Debenu Quick PDF Library - PDF SDK Community Forum : corrupt XREF sections http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 04:42:00 +0000 Thu, 26 Oct 2006 08:24:39 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=530 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[corrupt XREF sections : Marian, the problem with invalid...]]> http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2411.html#2411 Author: ukobsa
Subject: 530
Posted: 26 Oct 06 at 8:24AM

Marian,

the problem with invalid XREFs mostly is caused by a wrong startxref values or invalid object positions on xref entries. What I tried to find is a way to rebuild an xref section from ground up.

greetings,
Uli]]> Thu, 26 Oct 2006 08:24:39 +0000 http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2411.html#2411 <![CDATA[corrupt XREF sections : Hi Ulrich, send please a test...]]> http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2407.html#2407 Author: marian_pascalau
Subject: 530
Posted: 26 Oct 06 at 7:16AM

Hi Ulrich,

send please a test sample to me. I will check your error and propose a sollution.

Gruß, Marian

]]> Thu, 26 Oct 2006 07:16:46 +0000 http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2407.html#2407 <![CDATA[corrupt XREF sections : Hi Ingo, I just looked for CheckObjects...]]> http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2312.html#2312 Author: ukobsa
Subject: 530
Posted: 06 Oct 06 at 6:22AM

Hi Ingo,

I just looked for CheckObjects in source code, but this seems to do nothing really useful: it needs the document being already loaded by QuickPDF and then only decodes each object. And it doesn't returns a result of the check.
So it doesn't help to check for xref sections.
But thanks for giving this hint!

greetings,
Uli]]> Fri, 06 Oct 2006 06:22:54 +0000 http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2312.html#2312 <![CDATA[corrupt XREF sections : Hi Uli! With QuickPDF you can...]]> http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2311.html#2311 Author: Ingo
Subject: 530
Posted: 06 Oct 06 at 5:28AM

Hi Uli!

With QuickPDF you can only test if a pdf is valid or not (CheckObjects). Chicks told in an older postings how to use pdftk in such a case. It's opensource - perhaps you can detect the relevant code-parts in pdftk? Or you can implement pdftk in your solution via shell/shellexecute...

Best regards,
Ingo
]]> Fri, 06 Oct 2006 05:28:43 +0000 http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2311.html#2311 <![CDATA[corrupt XREF sections : Hi all, sometimes I get pdfs...]]> http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2310.html#2310 Author: ukobsa
Subject: 530
Posted: 06 Oct 06 at 5:02AM

Hi all,

sometimes I get pdfs from our customers with a corrupt xref section and cannot open it with QuickPDF. I know that it is possible to repair them with pdftk but I need a solution to do this with QuickPDF.
As I have not found anything in QuickPDF to do such a repair: has someone implemented such a functionality and would be willing to shared the code?
Or how would you implement such a repair functionality?

Thankx,
Uli]]> Fri, 06 Oct 2006 05:02:47 +0000 http://www.quickpdf.org/forum/corrupt-xref-sections_topic530_post2310.html#2310