using QSettings to read an ini file

[gye325]

What happens if you removed the spaces?:
Position=0,204,203,0;cmd,x,y,w,b

that file can't be edited. I have to read it as it is

[high_flyer]

It doesn't matter, make a copy, and edit the copy and try that.
If you then can get the value, then at least you know what the problem is, and you know that you either have to subclass QSettings to allow that kind of lines, or do the reading your self.

[gye325]

It doesn't matter, make a copy, and edit the copy and try that.
If you then can get the value, then at least you know what the problem is, and you know that you either have to subclass QSettings to allow that kind of lines, or do the reading your self.

ah ok. just tried that. still doesn't return anything. i get a return of "", like before. any recommendations?

[high_flyer]

Post your code.

[gye325]

QString grpName = "WINDOW_" + QString::number(i+1);
        set.beginGroup(grpName);
        CnaWindow *win = new CnaWindow();
        win->title= set.value("Title").toString();
        win->number= set.value("Number").toInt();
        win->position= set.value("Position").toString();
        set.endGroup();

QString grpName = "WINDOW_" + QString::number(i+1);
        set.beginGroup(grpName);
        CnaWindow *win = new CnaWindow();
        win->title= set.value("Title").toString();
        win->number= set.value("Number").toInt();
        win->position= set.value("Position").toString();
        set.endGroup();

To copy to clipboard, switch view to plain text mode 

and here's a part of the ini file

[WINDOW_14]
Title=Balken
Type=2
Comment=Balken-Fenster
Number=14
Position=0, 50, 50, 450, 100 ;cmd, x, y, w, h
DisplayMask=32
JointIndex=4294967295
Grid=1
RelMode=0
VerMode=0
ShowLegend=1
LegendPixWidth=66
YValue=0
ObjectMode=0
AxisWidth=0
AxisHeight=0
SigDispMode=2
LegendPos=2
LegendHeight=0
LegendScrollPos=0
AxisScrollPos=6594188
ShowSignalComments=1
MaximizeToPage=0, 0, 0, 0 ;x, y, w, h

[high_flyer]

Hmm...
What does "contains" return:

QString grpName = "WINDOW_" + QString::number(i+1);
        set.beginGroup(grpName);
        CnaWindow *win = new CnaWindow();
        win->title= set.value("Title").toString();
       bool bContains = set.contains("Number");
        win->number= set.value("Number").toInt();
        bContains = set.contains("Position");
        win->position= set.value("Position").toString();
        set.endGroup();

QString grpName = "WINDOW_" + QString::number(i+1);
        set.beginGroup(grpName);
        CnaWindow *win = new CnaWindow();
        win->title= set.value("Title").toString();
       bool bContains = set.contains("Number");
        win->number= set.value("Number").toInt();
        bContains = set.contains("Position");
        win->position= set.value("Position").toString();
        set.endGroup();

To copy to clipboard, switch view to plain text mode 

And, do you get a string if you change the value of "Position" to some normal string:
Position=test

Also, try this:

QStringList keys = set.childKeys();

QStringList keys = set.childKeys();

To copy to clipboard, switch view to plain text mode 

[gye325]

'contains' will only check if that string is contained in that group

yeap, i do get the normal string. i'm just wondering why something like '0, 0, 2, 4' can't be treated like a normal string. even without the spaces in between

and 'set.childKeys' basically returns 'Title', 'Type', 'Comment', all the strings that appear before the '=' in each line

[high_flyer]

'contains' will only check if that string is contained in that group

I know. But I wanted to make sure that "Position" is seen as part of the group.

i'm just wondering why something like '0, 0, 2, 4' can't be treated like a normal string. even without the spaces in between

I don't know, to answer that you can look in the QSettings code.
My guess is, that QSettings will read a line until it encounters some sort of what it considers to be an end of line, maybe ';' or maybe it only looks for alpha numerics, so the next ',' stops it...
At least you know what the problem is, that usually is half of the solution.
Now you can subclass QSettings, and adjust it to handle such lines too.

[gye325]

My guess is, that QSettings will read a line until it encounters some sort of what it considers to be an end of line, maybe ';' or maybe it only looks for alpha numerics, so the next ',' stops it...
At least you know what the problem is, that usually is half of the solution.
Now you can subclass QSettings, and adjust it to handle such lines too.

how do i adjust QSettings to handle such lines too?

[high_flyer]

Amm... you code it?
Or I don't understand your question.
Look in to QSettings to see what it does when you call value().
Step through, and see what makes it return and not read the line.
In your subclass then, introduce code that will allow dealing with such lines as the one you have.

Another options is to not use QSettings at all, but write your own class for it.
Since you have rather a simple case (each key is the start of a line, and ends with '=', and value is everything until the end of the line) this should be rather easy to implement.

[mcosta]

I tried with several string values,

when the string contains comma ',', semicolon ';' or equal '=' character, you have to "quote" the string

this

Position="0, 50, 50, 450, 100 ;cmd, x, y, w, h"

Position="0, 50, 50, 450, 100 ;cmd, x, y, w, h"

To copy to clipboard, switch view to plain text mode 

works

[high_flyer]

Yes, but as he said, he can't change the ini file...
He will have to change the way QSettings deals with ',' ';' and '=' mamely, only stop on \r\n.

[mcosta]

Probably he have to use QSettings::registerFormat() in order to create a "special" INI parser.

QSettings has not virtual methods or properties to access the INI parser

[high_flyer]

Probably he have to use QSettings::registerFormat() in order to create a "special" INI parser

Yes, this looks like a good way to go.