wmbusmeters/src/units.h

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2.0 KiB
C++

/*
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,KWH) \
X(Power,KW) \
X(Volume,M3) \
X(Flow,M3H) \
X(Temperature,C) \
X(Text,TXT) \
#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") \
X(M3H,m3h,m3/h,Flow,"cubic meters per hour") \
X(C,c,°C,Temperature,"celsius") \
X(TXT,txt,txt,Text,"text") \
enum class Unit
{
#define X(cname,lcname,hrname,quantity,explanation) cname,
LIST_OF_UNITS
#undef X
Unknown
};
enum class Quantity
{
#define X(quantity,default_unit) 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);
Unit defaultUnitForQuantity(Quantity q);
std::string unitToStringHR(Unit u);
std::string unitToStringLowerCase(Unit u);
std::string unitToStringUpperCase(Unit u);
std::string valueToString(double v, Unit u);
Unit replaceWithConversionUnit(Unit u, std::vector<Unit> cs);
#endif