Grouping items in QTreeView using a separator

Jansi

I am loading a list of strings into QTreeView and I want to group them into virtual folders like so:

text
 |_ english
       |_ game
            |_ pro_scen.msg
            |_ pro_quests.msg
            |_ ...

However, the code below results in all of the nested items being placed into the "example" folder instead of "text". Can you spot what I am doing wrong?

QStandardItemModel *model = new QStandardItemModel();

QVector<QString> entries({
    {"text/english/game/pro_scen.msg"},
    {"text/english/game/pro_wall.msg"},
    {"text/english/game/proto.msg"},
    {"text/english/game/quests.msg"},
    {"example/english/game/pro_scen.msg"},
    {"script.int"}
});

model->setColumnCount(1);

for(auto &entry : entries)
{
    QStringList fileParts = entry.split("/");

    QStandardItem *root;
    QStandardItem *child;

    for(int i = 0; i < fileParts.size(); i++)
    {
        child = new QStandardItem(fileParts[i]);

        // FIXME: this will exclude items with the same name that are in different directories
        QList<QStandardItem*> exists = model->findItems(fileParts[i], Qt::MatchExactly | Qt::MatchRecursive);

        if(exists.empty())
        {
            // item does not exist
            if(i == 0)
            {
                // root item
                root = child;
                model->appendRow(root);
            } else {
                // child of some other item
                root->appendRow(child);
                root = child;
            }
        }
        else
        {
            // item is already there
            root = exists[0];
        }
    }
}

ui->treeView->setModel(model);

VRonin

void appendPath(QAbstractItemModel* const model, QStringList& fileParts, const QModelIndex& parent = QModelIndex()){
	Q_ASSERT(model);
	if(fileParts.isEmpty()) 
		return;
	if(model->columnCount(parent)<=0)
		model->insertColumn(0,parent);
	QModelIndex currIdx;
	const QString currLevel = fileParts.takeFirst();
	const int rowCount = model->rowCount(parent);
	for(int i=0;i<rowCount;++i){
		if(model->index(i,0,parent).data().toString().compare(currLevel)==0){
			currIdx = model->index(i,0,parent);
			break;
		}
	}
	if(!currIdx.isValid()){
		model->insertRow(rowCount,parent);
		currIdx=model->index(rowCount,0,parent);
		model->setData(currIdx,currLevel);
	}
	appendPath(model,fileParts,currIdx);
}

then you can use it:

QStandardItemModel *model = new QStandardItemModel(this); //give a parent or you'll leak

QVector<QString> entries({
    {"text/english/game/pro_scen.msg"},
    {"text/english/game/pro_wall.msg"},
    {"text/english/game/proto.msg"},
    {"text/english/game/quests.msg"},
    {"example/english/game/pro_scen.msg"},
    {"script.int"}
});
for(const QString& entry : entries)
{
    QStringList fileParts = entry.split("/");
    appendPath(model,fileParts);
}
ui->treeView->setModel(model);

Jansi

Perfect. Thank you.