Simple struct to convert hexa to rgba color

    static struct _hex
    {
        unsigned int r;
        unsigned int g;
        unsigned int b;
        unsigned int a;

        _hex() {};

        _hex(const char* ch)
        {
            parse(ch);
        };

        unsigned int getHex(char _ch)
        {
            unsigned int v = 0;
            switch(_ch)
            {
                case '0': v=0; break;
                case '1': v=1; break;
                case '2': v=2; break;
                case '3': v=3; break;
                case '4': v=4; break;
                case '5': v=5; break;
                case '6': v=6; break;
                case '7': v=7; break;
                case '8': v=8; break;
                case '9': v=9; break;
                case 'a': case 'A': v=10; break;
                case 'b': case 'B': v=11; break;
                case 'c': case 'C': v=12; break;
                case 'd': case 'D': v=13; break;
                case 'e': case 'E': v=14; break;
                case 'f': case 'F': v=15; break;
            }
            return v;
        };

        void parse (const char* _chb)
        {
            char* _ch = (char*) _chb;
            bool simple = false;
            if (*_ch=='#') _ch++;
            int len = strlen(_ch);
            if (len<5) simple = true;
            unsigned int v = 0;
            v = getHex( *_ch++ );
            if (simple) v = v | v*16; else v = v*16 | getHex(*_ch++);
            r = v;
            v = getHex( *_ch++ );
            if (simple) v = v | v*16; else v = v*16 | getHex(*_ch++);
            g = v;
            v = getHex( *_ch++ );
            if (simple) v = v | v*16; else v = v*16 | getHex(*_ch++);
            b = v;
            v = getHex( *_ch++ );
            if (simple) v = v | v*16; else v = v*16 | getHex(*_ch++);
            a = v;
            if (len<8 || simple)
                if (len<4)
                    a = 255;
        };

    } hex( htmlCor.c_str() );