How to convert a wrong date

Standard str2date function tries to fix a wrong date. For example, if we got as a parameter fantastic June 31th, it returns us June 30, which can be a bad result for your business case.

There are at least two possible solutions for that.

First, by converting the result back to a string and comparing it with the initial string.

private container cgiValidateDate(str _dateStr)
{
    date                retDate     = str2Date(_dateStr, #cgiDateFormat);
    boolean             isOK        = true;
    str                 madeDateStr = date2StrUsr(retDate, DateFlags::FormatAll);

    if(retDate == dateNull() || _dateStr != madeDateStr)
    {
        error(strFmt("Date %1 is incorrect", _dateStr));
        isOK = false;
    }

    return [isOK, retDate];
}

Second, by using .Net function tryParse.

private container cgiValidateDate(str _dateStr)
{
    date                retDate;
    utcDateTime         retDateTime;
    boolean             isOK        = true;
    
    if(!System.DateTime::TryParse(_dateStr, byref retDateTime))
    {
        error(strFmt("Date %1 is incorrect", _dateStr));
        isOK = false;
    }
    else
    {
        retDate = DateTimeUtil::date(retDateTime);
    }
    return [isOK, retDate];
}

Happy date converting!