Contents

module ActiveScripts
  class OperatingSystem

    # INFO: ActiveScripts::OperatingSystem contains code that is
    #   for retrieving and validating operating systems.

    OPERATING_SYSTEMS = Dir.entries("#{File.dirname(__FILE__)}/preparations")
                           .drop(2)
                           .reject { |f| ["base.rb"].include?(f) }
                           .map { |f| File.basename(f, ".rb").to_sym }

    attr_accessor :operating_system

    def initialize
      @operating_system = :unknown
    end

    def self.find
      new.find
    end

    def find
      generate_operating_system!
      assert_valid_operating_system!
      return(@operating_system)
    end

    private

    def assert_valid_operating_system!
      unless OPERATING_SYSTEMS.include?(@operating_system)
        raise ArgumentError,
          "Unknown operating system: #{@operating_system.inspect}. Valid operating systems are: #{OPERATING_SYSTEMS.map(&:inspect).join(', ')}"
      end
    end

    def generate_operating_system!
      host_os = RbConfig::CONFIG['host_os']

      @operating_system = case host_os
      when /freebsd/
        :freebsd
      when /linux/
        :linux
      when /darwin|mac os|mac os x/
        :macosx
      when /solaris|bsd/
        :unix
      when /mswin|msys|mingw|cygwin|bccwin|wince|emc/
        :windows
      else
        ask("== Which operating system? ", lambda { |str| str.strip.downcase.to_sym })
      end
    end

  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
active_scripts-0.1.0	lib/active_scripts/operating_system.rb