diff --git a/judge/scripts/lib/submission_helper.rb b/judge/scripts/lib/submission_helper.rb
new file mode 100644
--- /dev/null
+++ b/judge/scripts/lib/submission_helper.rb
@@ -0,0 +1,123 @@
+module Grader
+
+  class SubmissionRoomMaker
+    def initialize
+      @config = Grader::Configuration.get_instance
+    end
+    
+    def produce_grading_room(submission)
+      user = submission.user
+      problem = submission.problem
+      grading_room = "#{@config.user_result_dir}/" + 
+        "#{user.login}/#{problem.name}/#{submission.id}"
+      
+      FileUtils.mkdir_p(grading_room)
+      grading_room
+    end
+    
+    def find_problem_home(submission)
+      problem = submission.problem
+      "#{@config.problems_dir}/#{problem.name}"
+    end
+
+    def save_source(submission,source_name)
+      dir = self.produce_grading_room(submission)
+      f = File.open("#{dir}/#{source_name}","w")
+      f.write(submission.source)
+      f.close
+    end
+
+    def clean_up(submission)
+    end
+  end
+  
+  class SubmissionReporter
+    def initialize
+      @config = Grader::Configuration.get_instance
+    end
+    
+    def report(sub,test_result_dir)
+      save_result(sub,read_result(test_result_dir))
+    end
+    
+    def report_error(sub,msg)
+      save_result(sub,{:points => 0,
+                    :comment => "Grading error: #{msg}" })
+    end
+
+    protected
+    def read_result(test_result_dir)
+      cmp_msg_fname = "#{test_result_dir}/compiler_message"
+      if FileTest.exist?(cmp_msg_fname)
+        cmp_file = File.open(cmp_msg_fname)
+        cmp_msg = cmp_file.read
+        cmp_file.close
+      else
+        cmp_msg = ""
+      end
+      
+      result_fname = "#{test_result_dir}/result"
+      comment_fname = "#{test_result_dir}/comment"  
+      if FileTest.exist?(result_fname)
+        comment = ""
+        begin
+          result_file = File.open(result_fname)
+          result = result_file.readline.to_i
+          result_file.close
+        rescue
+          result = 0
+          comment = "error reading result file."
+        end
+          
+        begin
+          comment_file = File.open(comment_fname)
+          comment += comment_file.readline.chomp
+          comment_file.close
+        rescue
+          comment += ""
+        end
+
+        return {:points => result, 
+          :comment => comment, 
+          :cmp_msg => cmp_msg}
+      else
+        if FileTest.exist?("#{test_result_dir}/a.out")
+          return {:points => 0,
+            :comment => 'error during grading',
+            :cmp_msg => cmp_msg}
+        else
+          return {:points => 0,
+            :comment => 'compilation error',
+            :cmp_msg => cmp_msg}
+        end
+      end
+    end
+    
+    def save_result(submission,result)
+      problem = submission.problem
+      submission.graded_at = Time.now.gmtime
+      points = result[:points]
+      submission.points = points
+      comment = @config.report_comment(result[:comment])
+
+      #
+      # TODO: FIX THIS MESSAGE
+      #
+      if problem == nil
+        submission.grader_comment = 'PASSED: ' + comment + '(problem is nil)'
+      elsif points == problem.full_score
+        #submission.grader_comment = 'PASSED: ' + comment
+        submission.grader_comment = comment
+      elsif result[:comment].chomp =~ /^[\[\]P]+$/
+        submission.grader_comment = 'PASSED: ' + comment + '(inconsistent score)'
+      else
+        #submission.grader_comment = 'FAILED: ' + comment
+        submission.grader_comment = comment
+      end
+      submission.compiler_message = result[:cmp_msg] or ''
+      submission.save
+    end
+    
+  end
+  
+end