Getting Data from XML File and placing them in lineEdits

[zellwwf]

Ok, heres my code

<Item_stats>
	<General_Details>
		<Price>300</Price>
		<Name>Bottle of Wisdom</Name>
		<Description> blahblahblah blahblah</Description>
	</General_Details>
 
	<Auras>
		<HPreg>3.6</HPreg>
		<Manareg>3.6</Manareg>		
	</Auras>
</Item_stats>

<Item_stats>
	<General_Details>
		<Price>300</Price>
		<Name>Bottle of Wisdom</Name>
		<Description> blahblahblah blahblah</Description>
	</General_Details>

	<Auras>
		<HPreg>3.6</HPreg>
		<Manareg>3.6</Manareg>		
	</Auras>
</Item_stats>

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that is my basic xml file, i tried using #include QXml and using QdomDocument ... didnt reach a thing.. although i managed to have the file in 'open' state, figured that out using if statement with a file.isOpen...

Ok, what i want to do with the data is to place them into little Labels/Line edits. for example, i want this to be visible in the gui:

Item Name: (text here)
Price: 300...
if you can give me an example on one i would manage the rest.

Thanks in advance... XD

[wysota]

didnt reach a thing..

Could you translate it to English, please? Or at least something more verbose, we've run out of crystal balls.

[ChrisW67]

QXmlSimpleReader or QXmlStreamReader would be good places to start.

[marcvanriet]

Hi,

Use QXmlStreamReader. Just some code snippets to get you going :

QFile your_text_file = open the text file first
QXmlStreamReader stream( your_text_file );
pXml = &stream;
 
    while( !pXML->atEnd() )
    {
        pXML->readNext();
 
        if( pXML->isStartElement() )        
        {
             if( pXML->name()=="Item_stats")    // found start of my data  
            {
                while( !pXML->atEnd()  )
                {
                    pXML->readNext();
 
                    if( pXML->isEndElement() )
                    {
                         if( pXML->name() == "Item_stats" )  
                             break;                       // end of my data
                    }
                    else if( pXML->isStartElement() )   // entry like 'Auras'
                    {
                        // do something with pXML->name()
                        // and with pXML->readElementText()
                        // and maybe pXML->attributes().value( "yourattribute")                    
                    }
                } 
            }
        } 
    }

QFile your_text_file = open the text file first
QXmlStreamReader stream( your_text_file );
pXml = &stream;

    while( !pXML->atEnd() )
    {
        pXML->readNext();

        if( pXML->isStartElement() )        
        {
             if( pXML->name()=="Item_stats")    // found start of my data  
            {
                while( !pXML->atEnd()  )
                {
                    pXML->readNext();

                    if( pXML->isEndElement() )
                    {
                         if( pXML->name() == "Item_stats" )  
                             break;                       // end of my data
                    }
                    else if( pXML->isStartElement() )   // entry like 'Auras'
                    {
                        // do something with pXML->name()
                        // and with pXML->readElementText()
                        // and maybe pXML->attributes().value( "yourattribute")                    
                    }
                } 
            }
        } 
    }

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[zellwwf]

Hi,

Use QXmlStreamReader. Just some code snippets to get you going :

QFile your_text_file = open the text file first
QXmlStreamReader stream( your_text_file );
pXml = &stream;
 
    while( !pXML->atEnd() )
    {
        pXML->readNext();
 
        if( pXML->isStartElement() )        
        {
             if( pXML->name()=="Item_stats")    // found start of my data  
            {
                while( !pXML->atEnd()  )
                {
                    pXML->readNext();
 
                    if( pXML->isEndElement() )
                    {
                         if( pXML->name() == "Item_stats" )  
                             break;                       // end of my data
                    }
                    else if( pXML->isStartElement() )   // entry like 'Auras'
                    {
                        // do something with pXML->name()
                        // and with pXML->readElementText()
                        // and maybe pXML->attributes().value( "yourattribute")                    
                    }
                } 
            }
        } 
    }

