DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (1b78230f1e90)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643
// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";

var EXPORTED_SYMBOLS = ["ReaderMode"];

// Constants for telemetry.
const DOWNLOAD_SUCCESS = 0;
const DOWNLOAD_ERROR_XHR = 1;
const DOWNLOAD_ERROR_NO_DOC = 2;

const PARSE_SUCCESS = 0;
const PARSE_ERROR_TOO_MANY_ELEMENTS = 1;
const PARSE_ERROR_WORKER = 2;
const PARSE_ERROR_NO_ARTICLE = 3;

// Class names to preserve in the readerized output. We preserve these class
// names so that rules in aboutReader.css can match them.
const CLASSES_TO_PRESERVE = [
  "caption",
  "emoji",
  "hidden",
  "invisble",
  "sr-only",
  "visually-hidden",
  "visuallyhidden",
  "wp-caption",
  "wp-caption-text",
  "wp-smiley",
];

ChromeUtils.import("resource://gre/modules/Services.jsm");
ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");

XPCOMUtils.defineLazyGlobalGetters(this, ["XMLHttpRequest", "XMLSerializer"]);

ChromeUtils.defineModuleGetter(this, "CommonUtils", "resource://services-common/utils.js");
ChromeUtils.defineModuleGetter(this, "EventDispatcher", "resource://gre/modules/Messaging.jsm");
ChromeUtils.defineModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
ChromeUtils.defineModuleGetter(this, "ReaderWorker", "resource://gre/modules/reader/ReaderWorker.jsm");
ChromeUtils.defineModuleGetter(this, "LanguageDetector", "resource:///modules/translation/LanguageDetector.jsm");

XPCOMUtils.defineLazyGetter(this, "Readability", function() {
  let scope = {};
  scope.dump = this.dump;
  Services.scriptloader.loadSubScript("resource://gre/modules/reader/Readability.js", scope);
  return scope.Readability;
});

const gIsFirefoxDesktop = Services.appinfo.ID == "{ec8030f7-c20a-464f-9b0e-13a3a9e97384}";

var ReaderMode = {
  // Version of the cache schema.
  CACHE_VERSION: 1,

  DEBUG: 0,

  // Don't try to parse the page if it has too many elements (for memory and
  // performance reasons)
  get maxElemsToParse() {
    delete this.parseNodeLimit;

    Services.prefs.addObserver("reader.parse-node-limit", this);
    return this.parseNodeLimit = Services.prefs.getIntPref("reader.parse-node-limit");
  },

  get isEnabledForParseOnLoad() {
    delete this.isEnabledForParseOnLoad;

    // Listen for future pref changes.
    Services.prefs.addObserver("reader.parse-on-load.", this);

    return this.isEnabledForParseOnLoad = this._getStateForParseOnLoad();
  },

  _getStateForParseOnLoad() {
    let isEnabled = Services.prefs.getBoolPref("reader.parse-on-load.enabled");
    let isForceEnabled = Services.prefs.getBoolPref("reader.parse-on-load.force-enabled");
    return isForceEnabled || isEnabled;
  },

  observe(aMessage, aTopic, aData) {
    switch (aTopic) {
      case "nsPref:changed":
        if (aData.startsWith("reader.parse-on-load.")) {
          this.isEnabledForParseOnLoad = this._getStateForParseOnLoad();
        } else if (aData === "reader.parse-node-limit") {
          this.parseNodeLimit = Services.prefs.getIntPref(aData);
        }
        break;
    }
  },

  /**
   * Enter the reader mode by going forward one step in history if applicable,
   * if not, append the about:reader page in the history instead.
   */
  enterReaderMode(docShell, win) {
    let url = win.document.location.href;
    let readerURL = "about:reader?url=" + encodeURIComponent(url);
    let webNav = docShell.QueryInterface(Ci.nsIWebNavigation);
    let sh = webNav.sessionHistory;
    if (webNav.canGoForward) {
      let forwardEntry = sh.legacySHistory.getEntryAtIndex(sh.index + 1, false);
      let forwardURL = forwardEntry.URI.spec;
      if (forwardURL && (forwardURL == readerURL || !readerURL)) {
        webNav.goForward();
        return;
      }
    }

