PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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PostPosted: Wed Sep 23, 2009 3:43 pm 
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Joined: Wed Sep 23, 2009 2:45 pm
Posts: 3
Hi, I have been using PDFSharp for a while and it has been working OK, but recently users have found problems with PDF files generated with a new scanner.
When the following line of code is executed:

Code:
PdfDocument inputDocument = PdfReader.Open(file, PdfDocumentOpenMode.Import)


an exception of type PdfReaderException is raised with the following message: Token '38438' was not expected.

Could this be that the PDF file generated by the scanner contains elements not supported by PDFSharp? Is there an easy way to fix this problem modifying the code? The problem file can be downloaded from http://theglobe.urudata.com/jbriosso/FACTURA-DISTRICOMP.pdf.

Thanks in advance!

Regards,
Martin


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PostPosted: Wed Sep 23, 2009 4:10 pm 
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Joined: Mon Oct 16, 2006 8:16 am
Posts: 3023
Location: Cologne, Germany
Hi, Martin,

this is not my area of expertise, but I have a patch that'll work with that file (I hope you don't come up with cruder files ...).

In Parser.cs you'll find
Code:
internal PdfTrailer ReadTrailer()


Replace this old code
Code:
string trail = this.lexer.ReadRawString(length - 31, 30); //lexer.Pdf.Substring(length - 30);
int idx = trail.IndexOf("startxref");
this.lexer.Position = length - 31 + idx;


with this new snippet:
Code:
string trail = this.lexer.ReadRawString(length - 131, 130);
int idx = trail.IndexOf("startxref");
this.lexer.Position = length - 131 + idx;

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Regards
Thomas Hoevel
PDFsharp Team


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PostPosted: Wed Sep 23, 2009 4:20 pm 
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Joined: Wed Sep 23, 2009 2:45 pm
Posts: 3
Thanks Thomas, I will try what you suggest.


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PostPosted: Wed Sep 23, 2009 5:24 pm 
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Joined: Wed Sep 23, 2009 2:45 pm
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It worked great! Thanks!


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