QFile your_text_file = open the text file first
QXmlStreamReader stream( your_text_file );
pXml = &stream;

    while( !pXML->atEnd() )
    {
        pXML->readNext();

        if( pXML->isStartElement() )        
        {
             if( pXML->name()=="Item_stats")    // found start of my data  
            {
                while( !pXML->atEnd()  )
                {
                    pXML->readNext();

                    if( pXML->isEndElement() )
                    {
                         if( pXML->name() == "Item_stats" )  
                             break;                       // end of my data
                    }
                    else if( pXML->isStartElement() )   // entry like 'Auras'
                    {
                        // do something with pXML->name()
                        // and with pXML->readElementText()
                        // and maybe pXML->attributes().value( "yourattribute")                    
                    }
                } 
            }
        } 
    }

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Thank you... thank you ... i will post my results with this tomorrow morning.. i am extremely sleepy, i have been up all day working on this project (not only this part)... With extreme thanks

upon reading the quote, why do we need a text file? and are we just placing the data from the xml to the text file then reading it?
thanks

upon reading the quote, why do we need a text file? and are we just placing the data from the xml to the text file then reading it?
thanks

[ChrisW67]

If you have the XML data in a file (free standing or in a resource) then that file is the text file. If you already have the XML data in-memory, i.e. in a QByteArray, then you can use QBuffer in place of QFile as the QIODevice for the stream reader.

[zellwwf]

thank you again... if i run into trouble again i will inform you

[zellwwf]

I have a little error that i ran into, pXml, what kind of variable is it
i get this error "pXml was not declared in this scope"
The Code is in a header just because i don't like messing around with my main cpp, i try to always to put stuff into headers... i know the code isn't complete, but i wanted to test somethings first

//
//#INCLUDES
#ifndef XMLSTUFF_H
#define XMLSTUFF_H
#include <qstring>
#include <QXmlStreamReader>
#include <Qfile>
#include <QMessageBox> //for debugging purposes
//END INCLUDES
 
static void readXml() {
    QMessageBox mbx;
    QFile myFile("/xml/champs/ashe_prototype.xml"); //this is the path in my resources
    myFile.open(QFile::ReadOnly);
    if (myFile.isOpen()) {
 
        //MESSAGE BOXES
        mbx.setText(" It is Open");
        mbx.exec();
 
        //STREAMERS XML
        QXmlStreamReader stream( &myFile );
 
        pXml = &stream;
 
        //WHILE LOOPS
        while (!pXml->atEnd()){
            pXml->readNext();
            mbx.setText=pXml.name();
            mbx.exec();
 
        }
 
 
    } else {
        mbx.setText(" !It is Open");
        mbx.exec();
    }
}
 
 
 
#endif // XMLSTUFF_H

//
//#INCLUDES
#ifndef XMLSTUFF_H
#define XMLSTUFF_H
#include <qstring>
#include <QXmlStreamReader>
#include <Qfile>
#include <QMessageBox> //for debugging purposes
//END INCLUDES

static void readXml() {
    QMessageBox mbx;
    QFile myFile("/xml/champs/ashe_prototype.xml"); //this is the path in my resources
    myFile.open(QFile::ReadOnly);
    if (myFile.isOpen()) {

        //MESSAGE BOXES
        mbx.setText(" It is Open");
        mbx.exec();

        //STREAMERS XML
        QXmlStreamReader stream( &myFile );
        
        pXml = &stream;

        //WHILE LOOPS
        while (!pXml->atEnd()){
            pXml->readNext();
            mbx.setText=pXml.name();
            mbx.exec();

        }


    } else {
        mbx.setText(" !It is Open");
        mbx.exec();
    }
}



#endif // XMLSTUFF_H

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[zellwwf]

sorry to bother you again, but why am i getting pXML is not declared in this scope

[stampede]

Looks like it should be QXmlStreamReader *, but I have no clue what for (you can just use stream).

