Extract and convert data from VCF Vcards to CSV in Ruby

vcf_to_csv.rb

#!/usr/bin/env ruby

#require 'pp'
require 'vpim/vcard'
require 'csv'

COLUMN_ORDER = %w[
  given_name
  landline
  mobile
  email
  address
]

cards = Vpim::Vcard.decode(File.open('vcard.vcf'))

class VcardExport
  def initialize(vcard)
    @card = vcard
  end

  def to_hash
    {
      name:    name,
      email:   email,
      address: address,
      phone:   phone,
    }
  end

  def to_array
    [
      name,     # given_name
      '',       # landline
      phone,    # mobile
      email,    # email
      address,  # address
    ]
  end

  def name
    if @card.name.fullname.empty?
      @card.org.first
    else
      @card.name.fullname
    end
  end

  def email = @card.email.to_s

  def address
    [
      @card.address.pobox,
      @card.address.street,
      @card.address.locality,
      @card.address.region,
      @card.address.postalcode,
    ].select{|a| not a.empty?}.join(', ')
  end

  def phone
    @card.telephone
  end
end

cards_with_full_name = []
cards_with_out_name = []

cards.each do |card|
  if card.name.fullname.empty?
    cards_with_out_name << VcardExport.new(card)
  else
    cards_with_full_name << VcardExport.new(card)
  end
end

#cards_with_full_name.each do |card|
#  puts card.to_hash
#end
#
#cards_with_out_name.each do |card|
#  puts card.to_hash
#end

all_cards = cards_with_full_name.concat(cards_with_out_name)

CSV.open("contacts.csv", "w") do |csv|
  csv << COLUMN_ORDER
  all_cards.each do |card|
    csv << card.to_array
  end
end

Very specific usage here, but I think would be a good starting point for anyone.