class Bundler::CLI::Update

def run
  Bundler.ui.level = "error" if options[:quiet]
  sources = Array(options[:source])
  groups  = Array(options[:group]).map(&:to_sym)
  if gems.empty? && sources.empty? && groups.empty?
    # We're doing a full update
    Bundler.definition(true)
  else
    unless Bundler.default_lockfile.exist?
      raise GemfileLockNotFound, "This Bundle hasn't been installed yet. " \
        "Run `bundle install` to update and install the bundled gems."
    end
    # cycle through the requested gems, just to make sure they exist
    names = Bundler.locked_gems.specs.map{ |s| s.name }
    gems.each do |g|
      next if names.include?(g)
      require "bundler/cli/common"
      raise GemNotFound, Bundler::CLI::Common.gem_not_found_message(g, names)
    end
    if groups.any?
      specs = Bundler.definition.specs_for groups
      sources.concat(specs.map(&:name))
    end
    Bundler.definition(:gems => gems, :sources => sources)
  end
  Bundler::Fetcher.disable_endpoint = options["full-index"]
  opts = options.dup
  opts["update"] = true
  opts["local"] = options[:local]
  Bundler.settings[:jobs] = opts["jobs"] if opts["jobs"]
  # rubygems plugins sometimes hook into the gem install process
  Gem.load_env_plugins if Gem.respond_to?(:load_env_plugins)
  Bundler.definition.validate_ruby!
  Installer.install Bundler.root, Bundler.definition, opts
  Bundler.load.cache if Bundler.app_cache.exist?
  if Bundler.settings[:clean] && Bundler.settings[:path]
    require "bundler/cli/clean"
    Bundler::CLI::Clean.new(options).run
  end
  Bundler.ui.confirm "Bundle updated!"
  without_groups_messages
end