Rainbow is a code syntax highlighting library written in Javascript.
It was designed to be lightweight (1.4kb), easy to use, and extendable.
It is completely themable via CSS.
-
Include some markup for code you want to be highlighted:
<pre><code data-language="python">def openFile(path): file = open(path, "r") content = file.read() file.close() return content</code></pre>
-
Include a CSS theme file in the
<head>:<link href="/assets/css/theme.css" rel="stylesheet" type="text/css">
-
Include rainbow.js and whatever languages you want before the closing
</body>:<script src="/assets/js/rainbow.min.js"></script> <script src="/assets/js/language/generic.js"></script> <script src="/assets/js/language/python.js"></script>
If you have a language specific pattern that you want highlighted, but it does not exist in the language syntax rules you can add a rule on your page.
Let's say for example you want to reference PHP's apc functions. You can include the php language then in the markup on your page add:
<script>
Rainbow.extend('php', [
{
'matches': {
1: 'support.function'
},
'pattern': /\b(apc_(store|fetch|add|inc))(?=\()/g
}
]);
</script>Currently supported languages are:
- Javascript
- HTML
- CSS
- PHP
- Python
- Ruby
- C
- Shell
- Scheme
- Lua
- C#
You can check out additional documentation and build custom packages at rainbowco.de.