    win.document.location = readerURL;
  },

  /**
   * Exit the reader mode by going back one step in history if applicable,
   * if not, append the original page in the history instead.
   */
  leaveReaderMode(docShell, win) {
    let url = win.document.location.href;
    let originalURL = this.getOriginalUrl(url);
    let webNav = docShell.QueryInterface(Ci.nsIWebNavigation);
    let sh = webNav.sessionHistory;
    if (webNav.canGoBack) {
      let prevEntry = sh.legacySHistory.getEntryAtIndex(sh.index - 1, false);
      let prevURL = prevEntry.URI.spec;
      if (prevURL && (prevURL == originalURL || !originalURL)) {
        webNav.goBack();
        return;
      }
    }

    let referrerURI, principal;
    try {
      referrerURI = Services.io.newURI(url);
      principal = Services.scriptSecurityManager.createCodebasePrincipal(
        referrerURI, win.document.nodePrincipal.originAttributes);
    } catch (e) {
      Cu.reportError(e);
      return;
    }
    let flags = webNav.LOAD_FLAGS_DISALLOW_INHERIT_PRINCIPAL;
    webNav.loadURI(originalURL, flags, referrerURI, null, null, principal);
  },

  /**
   * Returns original URL from an about:reader URL.
   *
   * @param url An about:reader URL.
   * @return The original URL for the article, or null if we did not find
   *         a properly formatted about:reader URL.
   */
  getOriginalUrl(url) {
    if (!url.startsWith("about:reader?")) {
      return null;
    }

    let outerHash = "";
    try {
      let uriObj = Services.io.newURI(url);
      url = uriObj.specIgnoringRef;
      outerHash = uriObj.ref;
    } catch (ex) { /* ignore, use the raw string */ }

    let searchParams = new URLSearchParams(url.substring("about:reader?".length));
    if (!searchParams.has("url")) {
      return null;
    }
    let originalUrl = searchParams.get("url");
    if (outerHash) {
      try {
        let uriObj = Services.io.newURI(originalUrl);
        uriObj = Services.io.newURI("#" + outerHash, null, uriObj);
        originalUrl = uriObj.spec;
      } catch (ex) {}
    }
    return originalUrl;
  },

  getOriginalUrlObjectForDisplay(url) {
    let originalUrl = this.getOriginalUrl(url);
    if (originalUrl) {
      let uriObj;
      try {
        uriObj = Services.uriFixup.createFixupURI(originalUrl, Services.uriFixup.FIXUP_FLAG_NONE);
      } catch (ex) {
        return null;
      }
      try {
        return Services.uriFixup.createExposableURI(uriObj);
      } catch (ex) {
        return null;
      }
    }
    return null;
  },

  /**
   * Decides whether or not a document is reader-able without parsing the whole thing.
   *
   * @param doc A document to parse.
   * @return boolean Whether or not we should show the reader mode button.
   */
  isProbablyReaderable(doc) {
    // Only care about 'real' HTML documents:
    if (doc.mozSyntheticDocument || !(doc instanceof doc.defaultView.HTMLDocument)) {
      return false;
    }

    let uri = Services.io.newURI(doc.location.href);
    if (!this._shouldCheckUri(uri)) {
      return false;
    }

    let utils = this.getUtilsForWin(doc.defaultView);
    // We pass in a helper function to determine if a node is visible, because
    // it uses gecko APIs that the engine-agnostic readability code can't rely
    // upon.
    return new Readability(doc).isProbablyReaderable(this.isNodeVisible.bind(this, utils));
  },

  isNodeVisible(utils, node) {
    let bounds = utils.getBoundsWithoutFlushing(node);
    return bounds.height > 0 && bounds.width > 0;
  },

  getUtilsForWin(win) {
    return win.windowUtils;
  },

  /**
   * Gets an article from a loaded browser's document. This method will not attempt
   * to parse certain URIs (e.g. about: URIs).
   *
   * @param doc A document to parse.
   * @return {Promise}
   * @resolves JS object representing the article, or null if no article is found.
   */
  parseDocument(doc) {
    if (!this._shouldCheckUri(doc.documentURIObject) || !this._shouldCheckUri(doc.baseURIObject, true)) {
      this.log("Reader mode disabled for URI");
      return null;
    }

    return this._readerParse(doc);
  },

  /**
   * Downloads and parses a document from a URL.
   *
   * @param url URL to download and parse.
   * @return {Promise}
   * @resolves JS object representing the article, or null if no article is found.
   */
  async downloadAndParseDocument(url) {
    let doc = await this._downloadDocument(url);
    if (!doc) {
      return null;
    }
    if (!this._shouldCheckUri(doc.documentURIObject) || !this._shouldCheckUri(doc.baseURIObject, true)) {
      this.log("Reader mode disabled for URI");
      return null;
    }

