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 _LOG.debug('loading course from {}'.format(basedir))
43 config = _configparser.ConfigParser()
44 config.read([_os_path.join(basedir, 'course.conf')])
46 for option in ['assignments', 'professors', 'assistants', 'students']:
48 a.strip() for a in config.get('course', option).split(',')]
50 for assignment in names['assignments']:
51 _LOG.debug('loading assignment {}'.format(assignment))
52 assignments.append(load_assignment(
53 name=assignment, data=dict(config.items(assignment))))
55 for group in ['professors', 'assistants', 'students']:
56 for person in names[group]:
58 _LOG.debug('adding person {} to group {}'.format(
60 people[person].groups.append(group)
62 _LOG.debug('loading person {} in group {}'.format(
64 people[person] = load_person(
65 name=person, data=dict(config.items(person)))
66 people[person].groups = [group]
67 people = people.values()
68 grades = list(load_grades(basedir, assignments, people))
69 return _Course(assignments=assignments, people=people, grades=grades)
71 def parse_date(string):
72 """Parse dates given using the W3C DTF profile of ISO 8601.
74 The following are legal formats::
77 YYYY-MM (e.g. 2000-02)
78 YYYY-MM-DD (e.g. 2000-02-12)
79 YYYY-MM-DDThh:mmTZD (e.g. 2000-02-12T06:05+05:30)
80 YYYY-MM-DDThh:mm:ssTZD (e.g. 2000-02-12T06:05:30+05:30)
81 YYYY-MM-DDThh:mm:ss.sTZD (e.g. 2000-02-12T06:05:30.45+05:30)
83 Note that the TZD can be either the capital letter `Z` to indicate
84 UTC time, a string in the format +hh:mm to indicate a local time
85 expressed with a time zone hh hours and mm minutes ahead of UTC or
86 -hh:mm to indicate a local time expressed with a time zone hh
87 hours and mm minutes behind UTC.
90 >>> import email.utils
92 >>> ref = calendar.timegm(time.strptime('2000', '%Y'))
93 >>> y = parse_date('2000')
94 >>> y - ref # seconds between y and ref
96 >>> ym = parse_date('2000-02')
97 >>> (ym - y)/(3600.*24) # days between ym and y
99 >>> ymd = parse_date('2000-02-12')
100 >>> (ymd - ym)/(3600.*24) # days between ymd and ym
102 >>> ymdhm = parse_date('2000-02-12T06:05+05:30')
103 >>> (ymdhm - ymd)/60. # minutes between ymdhm and ymd
105 >>> (ymdhm - parse_date('2000-02-12T06:05Z'))/3600.
107 >>> ymdhms = parse_date('2000-02-12T06:05:30+05:30')
110 >>> (ymdhms - parse_date('2000-02-12T06:05:30Z'))/3600.
112 >>> ymdhms_ms = parse_date('2000-02-12T06:05:30.45+05:30')
113 >>> ymdhms_ms - ymdhms # doctest: +ELLIPSIS
115 >>> (ymdhms_ms - parse_date('2000-02-12T06:05:30.45Z'))/3600.
