Method WideToUtf8

src/platform/linux/platform_linux.cpp:24–35

WideToUtf8 - proper UTF-32 to UTF-8 conversion for Linux (wchar_t is 32-bit)

    
    // WideToUtf8 - proper UTF-32 to UTF-8 conversion for Linux (wchar_t is 32-bit)
    std::string WideToUtf8(const wchar_t* w) override {
        if (!w || !*w) return {};
        std::string result;
        for (; *w; ++w) {
            uint32_t cp = static_cast<uint32_t>(*w);
            if (cp < 0x80) { result += (char)cp; }
            else if (cp < 0x800) { result += (char)(0xC0|(cp>>6)); result += (char)(0x80|(cp&0x3F)); }
            else if (cp < 0x10000) { result += (char)(0xE0|(cp>>12)); result += (char)(0x80|((cp>>6)&0x3F)); result += (char)(0x80|(cp&0x3F)); }
            else if (cp < 0x110000) { result += (char)(0xF0|(cp>>18)); result += (char)(0x80|((cp>>12)&0x3F)); result += (char)(0x80|((cp>>6)&0x3F)); result += (char)(0x80|(cp&0x3F)); }
        }
        return result;
    }
    
    std::string WideToUtf8(const wchar_t* w, size_t len) override {
        if (!w || len == 0) return {};