Module: Squared::Common::Prompt

Defined in:
lib/squared/common/prompt.rb

Class Method Summary collapse

Class Method Details

.choice(msg, list = nil, min: 1, max: 1, multiple: false, attempts: 5, timeout: 60) ⇒ Object 



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# File 'lib/squared/common/prompt.rb', line 35

def choice(msg, list = nil, min: 1, max: 1, multiple: false, attempts: 5, timeout: 60)
  require 'readline'
  require 'timeout'
  if list
    items = []
    list.each_with_index do |val, index|
      puts "#{index.succ.to_s.rjust(2)}. #{val}"
      items << val.chomp
    end
    max = items.size
    msg = "#{msg}: [1-#{max}#{multiple ? '|,' : ''}] "
  end
  return unless max >= min

  valid = ->(s) { s.match?(/^-?\d+$/) && s.to_i.between?(min, max) }
  Timeout.timeout(timeout) do
    begin
      while (ch = Readline.readline(msg, true))
        ch = ch.strip
        if multiple
          a = ch.split(/\s*,\s*/)
          b = a.select { |s| valid.call(s) }.map!(&:to_i)
          return items ? b.map! { |i| items[i - 1] } : b if a.size == b.size
        elsif valid.call(ch)
          return items ? items[ch.to_i - 1] : ch.to_i
        end
        attempts -= 1
        exit 1 unless attempts > 0
      end
    rescue Interrupt
      puts
      exit 0
    else
      multiple ? [] : nil
    end
  end
end

.confirm(msg, default = nil, agree: 'Y', cancel: 'N', attempts: 5, timeout: 15) ⇒ Object 



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# File 'lib/squared/common/prompt.rb', line 8

def confirm(msg, default = nil, agree: 'Y', cancel: 'N', attempts: 5, timeout: 15)
  require 'readline'
  require 'timeout'
  agree = /^#{agree}$/i if agree.is_a?(::String)
  cancel = /^#{cancel}$/i if cancel.is_a?(::String)
  Timeout.timeout(timeout) do
    begin
      while (ch = Readline.readline(msg, true))
        ch = ch.chomp
        case (ch.empty? ? default : ch)
        when agree
          return true
        when cancel
          return false
        end
        attempts -= 1
        exit 1 unless attempts > 0
      end
    rescue Interrupt
      puts
      exit 0
    else
      false
    end
  end
end