to_json.rb

#!/usr/bin/env ruby

require 'csv'
require 'json'

def print_as_json(data)
  $/ = "\n"
  csv = CSV.new(data, :headers => true, liberal_parsing: true)
  puts csv.to_a.map {|row| row.to_hash }.to_json
  $/ = "---===---"
rescue
end

$/ = "---===---";

ARGF.each do |record|
  record.chomp!("\n---===---")
  record.delete_prefix!("\n")
  print_as_json(record)
end