'use strict'; var obsidian = require('obsidian'); /*! ***************************************************************************** Copyright (c) Microsoft Corporation. Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ***************************************************************************** */ function __awaiter(thisArg, _arguments, P, generator) { function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } return new (P || (P = Promise))(function (resolve, reject) { function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } step((generator = generator.apply(thisArg, _arguments || [])).next()); }); } function getBaseUrl(url, prefix) { const dir = '/'; const urlAsArray = url.split(dir); const doubleSlashIndex = url.indexOf('://'); if (doubleSlashIndex !== -1 && doubleSlashIndex === url.indexOf(dir) - 1) { urlAsArray.length = 3; let url = urlAsArray.join(dir); if (prefix !== undefined) url = url.replace(/http:\/\/|https:\/\//, prefix); return url; } else { const pointIndex = url.indexOf('.'); if (pointIndex !== -1 && pointIndex !== 0) { return (prefix !== undefined ? prefix : 'https://') + urlAsArray[0]; } } } function normalizeFilename(fileName) { const illegalSymbols = [':', '#', '/', '\\', '|', '?', '*', '<', '>', '"']; if (illegalSymbols.some((el) => fileName.contains(el))) { illegalSymbols.forEach((ilSymbol) => { fileName = fileName.replace(ilSymbol, ''); }); return fileName; } else { return fileName; } } const DEFAULT_SETTINGS = { inboxDir: 'ReadItLater Inbox', openNewNote: false, youtubeNote: `[[ReadItLater]] [[Youtube]]\n\n# [%videoTitle%](%videoURL%)\n\n%videoPlayer%`, twitterNote: `[[ReadItLater]] [[Tweet]]\n\n# [%tweetAuthorName%](%tweetURL%)\n\n%tweetContent%`, parsableArticleNote: `[[ReadItLater]] [[Article]]\n\n# [%articleTitle%](%articleURL%)\n\n%articleContent%`, notParsableArticleNote: `[[ReadItLater]] [[Article]]\n\n[%articleURL%](%articleURL%)`, textSnippetNote: `[[ReadItLater]] [[Textsnippet]]\n\n%content%`, }; class ReadItLaterSettingsTab extends obsidian.PluginSettingTab { constructor(app, plugin) { super(app, plugin); this.plugin = plugin; } display() { const { containerEl } = this; containerEl.empty(); containerEl.createEl('h2', { text: 'Settings for the ReadItLater plugin.' }); new obsidian.Setting(containerEl) .setName('Inbox dir') .setDesc('Enter valid folder name. For nested folders use this format: Folder A/Folder B. If no folder is enetred, new note will be created in vault root.') .addText((text) => text .setPlaceholder('Defaults to root') .setValue(this.plugin.settings.inboxDir || DEFAULT_SETTINGS.inboxDir) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.inboxDir = value; yield this.plugin.saveSettings(); }))); new obsidian.Setting(containerEl) .setName('Open new note') .setDesc('If enabled, new note will open in current workspace') .addToggle((toggle) => toggle .setValue(this.plugin.settings.openNewNote || DEFAULT_SETTINGS.openNewNote) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.openNewNote = value; yield this.plugin.saveSettings(); }))); new obsidian.Setting(containerEl) .setName('Youtube note template') .setDesc('Available variables: %videoTitle%, %videoURL%, %videoId%, %videoPlayer%') .addTextArea((textarea) => textarea .setValue(this.plugin.settings.youtubeNote || DEFAULT_SETTINGS.youtubeNote) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.youtubeNote = value; yield this.plugin.saveSettings(); }))); new obsidian.Setting(containerEl) .setName('Twitter note template') .setDesc('Available variables: %tweetAuthorName%, %tweetURL%, %tweetContent%') .addTextArea((textarea) => textarea .setValue(this.plugin.settings.twitterNote || DEFAULT_SETTINGS.twitterNote) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.twitterNote = value; yield this.plugin.saveSettings(); }))); new obsidian.Setting(containerEl) .setName('Parsable article note template') .setDesc('Available variables: %articleTitle%, %articleURL%, %articleContent%') .addTextArea((textarea) => textarea .setValue(this.plugin.settings.parsableArticleNote || DEFAULT_SETTINGS.parsableArticleNote) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.parsableArticleNote = value; yield this.plugin.saveSettings(); }))); new obsidian.Setting(containerEl) .setName('Not parsable article note template') .setDesc('Available variables: %articleURL%') .addTextArea((textarea) => textarea .setValue(this.plugin.settings.notParsableArticleNote || DEFAULT_SETTINGS.notParsableArticleNote) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.notParsableArticleNote = value; yield this.plugin.saveSettings(); }))); new obsidian.Setting(containerEl) .setName('Text snippet note template') .setDesc('Available variables: %content%') .addTextArea((textarea) => textarea .setValue(this.plugin.settings.textSnippetNote || DEFAULT_SETTINGS.textSnippetNote) .onChange((value) => __awaiter(this, void 0, void 0, function* () { this.plugin.settings.textSnippetNote = value; yield this.plugin.saveSettings(); }))); } } class Note { constructor(fileName, content) { this.fileName = fileName; this.content = content; } } class Parser { constructor(settings) { this.settings = settings; } isValidUrl(url) { try { new URL(url); } catch (e) { return false; } return true; } getFormattedDateForFilename() { const date = new Date(); return obsidian.moment(date).format('YYYY-MM-DD HH-mm-ss'); } } class YoutubeParser extends Parser { constructor(settings) { super(settings); this.PATTERN = /(youtube.com|youtu.be)\/(watch)?(\?v=)?(\S+)?/; } test(url) { return this.isValidUrl(url) && this.PATTERN.test(url); } prepareNote(url) { return __awaiter(this, void 0, void 0, function* () { const response = yield obsidian.request({ method: 'GET', url }); const videoTitle = new DOMParser().parseFromString(response, 'text/html').title; const videoId = this.PATTERN.exec(url)[4]; const videoPlayer = ``; const content = this.settings.youtubeNote .replace('%videoTitle%', videoTitle) .replace('%videoURL%', url) .replace('%videoId%', videoId) .replace('%videoPlayer%', videoPlayer); const fileName = `Youtube - ${videoTitle}.md`; return new Note(fileName, content); }); } } class TwitterParser extends Parser { constructor(settings) { super(settings); this.PATTERN = /(https:\/\/twitter.com\/([a-zA-Z0-9_]+\/)([a-zA-Z0-9_]+\/[a-zA-Z0-9_]+))/; } test(url) { return this.isValidUrl(url) && this.PATTERN.test(url); } prepareNote(url) { return __awaiter(this, void 0, void 0, function* () { const response = JSON.parse(yield obsidian.request({ method: 'GET', contentType: 'application/json', url: `https://publish.twitter.com/oembed?url=${url}`, })); const tweetAuthorName = response.author_name; const content = this.settings.twitterNote .replace('%tweetAuthorName%', tweetAuthorName) .replace('%tweetURL%', response.url) .replace('%tweetContent%', response.html); const fileName = `Tweet from ${tweetAuthorName} (${this.getFormattedDateForFilename()}).md`; return new Note(fileName, content); }); } } var Readability$1 = {exports: {}}; /*eslint-env es6:false*/ (function (module) { /* * Copyright (c) 2010 Arc90 Inc * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * This code is heavily based on Arc90's readability.js (1.7.1) script * available at: http://code.google.com/p/arc90labs-readability */ /** * Public constructor. * @param {HTMLDocument} doc The document to parse. * @param {Object} options The options object. */ function Readability(doc, options) { // In some older versions, people passed a URI as the first argument. Cope: if (options && options.documentElement) { doc = options; options = arguments[2]; } else if (!doc || !doc.documentElement) { throw new Error("First argument to Readability constructor should be a document object."); } options = options || {}; this._doc = doc; this._docJSDOMParser = this._doc.firstChild.