How do I convert jstring to wchar_t *

Question

Let\'s say that on the C++ side my function takes a variable of type jstring named myString. I can convert it to an ANSI string as follows:

Answer 1

A portable and robust solution is to use iconv, with the understanding that you have to know what encoding your system wchar_t uses (UTF-16 on Windows, UTF-32 on many Unix systems, for example).

If you want to minimise your dependency on third-party code, you can also hand-roll your own UTF-8 converter. This is easy if converting to UTF-32, somewhat harder with UTF-16 because you have to handle surrogate pairs too. :-P Also, you must be careful to reject non-shortest forms, or it can open up security bugs in some cases.