XML, read file, string to enum.....

Hello everybody,
i have an xml file which i read during start-up and write when the programm is quit.
The dataset is read into a qmap during parsing. Two parameters i read through the process are form typ enum.

Code:

---

///*! Enum for xxx names*/
    typedef enum {
        x1 = 0,                   /***/
        x3,                         /***/
        x8,                       /***/
        undefined_xxNames       /***/
    }EnumxxNames;
    QString getEnumxxNames(EnumxxNames element);

---

Code:

---

QString graphicsEnum::getEnumxxNames(EnumxxNames element)
{
    switch(element)
    {
    case x1:
        return QString("x1");
    case x3:
        return QString("x3");
    case  x8:
        return QString("x8");
    default:
        return QString::number(element);
    }
}

---

in xml parser

Code:

---

qDebug()<<readItem(xx,getStringXMLItem(Properties),getStringXMLItemProperties(xxName));

---

Note readItem gives back a Qstring -->
reads out x1, x3,x8

if i want to conert that back to the enum using static cast

Code:

---

qDebug()<<getEnumxxNames(static_cast<EnumxxNames>(readItem(xx,getStringXMLItem(Properties),getStringXMLItemProperties(xxName)));

---

reads out x8

why is that...what is wrong here....
Is there a other way to get this done ?

You cannot cast a string to an integer or enum.
Just like for the conversion in the other direction you'll need a function that understands the enum and its string representation.
Something like

Code:

---

EnumxxNames getEnumValue(const QString &element)
{
    if (element == "x1") return x1;
    if (element == "x3") return x3;
 
    return static_cast<EnumxxNames>(element.toInt()); // actually should check the result of toInt before casting
}

---

Alternatively you can do the string -> value mapping with a map or hash that uses the string representation as the keys and the respective enum value as the values.

Cheers,
_