Undefined map and font notices about pdftotext

[christian-vigh-phpclasses]

Hi Anthony, Thanks for your reporting, your proposals make perfect sense. Would it be possible for you to send me the pdf file that generated such notices ? (my email is : [email protected]). First, because I suspect that the origin of the warning at line #5517 is more complex than that, and should not be solved by calling the isset() function (I said �should not be solved�, but it may happen that this could be finally the right solution!). To further explain the reason why, I have left some parts elsewhere in the code where I do not perform any checkings at all, except for the cases I already encountered so far, that I�m holding for �truths�. The idea behind not checking unusual cases is that the PDF format is so versatile and can take so many different forms that I cannot predict any possible case. So, when such an unpredicted case happens to a user, a warning is issued. With that warning and the corresponding PDF file, I can investigate the problem. Most of the time, this helped me discover new ways of building PDF parts, which I was unaware of, or were too poorly documented by Adobe to notice them. As a conclusion, this helped me enhance the class and provide more reliable results. The second reason why I would like your PDF sample is that it contains CID fonts, and I�m badly lacking example PDF files using CID fonts. CID (�Character ID�) fonts are internal fonts developed by Adobe long before the Unicode standard emerged. Characters defined in a CID font are just glyphs containing instructions on how to draw them, but even Adobe itself is not aware of which Unicode character correspond to a given CID character entry ! using Acrobat Reader, you cannot perform searches on text written using CID fonts, because it does not know which character is behind each glyph ; and if you copy and paste such a text in Notepad or Word, you will only see a series of rectangles. I�m trying to implement correspondence tables for some CID fonts (ie, character id <=> Unicode character) but it�s a tough task because I do have not enough examples. Regarding warnings at lines #4720 and #4724, your proposal is correct and will be integrated in version 1.3.8. And yet again, a PDF sample would be highly welcome for testing this case ! Many thanks for your proactive help ! With kind regards, Christian.

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_____ De : Anthony Bolognese [mailto:[email protected]] Envoyé : vendredi 23 décembre 2016 21:41 À : christian-vigh-phpclasses/PdfToText Cc : Subscribed Objet : [christian-vigh-phpclasses/PdfToText] Undefined map and font notices (#12) Version : 1.3.7 Notice: Undefined variable: map in PdfToText.phpclass on line 4720 Notice: Undefined variable: map in PdfToText.phpclass on line 4724 Notice: Undefined index: fonts in PdfToText.phpclass on line 5517 Warning: Invalid argument supplied for foreach() in PdfToText.phpclass on line 5517 proposed change #1 <#1> $file = PdfToText::$CIDTablesDirectory . DIRECTORY_SEPARATOR . $map_name . '.cid' ; change to: $map = array(); $file = PdfToText::$CIDTablesDirectory . DIRECTORY_SEPARATOR . $map_name . '.cid' ; proposed change #2 <#2> foreach ( $page_contents [ 'fonts' ] as $font_name => $font_object ) change to: `if ( ! isset ( $page_contents [ 'fonts' ] ) ) continue ; foreach ( $page_contents [ 'fonts' ] as $font_name => $font_object )` � You are receiving this because you are subscribed to this thread. Reply to this email directly, view it <#12> on GitHub, or mute <https://github.com/notifications/unsubscribe-auth/ARM8agQqHqD9tcUCeCzVg3_fX sun3WlRks5rLDH0gaJpZM4LVDfs> the thread. <https://github.com/notifications/beacon/ARM8am1jQROn3-LadSvipeJRmygEjiSYks5 rLDH0gaJpZM4LVDfs.gif>

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[tbolognese]

Christian,
Thank you for building this awesome pdf extraction class. Well done!

I regret that I can't share the PDF sample with you. It contains proprietary information that I signed a Non Disclosure Agreement for. I truly wish I could share it so you can continue to improve the project. Unfortunately I can not. If I can help in another way please let me know!

