# File lib/chef/knife/cookbook_show.rb, line 44
      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, cookbook_version, segment, filename = @name_args[0..3]

          manifest = rest.get_rest("cookbooks/#{cookbook_name}/#{cookbook_version}")
          cookbook = Chef::CookbookVersion.new(cookbook_name)
          cookbook.manifest = manifest
          
          manifest_entry = cookbook.preferred_manifest_record(node, segment, filename)
          result = rest.get_rest("cookbooks/#{cookbook_name}/#{cookbook_version}/files/#{manifest_entry[:checksum]}")
          
          pretty_print(result)
        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 
          output(rest.get_rest("cookbooks/#{@name_args[0]}"))
        when 0
          show_usage
          Chef::Log.fatal("You must specify a cookbook name")
          exit 1
        end
      end