Load a config.yml file to setup global variables

platform_config.rb

require 'fileutils'
require 'yaml'
require 'erb'
module PlatformConfig
  def load(config_yml)
    unless File.exists?(config_yml)
      FileUtils.cp("#{config_yml}.example", config_yml)
    end

    if platform_config = YAML.load(ERB.new(File.read(config_yml)).result)[RUBY_PLATFORM]
      puts "Load test config for #{RUBY_PLATFORM} platform from #{config_yml}"
      platform_config.each do |name, value|
        eval("$#{name} = #{value.inspect}")
      end
    else
      raise "No platform #{RUBY_PLATFORM} config found in #{config_yml}"
    end
  end
  module_function :load
end