[jira] [Commented] (TIKA-1841) Different XML output structure for PPT and PPTX

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TIKA-1841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16736461#comment-16736461 ] 

ASF GitHub Bot commented on TIKA-1841:
--------------------------------------

dstevenson commented on issue #86: fix for TIKA-1841 contributed by zetisam
URL: https://github.com/apache/tika/pull/86#issuecomment-452113630
 
 
   Is there a reason this is being held off on? The current output from XSLF extraction is very hard to parse to do anything useful with since it's a flat structure that may or may not contain a notes block.
 
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> Different XML output structure for PPT and PPTX
> -----------------------------------------------
>
>                 Key: TIKA-1841
>                 URL: https://issues.apache.org/jira/browse/TIKA-1841
>             Project: Tika
>          Issue Type: Improvement
>          Components: parser
>    Affects Versions: 1.11
>            Reporter: Sam H
>            Priority: Major
>
> Issue is slightly related to TIKA-1840
> I've noticed that the XML structure of Powerpoint (PPT) and PPTX files is different. 
> The structure for PPTX seems as follows:
> {code}
> <div class="slide-content"></div>
> <div class="slide-master-content" />
> <div class="slide-notes"></div> //optional
> <div class="slide-comment"></div> //optional
> ...
> <div class="slide-content"></div>
> <div class="slide-master-content" />
> <div class="slide-notes"></div> //optional
> <div class="slide-comment"></div> //optional
> {code}
> Note that there's no parent slide element to indicate the start and end of each slide.
> For powerpoint the structure is as follows:
> {code}
> <div class="slideShow">
>   <div class="slide">
>     <div class="slide-master-content"></div>
>     <div class="slide-content"></div>
>     <div class="slide-notes"></div> //added in TIKA-1840
>     <div class="slide-comment"></div> 
>   </div>
>   ...
>   <div class="slide">
>     <div class="slide-master-content"></div>
>     <div class="slide-content"></div>
>     <div class="slide-notes"></div> //added in TIKA-1840
>     <div class="slide-comment"></div>
>   </div>
> </div>
> <div class="slide-notes">
> {code}
> In my application, I'm using XPath to get the desired information . As the XML structure is different, I have to differentiate my XPath queries whether the file is PPT (old) or PPTX (new). It would be nice for Tika to return the same XML for both.
> I would propose changing the XML structure to this:
> {code}
> <div class="slideShow">
>   <div class="slide">
>     <div class="slide-master-content"></div>
>     <div class="slide-content"></div>
>     <div class="slide-notes"></div> //added in TIKA-1840
>     <div class="slide-comment"></div> 
>   </div>
>   ...
>   <div class="slide">
>     <div class="slide-master-content"></div>
>     <div class="slide-content"></div>
>     <div class="slide-notes"></div> //added in TIKA-1840
>     <div class="slide-comment"></div>
>   </div>
> </div>
> {code}
> So, essentially, like the current PPT output, but without the list of notes at the end (as this is also omitted for PPTX).
> On the one hand this generalizes PPT(X) handling, on the other it can break existing (external) functionality relying on a specific XML output format.
> I don't know if this is something the project wants fixed or not. If so, I'm willing to donate my time.



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