QMultiBuffer

QMultiBuffer is a QIODevice-based class for easy working with a few byte-streams as with single. Data sources may be QIODevice-based objects (QFile, QTctSocket and so on), QByteArrays. This class let you merge few sources into one data stream and works with it as with standard IO-device.

Example

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QMultiBuffer mb;
QByteArray ba("This is a first data stream");
QFile f("/path/to/file"); // let a file contains string "This is a file contents"

mb.append(&ba);
mb.append(&f);
mb.append(&ba);

mb.open(QIODevice::ReadOnly);

qDebug() << mb.readAll();

mb.seek(10);

qDebug() << mb.read(10);

// a as result we get a two string "This is a first data streamThis is a file contentsThis is a first data stream"
// and "first data"