mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
837 lines
24 KiB
JavaScript
837 lines
24 KiB
JavaScript
"use strict";
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* Asynchronous front-end for OS.File.
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*
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* This front-end is meant to be imported from the main thread. In turn,
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* it spawns one worker (perhaps more in the future) and delegates all
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* disk I/O to this worker.
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*
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* Documentation note: most of the functions and methods in this module
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* return promises. For clarity, we denote as follows a promise that may resolve
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* with type |A| and some value |value| or reject with type |B| and some
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* reason |reason|
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* @resolves {A} value
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* @rejects {B} reason
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*/
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let EXPORTED_SYMBOLS = ["OS"];
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Components.utils.import("resource://gre/modules/osfile/osfile_shared_allthreads.jsm");
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let LOG = OS.Shared.LOG.bind(OS.Shared, "Controller");
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// A simple flag used to control debugging messages.
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// FIXME: Once this library has been battle-tested, this flag will
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// either be removed or replaced with a preference.
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const DEBUG = true;
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// The constructor for file errors.
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let OSError;
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if (OS.Constants.Win) {
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Components.utils.import("resource://gre/modules/osfile/osfile_win_allthreads.jsm");
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Components.utils.import("resource://gre/modules/osfile/ospath_win_back.jsm");
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OSError = OS.Shared.Win.Error;
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} else if (OS.Constants.libc) {
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Components.utils.import("resource://gre/modules/osfile/osfile_unix_allthreads.jsm");
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Components.utils.import("resource://gre/modules/osfile/ospath_unix_back.jsm");
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OSError = OS.Shared.Unix.Error;
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} else {
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throw new Error("I am neither under Windows nor under a Posix system");
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}
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let Type = OS.Shared.Type;
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// The library of promises.
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Components.utils.import("resource://gre/modules/commonjs/promise/core.js");
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/**
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* Return a shallow clone of the enumerable properties of an object
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*/
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let clone = function clone(object) {
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let result = {};
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for (let k in object) {
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result[k] = object[k];
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}
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return result;
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};
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/**
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* A shared constant used to normalize a set of options to nothing.
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*/
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const noOptions = {};
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/**
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* An implementation of queues (FIFO).
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*
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* The current implementation uses two arrays and runs in O(n * log(n)).
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* It is optimized for the case in which many items are enqueued sequentially.
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*/
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let Queue = function Queue() {
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// The array to which the following |push| operations will add elements.
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// If |null|, |this._pushing| will receive a new array.
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// @type {Array|null}
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this._pushing = null;
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// The array from which the following |pop| operations will remove elements.
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// If |null|, |this._popping| will receive |this._pushing|
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// @type {Array|null}
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this._popping = null;
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// The number of items in |this._popping| that have been popped already
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this._popindex = 0;
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};
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Queue.prototype = {
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/**
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* Push a new element
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*/
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push: function push(x) {
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if (!this._pushing) {
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this._pushing = [];
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}
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this._pushing.push({ value: x });
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},
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/**
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* Pop an element.
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*
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* If the queue is empty, raise |Error|.
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*/
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pop: function pop() {
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if (!this._popping) {
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if (!this._pushing) {
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throw new Error("Queue is empty");
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}
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this._popping = this._pushing;
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this._pushing = null;
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this._popindex = 0;
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}
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let result = this._popping[this._popindex];
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delete this._popping[this._popindex];
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++this._popindex;
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if (this._popindex >= this._popping.length) {
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this._popping = null;
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}
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return result.value;
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}
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};
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/**
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* An object responsible for dispatching messages to
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* a worker and routing the responses.
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*
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* In this implementation, the Scheduler uses only
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* one worker.
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*/
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let Scheduler = {
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/**
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* Instantiate the worker lazily.
