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https://issues.apache.org/jira/browse/PDFBOX-1133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14200017#comment-14200017
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Pierre Huttin commented on PDFBOX-1133:
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I'm agree with the fact an FDF stamp appearance stream is not a real "PDF
file", but it could be a complete COSDocument, like in the sample I've attached
to this issue. The problem here we are missing in PDFBox a real COSDocument
parser, usually it's when we use dynamic stamp as the standards provided by
adobe reader like: Approved by, Reviewed+ date, etc.. and also if you add some
custom stamps Adobe Reader request to import them as PDF, and finally inclue
the content of the pdf file into the appearance attribute of the stamp.
> Refactoring PDFParser.parseHeader() method
> ------------------------------------------
>
> Key: PDFBOX-1133
> URL: https://issues.apache.org/jira/browse/PDFBOX-1133
> Project: PDFBox
> Issue Type: Improvement
> Components: Parsing
> Affects Versions: 1.7.0
> Reporter: Pierre Huttin
> Priority: Minor
> Attachments: PDFParser.java.patch, sample.cdata_decoded.cos,
> sample.xfdf
>
>
> Re-factoring the method parseHeader() method to support an extra header
> declaration : "%CSO-".
> This header is foundable into some XFDF document, when the stamp appearance
> stream is define as complete COSDocument. This special document use
> "%CSO-1.0" as header declaration.
> So I purpose to enhance the PDFReader to be able to parse this kind of
> document.
> Pierre Huttin
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