A gem for analyzing how much of your Ruby code is documented with Rdoc.
Developed by Chris Powers (github.com/chrisjpowers)
Version 0.1 – September 10, 2009
The RdocMetric class parses through ruby files and determines how well documented they are. It looks for an rdoc comment for each class, module, method, attribute and constant declaration to determine if documentation exists.
The gem installs the rdoc_metric command line program. You can use it without any arguments to parse all the ruby files in the current directory and all subdirectories, or you can pass it specific paths:
$ rdoc_metric my_app/app/models # only parses .rb files in models dir
or multiple dirs
$ cd my_app && rdoc_metric app lib # parse .rb files in app and in lib
So far this is a very rudimentary implementation, so please feel free to fork and improve!