wmbusmeters/src/units.h

/*
 Copyright (C) 2019 Fredrik Öhrström

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef UNITS_H
#define UNITS_H

#include<string>
#include<vector>

#define LIST_OF_QUANTITIES \
    X(Energy)  \
    X(Power)   \
    X(Volume)  \


#define LIST_OF_UNITS \
    X(KWH,kwh,kWh,Energy,"kilo Watt hour")  \
    X(GJ,gj,GJ,Energy,"Giga Joule")         \
    X(M3,m3,m3,Volume,"cubic meter")        \
    X(L,l,l,Volume,"litre")                 \
    X(KW,kw,kW,Power,"kilo Watt")           \

enum class Unit
{
#define X(cname,lcname,hrname,quantity,explanation) cname,
LIST_OF_UNITS
#undef X
    Unknown
};

enum class Quantity
{
#define X(quantity) quantity,
LIST_OF_QUANTITIES
#undef X
    Unknown
};

bool canConvert(Unit from, Unit to);
double convert(double v, Unit from, Unit to);
Unit toUnit(std::string s);
bool isQuantity(Unit u, Quantity q);
void assertQuantity(Unit u, Quantity q);

std::string strWithUnitHR(double v, Unit u);
std::string strWithUnitLowerCase(double v, Unit u);

#endif