Review Request 129909: Fix reading comicbooks in zip format

[Albert Astals Cid]

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https://git.reviewboard.kde.org/r/129909/#review102349
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It's a bug in KArchive or a bug in Qt.
https://mail.kde.org/pipermail/kde-frameworks-devel/2017-February/042506.html

- Albert Astals Cid


On feb. 1, 2017, 3:44 p.m., Eugene Shalygin wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/129909/
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> (Updated feb. 1, 2017, 3:44 p.m.)
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> Review request for Okular and Albert Astals Cid.
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> Repository: okular
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> Description
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> 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.
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> Diffs
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>   generators/comicbook/document.cpp 34c4cb5a 
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> Diff: https://git.reviewboard.kde.org/r/129909/diff/
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> Testing
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> Well, it loads .cbr files now :)
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> Thanks,
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> Eugene Shalygin
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