Detect Empty Pages

[Sudha_K]

Hi,

     I need to detect empty pages of pdf document.  if i use the concept of the below code its fail to me bcoz., document contains document name, date & time at bottom of the page.  How can i detect empty pages of pdf document using javascript or java? Can anyone help me...

for(var i=this.numPages-1;i>=0;i--)

{

    numWords = this.getPageNumWords(i);

   if(numWords == 0)

    {

          app.alert("Empty Pages");

    }

}

Thanks in advance,

Sudha K

[George_Johnson]

You can't do it with JavaScript, and whether you can do it with Java depends on which library you're using. It also depends on exactly what you mean by the term "empty". A page can contain text, graphics, or images, all of which may not be visible or appear to be visible. It's not a simple problem.

[Sudha_K]

Hi George,

     Thank you...

     In javascript, we can check that using preflight.  Can we call that preflight using java or anyother language??

     Could you guide me how to proceed with java?? I have attached sample blank pages for your reference.

    

- Sudha K

[try67]

You can run Preflight Profiles using JavaScript's preflight method of the Document object.

This is not really the place to discuss how to achieve it with Java. Try either the forum/mailing list for the specific library you're using or the Acrobat SDK forum.

[Sudha_K]

Ok thank you... I will check in javascript...

Can I call the acrobat script using java?? 

[Test Screen Name]

‌Are you trying to do this on a server?

[try67]

Can I call the acrobat script using java??

AFAIK, No.

[Sudha_K]

Hi,

     Not in server... I want to get the pdf page numbers for multiple pdfs and want to write it as report for both OS( Mac and PC).

    We can do this using applescript and javascript but it will run only in mac.  But I want to run on both OS.  So thought of to use java for both OS...

[try67]

Do you just want the number of pages in each file? It can be easily done with JS, using this command:

this.numPages

[Test Screen Name]

In Windows you can use the linkage between Visual Basic and Acrobat JavaScript ("JSObject") as described in the Acrobat SDK. This is the method for external scripting.

[Sudha_K]

Hi,

     Sorry for the late reply....

     I can get pdf page numbers using javascript.  Also can generate report with the help of applescript.  But I want it for both OS...

     I want to get the all page numbers of file and also empty page's page number of PDF File and need to write report csv for both OS (Window & Mac OSX).  Is it possible? Using scripting or script with java or any other scripting?

[Test Screen Name]

‌Page numbers on the page are just text. You can get text and text location, uding this to guess page numbers. There is no access to other page contents. Si you can detect pages without text but not blank pages.

[Sudha_K]

ok... can i write csv file using acrobat scripting???

[Test Screen Name]

I don't know. See what the docs say. I know nothing about XFA JavaScript except that it is different.

[Test Screen Name]

‌Sorry I mixed up my reply, forget XFA. But check what export options are documented.

[Test Screen Name]

‌ah wait - you don't want to export csv you want to write a file. No. But not a problem, write it from your VB environment.

[Sudha_K]

If I use VB, it will work for only Windonws is it right???  But I want to run the tool for both OS...  Can I use this for both OS???

I saw this link ... Can we use this for javascript??

http://stackoverflow.com/questions/11978407/java-scriptenginemanager-no-longer-works-with-mountain-l...

[Bernd Alheit]

With Acrobat Javascript you can create a Report document and save it.

[Sudha_K]

Can u tell me how to to that using acrobat scripting??

[Test Screen Name]

H‌ave you got the Acrobat JavaScript API document?

[Sudha_K]

yes I'm having...

[Bernd Alheit]

In the Javascript Reference look for the Report object.

[Sudha_K]

I have referred the reference and also I have tested the code given in tat pdf.  Its creating PDF file.  Report will create only PDF File?? Can we create CSV file??

[Bernd Alheit]

You can save the Report as a text file.

[Sudha_K]

Can you tell me how to do??