Rakefile

require 'hoe'

SUPPORTED_VERSIONS = %w[1.8.7-p374 1.9.3-p551 2.0.0-p647 2.1.8 2.2.4 2.3.0]

hoe = Hoe.spec 'rdoc-data' do
  developer 'Eric Hodel', 'drbrain@segment7.net'
  developer 'Zachary Scott', 'mail@zzak.io'

  clean_globs.push 'data'

  spec_extras[:post_install_message] = <<-EOF
rdoc-data is only required for C ruby 1.8.7 or 1.9.1.

rdoc-data is required for JRuby.

To install ri data for RDoc 4.0+ run:

  rdoc-data --install

  EOF

  license 'MIT'

  extra_deps << ['rdoc', '~> 4.0']
end

desc "Generates ri data"
task :generate => :build_ri_data do
  files = Dir['data/**/*.ri']
  hoe.spec.files += files # #files is not cached, so we must assign

  dirs = nil
  cd 'data' do dirs = Dir['*'] end

  hoe.spec.description << "\n\nIncludes data for #{dirs.join ', '}"
end

task :gem => :generate

path = "pkg/#{hoe.spec.full_name}"
task path => :generate do
  cp_r 'data', path
end

desc "Builds ri data for each supported ruby version"
task :build_ri_data => [:data] do
  data_dir = File.expand_path 'data'

  Dir[File.expand_path('rubies/*')].each do |dir|
    build_name   = File.basename dir
    data_name    = build_name.sub(/-p\d+/, '')

    rdoc_bin_path = "rdoc"

    rdoc_dir = "#{data_dir}/#{data_name}"

    next if File.exist? rdoc_dir

    cd dir do
      sh rdoc_bin_path, '--all', '--ri', '--op', rdoc_dir, '.'
    end
  end
end

directory 'data' => SUPPORTED_VERSIONS

SUPPORTED_VERSIONS.each do |version|
  stripped = version.split("-p")[0]
  minor = stripped[0..-3]

  task version => "rubies/#{minor}"
  directory "rubies/#{minor}" do
    ftp = "http://ftp.ruby-lang.org/pub/ruby"
    sh "mkdir -p rubies"

    cd "rubies" do
      sh "curl #{ftp}/#{minor}/ruby-#{version}.tar.gz | tar xz"
      sh "mv ruby-#{version} #{minor}"
      cd minor do
        sh "mkdir build"
        sh "autoconf"
        cd "build" do
          sh "../configure --disable-install-doc"
          sh "make -j4"
        end
      end
    end
  end
end