delphi - Converting a string to Cardinal / UInt32

Question

I need to convert a string to an unsigned 32 bit integer (Cardinal).

In System.SysUtils unit there are many useful functions like:

• StrToInt
• StrToInt64
• StrToUInt64

But I can't find any StrToCardinal, StrToUInt or StrToUInt32 function.

question from:https://stackoverflow.com/questions/65842281/converting-a-string-to-cardinal-uint32

Answer 1

To follow Andreas Rejbrand idea posted as comment, I would suggest this:

function StrToCardinal(const S : String) : Cardinal;
var
    I64 : UInt64;
begin
    I64 := StrToUInt64(S);
    if (I64 shr 32) <> 0 then
        raise EConvertError.Create('StrToCardinal invalid value');
    Result := Cardinal(I64);
end;