    return this._readerParse(doc);
  },

  _downloadDocument(url) {
    try {
      if (!this._shouldCheckUri(Services.io.newURI(url))) {
        return null;
      }
    } catch (ex) {
      Cu.reportError(new Error(`Couldn't create URI from ${url} to download: ${ex}`));
      return null;
    }
    let histogram = Services.telemetry.getHistogramById("READER_MODE_DOWNLOAD_RESULT");
    return new Promise((resolve, reject) => {
      let xhr = new XMLHttpRequest();
      xhr.open("GET", url, true);
      xhr.onerror = evt => reject(evt.error);
      xhr.responseType = "document";
      xhr.onload = evt => {
        if (xhr.status !== 200) {
          reject("Reader mode XHR failed with status: " + xhr.status);
          histogram.add(DOWNLOAD_ERROR_XHR);
          return;
        }

        let doc = xhr.responseXML;
        if (!doc) {
          reject("Reader mode XHR didn't return a document");
          histogram.add(DOWNLOAD_ERROR_NO_DOC);
          return;
        }

        // Manually follow a meta refresh tag if one exists.
        let meta = doc.querySelector("meta[http-equiv=refresh]");
        if (meta) {
          let content = meta.getAttribute("content");
          if (content) {
            let urlIndex = content.toUpperCase().indexOf("URL=");
            if (urlIndex > -1) {
              let baseURI = Services.io.newURI(url);
              let newURI = Services.io.newURI(content.substring(urlIndex + 4), null, baseURI);
              let newURL = newURI.spec;
              let ssm = Services.scriptSecurityManager;
              let flags = ssm.LOAD_IS_AUTOMATIC_DOCUMENT_REPLACEMENT |
                          ssm.DISALLOW_INHERIT_PRINCIPAL;
              try {
                ssm.checkLoadURIStrWithPrincipal(doc.nodePrincipal, newURL, flags);
              } catch (ex) {
                let errorMsg = "Reader mode disallowed meta refresh (reason: " + ex + ").";

                if (Services.prefs.getBoolPref("reader.errors.includeURLs"))
                  errorMsg += " Refresh target URI: '" + newURL + "'.";
                reject(errorMsg);
                return;
              }
              // Otherwise, pass an object indicating our new URL:
              if (!baseURI.equalsExceptRef(newURI)) {
                reject({newURL});
                return;
              }
            }
          }
        }
        let responseURL = xhr.responseURL;
        let givenURL = url;
        // Convert these to real URIs to make sure the escaping (or lack
        // thereof) is identical:
        try {
          responseURL = Services.io.newURI(responseURL).specIgnoringRef;
        } catch (ex) { /* Ignore errors - we'll use what we had before */ }
        try {
          givenURL = Services.io.newURI(givenURL).specIgnoringRef;
        } catch (ex) { /* Ignore errors - we'll use what we had before */ }

        if (responseURL != givenURL) {
          // We were redirected without a meta refresh tag.
          // Force redirect to the correct place:
          reject({newURL: xhr.responseURL});
          return;
        }
        resolve(doc);
        histogram.add(DOWNLOAD_SUCCESS);
      };
      xhr.send();
    });
  },


  /**
   * Retrieves an article from the cache given an article URI.
   *
   * @param url The article URL.
   * @return {Promise}
   * @resolves JS object representing the article, or null if no article is found.
   * @rejects OS.File.Error
   */
  async getArticleFromCache(url) {
    let path = this._toHashedPath(url);
    try {
      let array = await OS.File.read(path);
      return JSON.parse(new TextDecoder().decode(array));
    } catch (e) {
      if (!(e instanceof OS.File.Error) || !e.becauseNoSuchFile)
        throw e;
      return null;
    }
  },

  /**
   * Stores an article in the cache.
   *
   * @param article JS object representing article.
   * @return {Promise}
   * @resolves When the article is stored.
   * @rejects OS.File.Error
   */
  async storeArticleInCache(article) {
    let array = new TextEncoder().encode(JSON.stringify(article));
    let path = this._toHashedPath(article.url);
    await this._ensureCacheDir();
    return OS.File.writeAtomic(path, array, { tmpPath: path + ".tmp" })
      .then(success => {
        OS.File.stat(path).then(info => {
          return EventDispatcher.instance.sendRequest({
            type: "Reader:AddedToCache",
            url: article.url,
            size: info.size,
            path,
          });
        });
      });
  },

