from ltsv to csv converter

ltsv2csv

#!/usr/bin/env ruby

require 'csv'

firstline = true
io = $stdout

while line = ARGF.gets
  data = line.chomp.split(/\t/).map{|item| item.split(/:/,2) }.to_h
  if firstline
    headers = data.keys
    io.puts headers.to_csv
    firstline = false
  end
  io.puts data.values_at(*headers).to_csv
end