import os.path from copy import deepcopy from ..config import Configuration from .base import Source __all__ = ("HomeDirectory", "ConfigDirectory", "FileBasedSource") class DirectoryModifier(object): def __init__(self, target_file): self.target_file = target_file def __call__(self): raise NotImplementedError() class HomeDirectory(DirectoryModifier): def __call__(self): return os.path.expanduser(os.path.join("~", self.target_file)) class ConfigDirectory(DirectoryModifier): def __call__(self): config_dir = os.getenv("XDG_CONFIG_HOME") or os.path.expanduser( os.path.join("~", ".config") ) return os.path.join(config_dir, self.target_file) class FileBasedSource(Source): def __init__(self, files, base_path=None, combine=False): super(FileBasedSource, self).__init__() if isinstance(files, (str, DirectoryModifier)): files = [files] elif not isinstance(files, (tuple, list)): raise TypeError("files must be a string or list of strings") self.files = [] for target in files: if isinstance(target, str): self.files.append(target) elif isinstance(target, DirectoryModifier): self.files.append(target()) else: raise TypeError("files must be a string or list of strings") self.base_path = base_path or os.getcwd() self.combine = combine def get_config(self, settings, manager=None, parent=None): parsed_settings = [] for file_source in self.files: if os.path.isabs(file_source): file_path = file_source else: file_path = os.path.join(self.base_path, file_source) if os.path.exists(file_path): file_settings = self.get_settings_from_file( file_path, deepcopy(settings), manager=manager ) if file_settings: parsed_settings.append(file_settings) if not self.combine: # No need to gather any more, we only want one. break if parsed_settings: config = parent for parsed_setting in reversed(parsed_settings): config = Configuration(settings=parsed_setting, parent=config) else: config = Configuration(settings=settings, parent=parent) return config def get_settings_from_file(self, file_path, settings, manager=None): raise NotImplementedError()