1 files changed, 46 insertions, 0 deletions
diff --git a/lib/rubygems/defaults.rb b/lib/rubygems/defaults.rb
new file mode 100644
index 0000000000..3a6229511b
--- /dev/null
+++ b/lib/rubygems/defaults.rb
@@ -0,0 +1,46 @@
+module Gem
+
+  # An Array of the default sources that come with RubyGems.
+  def self.default_sources
+    %w[http://gems.rubyforge.org]
+  end
+
+  # Default home directory path to be used if an alternate value is not
+  # specified in the environment.
+  def self.default_dir
+    if defined? RUBY_FRAMEWORK_VERSION then
+      File.join File.dirname(ConfigMap[:sitedir]), 'Gems',
+                ConfigMap[:ruby_version]
+    else
+      File.join ConfigMap[:libdir], 'ruby', 'gems', ConfigMap[:ruby_version]
+    end
+  end
+
+  # Default gem path.
+  def self.default_path
+    default_dir
+  end
+
+  # Deduce Ruby's --program-prefix and --program-suffix from its install name.
+  def self.default_exec_format
+    baseruby = ConfigMap[:BASERUBY] || 'ruby'
+    ConfigMap[:RUBY_INSTALL_NAME].sub(baseruby, '%s') rescue '%s'
+  end
+
+  # The default directory for binaries
+  def self.default_bindir
+    Config::CONFIG['bindir']
+  end
+
+  # The default system-wide source info cache directory.
+  def self.default_system_source_cache_dir
+    File.join Gem.dir, 'source_cache'
+  end
+
+  # The default user-specific source info cache directory.
+  def self.default_user_source_cache_dir
+    File.join Gem.user_home, '.gem', 'source_cache'
+  end
+
+end
+