Debenu Quick PDF Library - PDF SDK Community Forum : Compare PDFs

Compare PDFs : as i've written:Remove all...

Wed, 25 Nov 2015 22:30:08 +0000

Author: Ingo
Subject: 3191
Posted: 25 Nov 15 at 10:30PM

as i've written:

Remove all stuff and start again small with LoadFromString, SelectPage, ExtractPage, ...

If this run than step by step go on...

Cheers, Ingo

Compare PDFs : Ingo,I only added the FlattenPDF...

Wed, 25 Nov 2015 22:03:35 +0000

Author: tbean
Subject: 3191
Posted: 25 Nov 15 at 10:03PM

Ingo,

I only added the FlattenPDF call after I encountered the problem with no field data being found for a couple of documents like the one I uploaded. When we received this document it was fillable and I thought maybe that was the reason no field data was found.

The C# operator += is used to append the data of the variable on the right to the variable on the left. It is equivalent to "pdfText = pdfText + pdfLibrary.GetPageText(0);".

Regards,

Tom

Compare PDFs : Hi Tom,why you're doing FlattenPDF...

Wed, 25 Nov 2015 20:24:26 +0000

Author: Ingo
Subject: 3191
Posted: 25 Nov 15 at 8:24PM

Hi Tom,

why you're doing FlattenPDF before the LoadFromString?

I think this won't work...

Is the += okay in these programming language?

pdfText += pdfLibrary.GetPageText(0);

You should make your function smaller getting a better overview and try again.

Try textextraction first without the other stuff.

Only LoadFromString, SelectPage and Extraction ...

Cheers, Ingo

Compare PDFs : Ingo,pdfData is a byte array...

Tue, 24 Nov 2015 21:47:44 +0000

Author: tbean
Subject: 3191
Posted: 24 Nov 15 at 9:47PM

Ingo,

pdfData is a byte array with the contents of the PDF. I get the PDF data from our database and use LoadString() to load it into the PDFLibrary, so, it's equivalent to LoadFromFile().

Regards,

Tom

Compare PDFs : Hi Tom,i don't know the language...

Tue, 24 Nov 2015 21:14:06 +0000

Author: Ingo
Subject: 3191
Posted: 24 Nov 15 at 9:14PM

Hi Tom,

i don't know the language but i think the problem is already at the beginning.

What's inside pdfData? How and where you get these content?

In Pascal/Delphi you'll need something similar to this one:

// ...

try

QP := TDebenuPDFLibrary1114.Create;

try

ret1 := QP.UnlockKey'your_reg_key');

ret2 := QP.LoadFromFile(FName.Text, '');

// ...

Perhaps the other guys here can better give better help?

Cheers, Ingo

Compare PDFs : Ingo,My code is below.Tom---...

Tue, 24 Nov 2015 21:03:53 +0000

Author: tbean
Subject: 3191
Posted: 24 Nov 15 at 9:03PM

Ingo,

My code is below.

Tom

----------------------------

public static bool GetPDFContent(byte[] pdfData, ref byte[] pdfContent, ref string pdfText)

{

(pdfData.Length > 0)

{

try

{

ClearPDFLibrary();

pdfContent = new byte[0];

pdfText = string.Empty;

byte[] pageBytes;

pdfData = FlattenPDF(pdfData);

// Load PDF Document

pdfLibrary.LoadFromString(pdfData, "");

// if the PDF has no fonts, it is an image only PDF

if (pdfLibrary.HasFontResources() == 0)

{

return false;

}

int documentId = pdfLibrary.SelectedDocument(); // get the document id

int count = pdfLibrary.PageCount();

int index = 1;

while (index <= count)

{

int newDocumentId = pdfLibrary.NewDocument(); // create new document (has an empty page)

pdfLibrary.CopyPageRanges(documentId, index.ToString()); // copy page to new document

// delete the empty page

pdfLibrary.DeletePages(1, 1);

pdfLibrary.SelectPage(1);

pdfLibrary.SelectContentStream(1);

// get the content of each page and append them to pageBytes

pageBytes = pdfLibrary.GetContentStreamToString();

Array.Resize(ref pdfContent, pdfContent.Length + pageBytes.Length);

Buffer.BlockCopy(pageBytes, 0, pdfContent, pdfContent.Length - pageBytes.Length, pageBytes.Length);

// get the text of each page and concatenate them to pdfText

pdfText += pdfLibrary.GetPageText(0);

// remove the new document

pdfLibrary.RemoveDocument(newDocumentId);

++index;

}

// remove the original document

pdfLibrary.RemoveDocument(documentId);

}

catch (Exception ex)

{

ExceptionLog exceptionLog = new ExceptionLog(ERCPDFApplication, ERCPDFUser, ex);

exceptionLog.Commit();

return false;

}

return true;

}

Edited by tbean - 24 Nov 15 at 9:09PM

Compare PDFs : Hi Tom,there's no problem...

Tue, 24 Nov 2015 20:46:21 +0000

Author: Ingo
Subject: 3191
Posted: 24 Nov 15 at 8:46PM

Hi Tom,

there's no problem extracting the textcontent.

The extract starts with "CERTIFICATE OF LIABILITY INSURANCE".

Formfields will be extracted, too.

You can see it at content like this: "AUTOMOBILE LIABILITY X".

I've checked the file with my tool.

The pdf was a form and after filled out it was flattened.

But still there's one real formfield... Strange?

But you're telling us that you can't extract the textcontent and this shouldn't happen. Please post your code here. You should start with creating the instance und you should end with freeing the instance. I'm pretty sure that here's somebody telling you where's something wrong with the code ;-)

Cheers, Ingo

Compare PDFs : Ingo,I just uploaded it again,...

Mon, 23 Nov 2015 21:31:11 +0000

Author: tbean
Subject: 3191
Posted: 23 Nov 15 at 9:31PM

Ingo,

I just uploaded it again, now the link is: http://www.filedropper.com/pdf_8

Tom

Compare PDFs : Hi Tom,link doesn't work.Cheers,...

Mon, 23 Nov 2015 21:17:47 +0000

Author: Ingo
Subject: 3191
Posted: 23 Nov 15 at 9:17PM

Hi Tom,

link doesn't work.

Cheers, Ingo

Compare PDFs : Ingo,I tried the link today...

Wed, 18 Nov 2015 16:46:47 +0000

Author: tbean
Subject: 3191
Posted: 18 Nov 15 at 4:46PM

Ingo,

I tried the link today and it didn't work so I uploaded the file again.

Please try it now and you should be able to download the file.

Thanks,

Tom