Question

I’ve inherited a small obj-C utility app that acts as a wrapper around a ruby script (which is obviously included as a resource in the application).

The helper ruby script, though, requires the json gem. What’s the best way to include the gem (and the gem’s dependencies) within the app?

I could have the application run a check when it loads to see if the gem is installed and then gem install it, but I thought there might be a more elegant solution.

Answer 1

The first step is to check if the json gem has any dependencies:

$ gem dependency json

The version I have installed has no dependencies, so then you need to get a copy of the gem into your bundle.

$ cd /my/project/resources
$ gem unpack json

Then, to require it, you can use the line:

require File.join(File.dirname(__FILE__), 'json-VERSION','lib','json')

replacing VERSION with the gem version.