private static int readVLI(RandomAccessFile din) throws IOException{
        boolean isNegative = false;
        int b = 0;
        int offset = 6;
        int result;

        b = din.read();

        if((b & 0b01000000) != 0) isNegative = true;
        result = (b & 0b00111111);

        while((b & 0b10000000) != 0){
            b = (din.read() & 0b01111111);
            b = b << offset;
            result += b;
            offset += 7;
        }

        if(isNegative) result *= -1;

        return result;

    }