diff options
Diffstat (limited to 'plugins/readability')
| -rw-r--r-- | plugins/readability/README.md | 2 | ||||
| -rwxr-xr-x | plugins/readability/readability | bin | 17056 -> 0 bytes | |||
| -rw-r--r-- | plugins/readability/readability.c | 31 | ||||
| -rw-r--r-- | plugins/readability/readability.h | 5 | ||||
| -rw-r--r-- | plugins/readability/readability.js | 2726 | ||||
| -rwxr-xr-x | plugins/readability/recompute_READABILITY_N.sh | 9 |
6 files changed, 0 insertions, 2773 deletions
diff --git a/plugins/readability/README.md b/plugins/readability/README.md deleted file mode 100644 index 2a19a8e..0000000 --- a/plugins/readability/README.md +++ /dev/null @@ -1,2 +0,0 @@ -This code reimplements firefox readability mode. Code taken from <https://raw.githubusercontent.com/ushnisha/readability-reader-webextensions/master/content_scripts/tranquilize.js> - diff --git a/plugins/readability/readability b/plugins/readability/readability Binary files differdeleted file mode 100755 index 2c70985..0000000 --- a/plugins/readability/readability +++ /dev/null diff --git a/plugins/readability/readability.c b/plugins/readability/readability.c deleted file mode 100644 index 33df917..0000000 --- a/plugins/readability/readability.c +++ /dev/null @@ -1,31 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#define READABILITY_N 88067 + 1000 - -void read_readability_js(char* string) -{ - FILE* fp = fopen("/opt/rosenrot/readability.js", "r"); - if (!fp) { // fp is NULL, fopen failed - fprintf(stderr, "Failed to open file\n"); - fprintf(stderr, "Consider running $ sudo make runtime_files\n"); - string = NULL; - return; - } - int i = 0; - int c; - while ((c = fgetc(fp)) != EOF) { - string[i++] = c; - } - string[i] = '\0'; - fclose(fp); -} - -/* -int main(){ - char* readability_js = malloc(READABILITY_N+1); - read_readability_js(readability_js); - printf("%s", readability_js); - free(readability_js); -} -*/ diff --git a/plugins/readability/readability.h b/plugins/readability/readability.h deleted file mode 100644 index 9dab8c1..0000000 --- a/plugins/readability/readability.h +++ /dev/null @@ -1,5 +0,0 @@ -#pragma once - -#define READABILITY_N 88067 + 1000 - -void read_readability_js(char* string); diff --git a/plugins/readability/readability.js b/plugins/readability/readability.js deleted file mode 100644 index bf7169d..0000000 --- a/plugins/readability/readability.js +++ /dev/null @@ -1,2726 +0,0 @@ -/*eslint-env es6:false*/ -/* - * 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 <a> and <img> 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.firstChild) { - container.appendChild(link.firstChild); - } - 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 <br> elements with a single <p>. - * Whitespace between <br> elements are ignored. For example: - * <div>foo<br>bar<br> <br><br>abc</div> - * will become: - * <div>foo<br>bar<p>abc</p></div> - */ - _replaceBrs: function (elem) { - this._forEachNode(this._getAllNodesWithTag(elem, ["br"]), function (br) { - var next = br.nextSibling; - - // Whether 2 or more <br> elements have been found and replaced with a - // <p> block. - var replaced = false; - - // If we find a <br> chain, remove the <br>s until we hit another node - // or non-whitespace. This leaves behind the first <br> in the chain - // (which will be replaced with a <p> 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 <br> chain, replace the remaining <br> with a <p>. Add - // all sibling nodes as children of the <p> until we hit another <br> - // chain. - if (replaced) { - var p = this._doc.createElement("p"); - br.parentNode.replaceChild(p, br); - - next = p.nextSibling; - while (next) { - // If we've hit another <br><br>, we're done adding children to this <p>. - 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 <p>. - 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 <p> 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; |