QFile myFile("/xml/champs/ashe_prototype.xml"); //this is the path in my resources

QFile myFile("/xml/champs/ashe_prototype.xml"); //this is the path in my resources

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If you are trying to access resource file, then it should be more like

QFile myFile(":/xml/champs/ashe_prototype.xml"); // with :/ at the beggining

QFile myFile(":/xml/champs/ashe_prototype.xml"); // with :/ at the beggining

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[zellwwf]

Ok... sweet, i managed to read what i want from the xml.. now, the problem is assigning the data obtain to QObjects/Widgets

#include "lolapp.h"
#include "ui_lolapp.h"
#include "xmlstuff.h"
#include <QtXml>
 
//General Variables ***********************************************************************************
static void readXml();
bool inDetails,inSkills,inPassive,inQ,inW,inE,inR,inHealth,inMana,inEnergy,inPhys,inMag,inDef,inExtra;
//******************************************************************************************************
 
LOLApp::LOLApp(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LOLApp)
{
    ui->setupUi(this);
 
    //initialize booleans for xml reading//
    inDetails=inSkills=inPassive=inQ=inW=inE=inR=inHealth=inMana=inEnergy=inPhys=inMag=inDef=inExtra=false;
    //***********************************
 
    readXml();
}
 
LOLApp::~LOLApp()
{
    delete ui;
}
//FUNCTION DECLARATION
static void readXml() {
    QMessageBox mbx;
    QFile myFile(":/xml/champs/ashe_prototype.xml");
    QXmlStreamReader stream( &myFile );
    myFile.open(QFile::ReadOnly);
 
    if (myFile.isOpen()) {
        //MESSAGE BOXES**********************************************
        mbx.setText(" It is Open XD");
        mbx.setStandardButtons(QMessageBox::Abort | QMessageBox::Ok);
        mbx.exec();
        //WHILE LOOPS***********************************************
        while (!stream.atEnd()){
            stream.readNext();
            if (stream.isStartElement()) {
                if (stream.name()=="Details") {
                    if (stream.name()=="Name"){
                        //should add a code to add it to the costume label Champ_Name_Label.
                        //now here, i am supposed to link the name "Akali" to Champ_Name_Label 
                        //which is located in the form (ui) of this cpp... eg; this is called lolapp.ui
                        //i tried LOLApp-> LOLApp:: LOLApp. nothing seems to work, i tried it alot... 
                        //i just need to know how to put akali, string, into Champ_Name_Label. thanks
 
                    }
                }
            }
        }
 
 
    } else {
        mbx.setText(" It is NOT Open");
        mbx.exec();
    }
}

#include "lolapp.h"
#include "ui_lolapp.h"
#include "xmlstuff.h"
#include <QtXml>

//General Variables ***********************************************************************************
static void readXml();
bool inDetails,inSkills,inPassive,inQ,inW,inE,inR,inHealth,inMana,inEnergy,inPhys,inMag,inDef,inExtra;
//******************************************************************************************************

LOLApp::LOLApp(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LOLApp)
{
    ui->setupUi(this);

    //initialize booleans for xml reading//
    inDetails=inSkills=inPassive=inQ=inW=inE=inR=inHealth=inMana=inEnergy=inPhys=inMag=inDef=inExtra=false;
    //***********************************

    readXml();
}

LOLApp::~LOLApp()
{
    delete ui;
}
//FUNCTION DECLARATION
static void readXml() {
    QMessageBox mbx;
    QFile myFile(":/xml/champs/ashe_prototype.xml");
    QXmlStreamReader stream( &myFile );
    myFile.open(QFile::ReadOnly);

    if (myFile.isOpen()) {
        //MESSAGE BOXES**********************************************
        mbx.setText(" It is Open XD");
        mbx.setStandardButtons(QMessageBox::Abort | QMessageBox::Ok);
        mbx.exec();
        //WHILE LOOPS***********************************************
        while (!stream.atEnd()){
            stream.readNext();
            if (stream.isStartElement()) {
                if (stream.name()=="Details") {
                    if (stream.name()=="Name"){
                        //should add a code to add it to the costume label Champ_Name_Label.
                        //now here, i am supposed to link the name "Akali" to Champ_Name_Label 
                        //which is located in the form (ui) of this cpp... eg; this is called lolapp.ui
                        //i tried LOLApp-> LOLApp:: LOLApp. nothing seems to work, i tried it alot... 
                        //i just need to know how to put akali, string, into Champ_Name_Label. thanks

                    }
                }
            }
        }


    } else {
        mbx.setText(" It is NOT Open");
        mbx.exec();
    }
}

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---

Added after 4 minutes:

Ok... sweet, i managed to read what i want from the xml.. now, the problem is assigning the data obtain to QObjects/Widgets

