From: Tim Düsterhus <duesterhus@woltlab.com>
Date: Tue, 20 Nov 2018 20:20:13 +0000 (+0100)
Subject: Add WoltLabSuite/Core/Prism
X-Git-Tag: 5.2.0_Alpha_1~420^2~5^2~19
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cf10f7b78b4148f4582d47e0fcc9cee4aa1aaa82;p=GitHub%2FWoltLab%2FWCF.git

Add WoltLabSuite/Core/Prism

see #2752
---

diff --git a/wcfsetup/install/files/js/WoltLabSuite/Core/Prism.js b/wcfsetup/install/files/js/WoltLabSuite/Core/Prism.js
new file mode 100644
index 0000000000..76195f8929
--- /dev/null
+++ b/wcfsetup/install/files/js/WoltLabSuite/Core/Prism.js
@@ -0,0 +1,71 @@
+/**
+ * Augments the Prism syntax highlighter with additional functions.
+ * 
+ * @author	Tim Duesterhus
+ * @copyright	2001-2018 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @module	WoltLabSuite/Core/Prism
+ */
+
+window.Prism = window.Prism || {}
+window.Prism.manual = true
+
+define(['prism/prism'], function () {
+	Prism.highlightSeparateLines = function (text, language) {
+		var	frag = new DocumentFragment(),
+			lineNo = 1,
+			it, node, line, grammar, container;
+		
+		function newLine() {
+			var line = elCreate('span');
+			elData(line, 'number', lineNo++);
+			frag.appendChild(line);
+			
+			return line;
+		}
+		
+		function highlightStringIntoContainer() {
+			var container = elCreate('div');
+			container.innerHTML = Prism.highlight(text, grammar, language);
+			return container;
+		}
+		
+		grammar = Prism.languages[language];
+		if (!grammar) {
+			throw new Error('Invalid language ' + language + ' given.');
+		}
+		
+		container = highlightStringIntoContainer();
+		it = document.createNodeIterator(container, NodeFilter.SHOW_TEXT);
+		
+		line = newLine(lineNo);
+		while (node = it.nextNode()) {
+			node.data.split(/\r?\n/).forEach(function (codeLine, index) {
+				var current, parent;
+				
+				// We are behind a newline, insert \n and create new container.
+				if (index >= 1) {
+					line.appendChild(document.createTextNode("\n"));
+					line = newLine(lineNo);
+				}
+				
+				current = document.createTextNode(codeLine);
+				
+				// Copy hierarchy (to preserve CSS classes).
+				parent = node.parentNode
+				while (parent !== container) {
+					var clone = parent.cloneNode(false);
+					clone.appendChild(current);
+					current = clone;
+					parent = parent.parentNode;
+				}
+				
+				line.appendChild(current);
+			});
+		}
+		
+		return frag;
+	};
+
+	return Prism;
+})
diff --git a/wcfsetup/install/files/js/require.config.js b/wcfsetup/install/files/js/require.config.js
index e9e544b71e..1986a37789 100644
--- a/wcfsetup/install/files/js/require.config.js
+++ b/wcfsetup/install/files/js/require.config.js
@@ -3,7 +3,8 @@ requirejs.config({
 	paths: {
 		enquire: '3rdParty/enquire',
 		favico: '3rdParty/favico',
-		'perfect-scrollbar': '3rdParty/perfect-scrollbar'
+		'perfect-scrollbar': '3rdParty/perfect-scrollbar',
+		prism: '3rdParty/prism',
 	},
 	shim: {
 		enquire: { exports: 'enquire' },