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*/
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get _worker() {
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delete this._worker;
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let worker = new ChromeWorker("osfile_async_worker.js");
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let self = this;
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Object.defineProperty(this, "_worker", {value:
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worker
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});
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/**
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* Receive errors that are not instances of OS.File.Error, propagate
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* them to the listeners.
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*
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* The worker knows how to serialize errors that are instances
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* of |OS.File.Error|. These are treated by |worker.onmessage|.
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* However, for other errors, we rely on DOM's mechanism for
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* serializing errors, which transmits these errors through
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* |worker.onerror|.
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*
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* @param {Error} error Some JS error.
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*/
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worker.onerror = function onerror(error) {
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if (DEBUG) {
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LOG("Received uncaught error from worker", JSON.stringify(error.message), error.message);
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}
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error.preventDefault();
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let {deferred} = self._queue.pop();
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deferred.reject(error);
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};
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/**
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* Receive messages from the worker, propagate them to the listeners.
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*
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* Messages must have one of the following shapes:
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* - {ok: some_value} in case of success
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* - {fail: some_error} in case of error, where
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* some_error can be deserialized by
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* |OS.File.Error.fromMsg|
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*
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* Messages may also contain a field |id| to help
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* with debugging.
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*
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* @param {*} msg The message received from the worker.
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*/
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worker.onmessage = function onmessage(msg) {
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if (DEBUG) {
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LOG("Received message from worker", JSON.stringify(msg.data));
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}
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let handler = self._queue.pop();
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let deferred = handler.deferred;
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let data = msg.data;
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if (data.id != handler.id) {
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throw new Error("Internal error: expecting msg " + handler.id + ", " +
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" got " + data.id + ": " + JSON.stringify(msg.data));
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}
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if ("ok" in data) {
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deferred.resolve(data.ok);
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} else if ("fail" in data) {
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let error;
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try {
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error = OS.File.Error.fromMsg(data.fail);
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} catch (x) {
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LOG("Cannot decode OS.File.Error", data.fail, data.id);
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deferred.reject(x);
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return;
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}
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deferred.reject(error);
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} else {
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throw new Error("Message does not respect protocol: " +
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data.toSource());
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}
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};
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return worker;
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},
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/**
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* The queue of deferred, waiting for the completion of their
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* respective job by the worker.
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*
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* Each item in the list may contain an additional field |closure|,
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* used to store strong references to value that must not be
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* garbage-collected before the reply has been received (e.g.
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* arrays).
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*
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* @type {Queue<{deferred:deferred, closure:*=}>}
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*/
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_queue: new Queue(),
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/**
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* The number of the current message.
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*
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* Used for debugging purposes.
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*/
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_id: 0,
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/**
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* Post a message to a worker.
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*
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* @param {string} fun The name of the function to call.
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* @param array The contents of the message.
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* @param closure An object holding references that should not be
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* garbage-collected before the message treatment is complete.
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*
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* @return {promise}
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*/
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post: function post(fun, array, closure) {
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let deferred = Promise.defer();
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let id = ++this._id;
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let message = {fun: fun, args: array, id: id};
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if (DEBUG) {
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LOG("Posting message", JSON.stringify(message));
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}
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this._queue.push({deferred:deferred, closure: closure, id: id});
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this._worker.postMessage(message);
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if (DEBUG) {
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LOG("Message posted");
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}
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return deferred.promise;
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}
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};
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/**
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* Representation of a file, with asynchronous methods.
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*
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* @param {*} fdmsg The _message_ representing the platform-specific file
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* handle.
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*
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* @constructor
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*/
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let File = function File(fdmsg) {
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// FIXME: At the moment, |File| does not close on finalize
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// (see bug 777715)
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this._fdmsg = fdmsg;
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this._closeResult = null;
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this._closed = null;
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};
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File.prototype = {
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/**
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* Close a file asynchronously.
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*
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* This method is idempotent.
