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)
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Constructor. Takes a single argument which is to be treated like a hashtable, or defaults to ENV, the system environment.
# File rubygems/path_support.rb, line 26 def initialize(env) @home = normalize_home_dir(env["GEM_HOME"] || Gem.default_dir) @path = split_gem_path env["GEM_PATH"], @home @spec_cache_dir = env["GEM_SPEC_CACHE"] || Gem.default_spec_cache_dir end
Private Instance Methods
default_path()
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Return the default Gem
path
# File rubygems/path_support.rb, line 74 def default_path Gem.default_path + [@home] end
expand(path)
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# File rubygems/path_support.rb, line 78 def expand(path) if File.directory?(path) File.realpath(path) else path end end
normalize_home_dir(home)
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# File rubygems/path_support.rb, line 35 def normalize_home_dir(home) if File::ALT_SEPARATOR home = home.gsub(File::ALT_SEPARATOR, File::SEPARATOR) end expand(home) end
split_gem_path(gpaths, home)
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Split the Gem
search path (as reported by Gem.path
).
# File rubygems/path_support.rb, line 46 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 /#{Gem.path_separator}\z/.match?(gpaths) 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