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bc74c89e76
closes #4741 - updated regexp to properly filter out footnotes without removing too much text - happened only when a link was used before a footnote - old regexp was too 'greedy' and removed regular link together with the footnote - new regexp uses a more specific <a> tag
42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
// # Excerpt Helper
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// Usage: `{{excerpt}}`, `{{excerpt words="50"}}`, `{{excerpt characters="256"}}`
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//
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// Attempts to remove all HTML from the string, and then shortens the result according to the provided option.
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//
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// Defaults to words="50"
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var hbs = require('express-hbs'),
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_ = require('lodash'),
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downsize = require('downsize'),
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excerpt;
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excerpt = function (options) {
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var truncateOptions = (options || {}).hash || {},
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excerpt;
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truncateOptions = _.pick(truncateOptions, ['words', 'characters']);
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_.keys(truncateOptions).map(function (key) {
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truncateOptions[key] = parseInt(truncateOptions[key], 10);
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});
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/*jslint regexp:true */
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excerpt = String(this.html);
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// Strip inline and bottom footnotes
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excerpt = excerpt.replace(/<a href="#fn.*?rel="footnote">.*?<\/a>/gi, '');
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excerpt = excerpt.replace(/<div class="footnotes"><ol>.*?<\/ol><\/div>/, '');
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// Strip other html
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excerpt = excerpt.replace(/<\/?[^>]+>/gi, '');
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excerpt = excerpt.replace(/(\r\n|\n|\r)+/gm, ' ');
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/*jslint regexp:false */
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if (!truncateOptions.words && !truncateOptions.characters) {
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truncateOptions.words = 50;
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}
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return new hbs.handlebars.SafeString(
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downsize(excerpt, truncateOptions)
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);
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};
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module.exports = excerpt;
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