class Gem::Commands::SourcesCommand

def initialize
  require 'fileutils'
  super 'sources',
        'Manage the sources and cache file RubyGems uses to search for gems'
  add_option '-a', '--add SOURCE_URI', 'Add source' do |value, options|
    options[:add] = value
  end
  add_option '-l', '--list', 'List sources' do |value, options|
    options[:list] = value
  end
  add_option '-r', '--remove SOURCE_URI', 'Remove source' do |value, options|
    options[:remove] = value
  end
  add_option '-c', '--clear-all',
             'Remove all sources (clear the cache)' do |value, options|
    options[:clear_all] = value
  end
  add_option '-u', '--update', 'Update source cache' do |value, options|
    options[:update] = value
  end
  add_proxy_option
end