Parsing XML file with QXmlStreamReader

[Mery_lamb]

@SGaist but after the counter update I add a reader.skipCurrentElement(). please take a look to this part

if(reader.name() == "FirstChild"){
                    while(reader.readNextStartElement()){
                        if(reader.name() == "test1"){
                            qDebug << "Hello Test1 \n"; 
                           test1_number ++ ; 
                        }
                        else
                            reader.skipCurrentElement();
                    }
                }
                else
                    reader.skipCurrentElement();

[JonB]

@Mery_lamb
Debug out reader.name() at every stage to see where your reader is getting to.

[SGaist]

@Mery_lamb said in Parsing XML file with QXmlStreamReader:

@SGaist but after the counter update I add a reader.skipCurrentElement(). please take a look to this part

if(reader.name() == "FirstChild"){
                    while(reader.readNextStartElement()){
                        if(reader.name() == "test1"){
                            qDebug << "Hello Test1 \n"; 
                           test1_number ++ ; 
                        }
                        else
                            reader.skipCurrentElement();
                    }
                }
                else
                    reader.skipCurrentElement();

No you did not, it's in the else clause.

[Mery_lamb]

This post is deleted!

[Mery_lamb]

@JonB I did and I found that inside the if(reader.name() == "test1"), I get only one element which mean that maaaaybe I forget reader.skipCurrentElement() but I am not sure where to add it

[SGaist]

right after test1_number++.

Or just remove the else of that specific if since you are not doing any other processing of what is inside that element.

[Mery_lamb]

@SGaist
If I remove the else after the counter it will not show "test1 " at all. if I add the reader.skipCurrentElement() after the counter I get the same result

[JonB]

@Mery_lamb
I haven't looked at it/used this XML reader code. But I think you'll find that after you read the <test1 type= "girl"> you still have go down into the <name> asmaa </name>, <age> 14</age> stuff, and then you have to come out again to move onto the <test1 type= "boy"> .

Anyway, I wouldn't know without trying it myself.

[SGaist]

This works as expected:

#include <QCoreApplication>
#include <QFile>
#include <QXmlStreamReader>
#include <QtDebug>

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);

    QFile file("test.xml");
    if(!file.open(QFile::ReadOnly | QFile::Text)){
        qDebug() << "Cannot read file" << file.errorString();
        exit(0);
    }

    QXmlStreamReader reader(&file);

    int test1_number  = 0;
    if (reader.readNextStartElement()) {
        if (reader.name() == "root" ){
            while(reader.readNextStartElement()) {
                qDebug() << "First level start element name" << reader.name();
                if(reader.name() == "FirstChild") {
                    while(reader.readNextStartElement()) {
                        qDebug() << "Second level start element name" << reader.name();
                        if(reader.name() == "test1"){
                            qDebug() << "Hello Test1 \n";
                            test1_number++ ;
                        }

                        reader.skipCurrentElement();
                    }
                } else {
                    reader.skipCurrentElement();
                }
            }
        } else {
            reader.raiseError(QObject::tr("Incorrect file"));
        }
    }

    qDebug() << "Number of 'test1'" << test1_number;

    return 0;
}

[Mery_lamb]

@SGaist thank you for your help I was stuck in this error from last 3 days. it seems like I need to take another look to my Qt notes.