Int_V.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/>.
 */
 
/*
 * MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * The above copyright notice and this permission notice shall be included in
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#include "iot/mqtt-fast/types/Int_V.h"
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
namespace iot::mqtt_fast::types {
 
    Int_V::Int_V(core::socket::SocketContext* socketContext)
        : iot::mqtt_fast::types::TypeBase(socketContext) {
    }
 
    std::size_t Int_V::construct() {
        std::size_t consumed = 0;
        std::size_t ret = 0;
 
        do {
            char byte = 0;
            ret = read(&byte, 1);
 
            if (ret > 0) {
                value += static_cast<uint32_t>((byte & 0x7F) * multiplier);
                if (multiplier > 0x80 * 0x80 * 0x80) {
                    error = true;
                } else {
                    multiplier *= 0x80;
                    completed = (byte & 0x80) == 0;
                }
                consumed += ret;
            }
        } while (ret > 0 && !completed && !error);
 
        return consumed;
    }
 
    uint32_t Int_V::getValue() const {
        return value;
    }
 
    void Int_V::reset() {
        multiplier = 1;
        value = 0;
 
        iot::mqtt_fast::types::TypeBase::reset();
    }
 
} // namespace iot::mqtt_fast::types