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Update Readability from mozilla-central release branch (FF 66.0.3). Tag #361.

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Ascrod 2019-04-23 17:41:09 -04:00 • committed by Roy Tam
commit 5252a0779a
3 changed files with 235 additions and 166 deletions
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8
toolkit/components/reader/JSDOMParser.js
View file

@ -691,7 +691,7 @@
// the attribute value will be HTML escaped.
var val = attr.value;
var quote = (val.indexOf('"') === -1 ? '"' : "'");
arr.push(" " + attr.name + '=' + quote + val + quote);
arr.push(" " + attr.name + "=" + quote + val + quote);
}
if (child.localName in voidElems && !child.childNodes.length) {
@ -970,7 +970,7 @@
strBuf.push(c);
c = this.nextChar();
}
var tag = strBuf.join('');
var tag = strBuf.join("");
if (!tag)
return false;
@ -981,7 +981,9 @@
while (c !== "/" && c !== ">") {
if (c === undefined)
return false;
while (whitespace.indexOf(this.html[this.currentChar++]) != -1);
while (whitespace.indexOf(this.html[this.currentChar++]) != -1) {
// Advance cursor to first non-whitespace char.
}
this.currentChar--;
c = this.nextChar();
if (c !== "/" && c !== ">") {

104
toolkit/components/reader/Readability-readerable.js Normal file
View file

@ -0,0 +1,104 @@
/* eslint-env es6:false */
/* globals exports */
/*
* DO NOT MODIFY THIS FILE DIRECTLY!
*
* This is a shared library that is maintained in an external repo:
* https://github.com/mozilla/readability
*/
/*
* 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
*/
var REGEXPS = {
// NOTE: These two regular expressions are duplicated in
// Readability.js. Please keep both copies in sync.
unlikelyCandidates: /-ad-|banner|breadcrumbs|combx|comment|community|cover-wrap|disqus|extra|foot|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|main|shadow/i,
};
function isNodeVisible(node) {
// Have to null-check node.style to deal with SVG and MathML nodes.
return (!node.style || node.style.display != "none") && !node.hasAttribute("hidden");
}
/**
* Decides whether or not the document is reader-able without parsing the whole thing.
*
* @return boolean Whether or not we suspect Readability.parse() will suceeed at returning an article object.
*/
function isProbablyReaderable(doc, isVisible) {
if (!isVisible) {
isVisible = isNodeVisible;
}
var nodes = doc.querySelectorAll("p, pre");
// Get <div> nodes which have <br> node(s) and append them into the `nodes` variable.
// Some articles' DOM structures might look like
// <div>
// Sentences<br>
// <br>
// Sentences<br>
// </div>
var brNodes = doc.querySelectorAll("div > br");
if (brNodes.length) {
var set = new Set(nodes);
[].forEach.call(brNodes, function(node) {
set.add(node.parentNode);
});
nodes = Array.from(set);
}
var score = 0;
// This is a little cheeky, we use the accumulator 'score' to decide what to return from
// this callback:
return [].some.call(nodes, function(node) {
if (!isVisible(node))
return false;
var matchString = node.className + " " + node.id;
if (REGEXPS.unlikelyCandidates.test(matchString) &&
!REGEXPS.okMaybeItsACandidate.test(matchString)) {
return false;
}
if (node.matches("li p")) {
return false;
}
var textContentLength = node.textContent.trim().length;
if (textContentLength < 140) {
return false;
}
score += Math.sqrt(textContentLength - 140);
if (score > 20) {
return true;
}
return false;
});
}
if (typeof exports === "object") {
exports.isProbablyReaderable = isProbablyReaderable;
}

293
toolkit/components/reader/Readability.js
View file

@ -46,6 +46,7 @@ function Readability(doc, options) {
