79 lines
3.3 KiB
Python
79 lines
3.3 KiB
Python
from collections import OrderedDict, defaultdict, namedtuple
|
|
|
|
from virtualenv.create.describe import Describe
|
|
from virtualenv.create.via_global_ref.builtin.builtin_way import VirtualenvBuiltin
|
|
|
|
from .base import ComponentBuilder
|
|
|
|
CreatorInfo = namedtuple("CreatorInfo", ["key_to_class", "key_to_meta", "describe", "builtin_key"])
|
|
|
|
|
|
class CreatorSelector(ComponentBuilder):
|
|
def __init__(self, interpreter, parser):
|
|
creators, self.key_to_meta, self.describe, self.builtin_key = self.for_interpreter(interpreter)
|
|
super().__init__(interpreter, parser, "creator", creators)
|
|
|
|
@classmethod
|
|
def for_interpreter(cls, interpreter):
|
|
key_to_class, key_to_meta, builtin_key, describe = OrderedDict(), {}, None, None
|
|
errors = defaultdict(list)
|
|
for key, creator_class in cls.options("virtualenv.create").items():
|
|
if key == "builtin":
|
|
raise RuntimeError("builtin creator is a reserved name")
|
|
meta = creator_class.can_create(interpreter)
|
|
if meta:
|
|
if meta.error:
|
|
errors[meta.error].append(creator_class)
|
|
else:
|
|
if "builtin" not in key_to_class and issubclass(creator_class, VirtualenvBuiltin):
|
|
builtin_key = key
|
|
key_to_class["builtin"] = creator_class
|
|
key_to_meta["builtin"] = meta
|
|
key_to_class[key] = creator_class
|
|
key_to_meta[key] = meta
|
|
if describe is None and issubclass(creator_class, Describe) and creator_class.can_describe(interpreter):
|
|
describe = creator_class
|
|
if not key_to_meta:
|
|
if errors:
|
|
rows = [f"{k} for creators {', '.join(i.__name__ for i in v)}" for k, v in errors.items()]
|
|
raise RuntimeError("\n".join(rows))
|
|
else:
|
|
raise RuntimeError(f"No virtualenv implementation for {interpreter}")
|
|
return CreatorInfo(
|
|
key_to_class=key_to_class,
|
|
key_to_meta=key_to_meta,
|
|
describe=describe,
|
|
builtin_key=builtin_key,
|
|
)
|
|
|
|
def add_selector_arg_parse(self, name, choices):
|
|
# prefer the built-in venv if present, otherwise fallback to first defined type
|
|
choices = sorted(choices, key=lambda a: 0 if a == "builtin" else 1)
|
|
default_value = self._get_default(choices)
|
|
self.parser.add_argument(
|
|
f"--{name}",
|
|
choices=choices,
|
|
default=default_value,
|
|
required=False,
|
|
help=f"create environment via{'' if self.builtin_key is None else f' (builtin = {self.builtin_key})'}",
|
|
)
|
|
|
|
@staticmethod
|
|
def _get_default(choices):
|
|
return next(iter(choices))
|
|
|
|
def populate_selected_argparse(self, selected, app_data):
|
|
self.parser.description = f"options for {self.name} {selected}"
|
|
self._impl_class.add_parser_arguments(self.parser, self.interpreter, self.key_to_meta[selected], app_data)
|
|
|
|
def create(self, options):
|
|
options.meta = self.key_to_meta[getattr(options, self.name)]
|
|
if not issubclass(self._impl_class, Describe):
|
|
options.describe = self.describe(options, self.interpreter)
|
|
return super().create(options)
|
|
|
|
|
|
__all__ = [
|
|
"CreatorSelector",
|
|
"CreatorInfo",
|
|
]
|