Inspiring

Question

How can get total page of pdf file?

Forum|Forum|6 years ago
October 16, 2019
4 replies
1768 views

var strFile="c://test.pdf"; // 50 pages

while(true)
{
try {
pdfOptions.pageToOpen=iPage;
doc = app.open(strFile); 
//backup pdf
var dot = doc.name.lastIndexOf('.');
var newName = doc.name.substring(0, dot) +"_p" +iPage +".pdf";
targetFile = new File( srcFolderStr + '/' + newName );;
var pdfsaveoptions = new PDFSaveOptions();
pdfsaveoptions.pDFPreset=""; 
doc.saveAs(targetFile,pdfsaveoptions);
doc.close(SaveOptions.DONOTSAVECHANGES); 

iPage=iPage+1;
if(iPage>100) break;
}
catch(e) {
break;
}
}

I want open each page of pdf.

I want stop when it is last page.

How can get total page of pdf file?

Scripting

This topic has been closed for replies.

Community Expert

Community Expert

You can check PDF files directly.

Here is a sample code.

alert(getPageLength(File("~/Desktop/test.pdf")))


function getPageLength(f){
	var tg = /<<\/Count\s(\d+)/;
	var count = /<<\/Type\/Page\/Parent/;
	var count_2 = /\/Type\s\/Page\s/;
	var count_3 = /\/StructParents\s\d+.*\/Type\/Page>>/;
	var tg2 = /<<\/Linearized\s.+\/N\s(\d+)\/T\s.+>>/; //add target "Linearized PDF Document Structure"
	var tg3 = /\/Type\/Pages/; 
	var tg4 = /\/Count\s(\d+)/;
	var tg5 = /\/Type\/Pages\/Count\s(\d+)/;
	var len = 0;
	var num = 0;

	if(f.open('r')){
		while(!f.eof){
			wd = f.readln();
			if (tg.test(wd)) return RegExp.$1 - 0;
			if (tg2.test(wd)) return RegExp.$1 - 0;
			if (count.test(wd)) len++;
			if (count_2.test(wd)) len++;
			if (count_3.test(wd)) len++;
			if (tg5.test(wd)){
				num = RegExp.$1 - 0;
				if (len<num) len = num;
				} else if (tg3.test(wd)){
					wd = f.readln();
					if (tg4.test(wd)){
						num = RegExp.$1 - 0;
						if (len<num) len = num;
						}
					}
			}
		}
	if(len>0) return len;
	return null;
	}

daitranthanhoaAuthor

Inspiring

It return not correct page number.

I try pdf 39 page, but it return len is 78.

I debug value of num is 39.

Community Expert

Community Expert

In some cases, We can't count pages correctly.

If you can manage PDF files, linearize it and we only search "Linearized" operator.

Inspiring

Salut!

Tous les scripteurs ont été confrontés à ce même problème (Il ne faut pas faire de concurrence à Accrobate),
c'est pourquoi il faut être curieux et observateur pour se sortir des situations délicates.

-1 Ton script est pour Illustrator oui mais il est plein d'erreurs et ne peut fonctionner...

-2 Carlos t'as précisé que si iPage dépasse le nombre de pages du document pdf on retourne à la page 1 sans message d'erreur.

- 3 Ce que tu dois faire est de comparer chaque page (iPage) avec la page 1.

- 4 Si les 2 pages sont identiques on arrête le traitement.

Si tu n'y parviens pas je te donnerai une solution.

elleere

Test Screen Name

Legend

This is not using Acrobat, or any other Adobe code. It does not belong in the Adobe forums at all.

Test Screen Name

Legend

Oh, I may be mistaken, because PDFSaveOptions is found in C# libraries. It's also in Illustrator scripting, so this may well be the perfect, and only, forum for the question. if so, why not just try pages until an exception is raised...?

Community Expert

Community Expert

it's Javascript for Illustrator. Getting last page it's not that easy, trying to open a page beyond the upper limit does not raise any errors, instead it just opens the first page.

Inspiring

Are you sure this is a Illustrator question?

I think you have to poste this question in the Acrobat forum.

Test Screen Name

Legend

I thought first this was the wrong forum, but although it concerns PDF, the JavaScript used is Illustrator. Unfortunately this in not an app I have programmed. Any ideas?