numbers2csv: Command to convert Numbers file to CSV

numbers2csv

#!/usr/bin/env ruby
# Usage: numbers2csv foo.numbers > foo.csv

require "open3"
require "tempfile"

def osascript(script, *args)
  out, err, status = Open3.capture3("osascript", "-l", "JavaScript", "-e", script, *args)
  unless status.success?
    raise ScriptError, err
  end

  [out, err, status]
end

SCRIPT = <<~JS
  function run(argv) {
    const app = Application("Numbers");
    const doc = app.open(argv[0]);
    app.export(doc, {to: Path(argv[1]), as: "CSV"});
    app.close(doc);
    return;
  }
JS

csv_file = Tempfile.new(["export", ".csv"])
csv_file.close

out, err, status = osascript(SCRIPT, File.expand_path(ARGV[0]), csv_file.path)
unless status.success?
  warn err
  exit status.exitstatus
end

$stdout.write File.read(csv_file.path)