__JSDOMParser__; this._articleTitle = null; this._articleByline = null; this._articleDir = null; this._articleSiteName = null; this._attempts = []; // Configurable options this._debug = !!options.debug; this._maxElemsToParse = options.maxElemsToParse || this.DEFAULT_MAX_ELEMS_TO_PARSE; this._nbTopCandidates = options.nbTopCandidates || this.DEFAULT_N_TOP_CANDIDATES; this._charThreshold = options.charThreshold || this.DEFAULT_CHAR_THRESHOLD; this._classesToPreserve = this.CLASSES_TO_PRESERVE.concat(options.classesToPreserve || []); this._keepClasses = !!options.keepClasses; this._serializer = options.serializer || function(el) { return el.innerHTML; }; this._disableJSONLD = !!options.disableJSONLD; // Start with all flags set this._flags = this.FLAG_STRIP_UNLIKELYS | this.FLAG_WEIGHT_CLASSES | this.FLAG_CLEAN_CONDITIONALLY; // Control whether log messages are sent to the console if (this._debug) { let logNode = function(node) { if (node.nodeType == node.TEXT_NODE) { return `${node.nodeName} ("${node.textContent}")`; } let attrPairs = Array.from(node.attributes || [], function(attr) { return `${attr.name}="${attr.value}"`; }).join(" "); return `<${node.localName} ${attrPairs}>`; }; this.log = function () { if (typeof dump !== "undefined") { var msg = Array.prototype.map.call(arguments, function(x) { return (x && x.nodeName) ? logNode(x) : x; }).join(" "); dump("Reader: (Readability) " + msg + "\n"); } else if (typeof console !== "undefined") { let args = Array.from(arguments, arg => { if (arg && arg.nodeType == this.ELEMENT_NODE) { return logNode(arg); } return arg; }); args.unshift("Reader: (Readability)"); console.log.apply(console, args); } }; } else { this.log = function () {}; } } Readability.prototype = { FLAG_STRIP_UNLIKELYS: 0x1, FLAG_WEIGHT_CLASSES: 0x2, FLAG_CLEAN_CONDITIONALLY: 0x4, // https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType ELEMENT_NODE: 1, TEXT_NODE: 3, // Max number of nodes supported by this parser. Default: 0 (no limit) DEFAULT_MAX_ELEMS_TO_PARSE: 0, // The number of top candidates to consider when analysing how // tight the competition is among candidates. DEFAULT_N_TOP_CANDIDATES: 5, // Element tags to score by default. DEFAULT_TAGS_TO_SCORE: "section,h2,h3,h4,h5,h6,p,td,pre".toUpperCase().split(","), // The default number of chars an article must have in order to return a result DEFAULT_CHAR_THRESHOLD: 500, // All of the regular expressions in use within readability. // Defined up here so we don't instantiate them repeatedly in loops. REGEXPS: { // NOTE: These two regular expressions are duplicated in // Readability-readerable.js. Please keep both copies in sync. unlikelyCandidates: /-ad-|ai2html|banner|breadcrumbs|combx|comment|community|cover-wrap|disqus|extra|footer|gdpr|header|legends|menu|related|remark|replies|rss|shoutbox|sidebar|skyscraper|social|sponsor|supplemental|ad-break|agegate|pagination|pager|popup|yom-remote/i, okMaybeItsACandidate: /and|article|body|column|content|main|shadow/i, positive: /article|body|content|entry|hentry|h-entry|main|page|pagination|post|text|blog|story/i, negative: /-ad-|hidden|^hid$| hid$| hid |^hid |banner|combx|comment|com-|contact|foot|footer|footnote|gdpr|masthead|media|meta|outbrain|promo|related|scroll|share|shoutbox|sidebar|skyscraper|sponsor|shopping|tags|tool|widget/i, extraneous: /print|archive|comment|discuss|e[\-]?mail|share|reply|all|login|sign|single|utility/i, byline: /byline|author|dateline|writtenby|p-author/i, replaceFonts: /<(\/?)font[^>]*>/gi, normalize: /\s{2,}/g, videos: /\/\/(www\.)?((dailymotion|youtube|youtube-nocookie|player\.vimeo|v\.qq)\.com|(archive|upload\.wikimedia)\.org|player\.twitch\.tv)/i, shareElements: /(\b|_)(share|sharedaddy)(\b|_)/i, nextLink: /(next|weiter|continue|>([^\|]|$)|»([^\|]|$))/i, prevLink: /(prev|earl|old|new|<|«)/i, tokenize: /\W+/g, whitespace: /^\s*$/, hasContent: /\S$/, hashUrl: /^#.+/, srcsetUrl: /(\S+)(\s+[\d.]+[xw])?(\s*(?:,|$))/g, b64DataUrl: /^data:\s*([^\s;,]+)\s*;\s*base64\s*,/i, // See: https://schema.org/Article jsonLdArticleTypes: /^Article|AdvertiserContentArticle|NewsArticle|AnalysisNewsArticle|AskPublicNewsArticle|BackgroundNewsArticle|OpinionNewsArticle|ReportageNewsArticle|ReviewNewsArticle|Report|SatiricalArticle|ScholarlyArticle|MedicalScholarlyArticle|SocialMediaPosting|BlogPosting|LiveBlogPosting|DiscussionForumPosting|TechArticle|APIReference$/ }, UNLIKELY_ROLES: [ "menu", "menubar", "complementary", "navigation", "alert", "alertdialog", "dialog" ], DIV_TO_P_ELEMS: new Set([ "BLOCKQUOTE", "DL", "DIV", "IMG", "OL", "P", "PRE", "TABLE", "UL" ]), ALTER_TO_DIV_EXCEPTIONS: ["DIV", "ARTICLE", "SECTION", "P"], PRESENTATIONAL_ATTRIBUTES: [ "align", "background", "bgcolor", "border", "cellpadding", "cellspacing", "frame", "hspace", "rules", "style", "valign", "vspace" ], DEPRECATED_SIZE_ATTRIBUTE_ELEMS: [ "TABLE", "TH", "TD", "HR", "PRE" ], // The commented out elements qualify as phrasing content but tend to be // removed by readability when put into paragraphs, so we ignore them here. PHRASING_ELEMS: [ // "CANVAS", "IFRAME", "SVG", "VIDEO", "ABBR", "AUDIO", "B", "BDO", "BR", "BUTTON", "CITE", "CODE", "DATA", "DATALIST", "DFN", "EM", "EMBED", "I", "IMG", "INPUT", "KBD", "LABEL", "MARK", "MATH", "METER", "NOSCRIPT", "OBJECT", "OUTPUT", "PROGRESS", "Q", "RUBY", "SAMP", "SCRIPT", "SELECT", "SMALL", "SPAN", "STRONG", "SUB", "SUP", "TEXTAREA", "TIME", "VAR", "WBR" ], // These are the classes that readability sets itself. CLASSES_TO_PRESERVE: [ "page" ], // These are the list of HTML entities that need to be escaped. HTML_ESCAPE_MAP: { "lt": "<", "gt": ">", "amp": "&", "quot": '"', "apos": "'", }, /** * Run any post-process modifications to article content as necessary. * * @param Element * @return void **/ _postProcessContent: function(articleContent) { // Readability