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Class: Gem::PathSupport

Relationships & Source Files
Inherits: Object
Defined in: lib/rubygems/path_support.rb

Overview

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

Class Method Summary

Instance Attribute Summary

  • #home readonly

    The default system path for managing Gems.

  • #path readonly

    Array of paths to search for Gems.

Instance Method Summary

Constructor Details

.new(env) ⇒ PathSupport

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

[ GitHub ] 

  


# File 'lib/rubygems/path_support.rb', line 25



def initialize(env)
  @home     = env["GEM_HOME"] || Gem.default_dir

  if File::ALT_SEPARATOR then
    @home   = @home.gsub(File::ALT_SEPARATOR, File::SEPARATOR)
  end

  @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.untaint
end


  







Instance Attribute Details



  

    #home   (readonly)
  



  

    

The default system path for managing Gems.


  



  [ GitHub ]


  

  


# File 'lib/rubygems/path_support.rb', line 10



attr_reader :home


  








  

    #path   (readonly)
  



  

    

Array of paths to search for Gems.


  



  [ GitHub ]


  

  


# File 'lib/rubygems/path_support.rb', line 14



attr_reader :path


  







Instance Method Details



  

    #default_path   (private)
  



  

    

Return the default ::Gem path


  



  [ GitHub ]


  

  


# File 'lib/rubygems/path_support.rb', line 72



def default_path
  gem_path = Gem.default_path + [@home]

  if defined?(APPLE_GEM_HOME)
    gem_path << APPLE_GEM_HOME
  end
  gem_path
end


  








  

    #split_gem_path(gpaths, home)   (private)
  



  

    

Split the ::Gem search path (as reported by Gem.path).


  



  [ GitHub ]


  

  


# File 'lib/rubygems/path_support.rb', line 44



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 then
      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.uniq
end