new

# File lib/csv.rb, line 616
    def initialize(io, fs = ',', rs = nil)
      @io = io
      @fs = fs
      @rs = rs
      @dev = CSV::IOBuf.new(@io)
      @idx = 0
      if @dev[0] == 0xef and @dev[1] == 0xbb and @dev[2] == 0xbf
        @idx += 3
      end
      @close_on_terminate = false
    end