Module: Doing::PromptYN
- Included in:
- Prompt
- Defined in:
- lib/doing/prompt/yn.rb
Overview
Request Yes/No answers on command line
Instance Method Summary collapse
-
#yn(question, default_response: false) ⇒ Boolean
Ask a yes or no question in the terminal.
Instance Method Details
#yn(question, default_response: false) ⇒ Boolean
Ask a yes or no question in the terminal
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 |
# File 'lib/doing/prompt/yn.rb', line 16 def yn(question, default_response: false) return @force_answer == :yes ? true : false unless @force_answer.nil? $stdin.reopen('/dev/tty') default = if default_response.is_a?(String) default_response =~ /y/i ? true : false else default_response end # if global --default is set, answer default return default if @default_answer # if this isn't an interactive shell, answer default return default unless $stdout.isatty # clear the buffer if ARGV&.length ARGV.length.times do ARGV.shift end end system 'stty cbreak' cw = white cbw = boldwhite cbg = boldgreen cd = Color.default = unless default.nil? "#{cw}[#{default ? "#{cbg}Y#{cw}/#{cbw}n" : "#{cbw}y#{cw}/#{cbg}N"}#{cw}]#{cd}" else "#{cw}[#{cbw}y#{cw}/#{cbw}n#{cw}]#{cd}" end $stdout.syswrite "#{cbw}#{question.sub(/\?$/, '')} #{}#{cbw}?#{cd} " res = $stdin.sysread 1 puts system 'stty cooked' res.chomp! res.downcase! return default if res.empty? res =~ /y/i ? true : false end |