this._articleTitle = null;
this._articleByline = null;
this._articleDir = null;
this._articleSiteName = null;
this._attempts = [];
// Configurable options
@ -118,15 +119,18 @@ Readability.prototype = {
// 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-|banner|breadcrumbs|combx|comment|community|cover-wrap|disqus|extra|foot|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|main|shadow/i,
positive: /article|body|content|entry|hentry|h-entry|main|page|pagination|post|text|blog|story/i,
negative: /hidden|^hid$| hid$| hid |^hid |banner|combx|comment|com-|contact|foot|footer|footnote|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)\.com/i,
videos: /\/\/(www\.)?((dailymotion|youtube|youtube-nocookie|player\.vimeo|v\.qq)\.com|(archive|upload\.wikimedia)\.org|player\.twitch\.tv)/i,
nextLink: /(next|weiter|continue|>([^\|]|$)|»([^\|]|$))/i,
prevLink: /(prev|earl|old|new|<|«)/i,
whitespace: /^\s*$/,
@ -267,7 +271,7 @@ Readability.prototype = {
_getAllNodesWithTag: function(node, tagNames) {
if (node.querySelectorAll) {
return node.querySelectorAll(tagNames.join(','));
return node.querySelectorAll(tagNames.join(","));
}
return [].concat.apply([], tagNames.map(function(tag) {
var collection = node.getElementsByTagName(tag);
@ -327,7 +331,7 @@ Readability.prototype = {
return uri;
}
var links = articleContent.getElementsByTagName("a");
var links = this._getAllNodesWithTag(articleContent, ["a"]);
this._forEachNode(links, function(link) {
var href = link.getAttribute("href");
if (href) {
@ -342,7 +346,7 @@ Readability.prototype = {
}
});
var imgs = articleContent.getElementsByTagName("img");
var imgs = this._getAllNodesWithTag(articleContent, ["img"]);
this._forEachNode(imgs, function(img) {
var src = img.getAttribute("src");
if (src) {
@ -366,7 +370,7 @@ Readability.prototype = {
// If they had an element with id "title" in their HTML
if (typeof curTitle !== "string")
curTitle = origTitle = this._getInnerText(doc.getElementsByTagName('title')[0]);
curTitle = origTitle = this._getInnerText(doc.getElementsByTagName("title")[0]);
} catch (e) {/* ignore exceptions setting the title. */}
var titleHadHierarchicalSeparators = false;
@ -377,18 +381,18 @@ Readability.prototype = {
// If there's a separator in the title, first remove the final part
if ((/ [\|\-\\\/>»] /).test(curTitle)) {
titleHadHierarchicalSeparators = / [\\\/>»] /.test(curTitle);
curTitle = origTitle.replace(/(.*)[\|\-\\\/>»] .*/gi, '$1');
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) {
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')
doc.getElementsByTagName("h1"),
doc.getElementsByTagName("h2")
);
var trimmedTitle = curTitle.trim();
var match = this._someNode(headings, function(heading) {
@ -397,25 +401,25 @@ Readability.prototype = {
// If we don't, let's extract the title out of the original title string.
if (!match) {
curTitle = origTitle.substring(origTitle.lastIndexOf(':') + 1);
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);
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) {
} else if (wordCount(origTitle.substr(0, origTitle.indexOf(":"))) > 5) {
curTitle = origTitle;
}
}
} else if (curTitle.length > 150 || curTitle.length < 15) {
var hOnes = doc.getElementsByTagName('h1');
var hOnes = doc.getElementsByTagName("h1");
if (hOnes.length === 1)
curTitle = this._getInnerText(hOnes[0]);
}
curTitle = curTitle.trim();
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
@ -505,7 +509,8 @@ Readability.prototype = {
break;
}
if (!this._isPhrasingContent(next)) break;
if (!this._isPhrasingContent(next))
break;
// Otherwise, make this node a child of the new <p>.