cannot open relative uris so we convert them to absolute uris. this._fixRelativeUris(articleContent); this._simplifyNestedElements(articleContent); if (!this._keepClasses) { // Remove classes. this._cleanClasses(articleContent); } }, /** * Iterates over a NodeList, calls `filterFn` for each node and removes node * if function returned `true`. * * If function is not passed, removes all the nodes in node list. * * @param NodeList nodeList The nodes to operate on * @param Function filterFn the function to use as a filter * @return void */ _removeNodes: function(nodeList, filterFn) { // Avoid ever operating on live node lists. if (this._docJSDOMParser && nodeList._isLiveNodeList) { throw new Error("Do not pass live node lists to _removeNodes"); } for (var i = nodeList.length - 1; i >= 0; i--) { var node = nodeList[i]; var parentNode = node.parentNode; if (parentNode) { if (!filterFn || filterFn.call(this, node, i, nodeList)) { parentNode.removeChild(node); } } } }, /** * Iterates over a NodeList, and calls _setNodeTag for each node. * * @param NodeList nodeList The nodes to operate on * @param String newTagName the new tag name to use * @return void */ _replaceNodeTags: function(nodeList, newTagName) { // Avoid ever operating on live node lists. if (this._docJSDOMParser && nodeList._isLiveNodeList) { throw new Error("Do not pass live node lists to _replaceNodeTags"); } for (const node of nodeList) { this._setNodeTag(node, newTagName); } }, /** * Iterate over a NodeList, which doesn't natively fully implement the Array * interface. * * For convenience, the current object context is applied to the provided * iterate function. * * @param NodeList nodeList The NodeList. * @param Function fn The iterate function. * @return void */ _forEachNode: function(nodeList, fn) { Array.prototype.forEach.call(nodeList, fn, this); }, /** * Iterate over a NodeList, and return the first node that passes * the supplied test function * * For convenience, the current object context is applied to the provided * test function. * * @param NodeList nodeList The NodeList. * @param Function fn The test function. * @return void */ _findNode: function(nodeList, fn) { return Array.prototype.find.call(nodeList, fn, this); }, /** * Iterate over a NodeList, return true if any of the provided iterate * function calls returns true, false otherwise. * * For convenience, the current object context is applied to the * provided iterate function. * * @param NodeList nodeList The NodeList. * @param Function fn The iterate function. * @return Boolean */ _someNode: function(nodeList, fn) { return Array.prototype.some.call(nodeList, fn, this); }, /** * Iterate over a NodeList, return true if all of the provided iterate * function calls return true, false otherwise. * * For convenience, the current object context is applied to the * provided iterate function. * * @param NodeList nodeList The NodeList. * @param Function fn The iterate function. * @return Boolean */ _everyNode: function(nodeList, fn) { return Array.prototype.every.call(nodeList, fn, this); }, /** * Concat all nodelists passed as arguments. * * @return ...NodeList * @return Array */ _concatNodeLists: function() { var slice = Array.prototype.slice; var args = slice.call(arguments); var nodeLists = args.map(function(list) { return slice.call(list); }); return Array.prototype.concat.apply([], nodeLists); }, _getAllNodesWithTag: function(node, tagNames) { if (node.querySelectorAll) { return node.querySelectorAll(tagNames.join(",")); } return [].concat.apply([], tagNames.map(function(tag) { var collection = node.getElementsByTagName(tag); return Array.isArray(collection) ? collection : Array.from(collection); })); }, /** * Removes the class="" attribute from every element in the given * subtree, except those that match CLASSES_TO_PRESERVE and * the classesToPreserve array from the options object. * * @param Element * @return void */ _cleanClasses: function(node) { var classesToPreserve = this._classesToPreserve; var className = (node.getAttribute("class") || "") .split(/\s+/) .filter(function(cls) { return classesToPreserve.indexOf(cls) != -1; }) .join(" "); if (className) { node.setAttribute("class", className); } else { node.removeAttribute("class"); } for (node = node.firstElementChild; node; node = node.nextElementSibling) { this._cleanClasses(node); } }, /** * Converts each and uri in the given element to an absolute URI, * ignoring #ref URIs. * * @param Element * @return void */ _fixRelativeUris: function(articleContent) { var baseURI = this._doc.baseURI; var documentURI = this._doc.documentURI; function toAbsoluteURI(uri) { // Leave hash links alone if the base URI matches the document URI: if (baseURI == documentURI && uri.charAt(0) == "#") { return uri; } // Otherwise, resolve against base URI: try { return new URL(uri, baseURI).href; } catch (ex) { // Something went wrong, just return the original: } return uri; } var links = this._getAllNodesWithTag(articleContent, ["a"]); this._forEachNode(links, function(link) { var href = link.getAttribute("href"); if (href) { // Remove links with javascript: URIs, since // they won't work after scripts have been removed from the page. if (href.indexOf("javascript:") === 0) { // if the link only contains simple text content, it can be converted to a text node if (link.childNodes.length === 1 && link.childNodes[0].nodeType === this.TEXT_NODE) { var text = this._doc.createTextNode(link.textContent); link.parentNode.replaceChild(text, link); } else { // if the link has multiple children, they should all be preserved var container = this._doc.createElement("span"); while (link.childNodes.length > 0) { container.appendChild(link.childNodes[0]); } link.parentNode.replaceChild(container, link); } } else { link.setAttribute("href", toAbsoluteURI(href)); } } }); var medias = this._getAllNodesWithTag(articleContent, [ "img", "picture", "figure", "video", "audio", "source" ]); this._forEachNode(medias, function(media) { var src = media.getAttribute("src"); var poster = media.getAttribute("poster"); var srcset = media.getAttribute("srcset"); if (src) { media.setAttribute("src", toAbsoluteURI(src)); } if (poster) { media.setAttribute("poster", toAbsoluteURI(poster)); } if (srcset) { var newSrcset = srcset.replace(this.REGEXPS.srcsetUrl, function(_, p1, p2, p3) { return toAbsoluteURI(p1) + (p2 || "") + p3; }); media.setAttribute("srcset", newSrcset); } }); }, _simplifyNestedElements: function(articleContent) { var node = articleContent; while (node) { if (node.parentNode && ["DIV", "SECTION"].includes(node.tagName) && !