Mercurial > repos > shellac > guppy_basecaller

annotate env/lib/python3.7/site-packages/virtualenv/run/plugin/base.py @ 0:26e78fe6e8c4 draft

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"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 from __future__ import absolute_import, unicode_literals
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2
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3 import sys
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4 from collections import OrderedDict
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5
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6 if sys.version_info >= (3, 8):
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7 from importlib.metadata import entry_points
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8 else:
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9 from importlib_metadata import entry_points
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10
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11
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12 class PluginLoader(object):
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13 _OPTIONS = None
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14 _ENTRY_POINTS = None
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15
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16 @classmethod
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17 def entry_points_for(cls, key):
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18 return OrderedDict((e.name, e.load()) for e in cls.entry_points().get(key, {}))
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19
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20 @staticmethod
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21 def entry_points():
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22 if PluginLoader._ENTRY_POINTS is None:
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23 PluginLoader._ENTRY_POINTS = entry_points()
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24 return PluginLoader._ENTRY_POINTS
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25
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26
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27 class ComponentBuilder(PluginLoader):
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28 def __init__(self, interpreter, parser, name, possible):
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29 self.interpreter = interpreter
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30 self.name = name
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31 self._impl_class = None
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32 self.possible = possible
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33 self.parser = parser.add_argument_group(title=name)
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34 self.add_selector_arg_parse(name, list(self.possible))
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35
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36 @classmethod
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37 def options(cls, key):
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38 if cls._OPTIONS is None:
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39 cls._OPTIONS = cls.entry_points_for(key)
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40 return cls._OPTIONS
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41
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42 def add_selector_arg_parse(self, name, choices):
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43 raise NotImplementedError
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44
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45 def handle_selected_arg_parse(self, options):
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46 selected = getattr(options, self.name)
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47 if selected not in self.possible:
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48 raise RuntimeError("No implementation for {}".format(self.interpreter))
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49 self._impl_class = self.possible[selected]
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50 self.populate_selected_argparse(selected, options.app_data)
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51 return selected
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52
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53 def populate_selected_argparse(self, selected, app_data):
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54 self.parser.description = "options for {} {}".format(self.name, selected)
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55 self._impl_class.add_parser_arguments(self.parser, self.interpreter, app_data)
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56
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57 def create(self, options):
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58 return self._impl_class(options, self.interpreter)