Source code for flake8.options.aggregator

"""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__)


[docs]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) # Extend the default ignore value with the extended default ignore list, # registered by plugins. extended_default_ignore = manager.extended_default_ignore.copy() # Let's store our extended default ignore for use by the decision engine default_values.extended_default_ignore = ( manager.extended_default_ignore.copy() ) LOG.debug( "Extended default ignore list: %s", list(extended_default_ignore) ) extended_default_ignore.update(default_values.ignore) default_values.ignore = list(extended_default_ignore) LOG.debug("Merged default ignore list: %s", default_values.ignore) extended_default_select = manager.extended_default_select.copy() LOG.debug( "Extended default select list: %s", list(extended_default_select) ) default_values.extended_default_select = 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)