(node.id && node.id.startsWith("readability"))) { if (this._isElementWithoutContent(node)) { node = this._removeAndGetNext(node); continue; } else if (this._hasSingleTagInsideElement(node, "DIV") || this._hasSingleTagInsideElement(node, "SECTION")) { var child = node.children[0]; for (var i = 0; i < node.attributes.length; i++) { child.setAttribute(node.attributes[i].name, node.attributes[i].value); } node.parentNode.replaceChild(child, node); node = child; continue; } } node = this._getNextNode(node); } }, /** * Get the article title as an H1. * * @return string **/ _getArticleTitle: function() { var doc = this._doc; var curTitle = ""; var origTitle = ""; try { curTitle = origTitle = doc.title.trim(); // If they had an element with id "title" in their HTML if (typeof curTitle !== "string") curTitle = origTitle = this._getInnerText(doc.getElementsByTagName("title")[0]); } catch (e) {/* ignore exceptions setting the title. */} var titleHadHierarchicalSeparators = false; function wordCount(str) { return str.split(/\s+/).length; } // If there's a separator in the title, first remove the final part if ((/ [\|\-\\\/>»] /).test(curTitle)) { titleHadHierarchicalSeparators = / [\\\/>»] /.test(curTitle); curTitle = origTitle.replace(/(.*)[\|\-\\\/>»] .*/gi, "$1"); // If the resulting title is too short (3 words or fewer), remove // the first part instead: if (wordCount(curTitle) < 3) curTitle = origTitle.replace(/[^\|\-\\\/>»]*[\|\-\\\/>»](.*)/gi, "$1"); } else if (curTitle.indexOf(": ") !== -1) { // Check if we have an heading containing this exact string, so we // could assume it's the full title. var headings = this._concatNodeLists( doc.getElementsByTagName("h1"), doc.getElementsByTagName("h2") ); var trimmedTitle = curTitle.trim(); var match = this._someNode(headings, function(heading) { return heading.textContent.trim() === trimmedTitle; }); // If we don't, let's extract the title out of the original title string. if (!match) { curTitle = origTitle.substring(origTitle.lastIndexOf(":") + 1); // If the title is now too short, try the first colon instead: if (wordCount(curTitle) < 3) { curTitle = origTitle.substring(origTitle.indexOf(":") + 1); // But if we have too many words before the colon there's something weird // with the titles and the H tags so let's just use the original title instead } else if (wordCount(origTitle.substr(0, origTitle.indexOf(":"))) > 5) { curTitle = origTitle; } } } else if (curTitle.length > 150 || curTitle.length < 15) { var hOnes = doc.getElementsByTagName("h1"); if (hOnes.length === 1) curTitle = this._getInnerText(hOnes[0]); } curTitle = curTitle.trim().replace(this.REGEXPS.normalize, " "); // If we now have 4 words or fewer as our title, and either no // 'hierarchical' separators (\, /, > or ») were found in the original // title or we decreased the number of words by more than 1 word, use // the original title. var curTitleWordCount = wordCount(curTitle); if (curTitleWordCount <= 4 && (!titleHadHierarchicalSeparators || curTitleWordCount != wordCount(origTitle.replace(/[\|\-\\\/>»]+/g, "")) - 1)) { curTitle = origTitle; } return curTitle; }, /** * Prepare the HTML document for readability to scrape it. * This includes things like stripping javascript, CSS, and handling terrible markup. * * @return void **/ _prepDocument: function() { var doc = this._doc; // Remove all style tags in head this._removeNodes(this._getAllNodesWithTag(doc, ["style"])); if (doc.body) { this._replaceBrs(doc.body); } this._replaceNodeTags(this._getAllNodesWithTag(doc, ["font"]), "SPAN"); }, /** * Finds the next node, starting from the given node, and ignoring * whitespace in between. If the given node is an element, the same node is * returned. */ _nextNode: function (node) { var next = node; while (next && (next.nodeType != this.ELEMENT_NODE) && this.REGEXPS.whitespace.test(next.textContent)) { next = next.nextSibling; } return next; }, /** * Replaces 2 or more successive
elements with a single

. * Whitespace between
elements are ignored. For example: *

foo
bar


abc
* will become: *
foo
bar

abc

*/ _replaceBrs: function (elem) { this._forEachNode(this._getAllNodesWithTag(elem, ["br"]), function(br) { var next = br.nextSibling; // Whether 2 or more
elements have been found and replaced with a //

block. var replaced = false; // If we find a
chain, remove the
s until we hit another node // or non-whitespace. This leaves behind the first
in the chain // (which will be replaced with a

later). while ((next = this._nextNode(next)) && (next.tagName == "BR")) { replaced = true; var brSibling = next.nextSibling; next.parentNode.removeChild(next); next = brSibling; } // If we removed a
chain, replace the remaining
with a

. Add // all sibling nodes as children of the

until we hit another
// chain. if (replaced) { var p = this._doc.createElement("p"); br.parentNode.replaceChild(p, br); next = p.nextSibling; while (next) { // If we've hit another

, we're done adding children to this

. if (next.tagName == "BR") { var nextElem = this._nextNode(next.nextSibling); if (nextElem && nextElem.tagName == "BR") break; } if (!this._isPhrasingContent(next)) break; // Otherwise, make this node a child of the new

. var sibling = next.nextSibling; p.appendChild(next); next = sibling; } while (p.lastChild && this._isWhitespace(p.lastChild)) { p.removeChild(p.lastChild); } if (p.parentNode.tagName === "P") this._setNodeTag(p.parentNode, "DIV"); } }); }, _setNodeTag: function (node, tag) { this.log("_setNodeTag", node, tag); if (this._docJSDOMParser) { node.localName = tag.toLowerCase(); node.tagName = tag.toUpperCase(); return node; } var replacement = node.ownerDocument.createElement(tag); while (node.firstChild) { replacement.appendChild(node.firstChild); } node.parentNode.replaceChild(replacement, node); if (node.readability) replacement.readability = node.readability; for (var i = 0; i < node.attributes.length; i++) { try { replacement.setAttribute(node.attributes[i].name, node.attributes[i].value); } catch (ex) { /* it's possible for setAttribute() to throw if the attribute name * isn't a valid XML Name. Such attributes can however be parsed from * source in HTML docs, see https://github.com/whatwg/html/issues/4275, * so we can hit them here and then throw. We don't care about such * attributes so we ignore them. */ } } return replacement; }, /** * Prepare the article node for display. Clean out any inline styles, * iframes, forms, strip extraneous

