Review Request 110719: fix KoXmlReader to break on error instead of trying on and on

[Commit Hook]

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This review has been submitted with commit 0a4cc79a9b94dea9fffba37368201615c3eff5f1 by Friedrich W. H. Kossebau to branch calligra/2.7.

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On May 30, 2013, 9:13 a.m., Friedrich W. H. Kossebau wrote:
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> http://git.reviewboard.kde.org/r/110719/
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> (Updated May 30, 2013, 9:13 a.m.)
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> Review request for Calligra.
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> Description
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> Words currently will hang with hot wheels on loading the file http://heap.kogmbh.net/vandenoever/tmp/yo.odt
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> Reason is that the condition to break the parsing is only testing if the end is officially reached. But as the API Dox of QXmlStreamReader::readNext() ( http://qt-project.org/doc/qt-4.8/qxmlstreamreader.html#readNext) tells "The exception is when error() returns PrematureEndOfDocumentError. This error is reported when the end of an otherwise well-formed chunk of XML is reached, but the chunk doesn't represent a complete XML document."
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> So also checking for !xml.hasError() seems needed.
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> Okay to backport to 2.7?
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> Now this bug was just uncovered because of another problem:
> for some reason the file meta.xml seems to be not properly extracted from the odt, so this can be seen in the log (with this patch applied):
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> words(17718)/koffice (lib komain): Parsing error in  "meta.xml" ! Aborting! 
>  In line:  1 , column:  0 
>  Error message:  "Premature end of document." 
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> Unzipping yo.odt with unzip shows that meta.xml has some proper looking content. So possibly our zip reading code has a bug. Needs to be investigated separately.
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> Diffs
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>   libs/odf/KoXmlReader.cpp b5fe9f8 
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> Diff: http://git.reviewboard.kde.org/r/110719/diff/
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> Testing
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> Thanks,
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> Friedrich W. H. Kossebau
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