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Update some docs, and remove other obsolete ones.

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bin/ivle-enrol
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import os
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import sys
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from ivle.database import get_store, Subject, Semester, Offering, User
 
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from ivle.database import get_store, Subject, Semester, Offering, User, \
 
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                          AlreadyEnrolledError
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def die(error):
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    print >> sys.stderr, '%s: %s' % (os.path.basename(sys.argv[0]), error)
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    sys.exit(1)
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if len(sys.argv) not in (5, 6):
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    print >> sys.stderr, '''usage: %s <login> <subjectcode> <year> <semester> [role]
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'role' should be one of student (the default), tutor or lecturer.
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If an enrolment already exists, it will be reactivated and its role set.''' \
 
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if len(sys.argv) != 5:
 
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    print >> sys.stderr, "usage: %s <login> <subjectcode> <year> <semester>" \
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                         % os.path.basename(sys.argv[0])
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    sys.exit()
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if not offering:
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    die("subject offering not found")
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role = unicode(sys.argv[5]) if len(sys.argv) == 6 else u'student'
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if not offering.semester.active:
 
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    die("cannot enrol - semester inactive")
 
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try:
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    offering.enrol(user, role)
 
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    offering.enrol(user)
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except AlreadyEnrolledError:
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    die("already enrolled")
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