Online service for Ruby code highlighting with html output

I write articles about ROR with a lot of Ruby code inside.

I need an online service such as tohtml.com to make my code insertions beatiful. This resource fine, but it is quite simple and not allow to show numbers of line. Of course output s开发者_如何学Pythonhould be in HTML format.

Could you help me?

it called http://pygments.appspot.com/ Ryan Bates made a railscast to shouw howto highlight a ruby code anysc with Redis. background processing is really useful for such kind of tasks.