# frozen_string_literal: true ## # # 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) @home = env["GEM_HOME"] || Gem.default_dir if File::ALT_SEPARATOR @home = @home.gsub(File::ALT_SEPARATOR, File::SEPARATOR) end @home = expand(@home) @path = split_gem_path env["GEM_PATH"], @home @spec_cache_dir = env["GEM_SPEC_CACHE"] || Gem.default_spec_cache_dir @spec_cache_dir = @spec_cache_dir.dup.tap(&Gem::UNTAINT) end private ## # Split the Gem search path (as reported by Gem.path). def split_gem_path(gpaths, home) # FIX: it should be [home, *path], not [*path, home] gem_path = [] if gpaths gem_path = gpaths.split(Gem.path_separator) # Handle the path_separator being set to a regexp, which will cause # end_with? to error if gpaths =~ /#{Gem.path_separator}\z/ gem_path += default_path end if File::ALT_SEPARATOR gem_path.map! do |this_path| this_path.gsub File::ALT_SEPARATOR, File::SEPARATOR end end gem_path << home else gem_path = default_path end gem_path.map {|path| expand(path) }.uniq end # Return the default Gem path def default_path gem_path = Gem.default_path + [@home] if defined?(APPLE_GEM_HOME) gem_path << APPLE_GEM_HOME end gem_path end def expand(path) if File.directory?(path) File.realpath(path) else path end end end