Class: Gem::Commands::UpdateCommand

# File 'lib/rubygems/commands/update_command.rb', line 20

attr_reader :updated # :nodoc:

# File 'lib/rubygems/commands/update_command.rb', line 76

def check_latest_rubygems(version) # :nodoc:
  if Gem.rubygems_version == version
    say "Latest version already installed. Done."
    terminate_interaction
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 83

def check_oldest_rubygems(version) # :nodoc:
  if oldest_supported_version > version
    alert_error "rubygems #{version} is not supported on #{RUBY_VERSION}. The oldest version supported by this ruby is #{oldest_supported_version}"
    terminate_interaction 1
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 90

def check_update_arguments # :nodoc:
  unless options[:args].empty?
    alert_error "Gem names are not allowed with the --system option"
    terminate_interaction 1
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 58

def defaults_str # :nodoc:
  "--no-force --install-dir #{Gem.dir}\n" +
    install_update_defaults_str
end

# File 'lib/rubygems/commands/update_command.rb', line 63

def description # :nodoc:
  <<-EOF
The update command will update your gems to the latest version.

The update command does not remove the previous version. Use the cleanup
command to remove old versions.
  EOF
end

# File 'lib/rubygems/commands/update_command.rb', line 97

def execute
  if options[:system]
    update_rubygems
    return
  end

  gems_to_update = which_to_update(
    highest_installed_gems,
    options[:args].uniq
  )

  if options[:explain]
    say "Gems to update:"

    gems_to_update.each do |name_tuple|
      say "  #{name_tuple.full_name}"
    end

    return
  end

  say "Updating installed gems"

  updated = update_gems gems_to_update

  installed_names = highest_installed_gems.keys
  updated_names = updated.map(&:name)
  not_updated_names = options[:args].uniq - updated_names
  not_installed_names = not_updated_names - installed_names
  up_to_date_names = not_updated_names - not_installed_names

  if updated.empty?
    say "Nothing to update"
  else
    say "Gems updated: #{updated_names.join(" ")}"
  end
  say "Gems already up-to-date: #{up_to_date_names.join(" ")}" unless up_to_date_names.empty?
  say "Gems not currently installed: #{not_installed_names.join(" ")}" unless not_installed_names.empty?
end

# File 'lib/rubygems/commands/update_command.rb', line 137

def fetch_remote_gems(spec) # :nodoc:
  dependency = Gem::Dependency.new spec.name, "> #{spec.version}"
  dependency.prerelease = options[:prerelease]

  fetcher = Gem::SpecFetcher.fetcher

  spec_tuples, errors = fetcher.search_for_dependency dependency

  error = errors.find {|e| e.respond_to? :exception }

  raise error if error

  spec_tuples
end

# File 'lib/rubygems/commands/update_command.rb', line 152

def highest_installed_gems # :nodoc:
  hig = {} # highest installed gems

  # Get only gem specifications installed as --user-install
  Gem::Specification.dirs = Gem.user_dir if options[:user_install]

  Gem::Specification.each do |spec|
    if hig[spec.name].nil? || hig[spec.name].version < spec.version
      hig[spec.name] = spec
    end
  end

  hig
end

# File 'lib/rubygems/commands/update_command.rb', line 167

def highest_remote_name_tuple(spec) # :nodoc:
  spec_tuples = fetch_remote_gems spec

  highest_remote_gem = spec_tuples.max
  return unless highest_remote_gem

  highest_remote_gem.first
end

# File 'lib/rubygems/commands/update_command.rb', line 176

def install_rubygems(spec) # :nodoc:
  args = update_rubygems_arguments
  version = spec.version

  update_dir = File.join spec.base_dir, "gems", "rubygems-update-#{version}"

  Dir.chdir update_dir do
    say "Installing RubyGems #{version}" unless options[:silent]

    installed = preparing_gem_layout_for(version) do
      system Gem.ruby, "--disable-gems", "setup.rb", *args
    end

    unless options[:silent]
      say "RubyGems system software updated" if installed
    end
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 322

def oldest_supported_version
  @oldest_supported_version ||=
    Gem::Version.new("3.3.3")
end

# File 'lib/rubygems/commands/update_command.rb', line 195

def preparing_gem_layout_for(version)
  if Gem::Version.new(version) >= Gem::Version.new("3.2.a")
    yield
  else
    require "tmpdir"
    Dir.mktmpdir("gem_update") do |tmpdir|
      FileUtils.mv Gem.plugindir, tmpdir

      status = yield

      unless status
        FileUtils.mv File.join(tmpdir, "plugins"), Gem.plugindir
      end

      status
    end
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 214

def rubygems_target_version
  version = options[:system]
  update_latest = version == true

  unless update_latest
    version     = Gem::Version.new     version
    requirement = Gem::Requirement.new version

    return version, requirement
  end

  version     = Gem::Version.new     Gem::VERSION
  requirement = Gem::Requirement.new ">= #{Gem::VERSION}"

  rubygems_update         = Gem::Specification.new
  rubygems_update.name    = "rubygems-update"
  rubygems_update.version = version

  highest_remote_tup = highest_remote_name_tuple(rubygems_update)
  target = highest_remote_tup ? highest_remote_tup.version : version

  [target, requirement]
end

# File 'lib/rubygems/commands/update_command.rb', line 238

def update_gem(name, version = Gem::Requirement.default)
  return if @updated.any? {|spec| spec.name == name }

  update_options = options.dup
  update_options[:prerelease] = version.prerelease?

  @installer = Gem::DependencyInstaller.new update_options

  say "Updating #{name}" unless options[:system]
  begin
    @installer.install name, Gem::Requirement.new(version)
  rescue Gem::InstallError, Gem::DependencyError => e
    alert_error "Error installing #{name}:\n\t#{e.message}"
  end

  @installer.installed_gems.each do |spec|
    @updated << spec
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 258

def update_gems(gems_to_update)
  gems_to_update.uniq.sort.each do |name_tuple|
    update_gem name_tuple.name, name_tuple.version
  end

  @updated
end

# File 'lib/rubygems/commands/update_command.rb', line 269

def update_rubygems
  if Gem.disable_system_update_message
    alert_error Gem.disable_system_update_message
    terminate_interaction 1
  end

  check_update_arguments

  version, requirement = rubygems_target_version

  check_latest_rubygems version

  check_oldest_rubygems version

  installed_gems = Gem::Specification.find_all_by_name "rubygems-update", requirement
  installed_gems = update_gem("rubygems-update", requirement) if installed_gems.empty? || installed_gems.first.version != version
  return if installed_gems.empty?

  install_rubygems installed_gems.first
end

# File 'lib/rubygems/commands/update_command.rb', line 290

def update_rubygems_arguments # :nodoc:
  args = []
  args << "--silent" if options[:silent]
  args << "--prefix" << Gem.prefix if Gem.prefix
  args << "--no-document" unless options[:document].include?("rdoc") || options[:document].include?("ri")
  args << "--no-format-executable" if options[:no_format_executable]
  args << "--previous-version" << Gem::VERSION
  args
end

# File 'lib/rubygems/commands/update_command.rb', line 72

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

# File 'lib/rubygems/commands/update_command.rb', line 300

def which_to_update(highest_installed_gems, gem_names)
  result = []

  highest_installed_gems.each do |_l_name, l_spec|
    next if !gem_names.empty? &&
            gem_names.none? {|name| name == l_spec.name }

    highest_remote_tup = highest_remote_name_tuple l_spec
    next unless highest_remote_tup

    result << highest_remote_tup
  end

  result
end