Method decode_utfN

include/pybind11/cast.h:574–590

private:
    static handle decode_utfN(const char *buffer, ssize_t nbytes) {
#if !defined(PYPY_VERSION)
        return UTF_N == 8    ? PyUnicode_DecodeUTF8(buffer, nbytes, nullptr)
               : UTF_N == 16 ? PyUnicode_DecodeUTF16(buffer, nbytes, nullptr, nullptr)
                             : PyUnicode_DecodeUTF32(buffer, nbytes, nullptr, nullptr);
#else
        // PyPy segfaults when on PyUnicode_DecodeUTF16 (and possibly on PyUnicode_DecodeUTF32 as
        // well), so bypass the whole thing by just passing the encoding as a string value, which
        // works properly:
        return PyUnicode_Decode(buffer,
                                nbytes,
                                UTF_N == 8    ? "utf-8"
                                : UTF_N == 16 ? "utf-16"
                                              : "utf-32",
                                nullptr);
#endif
    }

    // When loading into a std::string or char*, accept a bytes/bytearray object as-is (i.e.
    // without any encoding/decoding attempt).  For other C++ char sizes this is a no-op.