C++ SymbolString::clear方法代码示例

result_t BusHandler::sendAndWait(SymbolString& master, SymbolString& slave)
{
	result_t result = RESULT_ERR_NO_SIGNAL;
	slave.clear();
	ActiveBusRequest request(master, slave);
	logInfo(lf_bus, "send message: %s", master.getDataStr().c_str());

	for (int sendRetries = m_failedSendRetries + 1; sendRetries >= 0; sendRetries--) {
		m_nextRequests.push(&request);
		bool success = m_finishedRequests.remove(&request, true);
		result = success ? request.m_result : RESULT_ERR_TIMEOUT;

		if (result == RESULT_OK) {
			Message* message = m_messages->find(master);
			if (message != NULL)
				m_messages->invalidateCache(message);
			break;
		}
		if (!success || result == RESULT_ERR_NO_SIGNAL || result == RESULT_ERR_SEND || result == RESULT_ERR_DEVICE) {
			logError(lf_bus, "send to %2.2x: %s, give up", master[1], getResultCode(result));
			break;
		}
		logError(lf_bus, "send to %2.2x: %s%s", master[1], getResultCode(result), sendRetries>0 ? ", retry" : "");

		request.m_busLostRetries = 0;
	}

	return result;
}

void BusHandler::receiveCompleted()
{
	unsigned char srcAddress = m_command[0], dstAddress = m_command[1];
	if (srcAddress == dstAddress) {
		logError(lf_bus, "invalid self-addressed message from %2.2x", srcAddress);
		return;
	}
	addSeenAddress(srcAddress);
	addSeenAddress(dstAddress);

	bool master = isMaster(dstAddress);
	if (dstAddress == BROADCAST) {
		logInfo(lf_update, "update BC cmd: %s", m_command.getDataStr().c_str());
		if (m_command.size()>=5+9 && m_command[2]==0x07 && m_command[3]==0x04) {
			unsigned char slaveAddress = (unsigned char)((srcAddress+5)&0xff);
			addSeenAddress(slaveAddress);
			Message* message = m_messages->getScanMessage(slaveAddress);
			if (message && (message->getLastUpdateTime()==0 || message->getLastSlaveData().size()<10)) {
				// e.g. 10fe07040a b5564149303001248901
				m_seenAddresses[slaveAddress] |= SCAN_INIT;
				SymbolString idData;
				istringstream input;
				result_t result = message->prepareMaster(m_ownMasterAddress, idData, input);
				if (result==RESULT_OK) {
					idData.clear();
					idData.push_back(9);
					for (size_t i = 5; i <= 5+9; i++) {
						idData.push_back(m_command[i]);
					}
					result = message->storeLastData(pt_slaveData, idData, 0);
				}
				if (result==RESULT_OK) {
					m_seenAddresses[slaveAddress] |= SCAN_DONE;
				}
				logNotice(lf_update, "store BC ident: %s", getResultCode(result));
			}
		}
	} else if (master) {
		logInfo(lf_update, "update MM cmd: %s", m_command.getDataStr().c_str());
	} else {
		logInfo(lf_update, "update MS cmd: %s / %s", m_command.getDataStr().c_str(), m_response.getDataStr().c_str());
	}
	Message* message = m_messages->find(m_command);
	if (m_grabMessages) {
		unsigned long long key;
		if (message) {
			key = message->getKey();
		} else {
			key = Message::createKey(m_command, 4); // up to 4 DD bytes
		}
		m_grabbedMessages[key].setLastData(m_command, m_response);
	}
	if (message == NULL) {
		if (dstAddress == BROADCAST) {
			logNotice(lf_update, "unknown BC cmd: %s", m_command.getDataStr().c_str());
		} else if (master) {
			logNotice(lf_update, "unknown MM cmd: %s", m_command.getDataStr().c_str());
		} else {
			logNotice(lf_update, "unknown MS cmd: %s / %s", m_command.getDataStr().c_str(), m_response.getDataStr().c_str());
		}
	} else {
		m_messages->invalidateCache(message);
		string circuit = message->getCircuit();
		string name = message->getName();
		result_t result = message->storeLastData(m_command, m_response);
		ostringstream output;
		if (result==RESULT_OK) {
			result = message->decodeLastData(output);
		}
		if (result < RESULT_OK) {
			logError(lf_update, "unable to parse %s %s from %s / %s: %s", circuit.c_str(), name.c_str(), m_command.getDataStr().c_str(), m_response.getDataStr().c_str(), getResultCode(result));
		} else {
			string data = output.str();
			if (m_answer && dstAddress == (master ? m_ownMasterAddress : m_ownSlaveAddress)) {
				logNotice(lf_update, "self-update %s %s QQ=%2.2x: %s", circuit.c_str(), name.c_str(), srcAddress, data.c_str()); // TODO store in database of internal variables
			} else if (message->getDstAddress() == SYN) { // any destination
				if (message->getSrcAddress() == SYN) { // any destination and any source
					logNotice(lf_update, "update %s %s QQ=%2.2x ZZ=%2.2x: %s", circuit.c_str(), name.c_str(), srcAddress, dstAddress, data.c_str());
				} else {
					logNotice(lf_update, "update %s %s ZZ=%2.2x: %s", circuit.c_str(), name.c_str(), dstAddress, data.c_str());
				}
			} else if (message->getSrcAddress() == SYN) { // any source
				logNotice(lf_update, "update %s %s QQ=%2.2x: %s", circuit.c_str(), name.c_str(), srcAddress, data.c_str());
			} else {
				logNotice(lf_update, "update %s %s: %s", circuit.c_str(), name.c_str(), data.c_str());
			}
		}
	}
}