Working with split pdfs #26

Conaws · 2016-05-14T21:25:39Z

A few questions

What is the best way to save the output of split-pdf as a pdf?
Is java interop necessary for that, or another clojure library?
for instance, if I want to turn "/sample/pdf-title.pdf" into "sample/pdf-title-pages/1.pdf" "sample/pdf-title-pages/2.pdf"

dotemacs · 2016-05-14T22:15:20Z

Hi @Conaws

See if the test examples work for you:

https://github.com/dotemacs/pdfboxing/blob/master/test/pdfboxing/split_test.clj

I'll have a look at this a bit later.

Can I ask you to type in all that you type in at the repl?

Thanks

Conaws · 2016-05-15T19:19:24Z

Yeah, That's what I went off of. I got splitting to work fine, it's just I'm not familiar with PDDocuments so don't know how to output a new file.

Conaws · 2016-05-15T19:20:22Z

I've been using split-pdf and extract-text, but curious how to save each page as a new pdf

dotemacs · 2016-05-16T13:53:01Z

Hey @Conaws

see this function: merge-pddocuments:
https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L36

and see how it's being used:
https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L64

(merge-pddocuments :docs [pddoc1 pddoc2 pddoc3] :output "output.pdf")

Does that help?

Conaws · 2016-05-19T06:27:22Z

So you're saying I can't create a pdf of a single pddoc, I can only merge
multiple docs?

Or could I use merge-pddocuments with a vector of only one pddoc?

On Monday, May 16, 2016, Александар Симић notifications@github.com wrote:

Hey @Conaws https://github.com/Conaws

see this function: merge-pddocuments:

https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L36

and see how it's being used:

https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L64

(merge-pddocuments :docs [pddoc1 pddoc2 pddoc3] :output "output.pdf")

Does that help?

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dotemacs · 2016-05-19T06:46:07Z

Hello Conor

On 19 May 2016, at 08:27, Conor White-Sullivan notifications@github.com wrote:

So you're saying I can't create a pdf of a single pddoc, I can only merge
multiple docs?

Or could I use merge-pddocuments with a vector of only one pddoc?

You can create a PDF document with merge-pddocuments where only one PDDocument is supplied in a vector.

Please have a play with it yourself.

On Monday, May 16, 2016, Александар Симић notifications@github.com wrote:

Hey @Conaws https://github.com/Conaws

see this function: merge-pddocuments:

https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L36

and see how it's being used:

https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L64

(merge-pddocuments :docs [pddoc1 pddoc2 pddoc3] :output "output.pdf")

Does that help?

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Conaws · 2016-05-19T23:42:43Z

brilliant

alanmarazzi · 2018-08-01T14:39:38Z

I'm trying to read a pdf in, split it with split-pdf and then write it to disk with merge-pddocuments in this way:

(pdf-split/merge-pddocuments
  :docs (pdf-split/split-pdf :input path :start 1 :end 4)
  :output "test.pdf")

But I get this error, full stacktrace below:

Unhandled java.io.IOException
   COSStream has been closed and cannot be read. Perhaps its enclosing
   PDDocument has been closed?

