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Syntax highlights <code> boxes on the powder toy forums.
// ==UserScript==
// @name TPT Syntax Highlighted Code Boxes
// @version 1.3.0
// @description Syntax highlights <code> boxes on the powder toy forums.
// @author boxmein
// @match *://powdertoy.co.uk/Discussions/Thread/*
// @namespace http://boxmein.net
// ==/UserScript==
// last updated: Tue Dec 02 2014 21:16:57 GMT+0200 (FLE Standard Time)
/*
Note to moderators / anyone interested:
=====
The following libraries are served off of a well-known provider of Javascript
libraries called [cdnjs][1], which happens to be in your whitelist of usable
CDNs.
I have refrained from using @require in the script manifest in order to fully
support Google Chrome, a browser used by more than half of Internet users [(StatCounter Oct 2014)][2].
This is a [known issue][3] which means that @require support has been willingly
left out of Chrome. I hope that this is more than enough reasons to 'break' the
rules of having to use @require.
~boxmein
[1]: http://cdnjs.cloudflare.com
[2]: http://gs.statcounter.com/#desktop-browser-ww-monthly-201410-201410-bar
[3]: http://www.chromium.org/developers/design-documents/user-scripts
*/
// Highlight.js is the highlighting library.
var HLJS = "//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/highlight.min.js";
// Language support for Lua isn't included in ^that distribution by default
var LUA = "//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/languages/lua.min.js";
// Highlight.js only slaps on class names, you also need to style the classes!
var HL_STYLE = "//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/styles/github.min.css";
(function() {
'use strict';
// Don't run inside iframes (Looking at you GreaseMonkey + TinyMCE)
if (window.top !== window.self) return;
// Runs a function in the document. Basically like a Content Script.
// http://wiki.greasespot.net/Content_Script_Injection
function contentEval(source) {
// Check for function input.
if ('function' == typeof source) {
// Execute this function with no arguments, by adding parentheses.
// One set around the function, required for valid syntax, and a
// second empty set calls the surrounded function.
source = '(' + source + ')();'
}
// Create a script node holding this source code.
var script = document.createElement('script');
script.setAttribute("type", "application/javascript");
script.textContent = source;
// Insert the script node into the page, so it will run, and immediately
// remove it to clean up.
document.body.appendChild(script);
//document.body.removeChild(script);
}
// Given a src attribute, makes a <script> tag into the end of <body>
function contentScript(source) {
var tag = document.createElement('script');
tag.setAttribute('type', 'application/javascript');
tag.src = source;
document.body.appendChild(tag);
//document.body.removeChild(tag);
return tag;
}
var hl = contentScript(HLJS);
hl.onload = function() {
// Set an ID, because after *that* loads, hljs is finally ready to highlight
// Lua as well as C++.
var lu = contentScript(LUA);
lu.id = "luaapi";
// Add the CSS for good measure too
var st = document.createElement('link');
st.type = 'text/css';
st.rel = 'stylesheet';
st.href = HL_STYLE;
document.head.appendChild(st);
contentEval(function() {
hljs.configure({useBR: true});
function highlightCode(){
// by default hljs highlights <pre><code>, have to override
var ds = document.querySelectorAll('code');
for(var d = 0; d < ds.length; d++)
window.hljs.highlightBlock(ds[d]);
}
window.highlightCode = highlightCode;
document.getElementById('luaapi').onload = highlightCode;
});
};
})();