Method readStickerSets

Telegram/SourceFiles/storage/storage_account.cpp:2043–2313

}

void Account::readStickerSets(
		FileKey &stickersKey,
		Data::StickersSetsOrder *outOrder,
		Data::StickersSetFlags readingFlags) {
	using SetFlag = Data::StickersSetFlag;

	if (!stickersKey) {
		return;
	}

	FileReadDescriptor stickers;
	if (!ReadEncryptedFile(stickers, stickersKey, _basePath, _localKey)) {
		ClearKey(stickersKey, _basePath);
		stickersKey = 0;
		writeMapDelayed();
		return;
	}

	const auto failed = [&] {
		ClearKey(stickersKey, _basePath);
		stickersKey = 0;
	};

	auto &sets = _owner->session().data().stickers().setsRef();
	if (outOrder) outOrder->clear();

	quint32 versionTag = 0;
	qint32 version = 0;
	stickers.stream >> versionTag >> version;
	if (versionTag != kStickersVersionTag || version < 2) {
		// Old data, without sticker set thumbnails.
		return failed();
	}
	qint32 count = 0;
	stickers.stream >> count;
	if (!CheckStreamStatus(stickers.stream)
		|| (count < 0)
		|| (count > kMaxSavedStickerSetsCount)) {
		return failed();
	}
	for (auto i = 0; i != count; ++i) {
		quint64 setId = 0, setAccessHash = 0, setHash = 0;
		quint64 setThumbnailDocumentId = 0;
		QString setTitle, setShortName;
		qint32 scnt = 0;
		qint32 setInstallDate = 0;
		Data::StickersSetFlags setFlags = 0;
		qint32 setFlagsValue = 0;
		qint32 setThumbnailType = qint32(StickerType::Webp);
		ImageLocation setThumbnail;

		stickers.stream
			>> setId
			>> setAccessHash
			>> setHash
			>> setTitle
			>> setShortName
			>> scnt