Convert CSV to JSON with simple command line script

CSVtoJSON.rb

#!/usr/bin/env ruby

require 'json'

file = File.new(ARGV[0], "r")

#get format
puts "Getting format"

format = file.gets
data_points = format.split(',')
puts "Data Point Labels #{data_points}"

#read data
puts "Reading data"
while(line = file.gets)
	data = line.split(',')
	index = 0
	data_doc = {}
	data_points.each do |label|
		data_doc[label.strip] = data[index].strip
		index = index + 1
	end
	puts "Document: #{data_doc.to_json}"
end