var sibling = next.nextSibling;
@ -513,9 +518,12 @@ Readability.prototype = {
next = sibling;
}
while (p.lastChild && this._isWhitespace(p.lastChild)) p.removeChild(p.lastChild);
while (p.lastChild && this._isWhitespace(p.lastChild)) {
p.removeChild(p.lastChild);
}
if (p.parentNode.tagName === "P") this._setNodeTag(p.parentNode, "DIV");
if (p.parentNode.tagName === "P")
this._setNodeTag(p.parentNode, "DIV");
}
});
},
@ -576,7 +584,7 @@ Readability.prototype = {
// If there is only one h2 and its text content substantially equals article title,
// they are probably using it as a header and not a subheader,
// so remove it since we already extract the title separately.
var h2 = articleContent.getElementsByTagName('h2');
var h2 = articleContent.getElementsByTagName("h2");
if (h2.length === 1) {
var lengthSimilarRate = (h2[0].textContent.length - this._articleTitle.length) / this._articleTitle.length;
if (Math.abs(lengthSimilarRate) < 0.5) {
@ -606,12 +614,12 @@ Readability.prototype = {
this._cleanConditionally(articleContent, "div");
// Remove extra paragraphs
this._removeNodes(articleContent.getElementsByTagName('p'), function (paragraph) {
var imgCount = paragraph.getElementsByTagName('img').length;
var embedCount = paragraph.getElementsByTagName('embed').length;
var objectCount = paragraph.getElementsByTagName('object').length;
this._removeNodes(articleContent.getElementsByTagName("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 iframeCount = paragraph.getElementsByTagName("iframe").length;
var totalCount = imgCount + embedCount + objectCount + iframeCount;
return totalCount === 0 && !this._getInnerText(paragraph, false);
@ -648,34 +656,34 @@ Readability.prototype = {
node.readability = {"contentScore": 0};
switch (node.tagName) {
case 'DIV':
case "DIV":
node.readability.contentScore += 5;
break;
case 'PRE':
case 'TD':
case 'BLOCKQUOTE':
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':
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':
case "H1":
case "H2":
case "H3":
case "H4":
case "H5":
case "H6":
case "TH":
node.readability.contentScore -= 5;
break;
}
@ -824,12 +832,14 @@ Readability.prototype = {
if (p !== null) {
p.appendChild(childNode);
} else if (!this._isWhitespace(childNode)) {
p = doc.createElement('p');
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);
while (p.lastChild && this._isWhitespace(p.lastChild)) {
p.removeChild(p.lastChild);
}
p = null;
}
childNode = nextSibling;
@ -860,7 +870,7 @@ Readability.prototype = {
**/
var candidates = [];
this._forEachNode(elementsToScore, function(elementToScore) {
if (!elementToScore.parentNode || typeof(elementToScore.parentNode.tagName) === 'undefined')
if (!elementToScore.parentNode || typeof(elementToScore.parentNode.tagName) === "undefined")
return;
// If this paragraph is less than 25 characters, don't even count it.
@ -879,17 +889,17 @@ Readability.prototype = {
contentScore += 1;
// Add points for any commas within this paragraph.
contentScore += innerText.split(',').length;
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')
if (!ancestor.tagName || !ancestor.parentNode || typeof(ancestor.parentNode.tagName) === "undefined")
return;
if (typeof(ancestor.readability) === 'undefined') {
if (typeof(ancestor.readability) === "undefined") {
this._initializeNode(ancestor);
candidates.push(ancestor);
}
@ -920,7 +930,7 @@ Readability.prototype = {
var candidateScore = candidate.readability.contentScore * (1 - this._getLinkDensity(candidate));
candidate.readability.contentScore = candidateScore;
this.log('Candidate:', candidate, "with score " + candidateScore);
this.log("Candidate:", candidate, "with score " + candidateScore);
for (var t = 0; t < this._nbTopCandidates; t++) {
var aTopCandidate = topCandidates[t];
@ -1039,8 +1049,8 @@ Readability.prototype = {
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');
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;
@ -1074,7 +1084,7 @@ Readability.prototype = {
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.');
this.log("Altering sibling:", sibling, "to div.");
sibling = this._setNodeTag(sibling, "DIV");
}
@ -1142,7 +1152,7 @@ Readability.prototype = {
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 a.textLength < b.textLength;
return b.textLength - a.textLength;
});
// But first check if we actually have something
@ -1182,7 +1192,7 @@ Readability.prototype = {
* @return Boolean - whether the input string is a byline.
