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import contextlib

import logging

from typing import Generator

from pre_commit import color

from pre_commit import output

logger = logging.getLogger('pre_commit')

LOG_LEVEL_COLORS = {

'DEBUG': '',

'INFO': '',

'WARNING': color.YELLOW,

'ERROR': color.RED,

}

class LoggingHandler(logging.Handler):

def __init__(self, use_color: bool) -> None:

super().__init__()

self.use_color = use_color

def emit(self, record: logging.LogRecord) -> None:

level_msg = color.format_color(

f'[{record.levelname}]',

LOG_LEVEL_COLORS[record.levelname],

self.use_color,

)

output.write_line(f'{level_msg} {record.getMessage()}')

@contextlib.contextmanager

def logging_handler(use_color: bool) -> Generator[None, None, None]:

handler = LoggingHandler(use_color)

logger.addHandler(handler)

logger.setLevel(logging.INFO)

try:

yield

finally:

logger.removeHandler(handler)