In this case, as I said, I see that the original PDF was created with
iText. There is an XObject Dictionary with one Stream object ("/lm0" --
I'm verifying if that is always the name).
However, the end-user added their comment (and yes, I don't know why
they didn't use a specific comment tool) with some version of Acrobat --
that much I do know. I'm guessing they used the Text Edit tool or
something instead of the Commenting or Stamp options in that app.
Too bad we can't tell when a specific object was added to the file (I
CAN see that the modify date of the file is different from the create date).
On 2/14/2012 11:32 AM, 1T3XT BVBA wrote:
> On 14/02/2012 17:23, AJ Weber wrote:
>> Right. How do I determine if the text in the /Contents stream is the
>> intended contents of the page, or whether someone added it
>> after-the-fact? Ugh. Users...
> It depends on how the text was added.
>
> For instance: if they used PdfStamper, there will be different content
> streams in an array.
> Maybe the content you want to remove is in one array, which you could
> remove.
>
> Or maybe it was added as an XObject.
> In that case, blanking out the content of that XObject would solve your
> problem.
>
> Or maybe it's really inside the main content stream.
> In that case, you need to write a PDF syntax parser (I've written
> several in the past) using PRTokeniser.
> Let the parser copy all the PDF syntax except for the Text Operators
> (and its operands) that draw the text you want to remove.
>
> Have fun!
>
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>
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The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
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_______________________________________________
iText-questions mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/itext-questions
iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
