-

#!/usr/bin/ruby
require 'vcardigan'

vcards = ARGV.map {|file|
  File.foreach(file, "END:VCARD").map {|vcard_data| VCardigan.parse vcard_data }
}.flatten
numbers = vcards.map(&:tel)
                .compact
                .map {|tel| tel.first.value.gsub(/\D/, '') }
                .select {|number| number.match /^(7|380)\d{10,}/ }
File.write 'telephons.txt', numbers.join("\n")