tags, etc. * * @param Element * @return void **/ _prepArticle: function(articleContent) { this._cleanStyles(articleContent); // Check for data tables before we continue, to avoid removing items in // those tables, which will often be isolated even though they're // visually linked to other content-ful elements (text, images, etc.). this._markDataTables(articleContent); this._fixLazyImages(articleContent); // Clean out junk from the article content this._cleanConditionally(articleContent, "form"); this._cleanConditionally(articleContent, "fieldset"); this._clean(articleContent, "object"); this._clean(articleContent, "embed"); this._clean(articleContent, "footer"); this._clean(articleContent, "link"); this._clean(articleContent, "aside"); // Clean out elements with little content that have "share" in their id/class combinations from final top candidates, // which means we don't remove the top candidates even they have "share". var shareElementThreshold = this.DEFAULT_CHAR_THRESHOLD; this._forEachNode(articleContent.children, function (topCandidate) { this._cleanMatchedNodes(topCandidate, function (node, matchString) { return this.REGEXPS.shareElements.test(matchString) && node.textContent.length < shareElementThreshold; }); }); this._clean(articleContent, "iframe"); this._clean(articleContent, "input"); this._clean(articleContent, "textarea"); this._clean(articleContent, "select"); this._clean(articleContent, "button"); this._cleanHeaders(articleContent); // Do these last as the previous stuff may have removed junk // that will affect these this._cleanConditionally(articleContent, "table"); this._cleanConditionally(articleContent, "ul"); this._cleanConditionally(articleContent, "div"); // replace H1 with H2 as H1 should be only title that is displayed separately this._replaceNodeTags(this._getAllNodesWithTag(articleContent, ["h1"]), "h2"); // Remove extra paragraphs this._removeNodes(this._getAllNodesWithTag(articleContent, ["p"]), function (paragraph) { var imgCount = paragraph.getElementsByTagName("img").length; var embedCount = paragraph.getElementsByTagName("embed").length; var objectCount = paragraph.getElementsByTagName("object").length; // At this point, nasty iframes have been removed, only remain embedded video ones. var iframeCount = paragraph.getElementsByTagName("iframe").length; var totalCount = imgCount + embedCount + objectCount + iframeCount; return totalCount === 0 && !this._getInnerText(paragraph, false); }); this._forEachNode(this._getAllNodesWithTag(articleContent, ["br"]), function(br) { var next = this._nextNode(br.nextSibling); if (next && next.tagName == "P") br.parentNode.removeChild(br); }); // Remove single-cell tables this._forEachNode(this._getAllNodesWithTag(articleContent, ["table"]), function(table) { var tbody = this._hasSingleTagInsideElement(table, "TBODY") ? table.firstElementChild : table; if (this._hasSingleTagInsideElement(tbody, "TR")) { var row = tbody.firstElementChild; if (this._hasSingleTagInsideElement(row, "TD")) { var cell = row.firstElementChild; cell = this._setNodeTag(cell, this._everyNode(cell.childNodes, this._isPhrasingContent) ? "P" : "DIV"); table.parentNode.replaceChild(cell, table); } } }); }, /** * Initialize a node with the readability object. Also checks the * className/id for special names to add to its score. * * @param Element * @return void **/ _initializeNode: function(node) { node.readability = {"contentScore": 0}; switch (node.tagName) { case "DIV": node.readability.contentScore += 5; break; case "PRE": case "TD": case "BLOCKQUOTE": node.readability.contentScore += 3; break; case "ADDRESS": case "OL": case "UL": case "DL": case "DD": case "DT": case "LI": case "FORM": node.readability.contentScore -= 3; break; case "H1": case "H2": case "H3": case "H4": case "H5": case "H6": case "TH": node.readability.contentScore -= 5; break; } node.readability.contentScore += this._getClassWeight(node); }, _removeAndGetNext: function(node) { var nextNode = this._getNextNode(node, true); node.parentNode.removeChild(node); return nextNode; }, /** * Traverse the DOM from node to node, starting at the node passed in. * Pass true for the second parameter to indicate this node itself * (and its kids) are going away, and we want the next node over. * * Calling this in a loop will traverse the DOM depth-first. */ _getNextNode: function(node, ignoreSelfAndKids) { // First check for kids if those aren't being ignored if (!ignoreSelfAndKids && node.firstElementChild) { return node.firstElementChild; } // Then for siblings... if (node.nextElementSibling) { return node.nextElementSibling; } // And finally, move up the parent chain *and* find a sibling // (because this is depth-first traversal, we will have already // seen the parent nodes themselves). do { node = node.parentNode; } while (node && !node.nextElementSibling); return node && node.nextElementSibling; }, // compares second text to first one // 1 = same text, 0 = completely different text // works the way that it splits both texts into words and then finds words that are unique in second text // the result is given by the lower length of unique parts _textSimilarity: function(textA, textB) { var tokensA = textA.toLowerCase().split(this.REGEXPS.tokenize).filter(Boolean); var tokensB = textB.toLowerCase().split(this.REGEXPS.tokenize).filter(Boolean); if (!tokensA.length || !tokensB.length) { return 0; } var uniqTokensB = tokensB.filter(token => !tokensA.includes(token)); var distanceB = uniqTokensB.join(" ").length / tokensB.join(" ").length; return 1 - distanceB; }, _checkByline: function(node, matchString) { if (this._articleByline) { return false; } if (node.getAttribute !== undefined) { var rel = node.getAttribute("rel"); var itemprop = node.getAttribute("itemprop"); } if ((rel === "author" || (itemprop && itemprop.indexOf("author") !== -1) || this.REGEXPS.byline.test(matchString)) && this._isValidByline(node.textContent)) { this._articleByline = node.textContent.trim(); return true; } return false; }, _getNodeAncestors: function(node, maxDepth) { maxDepth = maxDepth || 0; var i = 0, ancestors = []; while (node.parentNode) { ancestors.push(node.parentNode); if (maxDepth && ++i === maxDepth) break; node = node.parentNode; } return ancestors; }, /*** * grabArticle - Using a variety of metrics (content score, classname, element types), find the content that is * most likely to be the stuff a user wants to read. Then return it wrapped up in a div. * * @param page a document to run upon. Needs to be a full document, complete with body. * @return Element **/ _grabArticle: function (page) { this.log("**** grabArticle ****"); var doc = this._doc; var isPaging = page !