Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/virtualenv/run/plugin/creators.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 from __future__ import absolute_import, unicode_literals
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2
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3 from collections import OrderedDict, defaultdict, namedtuple
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4
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5 from virtualenv.create.describe import Describe
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6 from virtualenv.create.via_global_ref.builtin.builtin_way import VirtualenvBuiltin
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7
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8 from .base import ComponentBuilder
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9
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10 CreatorInfo = namedtuple("CreatorInfo", ["key_to_class", "key_to_meta", "describe", "builtin_key"])
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11
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12
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13 class CreatorSelector(ComponentBuilder):
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14 def __init__(self, interpreter, parser):
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15 creators, self.key_to_meta, self.describe, self.builtin_key = self.for_interpreter(interpreter)
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16 super(CreatorSelector, self).__init__(interpreter, parser, "creator", creators)
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17
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18 @classmethod
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19 def for_interpreter(cls, interpreter):
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20 key_to_class, key_to_meta, builtin_key, describe = OrderedDict(), {}, None, None
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21 errored = defaultdict(list)
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22 for key, creator_class in cls.options("virtualenv.create").items():
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23 if key == "builtin":
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24 raise RuntimeError("builtin creator is a reserved name")
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25 meta = creator_class.can_create(interpreter)
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26 if meta:
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27 if meta.error:
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28 errored[meta.error].append(creator_class)
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29 else:
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30 if "builtin" not in key_to_class and issubclass(creator_class, VirtualenvBuiltin):
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31 builtin_key = key
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32 key_to_class["builtin"] = creator_class
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33 key_to_meta["builtin"] = meta
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34 key_to_class[key] = creator_class
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35 key_to_meta[key] = meta
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36 if describe is None and issubclass(creator_class, Describe) and creator_class.can_describe(interpreter):
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37 describe = creator_class
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38 if not key_to_meta:
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39 if errored:
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40 raise RuntimeError(
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41 "\n".join(
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42 "{} for creators {}".format(k, ", ".join(i.__name__ for i in v)) for k, v in errored.items()
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43 ),
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44 )
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45 else:
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46 raise RuntimeError("No virtualenv implementation for {}".format(interpreter))
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47 return CreatorInfo(
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48 key_to_class=key_to_class, key_to_meta=key_to_meta, describe=describe, builtin_key=builtin_key,
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49 )
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50
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51 def add_selector_arg_parse(self, name, choices):
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52 # prefer the built-in venv if present, otherwise fallback to first defined type
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53 choices = sorted(choices, key=lambda a: 0 if a == "builtin" else 1)
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54 default_value = self._get_default(choices)
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55 self.parser.add_argument(
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56 "--{}".format(name),
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57 choices=choices,
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58 default=default_value,
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59 required=False,
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60 help="create environment via{}".format(
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61 "" if self.builtin_key is None else " (builtin = {})".format(self.builtin_key),
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62 ),
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63 )
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64
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65 @staticmethod
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66 def _get_default(choices):
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67 return next(iter(choices))
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68
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69 def populate_selected_argparse(self, selected, app_data):
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70 self.parser.description = "options for {} {}".format(self.name, selected)
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71 self._impl_class.add_parser_arguments(self.parser, self.interpreter, self.key_to_meta[selected], app_data)
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72
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73 def create(self, options):
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74 options.meta = self.key_to_meta[getattr(options, self.name)]
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75 if not issubclass(self._impl_class, Describe):
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76 options.describe = self.describe(options, self.interpreter)
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77 return super(CreatorSelector, self).create(options)