Review Request 129909: Fix reading comicbooks in zip format

[Eugene Shalygin]

> On Лют. 1, 2017, 2:18 після полудня, Albert Astals Cid wrote:
> > This works fine for me without your patch, so it's either that you use too old versions and the new ones are fixed or that i use too old versions and the new one has regressed.
> > 
> > Which KF5/Qt5 versions are you using.
> 
> Eugene Shalygin wrote:
>     I do have this problem for quite some time already (for a year, perhaps). The versions are 5.8.0 for Qt and Git master for KF5.
>     Could you check whether the QIODevice from KArchiveFile::createDevice() is seekable in your case, please?
> 
> Eugene Shalygin wrote:
>     I was wrong abou that. What seems to be important is that when `QIODevice::size()` returns 0, `QImageLoader` refuses to detect format. The patch has been corrected.
> 
> Eugene Shalygin wrote:
>     Actually, the thing is even simpler: QIODevice::seek() does not work with the `dev` object in my case.

result of KArchiveFile::createDevice() for ZIP archives behaves strangely in other cases on my system. I will investigate.


- Eugene


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On Лют. 1, 2017, 4:44 після полудня, Eugene Shalygin wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/129909/
> -----------------------------------------------------------
> 
> (Updated Лют. 1, 2017, 4:44 після полудня)
> 
> 
> Review request for Okular and Albert Astals Cid.
> 
> 
> Repository: okular
> 
> 
> Description
> -------
> 
> Okular refuses to load .cbr files because a `QIODevice` object returned by `KArchiveFile::createDevice()` reports its size to be 0 and because of that `QImageReader` refuses to read. Proposed solution: if that device's `QIODevice::size()` returns 0, copy its content into a temporary file and load image from the file.
> 
> 
> Diffs
> -----
> 
>   generators/comicbook/document.cpp 34c4cb5a 
> 
> Diff: https://git.reviewboard.kde.org/r/129909/diff/
> 
> 
> Testing
> -------
> 
> Well, it loads .cbr files now :)
> 
> 
> Thanks,
> 
> Eugene Shalygin
> 
>

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