require 'readline' module LeapCli; module Commands extend LeapCli::LogCommand extend LeapCli::Util def path(name) Path.named_path(name) end # # keeps prompting the user for a numbered choice, until they pick a good one or bail out. # # block is yielded and is responsible for rendering the choices. # def numbered_choice_menu(msg, items, &block) while true say("\n" + msg + ':') items.each_with_index(&block) say("q. quit") index = ask("number 1-#{items.length}> ") if index.nil? || index.empty? next elsif index =~ /q/ bail! else i = index.to_i - 1 if i < 0 || i >= items.length bail! else return i end end end end def parse_node_list(nodes) if nodes.is_a? Config::Object Config::ObjectList.new(nodes) elsif nodes.is_a? Config::ObjectList nodes elsif nodes.is_a? String manager.filter!(nodes) else bail! "argument error" end end def say(statement) if ends_in_whitespace?(statement) $stdout.print(statement) $stdout.flush else $stdout.puts(statement) end end def ask(question, options={}) default = options[:default] if default if ends_in_whitespace?(question) question = question + "|" + default + "| " else question = question + "|" + default + "|" end end response = Readline.readline(question, true) # set to false if ever reading passwords. if response response = response.strip if response.empty? return default else return response end else return default end end def agree(question, options={}) while true response = ask(question, options) if response.nil? say('Please enter "yes" or "no".') elsif ["y","yes", "ye"].include?(response.downcase) return true elsif ["n", "no"].include?(response.downcase) return false else say('Please enter "yes" or "no".') end end end private # true if str ends in whitespace before a color escape code. def ends_in_whitespace?(str) /[ \t](\e\[\d+(;\d+)*m)?\Z/ =~ str end end; end