== null; page = page ? page : this._doc.body; // We can't grab an article if we don't have a page! if (!page) { this.log("No body found in document. Abort."); return null; } var pageCacheHtml = page.innerHTML; while (true) { this.log("Starting grabArticle loop"); var stripUnlikelyCandidates = this._flagIsActive(this.FLAG_STRIP_UNLIKELYS); // First, node prepping. Trash nodes that look cruddy (like ones with the // class name "comment", etc), and turn divs into P tags where they have been // used inappropriately (as in, where they contain no other block level elements.) var elementsToScore = []; var node = this._doc.documentElement; let shouldRemoveTitleHeader = true; while (node) { var matchString = node.className + " " + node.id; if (!this._isProbablyVisible(node)) { this.log("Removing hidden node - " + matchString); node = this._removeAndGetNext(node); continue; } // Check to see if this node is a byline, and remove it if it is. if (this._checkByline(node, matchString)) { node = this._removeAndGetNext(node); continue; } if (shouldRemoveTitleHeader && this._headerDuplicatesTitle(node)) { this.log("Removing header: ", node.textContent.trim(), this._articleTitle.trim()); shouldRemoveTitleHeader = false; node = this._removeAndGetNext(node); continue; } // Remove unlikely candidates if (stripUnlikelyCandidates) { if (this.REGEXPS.unlikelyCandidates.test(matchString) && !this.REGEXPS.okMaybeItsACandidate.test(matchString) && !this._hasAncestorTag(node, "table") && !this._hasAncestorTag(node, "code") && node.tagName !== "BODY" && node.tagName !== "A") { this.log("Removing unlikely candidate - " + matchString); node = this._removeAndGetNext(node); continue; } if (this.UNLIKELY_ROLES.includes(node.getAttribute("role"))) { this.log("Removing content with role " + node.getAttribute("role") + " - " + matchString); node = this._removeAndGetNext(node); continue; } } // Remove DIV, SECTION, and HEADER nodes without any content(e.g. text, image, video, or iframe). if ((node.tagName === "DIV" || node.tagName === "SECTION" || node.tagName === "HEADER" || node.tagName === "H1" || node.tagName === "H2" || node.tagName === "H3" || node.tagName === "H4" || node.tagName === "H5" || node.tagName === "H6") && this._isElementWithoutContent(node)) { node = this._removeAndGetNext(node); continue; } if (this.DEFAULT_TAGS_TO_SCORE.indexOf(node.tagName) !== -1) { elementsToScore.push(node); } // Turn all divs that don't have children block level elements into p's if (node.tagName === "DIV") { // Put phrasing content into paragraphs. var p = null; var childNode = node.firstChild; while (childNode) { var nextSibling = childNode.nextSibling; if (this._isPhrasingContent(childNode)) { if (p !== null) { p.appendChild(childNode); } else if (!this._isWhitespace(childNode)) { p = doc.createElement("p"); node.replaceChild(p, childNode); p.appendChild(childNode); } } else if (p !== null) { while (p.lastChild && this._isWhitespace(p.lastChild)) { p.removeChild(p.lastChild); } p = null; } childNode = nextSibling; } // Sites like http://mobile.slate.com encloses each paragraph with a DIV // element. DIVs with only a P element inside and no text content can be // safely converted into plain P elements to avoid confusing the scoring // algorithm with DIVs with are, in practice, paragraphs. if (this._hasSingleTagInsideElement(node, "P") && this._getLinkDensity(node) < 0.25) { var newNode = node.children[0]; node.parentNode.replaceChild(newNode, node); node = newNode; elementsToScore.push(node); } else if (!this._hasChildBlockElement(node)) { node = this._setNodeTag(node, "P"); elementsToScore.push(node); } } node = this._getNextNode(node); } /** * Loop through all paragraphs, and assign a score to them based on how content-y they look. * Then add their score to their parent node. * * A score is determined by things like number of commas, class names, etc. Maybe eventually link density. **/ var candidates = []; this._forEachNode(elementsToScore, function(elementToScore) { if (!elementToScore.parentNode || typeof(elementToScore.parentNode.tagName) === "undefined") return; // If this paragraph is less than 25 characters, don't even count it. var innerText = this._getInnerText(elementToScore); if (innerText.length < 25) return; // Exclude nodes with no ancestor. var ancestors = this._getNodeAncestors(elementToScore, 5); if (ancestors.length === 0) return; var contentScore = 0; // Add a point for the paragraph itself as a base. contentScore += 1; // Add points for any commas within this paragraph. contentScore += innerText.split(",").length; // For every 100 characters in this paragraph, add another point. Up to 3 points. contentScore += Math.min(Math.floor(innerText.length / 100), 3); // Initialize and score ancestors. this._forEachNode(ancestors, function(ancestor, level) { if (!ancestor.tagName || !ancestor.parentNode || typeof(ancestor.parentNode.tagName) === "undefined") return; if (typeof(ancestor.readability) === "undefined") { this._initializeNode(ancestor); candidates.push(ancestor); } // Node score divider: // - parent: 1 (no division) // - grandparent: 2 // - great grandparent+: ancestor level * 3 if (level === 0) var scoreDivider = 1; else if (level === 1) scoreDivider = 2; else scoreDivider = level * 3; ancestor.readability.contentScore += contentScore / scoreDivider; }); }); // After we've calculated scores, loop through all of the possible // candidate nodes we found and find the one with the highest score. var topCandidates = []; for (var c = 0, cl = candidates.length; c < cl; c += 1) { var candidate = candidates[c]; // Scale the final candidates score based on link density. Good content // should have a relatively small link density (5% or less) and be mostly // unaffected by this operation. var candidateScore = candidate.readability.contentScore * (1 - this._getLinkDensity(candidate)); candidate.readability.contentScore = candidateScore; this.log("Candidate:", candidate, "with score " + candidateScore); for (var t = 0; t < this._nbTopCandidates; t++) { var aTopCandidate = topCandidates[t]; if (!aTopCandidate || candidateScore > aTopCandidate.readability.contentScore) { topCandidates.splice(t, 0, candidate); if (topCandidates.length > this._nbTopCandidates) topCandidates.pop(); break; } } } var topCandidate = topCandidates[0] || null; var neededToCreateTopCandidate = false; var parentOfTopCandidate; // If we still have no top candidate, just use the body as a last resort. // We also have to copy the body node so it is something we can modify. if (topCandidate === null || topCandidate.tagName === "BODY") { // Move all of the page's children into topCandidate topCandidate = doc.createElement("DIV"); neededToCreateTopCandidate = true; // Move everything (not just elements, also text nodes etc.) into the container // so we even include text directly in the body: var kids = page.childNodes; while (kids.length) { this.log("Moving child out:", kids[0]); topCandidate.appendChild(kids[0]); } page.appendChild(topCandidate); this._initializeNode(topCandidate); } else if (topCandidate) { // Find a better top candidate node if it contains (at least three) nodes which belong to `topCandidates` array // and whose scores are quite closed with current `topCandidate` node. var alternativeCandidateAncestors = []; for (var i = 1; i < topCandidates.length; i++) { if (topCandidates[i].readability.contentScore / topCandidate.readability.contentScore >= 0.75) { alternativeCandidateAncestors.push(this._getNodeAncestors(topCandidates[i])); } } var MINIMUM_TOPCANDIDATES = 3; if (alternativeCandidateAncestors.length >= MINIMUM_TOPCANDIDATES) { parentOfTopCandidate = topCandidate.parentNode; while (parentOfTopCandidate.tagName !