class Gem::Commands::RdocCommand

def arguments # :nodoc:
  "GEMNAME       gem to generate documentation for (unless --all)"
end

def defaults_str # :nodoc:
  "--version '#{Gem::Requirement.default}' --ri --no-overwrite"
end

def description # :nodoc:
  <<-DESC
e rdoc command builds documentation for installed gems.  By default
ly documentation is built using rdoc, but additional types of
cumentation may be built through rubygems plugins and the
m.post_installs hook.
e --overwrite to force rebuilding of documentation.
  DESC
end

def execute
  specs = if options[:all] then
            Gem::Specification.to_a
          else
            get_all_gem_names.map do |name|
              Gem::Specification.find_by_name name, options[:version]
            end.flatten.uniq
          end
  if specs.empty? then
    alert_error 'No matching gems found'
    terminate_interaction 1
  end
  specs.each do |spec|
    doc = Gem::RDoc.new spec, options[:include_rdoc], options[:include_ri]
    doc.force = options[:overwrite]
    if options[:overwrite] then
      FileUtils.rm_rf File.join(spec.doc_dir, 'ri')
      FileUtils.rm_rf File.join(spec.doc_dir, 'rdoc')
    end
    begin
      doc.generate
    rescue Errno::ENOENT => e
      e.message =~ / - /
      alert_error "Unable to document #{spec.full_name}, #{$'} is missing, skipping"
      terminate_interaction 1 if specs.length == 1
    end
  end
end

def initialize
  super 'rdoc', 'Generates RDoc for pre-installed gems',
        :version => Gem::Requirement.default,
        :include_rdoc => false, :include_ri => true, :overwrite => false
  add_option('--all',
             'Generate RDoc/RI documentation for all',
             'installed gems') do |value, options|
    options[:all] = value
  end
  add_option('--[no-]rdoc',
             'Generate RDoc HTML') do |value, options|
    options[:include_rdoc] = value
  end
  add_option('--[no-]ri',
             'Generate RI data') do |value, options|
    options[:include_ri] = value
  end
  add_option('--[no-]overwrite',
             'Overwrite installed documents') do |value, options|
    options[:overwrite] = value
  end
  add_version_option
end

def usage # :nodoc:
  "#{program_name} [args]"
end