Kind Regards,
Anthony

[christian-vigh-phpclasses]

Hi Anthony, Thanks ! I understand that you are covered by a NDA so there are not many options. The only one that I see is that your customer generates the same kind of document with anonymized (dummy) data, but if he�s not himself the owner (generator) of the document, because the document comes from a third party for example, it won�t be possible. And I don�t think he would agree to sign an NDA with me ! Anyway, I will implement your suggested corrections with version 1.3.8 this week-end, so that it will help you go further. Meanwhile, one thing that might help me is that you edit the PDF file using notepad or notepad++ (if you�re running on Windows) then : - Search for the string /Encoding - It should be followed by either /WinAnsiEncoding, /Unicode or /Identity-H. If it�s followed by a different �/keyword� option, I would be interested in knowing what this keyword is (for example, /Encoding /some_keyword_not_listed_here) I also would like to know, if possible, the written language of the document, especially if you find the string �/Encoding� followed by �/Identity-H�. But don�t spend too much time on it. Anyway, if you encounter any further issue with text extraction, please feel free to contact me. With kind regards, Christian.

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_____ De : Anthony Bolognese [mailto:[email protected]] Envoyé : samedi 24 décembre 2016 00:01 À : christian-vigh-phpclasses/PdfToText Cc : christian-vigh-phpclasses; Comment Objet : Re: [christian-vigh-phpclasses/PdfToText] Undefined map and font notices (#12) Christian, Thank you for building this awesome pdf extraction class. Well done! I regret that I can't share the PDF sample with you. It contains proprietary information that I signed a Non Disclosure Agreement for. I truly wish I could share it so you can continue to improve the project. Unfortunately I can not. If I can help in another way please let me know! Kind Regards, Anthony � You are receiving this because you commented. Reply to this email directly, view <#12 (comment) nt-269054699> it on GitHub, or mute <https://github.com/notifications/unsubscribe-auth/ARM8ajolvw9TWZE35ojvmo6Nu wVMlK1Dks5rLFKngaJpZM4LVDfs> the thread. <https://github.com/notifications/beacon/ARM8ap8YIHiL2KoBqnxPoYWqf8Nk1HLmks5 rLFKngaJpZM4LVDfs.gif>

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[tbolognese]

Christian,
Merry Christmas!

So I checked the document in SublimeText and found the following line:

/Encoding /Identity-H/DescendantFonts[181 0 R]/Subtype/Type0>>

The document is written in English.

Let me know if I can do any more searching for you, I'm happy to help!

Kind Regards,
Anthony

[tbolognese]

Sorry, I should have included the line above also. Here it is!

<</BaseFont/GHTXAC+Wingdings-Identity-H/Type/Font
/Encoding /Identity-H/DescendantFonts[181 0 R]/Subtype/Type0>>

Best,
Anthony

[christian-vigh-phpclasses]

Hello Anthony, Merry x-mas to you as well ! Thanks for your feedback, it does confirm that your pdf file is using non-far east language CID fonts. My current implementation regarding CID fonts could be described as several steps below �experimental�. I hope by the near future that I will be able to collect further information and sample files to figure out how this really strange thing works� With kind regards, Christian.

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_____ De : Anthony Bolognese [mailto:[email protected]] Envoyé : lundi 26 décembre 2016 14:19 À : christian-vigh-phpclasses/PdfToText Cc : christian-vigh-phpclasses; Comment Objet : Re: [christian-vigh-phpclasses/PdfToText] Undefined map and font notices (#12) Sorry, I should have included the line above also. Here it is! <</BaseFont/GHTXAC+Wingdings-Identity-H/Type/Font /Encoding /Identity-H/DescendantFonts[181 0 R]/Subtype/Type0>> Best, Anthony � You are receiving this because you commented. Reply to this email directly, view <#12 (comment) nt-269210738> it on GitHub, or mute <https://github.com/notifications/unsubscribe-auth/ARM8ak8TX4loJaOXVjc2Um8Nz btC0gH9ks5rL76xgaJpZM4LVDfs> the thread. <https://github.com/notifications/beacon/ARM8anRT4o4I76Q3le6aD7RKxnXYga7Wks5 rL76xgaJpZM4LVDfs.gif>

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