  /**
   * Removes an article from the cache given an article URI.
   *
   * @param url The article URL.
   * @return {Promise}
   * @resolves When the article is removed.
   * @rejects OS.File.Error
   */
  async removeArticleFromCache(url) {
    let path = this._toHashedPath(url);
    await OS.File.remove(path);
  },

  log(msg) {
    if (this.DEBUG)
      dump("Reader: " + msg);
  },

  _blockedHosts: [
    "amazon.com",
    "github.com",
    "mail.google.com",
    "pinterest.com",
    "reddit.com",
    "twitter.com",
    "youtube.com",
  ],

  _shouldCheckUri(uri, isBaseUri = false) {
    if (!(uri.schemeIs("http") || uri.schemeIs("https"))) {
      this.log("Not parsing URI scheme: " + uri.scheme);
      return false;
    }

    try {
      uri.QueryInterface(Ci.nsIURL);
    } catch (ex) {
      // If this doesn't work, presumably the URL is not well-formed or something
      return false;
    }
    // Sadly, some high-profile pages have false positives, so bail early for those:
    let asciiHost = uri.asciiHost;
    if (!isBaseUri && this._blockedHosts.some(blockedHost => asciiHost.endsWith(blockedHost))) {
      return false;
    }

    if (!isBaseUri && (!uri.filePath || uri.filePath == "/")) {
      this.log("Not parsing home page: " + uri.spec);
      return false;
    }

    return true;
  },

  /**
   * Attempts to parse a document into an article. Heavy lifting happens
   * in readerWorker.js.
   *
   * @param doc The document to parse.
   * @return {Promise}
   * @resolves JS object representing the article, or null if no article is found.
   */
  async _readerParse(doc) {
    let histogram = Services.telemetry.getHistogramById("READER_MODE_PARSE_RESULT");
    if (this.parseNodeLimit) {
      let numTags = doc.getElementsByTagName("*").length;
      if (numTags > this.parseNodeLimit) {
        this.log("Aborting parse for " + doc.baseURIObject.spec + "; " + numTags + " elements found");
        histogram.add(PARSE_ERROR_TOO_MANY_ELEMENTS);
        return null;
      }
    }

    // Fetch this here before we send `doc` off to the worker thread, as later on the
    // document might be nuked but we will still want the URI.
    let {documentURI} = doc;

    let uriParam = {
      spec: doc.baseURIObject.spec,
      host: doc.baseURIObject.host,
      prePath: doc.baseURIObject.prePath,
      scheme: doc.baseURIObject.scheme,
      pathBase: Services.io.newURI(".", null, doc.baseURIObject).spec,
    };

    let serializer = new XMLSerializer();
    let serializedDoc = serializer.serializeToString(doc);

    let options = {
      classesToPreserve: CLASSES_TO_PRESERVE,
    };

    let article = null;
    try {
      article = await ReaderWorker.post("parseDocument", [uriParam, serializedDoc, options]);
    } catch (e) {
      Cu.reportError("Error in ReaderWorker: " + e);
      histogram.add(PARSE_ERROR_WORKER);
    }

    // Explicitly null out doc to make it clear it might not be available from this
    // point on.
    doc = null;

    if (!article) {
      this.log("Worker did not return an article");
      histogram.add(PARSE_ERROR_NO_ARTICLE);
      return null;
    }

    // Readability returns a URI object based on the baseURI, but we only care
    // about the original document's URL from now on. This also avoids spoofing
    // attempts where the baseURI doesn't match the domain of the documentURI
    article.url = documentURI;
    delete article.uri;

    let flags = Ci.nsIDocumentEncoder.OutputSelectionOnly | Ci.nsIDocumentEncoder.OutputAbsoluteLinks;
    article.title = Cc["@mozilla.org/parserutils;1"].getService(Ci.nsIParserUtils)
                                                    .convertToPlainText(article.title, flags, 0);
    if (gIsFirefoxDesktop) {
      await this._assignLanguage(article);
      this._maybeAssignTextDirection(article);
    }

    this._assignReadTime(article);

    histogram.add(PARSE_SUCCESS);
    return article;
  },

  get _cryptoHash() {
    delete this._cryptoHash;
    return this._cryptoHash = Cc["@mozilla.org/security/hash;1"].createInstance(Ci.nsICryptoHash);
  },

  get _unicodeConverter() {
    delete this._unicodeConverter;
    this._unicodeConverter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
                              .createInstance(Ci.nsIScriptableUnicodeConverter);
    this._unicodeConverter.charset = "utf8";
    return this._unicodeConverter;
  },

