pyproject.pyā¢2.05 kB
"""Pyproject TOML file settings source."""
from __future__ import annotations as _annotations
from pathlib import Path
from typing import (
TYPE_CHECKING,
)
from .toml import TomlConfigSettingsSource
if TYPE_CHECKING:
from pydantic_settings.main import BaseSettings
class PyprojectTomlConfigSettingsSource(TomlConfigSettingsSource):
"""
A source class that loads variables from a `pyproject.toml` file.
"""
def __init__(
self,
settings_cls: type[BaseSettings],
toml_file: Path | None = None,
) -> None:
self.toml_file_path = self._pick_pyproject_toml_file(
toml_file, settings_cls.model_config.get('pyproject_toml_depth', 0)
)
self.toml_table_header: tuple[str, ...] = settings_cls.model_config.get(
'pyproject_toml_table_header', ('tool', 'pydantic-settings')
)
self.toml_data = self._read_files(self.toml_file_path)
for key in self.toml_table_header:
self.toml_data = self.toml_data.get(key, {})
super(TomlConfigSettingsSource, self).__init__(settings_cls, self.toml_data)
@staticmethod
def _pick_pyproject_toml_file(provided: Path | None, depth: int) -> Path:
"""Pick a `pyproject.toml` file path to use.
Args:
provided: Explicit path provided when instantiating this class.
depth: Number of directories up the tree to check of a pyproject.toml.
"""
if provided:
return provided.resolve()
rv = Path.cwd() / 'pyproject.toml'
count = 0
if not rv.is_file():
child = rv.parent.parent / 'pyproject.toml'
while count < depth:
if child.is_file():
return child
if str(child.parent) == rv.root:
break # end discovery after checking system root once
child = child.parent.parent / 'pyproject.toml'
count += 1
return rv
__all__ = ['PyprojectTomlConfigSettingsSource']