How to make QFile read the whole line

[ManiRon]

@ManiRon

But when the data conatins NUL the data will be " WQA.,?E>t1?dWQA.,DE_??n1?d7be1526df618c0c4d1bab3959adb65ada9f20bd969493e532a7861d29bc6e698 "

[jsulm]

@ManiRon said in How to make QFile read the whole line:

but thsi doest read the full data

What is the output of

qDebug() << actualRead << size_of_file;

?

[ManiRon]

@jsulm said in How to make QFile read the whole line:

size_of_file

Size = 194 .

I thought it was qdebug problem so i wrote the data read from the file to another file then also it remains the same as the data shown in the debug

[VRonin]

What is the value of actualRead?

[ManiRon]

@VRonin

Size = 194

[VRonin]

That means the read doesn't actually stop with the null

[ManiRon]

This post is deleted!

[ManiRon]

@VRonin

Yes you are right sir, So what can we do ?

[JonB]

@ManiRon
"What can we do" about what? You've spent the whole time claiming the read stops at the NUL, now you confirm it does not, so what's the problem?

[ManiRon]

@JonB

I am storing the data in QBytearray will that be a problem?

[ManiRon]

@JonB

the size it specifies is correct but the data displayed is till the NUL

[JonB]

@ManiRon said in How to make QFile read the whole line:

@JonB

the size it specifies is correct but the data displayed is till the NUL

But I said that was just how qDebug() displays data. Read up about how qDebug() displays strings/bytes, which may contain NUL.

[ManiRon]

@JonB

I have doubt in storing the data i store the data read in QBytearray

[JonB]

@ManiRon
So read up how qDebug() displays a QByteArray (as well as a QString)!!
Something even as old as https://www.qtcentre.org/threads/54236-qDebug-donsn-t-display-0x00?p=243053#post243053 will presumably do you.....

[ManiRon]

@JonB

Yes sir i can understand that it will take NUL as a terminate . Is there any way that i can store the full data along with the NUL

[Christian Ehrlicher]

@ManiRon said in How to make QFile read the whole line:

Is there any way that i can store the full data along with the NUL

It is stored, just qDebug() stops it's output when it sees NUL. Take a look at the link @JonB provided above.

[ManiRon]

@Christian-Ehrlicher sir i checked the data are read from the file fully but the problem is the way i store . I tried to store it in a QByteArray variable, a char array Variable, a QString Variable but all are terminating when the data has a NUL Inbetween, Now its not the problem of qDebug .

[Christian Ehrlicher]

You really should try to understand what we wrote. When you QFile::read() returns exactly the size of the file then all bytes are read and stored in the QByteArray. Just because qDebug() stops at NUL doesn't mean there is no data after that...

[ManiRon]

@Christian-Ehrlicher

ok sir, But i tried to write the data what ever i stored in a QBytearray to another file and the result was same . Thats why i concluded that QByteArray terminate at NUL and its mentioned
here
http://doc.qt.io/qt-5/qbytearray.html#details

[J.Hilk]

@ManiRon said in How to make QFile read the whole line:

@Christian-Ehrlicher

ok sir, But i tried to write the data what ever i stored in a QBytearray to another file and the result was same . Thats why i concluded that QByteArray terminate at NUL and its mentioned
here
http://doc.qt.io/qt-5/qbytearray.html#details

where exactly ?
because the docu clearly sates otherwise and, thats in the section you linked!

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