  /**
   * Calculate the hashed path for a stripped article URL.
   *
   * @param url The article URL. This should have referrers removed.
   * @return The file path to the cached article.
   */
  _toHashedPath(url) {
    let value = this._unicodeConverter.convertToByteArray(url);
    this._cryptoHash.init(this._cryptoHash.MD5);
    this._cryptoHash.update(value, value.length);

    let hash = CommonUtils.encodeBase32(this._cryptoHash.finish(false));
    let fileName = hash.substring(0, hash.indexOf("=")) + ".json";
    return OS.Path.join(OS.Constants.Path.profileDir, "readercache", fileName);
  },

  /**
   * Ensures the cache directory exists.
   *
   * @return Promise
   * @resolves When the cache directory exists.
   * @rejects OS.File.Error
   */
  _ensureCacheDir() {
    let dir = OS.Path.join(OS.Constants.Path.profileDir, "readercache");
    return OS.File.exists(dir).then(exists => {
      if (!exists) {
        return OS.File.makeDir(dir);
      }
      return undefined;
    });
  },

  /**
   * Sets a global language string value if the result is confident
   *
   * @return Promise
   * @resolves when the language is detected
   */
  _assignLanguage(article) {
    return LanguageDetector.detectLanguage(article.textContent).then(result => {
      article.language = result.confident ? result.language : null;
    });
  },

  _maybeAssignTextDirection(article) {
    // TODO: Remove the hardcoded language codes below once bug 1320265 is resolved.
    if (!article.dir && ["ar", "fa", "he", "ug", "ur"].includes(article.language)) {
      article.dir = "rtl";
    }
  },

  /**
   * Assigns the estimated reading time range of the article to the article object.
   *
   * @param article the article object to assign the reading time estimate to.
   */
  _assignReadTime(article) {
    let lang = article.language || "en";
    const readingSpeed = this._getReadingSpeedForLanguage(lang);
    const charactersPerMinuteLow = readingSpeed.cpm - readingSpeed.variance;
    const charactersPerMinuteHigh = readingSpeed.cpm + readingSpeed.variance;
    const length = article.length;

    article.readingTimeMinsSlow = Math.ceil(length / charactersPerMinuteLow);
    article.readingTimeMinsFast  = Math.ceil(length / charactersPerMinuteHigh);
  },

  /**
   * Returns the reading speed of a selection of languages with likely variance.
   *
   * Reading speed estimated from a study done on reading speeds in various languages.
   * study can be found here: http://iovs.arvojournals.org/article.aspx?articleid=2166061
   *
   * @return object with characters per minute and variance. Defaults to English
   *         if no suitable language is found in the collection.
   */
  _getReadingSpeedForLanguage(lang) {
    const readingSpeed = new Map([
      [ "en", {cpm: 987,  variance: 118 } ],
      [ "ar", {cpm: 612,  variance: 88 } ],
      [ "de", {cpm: 920,  variance: 86 } ],
      [ "es", {cpm: 1025, variance: 127 } ],
      [ "fi", {cpm: 1078, variance: 121 } ],
      [ "fr", {cpm: 998,  variance: 126 } ],
      [ "he", {cpm: 833,  variance: 130 } ],
      [ "it", {cpm: 950,  variance: 140 } ],
      [ "jw", {cpm: 357,  variance: 56 } ],
      [ "nl", {cpm: 978,  variance: 143 } ],
      [ "pl", {cpm: 916,  variance: 126 } ],
      [ "pt", {cpm: 913,  variance: 145 } ],
      [ "ru", {cpm: 986,  variance: 175 } ],
      [ "sk", {cpm: 885,  variance: 145 } ],
      [ "sv", {cpm: 917,  variance: 156 } ],
      [ "tr", {cpm: 1054, variance: 156 } ],
      [ "zh", {cpm: 255,  variance: 29 } ],
    ]);

    return readingSpeed.get(lang) || readingSpeed.get("en");
  },
};