*/
_isValidByline: function(byline) {
if (typeof byline == 'string' || byline instanceof String) {
if (typeof byline == "string" || byline instanceof String) {
byline = byline.trim();
return (byline.length > 0) && (byline.length < 100);
}
@ -1199,61 +1209,72 @@ Readability.prototype = {
var values = {};
var metaElements = this._doc.getElementsByTagName("meta");
// Match "description", or Twitter's "twitter:description" (Cards)
// in name attribute.
var namePattern = /^\s*((twitter)\s*:\s*)?(description|title)\s*$/gi;
// 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;
// Match Facebook's Open Graph title & description properties.
var propertyPattern = /^\s*og\s*:\s*(description|title)\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");
if ([elementName, elementProperty].indexOf("author") !== -1) {
metadata.byline = element.getAttribute("content");
return;
}
var content = element.getAttribute("content");
var matches = null;
var name = null;
if (namePattern.test(elementName)) {
name = elementName;
} else if (propertyPattern.test(elementProperty)) {
name = elementProperty;
}
if (name) {
var content = element.getAttribute("content");
if (elementProperty) {
matches = elementProperty.match(propertyPattern);
if (matches) {
for (var i = matches.length - 1; i >= 0; i--) {
// Convert to lowercase, and remove any whitespace
// so we can match below.
name = matches[i].toLowerCase().replace(/\s/g, "");
// multiple authors
values[name] = content.trim();
}
}
}
if (!matches && elementName && namePattern.test(elementName)) {
name = elementName;
if (content) {
// Convert to lowercase and remove any whitespace
// so we can match below.
name = name.toLowerCase().replace(/\s/g, '');
// 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();
}
}
});
if ("description" in values) {
metadata.excerpt = values["description"];
} else if ("og:description" in values) {
// Use facebook open graph description.
metadata.excerpt = values["og:description"];
} else if ("twitter:description" in values) {
// Use twitter cards description.
metadata.excerpt = values["twitter:description"];
// get title
metadata.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();
}
metadata.title = this._getArticleTitle();
if (!metadata.title) {
if ("og:title" in values) {
// Use facebook open graph title.
metadata.title = values["og:title"];
} else if ("twitter:title" in values) {
// Use twitter cards title.
metadata.title = values["twitter:title"];
}
}
// get author
metadata.byline = values["dc:creator"] ||
values["dcterm:creator"] ||
values["author"];
// get description
metadata.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 = values["og:site_name"];
return metadata;
},
@ -1264,12 +1285,12 @@ Readability.prototype = {
* @param Element
**/
_removeScripts: function(doc) {
this._removeNodes(doc.getElementsByTagName('script'), function(scriptNode) {
this._removeNodes(doc.getElementsByTagName("script"), function(scriptNode) {
scriptNode.nodeValue = "";
scriptNode.removeAttribute('src');
scriptNode.removeAttribute("src");
return true;
});
this._removeNodes(doc.getElementsByTagName('noscript'));
this._removeNodes(doc.getElementsByTagName("noscript"));
},
/**
@ -1336,7 +1357,7 @@ Readability.prototype = {
* @return string
**/
_getInnerText: function(e, normalizeSpaces) {
normalizeSpaces = (typeof normalizeSpaces === 'undefined') ? true : normalizeSpaces;
normalizeSpaces = (typeof normalizeSpaces === "undefined") ? true : normalizeSpaces;
var textContent = e.textContent.trim();
if (normalizeSpaces) {
@ -1365,7 +1386,7 @@ Readability.prototype = {
