lsf.py 文件源码

def __init__(self, lsf_path: str, types: List[Type[pyimc.Message]] = None, make_index=True):
        """
        Reads an LSF file.
        :param lsf_path: The path to the LSF file.
        :param types: The message types to return. List of pyimc message classes.
        :param make_index: If true, an index that speeds up subsequent reads is created.
        """
        self.fpath = lsf_path
        self.f = None  # type: io.BufferedIOBase
        self.header = IMCHeader()  # Preallocate header buffer
        self.parser = pyimc.Parser()
        self.idx = {}  # type: Dict[Union[int, str], List[int]]
        self.make_index = make_index

        if types:
            self.msg_types = [pyimc.Factory.id_from_abbrev(x.__name__) for x in types]
        else:
            self.msg_types = None