RDoc::RI::Paths

    # File lib/rdoc/ri/paths.rb, line 45
45:   def self.each system, site, home, gems, *extra_dirs # :yields: directory, type
46:     extra_dirs.each do |dir|
47:       yield dir, :extra
48:     end
49: 
50:     yield SYSDIR,  :system if system
51:     yield SITEDIR, :site   if site
52:     yield HOMEDIR, :home   if home
53: 
54:     gemdirs.each do |dir|
55:       yield dir, :gem
56:     end if gems
57: 
58:     nil
59:   end

    # File lib/rdoc/ri/paths.rb, line 64
64:   def self.gemdirs
65:     return @gemdirs if @gemdirs
66: 
67:     require 'rubygems' unless defined?(Gem)
68: 
69:     # HACK dup'd from Gem.latest_partials and friends
70:     all_paths = []
71: 
72:     all_paths = Gem.path.map do |dir|
73:       Dir[File.join(dir, 'doc', '*', 'ri')]
74:     end.flatten
75: 
76:     ri_paths = {}
77: 
78:     all_paths.each do |dir|
79:       base = File.basename File.dirname(dir)
80:       if base =~ /(.*)-((\d+\.)*\d+)/ then
81:         name, version = $1, $2
82:         ver = Gem::Version.new version
83:         if ri_paths[name].nil? or ver > ri_paths[name][0] then
84:           ri_paths[name] = [ver, dir]
85:         end
86:       end
87:     end
88: 
89:     @gemdirs = ri_paths.map { |k,v| v.last }.sort
90:   rescue LoadError
91:     @gemdirs = []
92:   end

     # File lib/rdoc/ri/paths.rb, line 100
100:   def self.path(system, site, home, gems, *extra_dirs)
101:     path = raw_path system, site, home, gems, *extra_dirs
102: 
103:     path.select { |directory| File.directory? directory }
104:   end

     # File lib/rdoc/ri/paths.rb, line 112
112:   def self.raw_path(system, site, home, gems, *extra_dirs)
113:     path = []
114: 
115:     each(system, site, home, gems, *extra_dirs) do |dir, type|
116:       path << dir
117:     end
118: 
119:     path.compact
120:   end