Subscribe.cpp

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/*
 * SNode.C - a slim toolkit for network communication
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2020, 2021, 2022, 2023, 2024, 2025
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "iot/mqtt-fast/packets/Subscribe.h"
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include <string>
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
namespace iot::mqtt_fast::packets {
 
    Subscribe::Subscribe(uint16_t packetIdentifier, const std::list<Topic>& topics)
        : iot::mqtt_fast::ControlPacket(MQTT_SUBSCRIBE, 0x02)
        , packetIdentifier(packetIdentifier)
        , topics(topics) {
        // V-Header
        putInt16(this->packetIdentifier);
 
        // Payload
        for (const iot::mqtt_fast::Topic& topic : this->topics) {
            putString(topic.getName());
            putInt8(topic.getRequestedQoS());
        }
    }
 
    Subscribe::Subscribe(iot::mqtt_fast::ControlPacketFactory& controlPacketFactory)
        : iot::mqtt_fast::ControlPacket(controlPacketFactory) {
        // V-Header
        packetIdentifier = getInt16();
 
        // Payload
        for (std::string name = getString(); !name.empty(); name = getString()) {
            const uint8_t requestedQoS = getInt8();
            topics.emplace_back(name, requestedQoS);
        }
 
        if (!isError()) {
            error = topics.empty();
        }
    }
 
    uint16_t Subscribe::getPacketIdentifier() const {
        return packetIdentifier;
    }
 
    const std::list<iot::mqtt_fast::Topic>& Subscribe::getTopics() const {
        return topics;
    }
 
} // namespace iot::mqtt_fast::packets