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1# This file is part of daf_butler. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (http://www.lsst.org). 

6# See the COPYRIGHT file at the top-level directory of this distribution 

7# for details of code ownership. 

8# 

9# This program is free software: you can redistribute it and/or modify 

10# it under the terms of the GNU General Public License as published by 

11# the Free Software Foundation, either version 3 of the License, or 

12# (at your option) any later version. 

13# 

14# This program is distributed in the hope that it will be useful, 

15# but WITHOUT ANY WARRANTY; without even the implied warranty of 

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

19# You should have received a copy of the GNU General Public License 

20# along with this program. If not, see <http://www.gnu.org/licenses/>. 

21 

22 

23import click 

24 

25allowed_types = ["auto", "link", "symlink", "hardlink", "copy", "move", "relsymlink"] 

26 

27 

28class transfer_option: # noqa: N801 

29 def __init__(self, required=False, help=None): 

30 self.required = required 

31 self.help = "The external data transfer mode." if help is None else help 

32 

33 def __call__(self, f): 

34 return click.option("-t", "--transfer", 

35 default="auto", 

36 type=click.Choice(allowed_types), 

37 required=self.required, 

38 help=self.help)(f)