RDoc::RI::Paths

each(system, site, home, gems, *extra_dirs) Link

Iterates over each selected path yielding the directory and type.

Yielded types:

:system: Where Ruby's ri data is stored. Yielded when system is true
:site: Where ri for installed libraries are stored. Yielded when site is true. Normally no ri data is stored here.
:home: ~/.rdoc. Yielded when home is true.
:gem: ri data for an installed gem. Yielded when gems is true.
:extra: ri data directory from the command line. Yielded for each entry in extra_dirs

# File ../ruby/lib/rdoc/ri/paths.rb, line 50
def self.each system, site, home, gems, *extra_dirs # :yields: directory, type
  extra_dirs.each do |dir|
    yield dir, :extra
  end

  yield SYSDIR,  :system if system
  yield SITEDIR, :site   if site
  yield HOMEDIR, :home   if home and HOMEDIR

  gemdirs.each do |dir|
    yield dir, :gem
  end if gems

  nil
end

gemdirs() Link

The latest installed gems' ri directories

Source: show | on GitHub

# File ../ruby/lib/rdoc/ri/paths.rb, line 69
def self.gemdirs
  return @gemdirs if @gemdirs

  require 'rubygems' unless defined?(Gem)

  # HACK dup'd from Gem.latest_partials and friends
  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

path(system, site, home, gems, *extra_dirs) Link

Returns existing directories from the selected documentation directories as an Array.

Module RDoc::RI::Paths