I need help - I can help - Extract text from PDF problem with "fi" and "fl"

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Extract text from PDF problem with "fi" and "fl"

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=2574
Printed Date: 04 Apr 26 at 7:52PM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: Extract text from PDF problem with "fi" and "fl"

Posted By: miguele
Subject: Extract text from PDF problem with "fi" and "fl"
Date Posted: 21 Mar 13 at 3:29PM

Hi,

I'm extracting text from PDF with Delphi XE and QuickPDF v.7. I've tried the v9.13 demo and the problem is the same. The PDF encoding id UTF-8. Language is Portuguese.

For the word:

Identifique

I get:

Identiﬁ que

I've checked the Ord for each char (it's between paranthesis) and it looks like this:

(32)I(73)d(100)e(101)n(110)t(116)i(105)ﬁ(64257) (32)q(113)u(117)e(101) (32)

This is coming out directly from QuickPDF library as follows:

QP.LoadFromFile(OpenDialog1.FileName,'');

PageCount := QP.PageCount();

for i:= 1 to PageCount + 1 do

begin

TextOutput:= TextOutput + ' ' + #10 + QP.ExtractFilePageText(OpenDialog1.FileName, '', i, 8);

end;

sl.Text:= TextOutput;

TextOutput is a Widestring.

Am I doing something wrong? This happens only for "fi" and "fl".

Thanks,

Miguel

Replies:

Posted By: miguele
Date Posted: 21 Mar 13 at 6:24PM

I've found that this issue only happens with PDF files generated by Adobe InDesign. It seems to be related with ligatures as this forum post describes:

http://forums.adobe.com/thread/792075 - http://forums.adobe.com/thread/792075

Any workaround for this?

Thanks

Posted By: AndrewC
Date Posted: 25 Mar 13 at 11:16PM

QPL 8.xx has support for extracting ligatures. We would need to see the file to see why the problem PDF to see why this is happening.

Andrew.