117 >>> p = parse_date('1994-11-05T08:15:30-05:00')
118 >>> email.utils.formatdate(p, localtime=True)
119 'Sat, 05 Nov 1994 08:15:30 -0500'
120 >>> p - parse_date('1994-11-05T13:15:30Z')
123 m = _DATE_REGEXP.match(string)
125 raise ValueError(string)
126 date,t,time,ms,zone = m.groups()
131 for fmt in ['%Y-%m-%dT%H:%M:%S',
138 ret = _time.strptime(date, fmt)
139 except ValueError as e:
146 ret[-1] = 0 # don't use daylight savings time
147 ret = _calendar.timegm(ret)
150 if zone and zone != 'Z':
151 sign = int(zone[1] + '1')
152 hour,minute = map(int, zone.split(':', 1))
153 offset = sign*(3600*hour + 60*minute)
157 def load_assignment(name, data):
158 r"""Load an assignment from a ``dict``
160 >>> from email.utils import formatdate
161 >>> a = load_assignment(
162 ... name='Attendance 1',
163 ... data={'points': '1',
164 ... 'weight': '0.1/2',
165 ... 'due': '2011-10-04T00:00-04:00',
167 >>> print('{0.name} (points: {0.points}, weight: {0.weight}, due: {0.due})'.format(a))
168 Attendance 1 (points: 1, weight: 0.05, due: 1317700800)
169 >>> print(formatdate(a.due, localtime=True))
170 Tue, 04 Oct 2011 00:00:00 -0400
172 points = int(data['points'])
173 wterms = data['weight'].split('/')
175 weight = float(wterms[0])
177 assert len(wterms) == 2, wterms
178 weight = float(wterms[0])/float(wterms[1])
179 due = parse_date(data['due'])
180 return _Assignment(name=name, points=points, weight=weight, due=due)
182 def load_person(name, data={}):
183 r"""Load a person from a ``dict``
185 >>> from io import StringIO
186 >>> stream = StringIO('''#comment line
187 ... Tom Bombadil <tbomb@oldforest.net> # post address comment
188 ... Tom Bombadil <yellow.boots@oldforest.net>
189 ... Goldberry <gb@oldforest.net>
194 ... data={'nickname': 'G-Man',
195 ... 'emails': 'g@grey.edu, g@greyhavens.net',
196 ... 'pgp-key': '0x0123456789ABCDEF',
198 >>> print('{0.name}: {0.emails}'.format(p))
199 Gandalf: ['g@grey.edu', 'g@greyhavens.net'] | 0x0123456789ABCDEF
200 >>> p = load_person(name='Gandalf')
201 >>> print('{0.name}: {0.emails} | {0.pgp_key}'.format(p))
205 emails = [x.strip() for x in data.get('emails', '').split(',')]
206 emails = list(filter(bool, emails)) # remove blank emails
208 kwargs['emails'] = emails
209 nickname = data.get('nickname', None)
211 kwargs['aliases'] = [nickname]
212 pgp_key = data.get('pgp-key', None)
214 kwargs['pgp_key'] = pgp_key
215 return _Person(name=name, **kwargs)
217 def load_grades(basedir, assignments, people):
218 for assignment in assignments:
219 for person in people:
220 _LOG.debug('loading {} grade for {}'.format(assignment, person))
221 path = assignment_path(basedir, assignment, person)
222 gpath = _os_path.join(path, 'grade')
224 g = _load_grade(_io.open(gpath, 'r', encoding=_ENCODING),
228 #g.late = _os.stat(gpath).st_mtime > assignment.due
229 g.late = _os_path.exists(_os_path.join(path, 'late'))
230 npath = _os_path.join(path, 'notified')
231 if _os_path.exists(npath):
232 g.notified = newer(npath, gpath)
237 def _load_grade(stream, assignment, person):
239 points = float(stream.readline())
241 _sys.stderr.write('failure reading {}, {}\n'.format(
242 assignment.name, person.name))
244 comment = stream.read().strip() or None
246 student=person, assignment=assignment, points=points, comment=comment)
248 def assignment_path(basedir, assignment, person):
249 return _os_path.join(basedir,
250 _filesystem_name(person.name),
251 _filesystem_name(assignment.name))
253 def _filesystem_name(name):
254 for a,b in [(' ', '_'), ('.', ''), ("'", ''), ('"', '')]:
255 name = name.replace(a, b)
258 def set_notified(basedir, grade):
259 """Mark `grade.student` as notified about `grade`
261 path = assignment_path(
262 basedir=basedir, assignment=grade.assignment, person=grade.student)
263 npath = _os_path.join(path, 'notified')
266 def set_late(basedir, assignment, person):
267 path = assignment_path(
268 basedir=basedir, assignment=assignment, person=person)
269 Lpath = _os_path.join(path, 'late')
273 """Touch a file (`path` is created if it doesn't already exist)
275 Also updates the access and modification times to the current
278 >>> from os import listdir, rmdir, unlink
279 >>> from os.path import join
280 >>> from tempfile import mkdtemp
281 >>> d = mkdtemp(prefix='pygrader')
284 >>> p = join(d, 'touched')
292 with open(path, 'a') as f:
294 _os.utime(path, None)
296 def initialize(basedir, course, dry_run=False, **kwargs):
297 """Stub out the directory tree based on the course configuration.
299 for person in course.people:
300 for assignment in course.assignments:
301 path = assignment_path(basedir, assignment, person)
302 if dry_run: # we'll need to guess if mkdirs would work
303 if not _os_path.exists(path):
304 _LOG.debug('creating {}'.format(path))
311 _LOG.debug('creating {}'.format(path))