Contents

require_relative 'basic_wrapper'
require_relative 'layer'
require_relative 'wrap'

module LovelyRufus
  class HangoutWrapper < Layer
    def call(wrap)
      @wrap = wrap
      final = hangout_line ? rewrapped : wrap
      next_layer.call(final)
    end

    attr_reader :wrap
    private     :wrap

    private

    module HangoutFinder
      module_function

      def between?(line_a, line_b)
        last_space = line_a.chomp.rindex(/\p{space}/)
        last_space and last_space >= line_b.chomp.size
      end

      def reverse?(line_a, line_b)
        cut = line_a.chomp.rindex(/\p{space}/)
        a_after = line_a[0...cut] + "\n"
        b_after = line_a[(cut + 1)..-1] + line_b
        b_after.chomp.rindex(/\p{space}/) > a_after.size
      end
    end

    def hangout_line
      lines.each_cons(2).with_index do |(a, b), i|
        if HangoutFinder.between?(a, b)
          return a unless i == lines.size - 2 and HangoutFinder.reverse?(a, b)
        end
      end
    end

    def lines
      @lines ||= wrap.lines
    end

    def rewrapped
      hangout_line[-1] = NBSP
      HangoutWrapper.new.call(wrapped)
    end

    def wrapped
      unfolded = Wrap[lines.join, width: wrap.width]
      BasicWrapper.new.call(unfolded)
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
lovely_rufus-0.2.1	lib/lovely_rufus/hangout_wrapper.rb