1 files changed, 63 insertions, 0 deletions
diff --git a/ruby/gems/1.9.1/gems/hpricot-0.8.1/lib/hpricot/blankslate.rb b/ruby/gems/1.9.1/gems/hpricot-0.8.1/lib/hpricot/blankslate.rb
new file mode 100644
index 0000000..6cc20f4
--- /dev/null
+++ b/ruby/gems/1.9.1/gems/hpricot-0.8.1/lib/hpricot/blankslate.rb
@@ -0,0 +1,63 @@
+#!/usr/bin/env ruby
+#--
+# Copyright 2004 by Jim Weirich (jim@weirichhouse.org).
+# All rights reserved.
+
+# Permission is granted for use, copying, modification, distribution,
+# and distribution of modified versions of this work as long as the
+# above copyright notice is included.
+#++
+
+module Hpricot
+
+  # BlankSlate provides an abstract base class with no predefined
+  # methods (except for <tt>\_\_send__</tt> and <tt>\_\_id__</tt>).
+  # BlankSlate is useful as a base class when writing classes that
+  # depend upon <tt>method_missing</tt> (e.g. dynamic proxies).
+  class BlankSlate
+    class << self
+
+      # Hide the method named +name+ in the BlankSlate class.  Don't
+      # hide +instance_eval+ or any method beginning with "__".
+      def hide(name)
+	undef_method name if
+	  instance_methods.include?(name) and
+	  name !~ /^(__|instance_eval)/
+      end
+    end
+
+    instance_methods.each { |m| hide(m) }
+  end
+end
+
+# Since Ruby is very dynamic, methods added to the ancestors of
+# BlankSlate <em>after BlankSlate is defined</em> will show up in the
+# list of available BlankSlate methods.  We handle this by defining a
+# hook in the Object and Kernel classes that will hide any defined
+module Kernel
+  class << self
+    alias_method :hpricot_slate_method_added, :method_added
+
+    # Detect method additions to Kernel and remove them in the
+    # BlankSlate class.
+    def method_added(name)
+      hpricot_slate_method_added(name)
+      return if self != Kernel
+      Hpricot::BlankSlate.hide(name)
+    end
+  end
+end
+
+class Object
+  class << self
+    alias_method :hpricot_slate_method_added, :method_added
+
+    # Detect method additions to Object and remove them in the
+    # BlankSlate class.
+    def method_added(name)
+      hpricot_slate_method_added(name)
+      return if self != Object
+      Hpricot::BlankSlate.hide(name)
+    end
+  end
+end