#include "subs.h"
#include "utils.h"

namespace tpx {

    static string lowercase(string s) {
        size_t i, n = s.size();
        string lc(s);
        for (i = 0; i < n; i++) lc[i] = tolower(s[i]);
        return lc;
    }

    Substance* GetSubstanceByName(string name) {
        string lcname = lowercase(name);
        if (lcname == "water") 
            return new water;
        else if (lcname == "nitrogen") 
            return new nitrogen;
        else if (lcname == "methane") 
            return new methane;
        else if (lcname == "hydrogen") 
            return new hydrogen;
        else if (lcname == "oxygen") 
            return new oxygen;
        else if (lcname == "hfc134a") 
            return new HFC134a;
        else if (lcname == "rk") 
            return new RedlichKwong;
        else if (lcname == "carbondioxide") 
            return new CarbonDioxide;
        else if (lcname == "heptane") 
            return new Heptane;
        else
            return 0;
    }

    Substance * GetSub(int isub) {
        if (isub == 0)
            return new water;
     else if (isub == 1)
            return new nitrogen;
     else if (isub == 2)
            return new methane;
     else if (isub == 3)
            return new hydrogen;
     else if (isub == 4)
            return new oxygen;
    else if (isub == 5)
            return new HFC134a;
    else if (isub == 6)
            return new RedlichKwong;
    else if (isub == 7)
            return new CarbonDioxide;
    else if (isub == 8)
            return new Heptane;
      else
            return 0;
    }

}