Source code for satcfdi.zip

import io
from collections import namedtuple
from zipfile import ZipFile, ZipInfo

ZipData = namedtuple("ZipFile", "filename data")


def zip_create(target: io.BytesIO, files: list[ZipData]):
    p = target.tell()

    for f in files:
        with ZipFile(target, "w") as myzip:
            zinfo = ZipInfo(
                filename=f.filename
            )
            zinfo.filename = f.filename
            zinfo.compress_type = 8
            zinfo.create_system = 0

            with myzip.open(zinfo, 'w') as stream:
                zinfo.flag_bits = 2056
                zinfo.external_attr = 0
                f.data(stream)

    with target.getbuffer() as view:  # change zip flag bytes
        view[p + 6:p + 8] = b"\x08\x08"