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https://issues.apache.org/jira/browse/PDFBOX-5539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17705079#comment-17705079
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Moritz Flöter commented on PDFBOX-5539:
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Firstly thanks for the effort – it looks great!
Unfortunately, the recent commit does not fix all the issues with the
ClassCastException.
If you navigate to Object 30 and expand it to select the SMask entry, a similar
exception will be thrown upon selection of the SMask entry (which is Object 31).
Directly navigating to object 31 is working.
> Show CRT in PDFDebugger
> -----------------------
>
> Key: PDFBOX-5539
> URL: https://issues.apache.org/jira/browse/PDFBOX-5539
> Project: PDFBox
> Issue Type: New Feature
> Components: Utilities
> Affects Versions: 2.0.27, 3.0.0 PDFBox
> Reporter: Moritz Flöter
> Assignee: Andreas Lehmkühler
> Priority: Major
> Fix For: 3.0.0 PDFBox
>
> Attachments: Frühlingsangebot.pdf
>
>
> For analyzing potentially erroneous PDFs it would be quite helpful to be able
> to show the CRT (Cross Reference Table/xref) and navigate to its entries.
> Some software does provide rather technical (and therefore quite precise)
> information about errors in the PDF files mentioning the object number in the
> pdf file instead of page numbers. With PDF-Debugger, I currently have to
> navigate the Document Catalog Tree structure to find the object. Furthermore,
> navigating the tree structure does not enable one to view unreferenced
> objects.
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