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