Basic Ruby script for generating nanDECK cards (untested)

cards.rb

CARD_INFO = {
  animal: { color: '#aa0000', border: '#ff0000' },
  vegetable: { color: '#00aa00', border: '#00ff00' },
  mineral: { color: '#0000aa', border: '#0000ff' }
}.freeze

data = [
  { name: 'Cat', value: '1', type: :animal },
  { name: 'Rutabaga', value: '2', type: :vegetable },
  { name: 'Obsidian', value: '3', type: :mineral }
].freeze

output = [
  "UNIT=INCH",
  "CARDSIZE=2.5,3.5",
  "BORDER=NONE",
  "DPI=300",
  "PAGE = 8.5, 11, PORTRAIT",
  "MARGINS = 0.5, 0.5, 0.25, 0.25"
]

card_index = 1

data.each do |card_data|
  info = CARD_INFO[card_data[:type]]
  
  # borders are centered on paths, like inkscape. this will bleed a 0.125 border on the inside.
  output << "RECTANGLE = #{card_index}, 0, 0, 2.5, 3.5, #{info[:border]}, #{info[:color]}, 0.25"
  output << "FONT = Tahoma, 14, B, #000000"
  output << %{TEXT = #{card_index}, "#{card_data[:name]}", 0.5, 0.5, 1.5, 0.5, center}
  output << "FONT = Tahoma, 32, B, #000000"
  output << %{TEXT = #{card_index}, "#{card_data[:value]}", 0.5, 1.5, 1.5, 1.0, center}

  card_index += 1
end

File.open('output.txt', 'wb') { |fh| fh.print output.join("\n") }