101 lines
2.7 KiB
Python
101 lines
2.7 KiB
Python
from __future__ import annotations
|
|
|
|
import logging
|
|
import os
|
|
from typing import ClassVar
|
|
|
|
|
|
class TypeData:
|
|
def __init__(self, default_type, as_type) -> None:
|
|
self.default_type = default_type
|
|
self.as_type = as_type
|
|
|
|
def __repr__(self) -> str:
|
|
return f"{self.__class__.__name__}(base={self.default_type}, as={self.as_type})"
|
|
|
|
def convert(self, value):
|
|
return self.default_type(value)
|
|
|
|
|
|
class BoolType(TypeData):
|
|
BOOLEAN_STATES: ClassVar[dict[str, bool]] = {
|
|
"1": True,
|
|
"yes": True,
|
|
"true": True,
|
|
"on": True,
|
|
"0": False,
|
|
"no": False,
|
|
"false": False,
|
|
"off": False,
|
|
}
|
|
|
|
def convert(self, value):
|
|
if value.lower() not in self.BOOLEAN_STATES:
|
|
msg = f"Not a boolean: {value}"
|
|
raise ValueError(msg)
|
|
return self.BOOLEAN_STATES[value.lower()]
|
|
|
|
|
|
class NoneType(TypeData):
|
|
def convert(self, value):
|
|
if not value:
|
|
return None
|
|
return str(value)
|
|
|
|
|
|
class ListType(TypeData):
|
|
def _validate(self):
|
|
"""no op."""
|
|
|
|
def convert(self, value, flatten=True): # noqa: ARG002, FBT002
|
|
values = self.split_values(value)
|
|
result = []
|
|
for a_value in values:
|
|
sub_values = a_value.split(os.pathsep)
|
|
result.extend(sub_values)
|
|
return [self.as_type(i) for i in result]
|
|
|
|
def split_values(self, value):
|
|
"""
|
|
Split the provided value into a list.
|
|
|
|
First this is done by newlines. If there were no newlines in the text,
|
|
then we next try to split by comma.
|
|
"""
|
|
if isinstance(value, (str, bytes)):
|
|
# Use `splitlines` rather than a custom check for whether there is
|
|
# more than one line. This ensures that the full `splitlines()`
|
|
# logic is supported here.
|
|
values = value.splitlines()
|
|
if len(values) <= 1:
|
|
values = value.split(",")
|
|
values = filter(None, [x.strip() for x in values])
|
|
else:
|
|
values = list(value)
|
|
|
|
return values
|
|
|
|
|
|
def convert(value, as_type, source):
|
|
"""Convert the value as a given type where the value comes from the given source."""
|
|
try:
|
|
return as_type.convert(value)
|
|
except Exception as exception:
|
|
logging.warning("%s failed to convert %r as %r because %r", source, value, as_type, exception)
|
|
raise
|
|
|
|
|
|
_CONVERT = {bool: BoolType, type(None): NoneType, list: ListType}
|
|
|
|
|
|
def get_type(action):
|
|
default_type = type(action.default)
|
|
as_type = default_type if action.type is None else action.type
|
|
return _CONVERT.get(default_type, TypeData)(default_type, as_type)
|
|
|
|
|
|
__all__ = [
|
|
"convert",
|
|
"get_type",
|
|
]
|