> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Edward W. Rouse
> Sent: Thursday, August 21, 2008 4:09 PM
> To: 'Post all your questions about iText here'
> Subject: Re: [iText-questions] Extremely large PDFs
>
> So maybe I am looking at this the wrong way. If the xref
> table only uses int pointers, then pdf files shouldn't be
> able to be larger than 2Gb. So are you saying the pdf xref
> table or the iText xref table? I guess I need to take another
> look at the pdf spec.
The internal iText representation of the xref table. The PDF limit is 10G.
Paulo
>
> Edward W. Rouse
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Paulo Soares
> Sent: Thursday, August 21, 2008 10:47 AM
> To: Post all your questions about iText here
> Subject: Re: [iText-questions] Extremely large PDFs
>
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On
> > Behalf Of Edward W. Rouse
> > Sent: Thursday, August 21, 2008 3:20 PM
> > To: 'Post all your questions about iText here'
> > Subject: Re: [iText-questions] Extremely large PDFs
> >
> > It's due to the use of a byte array as the underlying data
> > structure which
> > has the 2Gb limit.
>
> The problem is not there but in the xref table that only uses
> int pointers.
>
> > It would be a monumental undertaking to
> > redo iText to use
> > something else, so I completely understand why this may never
> > happen.
>
> It's not an impossible task (and it would certainly be easier
> than the work done on signatures) as long as a single object
> was not greater than 2G, a reasonable "restriction". The
> problem is that only a couple of people would benefit from it
> and none of the current developers has a need for it.
> Furthermore, iText is not that suited to process files with
> lots of objects, it does too much work beforehand and for a
> splitting program, for example, most of it is not needed and
> just takes time and memory.
>
> Paulo
>
> > And
> > really, how many situations require handling such huge files?
> > I would say
> > not many.
> >
> > Right now I am looking at ways to take very large files and
> > split them down
> > into more manageable subfiles to pass to iText. If it was a
> > simple beak on
> > pages I would be done already. The sticking point is having
> > to determine an
> > exact place for a page break so that all of the pages that
> belong to a
> > smaller pdf stay in the same subfile. That and preserving all of the
> > original bookmark info in the subfiles.
> >
> > But it's the challenges that keep the job interesting ;)
> >
> > Edward W. Rouse
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