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53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
import { range } from 'utils';
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import {
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NEGATIVE_SCORE_RE,
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POSITIVE_SCORE_RE,
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PAGE_RE,
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} from 'utils/dom/constants';
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import { EXTRANEOUS_LINK_HINTS_RE } from '../constants';
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function makeSig($link) {
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return `${$link.attr('class') || ''} ${$link.attr('id') || ''}`;
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}
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export default function scoreByParents($link) {
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// If a parent node contains paging-like classname or id, give a
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// bonus. Additionally, if a parent_node contains bad content
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// (like 'sponsor'), give a penalty.
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let $parent = $link.parent();
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let positiveMatch = false;
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let negativeMatch = false;
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let score = 0;
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Array.from(range(0, 4)).forEach(() => {
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if ($parent.length === 0) {
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return;
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}
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const parentData = makeSig($parent, ' ');
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// If we have 'page' or 'paging' in our data, that's a good
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// sign. Add a bonus.
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if (!positiveMatch && PAGE_RE.test(parentData)) {
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positiveMatch = true;
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score += 25;
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}
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// If we have 'comment' or something in our data, and
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// we don't have something like 'content' as well, that's
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// a bad sign. Give a penalty.
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if (!negativeMatch && NEGATIVE_SCORE_RE.test(parentData)
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&& EXTRANEOUS_LINK_HINTS_RE.test(parentData)) {
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if (!POSITIVE_SCORE_RE.test(parentData)) {
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negativeMatch = true;
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score -= 25;
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}
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}
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$parent = $parent.parent();
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});
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return score;
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}
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