Tried to build an Abstraction around files is only a pattern not more.

FileAbstraction.cpp

#ifdef __CHAR_UNSIGNED__
using UChar = unsigned char;
#else
using UChar = char;
#endif

using i64  = long long;


i64 CStrLenghtOf(UChar* text)
{
 i64 i = 0;
 while(*text){ text += 1; i += 1; }
 return i;
}

struct UStr
{
    UChar* text;
    i64 bytelenght;

    UStr(const char* txt) 
    : text((UChar*)txt),
      bytelenght(CStrLenghtOf((UChar*)txt)) {};
    
    UStr(UChar* text,i64 withLenght) 
    : text((UChar*) text),
      bytelenght(withLenght) {};

    UStr() 
    : text( (UChar*)""),
      bytelenght(1) {};
};

bool reverseFind(UChar charackter,UStr& inUstr)
{
    i64 len = inUstr.bytelenght;
    UChar* stringEnd = inUstr.text + inUstr.bytelenght;
    while(*stringEnd != charackter)
    {
        stringEnd -= 1;
        len -= 1;
        if(len == 0) return false;
    }
    return true;
}

bool reverseFind(UChar charackter,UChar beforeThisCharackter,UStr& inUstr)
{
    i64 len = inUstr.bytelenght;
    UChar* stringEnd = inUstr.text + inUstr.bytelenght;
    while(*stringEnd != charackter && *stringEnd != beforeThisCharackter)
    {
        stringEnd -= 1;
        len -= 1;
        if(len == 0) return false;
    }
    return true;
}

struct Path 
{
    UStr filePath;
    bool valid;

    Path(UStr ustr)
    {
        filePath = ustr;
    }
};

class File
{
private:
    int handle;
public:
    void open(UStr Path)
    {
      if(*(Path.text+Path.bytelenght) != '/')
      {
        if(reverseFind('.','/',Path))
        {
          handle = 3;
        }
      }
    };

    void close()
    {
      handle = 0;
    };
};


int main()
{
  File f = {};
  f.open("/test/version/hallo.txt");

  f.close();
}

So much stuff wich i wouldn't use anymore.