from typing import Dict, Iterable, List from pip._vendor.pkg_resources import yield_lines class DictMetadata: """IMetadataProvider that reads metadata files from a dictionary.""" def __init__(self, metadata: Dict[str, bytes]) -> None: self._metadata = metadata def has_metadata(self, name: str) -> bool: return name in self._metadata def get_metadata(self, name: str) -> str: try: return self._metadata[name].decode() except UnicodeDecodeError as e: # Mirrors handling done in pkg_resources.NullProvider. e.reason += f" in {name} file" raise def get_metadata_lines(self, name: str) -> Iterable[str]: return yield_lines(self.get_metadata(name)) def metadata_isdir(self, name: str) -> bool: return False def metadata_listdir(self, name: str) -> List[str]: return [] def run_script(self, script_name: str, namespace: str) -> None: pass