def self.gemdirs
return @gemdirs if @gemdirs
require 'rubygems' unless defined?(Gem)
all_paths = []
all_paths = Gem.path.map do |dir|
Dir[File.join(dir, 'doc', '*', 'ri')]
end.flatten
ri_paths = {}
all_paths.each do |dir|
base = File.basename File.dirname(dir)
if base =~ /(.*)-((\d+\.)*\d+)/ then
name, version = $1, $2
ver = Gem::Version.new version
if ri_paths[name].nil? or ver > ri_paths[name][0] then
ri_paths[name] = [ver, dir]
end
end
end
@gemdirs = ri_paths.map { |k,v| v.last }.sort
rescue LoadError
@gemdirs = []
end