Convert YML file to CSV

ymltocsv.rb

require 'yaml'
require 'csv'

yaml_file_path = ARGV[0] || nil
csv_file_path = ARGV[1] || nil

if yaml_file_path.nil? or csv_file_path.nil?
  puts "USAGE: ruby ymltocsv.rb <input_path> <output_path>"
  exit 1
end

parsed_yaml_file = YAML.load_file(yaml_file_path)

header = parsed_yaml_file.first.keys
puts "writing header"
CSV.open(csv_file_path, "wb") {|c| c << header}

puts "writing lines"
parsed_yaml_file.each do |line|
  CSV.open(csv_file_path, "a") {|c| c << line.values}
end

puts "its over"