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*
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* @return {promise}
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* @resolves {null}
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* @rejects {OS.File.Error}
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*/
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close: function close() {
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if (this._fdmsg) {
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let msg = this._fdmsg;
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this._fdmsg = null;
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return this._closeResult =
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Scheduler.post("File_prototype_close", [msg], this);
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}
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return this._closeResult;
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},
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/**
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* Fetch information about the file.
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*
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* @return {promise}
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* @resolves {OS.File.Info} The latest information about the file.
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* @rejects {OS.File.Error}
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*/
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stat: function stat() {
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if (!this._fdmsg) {
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return Promise.reject(OSError.closed("accessing file"));
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}
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return Scheduler.post("File_prototype_stat", [this._fdmsg], this).then(
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File.Info.fromMsg
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);
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},
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/**
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* Read a number of bytes from the file and into a buffer.
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*
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* @param {ArrayBuffer|C void*} buffer This buffer will be modified
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* by another thread. Using this buffer before the |read| operation
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* has completed is a BAD IDEA.
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* @param {JSON} options
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*
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* @return {promise}
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* @resolves {number} The number of bytes effectively read.
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* @rejects {OS.File.Error}
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*/
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readTo: function readTo(buffer, options) {
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// If |buffer| is an ArrayBuffer and there is no |bytes| options,
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// we need to extract the |byteLength| now, as it will be lost
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// by communication
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if ("byteLength" in buffer && (!options || !"bytes" in options)) {
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options = clone(options || noOptions);
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options.bytes = buffer.byteLength;
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}
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// Note: Classic semantics for ArrayBuffer communication would imply
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// that posting the ArrayBuffer removes ownership from the sender
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// thread. Here, we use Type.voidptr_t.toMsg to ensure that these
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// semantics do not apply.
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return Scheduler.post("File_prototype_readTo",
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[this._fdmsg,
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Type.void_t.out_ptr.toMsg(buffer),
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options],
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buffer/*Ensure that |buffer| is not gc-ed*/);
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},
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/**
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* Write a number of bytes from the file and into a buffer.
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*
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* @param {ArrayBuffer|C void*} buffer This buffer will be accessed
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* by another thread. Using this buffer before the |write| operation
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* has completed is a BAD IDEA.
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*
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* @return {promise}
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* @resolves {number} The number of bytes effectively written.
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* @rejects {OS.File.Error}
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*/
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write: function write(buffer, options) {
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// If |buffer| is an ArrayBuffer and there is no |bytes| options,
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// we need to extract the |byteLength| now, as it will be lost
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// by communication
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if ("byteLength" in buffer && (!options || !"bytes" in options)) {
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options = clone(options || noOptions);
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options.bytes = buffer.byteLength;
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}
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// Note: Classic semantics for ArrayBuffer communication would imply
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// that posting the ArrayBuffer removes ownership from the sender
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// thread. Here, we use Type.voidptr_t.toMsg to ensure that these
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// semantics do not apply.
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return Scheduler.post("File_prototype_write",
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[this._fdmsg,
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Type.void_t.in_ptr.toMsg(buffer),
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options],
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buffer/*Ensure that |buffer| is not gc-ed*/);
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},
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/**
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* Read bytes from this file to a new buffer.
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*
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* @param {number=} bytes If unspecified, read all the remaining bytes from
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* this file. If specified, read |bytes| bytes, or less if the file does not
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* contain that many bytes.
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* @return {promise}
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* @resolves {buffer: ArrayBuffer, bytes: bytes} A buffer containing the
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* bytes read and the number of bytes read. Note that |buffer| may be
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* larger than the number of bytes actually read.