#include "lolapp.h"
#include "ui_lolapp.h"
#include "xmlstuff.h"
#include <QtXml>
 
//General Variables ***********************************************************************************
static void readXml();
bool inDetails,inSkills,inPassive,inQ,inW,inE,inR,inHealth,inMana,inEnergy,inPhys,inMag,inDef,inExtra;
//******************************************************************************************************
 
LOLApp::LOLApp(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LOLApp)
{
    ui->setupUi(this);
 
    //initialize booleans for xml reading//
    inDetails=inSkills=inPassive=inQ=inW=inE=inR=inHealth=inMana=inEnergy=inPhys=inMag=inDef=inExtra=false;
    //***********************************
 
    readXml();
}
 
LOLApp::~LOLApp()
{
    delete ui;
}
//FUNCTION DECLARATION
static void readXml() {
    QMessageBox mbx;
    QFile myFile(":/xml/champs/ashe_prototype.xml");
    QXmlStreamReader stream( &myFile );
    myFile.open(QFile::ReadOnly);
 
    if (myFile.isOpen()) {
        //MESSAGE BOXES**********************************************
        mbx.setText(" It is Open XD");
        mbx.setStandardButtons(QMessageBox::Abort | QMessageBox::Ok);
        mbx.exec();
        //WHILE LOOPS***********************************************
        while (!stream.atEnd()){
            stream.readNext();
            if (stream.isStartElement()) {
                if (stream.name()=="Details") {
                    if (stream.name()=="Name"){
                        //should add a code to add it to the costume label Champ_Name_Label.
                        //now here, i am supposed to link the name "Akali" to Champ_Name_Label 
                        //which is located in the form (ui) of this cpp... eg; this is called lolapp.ui
                        //i tried LOLApp-> LOLApp:: LOLApp. nothing seems to work, i tried it alot... 
                        //i just need to know how to put akali, string, into Champ_Name_Label. thanks
 
                    }
                }
            }
        }
 
 
    } else {
        mbx.setText(" It is NOT Open");
        mbx.exec();
    }
}

#include "lolapp.h"
#include "ui_lolapp.h"
#include "xmlstuff.h"
#include <QtXml>

//General Variables ***********************************************************************************
static void readXml();
bool inDetails,inSkills,inPassive,inQ,inW,inE,inR,inHealth,inMana,inEnergy,inPhys,inMag,inDef,inExtra;
//******************************************************************************************************

LOLApp::LOLApp(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LOLApp)
{
    ui->setupUi(this);

    //initialize booleans for xml reading//
    inDetails=inSkills=inPassive=inQ=inW=inE=inR=inHealth=inMana=inEnergy=inPhys=inMag=inDef=inExtra=false;
    //***********************************

    readXml();
}

LOLApp::~LOLApp()
{
    delete ui;
}
//FUNCTION DECLARATION
static void readXml() {
    QMessageBox mbx;
    QFile myFile(":/xml/champs/ashe_prototype.xml");
    QXmlStreamReader stream( &myFile );
    myFile.open(QFile::ReadOnly);

    if (myFile.isOpen()) {
        //MESSAGE BOXES**********************************************
        mbx.setText(" It is Open XD");
        mbx.setStandardButtons(QMessageBox::Abort | QMessageBox::Ok);
        mbx.exec();
        //WHILE LOOPS***********************************************
        while (!stream.atEnd()){
            stream.readNext();
            if (stream.isStartElement()) {
                if (stream.name()=="Details") {
                    if (stream.name()=="Name"){
                        //should add a code to add it to the costume label Champ_Name_Label.
                        //now here, i am supposed to link the name "Akali" to Champ_Name_Label 
                        //which is located in the form (ui) of this cpp... eg; this is called lolapp.ui
                        //i tried LOLApp-> LOLApp:: LOLApp. nothing seems to work, i tried it alot... 
                        //i just need to know how to put akali, string, into Champ_Name_Label. thanks

                    }
                }
            }
        }


    } else {
        mbx.setText(" It is NOT Open");
        mbx.exec();
    }
}

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[stampede]

Make the "readXml" method a (non-static and not const) member of LOLApp class, then you will have access to ui form (via this->ui->something).

