Method _chmod

pex/common.py:441–454

(
        info,  # type: ZipInfo
        path,  # type: Text
    )

    @staticmethod
    def _chmod(
        info,  # type: ZipInfo
        path,  # type: Text
    ):
        # type: (...) -> None

        # This magic works to extract perm bits from the 32 bit external file attributes field for
        # unix-created zip files, for the layout, see:
        #   https://www.forensicswiki.org/wiki/ZIP#External_file_attributes
        if info.external_attr > 0xFFFF:
            attr = info.external_attr >> 16
            # If the archive file was executable, we set the extracted file as executable.
            if stat.S_ISREG(attr) and attr & 0o111:
                chmod_plus_x(path)

    # Python 3 also takes PathLike[str] for the path arg, but we only ever pass str since we support
    # Python 2.7 and don't use pathlib as a result.