typedef struct {
    uint32 str_len;

    if ( str_len > 0 )
        char str[str_len];
}hstring <read=hstringRead>;

string hstringRead (hstring &str) {
    string s;
    if ( str.str_len > 0 )
        SPrintf( s, "%s", str.str );
    else
        return "empty";
    return s;
}