool
	 */
	public function has_file() {
		if ( ! self::$wpfs || empty( $this->PATH ) || ! self::can_write_to_filesystem() ) {
			return false;
		}

return self::$wpfs->exists( $this->PATH );
	}

/**
	 * Set the resource's data.
	 *
	 * @param string $data
	 * @param int    $priority
	 */
	public function set_data( $data, $priority = 10 ) {
		if ( 'style' === $this->type ) {
			$data = et_core_data_utils_minify_css( $data );
			// Remove empty media queries
			//           @media   only..and  (feature:value)    { }
			$pattern = '/@media\s+([\w\s]+)?$[\w-]+:[\w\d-]+$\{\s*\}/';
			$data    = preg_replace( $pattern, '', $data );
		}

$this->data[ $priority ][] = trim( strip_tags( str_replace( '\n', '', $data ) ) );
	}

public function set_output_location( $location ) {
		if ( ! self::_validate_property( 'location', $location ) ) {
			return;
		}

$current_location = $this->location;

self::_unassign_output_location( $current_location, $this );
		self::_assign_output_location( $location, $this );

$this->location = $location;
	}

public function unregister_resource() {
		$scope = 'global' === $this->post_id ? 'global' : 'post';

unset( self::$_resources[ $this->slug ], self::$_resources_by_scope[ $scope ][ $this->slug ] );

self::_unassign_output_location( $this->location, $this );
	}
}

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