Parser JSON ON QT [closed] - c++

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Is it possible to use an operator || in json like this :
{
"ven":{
"source":"logicCtrl" ,
"msg":"radio_volume" || "radio-mute", || "radio3",
"type":"int"
}
}
i can after get data by parsing data in C++ side like this :
QFile jsonFile("VenParser.json");
if (!jsonFile.open(QIODevice::ReadOnly | QIODevice::Text))
{
qDebug() << "problème d'overture du fichier, exit";
}
QByteArray jsonData = jsonFile.readAll();
QJsonParseError *err = new QJsonParseError();
QJsonDocument doc = QJsonDocument::fromJson(jsonData, err);
if (err->error != 0)
qDebug() << err->errorString();
Venparser myparser;
if (doc.isNull())
{
qDebug() << "Document invalide";
}
else if (doc.isObject())
{
//recuperer l'object json
QJsonObject jObject = doc.object();
//convertir l'object json to variantmap
QVariantMap mainMap = jObject.toVariantMap();
// variant map
QVariantMap Map = mainMap["ven"].toMap();
myparser.source = Map["source"].toString();
myparser.msg = Map["msg"].toString();
myparser.type = Map["type"].toString();
header.H file : i define my struct
struct Venparser {
QString source;
QString msg;
QString type;
My problem is that i don't want a list in my "msg" but something like this :
when i call myparser.msg , then it will check just the value i need in msg and return it.
"msg":"radio_volume" || "radio-mute", || "radio3",
Thanks,

Answer 1

Your example with the || token is not a valid JSON. You can read more about its format here. However, if I understand you correctly, you can easily use JSON arrays for your task.
JSON:
{
"ven": {
"source": "logicCtrl",
"msg": ["radio_volume", "radio-mute", "radio3"],
"type": "int"
}
}
C++:
You can access the msg array using the toStringList() method. Also, you can use QVariantList and toList() respectively if you fill your array with data different from strings.
QStringList messages = Map["msg"].toStringList();
Now the messages variable contains "radio_volume", "radio-mute" and "radio3" values so you can extract the required string any way you need using your code.
If you still need to parse your exact example (which is technically not a valid JSON as I said before), you will have to go with writing your own parser, which is a bit wide topic for the answer.