Function utf16ToUtf8

valdi_core/src/valdi_core/cpp/Text/UTF16Utils.cpp:162–172

        i += res.offset;
        return res.pt;
    }
}

static inline void utf16Encode(char32_t pt, std::vector<char16_t>& out) {
    if (pt < 0x10000) {
        out.push_back(static_cast<char16_t>(pt));
    } else if (pt < 0x110000) {
        out.push_back(static_cast<char16_t>(((pt - 0x10000) >> 10) + 0xD800));
        out.push_back(static_cast<char16_t>((pt & 0x3FF) + 0xDC00));
    } else {
        out.push_back(0xFFFD);
    }
}