[update] Add code lines

site/public/vendors/highlightjs-line-numbers/highlightjs-line-numbers.js

@@ -0,0 +1,67 @@
+(function (w) {
+	'use strict';
+
+	if (typeof w.hljs === 'undefined') {
+		console.error('highlight.js not detected!');
+	} else {
+		w.hljs.initLineNumbersOnLoad = initLineNumbersOnLoad;
+		w.hljs.lineNumbersBlock = lineNumbersBlock;
+	}
+
+	function initLineNumbersOnLoad () {
+		if (document.readyState === 'complete') {
+			documentReady();
+		} else {
+			w.addEventListener('DOMContentLoaded', documentReady);
+		}
+	}
+
+	function documentReady () {
+		try {
+			var blocks = document.querySelectorAll('code.hljs');
+
+			for (var i in blocks) {
+				if (blocks.hasOwnProperty(i)) {
+					lineNumbersBlock(blocks[i]);
+				}
+			}
+		} catch (e) {
+			console.error('LineNumbers error: ', e);
+		}
+	}
+
+	function lineNumbersBlock (element) {
+		if (typeof element !== 'object') return;
+
+		var parent = element.parentNode;
+		var lines = getCountLines(parent.textContent);
+
+		if (lines > 1) {
+			var l = '';
+			for (var i = 0; i < lines; i++) {
+				l += (i + 1) + '\n';
+			}
+
+			var linesPanel = document.createElement('code');
+			linesPanel.className = 'hljs hljs-line-numbers';
+			linesPanel.style.float = 'left';
+			linesPanel.textContent = l;
+
+			parent.insertBefore(linesPanel, element);
+		}
+	}
+
+	function getCountLines(text) {
+		if (text.length === 0) return 0;
+
+		var regExp = /\r\n|\r|\n/g;
+		var lines = text.match(regExp);
+		lines = lines ? lines.length : 0;
+
+		if (!text[text.length - 1].match(regExp)) {
+			lines += 1;
+		}
+
+		return lines;
+	}
+}(window));