csv2xml.rb

#!/usr/bin/env ruby
# very simple csv to xml convert, targeted for ruby 2.0 + 
# depends on activesupport 4 gem which add #to_xml method to hash and array

require 'csv'

require "active_support/core_ext"

if ARGV.length < 1 || ARGV[0] == "-h"
  puts "usage : ruby csv2xml.rb myfile.csv > myfile.xml"
  exit
end

  
infile = ARGV[0]
csv = CSV.new(File.new(infile), :headers => true, :header_converters => :symbol, :converters => [:all])
row_hash = csv.to_a.map{|row| row.to_hash }
file_name_for_root_element= File.basename(infile, File.extname(infile))
puts row_hash.to_xml(:root => file_name_for_root_element)