Class: Gem::Commands::UpdateCommand

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# File 'lib/rubygems/commands/update_command.rb', line 39

def defaults_str # :nodoc:
  "--rdoc --ri --no-force --no-test --install-dir #{Gem.dir}"
end

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# File 'lib/rubygems/commands/update_command.rb', line 140

def do_rubygems_update(version)
  args = []
  args.push '--prefix', Gem.prefix unless Gem.prefix.nil?
  args << '--no-rdoc' unless options[:generate_rdoc]
  args << '--no-ri' unless options[:generate_ri]
  args << '--no-format-executable' if options[:no_format_executable]

  update_dir = File.join Gem.dir, 'gems', "rubygems-update-#{version}"

  Dir.chdir update_dir do
    say "Installing RubyGems #{version}"
    setup_cmd = "#{Gem.ruby} setup.rb #{args.join ' '}"

    # Make sure old rubygems isn't loaded
    old = ENV["RUBYOPT"]
    ENV.delete("RUBYOPT")
    system setup_cmd
    ENV["RUBYOPT"] = old if old
  end
end

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# File 'lib/rubygems/commands/update_command.rb', line 47

def execute
  hig = {}

  if options[:system] then
    # XXX MACRUBY We can't allow people to self-update RubyGems at this point.
    raise "This version of RubyGems cannot be self-updated."

    say "Updating RubyGems"

    unless options[:args].empty? then
      raise "No gem names are allowed with the --system option"
    end

    rubygems_update = Gem::Specification.new
    rubygems_update.name = 'rubygems-update'
    rubygems_update.version = Gem::Version.new Gem::VERSION
    hig['rubygems-update'] = rubygems_update

    options[:user_install] = false
  else
    say "Updating installed gems"

    hig = {} # highest installed gems

    Gem.source_index.each do |name, spec|
      if hig[spec.name].nil? or hig[spec.name].version < spec.version then
        hig[spec.name] = spec
      end
    end
  end

  gems_to_update = which_to_update hig, options[:args]

  updated = []

  installer = Gem::DependencyInstaller.new options

  gems_to_update.uniq.sort.each do |name|
    next if updated.any? { |spec| spec.name == name }
    success = false

    say "Updating #{name}"
    begin
      installer.install name
      success = true
    rescue Gem::InstallError => e
      alert_error "Error installing #{name}:\n\t#{e.message}"
      success = false
    end

    installer.installed_gems.each do |spec|
      updated << spec
      say "Successfully installed #{spec.full_name}" if success
    end
  end

  if gems_to_update.include? "rubygems-update" then
    Gem.source_index.refresh!

    update_gems = Gem.source_index.find_name 'rubygems-update'

    latest_update_gem = update_gems.sort_by { |s| s.version }.last

    say "Updating RubyGems to #{latest_update_gem.version}"
    installed = do_rubygems_update latest_update_gem.version

    say "RubyGems system software updated" if installed
  else
    if updated.empty? then
      say "Nothing to update"
    else
      say "Gems updated: #{updated.map { |spec| spec.name }.join ', '}"

      if options[:generate_ri] then
        updated.each do |gem|
          Gem::DocManager.new(gem, options[:rdoc_args]).generate_ri
        end

        Gem::DocManager.update_ri_cache
      end

      if options[:generate_rdoc] then
        updated.each do |gem|
          Gem::DocManager.new(gem, options[:rdoc_args]).generate_rdoc
        end
      end
    end
  end
end

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# File 'lib/rubygems/commands/update_command.rb', line 43

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

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# File 'lib/rubygems/commands/update_command.rb', line 161

def which_to_update(highest_installed_gems, gem_names)
  result = []

  highest_installed_gems.each do |l_name, l_spec|
    next if not gem_names.empty? and
            gem_names.all? { |name| /#{name}/ !~ l_spec.name }

    dependency = Gem::Dependency.new l_spec.name, "> #{l_spec.version}"

    begin
      fetcher = Gem::SpecFetcher.fetcher
      spec_tuples = fetcher.find_matching dependency
    rescue Gem::RemoteFetcher::FetchError => e
      raise unless fetcher.warn_legacy e do
        require 'rubygems/source_info_cache'

        dependency.name = '' if dependency.name == //

        specs = Gem::SourceInfoCache.search_with_source dependency

        spec_tuples = specs.map do |spec, source_uri|
          [[spec.name, spec.version, spec.original_platform], source_uri]
        end
      end
    end

    matching_gems = spec_tuples.select do |(name, _, platform),|
      name == l_name and Gem::Platform.match platform
    end

    highest_remote_gem = matching_gems.sort_by do |(_, version),|
      version
    end.last

    if highest_remote_gem and
       l_spec.version < highest_remote_gem.first[1] then
      result << l_name
    end
  end

  result
end