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# IVLE - Informatics Virtual Learning Environment
# Copyright (C) 2007-2008 The University of Melbourne
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Module: TutorialService
# Author: Matt Giuca
# Date: 25/1/2008
# Provides the AJAX backend for the tutorial application.
# This allows several actions to be performed on the code the student has
# typed into one of the problem boxes.
# Calling syntax
# The "path" to this app is the path to a problem file (including the .xml
# extension), relative to the subjects base directory.
# The arguments determine what is to be done on this file.
# "code" - Full text of the student's code being submitted.
# "action". May be "test". (More to come).
# Returns a JSON response string indicating the results.
import cjson
def handle(req):
"""Handler for Ajax backend TutorialService app."""
# Set request attributes
req.write_html_head_foot = False # No HTML
# Get all the arguments, if POST.
# Ignore arguments if not POST, since we aren't allowed to cause
# side-effects on the server.
fields = req.get_fieldstorage()
act = fields.getfirst('action')
code = fields.getfirst('code')
if code == None or act == None:
req.throw_error(req.HTTP_BAD_REQUEST)
act = act.value
code = code.value
if act == "test":
handle_test(req, code, fields)
else:
req.throw_error(req.HTTP_BAD_REQUEST)
def handle_test(req, code, fields):
"""Handles a test action."""
# TEMP: Just echo the code back in JSON form
req.write(cjson.encode({"code": code}))
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