class Bundler::CLI::Platform

def run
  platforms, ruby_version = Bundler.ui.silence do
    [ Bundler.definition.platforms.map {|p| "* #{p}" },
      Bundler.definition.ruby_version ]
  end
  output = []
  if options[:ruby]
    if ruby_version
      output << ruby_version
    else
      output << "No ruby version specified"
    end
  else
    output << "Your platform is: #{RUBY_PLATFORM}"
    output << "Your app has gems that work on these platforms:\n#{platforms.join("\n")}"
    if ruby_version
      output << "Your Gemfile specifies a Ruby version requirement:\n* #{ruby_version}"
      begin
        Bundler.definition.validate_ruby!
        output << "Your current platform satisfies the Ruby version requirement."
      rescue RubyVersionMismatch => e
        output << e.message
      end
    else
      output << "Your Gemfile does not specify a Ruby version requirement."
    end
  end
  Bundler.ui.info output.join("\n\n")
end