require 'rubygems/command' require 'rubygems/local_remote_options' require 'rubygems/spec_fetcher' require 'rubygems/version_option' class Gem::Commands::OutdatedCommand < Gem::Command include Gem::LocalRemoteOptions include Gem::VersionOption def initialize super 'outdated', 'Display all gems that need updates' add_local_remote_options add_platform_option end def execute Gem::Specification.outdated.sort.each do |name| local = Gem::Specification.find_all_by_name(name).max dep = Gem::Dependency.new local.name, ">= #{local.version}" remotes, _ = Gem::SpecFetcher.fetcher.spec_for_dependency dep next if remotes.empty? remotes.sort! { |a,b| a[0].version <=> b[0].version } highest = remotes.last.first say "#{local.name} (#{local.version} < #{highest.version})" end end end