'use strict';
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var escapeHTML = require('../Utils').escapeHTML;
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/**
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* Create a linkified and HTML escaped entry field description.
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*
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* As a special feature, this description may contain both markdown
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* and plain <a href> links.
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*
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* @param {String} description
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*/
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module.exports = function entryFieldDescription(description) {
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// we tokenize the description to extract text, HTML and markdown links
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// text and links are handled seperately
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var escaped = [];
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// match markdown [{TEXT}]({URL}) and HTML links <a href="{URL}">{TEXT}</a>
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var pattern = /(?:\[([^\]]+)\]\((https?:\/\/[^"<>\]]+)\))|(?:<a href="(https?:\/\/[^"<>]+)">([^<]*)<\/a>)/gi;
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var index = 0;
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var match;
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var link, text;
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while ((match = pattern.exec(description))) {
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// escape + insert text before match
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if (match.index > index) {
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escaped.push(escapeHTML(description.substring(index, match.index)));
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}
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link = match[2] || match[3];
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text = match[1] || match[4];
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// insert safe link
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escaped.push('<a href="' + link + '" target="_blank">' + escapeHTML(text) + '</a>');
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index = match.index + match[0].length;
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}
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// escape and insert text after last match
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if (index < description.length) {
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escaped.push(escapeHTML(description.substring(index)));
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}
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return '<div class="bpp-field-description">' + escaped.join('') + '</div>';
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};
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