class KPM::Account

def sniff_delimiter(file)
  return nil if File.size?(file).nil?
  first_line = File.open(file, &:readline)
  return nil if first_line.nil?
  sniff = {}
  DELIMITERS.each do |delimiter|
    sniff[delimiter] = first_line.count(delimiter)
  end
  sniff = sniff.sort { |a, b| b[1] <=> a[1] }
  !sniff.empty? ? sniff[0][0] : nil
end