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*/
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read: function read(nbytes) {
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// FIXME: Once bug 720949 has landed, we should be able to simplify
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// considerably the implementation of |readAll|
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let self = this;
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let promise;
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if (nbytes != null) {
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promise = Promise.resolve(nbytes);
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} else {
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promise = this.stat();
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promise = promise.then(function withStat(stat) {
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return stat.size;
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});
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}
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let buffer;
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promise = promise.then(
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function withSize(size) {
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buffer = new ArrayBuffer(size);
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return self.readTo(buffer);
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}
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);
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promise = promise.then(
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function afterReadTo(bytes) {
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return {
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bytes: bytes,
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buffer: buffer
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};
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}
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);
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return promise;
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},
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/**
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* Return the current position in the file, as bytes.
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*
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* @return {promise}
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* @resolves {number} The current position in the file,
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* as a number of bytes since the start of the file.
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*/
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getPosition: function getPosition() {
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return Scheduler.post("File_prototype_getPosition",
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[this._fdmsg]);
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},
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/**
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* Set the current position in the file, as bytes.
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*
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* @param {number} pos A number of bytes.
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* @param {number} whence The reference position in the file,
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* which may be either POS_START (from the start of the file),
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* POS_END (from the end of the file) or POS_CUR (from the
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* current position in the file).
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*
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* @return {promise}
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*/
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setPosition: function setPosition(pos, whence) {
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return Scheduler.post("File_prototype_setPosition",
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[this._fdmsg, pos, whence]);
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}
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};
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/**
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* Open a file asynchronously.
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*
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* @return {promise}
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* @resolves {OS.File}
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* @rejects {OS.Error}
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*/
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File.open = function open(path, mode, options) {
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return Scheduler.post(
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"open", [Type.path.toMsg(path), mode, options],
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path
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).then(
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function onSuccess(msg) {
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return new File(msg);
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}
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);
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};
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/**
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* Get the information on the file.
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*
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* @return {promise}
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* @resolves {OS.File.Info}
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* @rejects {OS.Error}
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*/
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File.stat = function stat(path) {
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return Scheduler.post(
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"stat", [Type.path.toMsg(path)],
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path).then(File.Info.fromMsg);
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};
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/**
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* Fetch the current directory
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|
*
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* @return {promise}
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* @resolves {string} The current directory, as a path usable with OS.Path
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* @rejects {OS.Error}
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*/
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File.getCurrentDirectory = function getCurrentDirectory() {
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return Scheduler.post(
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"getCurrentDirectory"
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).then(Type.path.fromMsg);
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};
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|
|
/**
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* Change the current directory
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|
*
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|
* @param {string} path The OS-specific path to the current directory.
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|
* You should use the methods of OS.Path and the constants of OS.Constants.Path
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* to build OS-specific paths in a portable manner.
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*
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* @return {promise}
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* @resolves {null}
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* @rejects {OS.Error}
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*/
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|
File.setCurrentDirectory = function setCurrentDirectory(path) {
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return Scheduler.post(
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"setCurrentDirectory", [Type.path.toMsg(path)], path
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);
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};
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|
|
/**
|
|
* Copy a file to a destination.
|
|
*
|
|
* @param {string} sourcePath The platform-specific path at which
|
|
* the file may currently be found.
|
|
* @param {string} destPath The platform-specific path at which the
|
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* file should be copied.
|
|
* @param {*=} options An object which may contain the following fields:
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*
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|
* @option {bool} noOverwrite - If true, this function will fail if
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* a file already exists at |destPath|. Otherwise, if this file exists,
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* it will be erased silently.
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*
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* @rejects {OS.File.Error} In case of any error.
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*
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|
* General note: The behavior of this function is defined only when
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|
* it is called on a single file. If it is called on a directory, the
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* behavior is undefined and may not be the same across all platforms.
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|
*
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|
* General note: The behavior of this function with respect to metadata
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|
* is unspecified. Metadata may or may not be copied with the file. The
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* behavior may not be the same across all platforms.
