mirror of
https://github.com/badaix/snapcast.git
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83 lines
1.9 KiB
C++
83 lines
1.9 KiB
C++
/***
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This file is part of snapcast
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Copyright (C) 2014-2025 Johannes Pohl
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#pragma once
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// local headers
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#include "common/json.hpp"
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#include "message.hpp"
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using json = nlohmann::json;
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namespace msg
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{
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/// Base class of a message with json payload
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class JsonMessage : public BaseMessage
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{
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public:
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/// c'tor taking the @p msg_type
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explicit JsonMessage(message_type msg_type) : BaseMessage(msg_type)
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{
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}
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/// d'tor
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~JsonMessage() override = default;
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void read(std::istream& stream) override
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{
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std::string s;
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readVal(stream, s);
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msg = json::parse(s);
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}
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uint32_t getSize() const override
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{
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return static_cast<uint32_t>(sizeof(uint32_t) + msg.dump().size());
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}
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json msg;
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protected:
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void doserialize(std::ostream& stream) const override
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{
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writeVal(stream, msg.dump());
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}
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/// @return value for key @p what or @p def, if not found
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template <typename T>
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T get(const std::string& what, const T& def) const
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{
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try
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{
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if (!msg.count(what))
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return def;
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return msg[what].get<T>();
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}
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catch (...)
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{
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return def;
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}
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}
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};
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} // namespace msg
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