def visit_matching_files(name, &action)
  if File.directory?(name)
     #puts "=> #{name}"
     d = Dir.new(name)
     d.each {|child_name| 
        if child_name != "." and child_name != ".." and child_name != ".svn"
           visit_matching_files(name+"/"+child_name, &action)
	end 
     }
  else
     action.call(name)
  end
end

def patch_file(name)
  if name =~ /(.*)\.patch/
     system("patch #$1 #{name}")
  end
end

def patch_tree(name)
   visit_matching_files(name) {|name| patch_file(name)}
end


patch_tree(".")