1 # Copyright (C) 2012 W. Trevor King <wking@drexel.edu>
3 # This file is part of pygrader.
5 # pygrader is free software: you can redistribute it and/or modify it under the
6 # terms of the GNU General Public License as published by the Free Software
7 # Foundation, either version 3 of the License, or (at your option) any later
10 # pygrader is distributed in the hope that it will be useful, but WITHOUT ANY
11 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License along with
15 # pygrader. If not, see <http://www.gnu.org/licenses/>.
17 from __future__ import absolute_import
19 import calendar as _calendar
20 import configparser as _configparser
21 import email.utils as _email_utils
24 import os.path as _os_path
29 from . import LOG as _LOG
30 from . import ENCODING as _ENCODING
31 from .model.assignment import Assignment as _Assignment
32 from .model.course import Course as _Course
33 from .model.grade import Grade as _Grade
34 from .model.person import Person as _Person
35 from .todo import newer
38 _DATE_REGEXP = _re.compile('^([^T]*)(T?)([^TZ+-.]*)([.]?[0-9]*)([+-][0-9:]*|Z?)$')
41 def load_course(basedir):
42 """Load a course directory.
44 >>> from pygrader.test.course import StubCourse
45 >>> stub_course = StubCourse(load=False)
46 >>> course = load_course(basedir=stub_course.basedir)
49 >>> course.assignments # doctest: +ELLIPSIS
50 [<pygrader.model.assignment.Assignment object at 0x...>, ...]
51 >>> course.people # doctest: +ELLIPSIS
52 [<pygrader.model.person.Person object at 0x...>, ...]
56 _LOG.debug('loading course from {}'.format(basedir))
57 config = _configparser.ConfigParser()
58 config.read([_os_path.join(basedir, 'course.conf')])
59 name = config.get('course', 'name')
61 for option in ['assignments', 'professors', 'assistants', 'students']:
63 a.strip() for a in config.get('course', option).split(',')]
65 for assignment in names['assignments']:
66 _LOG.debug('loading assignment {}'.format(assignment))
67 assignments.append(load_assignment(
68 name=assignment, data=dict(config.items(assignment))))
70 for group in ['professors', 'assistants', 'students']:
71 for person in names[group]:
73 _LOG.debug('adding person {} to group {}'.format(
75 people[person].groups.append(group)
77 _LOG.debug('loading person {} in group {}'.format(
79 people[person] = load_person(
80 name=person, data=dict(config.items(person)))
81 people[person].groups = [group]
82 people = people.values()
83 grades = list(load_grades(basedir, assignments, people))
85 name=name, assignments=assignments, people=people, grades=grades)
87 def parse_date(string):
88 """Parse dates given using the W3C DTF profile of ISO 8601.
90 The following are legal formats::
93 YYYY-MM (e.g. 2000-02)
94 YYYY-MM-DD (e.g. 2000-02-12)
95 YYYY-MM-DDThh:mmTZD (e.g. 2000-02-12T06:05+05:30)
96 YYYY-MM-DDThh:mm:ssTZD (e.g. 2000-02-12T06:05:30+05:30)
97 YYYY-MM-DDThh:mm:ss.sTZD (e.g. 2000-02-12T06:05:30.45+05:30)
99 Note that the TZD can be either the capital letter `Z` to indicate
100 UTC time, a string in the format +hh:mm to indicate a local time
101 expressed with a time zone hh hours and mm minutes ahead of UTC or
102 -hh:mm to indicate a local time expressed with a time zone hh
103 hours and mm minutes behind UTC.
106 >>> import email.utils
108 >>> ref = calendar.timegm(time.strptime('2000', '%Y'))
109 >>> y = parse_date('2000')
110 >>> y - ref # seconds between y and ref
112 >>> ym = parse_date('2000-02')
113 >>> (ym - y)/(3600.*24) # days between ym and y
115 >>> ymd = parse_date('2000-02-12')
116 >>> (ymd - ym)/(3600.*24) # days between ymd and ym
118 >>> ymdhm = parse_date('2000-02-12T06:05+05:30')
119 >>> (ymdhm - ymd)/60. # minutes between ymdhm and ymd
121 >>> (ymdhm - parse_date('2000-02-12T06:05Z'))/3600.
123 >>> ymdhms = parse_date('2000-02-12T06:05:30+05:30')
126 >>> (ymdhms - parse_date('2000-02-12T06:05:30Z'))/3600.
128 >>> ymdhms_ms = parse_date('2000-02-12T06:05:30.45+05:30')
129 >>> ymdhms_ms - ymdhms # doctest: +ELLIPSIS
131 >>> (ymdhms_ms - parse_date('2000-02-12T06:05:30.45Z'))/3600.