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|
*/
|
|
File.copy = function copy(sourcePath, destPath, options) {
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|
return Scheduler.post("copy", [Type.path.toMsg(sourcePath),
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Type.path.toMsg(destPath), options], [sourcePath, destPath]);
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|
};
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|
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/**
|
|
* Move a file to a destination.
|
|
*
|
|
* @param {string} sourcePath The platform-specific path at which
|
|
* the file may currently be found.
|
|
* @param {string} destPath The platform-specific path at which the
|
|
* file should be moved.
|
|
* @param {*=} options An object which may contain the following fields:
|
|
*
|
|
* @option {bool} noOverwrite - If set, this function will fail if
|
|
* a file already exists at |destPath|. Otherwise, if this file exists,
|
|
* it will be erased silently.
|
|
*
|
|
* @returns {Promise}
|
|
* @rejects {OS.File.Error} In case of any error.
|
|
*
|
|
* General note: The behavior of this function is defined only when
|
|
* it is called on a single file. If it is called on a directory, the
|
|
* behavior is undefined and may not be the same across all platforms.
|
|
*
|
|
* General note: The behavior of this function with respect to metadata
|
|
* is unspecified. Metadata may or may not be moved with the file. The
|
|
* behavior may not be the same across all platforms.
|
|
*/
|
|
File.move = function move(sourcePath, destPath, options) {
|
|
return Scheduler.post("move", [Type.path.toMsg(sourcePath),
|
|
Type.path.toMsg(destPath), options], [sourcePath, destPath]);
|
|
};
|
|
|
|
/**
|
|
* Remove an empty directory.
|
|
*
|
|
* @param {string} path The name of the directory to remove.
|
|
* @param {*=} options Additional options.
|
|
* - {bool} ignoreAbsent If |true|, do not fail if the
|
|
* directory does not exist yet.
|
|
*/
|
|
File.removeEmptyDir = function removeEmptyDir(path, options) {
|
|
return Scheduler.post("removeEmptyDir",
|
|
[Type.path.toMsg(path), options], path);
|
|
};
|
|
|
|
/**
|
|
* Remove an existing file.
|
|
*
|
|
* @param {string} path The name of the file.
|
|
*/
|
|
File.remove = function remove(path) {
|
|
return Scheduler.post("remove",
|
|
[Type.path.toMsg(path)]);
|
|
};
|
|
|
|
|
|
|
|
/**
|
|
* Create a directory.
|
|
*
|
|
* @param {string} path The name of the directory.
|
|
* @param {*=} options Additional options.
|
|
* Implementations may interpret the following fields:
|
|
*
|
|
* - {C pointer} winSecurity If specified, security attributes
|
|
* as per winapi function |CreateDirectory|. If unspecified,
|
|
* use the default security descriptor, inherited from the
|
|
* parent directory.
|
|
*/
|
|
File.makeDir = function makeDir(path, options) {
|
|
return Scheduler.post("makeDir",
|
|
[Type.path.toMsg(path), options], path);
|
|
};
|
|
|
|
/**
|
|
* Return the contents of a file
|
|
*
|
|
* @param {string} path The path to the file.
|
|
* @param {number=} bytes Optionally, an upper bound to the number of bytes
|
|
* to read.
|
|
*
|
|
* @resolves {{buffer: ArrayBuffer, bytes: number}} A buffer holding the bytes
|
|
* and the number of bytes read from the file.
|
|
*/
|
|
File.read = function read(path, bytes) {
|
|
return Scheduler.post("read",
|
|
[Type.path.toMsg(path), bytes], path);
|
|
};
|
|
|
|
/**
|
|
* Write a file, atomically.
|
|
*
|
|
* By opposition to a regular |write|, this operation ensures that,
|
|
* until the contents are fully written, the destination file is
|
|
* not modified.
|
|
*
|
|
* Important note: In the current implementation, option |tmpPath|
|
|
* is required. This requirement should disappear as part of bug 793660.
|
|
*
|
|
* @param {string} path The path of the file to modify.
|
|
* @param {ArrayByffer} buffer A buffer containing the bytes to write.
