"""Aggregation function for CLI specified options and config file options.
This holds the logic that uses the collected and merged config files and
applies the user-specified command-line configuration on top of it.
"""
import argparse
import configparser
import logging
from typing import Optional
from typing import Sequence
from flake8.options import config
from flake8.options.manager import OptionManager
LOG = logging.getLogger(__name__)
def aggregate_options(
manager: OptionManager,
cfg: configparser.RawConfigParser,
cfg_dir: str,
argv: Optional[Sequence[str]],
) -> argparse.Namespace:
"""Aggregate and merge CLI and config file options."""
# Get defaults from the option parser
default_values = manager.parse_args([])
# Get the parsed config
parsed_config = config.parse_config(manager, cfg, cfg_dir)
# store the plugin-set extended default ignore / select
default_values.extended_default_ignore = manager.extended_default_ignore
default_values.extended_default_select = manager.extended_default_select
# Merge values parsed from config onto the default values returned
for config_name, value in parsed_config.items():
dest_name = config_name
# If the config name is somehow different from the destination name,
# fetch the destination name from our Option
if not hasattr(default_values, config_name):
dest_val = manager.config_options_dict[config_name].dest
assert isinstance(dest_val, str)
dest_name = dest_val
LOG.debug(
'Overriding default value of (%s) for "%s" with (%s)',
getattr(default_values, dest_name, None),
dest_name,
value,
)
# Override the default values with the config values
setattr(default_values, dest_name, value)
# Finally parse the command-line options
return manager.parse_args(argv, default_values)
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