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, index: false, grep: nil, border: nil, auto: true, force: true, attempts: 3, timeout: 0) ⇒ Object 



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# File 'lib/squared/common/prompt.rb', line 56

def choice(msg, list = nil, min: 1, max: 1, multiple: false, index: false, grep: nil, border: nil, auto: true,
           force: true, attempts: 3, timeout: 0)
  require 'timeout'
  if list
    grep &&= Array(grep).map { |val| Regexp.new(val) }
    items = list.each_with_object([]) do |val, out|
      next if grep&.none? { |pat| pat.match?(line) }

      out << val.to_s.chomp
      puts '%2d. %s' % [out.size, val]
    end
    max = items.size
    raise ArgumentError, 'empty selection list' if max == 0

    min = grep ? 1 : [min, max].min
    if auto
      auto.times { puts } if auto.is_a?(::Numeric)
      if border == true
        puts print_footer
      elsif border
        puts print_footer(border: border)
      end
      msg = "#{msg + (force ? ':' : '?')} [#{min}-#{max}#{if (n = multiple)
                                                            "|,#{n.is_a?(::Numeric) ? "{#{n}}" : '*'}"
                                                          end}] "
    end
  end
  between = ->(s) { s.match?(/^\d+$/) && s.to_i.between?(min, max) }
  Timeout.timeout(timeout) do
    while (ch = Readline.readline(msg))
      ch.strip!
      unless ch.empty?
        if multiple
          k = if ch == '*'
                (min..max).to_a
              else
                ch.split(',').flat_map do |s|
                  s.strip!
                  if s =~ /^(\d+)-(\d+)$/
                    next unless between.call($1) && between.call($2)

                    i = $1.to_i
                    j = $2.to_i
                    next (i..j).to_a if i < j
                  elsif between.call(s)
                    s.to_i
                  end
                end
              end
          unless k.include?(nil)
            k.uniq!
            k.sort!
            unless multiple.is_a?(::Numeric) && multiple != k.size
              return index || !items ? k : k.map { |i| items[i.pred] }
            end
          end
        elsif between.call(ch)
          return index || !items ? ch.to_i : items[ch.to_i.pred]
        end
      end
      attempts -= 1
      next if attempts > 0

      exit 1 if force
      break
    end
  rescue Interrupt
    puts
    exit 0
  else
    [] if multiple
  end
end

.confirm(msg, default = nil, agree: 'Y', cancel: 'N', force: false, attempts: 3, timeout: 60) ⇒ Object 



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# File 'lib/squared/common/prompt.rb', line 22

def confirm(msg, default = nil, agree: 'Y', cancel: 'N', force: false, attempts: 3, timeout: 60)
  require 'timeout'
  if agree == 'Y' && cancel == 'N' && !msg.match?(%r{\[(?:Yn|nY|Y/n|y/N)\]})
    case default
    when 'Y'
      msg = "#{msg} [Y/n] "
    when 'N'
      msg = "#{msg} [y/N] "
    end
  end
  agree = /^#{Regexp.escape(agree)}$/i if agree.is_a?(::String)
  cancel = /^#{Regexp.escape(cancel)}$/i if cancel.is_a?(::String)
  Timeout.timeout(timeout) do
    while (ch = Readline.readline(msg))
      ch = ch.chomp
      case (ch.empty? ? default : ch)
      when agree
        return true
      when cancel
        exit 1 if force
        return false
      end
      attempts -= 1
      exit 1 unless attempts > 0
    end
  end
rescue Interrupt
  puts
  exit 0
else
  exit 1 if force
  false
end

.readline(msg, history = false, force: nil, multiline: nil, &blk) ⇒ Object 



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# File 'lib/squared/common/prompt.rb', line 130

def readline(msg, history = false, force: nil, multiline: nil, &blk)
  multiline = nil unless Readline.respond_to?(:readmultiline)
  read = lambda do
    if !multiline
      Readline.readline(msg, history)
    elsif block_given?
      Readline.readmultiline(msg, history, &blk)
    else
      Readline.readmultiline(msg, history) do |line|
        next if line.strip.empty?

        Array(multiline).any? { |val| line.split.last.end_with?(val.to_s) }
      end
    end
  end
  case force
  when true, false
    msg = "#{msg}#{unless msg.match?(/[>:\]}$|]\z/)
                     '%s%s' % if multiline.is_a?(::Enumerable)
                                [' ', "{#{multiline.to_a.join('|')}}"]
                              else
                                [multiline || (force ? ':' : '?'), '']
                              end
                   end} "
    ret = (read.call || '').strip
    multiline.each { |val| break if ret.delete_suffix!(val.to_s) } if multiline.is_a?(::Enumerable)
    exit 1 if force && ret.empty?
    ret
  else
    read.call
  end
end