Function convert

src/path_traits.cpp:119–144

//--------------------------------------------------------------------------------------//

BOOST_FILESYSTEM_DECL
void convert(const char* from, const char* from_end, std::wstring& to, const codecvt_type* cvt)
{
    if (from == from_end)
        return;

    BOOST_ASSERT(from != nullptr);
    BOOST_ASSERT(from_end != nullptr);

    if (!cvt)
        cvt = &fs::path::codecvt();

    std::size_t buf_size = (from_end - from) * 3; // perhaps too large, but that's OK

    //  dynamically allocate a buffer only if source is unusually large
    if (buf_size > default_codecvt_buf_size)
    {
        std::unique_ptr< wchar_t[] > buf(new wchar_t[buf_size]);
        convert_aux(from, from_end, buf.get(), buf.get() + buf_size, to, *cvt);
    }
    else
    {
        wchar_t buf[default_codecvt_buf_size];
        convert_aux(from, from_end, buf, buf + default_codecvt_buf_size, to, *cvt);
    }
}

//--------------------------------------------------------------------------------------//
//                         convert const wchar_t* to string                            //