Thanks Leonard -- I am working on getting a test case from the source of
the original document.
In the meantime, did you have a chance to take a look at the text at the
end of sectoin 7.5.8.1 of
http://www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf?
> The value following the startxref keyword shall be the offset of the
> cross-reference stream rather than the xrefkeyword. For files that use
> cross-reference streams entirely (that is, files that are not
> hybrid-reference files; see 7.5.8.4, "Compatibility with Applications That Do
> Not Support Compressed Reference Streams"), the keywords xref and trailer
> shall no longer be used. Therefore, with the exception of the startxref
> address %%EOFsegment and comments, a file may be entirely a sequence of
> objects.
Does that imply that in some situations a PDF may be valid WITHOUT a
trailer? Or is that a red herring in this case?
Leonard Rosenthol wrote:
> I can’t explain why Acrobat isn’t adding the trailer w/o seeing the
> original – sorry :(.
>
> Leonard
>
>
> On 6/11/09 5:04 PM, "Paul Gatewood" <[email protected]> wrote:
>
> Hi Bruno,
>
> Sorry for the confusion -- yes, the problem still exists.
>
> Again, here is exactly what I did, using Adobe Acrobat 9 Pro, Version
> 9.1.1 on Windows XP.
>
> 1) Start Acrobat
> 2) Open original file (without trailer)
> (sorry I can not supply this -- it has confidential information
> from a 3rd party)
> 3) Choose TouchUp Object tool (this PDF only has 2 images)
> 4) Right click each of the 2 images, and choose "delete"
> 5) Choose File -> Save As
> 6) Enter "leonard.pdf" for the file name (Save as type: Adobe PDF File)\
> 7) Exit
>
> The file I just produced is attached. It was produced using exactly
> the steps described above. There was no binary editor involved -- it
> was exclusively Acrobat, and has no trailer.
>
> I do not know what was used to produce the original file (the one which
> I am not able to supply here, due to confidential/proprietary content).
>
> I am inquiring here (where I work) as to whether the producer of that
> original file might be able to produce a sample file using the same tool
> to create the original, but with vanilla content, so that I/we may use
> it for troubleshooting/testing via this public forum, but I am not sure
> when this will work out (there are a few layers of government people
> involved).
>
> I guess in the meantime, do I understand the following correctly?
> a) the trailer is ALWAYS required, under ALL conditions
> b) the text I quoted from the PDF specification I cited
> doesn't have anything to do with this situation
>
> Also, does anyone know anything further regarding Acrobat 9 not adding a
> trailer when using "Save As" (when the original document did not have a
> trailer)?
>
> In the past, when such files (without trailer) were encountered, I could
> 1) have the suppliers notified that the file was not valid PDF, due
> to the missing trailer, and
> 2) remedy the situation by opening it in Acrobat (don't recall whether
> it was Acrobat 7 or 8)
>
> But since Acrobat 9 is not adding the missing trailer, I would like to
> know more before I have the suppliers told that they are supplying an
> invalid PDF.
>
> Thanks
> -Paul
>
> Bruno Lowagie wrote:
> > Paul Gatewood wrote:
> > > Please ignore the text
> > > "Yes, I produced the file as follows: "
> > > after my name -- I had started to describe what I had done before I
> > > decided to just do it again, step-by-step, to be sure.
> >
> > I don't understand: is there still a problem?
> > Or did redoing everything step-by-step solve the problem?
> > br,
> > Bruno
> >
> >
>
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>
> --
> Leonard Rosenthol
> PDF Standards Architect
> Adobe Systems Incorporated
>
>
> ------------------------------------------------------------------------
>
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------------------------------------------------------------------------------
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Check out the new simplified licensing option that enables unlimited
royalty-free distribution of the report engine for externally facing
server and web deployment.
http://p.sf.net/sfu/businessobjects
_______________________________________________
iText-questions mailing list
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Buy the iText book: http://www.1t3xt.com/docs/book.php
Check the site with examples before you ask questions:
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