Some dirty CSV parsing I'll probably never need

gistfile1.txt

#!/usr/bin/env ruby

# This script translates Christy's Company's investors to all companies by investors.
# INPUT: arg0 as a path to a csv
# OUTPUT: arg1 as a path to a csv

require 'CSV'

investors = {}
CSV.foreach(ARGV[0], {headers: false}) do |row|
	company = row[0]
	row[1,row.length].each do |investor|
		investors[investor] ||= []
		investors[investor].push company unless investor.nil? or investor.empty?
	end
end

CSV.open(ARGV[1], "wb") do |csv|
	investors.each do |key, value|
		csv << ([key] + [value]).push(value.length)
	end
end