Rack rack → 1.1

I have run into situations where I'd like to parse requests in a non-nested fashion. Rack::Request almost lets you do this, but not quite. This commit refactors Rack::Request so that the parsing methods for query strings and multipart data may be overridden.

http://github.com/bahuvrihi/rack/commit/fa29dc523a0994a85686b01a192...

Query Strings

With the patch, you can parse non-nested query strings by subclassing Request to call Utils.parse_query instead of Utils.parse_nested_query.

Multipart Data

Parsing multipart data in a non-nested fashion requires second patch because parse_multipart parses nested queries and you can't get around that. This commit adds a flag to parse_multipart to allow non-nested parsing.

http://github.com/bahuvrihi/rack/commit/d6a2a162651c8068822a9370fe6...

The flag is a little inelegant, but at least it's backwards compatible. A more elegant solution would be to have two methods: parse_multipart and parse_nested_multipart. However, this solution is problematic because it requires surprising, backwards-incompatible flip in the meaning of parse_multipart.

With both patches a non-multipart request class looks like this:

  class NonMultipartRequest < Request
    def parse_query(qs)
      Utils.parse_query(qs)
    end

    def parse_multipart(env)
      Utils::Multipart.parse_multipart(env, false)
    end
  end