RASCSI/cpp/shared/protobuf_util.h

//---------------------------------------------------------------------------
//
// SCSI Target Emulator PiSCSI
// for Raspberry Pi
//
// Copyright (C) 2021-2023 Uwe Seimet
//
// Helper methods for setting up/evaluating protobuf messages
//
//---------------------------------------------------------------------------

#pragma once

#include <string>
#include <span>
#include <vector>
#include "generated/piscsi_interface.pb.h"

using namespace std;
using namespace piscsi_interface;

namespace protobuf_util
{
	static const char KEY_VALUE_SEPARATOR = '=';

	string GetParam(const auto& item, const string& key)
	{
		const auto& it = item.params().find(key);
		return it != item.params().end() ? it->second : "";
	}

	void SetParam(auto& item, const string& key, string_view value)
	{
		if (!key.empty() && !value.empty()) {
			auto& map = *item.mutable_params();
			map[key] = value;
		}
	}

	void ParseParameters(PbDeviceDefinition&, const string&);
	void SetCommandParams(PbCommand&, const string&);
	void SetProductData(PbDeviceDefinition&, const string&);
	string SetIdAndLun(PbDeviceDefinition&, const string&);
	string ListDevices(const vector<PbDevice>&);

	void SerializeMessage(int, const google::protobuf::Message&);
	void DeserializeMessage(int, google::protobuf::Message&);
	size_t ReadBytes(int, span<byte>);
}