== "BODY") { var listsContainingThisAncestor = 0; for (var ancestorIndex = 0; ancestorIndex < alternativeCandidateAncestors.length && listsContainingThisAncestor < MINIMUM_TOPCANDIDATES; ancestorIndex++) { listsContainingThisAncestor += Number(alternativeCandidateAncestors[ancestorIndex].includes(parentOfTopCandidate)); } if (listsContainingThisAncestor >= MINIMUM_TOPCANDIDATES) { topCandidate = parentOfTopCandidate; break; } parentOfTopCandidate = parentOfTopCandidate.parentNode; } } if (!topCandidate.readability) { this._initializeNode(topCandidate); } // Because of our bonus system, parents of candidates might have scores // themselves. They get half of the node. There won't be nodes with higher // scores than our topCandidate, but if we see the score going *up* in the first // few steps up the tree, that's a decent sign that there might be more content // lurking in other places that we want to unify in. The sibling stuff // below does some of that - but only if we've looked high enough up the DOM // tree. parentOfTopCandidate = topCandidate.parentNode; var lastScore = topCandidate.readability.contentScore; // The scores shouldn't get too low. var scoreThreshold = lastScore / 3; while (parentOfTopCandidate.tagName !== "BODY") { if (!parentOfTopCandidate.readability) { parentOfTopCandidate = parentOfTopCandidate.parentNode; continue; } var parentScore = parentOfTopCandidate.readability.contentScore; if (parentScore < scoreThreshold) break; if (parentScore > lastScore) { // Alright! We found a better parent to use. topCandidate = parentOfTopCandidate; break; } lastScore = parentOfTopCandidate.readability.contentScore; parentOfTopCandidate = parentOfTopCandidate.parentNode; } // If the top candidate is the only child, use parent instead. This will help sibling // joining logic when adjacent content is actually located in parent's sibling node. parentOfTopCandidate = topCandidate.parentNode; while (parentOfTopCandidate.tagName != "BODY" && parentOfTopCandidate.children.length == 1) { topCandidate = parentOfTopCandidate; parentOfTopCandidate = topCandidate.parentNode; } if (!topCandidate.readability) { this._initializeNode(topCandidate); } } // Now that we have the top candidate, look through its siblings for content // that might also be related. Things like preambles, content split by ads // that we removed, etc. var articleContent = doc.createElement("DIV"); if (isPaging) articleContent.id = "readability-content"; var siblingScoreThreshold = Math.max(10, topCandidate.readability.contentScore * 0.2); // Keep potential top candidate's parent node to try to get text direction of it later. parentOfTopCandidate = topCandidate.parentNode; var siblings = parentOfTopCandidate.children; for (var s = 0, sl = siblings.length; s < sl; s++) { var sibling = siblings[s]; var append = false; this.log("Looking at sibling node:", sibling, sibling.readability ? ("with score " + sibling.readability.contentScore) : ""); this.log("Sibling has score", sibling.readability ? sibling.readability.contentScore : "Unknown"); if (sibling === topCandidate) { append = true; } else { var contentBonus = 0; // Give a bonus if sibling nodes and top candidates have the example same classname if (sibling.className === topCandidate.className && topCandidate.className !== "") contentBonus += topCandidate.readability.contentScore * 0.2; if (sibling.readability && ((sibling.readability.contentScore + contentBonus) >= siblingScoreThreshold)) { append = true; } else if (sibling.nodeName === "P") { var linkDensity = this._getLinkDensity(sibling); var nodeContent = this._getInnerText(sibling); var nodeLength = nodeContent.length; if (nodeLength > 80 && linkDensity < 0.25) { append = true; } else if (nodeLength < 80 && nodeLength > 0 && linkDensity === 0 && nodeContent.search(/\.( |$)/) !== -1) { append = true; } } } if (append) { this.log("Appending node:", sibling); if (this.ALTER_TO_DIV_EXCEPTIONS.indexOf(sibling.nodeName) === -1) { // We have a node that isn't a common block level element, like a form or td tag. // Turn it into a div so it doesn't get filtered out later by accident. this.log("Altering sibling:", sibling, "to div."); sibling = this._setNodeTag(sibling, "DIV"); } articleContent.appendChild(sibling); // siblings is a reference to the children array, and // sibling is removed from the array when we call appendChild(). // As a result, we must revisit this index since the nodes // have been shifted. s -= 1; sl -= 1; } } if (this._debug) this.log("Article content pre-prep: " + articleContent.innerHTML); // So we have all of the content that we need. Now we clean it up for presentation. this._prepArticle(articleContent); if (this._debug) this.log("Article content post-prep: " + articleContent.innerHTML); if (neededToCreateTopCandidate) { // We already created a fake div thing, and there wouldn't have been any siblings left // for the previous loop, so there's no point trying to create a new div, and then // move all the children over. Just assign IDs and class names here. No need to append // because that already happened anyway. topCandidate.id = "readability-page-1"; topCandidate.className = "page"; } else { var div = doc.createElement("DIV"); div.id = "readability-page-1"; div.className = "page"; var children = articleContent.childNodes; while (children.length) { div.appendChild(children[0]); } articleContent.appendChild(div); } if (this._debug) this.log("Article content after paging: " + articleContent.innerHTML); var parseSuccessful = true; // Now that we've gone through the full algorithm, check to see if // we got any meaningful content. If we didn't, we may need to re-run // grabArticle with different flags set. This gives us a higher likelihood of // finding the content, and the sieve approach gives us a higher likelihood of // finding the -right- content. var textLength = this._getInnerText(articleContent, true).length; if (textLength < this._charThreshold) { parseSuccessful = false; page.innerHTML = pageCacheHtml; if (this._flagIsActive(this.FLAG_STRIP_UNLIKELYS)) { this._removeFlag(this.FLAG_STRIP_UNLIKELYS); this._attempts.push({articleContent: articleContent, textLength: textLength}); } else if (this._flagIsActive(this.FLAG_WEIGHT_CLASSES)) { this._removeFlag(this.FLAG_WEIGHT_CLASSES); this._attempts.push({articleContent: articleContent, textLength: textLength}); } else if (this._flagIsActive(this.FLAG_CLEAN_CONDITIONALLY)) { this._removeFlag(this.FLAG_CLEAN_CONDITIONALLY); this._attempts.push({articleContent: articleContent, textLength: textLength}); } else { this._attempts.push({articleContent: