casacore-data.rb

require 'formula'

class CasacoreData < Formula
  homepage 'http://code.google.com/p/casacore/'
  head 'ftp://ftp.atnf.csiro.au/pub/software/measures_data/measures_data.tar.bz2'

  option 'use-casapy', 'Use Mac CASA.App (aka casapy) data directory if found'

  def casapy_data; '/Applications/CASA.app/Contents/data'; end

  def install
    if (build.include? 'use-casapy') and (File.exists? casapy_data+'/ephemerides')
      mkdir_p "#{share}/casacore"
      ln_s "#{casapy_data}", "#{share}/casacore/data"
    else
      mkdir_p "#{share}/casacore/data"
      cp_r Dir['*'], "#{share}/casacore/data/"
    end
  end

  def caveats
    if File.symlink? "#{share}/casacore/data"
      "Linked to CASA data directory #{casapy_data}"
    else
      "Installed latest ATNF measures_data tarball"
    end
  end
end