loop-uh
d5a4715771
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34 lines
1 KiB
Python
34 lines
1 KiB
Python
from __future__ import annotations
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from PyQt6.QtGui import QImage
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from .subscription_http import SubscriptionFetchError, resolve_subscription_source
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class QrDecodeError(ValueError):
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pass
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def decode_subscription_qr(image: QImage) -> str:
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if image.isNull():
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raise QrDecodeError("Изображение пустое")
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try:
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import zxingcpp
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except ImportError as exc:
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raise QrDecodeError("Модуль zxing-cpp не установлен") from exc
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result = zxingcpp.read_barcode(
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image,
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formats=zxingcpp.BarcodeFormat.QRCode,
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try_rotate=True,
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try_invert=True,
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)
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if result is None or not str(result.text or "").strip():
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raise QrDecodeError("QR-код не найден")
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text = str(result.text).strip()
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try:
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resolve_subscription_source(text)
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except SubscriptionFetchError as exc:
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raise QrDecodeError(
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"QR-код не содержит URL подписки или открытую add/import-ссылку"
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) from exc
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return text
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