#!/usr/bin/env ruby

require 'spreadsheet'

source, target = ARGV

if source.nil?
  puts "Usage: #{$0} <source> [<target>]"
  exit -1
end

target = target ? File.open(target, 'w') : STDOUT

reader = Spreadsheet::Excel::Reader.new :print_opcodes => target
reader.setup File.open(source)

while tuple = reader.get_next_chunk
end