1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
# SPDX-FileCopyrightText: Peter Pentchev <roam@ringlet.net>
# SPDX-License-Identifier: BSD-2-Clause
"""Helper functions for the regex test tool."""
from __future__ import annotations
import functools
import logging
import sys
import typing
if typing.TYPE_CHECKING:
from typing import Final
@functools.lru_cache
def build_logger(*, quiet: bool = False, verbose: bool = False) -> logging.Logger:
"""Build a logger that outputs to the standard output and error streams.
Messages of level `WARNING` and higher go to the standard error stream.
If `quiet` is false, messages of level `INFO` go to the standard error stream.
If `verbose` is true, messages of level `DEBUG` also go to the standard error stream.
"""
logger: Final = logging.getLogger("temptest")
logger.setLevel(logging.DEBUG if verbose else logging.WARNING if quiet else logging.INFO)
logger.propagate = False
diag_handler: Final = logging.StreamHandler(sys.stderr)
diag_handler.setLevel(logging.DEBUG if verbose else logging.WARNING)
if not quiet:
diag_handler.addFilter(lambda rec: rec.levelno != logging.INFO)
logger.addHandler(diag_handler)
if not quiet:
info_handler: Final = logging.StreamHandler(sys.stderr)
info_handler.setLevel(logging.INFO)
info_handler.addFilter(lambda rec: rec.levelno == logging.INFO)
logger.addHandler(info_handler)
return logger
|
