    # File lib/chef/knife/cookbook_show.rb, line 53
          def run
            case @name_args.length
            when 4 # We are showing a specific file
              node = Hash.new
              node[:fqdn] = config[:fqdn] if config.has_key?(:fqdn)
              node[:platform] = config[:platform] if config.has_key?(:platform)
              node[:platform_version] = config[:platform_version] if config.has_key?(:platform_version)

              class << node
                def attribute?(name)
                  has_key?(name)
                end
              end

              cookbook_name, segment, filename = @name_args[0], @name_args[2], @name_args[3]
              cookbook_version = @name_args[1] == 'latest' ? '_latest' : @name_args[1]

              cookbook = rest.get_rest("cookbooks/#{cookbook_name}/#{cookbook_version}")
              manifest_entry = cookbook.preferred_manifest_record(node, segment, filename)
              temp_file = rest.get_rest(manifest_entry[:url], true)

              # the temp file is cleaned up elsewhere
              temp_file.open if temp_file.closed?
              pretty_print(temp_file.read)

            when 3 # We are showing a specific part of the cookbook
              cookbook_version = @name_args[1] == 'latest' ? '_latest' : @name_args[1]
              result = rest.get_rest("cookbooks/#{@name_args[0]}/#{cookbook_version}")
              output(result.manifest[@name_args[2]])
            when 2 # We are showing the whole cookbook data
              cookbook_version = @name_args[1] == 'latest' ? '_latest' : @name_args[1]
              output(rest.get_rest("cookbooks/#{@name_args[0]}/#{cookbook_version}"))
            when 1 # We are showing the cookbook versions (all of them)
              cookbook_name = @name_args[0]
              env           = config[:environment]
              api_endpoint  = env ? "environments/#{env}/cookbooks/#{cookbook_name}" : "cookbooks/#{cookbook_name}"
              output(format_cookbook_list_for_display(rest.get_rest(api_endpoint)))
            when 0
              show_usage
              ui.fatal("You must specify a cookbook name")
              exit 1
            end
          end