* @return void
**/
_cleanStyles: function(e) {
if (!e || e.tagName.toLowerCase() === 'svg')
if (!e || e.tagName.toLowerCase() === "svg")
return;
// Remove `style` and deprecated presentational attributes
@ -1374,8 +1395,8 @@ Readability.prototype = {
}
if (this.DEPRECATED_SIZE_ATTRIBUTE_ELEMS.indexOf(e.tagName) !== -1) {
e.removeAttribute('width');
e.removeAttribute('height');
e.removeAttribute("width");
e.removeAttribute("height");
}
var cur = e.firstElementChild;
@ -1421,7 +1442,7 @@ Readability.prototype = {
var weight = 0;
// Look for a special classname
if (typeof(e.className) === 'string' && e.className !== '') {
if (typeof(e.className) === "string" && e.className !== "") {
if (this.REGEXPS.negative.test(e.className))
weight -= 25;
@ -1430,7 +1451,7 @@ Readability.prototype = {
}
// Look for a special ID
if (typeof(e.id) === 'string' && e.id !== '') {
if (typeof(e.id) === "string" && e.id !== "") {
if (this.REGEXPS.negative.test(e.id))
weight -= 25;
@ -1619,7 +1640,7 @@ Readability.prototype = {
return true;
}
if (this._getCharCount(node, ',') < 10) {
if (this._getCharCount(node, ",") < 10) {
// If there are not very many commas, and the number of
// non-paragraph elements is more than paragraphs or other
// ominous signs, remove the element.
@ -1679,7 +1700,7 @@ Readability.prototype = {
**/
_cleanHeaders: function(e) {
for (var headerIndex = 1; headerIndex < 3; headerIndex += 1) {
this._removeNodes(e.getElementsByTagName('h' + headerIndex), function (header) {
this._removeNodes(e.getElementsByTagName("h" + headerIndex), function (header) {
return this._getClassWeight(header) < 0;
});
}
@ -1694,66 +1715,7 @@ Readability.prototype = {
},
_isProbablyVisible: function(node) {
return node.style.display != "none" && !node.hasAttribute("hidden");
},
/**
* Decides whether or not the document is reader-able without parsing the whole thing.
*
* @return boolean Whether or not we suspect parse() will suceeed at returning an article object.
*/
isProbablyReaderable: function(helperIsVisible) {
var nodes = this._getAllNodesWithTag(this._doc, ["p", "pre"]);
// Get <div> nodes which have <br> node(s) and append them into the `nodes` variable.
// Some articles' DOM structures might look like
// <div>
// Sentences<br>
// <br>
// Sentences<br>
// </div>
var brNodes = this._getAllNodesWithTag(this._doc, ["div > br"]);
if (brNodes.length) {
var set = new Set();
[].forEach.call(brNodes, function(node) {
set.add(node.parentNode);
});
nodes = [].concat.apply(Array.from(set), nodes);
}
if (!helperIsVisible) {
helperIsVisible = this._isProbablyVisible;
}
var score = 0;
// This is a little cheeky, we use the accumulator 'score' to decide what to return from
// this callback:
return this._someNode(nodes, function(node) {
if (helperIsVisible && !helperIsVisible(node))
return false;
var matchString = node.className + " " + node.id;
if (this.REGEXPS.unlikelyCandidates.test(matchString) &&
!this.REGEXPS.okMaybeItsACandidate.test(matchString)) {
return false;
}
if (node.matches && node.matches("li p")) {
return false;
}
var textContentLength = node.textContent.trim().length;
if (textContentLength < 140) {
return false;
}
score += Math.sqrt(textContentLength - 140);
if (score > 20) {
return true;
}
return false;
});
return (!node.style || node.style.display != "none") && !node.hasAttribute("hidden");
},
/**
@ -1812,6 +1774,7 @@ Readability.prototype = {
textContent: textContent,
length: textContent.length,
excerpt: metadata.excerpt,
siteName: metadata.siteName || this._articleSiteName
};
}
};