PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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PostPosted: Thu Aug 14, 2008 5:41 pm 
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Joined: Fri Jul 25, 2008 6:17 pm
Posts: 4
When executing this code:

// Open the document to import pages from it.
PdfDocument inputDocument = PdfReader.Open(file, PdfDocumentOpenMode.Import);

I get the following error message:
Not Implemented; unknown escape character.

at Lexer.ScanLiteralString()
at Lexer.ScanNextToken()
at Parser.ScanNextToken()
at Parser.ParseObject(Symbol stop)
at Parser.ReadDictionary(PdfDictionary dict, Boolean includeReferences)
at Parser.ReadObject(PdfObject pdfObject, PdfObjectID objectID, Boolean includeReferences)
at PdfReader.Open(Stream stream, String password, PdfDocumentOpenMode openmode, PdfPasswordProvider passwordProvider)
at PdfReader.Open(Stream stream, String password, PdfDocumentOpenMode openmode)
at PdfReader.Open(Stream stream, PdfDocumentOpenMode, openmode)


I am using version 1.2.1269.0. Any help?


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PostPosted: Mon Aug 18, 2008 7:25 am 
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empira Employee
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Joined: Mon Oct 16, 2006 8:16 am
Posts: 2807
Location: Cologne, Germany
For further examination we need the PDF file that causes this problem.

A download link would be fine (PM or post it here); I can also send you an e-mail adress if you prefer that.

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Thomas Hoevel
PDFsharp Team


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PostPosted: Thu Sep 09, 2010 2:16 pm 
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Joined: Thu Sep 09, 2010 6:38 am
Posts: 1
is this solved?

I get a simmilar error.
I can choose to Abort, Try again and Ignore....

I havn't examine the created pdf, but it's looks not that bad.

Code:
at Lexer.ScanLiteralString()  Lexer.cs(690)
    at Lexer.ScanNextToken()  Lexer.cs(123)
    at Parser.ScanNextToken()  Parser.cs(484)
    at Parser.ParseObject(Symbol stop)  Parser.cs(375)
    at Parser.ReadDictionary(PdfDictionary dict, Boolean includeReferences)  Parser.cs(333)
    at Parser.ReadObject(PdfObject pdfObject, PdfObjectID objectID, Boolean includeReferences)  Parser.cs(168)
    at PdfReader.Open(Stream stream, String password, PdfDocumentOpenMode openmode, PdfPasswordProvider passwordProvider)  PdfReader.cs(355)
    at PdfReader.Open(String path, String password, PdfDocumentOpenMode openmode, PdfPasswordProvider provider)  PdfReader.cs(206)
    at PdfReader.Open(String path, PdfDocumentOpenMode openmode)  PdfReader.cs(178)



When I'm debugging I get the error first time I open a file. Then I click on Try again and the debugging halts and then I reusme debugging.
Running the same operation again. No errors.


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PostPosted: Mon Sep 13, 2010 8:47 am 
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empira Employee
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Joined: Mon Oct 16, 2006 8:16 am
Posts: 2807
Location: Cologne, Germany
Fredrik wrote:
is this solved?

I got no PDF file yet that allows me to replicate the problem and investigate it.

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Thomas Hoevel
PDFsharp Team


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PostPosted: Wed Nov 08, 2017 3:20 pm 
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Joined: Wed Nov 08, 2017 3:10 pm
Posts: 2
Hi,

I have just started using PdfSharp and I really do love what has been done here. However, I have a problem reading some, not all, of my very sensitive pdf docs. The Error I get says the letter 'L' is not implemented ("Not implemented; unknown escape character.") :D .

Can you please help,

Regards,
Samy


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PostPosted: Wed Nov 08, 2017 3:37 pm 
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empira Employee
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Joined: Mon Oct 16, 2006 8:16 am
Posts: 2807
Location: Cologne, Germany
Hi, Samy!
SamyCox wrote:
The Error I get says the letter 'L' is not implemented ("Not implemented; unknown escape character.") :D .
Since the PDF files are sensitive, we leave the debugging to you. :lol:

Is it just a Debug Assertion you get? Ignore it.

Are these PDF files from Autocad? They often use the escape symbol where it shouldn't be used.

Are you using the latest PDFsharp 1.50?
viewtopic.php?p=10008#p10008

You can take the latest source, open the file Lexer.cs and remove the lines "ParserDiagnostics.HandleUnexpectedCharacter(ch)".
This fix will be included in the next release of PDFsharp.
If that does not resolve the issue, then try to find a PDF file you can share with us that shows the same error.

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Thomas Hoevel
PDFsharp Team


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PostPosted: Thu Nov 09, 2017 6:57 am 
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Joined: Wed Nov 08, 2017 3:10 pm
Posts: 2
Hi,

Thomas Hoevel wrote:
Are these PDF files from Autocad?


The PDF's are created using Oracle forms. In any case, I will try your suggestion and see how far that takes me.

Regards,
Samy


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