welp.rb

URL = "http://dl.bintray.com/oneclick/rubyinstaller/"
RUBY_VERSIONS_AVAILABLE = open(URL).read.scan(/>(.+)<\/a>/) # TODO: make this better.
  .flatten
  .delete_if { |r| r =~ /(md5|64|sha256|exe|doc|defunct\/)/ }
  .map { |r| r[/>(.+)/].gsub(/>|ruby-/, "").gsub(/(-i386-(.+).7z)/, "") }
  .uniq
  .group_by { |x| x.split('-')[0] }
  .tap { |x| x.map { |key, value| x[key] = x[key].map { |y| y.split('-')[1] }.join('|') } }
  .map { |x, y| !y.empty? ? "#{x}[#{y}]" : x }