source: cpp/common/Convert.h

// This file is a part of Framsticks SDK.  http://www.framsticks.com/
// Copyright (C) 1999-2020  Maciej Komosinski and Szymon Ulatowski.
// See LICENSE.txt for details.

#ifndef _CONVERT_H_
#define _CONVERT_H_

#include "nonstd.h"
#include "nonstd_math.h"
#include "nonstd_stl.h"
#include <stdint.h>
#include <cmath>

#ifdef LINUX
#define UINT64_FORMAT "%llu" //we want to avoid this and ambiguous "long long", but gcc does not seem to support I64u (yet?)
#else
#define UINT64_FORMAT "%I64u"
#endif

struct Convert
{
public:
        static int toInt(string s);
        static int toInt_HexIf0x(string s);
        static float toFloat(string s);
        static string toLowerCase(string s);
        static string toUpperCase(string s);
        static string toLowerCaseUTF8(string s);
        static string toUpperCaseUTF8(string s);
        static char toLowerCase(char c);
        static char toUpperCase(char c);
        template<class T> static string _toString(const T& value);
        static string toString(unsigned int v);
        static string toString(int v);
        static string toString(short v);
        static string toString(float v);
        static string toString(double v);
        static string zeroPad(string s, int l) { while ((int)s.length() < l) s = string("0") + s; return s; }
        static uint32_t hexToInt(const string& col);

        static double toRadians(double angle) { return angle * M_PI / 180; }
        static double toDegrees(double angle) { return angle / M_PI * 180; }
        static double atan_2(double y, double x) { if (x == 0 && y == 0) return 0; else return atan2(y, x); } //needed by borland 5/6 only?

        static double odleglosc_sq(double x1, double y1, double x2, double y2) //odleglosc do kwadratu, wystarczy do porownywania
        {
                double dx = x2 - x1, dy = y2 - y1;
                return dx * dx + dy * dy;
        }

        static double odleglosc(double x1, double y1, double x2, double y2) { return sqrt(odleglosc_sq(x1, y1, x2, y2)); }

        //static float odleglosc(int x1,int y1,int x2,int y2) {float dx=x1-x2; float dy=y1-y2; return sqrt(dx*dx+dy*dy);}
        //static float odleglosc(float x1,float y1,float x2,float y2) {return sqrt(odleglosc_sq(x1,y1,x2,y2));}
        //static float odleglosc_sq(float x1,float y1,float x2,float y2) {float dx=x1-x2; float dy=y1-y2; return dx*dx+dy*dy;}

        static struct tm localtime(const time_t &timep);//jak ::localtime ale zwraca strukture zamiast wskaznika, ref w parametrze dla wygodnego wywolywania
        static string asctime(const struct tm &tm);//jak ::asctime ale thread safe i bez glupiego \n na koncu, ref w parametrze dla wygodnego wywolywania

        static std::wstring strTOwstr(const char *s)
        {
                string str(s);
                return std::wstring(str.begin(), str.end());
        }

        static string wstrTOstr(const wchar_t *s)
        {
                wstring str(s);
                return string(str.begin(), str.end());
        }

        static string wstrToUtf8(const wchar_t *str);
#ifdef _WIN32
        static wstring utf8ToUtf16(const char *str);
#endif
};

#endif