[zellwwf]

i removed static, and i added the following

this->ui->champ_name_label.setText("dkdkd");//resulted in "invalid use of this in non-member function
// when using the folloing:
ui->...// reulsted in ui was not declared in this scope

this->ui->champ_name_label.setText("dkdkd");//resulted in "invalid use of this in non-member function
// when using the folloing:
ui->...// reulsted in ui was not declared in this scope

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FULL CODE NOW:

#include "lolapp.h"
#include "ui_lolapp.h"
#include "xmlstuff.h"
#include <QtXml>
 
//General Variables ***********************************************************************************
void readXml();
bool inDetails,inSkills,inPassive,inQ,inW,inE,inR,inHealth,inMana,inEnergy,inPhys,inMag,inDef,inExtra;
//******************************************************************************************************
 
LOLApp::LOLApp(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LOLApp)
{
    ui->setupUi(this);
 
    //initialize booleans for xml reading//
    inDetails=inSkills=inPassive=inQ=inW=inE=inR=inHealth=inMana=inEnergy=inPhys=inMag=inDef=inExtra=false;
    //***********************************
 
    readXml();
}
 
LOLApp::~LOLApp()
{
    delete ui;
}
//FUNCTION DECLARATION
void readXml() {
    QMessageBox mbx;
    QFile myFile(":/xml/champs/ashe_prototype.xml");
    QXmlStreamReader stream( &myFile );
    myFile.open(QFile::ReadOnly);
 
    if (myFile.isOpen()) {
        //MESSAGE BOXES**********************************************
        mbx.setText(" It is Open");
        mbx.setStandardButtons(QMessageBox::Abort | QMessageBox::Ok);
        mbx.exec();
        //WHILE LOOPS***********************************************
        while (!stream.atEnd()){
            stream.readNext();
            if (stream.isStartElement()) {
                if (stream.name()=="Details") {
                    if (stream.name()=="Name"){
                        //should add a code to add it to the costume label Champ_Name_Label.
                       ui->champ_name_label.setText("asf");
 
                    }
                }
            }
        }
 
 
    } else {
        mbx.setText(" !It is Open");
        mbx.exec();
    }
}

#include "lolapp.h"
#include "ui_lolapp.h"
#include "xmlstuff.h"
#include <QtXml>

//General Variables ***********************************************************************************
void readXml();
bool inDetails,inSkills,inPassive,inQ,inW,inE,inR,inHealth,inMana,inEnergy,inPhys,inMag,inDef,inExtra;
//******************************************************************************************************

LOLApp::LOLApp(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LOLApp)
{
    ui->setupUi(this);

    //initialize booleans for xml reading//
    inDetails=inSkills=inPassive=inQ=inW=inE=inR=inHealth=inMana=inEnergy=inPhys=inMag=inDef=inExtra=false;
    //***********************************

    readXml();
}

LOLApp::~LOLApp()
{
    delete ui;
}
//FUNCTION DECLARATION
void readXml() {
    QMessageBox mbx;
    QFile myFile(":/xml/champs/ashe_prototype.xml");
    QXmlStreamReader stream( &myFile );
    myFile.open(QFile::ReadOnly);

    if (myFile.isOpen()) {
        //MESSAGE BOXES**********************************************
        mbx.setText(" It is Open");
        mbx.setStandardButtons(QMessageBox::Abort | QMessageBox::Ok);
        mbx.exec();
        //WHILE LOOPS***********************************************
        while (!stream.atEnd()){
            stream.readNext();
            if (stream.isStartElement()) {
                if (stream.name()=="Details") {
                    if (stream.name()=="Name"){
                        //should add a code to add it to the costume label Champ_Name_Label.
                       ui->champ_name_label.setText("asf");

                    }
                }
            }
        }


    } else {
        mbx.setText(" !It is Open");
        mbx.exec();
    }
}

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[stampede]

i removed static, and ...

Make this method a non-static member of a class.

[zellwwf]

i am an idiot, but how do i do that? should i create a class for it? can u provide an example?

[stampede]

should i create a class for it?

You already have a class, what I mean is to add a method to it.

can u provide an example?

Sure, there is a nice set of examples by Bruce Eckel, read here.