QZipReader and QZipWriter are part of QtCore, as private API. They used to live in QtGui, but got moved a while ago to support some unit tests and because they don't *really* need anything from QtGui. QZipWriter is used inside of Qt, in the ODF file exporter in QtGui, but QZipReader is only used by unit tests and experimental code.
It looks like QZipReader is one of the most requested features for Qt, one we
have never provided. Keeping it as private API is, in my opinion, a big
disservice to our users. This API is nowhere near the quality level that one
would expect from Qt APIs. For one thing, as a private API, it is not subject
to any bug reports ("submit patch please"), including security fixes. And yet
users are finding it and using this private API, because it is there, and this
prevents them from evaluating other solutions that may be superior. For
example, there are KF6Archive and libarchive, each with their own limitations
(out of scope).
Therefore, I'd like to propose we take one of these two actions:
1) remove them
2) promote them to public and official API (which need not be source-compatible
with what is there today)
Clearly option #2 would be of higher value to our users, but it's also the one
with the largest cost to us. We may also take both actions: remove now and re-
add later, with a better & improved API, though that implies two separate
disruptions.
I am not volunteering myself to do #2. As maintainer of QtCore, I reserve the
right to reject inclusion of the new class to the library I maintain if I do
not feel the quality is good enough and/or the maintenance burden is too high.
Therefore, my preference is #1: remove with no promise of coming back.
If there are volunteers to work, I would suggestion you check on the
possibility of wrapping libarchive with a nicer Qt API and create a new
module. This may greatly reduce our maintenance burden.
--
Thiago Macieira - thiago.macieira (AT) intel.com
Principal Engineer - Intel DCG - Platform & Sys. Eng.
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