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#!/usr/bin/env python
# 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
# Program: Marks
# Author: Matt Giuca
# Date: 17/4/2008
# Script to calculate the marks for all students for a particular subject.
# Requires root to run.
import sys
import os
import re
import csv
from xml.dom import minidom
import ivle.database
import ivle.worksheet
import ivle.conf
if os.getuid() != 0:
print >>sys.stderr, "Must run %s as root." % os.path.basename(sys.argv[0])
sys.exit()
if len(sys.argv) <= 1:
print >>sys.stderr, "Usage: %s subject" % os.path.basename(sys.argv[0])
sys.exit()
# Regex for valid identifiers (subject/worksheet names)
re_ident = re.compile("[0-9A-Za-z_]+")
# This code copy/edited from www/apps/tutorial/__init__.py
def is_valid_subjname(subject):
m = re_ident.match(subject)
return m is not None and m.end() == len(subject)
subject = sys.argv[1]
# Subject names must be valid identifiers
if not is_valid_subjname(subject):
print >>sys.stderr, "Invalid subject name: %s." % repr(subject)
sys.exit()
def get_userdata(user):
"""
Given a User object, returns a list of strings for the user data which
will be part of the output for this user.
(This is not marks, it's other user data).
"""
last_login = (None if user.last_login is None else
user.last_login.strftime("%d/%m/%y"))
return [user.studentid, user.login, user.fullname, last_login]
userdata_header = ["Student ID", "Login", "Full name", "Last login"]
def get_assessable_worksheets(subject):
"""
Given a subject name, returns a list of strings - the worksheet names (not
primary key IDs) for all assessable worksheets for that subject.
May raise Exceptions, which are fatal.
"""
# NOTE: This code is copy/edited from
# www/apps/tutorial/__init__.py:handle_subject_menu
# Should be factored out of there.
# Parse the subject description file
# The subject directory must have a file "subject.xml" in it,
# or it does not exist (raise exception).
try:
subjectfile = open(os.path.join(ivle.conf.subjects_base, subject,
"subject.xml"))
except:
raise Exception("Subject %s not found." % repr(subject))
assessable_worksheets = []
# Read in data about the subject
subjectdom = minidom.parse(subjectfile)
subjectfile.close()
# TEMP: All of this is for a temporary XML format, which will later
# change.
worksheetsdom = subjectdom.documentElement
worksheets = [] # List of string IDs
for worksheetdom in worksheetsdom.childNodes:
if worksheetdom.nodeType == worksheetdom.ELEMENT_NODE:
# (Note: assessable will default to False, unless it is explicitly
# set to "true").
if worksheetdom.getAttribute("assessable") == "true":
assessable_worksheets.append(worksheetdom.getAttribute("id"))
return assessable_worksheets
def get_marks_header(worksheets):
"""
Given a list of strings - the assessable worksheets - returns a new list
of strings - the column headings for the marks section of the CSV output.
"""
return worksheets + ["Total %", "Mark"]
def get_marks_user(subject, worksheet_names, user):
"""
Given a subject, a list of strings (the assessable worksheets), and a user
object, returns the user's percentage for each worksheet, overall, and
their final mark, as a list of strings, in a manner which corresponds to
the headings produced by get_marks_header.
"""
# NOTE: This code is copy/edited from
# www/apps/tutorial/__init__.py:handle_subject_menu
# Should be factored out of there.
worksheet_pcts = []
# As we go, calculate the total score for this subject
# (Assessable worksheets only, mandatory problems only)
problems_done = 0
problems_total = 0
for worksheet_name in worksheet_names:
worksheet = ivle.database.Worksheet.get_by_name(store,
subject, worksheet_name)
# We simply ignore optional exercises here
mand_done, mand_total, _, _ = (
ivle.worksheet.calculate_score(store, user, worksheet))
worksheet_pcts.append(float(mand_done) / mand_total)
problems_done += mand_done
problems_total += mand_total
problems_pct = float(problems_done) / problems_total
problems_pct_int = (100 * problems_done) / problems_total
# XXX Marks calculation (should be abstracted out of here!)
# percent / 16, rounded down, with a maximum mark of 5
max_mark = 5
mark = min(problems_pct_int / 16, max_mark)
return worksheet_pcts + [problems_pct, mark]
def writeuser(subject, worksheets, user, csvfile):
userdata = get_userdata(user)
marksdata = get_marks_user(subject, worksheets, user)
csvfile.writerow(userdata + marksdata)
try:
# Get the list of assessable worksheets from the subject.xml file.
worksheets = get_assessable_worksheets(subject)
store = ivle.database.get_store()
except Exception, message:
print >>sys.stderr, "Error: " + str(message)
sys.exit(1)
# Start writing the CSV file - header
csvfile = csv.writer(sys.stdout)
csvfile.writerow(userdata_header + get_marks_header(worksheets))
for user in store.find(ivle.database.User).order_by(ivle.database.User.login):
writeuser(subject, worksheets, user, csvfile)
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