Help parsing json based chromium bookmarks files

[jiveaxe]

Hi, I'm trying to retrieve bookmarks from chrome/chromium; these are stored in a plain text file using json format. Have made some experiments with qjson but the best I got is the first level bookmarks.

Here a sample file: http://paste.kde.org/2933/

This is my (very ugly) code:

QJson::Parser parser;
bool ok;
 
QVariantMap result = parser.parse(&file, &ok).toMap();
if (!ok) {
    ui->plainTextEdit->appendPlainText("An error occurred during parsing");
    return;
}
 
QVariantMap rootsMap = result["roots"].toMap();
QMapIterator<QString, QVariant> i(rootsMap);
 
while (i.hasNext()) {
    i.next();
    QVariantMap bookmarkbarMap = rootsMap[i.key()].toMap();
    QVariantList childrenMap = bookmarkbarMap["children"].toList();
 
    for(int i = 0; i < childrenMap.size(); i++) {
        QVariantMap nestedMap = childrenMap.at(i).toMap();
        if(nestedMap["type"].toString()=="url") {
            qDebug() << nestedMap["name"].toString();
            qDebug() << nestedMap["url"].toString();
            qDebug() << "\n";
        }
    }
}

QJson::Parser parser;
bool ok;

QVariantMap result = parser.parse(&file, &ok).toMap();
if (!ok) {
    ui->plainTextEdit->appendPlainText("An error occurred during parsing");
    return;
}

QVariantMap rootsMap = result["roots"].toMap();
QMapIterator<QString, QVariant> i(rootsMap);

while (i.hasNext()) {
    i.next();
    QVariantMap bookmarkbarMap = rootsMap[i.key()].toMap();
    QVariantList childrenMap = bookmarkbarMap["children"].toList();

    for(int i = 0; i < childrenMap.size(); i++) {
        QVariantMap nestedMap = childrenMap.at(i).toMap();
        if(nestedMap["type"].toString()=="url") {
            qDebug() << nestedMap["name"].toString();
            qDebug() << nestedMap["url"].toString();
            qDebug() << "\n";
        }
    }
}

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Have tryed to use only QT as explained here (QScriptEngine/QScriptValue) but the examples there are too simple.

Thanks

[marcvanriet]

Hi,
So does the code above work as expected ? And what have you tried to get the sublevel bookmarks ?

If you include <QDebug> you can do something like this :

qDebug() << nestedMap ;

qDebug() << nestedMap ;

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This will make more clear what kind of data is stored in the variants produced by QJson.

Best regards,
Marc

[jiveaxe]

Solved. If interested, below the code:

void Dialog::on_pushButton_clicked()
{
    QFile file(QDir::homePath() + "/.config/chromium/Default/Bookmarks");
    if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
        return;
 
    QJson::Parser parser;
    bool ok;
 
    QVariantMap result = parser.parse(&file, &ok).toMap();
    file.close();
    if (!ok) {
        ui->plainTextEdit->appendPlainText("An error occurred during parsing");
        return;
    }
 
    QVariantMap rootsMap = result["roots"].toMap();
    QMapIterator<QString, QVariant> i(rootsMap);
 
    while (i.hasNext()) {
        i.next();
        QVariantMap map = rootsMap[i.key()].toMap();
        getChildren(map);
    }
}
 
void Dialog::getChildren(const QVariantMap & map) {
    QVariantList childrenMap = map["children"].toList();
 
    for(int i = 0; i < childrenMap.size(); i++) {
        QVariantMap nestedMap = childrenMap.at(i).toMap();
        if(nestedMap["type"].toString()=="url") {
            m_name = nestedMap["name"].toString();
            m_url = nestedMap["url"].toString();
            // do something...
        }
 
        if(nestedMap.contains("children"))
            getChildren(nestedMap);
    }
}

void Dialog::on_pushButton_clicked()
{
    QFile file(QDir::homePath() + "/.config/chromium/Default/Bookmarks");
    if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
        return;

    QJson::Parser parser;
    bool ok;

    QVariantMap result = parser.parse(&file, &ok).toMap();
    file.close();
    if (!ok) {
        ui->plainTextEdit->appendPlainText("An error occurred during parsing");
        return;
    }

    QVariantMap rootsMap = result["roots"].toMap();
    QMapIterator<QString, QVariant> i(rootsMap);

    while (i.hasNext()) {
        i.next();
        QVariantMap map = rootsMap[i.key()].toMap();
        getChildren(map);
    }
}

void Dialog::getChildren(const QVariantMap & map) {
    QVariantList childrenMap = map["children"].toList();

    for(int i = 0; i < childrenMap.size(); i++) {
        QVariantMap nestedMap = childrenMap.at(i).toMap();
        if(nestedMap["type"].toString()=="url") {
            m_name = nestedMap["name"].toString();
            m_url = nestedMap["url"].toString();
            // do something...
        }

        if(nestedMap.contains("children"))
            getChildren(nestedMap);
    }
}

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