vfs.py 文件源码

def add_student(self, account, sn=None, pwd=None):
        s = self.vfs.strings

        if sn and (not hasattr(self, '_last_sn') or sn != self._last_sn) and \
            self._is_student_function_enabled(sn):
            self._last_sn = sn

        if hasattr(self, '_last_sn'):
            if hasattr(self, '_queued_addition_requests'):
                queued_addition_requests = self._queued_addition_requests.keys()
                del self._queued_addition_requests
                for request in queued_addition_requests:
                    self.add(request, StudentsStudentDirectory(
                        self.vfs, self, request))
            if hasattr(self, '_queued_deletion_requests'):
                queued_deletion_requests = self._queued_deletion_requests.keys()
                del self._queued_deletion_requests
                for request in queued_deletion_requests:
                    node = self.vfs.open(request, edit_check=False)
                    node.parent.unlink(PurePosixPath(request).name)
            if account not in map(lambda x: x[0], self._children):
                self.add(account, StudentsStudentDirectory(
                    self.vfs, self, account))
        else:
            if not hasattr(self, '_queued_addition_requests'):
                self._queued_addition_requests = OrderedDict()
            self._queued_addition_requests[account] = None

        if pwd:
            depth = 0
            while pwd is not self.vfs.root:
                pwd = pwd.parent
                depth += 1
            return PurePosixPath('../' * depth,
                s['dir_root_students'], account).as_posix()