class Comp
  def initialize ext
    @file_ext = ext
  end
  def compare n
    len = Dir::glob(self.file_ext).length
    if n+1 == len || len == 0
      return 0
    end
    src = open(Dir::glob(self.file_ext)[n])
    Dir::glob(self.file_ext)[n+1..len].each do |f|
      begin
        src2 = open(f)
      if src.stat.size == src2.stat.size
        begin
        if src.read == src2.read
          File::delete(f)
          if n == 0
            self.compare 0
          else
            self.compare n - 1
          end
        end
        rescue
        end
      end
      rescue
      end
    end
    self.compare n + 1
  end

  attr_reader :file_ext
end
class RecurseDir
  def initialize(path)
    @dir = Array::new #後でたどるディレクトリ
    Dir::foreach(path) do |s|
      if File::ftype(s) == "directory"
        if s != ".."
          self.dir << File::expand_path(s)
        end
      end
    end
  end
  def recurse_compare
    self.dir.each do |f|
      p f + "/*"
      a = Comp::new f + "/*"
      a.compare 0
    end
  end
  attr_reader :dir
end
a = RecurseDir.new "./"
a.recurse_compare