All: Use Lerna to manage monorepo

packages/renderer/stringUtils.js

@@ -0,0 +1,86 @@
+const Entities = require('html-entities').AllHtmlEntities;
+const htmlentities = new Entities().encode;
+
+function pregQuote(str, delimiter = '') {
+	return (`${str}`).replace(new RegExp(`[.\\\\+*?\\[\\^\\]$(){}=!<>|:\\${delimiter || ''}-]`, 'g'), '\\$&');
+}
+
+function replaceRegexDiacritics(regexString) {
+	if (!regexString) return '';
+
+	const diacriticReplacements = {
+		a: '[aàáâãäåāą]',
+		A: '[AÀÁÂÃÄÅĀĄ]',
+		c: '[cçćč]',
+		C: '[CÇĆČ]',
+		d: '[dđď]',
+		D: '[DĐĎ]',
+		e: '[eèéêëěēę]',
+		E: '[EÈÉÊËĚĒĘ]',
+		i: '[iìíîïī]',
+		I: '[IÌÍÎÏĪ]',
+		l: '[lł]',
+		L: '[LŁ]',
+		n: '[nñňń]',
+		N: '[NÑŇŃ]',
+		o: '[oòóôõöøō]',
+		O: '[OÒÓÔÕÖØŌ]',
+		r: '[rř]',
+		R: '[RŘ]',
+		s: '[sšś]',
+		S: '[SŠŚ]',
+		t: '[tť]',
+		T: '[TŤ]',
+		u: '[uùúûüůū]',
+		U: '[UÙÚÛÜŮŪ]',
+		y: '[yÿý]',
+		Y: '[YŸÝ]',
+		z: '[zžżź]',
+		Z: '[ZŽŻŹ]',
+	};
+
+	let output = '';
+	for (let i = 0; i < regexString.length; i++) {
+		const c = regexString[i];
+		const r = diacriticReplacements[c];
+		if (r) {
+			output += r;
+		} else {
+			output += c;
+		}
+	}
+
+	return output;
+}
+
+// keywords can either be a list of strings, or a list of objects with the format:
+// { value: 'actualkeyword', type: 'regex/string' }
+// The function surrounds the keywords wherever they are, even within other words.
+function surroundKeywords(keywords, text, prefix, suffix, options = null) {
+	options = Object.assign({}, {
+		escapeHtml: false,
+	}, options);
+
+	if (!keywords.length) return text;
+
+	function escapeHtml(s) {
+		if (!options.escapeHtml) return s;
+		return htmlentities(s);
+	}
+
+	let regexString = keywords
+		.map(k => {
+			if (k.type === 'regex') {
+				return escapeHtml(replaceRegexDiacritics(k.valueRegex));
+			} else {
+				const value = typeof k === 'string' ? k : k.value;
+				return escapeHtml(replaceRegexDiacritics(pregQuote(value)));
+			}
+		})
+		.join('|');
+	regexString = `(${regexString})`;
+	const re = new RegExp(regexString, 'gi');
+	return text.replace(re, `${prefix}$1${suffix}`);
+}
+
+module.exports = { surroundKeywords };