TSV and YML Converter

tsv_to_yml.rb

# Version 1.1 Basic structure. Added more.
require 'yaml'
require 'csv'

infile = ARGV[0]

yaml = File.read(infile)
data = YAML.safe_load(yaml)

key = data[0].keys
outfile = ARGV[1]
CSV.open(outfile, 'w', headers: false, col_sep: "\t") do |csv|
  csv << key
  data.each do |obj|
    csv << key.map { |i| obj[i.to_s] }
  end
end

yml_to_tsv.rb

# Version 1.1 Rubocop. 

require 'yaml'
require 'csv'

infile = ARGV[0]

data = []
CSV.foreach(infile, headers: true, col_sep: "\t").each do |row|
  hash = row.to_h
  data << hash
end

outfile = ARGV[1]

File.write(outfile, data.to_yaml)