Help using KArchive with GZIP files

[Albert Astals Cid]

El dimarts, 3 de novembre de 2020, a les 17:41:28 CET, Gabriel Domínguez Camarero va escriure:
> Hi,
> 
> 
> 
> The first question " I have tried to do this but there some error that block me to open a file. I dont know if i am using correctly the class KCompressionDevice." is related with the code down bellow.
> 
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> auto kgzip = KCompressionDevice(QUrl(where.toString() + “/” + fileName + “.gz”).toLocalFile(), KCompressionDevice::GZip);
> assert(kgzip.isOpen() == true);
> 
> 
> 
> kgzip.write(QString("hello World").toUtf8());
> kgzip.close();

Well the code above doesn't compile; you can't assign KCompressionDevice around.

Also if you don't open the device, it won't open itself.

So 

#include <KCompressionDevice>
#include <QDebug>

int main(int argc, char *argv) {
    KCompressionDevice kgzip("hola.gz", KCompressionDevice::GZip);
    kgzip.open(QIODevice::WriteOnly);
    qDebug() << kgzip.isOpen();
    kgzip.write(QString("hello World").toUtf8());
    kgzip.close();
}

This does compile and creates a hola.gz file with hello Worlds as its contents.

Cheers,
  Albert

> 
> 
> El 02/11/2020 22:34 Albert Astals Cid <aacid at kde.org> escribió:
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> El dilluns, 2 de novembre de 2020, a les 22:23:44 CET, Gabriel Domínguez Camarero va escriure:
> Hello I am gabridc,
> Hello Gabriel, this KDE Frameworks devel is for discussion around development *of* KDE Frameworks not *with* KDE Frameworks, your question belongs to kde-devel at kde.org
> 
> 
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> 
> 
> 
> I am a developer for Index-fm and we are trying to integrate KArchive in the file explorer, I have tried to do this but there some error that block me to open a file. I dont know if i am using correctly the class KCompressionDevice.
> Is this question related to the code down below? or different?
> 
> 
> Also, I would to ask another question because I would like to write a file inside my file.gz but in this case I dont have the function writeFile like KTar or KZip classes.
> You can't write a file *inside* a gz file, a gz is not multiple files, it's just one file (a .tar.gz is still just one gz file, it's the tar part that has multiple files).
> 
> 
> Cheers,
> Albert
> 
> 
> 
> 
> 
> 
> auto kgzip = KCompressionDevice(QUrl(where.toString() + “/” + fileName + “.gz”).toLocalFile(), KCompressionDevice::GZip);
> assert(kgzip.isOpen() == true);
> 
> 
> 
> 
> kgzip.write(QString("hello World").toUtf8());
> kgzip.close();