Fixed rdoc --ri-site

RDoc::Options used the removed RDoc::RI::Paths::SITE_DIR which broke
this feature.  Now site_dir is used.

Author: drbrain

History.rdoc

@@ -14,6 +14,7 @@
     Pull request #184 by Carlos Agarie
   * RDoc::Servlet no longer ignores extra directories from -d.  Pull request
     #173 by Thomas Leitner
+  * Fixed `rdoc --ri-site`.  Bug #193 by Michal Papis.
 
 === 4.0.0 / 2013-02-24
 

lib/rdoc/options.rb

@@ -928,7 +928,7 @@ def parse argv
         check_generator
 
         @generator_name = "ri"
-        @op_dir = RDoc::RI::Paths::SITEDIR
+        @op_dir = RDoc::RI::Paths.site_dir
         setup_generator
       end
 

test/test_rdoc_options.rb

@@ -501,6 +501,13 @@ def test_parse_page_dir_root
     end
   end
 
+  def test_parse_ri_site
+    @options.parse %w[--ri-site]
+
+    assert_equal RDoc::Generator::RI,      @options.generator
+    assert_equal RDoc::RI::Paths.site_dir, @options.op_dir
+  end
+
   def test_parse_root
     assert_equal Pathname(Dir.pwd), @options.root