Okay, I took note.
Many thanks to all who took the hassle to reply to my weird questions.
I will study and experiment a little bit more before, possibly, coming back
to this topic.
On Fri, Mar 22, 2013 at 11:35 AM, Benjamin Podszun-2 [via iText - General] <
ml-node+s2136553n4657882...@n4.nabble.com> wrote:
> I have the impression that you try to do something very, very specific for
> the lifetime of this long thread, but you're not sharing your requirements
> constructing weird 'suppose that..' scenarios instead.
>
> People try to help you, answer all your requests so far, but from this
> particular point of view I doubt that anyone _can_ help you, unless you're
> sharing what you actually want to do. Without much hand waiving and
> dropping weasel words like in "detect suspicious PDF files".
>
> My humble opinion and all, of course.
> Ben
>
>
> On Thu, Mar 21, 2013 at 6:48 PM, adriano <[hidden
> email]<http://user/SendEmail.jtp?type=node&node=4657882&i=0>
> > wrote:
>
>> Ok, then suppose the incoming PDF document includes a stream object
>> containing text that would cause trouble to the recipient if it only was
>> visible, but it is not because it is not referenced in any page that the
>> document is officially comprised of, according to the "effective" document
>> Catalog. This document might even contain an extra Catalog that would cause
>> the invisible text to become visible, if it only was in effect, but is not
>> because it is located in an area of the PDF file that is also ignored.
>> Again, I would rise my eyebrow if I noticed something like that "by hand",
>> and still more I would like to detect such a situation if I was processing
>> a PDF document in an unattended way.
>>
>> I perfectly understand that by processing the PDF document in a *standard
>> * way that extra objects would just be ignored.
>> I just would like to detect such situations -- of course by processing
>> the PDF in a non-standard way.
>>
>> I also understand from your comments that you consider my arguments just
>> nonsense, okay.
>> I just tried to ask....
>>
>>
>>
>> On Wed, Mar 13, 2013 at 3:49 PM, Leonard Rosenthol-3 [via iText -
>> General] <[hidden
>> email]<http://user/SendEmail.jtp?type=node&node=4657874&i=0>
>> > wrote:
>>
>>> On 3/13/13 3:12 PM, "adriano" <[hidden
>>> email]<http://user/SendEmail.jtp?type=node&node=4657816&i=0>>
>>> wrote:
>>>
>>> >Now, mkl, suppose you have to "process" the incoming PDF document as a
>>> >whole, without altering it in any way....
>>>
>>> Yes and no.
>>>
>>> The process by which one processes a PDF document, where one starts with
>>> the trailer->root/Catalog->Š, would mean that any objects that are NOT
>>> referenced in the current xref table OR that are not linked into the
>>> object tree, will be ignored.
>>>
>>>
>>> Leonard
>>>
>>>
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