|
|
* @param {number} bytes The number of bytes to write.
|
|
* @param {*=} options Optionally, an object determining the behavior
|
|
* of this function. This object may contain the following fields:
|
|
* - {number} offset The offset in |buffer| at which to start extracting
|
|
* data
|
|
* - {string} tmpPath The path at which to write the temporary file.
|
|
*
|
|
* @return {number} The number of bytes actually written.
|
|
*/
|
|
File.writeAtomic = function writeAtomic(path, buffer, options) {
|
|
// Copy |options| to avoid modifying the original object
|
|
options = clone(options || noOptions);
|
|
// As options.tmpPath is a path, we need to encode it as |Type.path| message
|
|
if ("tmpPath" in options) {
|
|
options.tmpPath = Type.path.toMsg(options.tmpPath);
|
|
};
|
|
if ("byteLength" in buffer && (!("bytes" in options))) {
|
|
options.bytes = buffer.byteLength;
|
|
};
|
|
return Scheduler.post("writeAtomic",
|
|
[Type.path.toMsg(path),
|
|
Type.void_t.in_ptr.toMsg(buffer),
|
|
options], [options, buffer]);
|
|
};
|
|
|
|
/**
|
|
* Information on a file, as returned by OS.File.stat or
|
|
* OS.File.prototype.stat
|
|
*
|
|
* @constructor
|
|
*/
|
|
File.Info = function Info(value) {
|
|
return value;
|
|
};
|
|
File.Info.fromMsg = function fromMsg(value) {
|
|
return new File.Info(value);
|
|
};
|
|
|
|
/**
|
|
* Iterate asynchronously through a directory
|
|
*
|
|
* @constructor
|
|
*/
|
|
let DirectoryIterator = function DirectoryIterator(path, options) {
|
|
/**
|
|
* Open the iterator on the worker thread
|
|
*
|
|
* @type {Promise}
|
|
* @resolves {*} A message accepted by the methods of DirectoryIterator
|
|
* in the worker thread
|
|
* @rejects {StopIteration} If all entries have already been visited
|
|
* or the iterator has been closed.
|
|
*/
|
|
this._itmsg = Scheduler.post(
|
|
"new_DirectoryIterator", [Type.path.toMsg(path), options],
|
|
path
|
|
);
|
|
this._isClosed = false;
|
|
};
|
|
DirectoryIterator.prototype = {
|
|
/**
|
|
* Get the next entry in the directory.
|
|
*
|
|
* @return {Promise}
|
|
* @resolves {OS.File.Entry}
|
|
* @rejects {StopIteration} If all entries have already been visited.
|
|
*/
|
|
next: function next() {
|
|
let self = this;
|
|
let promise = this._itmsg;
|
|
|
|
// Get the iterator, call _next
|
|
promise = promise.then(
|
|
function withIterator(iterator) {
|
|
return self._next(iterator);
|
|
});
|
|
|
|
return promise;
|
|
},
|
|
/**
|
|
* Get several entries at once.
|
|
*
|
|
* @param {number=} length If specified, the number of entries
|
|
* to return. If unspecified, return all remaining entries.
|
|
* @return {Promise}
|
|
* @resolves {Array} An array containing the |length| next entries.
|
|
*/
|
|
nextBatch: function nextBatch(size) {
|
|
if (this._isClosed) {
|
|
return Promise.resolve([]);
|
|
}
|
|
let promise = this._itmsg;
|
|
promise = promise.then(
|
|
function withIterator(iterator) {
|
|
return Scheduler.post("DirectoryIterator_prototype_nextBatch", [iterator, size]);
|
|
});
|
|
promise = promise.then(
|
|
function withEntries(array) {
|
|
return array.map(DirectoryIterator.Entry.fromMsg);
|
|
});
|
|
return promise;
|
|
},
|
|
/**
|
|
* Apply a function to all elements of the directory sequentially.
