festival.edmaven.com:80

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173.231.212.80

File Name : config.py

from __future__ import annotations

import os
import typing
import warnings
from pathlib import Path

class undefined:
    pass

class EnvironError(Exception):
    pass

class Environ(typing.MutableMapping[str, str]):
    def __init__(self, environ: typing.MutableMapping[str, str] = os.environ):
        self._environ = environ
        self._has_been_read: set[str] = set()

def __getitem__(self, key: str) -> str:
        self._has_been_read.add(key)
        return self._environ.__getitem__(key)

def __setitem__(self, key: str, value: str) -> None:
        if key in self._has_been_read:
            raise EnvironError(f"Attempting to set environ['{key}'], but the value has already been read.")
        self._environ.__setitem__(key, value)

def __delitem__(self, key: str) -> None:
        if key in self._has_been_read:
            raise EnvironError(f"Attempting to delete environ['{key}'], but the value has already been read.")
        self._environ.__delitem__(key)

def __iter__(self) -> typing.Iterator[str]:
        return iter(self._environ)

def __len__(self) -> int:
        return len(self._environ)

environ = Environ()

T = typing.TypeVar("T")

class Config:
    def __init__(
        self,
        env_file: str | Path | None = None,
        environ: typing.Mapping[str, str] = environ,
        env_prefix: str = "",
    ) -> None:
        self.environ = environ
        self.env_prefix = env_prefix
        self.file_values: dict[str, str] = {}
        if env_file is not None:
            if not os.path.isfile(env_file):
                warnings.warn(f"Config file '{env_file}' not found.")
            else:
                self.file_values = self._read_file(env_file)

@typing.overload
    def __call__(self, key: str, *, default: None) -> str | None: ...

@typing.overload
    def __call__(self, key: str, cast: type[T], default: T = ...) -> T: ...

@typing.overload
    def __call__(self, key: str, cast: type[str] = ..., default: str = ...) -> str: ...

@typing.overload
    def __call__(
        self,
        key: str,
        cast: typing.Callable[[typing.Any], T] = ...,
        default: typing.Any = ...,
    ) -> T: ...

@typing.overload
    def __call__(self, key: str, cast: type[str] = ..., default: T = ...) -> T | str: ...

def __call__(
        self,
        key: str,
        cast: typing.Callable[[typing.Any], typing.Any] | None = None,
        default: typing.Any = undefined,
    ) -> typing.Any:
        return self.get(key, cast, default)

def get(
        self,
        key: str,
        cast: typing.Callable[[typing.Any], typing.Any] | None = None,
        default: typing.Any = undefined,
    ) -> typing.Any:
        key = self.env_prefix + key
        if key in self.environ:
            value = self.environ[key]
            return self._perform_cast(key, value, cast)
        if key in self.file_values:
            value = self.file_values[key]
            return self._perform_cast(key, value, cast)
        if default is not undefined:
            return self._perform_cast(key, default, cast)
        raise KeyError(f"Config '{key}' is missing, and has no default.")

def _read_file(self, file_name: str | Path) -> dict[str, str]:
        file_values: dict[str, str] = {}
        with open(file_name) as input_file:
            for line in input_file.readlines():
                line = line.strip()
                if "=" in line and not line.startswith("#"):
                    key, value = line.split("=", 1)
                    key = key.strip()
                    value = value.strip().strip("\"'")
                    file_values[key] = value
        return file_values

def _perform_cast(
        self,
        key: str,
        value: typing.Any,
        cast: typing.Callable[[typing.Any], typing.Any] | None = None,
    ) -> typing.Any:
        if cast is None or value is None:
            return value
        elif cast is bool and isinstance(value, str):
            mapping = {"true": True, "1": True, "false": False, "0": False}
            value = value.lower()
            if value not in mapping:
                raise ValueError(f"Config '{key}' has value '{value}'. Not a valid bool.")
            return mapping[value]
        try:
            return cast(value)
        except (TypeError, ValueError):
            raise ValueError(f"Config '{key}' has value '{value}'. Not a valid {cast.__name__}.")

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-01-07 04:51:51
..	dir	-	root/root	0755	2026-06-01 12:02:46
__pycache__	dir	-	root/root	0755	2025-01-07 04:51:51
middleware	dir	-	root/root	0755	2025-01-07 04:51:51
__init__.py	text/plain	23 B	root/root	0644	2025-01-06 04:11:17
_compat.py	text/plain	1.11 KB	root/root	0644	2025-01-06 04:11:17
_exception_handler.py	text/x-python	2.18 KB	root/root	0644	2025-01-06 04:11:17
_utils.py	text/x-python	2.65 KB	root/root	0644	2025-01-06 04:11:17
applications.py	text/x-python	10.2 KB	root/root	0644	2025-01-06 04:11:17
authentication.py	text/x-python	4.83 KB	root/root	0644	2025-01-06 04:11:17
background.py	text/x-python	1.23 KB	root/root	0644	2025-01-06 04:11:17
concurrency.py	text/x-python	1.81 KB	root/root	0644	2025-01-06 04:11:17
config.py	text/x-python	4.34 KB	root/root	0644	2025-01-06 04:11:17
convertors.py	text/x-python	2.23 KB	root/root	0644	2025-01-06 04:11:17
datastructures.py	text/x-python	21.81 KB	root/root	0644	2025-01-06 04:11:17
endpoints.py	text/x-python	4.96 KB	root/root	0644	2025-01-06 04:11:17
exceptions.py	text/x-python	1.78 KB	root/root	0644	2025-01-06 04:11:17
formparsers.py	text/x-python	10.53 KB	root/root	0644	2025-01-06 04:11:17
py.typed	application/x-empty	0 B	root/root	0644	2025-01-06 04:11:17
requests.py	text/x-python	11.13 KB	root/root	0644	2025-01-06 04:11:17
responses.py	text/x-python	19.58 KB	root/root	0644	2025-01-06 04:11:17
routing.py	text/x-python	33.7 KB	root/root	0644	2025-01-06 04:11:17
schemas.py	text/x-python	5.06 KB	root/root	0644	2025-01-06 04:11:17
staticfiles.py	text/x-python	8.23 KB	root/root	0644	2025-01-06 04:11:17
status.py	text/plain	5.96 KB	root/root	0644	2025-01-06 04:11:17
templating.py	text/x-python	8.17 KB	root/root	0644	2025-01-06 04:11:17
testclient.py	text/x-python	29.26 KB	root/root	0644	2025-01-06 04:11:17
types.py	text/plain	1.02 KB	root/root	0644	2025-01-06 04:11:17
websockets.py	text/x-python	8.12 KB	root/root	0644	2025-01-06 04:11:17