articleContent, textLength: textLength}); // No luck after removing flags, just return the longest text we found during the different loops this._attempts.sort(function (a, b) { return b.textLength - a.textLength; }); // But first check if we actually have something if (!this._attempts[0].textLength) { return null; } articleContent = this._attempts[0].articleContent; parseSuccessful = true; } } if (parseSuccessful) { // Find out text direction from ancestors of final top candidate. var ancestors = [parentOfTopCandidate, topCandidate].concat(this._getNodeAncestors(parentOfTopCandidate)); this._someNode(ancestors, function(ancestor) { if (!ancestor.tagName) return false; var articleDir = ancestor.getAttribute("dir"); if (articleDir) { this._articleDir = articleDir; return true; } return false; }); return articleContent; } } }, /** * Check whether the input string could be a byline. * This verifies that the input is a string, and that the length * is less than 100 chars. * * @param possibleByline {string} - a string to check whether its a byline. * @return Boolean - whether the input string is a byline. */ _isValidByline: function(byline) { if (typeof byline == "string" || byline instanceof String) { byline = byline.trim(); return (byline.length > 0) && (byline.length < 100); } return false; }, /** * Converts some of the common HTML entities in string to their corresponding characters. * * @param str {string} - a string to unescape. * @return string without HTML entity. */ _unescapeHtmlEntities: function(str) { if (!str) { return str; } var htmlEscapeMap = this.HTML_ESCAPE_MAP; return str.replace(/&(quot|amp|apos|lt|gt);/g, function(_, tag) { return htmlEscapeMap[tag]; }).replace(/&#(?:x([0-9a-z]{1,4})|([0-9]{1,4}));/gi, function(_, hex, numStr) { var num = parseInt(hex || numStr, hex ? 16 : 10); return String.fromCharCode(num); }); }, /** * Try to extract metadata from JSON-LD object. * For now, only Schema.org objects of type Article or its subtypes are supported. * @return Object with any metadata that could be extracted (possibly none) */ _getJSONLD: function (doc) { var scripts = this._getAllNodesWithTag(doc, ["script"]); var jsonLdElement = this._findNode(scripts, function(el) { return el.getAttribute("type") === "application/ld+json"; }); if (jsonLdElement) { try { // Strip CDATA markers if present var content = jsonLdElement.textContent.replace(/^\s*\s*$/g, ""); var parsed = JSON.parse(content); var metadata = {}; if ( !parsed["@context"] || !parsed["@context"].match(/^https?\:\/\/schema\.org$/) ) { return metadata; } if (!parsed["@type"] && Array.isArray(parsed["@graph"])) { parsed = parsed["@graph"].find(function(it) { return (it["@type"] || "").match( this.REGEXPS.jsonLdArticleTypes ); }); } if ( !parsed || !parsed["@type"] || !parsed["@type"].match(this.REGEXPS.jsonLdArticleTypes) ) { return metadata; } if (typeof parsed.name === "string") { metadata.title = parsed.name.trim(); } else if (typeof parsed.headline === "string") { metadata.title = parsed.headline.trim(); } if (parsed.author) { if (typeof parsed.author.name === "string") { metadata.byline = parsed.author.name.trim(); } else if (Array.isArray(parsed.author) && parsed.author[0] && typeof parsed.author[0].name === "string") { metadata.byline = parsed.author .filter(function(author) { return author && typeof author.name === "string"; }) .map(function(author) { return author.name.trim(); }) .join(", "); } } if (typeof parsed.description === "string") { metadata.excerpt = parsed.description.trim(); } if ( parsed.publisher && typeof parsed.publisher.name === "string" ) { metadata.siteName = parsed.publisher.name.trim(); } return metadata; } catch (err) { this.log(err.message); } } return {}; }, /** * Attempts to get excerpt and byline metadata for the article. * * @param {Object} jsonld — object containing any metadata that * could be extracted from JSON-LD object. * * @return Object with optional "excerpt" and "byline" properties */ _getArticleMetadata: function(jsonld) { var metadata = {}; var values = {}; var metaElements = this._doc.getElementsByTagName("meta"); // property is a space-separated list of values var propertyPattern = /\s*(dc|dcterm|og|twitter)\s*:\s*(author|creator|description|title|site_name)\s*/gi; // name is a single value var namePattern = /^\s*(?:(dc|dcterm|og|twitter|weibo:(article|webpage))\s*[\.:]\s*)?(author|creator|description|title|site_name)\s*$/i; // Find description tags. this._forEachNode(metaElements, function(element) { var elementName = element.getAttribute("name"); var elementProperty = element.getAttribute("property"); var content = element.getAttribute("content"); if (!content) { return; } var matches = null; var name = null; if (elementProperty) { matches = elementProperty.match(propertyPattern); if (matches) { // Convert to lowercase, and remove any whitespace // so we can match below. name = matches[0].toLowerCase().replace(/\s/g, ""); // multiple authors values[name] = content.trim(); } } if (!matches && elementName && namePattern.test(elementName)) { name = elementName; if (content) { // Convert to lowercase, remove any whitespace, and convert dots // to colons so we can match below. name = name.toLowerCase().replace(/\s/g, "").replace(/\./g, ":"); values[name] = content.trim(); } } }); // get title metadata.title = jsonld.title || values["dc:title"] || values["dcterm:title"] || values["og:title"] || values["weibo:article:title"] || values["weibo:webpage:title"] || values["title"] || values["twitter:title"]; if (!metadata.title) { metadata.title = this._getArticleTitle(); } // get author metadata.byline = jsonld.byline || values["dc:creator"] || values["dcterm:creator"] || values["author"]; // get description metadata.excerpt = jsonld.excerpt || values["dc:description"] || values["dcterm:description"] || values["og:description"] || values["weibo:article:description"] || values["weibo:webpage:description"] || values["description"] || values["twitter:description"]; // get site name metadata.siteName = jsonld.siteName || values["og:site_name"]; // in many sites the meta value is escaped with HTML entities, // so here we need to unescape it metadata.title = this._unescapeHtmlEntities(metadata.title); metadata.byline = this._unescapeHtmlEntities(metadata.byline); metadata.excerpt = this._unescapeHtmlEntities(metadata.excerpt); metadata.siteName = this._unescapeHtmlEntities(metadata.siteName); return metadata; }, /** * Check if node is image, or if node contains exactly only one image * whether as a direct child or as its descendants. * * @param Element **/ _isSingleImage: function(node) { if (node.tagName === "IMG") { return true; } if (node.children.length !== 1 || node.textContent.trim() !== "") { return false; } return this._isSingleImage(node.children[0]); }, /** * Find all