qUncompress Z_DATA_ERROR error

Julieng

Hello,

I am facing an issue which I cannot solve when I uncompress data with qUncompress. I need to open an XML file to be read by a QDomDocument.

When tesing this, it works perfectly.

            QFile f1(filePath);
            f1.open(QIODevice::ReadOnly | QIODevice::Text);
            QByteArray b1 = f1.readAll();
            QByteArray b2 = qCompress(b1);
            QByteArray b3 = qUncompress(b2);
            document.setContent(b3);

When doing the same through a QFile, it fails with error "qUncompress: Z_DATA_ERROR: Input data is corrupted"

            QFile f1(filePath);
            f1.open(QIODevice::ReadOnly | QIODevice::Text);
            QByteArray b1 = f1.readAll();
            QByteArray b2 = qCompress(b1);

            QFile f2(filePath + "c");
            f2.open(QIODevice::WriteOnly | QIODevice::Text);
            f2.write(b2);

            QFile f3(filePath + "c");
            f3.open(QIODevice::ReadOnly | QIODevice::Text);
            QByteArray b3 = qUncompress(f3.readAll());
            document.setContent(b3);

I really do not understand the difference in terms of compression/decompression. Any idea ? Thanks !!

Julieng

Sorry for this post, I found my mistake : remove "QIODevice::Text" in file open arguments...