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# frozen_string_literal: true #-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require_relative "command" require_relative "user_interaction" require_relative "text" ## # The command manager registers and installs all the individual sub-commands # supported by the gem command. # # Extra commands can be provided by writing a rubygems_plugin.rb # file in an installed gem. You should register your command against the # Gem::CommandManager instance, like this: # # # file rubygems_plugin.rb # require 'rubygems/command_manager' # # Gem::CommandManager.instance.register_command :edit # # You should put the implementation of your command in rubygems/commands. # # # file rubygems/commands/edit_command.rb # class Gem::Commands::EditCommand < Gem::Command # # ... # end # # See Gem::Command for instructions on writing gem commands. class Gem::CommandManager include Gem::Text include Gem::UserInteraction BUILTIN_COMMANDS = [ # :nodoc: :build, :cert, :check, :cleanup, :contents, :dependency, :environment, :exec, :fetch, :generate_index, :help, :info, :install, :list, :lock, :mirror, :open, :outdated, :owner, :pristine, :push, :query, :rdoc, :search, :server, :signin, :signout, :sources, :specification, :stale, :uninstall, :unpack, :update, :which, :yank, ].freeze ALIAS_COMMANDS = { "i" => "install", "login" => "signin", "logout" => "signout", }.freeze ## # Return the authoritative instance of the command manager. def self.instance @instance ||= new end ## # Returns self. Allows a CommandManager instance to stand # in for the class itself. def instance self end ## # Reset the authoritative instance of the command manager. def self.reset @instance = nil end ## # Register all the subcommands supported by the gem command. def initialize require "timeout" @commands = {} BUILTIN_COMMANDS.each do |name| register_command name end end ## # Register the Symbol +command+ as a gem command. def register_command(command, obj=false) @commands[command] = obj end ## # Unregister the Symbol +command+ as a gem command. def unregister_command(command) @commands.delete command end ## # Returns a Command instance for +command_name+ def [](command_name) command_name = command_name.intern return nil if @commands[command_name].nil? @commands[command_name] ||= load_and_instantiate(command_name) end ## # Return a sorted list of all command names as strings. def command_names @commands.keys.collect {|key| key.to_s }.sort end ## # Run the command specified by +args+. def run(args, build_args=nil) process_args(args, build_args) rescue StandardError, Timeout::Error => ex if ex.respond_to?(:detailed_message) msg = ex.detailed_message(highlight: false).sub(/\A(.*?)(?: \(.+?\))/) { $1 } else msg = ex.message end alert_error clean_text("While executing gem ... (#{ex.class})\n #{msg}") ui.backtrace ex terminate_interaction(1) rescue Interrupt alert_error clean_text("Interrupted") terminate_interaction(1) end def process_args(args, build_args=nil) if args.empty? say Gem::Command::HELP terminate_interaction 1 end case args.first when "-h", "--help" then say Gem::Command::HELP terminate_interaction 0 when "-v", "--version" then say Gem::VERSION terminate_interaction 0 when "-C" then args.shift start_point = args.shift if Dir.exist?(start_point) Dir.chdir(start_point) { invoke_command(args, build_args) } else alert_error clean_text("#{start_point} isn't a directory.") terminate_interaction 1 end when /^-/ then alert_error clean_text("Invalid option: #{args.first}. See 'gem --help'.") terminate_interaction 1 else invoke_command(args, build_args) end end def find_command(cmd_name) cmd_name = find_alias_command cmd_name possibilities = find_command_possibilities cmd_name if possibilities.size > 1 raise Gem::CommandLineError, "Ambiguous command #{cmd_name} matches [#{possibilities.join(', ')}]" elsif possibilities.empty? raise Gem::UnknownCommandError.new(cmd_name) end self[possibilities.first] end def find_alias_command(cmd_name) alias_name = ALIAS_COMMANDS[cmd_name] alias_name ? alias_name : cmd_name end def find_command_possibilities(cmd_name) len = cmd_name.length found = command_names.select {|name| cmd_name == name[0, len] } exact = found.find {|name| name == cmd_name } exact ? [exact] : found end private def load_and_instantiate(command_name) command_name = command_name.to_s const_name = command_name.capitalize.gsub(/_(.)/) { $1.upcase } << "Command" load_error = nil begin begin require "rubygems/commands/#{command_name}_command" rescue LoadError => e load_error = e end Gem::Commands.const_get(const_name).new rescue Exception => e e = load_error if load_error alert_error clean_text("Loading command: #{command_name} (#{e.class})\n\t#{e}") ui.backtrace e end end def invoke_command(args, build_args) cmd_name = args.shift.downcase cmd = find_command cmd_name cmd.deprecation_warning if cmd.deprecated? cmd.invoke_with_build_args args, build_args end end
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