Rapinoe helps you parse Apple Keynote files.
Primarily it's designed to help you access the simple metadata of a Keynote file: return how many slides there are, extract the slide previews baked into the file, tell you various details about the file itself on disk, and so on.
First you'll need ImageMagick. If you use Homebrew, you'll be fine with a quick:
brew install imagemagickThen install the gem:
gem install rapinoerapinoe = Rapinoe.new('talks/Literal Best Player Ever.key')
# => <Rapinoe::Keynote: @name="Literal Best Player Ever", @path="talks/Literal Best Player Ever.key", @data=[…]>
rapinoe.write_preview_to_file("my_dope_talk.jpg")
# => Writes the higher quality 1024px-width preview of your entire deck to a file
rapinoe.slides
# => [<Rapinoe::Slide>, <Rapinoe::Slide>, <Rapinoe::Slide>, <Rapinoe::Slide>]
rapinoe.slides.first.write_preview_to_file("/tmp/slide-preview.jpg")
# => writes the Keynote-generated slide preview to a file
rapinoe.widescreen?
# => true
rapinoe.colors
# Returns the dominant colors in the first title slide by percentage order. Keys
# are in RGB format.
#
# => {[108, 190, 212]=>0.9550793650793651, [117, 124, 143]=>0.012619047619047618, [125, 83, 100]=>0.010158730158730159, [143, 23, 33]=>0.009603174603174603, [151, 10, 16]=>0.007301587301587302, [133, 49, 62]=>0.005238095238095238}