|
|
*
|
|
* @param {Function} cb This function will be applied to all entries
|
|
* of the directory. It receives as arguments
|
|
* - the OS.File.Entry corresponding to the entry;
|
|
* - the index of the entry in the enumeration;
|
|
* - the iterator itself - return |iterator.close()| to stop the loop.
|
|
*
|
|
* If the callback returns a promise, iteration waits until the
|
|
* promise is resolved before proceeding.
|
|
*
|
|
* @return {Promise} A promise resolved once the loop has reached
|
|
* its end.
|
|
*/
|
|
forEach: function forEach(cb, options) {
|
|
if (this._isClosed) {
|
|
return Promise.resolve();
|
|
}
|
|
|
|
let self = this;
|
|
let position = 0;
|
|
let iterator;
|
|
|
|
// Grab iterator
|
|
let promise = this._itmsg.then(
|
|
function(aIterator) {
|
|
iterator = aIterator;
|
|
}
|
|
);
|
|
|
|
// Then iterate
|
|
let loop = function loop() {
|
|
if (self._isClosed) {
|
|
return Promise.resolve();
|
|
}
|
|
return self._next(iterator).then(
|
|
function onSuccess(value) {
|
|
return Promise.resolve(cb(value, position++, self)).then(loop);
|
|
},
|
|
function onFailure(reason) {
|
|
if (reason == StopIteration) {
|
|
return;
|
|
}
|
|
throw reason;
|
|
}
|
|
);
|
|
};
|
|
|
|
return promise.then(loop);
|
|
},
|
|
/**
|
|
* Auxiliary method: fetch the next item
|
|
*
|
|
* @rejects {StopIteration} If all entries have already been visited
|
|
* or the iterator has been closed.
|
|
*/
|
|
_next: function _next(iterator) {
|
|
if (this._isClosed) {
|
|
LOG("DirectoryIterator._next", "closed");
|
|
return this._itmsg;
|
|
}
|
|
let self = this;
|
|
let promise = Scheduler.post("DirectoryIterator_prototype_next", [iterator]);
|
|
promise = promise.then(
|
|
DirectoryIterator.Entry.fromMsg,
|
|
function onReject(reason) {
|
|
// If the exception is |StopIteration| (which we may determine only
|
|
// from its message...) we need to stop the iteration.
|
|
if (!(reason instanceof WorkerErrorEvent && reason.message == "uncaught exception: [object StopIteration]")) {
|
|
// Any exception other than StopIteration should be propagated as such
|
|
throw reason;
|
|
}
|
|
self.close();
|
|
throw StopIteration;
|
|
});
|
|
return promise;
|
|
},
|
|
/**
|
|
* Close the iterator
|
|
*/
|
|
close: function close() {
|
|
if (this._isClosed) {
|
|
return;
|
|
}
|
|
this._isClosed = true;
|
|
let self = this;
|
|
this._itmsg.then(
|
|
function withIterator(iterator) {
|
|
self._itmsg = Promise.reject(StopIteration);
|
|
return Scheduler.post("DirectoryIterator_prototype_close", [iterator]);
|
|
}
|
|
);
|
|
}
|
|
};
|
|
|
|
DirectoryIterator.Entry = function Entry(value) {
|
|
return value;
|
|
};
|
|
DirectoryIterator.Entry.fromMsg = function fromMsg(value) {
|
|
return new DirectoryIterator.Entry(value);
|
|
};
|
|
|
|
// Constants
|
|
Object.defineProperty(File, "POS_START", {value: OS.Shared.POS_START});
|
|
Object.defineProperty(File, "POS_CURRENT", {value: OS.Shared.POS_CURRENT});
|
|
Object.defineProperty(File, "POS_END", {value: OS.Shared.POS_END});
|
|
|
|
OS.File = File;
|
|
OS.File.Error = OSError;
|
|
OS.File.DirectoryIterator = DirectoryIterator;
|