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# frozen_string_literal: true require_relative "../command" require_relative "../dependency_list" require_relative "../uninstaller" class Gem::Commands::CleanupCommand < Gem::Command def initialize super "cleanup", "Clean up old versions of installed gems", :force => false, :install_dir => Gem.dir, :check_dev => true add_option("-n", "-d", "--dry-run", "Do not uninstall gems") do |value, options| options[:dryrun] = true end add_option(:Deprecated, "--dryrun", "Do not uninstall gems") do |value, options| options[:dryrun] = true end deprecate_option("--dryrun", extra_msg: "Use --dry-run instead") add_option("-D", "--[no-]check-development", "Check development dependencies while uninstalling", "(default: true)") do |value, options| options[:check_dev] = value end add_option("--[no-]user-install", "Cleanup in user's home directory instead", "of GEM_HOME.") do |value, options| options[:user_install] = value end @candidate_gems = nil @default_gems = [] @full = nil @gems_to_cleanup = nil @original_home = nil @original_path = nil @primary_gems = nil end def arguments # :nodoc: "GEMNAME name of gem to cleanup" end def defaults_str # :nodoc: "--no-dry-run" end def description # :nodoc: <<-EOF The cleanup command removes old versions of gems from GEM_HOME that are not required to meet a dependency. If a gem is installed elsewhere in GEM_PATH the cleanup command won't delete it. If no gems are named all gems in GEM_HOME are cleaned. EOF end def usage # :nodoc: "#{program_name} [GEMNAME ...]" end def execute say "Cleaning up installed gems..." if options[:args].empty? done = false last_set = nil until done do clean_gems this_set = @gems_to_cleanup.map {|spec| spec.full_name }.sort done = this_set.empty? || last_set == this_set last_set = this_set end else clean_gems end say "Clean up complete" verbose do skipped = @default_gems.map {|spec| spec.full_name } "Skipped default gems: #{skipped.join ', '}" end end def clean_gems @original_home = Gem.dir @original_path = Gem.path get_primary_gems get_candidate_gems get_gems_to_cleanup @full = Gem::DependencyList.from_specs deplist = Gem::DependencyList.new @gems_to_cleanup.each {|spec| deplist.add spec } deps = deplist.strongly_connected_components.flatten deps.reverse_each do |spec| uninstall_dep spec end Gem::Specification.reset end def get_candidate_gems @candidate_gems = unless options[:args].empty? options[:args].map do |gem_name| Gem::Specification.find_all_by_name gem_name end.flatten else Gem::Specification.to_a end end def get_gems_to_cleanup gems_to_cleanup = @candidate_gems.select do |spec| @primary_gems[spec.name].version != spec.version end default_gems, gems_to_cleanup = gems_to_cleanup.partition do |spec| spec.default_gem? end uninstall_from = options[:user_install] ? Gem.user_dir : @original_home gems_to_cleanup = gems_to_cleanup.select do |spec| spec.base_dir == uninstall_from end @default_gems += default_gems @default_gems.uniq! @gems_to_cleanup = gems_to_cleanup.uniq end def get_primary_gems @primary_gems = {} Gem::Specification.each do |spec| if @primary_gems[spec.name].nil? || @primary_gems[spec.name].version < spec.version @primary_gems[spec.name] = spec end end end def uninstall_dep(spec) return unless @full.ok_to_remove?(spec.full_name, options[:check_dev]) if options[:dryrun] say "Dry Run Mode: Would uninstall #{spec.full_name}" return end say "Attempting to uninstall #{spec.full_name}" uninstall_options = { :executables => false, :version => "= #{spec.version}", } uninstall_options[:user_install] = Gem.user_dir == spec.base_dir uninstaller = Gem::Uninstaller.new spec.name, uninstall_options begin uninstaller.uninstall rescue Gem::DependencyRemovalException, Gem::InstallError, Gem::GemNotInHomeException, Gem::FilePermissionError => e say "Unable to uninstall #{spec.full_name}:" say "\t#{e.class}: #{e.message}" end ensure # Restore path Gem::Uninstaller may have changed Gem.use_paths @original_home, *@original_path end end
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