class Gem::PathSupport

Gem::PathSupport facilitates the GEM_HOME and GEM_PATH environment settings to the rest of RubyGems.

Attributes

home[R]

The default system path for managing Gems.

path[R]

Array of paths to search for Gems.

Public Class Methods

new(env=ENV) click to toggle source

Constructor. Takes a single argument which is to be treated like a hashtable, or defaults to ENV, the system environment.

# File lib/rubygems/path_support.rb, line 24
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 Instance Methods

home=(home) click to toggle source

Set the Gem home directory (as reported by Gem.dir).

# File lib/rubygems/path_support.rb, line 48
def home=(home)
 @home = home.to_s
end

path=(gpaths) click to toggle source

Set the Gem search path (as reported by Gem.path).

# File lib/rubygems/path_support.rb, line 55
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