Class: Gem::Commands::UpdateCommand

# File 'lib/rubygems/commands/update_command.rb', line 19

attr_reader :updated # :nodoc:

# File 'lib/rubygems/commands/update_command.rb', line 70

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 77

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 84

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 53

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

# File 'lib/rubygems/commands/update_command.rb', line 57

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 91

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

  updated_names = updated.map {|spec| spec.name }
  not_updated_names = options[:args].uniq - updated_names

  if updated.empty?
    say "Nothing to update"
  else
    say "Gems updated: #{updated_names.join(' ')}"
    say "Gems already up-to-date: #{not_updated_names.join(' ')}" unless not_updated_names.empty?
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 127

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 142

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? or hig[spec.name].version < spec.version
      hig[spec.name] = spec
    end
  end

  hig
end

# File 'lib/rubygems/commands/update_command.rb', line 157

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

  matching_gems = spec_tuples.select do |g,_|
    g.name == spec.name and g.match_platform?
  end

  highest_remote_gem = matching_gems.max

  highest_remote_gem ||= [Gem::NameTuple.null]

  highest_remote_gem.first
end

# File 'lib/rubygems/commands/update_command.rb', line 171

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

  update_dir = File.join Gem.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

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

# File 'lib/rubygems/commands/update_command.rb', line 331

def oldest_supported_version
  @oldest_supported_version ||=
    if Gem.ruby_version > Gem::Version.new("3.0.a")
      Gem::Version.new("3.2.3")
    elsif Gem.ruby_version > Gem::Version.new("2.7.a")
      Gem::Version.new("3.1.2")
    elsif Gem.ruby_version > Gem::Version.new("2.6.a")
      Gem::Version.new("3.0.1")
    elsif Gem.ruby_version > Gem::Version.new("2.5.a")
      Gem::Version.new("2.7.3")
    elsif Gem.ruby_version > Gem::Version.new("2.4.a")
      Gem::Version.new("2.6.8")
    else
      Gem::Version.new("2.5.2")
    end
end

# File 'lib/rubygems/commands/update_command.rb', line 187

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

    status = yield

    if status
      FileUtils.rm_rf tmpdir
    else
      FileUtils.mv File.join(tmpdir, "plugins"), Gem.plugindir
    end

    status
  end
end

# File 'lib/rubygems/commands/update_command.rb', line 207

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

  if update_latest
    version     = Gem::Version.new     Gem::VERSION
    requirement = Gem::Requirement.new ">= #{Gem::VERSION}"
  else
    version     = Gem::Version.new     version
    requirement = Gem::Requirement.new version
  end

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

  hig = {
    'rubygems-update' => rubygems_update,
  }

  gems_to_update = which_to_update hig, options[:args], :system
  up_ver = gems_to_update.first.version

  target = if update_latest
             up_ver
           else
             version
           end

  return target, requirement
end

# File 'lib/rubygems/commands/update_command.rb', line 239

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] && options[:silent]
  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 259

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 270

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

  update_gem 'rubygems-update', version

  installed_gems = Gem::Specification.find_all_by_name 'rubygems-update', requirement
  version        = installed_gems.first.version

  install_rubygems version
end

# File 'lib/rubygems/commands/update_command.rb', line 292

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 if
    options[:system] == true or
      Gem::Version.new(options[:system]) >= Gem::Version.new(2)
  args
end

# File 'lib/rubygems/commands/update_command.rb', line 66

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

# File 'lib/rubygems/commands/update_command.rb', line 304

def which_to_update(highest_installed_gems, gem_names, system = false)
  result = []

  highest_installed_gems.each do |l_name, l_spec|
    next if not gem_names.empty? and
            gem_names.none? {|name| name == l_spec.name }

    highest_remote_tup = highest_remote_name_tuple l_spec
    highest_remote_ver = highest_remote_tup.version
    highest_installed_ver = l_spec.version

    if system or (highest_installed_ver < highest_remote_ver)
      result << Gem::NameTuple.new(l_spec.name, [highest_installed_ver, highest_remote_ver].max, highest_remote_tup.platform)
    end
  end

  result
end