Ruby markup parser for custom markup language

I am looking for a Ruby markup parser (or helper) to开发者_JS百科 convert a custom markup language to HTML. Something like Decoda does in the PHP world (see $code->addMarkup() function). Is there a good tool in the Ruby world?

Happy to be educated otherwise, but I'm afraid I don't think such a thing exists - someone would have had to have needed a parser (or parser-generator, perhaps) for multiple unspecified future markup languages. Probably not a need that's been experienced very often. Or ever.

However, if your language is fairly regular, I don't see that it's going to be too much more of a task to build your own parser using tools that are available.

Some places you might start:

• Treetop
• Dhaka
• Racc (distributed in the Ruby standard library)

redcloth for textile http://redcloth.org/

bluecloth for markdown http://deveiate.org/projects/BlueCloth

personally, i like textile.