43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
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from CoreBluetooth import CBUUID
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from Foundation import NSData
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from ...uuids import normalize_uuid_str
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def cb_uuid_to_str(uuid: CBUUID) -> str:
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"""Converts a CoreBluetooth UUID to a Python string.
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If ``uuid`` is a 16-bit UUID, it is assumed to be a Bluetooth GATT UUID
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(``0000xxxx-0000-1000-8000-00805f9b34fb``).
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Args
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uuid: The UUID.
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Returns:
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The UUID as a lower case Python string (``xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx``)
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"""
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return normalize_uuid_str(uuid.UUIDString())
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def _is_uuid_16bit_compatible(_uuid: str) -> bool:
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test_uuid = "0000ffff-0000-1000-8000-00805f9b34fb"
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test_int = _convert_uuid_to_int(test_uuid)
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uuid_int = _convert_uuid_to_int(_uuid)
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result_int = uuid_int & test_int
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return uuid_int == result_int
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def _convert_uuid_to_int(_uuid: str) -> int:
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UUID_cb = CBUUID.alloc().initWithString_(_uuid)
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UUID_data = UUID_cb.data()
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UUID_bytes = UUID_data.getBytes_length_(None, len(UUID_data))
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UUID_int = int.from_bytes(UUID_bytes, byteorder="big")
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return UUID_int
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def _convert_int_to_uuid(i: int) -> str:
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UUID_bytes = i.to_bytes(length=16, byteorder="big")
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UUID_data = NSData.alloc().initWithBytes_length_(UUID_bytes, len(UUID_bytes))
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UUID_cb = CBUUID.alloc().initWithData_(UUID_data)
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return UUID_cb.UUIDString().lower()
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