c++


How to specify the text encoding of a file in C++ using std::stringstream [on hold]


I'm in the process of converting a C++ plugin for an old Windows application to work with a newer version. The old version uses 8 bit local codepage strings, but the new version has converted everything to use 16 bit UTF16 strings. I need to make it compile in both environments for quite a transition period.
I have a bunch of #define statements based on "#ifdef UNICODE", so I've got most of it compiling in both environments.
The tricky part is a lot of code is reading and writing existing text files, and I need to not break this. If everything in memory is std::wstring or wchar_t*, but the text files are 7-bit encoded ASCII, what is the proper way to read/write them?
Most of my experience is with the .NET environment, where byte[] and string/char[] are two different things, and you have to use encodings to convert between them, and streams only operate on byte[]. How does the C++ standard library deal with encoding issues like this?

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