All I’ve done so far, is to sit down with the core Python file from Ivan’s package, and slog through converting it brainlessly into rather similar Ruby. Take out “self” and “:” from method definitions, write “nil” instead of “None”, write “end” at the end of each method and class, use Ruby’s iteration idioms, and you’re most of the way there. Of course the fiddly detail is where we use external libraries: for URIs, network access, JSON and XML parsing. I’ve cobbled something together which could be the basis for reconstructing all the original functionality in Ivan’s code. Currently, it’s more proof of concept, but enough to be worth posting.
Files are in SVN and browsable online; there’s also a bundled up download for the curious, brave or helpful. The test script shows all we have at the moment: ability to choose XML or JSON results, and access result set binding rows. Other result formats (notably RDF; there’s no RDF/XML parser currently) aren’t handled, and various bits of the code conversion are incomplete. I’d be super happy if someone came along and helped finish this!
Update: Ruby’s REXML parser is now clumsily wired in; you get get a REXML Document object (see xml.com writeup) as a way of navigating the resultset.