Clovis,
Thanks a lot :)
I will have to follow this solution if there is no alternative. The problem
is that if I am extracting text of 500 or 600 pages PDF, that will consume
much additional memory and time. In addition I guess it's only a special
case for latex books only.
Best regards ,
Hesham
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Included message :
just an idea from whom is not fluent in pdfbox nor PDF.
if you just want to know there is a space in between the letters and not
the amount of spaces, you can use your code to get character details and
then use extractText to get the words.
2016-03-17 7:20 GMT-03:00 Hesham G. <[email protected]>:
Andreas,
That is very helpful.
I can get the x location of each character using TextPosition.getX(), ex:
W: 102.88399
i: 114.18165
t: 117.660614
h: 121.55801
d: 133.09477
u: 140.3994
e: 147.60838
So to detect the space between the 2 words "With" & "due" should I make
subtraction calculations between X of the last letter(h) and the X of the
first letter (d) and if the number is large than normal then this is a
space? I think this way might be risky in the detection, or what?
Best regards ,
Hesham
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Included message :
Hi,
Frank van der Hulst <[email protected]> hat am 17. März 2016 um
08:34
geschrieben:
Spaces don't exist as characters in PDFs. To identify spaces, you have to
compare the X coordinates of adjacent characters against their widths.
That's not correct, spaces exist but in most cases pdf engines omit them
and
replace spaces by a splitted text with an appropriate positioning.
BTW, latex uses the same strategy. Here is a excerpt from your pdf:
[ (W) 55 (ith) -383 (due) -384 (r) 18 (egar) 18 (d) -383 (to) -383
(Article)
-384 (\(219\),) -416 (the) -384 (competent) -383 (authority) -383 (has)
-384
(the) -383 (right) ] TJ
The text is in between the braces and the numbers are used for horizontal
positioning.
BR
Andreas
On Thu, Mar 17, 2016 at 7:12 PM, Hesham G. <[email protected]>
wrote:
> Hello ,
>
> I have a PDF file created using Latex. I am trying to read and print
> all
> letters in that file using PDFBox, but when doing this all spaces in >
that
> file are ignored. Here is the code I am using:
> PDPage page = (PDPage)allPages.get( 0 );
> PDStream contents = page.getContents();
> if ( contents != null ) {
> PDFTextStripperProcessor pdfTextStripperProcessor = new
> PDFTextStripperProcessor();
> pdfTextStripperProcessor.processStream( page, page.findResources(),
> contents.getStream() );
> }
>
> public class PDFTextStripperProcessor extends PDFTextStripper {
> @Override
> public void processTextPosition( TextPosition text ) {
> System.out.println( text.getCharacter() );
> }
> }
>
> And you can check a one page file sample here to test it:
>
>
https://dl.dropboxusercontent.com/u/10111483/downloads/pdfbox/pdf_latex_spaces_ignored.pdf
>
> What is the cause of this issue please?
>
>
> Best regards ,
> Hesham
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