def from_allft_7z(cls: Type[AllFTTypeVar],
filename: Union[str, Path]) -> AllFTTypeVar:
from libarchive.public import memory_reader
_prepare_libarchive()
with open(filename, "rb") as fh:
with memory_reader(fh.read()) as entries:
b = BytesIO()
for file in entries:
for block in file.get_blocks():
b.write(block)
cumul = list()
max_, current, previous = b.tell(), 0, 0
b.seek(0)
iterator = pd.read_csv(
b,
header=None,
names=allft_fields,
sep=";",
dtype={
"aobt": str,
"iobt": str,
"cobt": str,
"eobt": str,
"arcAddr": str,
},
skiprows=1,
chunksize=2000,
)
with tqdm(total=max_, unit="B", unit_scale=True,
unit_divisor=1024) as pbar:
for chunk in iterator:
cumul.append(
chunk.assign(
icao24=lambda df: df.arcAddr.str.lower(),
aobt=lambda df: parse_date(df.aobt),
iobt=lambda df: parse_date(df.iobt),
cobt=lambda df: parse_date(df.cobt),
eobt=lambda df: parse_date(df.eobt),
).rename(
columns={
"departureAerodromeIcaoId": "origin",
"arrivalAerodromeIcaoId": "destination",
"aircraftId": "callsign",
"aobt": "AOBT",
"iobt": "IOBT",
"cobt": "COBT",
"eobt": "EOBT",
}))
current = b.tell()
if current != previous:
pbar.update(current - previous)
previous = current
return cls(pd.concat(cumul, sort=False).sort_values("EOBT"))
def from_so6_7z(self, filename: Union[str, Path]) -> "SO6":
from libarchive.public import memory_reader
with open(filename, "rb") as fh:
with memory_reader(fh.read()) as entries:
s = StringIO()
for file in entries:
for block in file.get_blocks():
s.write(block.decode())
s.seek(0)
so6 = SO6.from_so6(s)
s.close()
return so6
def from_so6_7z(cls: Type[SO6TypeVar],
filename: Union[str, Path]) -> SO6TypeVar:
_prepare_libarchive()
from libarchive.public import memory_reader
with open(filename, "rb") as fh:
with memory_reader(fh.read()) as entries:
s = StringIO()
for file in entries:
for block in file.get_blocks():
s.write(block.decode())
s.seek(0)
so6 = cls.from_so6(s)
s.close()
return so6
