1 files changed, 28 insertions, 0 deletions
diff --git a/lib/rubygems/source_specific_file.rb b/lib/rubygems/source_specific_file.rb
new file mode 100644
index 0000000000..d296e617cc
--- /dev/null
+++ b/lib/rubygems/source_specific_file.rb
@@ -0,0 +1,28 @@
+class Gem::Source::SpecificFile < Gem::Source
+  def initialize(file)
+    @uri = nil
+    @path = ::File.expand_path(file)
+
+    @package = Gem::Package.new @path
+    @spec = @package.spec
+    @name = @spec.name_tuple
+  end
+
+  attr_reader :spec
+
+  def load_specs(*a)
+    [@name]
+  end
+
+  def fetch_spec(name)
+    return @spec if name == @name
+    raise Gem::Exception, "Unable to find '#{name}'"
+    @spec
+  end
+
+  def download(spec, dir=nil)
+    return @path if spec == @spec
+    raise Gem::Exception, "Unable to download '#{spec.full_name}'"
+  end
+
+end