            COSStream.java:   77  org.apache.pdfbox.cos.COSStream/checkClosed
            COSStream.java:  125  org.apache.pdfbox.cos.COSStream/createRawInputStream
            COSWriter.java: 1203  org.apache.pdfbox.pdfwriter.COSWriter/visitFromStream
            COSStream.java:  383  org.apache.pdfbox.cos.COSStream/accept
            COSObject.java:  158  org.apache.pdfbox.cos.COSObject/accept
            COSWriter.java:  522  org.apache.pdfbox.pdfwriter.COSWriter/doWriteObject
            COSWriter.java:  460  org.apache.pdfbox.pdfwriter.COSWriter/doWriteObjects
            COSWriter.java:  444  org.apache.pdfbox.pdfwriter.COSWriter/doWriteBody
            COSWriter.java: 1099  org.apache.pdfbox.pdfwriter.COSWriter/visitFromDocument
          COSDocument.java:  419  org.apache.pdfbox.cos.COSDocument/accept
            COSWriter.java: 1370  org.apache.pdfbox.pdfwriter.COSWriter/write
            COSWriter.java: 1257  org.apache.pdfbox.pdfwriter.COSWriter/write
           PDDocument.java: 1267  org.apache.pdfbox.pdmodel.PDDocument/save
NativeMethodAccessorImpl.java:   -2  sun.reflect.NativeMethodAccessorImpl/invoke0
NativeMethodAccessorImpl.java:   62  sun.reflect.NativeMethodAccessorImpl/invoke
DelegatingMethodAccessorImpl.java:   43  sun.reflect.DelegatingMethodAccessorImpl/invoke
               Method.java:  498  java.lang.reflect.Method/invoke
            Reflector.java:   93  clojure.lang.Reflector/invokeMatchingMethod
            Reflector.java:   28  clojure.lang.Reflector/invokeInstanceMethod
                 split.clj:   25  pdfboxing.split/pddocument->byte-array
                 split.clj:   21  pdfboxing.split/pddocument->byte-array
                 split.clj:   34  pdfboxing.split/pddocument->input-stream
                 split.clj:   32  pdfboxing.split/pddocument->input-stream
                  core.clj: 2745  clojure.core/map/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
              LazySeq.java:  130  clojure.lang.LazySeq/toArray
            ArrayList.java:  581  java.util.ArrayList/addAll
     PDFMergerUtility.java:  215  org.apache.pdfbox.multipdf.PDFMergerUtility/addSources
                 split.clj:   41  pdfboxing.split/merge-pddocuments
                 split.clj:   36  pdfboxing.split/merge-pddocuments
               RestFn.java:  457  clojure.lang.RestFn/invoke
                      REPL:   11  pdfparse.core/eval6654
                      REPL:   11  pdfparse.core/eval6654
             Compiler.java: 7062  clojure.lang.Compiler/eval
             Compiler.java: 7025  clojure.lang.Compiler/eval
                  core.clj: 3206  clojure.core/eval
                  core.clj: 3202  clojure.core/eval
                  main.clj:  243  clojure.main/repl/read-eval-print/fn
                  main.clj:  243  clojure.main/repl/read-eval-print
                  main.clj:  261  clojure.main/repl/fn
                  main.clj:  261  clojure.main/repl
                  main.clj:  177  clojure.main/repl
               RestFn.java: 1523  clojure.lang.RestFn/invoke
    interruptible_eval.clj:   87  clojure.tools.nrepl.middleware.interruptible-eval/evaluate/fn
                  AFn.java:  152  clojure.lang.AFn/applyToHelper
                  AFn.java:  144  clojure.lang.AFn/applyTo
                  core.clj:  657  clojure.core/apply
                  core.clj: 1965  clojure.core/with-bindings*
                  core.clj: 1965  clojure.core/with-bindings*
               RestFn.java:  425  clojure.lang.RestFn/invoke
    interruptible_eval.clj:   85  clojure.tools.nrepl.middleware.interruptible-eval/evaluate
    interruptible_eval.clj:   55  clojure.tools.nrepl.middleware.interruptible-eval/evaluate
    interruptible_eval.clj:  222  clojure.tools.nrepl.middleware.interruptible-eval/interruptible-eval/fn/fn
    interruptible_eval.clj:  190  clojure.tools.nrepl.middleware.interruptible-eval/run-next/fn
                  AFn.java:   22  clojure.lang.AFn/run
   ThreadPoolExecutor.java: 1149  java.util.concurrent.ThreadPoolExecutor/runWorker
   ThreadPoolExecutor.java:  624  java.util.concurrent.ThreadPoolExecutor$Worker/run
               Thread.java:  748  java.lang.Thread/run

dotemacs · 2018-08-01T14:52:36Z

Looking at your code:

(pdf-split/merge-pddocuments
  :docs (pdf-split/split-pdf :input path :start 1 :end 4)
  :output "test.pdf")

What does the argument to :docs look like?

I'm asking because looking at the discussion above, there is this example:

(merge-pddocuments :docs [pddoc1 pddoc2 pddoc3] :output "output.pdf")

Which looks like the argument to :docs should be a vector.

