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opt
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alt
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ruby19
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lib64
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ruby
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1.9.1
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rubygems
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files >> //opt/alt/ruby19/lib64/ruby/1.9.1/rubygems/command_manager.rb
#-- # Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. # All rights reserved. # See LICENSE.txt for permissions. #++ require 'rubygems/command' require 'rubygems/user_interaction' ## # 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' # # class Gem::Commands::EditCommand < Gem::Command # # ... # end # # Gem::CommandManager.instance.register_command :edit # # See Gem::Command for instructions on writing gem commands. class Gem::CommandManager include Gem::UserInteraction ## # Return the authoritative instance of the command manager. def self.instance @command_manager ||= new end ## # Reset the authoritative instance of the command manager. def self.reset @command_manager = nil end ## # Register all the subcommands supported by the gem command. def initialize require 'timeout' @commands = {} register_command :build register_command :cert register_command :check register_command :cleanup register_command :contents register_command :dependency register_command :environment register_command :fetch register_command :generate_index register_command :help register_command :install register_command :list register_command :lock register_command :outdated register_command :owner register_command :pristine register_command :push register_command :query register_command :rdoc register_command :search register_command :server register_command :sources register_command :specification register_command :stale register_command :uninstall register_command :unpack register_command :update register_command :which end ## # Register the Symbol +command+ as a gem command. def register_command(command) @commands[command] = false end ## # Unregister the Symbol +command+ as a gem command. def unregister_command(command) @commands.delete command end ## # Return the registered command from the 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 config specified by +args+. def run(args) process_args(args) rescue StandardError, Timeout::Error => ex alert_error "While executing gem ... (#{ex.class})\n #{ex.to_s}" ui.errs.puts "\t#{ex.backtrace.join "\n\t"}" if Gem.configuration.backtrace terminate_interaction(1) rescue Interrupt alert_error "Interrupted" terminate_interaction(1) end def process_args(args) args = args.to_str.split(/\s+/) if args.respond_to?(:to_str) if args.size == 0 say Gem::Command::HELP terminate_interaction(1) end case args[0] when '-h', '--help' say Gem::Command::HELP terminate_interaction(0) when '-v', '--version' say Gem::VERSION terminate_interaction(0) when /^-/ alert_error "Invalid option: #{args[0]}. See 'gem --help'." terminate_interaction(1) else cmd_name = args.shift.downcase cmd = find_command(cmd_name) cmd.invoke(*args) end end def find_command(cmd_name) possibilities = find_command_possibilities cmd_name if possibilities.size > 1 then raise "Ambiguous command #{cmd_name} matches [#{possibilities.join(', ')}]" elsif possibilities.size < 1 then raise "Unknown command #{cmd_name}" end self[possibilities.first] end def find_command_possibilities(cmd_name) len = cmd_name.length command_names.select { |n| cmd_name == n[0, len] } end private def load_and_instantiate(command_name) command_name = command_name.to_s const_name = command_name.capitalize.gsub(/_(.)/) { $1.upcase } << "Command" commands = Gem::Commands retried = false begin commands.const_get(const_name).new rescue NameError raise if retried retried = true begin require "rubygems/commands/#{command_name}_command" rescue Exception => e alert_error "Loading command: #{command_name} (#{e.class})\n #{e}" ui.errs.puts "\t#{e.backtrace.join "\n\t"}" if Gem.configuration.backtrace end retry end end end
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