133 >>> p = parse_date('1994-11-05T08:15:30-05:00')
134 >>> email.utils.formatdate(p, localtime=True)
135 'Sat, 05 Nov 1994 08:15:30 -0500'
136 >>> p - parse_date('1994-11-05T13:15:30Z')
139 m = _DATE_REGEXP.match(string)
141 raise ValueError(string)
142 date,t,time,ms,zone = m.groups()
147 for fmt in ['%Y-%m-%dT%H:%M:%S',
154 ret = _time.strptime(date, fmt)
155 except ValueError as e:
162 ret[-1] = 0 # don't use daylight savings time
163 ret = _calendar.timegm(ret)
166 if zone and zone != 'Z':
167 sign = int(zone[1] + '1')
168 hour,minute = map(int, zone.split(':', 1))
169 offset = sign*(3600*hour + 60*minute)
173 def load_assignment(name, data):
174 r"""Load an assignment from a ``dict``
176 >>> from email.utils import formatdate
177 >>> a = load_assignment(
178 ... name='Attendance 1',
179 ... data={'points': '1',
180 ... 'weight': '0.1/2',
181 ... 'due': '2011-10-04T00:00-04:00',
183 >>> print('{0.name} (points: {0.points}, weight: {0.weight}, due: {0.due})'.format(a))
184 Attendance 1 (points: 1, weight: 0.05, due: 1317700800)
185 >>> print(formatdate(a.due, localtime=True))
186 Tue, 04 Oct 2011 00:00:00 -0400
188 points = int(data['points'])
189 wterms = data['weight'].split('/')
191 weight = float(wterms[0])
193 assert len(wterms) == 2, wterms
194 weight = float(wterms[0])/float(wterms[1])
195 due = parse_date(data['due'])
196 return _Assignment(name=name, points=points, weight=weight, due=due)
198 def load_person(name, data={}):
199 r"""Load a person from a ``dict``
201 >>> from io import StringIO
202 >>> stream = StringIO('''#comment line
203 ... Tom Bombadil <tbomb@oldforest.net> # post address comment
204 ... Tom Bombadil <yellow.boots@oldforest.net>
205 ... Goldberry <gb@oldforest.net>
210 ... data={'nickname': 'G-Man',
211 ... 'emails': 'g@grey.edu, g@greyhavens.net',
212 ... 'pgp-key': '0x0123456789ABCDEF',
214 >>> print('{0.name}: {0.emails} | {0.pgp_key}'.format(p))
215 Gandalf: ['g@grey.edu', 'g@greyhavens.net'] | 0x0123456789ABCDEF
216 >>> p = load_person(name='Gandalf')
217 >>> print('{0.name}: {0.emails} | {0.pgp_key}'.format(p))
221 emails = [x.strip() for x in data.get('emails', '').split(',')]
222 emails = list(filter(bool, emails)) # remove blank emails
224 kwargs['emails'] = emails
225 nickname = data.get('nickname', None)
227 kwargs['aliases'] = [nickname]
228 pgp_key = data.get('pgp-key', None)
230 kwargs['pgp_key'] = pgp_key
231 return _Person(name=name, **kwargs)
233 def load_grades(basedir, assignments, people):
234 for assignment in assignments:
235 for person in people:
236 _LOG.debug('loading {} grade for {}'.format(assignment, person))
237 path = assignment_path(basedir, assignment, person)
238 gpath = _os_path.join(path, 'grade')
240 g = _load_grade(_io.open(gpath, 'r', encoding=_ENCODING),
244 #g.late = _os.stat(gpath).st_mtime > assignment.due
245 g.late = _os_path.exists(_os_path.join(path, 'late'))
246 npath = _os_path.join(path, 'notified')
247 if _os_path.exists(npath):
248 g.notified = newer(npath, gpath)
253 def _load_grade(stream, assignment, person):
255 points = float(stream.readline())
257 _sys.stderr.write('failure reading {}, {}\n'.format(
258 assignment.name, person.name))
260 comment = stream.read().strip() or None
262 student=person, assignment=assignment, points=points, comment=comment)
264 def assignment_path(basedir, assignment, person):
265 return _os_path.join(basedir,
266 _filesystem_name(person.name),
267 _filesystem_name(assignment.name))
269 def _filesystem_name(name):
270 for a,b in [(' ', '_'), ('.', ''), ("'", ''), ('"', '')]:
271 name = name.replace(a, b)
274 def set_notified(basedir, grade):
275 """Mark `grade.student` as notified about `grade`
277 path = assignment_path(
278 basedir=basedir, assignment=grade.assignment, person=grade.student)
279 npath = _os_path.join(path, 'notified')
282 def set_late(basedir, assignment, person):
283 path = assignment_path(
284 basedir=basedir, assignment=assignment, person=person)
285 Lpath = _os_path.join(path, 'late')
289 """Touch a file (`path` is created if it doesn't already exist)
291 Also updates the access and modification times to the current
294 >>> from os import listdir, rmdir, unlink
295 >>> from os.path import join
296 >>> from tempfile import mkdtemp
297 >>> d = mkdtemp(prefix='pygrader')
300 >>> p = join(d, 'touched')
308 with open(path, 'a') as f:
310 _os.utime(path, None)
312 def initialize(basedir, course, dry_run=False, **kwargs):
313 """Stub out the directory tree based on the course configuration.
315 for person in course.people:
316 for assignment in course.assignments:
317 path = assignment_path(basedir, assignment, person)
318 if dry_run: # we'll need to guess if mkdirs would work
319 if not _os_path.exists(path):
320 _LOG.debug('creating {}'.format(path))
327 _LOG.debug('creating {}'.format(path))