Is your result of

(pdf-split/split-pdf :input path :start 1 :end 4)

a vector?

I can see that the docstring talks of a list here:

https://github.com/dotemacs/pdfboxing/blob/master/src/pdfboxing/split.clj#L35

So see which one is applicable to you and let me know. Because this might be a case where I might need to update the docstring or the code depending on what you find out.

Thanks

alanmarazzi · 2018-08-02T06:10:28Z

It's a vector:

=> (def s (pdf-split/split-pdf :input path :start 1 :end 4))
=> (type s)
clojure.lang.PersistentVector

I'm getting the same error with:

(pdf-split/merge-pddocuments
  :docs (apply list (pdf-split/split-pdf :input path :start 1 :end 4))
  :output "test.pdf")

This is how the list looks:

=> (apply list s)
(#object[org.apache.pdfbox.pdmodel.PDDocument 0x2932d27f "org.apache.pdfbox.pdmodel.PDDocument@2932d27f"] #object[org.apache.pdfbox.pdmodel.PDDocument 0x7ce0fee0 "org.apache.pdfbox.pdmodel.PDDocument@7ce0fee0"] #object[org.apache.pdfbox.pdmodel.PDDocument 0x3aa4ccc1 "org.apache.pdfbox.pdmodel.PDDocument@3aa4ccc1"] #object[org.apache.pdfbox.pdmodel.PDDocument 0x719b3937 "org.apache.pdfbox.pdmodel.PDDocument@719b3937"])

This is a ~20MB PDF with more than 40,000 pages if it might be an issue

dotemacs · 2018-08-02T07:34:18Z

Can you see if the

(pdf-split/merge-pddocuments
  :docs [pddoc1 pddoc2 pddoc3]
  :output "test.pdf")

will work if you supply any other documents?

And can you see if you can merge documents that are split, saved to the disk first?

Basically, just trying to see where the issue could be.

alanmarazzi · 2018-08-02T07:49:33Z

Exact same error with another PDF with both a vector and a list. It looks like it's trying to get to the PDF somehow wich is closed

dotemacs · 2018-08-02T08:30:47Z

Exact same error with another PDF with both a vector and a list.

OK.

It looks like it's trying to get to the PDF somehow wich is closed

Yea.

I won't be able to have a look at this issue this week.
I'd appreciate if you could at least create a new issue so that I could track it.
But a PR with a fix would be even beter (hint, hint :) ).

Thanks

alanmarazzi · 2018-08-02T08:41:53Z

Not sure I'll be able to work on it unfortunately. I'll see what I can do

Conaws closed this as completed May 19, 2016

alanmarazzi mentioned this issue Aug 2, 2018

Issues with merge-pddocuments #46

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Working with split pdfs #26

Working with split pdfs #26

Conaws commented May 14, 2016 •

edited

dotemacs commented May 14, 2016

Conaws commented May 15, 2016

Conaws commented May 15, 2016

dotemacs commented May 16, 2016

Conaws commented May 19, 2016

dotemacs commented May 19, 2016

Conaws commented May 19, 2016

alanmarazzi commented Aug 1, 2018

dotemacs commented Aug 1, 2018

alanmarazzi commented Aug 2, 2018 •

edited

dotemacs commented Aug 2, 2018

alanmarazzi commented Aug 2, 2018

dotemacs commented Aug 2, 2018

alanmarazzi commented Aug 2, 2018

Working with split pdfs #26

Working with split pdfs #26

Comments

Conaws commented May 14, 2016 • edited

dotemacs commented May 14, 2016

Conaws commented May 15, 2016

Conaws commented May 15, 2016

dotemacs commented May 16, 2016

Conaws commented May 19, 2016

dotemacs commented May 19, 2016

Conaws commented May 19, 2016

alanmarazzi commented Aug 1, 2018

dotemacs commented Aug 1, 2018

alanmarazzi commented Aug 2, 2018 • edited

dotemacs commented Aug 2, 2018

alanmarazzi commented Aug 2, 2018

dotemacs commented Aug 2, 2018

alanmarazzi commented Aug 2, 2018

Conaws commented May 14, 2016 •

edited

alanmarazzi commented Aug 2, 2018 •

edited