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54 lines
2.1 KiB
Python
54 lines
2.1 KiB
Python
5 years ago
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from __future__ import absolute_import, unicode_literals
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from argparse import ArgumentTypeError
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from collections import OrderedDict
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from .base import ComponentBuilder
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class ActivationSelector(ComponentBuilder):
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def __init__(self, interpreter, parser):
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self.default = None
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possible = OrderedDict(
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(k, v) for k, v in self.options("virtualenv.activate").items() if v.supports(interpreter)
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)
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super(ActivationSelector, self).__init__(interpreter, parser, "activators", possible)
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self.parser.description = "options for activation scripts"
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self.active = None
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def add_selector_arg_parse(self, name, choices):
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self.default = ",".join(choices)
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self.parser.add_argument(
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"--{}".format(name),
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default=self.default,
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metavar="comma_sep_list",
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required=False,
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help="activators to generate - default is all supported",
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type=self._extract_activators,
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)
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def _extract_activators(self, entered_str):
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elements = [e.strip() for e in entered_str.split(",") if e.strip()]
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missing = [e for e in elements if e not in self.possible]
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if missing:
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raise ArgumentTypeError("the following activators are not available {}".format(",".join(missing)))
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return elements
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def handle_selected_arg_parse(self, options):
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selected_activators = (
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self._extract_activators(self.default) if options.activators is self.default else options.activators
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)
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self.active = {k: v for k, v in self.possible.items() if k in selected_activators}
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self.parser.add_argument(
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"--prompt",
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dest="prompt",
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metavar="prompt",
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help="provides an alternative prompt prefix for this environment",
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default=None,
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)
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for activator in self.active.values():
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activator.add_parser_arguments(self.parser, self.interpreter)
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def create(self, options):
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return [activator_class(options) for activator_class in self.active.values()]
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