## # # Gem::PathSupport facilitates the GEM_HOME and GEM_PATH environment settings # to the rest of RubyGems. # class Gem::PathSupport ## # The default system path for managing Gems. attr_reader :home ## # Array of paths to search for Gems. attr_reader :path ## # Directory with spec cache attr_reader :spec_cache_dir # :nodoc: ## # # Constructor. Takes a single argument which is to be treated like a # hashtable, or defaults to ENV, the system environment. # def initialize(env=ENV) @env = env # note 'env' vs 'ENV'... @home = env["GEM_HOME"] || ENV["GEM_HOME"] || Gem.default_dir if File::ALT_SEPARATOR then @home = @home.gsub(File::ALT_SEPARATOR, File::SEPARATOR) end self.path = env["GEM_PATH"] || ENV["GEM_PATH"] @spec_cache_dir = env["GEM_SPEC_CACHE"] || ENV["GEM_SPEC_CACHE"] || Gem.default_spec_cache_dir @spec_cache_dir = @spec_cache_dir.dup.untaint end private ## # Set the Gem home directory (as reported by Gem.dir). def home=(home) @home = home.to_s end ## # Set the Gem search path (as reported by Gem.path). def path=(gpaths) # FIX: it should be [home, *path], not [*path, home] gem_path = [] # FIX: I can't tell wtf this is doing. gpaths ||= (ENV['GEM_PATH'] || "").empty? ? nil : ENV["GEM_PATH"] if gpaths if gpaths.kind_of?(Array) gem_path = gpaths.dup else gem_path = gpaths.split(Gem.path_separator) end if File::ALT_SEPARATOR then gem_path.map! do |this_path| this_path.gsub File::ALT_SEPARATOR, File::SEPARATOR end end gem_path << @home else gem_path = Gem.default_path + [@home] if defined?(APPLE_GEM_HOME) gem_path << APPLE_GEM_HOME end end @path = gem_path.uniq end end