gistfile1.rb

def substitute_command_tokens(check)
  unmatched_tokens = Array.new
  substituted = check[:command].split(':::').each_with_index do |match, index|
    next if index % 2 == 1
    token, default = $1.to_s.split('|', -1)
    matched = token.split('.').inject(@settings[:client]) do |client, attribute|
      if client[attribute].nil?
        default.nil? ? break : default
      else
        client[attribute]
      end
    end
    if matched.nil?
      unmatched_tokens << token
    end
    matched
  end
  [substituted, unmatched_tokens]
end