Mercurial > repos > shellac > sam_consensus_v3
view env/lib/python3.9/site-packages/virtualenv/run/plugin/base.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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from __future__ import absolute_import, unicode_literals import sys from collections import OrderedDict if sys.version_info >= (3, 8): from importlib.metadata import entry_points else: from importlib_metadata import entry_points class PluginLoader(object): _OPTIONS = None _ENTRY_POINTS = None @classmethod def entry_points_for(cls, key): return OrderedDict((e.name, e.load()) for e in cls.entry_points().get(key, {})) @staticmethod def entry_points(): if PluginLoader._ENTRY_POINTS is None: PluginLoader._ENTRY_POINTS = entry_points() return PluginLoader._ENTRY_POINTS class ComponentBuilder(PluginLoader): def __init__(self, interpreter, parser, name, possible): self.interpreter = interpreter self.name = name self._impl_class = None self.possible = possible self.parser = parser.add_argument_group(title=name) self.add_selector_arg_parse(name, list(self.possible)) @classmethod def options(cls, key): if cls._OPTIONS is None: cls._OPTIONS = cls.entry_points_for(key) return cls._OPTIONS def add_selector_arg_parse(self, name, choices): raise NotImplementedError def handle_selected_arg_parse(self, options): selected = getattr(options, self.name) if selected not in self.possible: raise RuntimeError("No implementation for {}".format(self.interpreter)) self._impl_class = self.possible[selected] self.populate_selected_argparse(selected, options.app_data) return selected def populate_selected_argparse(self, selected, app_data): self.parser.description = "options for {} {}".format(self.name, selected) self._impl_class.add_parser_arguments(self.parser, self.interpreter, app_data) def create(self, options): return self._impl_class(options, self.interpreter)