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Old 12-09-2022, 03:40 AM   #1
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Post Bulk-check ebook collection for edited XHTML files
I have a big collection of epub ebooks, in the thousands let's say. Most of them are retail (original), and some of them have been surreptitiously edited, after being bought, to add some text within the flow of the book to advertise some website or service (this is obviously very annoying when reading).
One way to know whether a book has been messed with is opening it with winrar and checking whether all the xhtml files in the "OEBPS/text" folder have been last edited at the same date and time - the files that show a different date and time are the ones that I'm targeting.
I'm looking for a way to bulk-check the whole collection, without having to check every single file. Is it possible?

Thank you.
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Old 12-09-2022, 09:52 AM   #2
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The OPF may have been tagged if the modification was done with an e-book aware tool.
eg
<dc:date opf:event="modification">2022-12-09</dc:date>
As usual, these take on different forms, but are usually obvious to the human reading the code.
I guess you could build a code library of the variations for your check tool.
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Old 01-19-2023, 04:40 AM   #3
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I know this is an old question, but it seemed interesting from a programming perspective. I write a small application for it, try it.

(sorry for my bad english)
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Click image for larger version Name: 01.jpg Views: 120 Size: 58.5 KB ID: 199124  
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File Type: zip Epub_modification.zip (1.64 MB, 92 views)
Last edited by oldboys; 01-19-2023 at 04:42 AM.
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Old 01-19-2023, 09:05 AM   #4
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Wow, it works. Thank you very much for the great work!
(I got a lot of "epub metadata read error", not sure exactly what that means)
Last edited by 1v4n0; 01-19-2023 at 09:08 AM.
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Old 01-19-2023, 01:44 PM   #5
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(I got a lot of "epub metadata read error", not sure exactly what that means)

It cannot read the metadata of the given epub
All kidding aside, check the epub file with Sigil or use the "Add Folder" or "Add Folder with Subfolders" menu items.

I'm glad I could help
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Old 11-22-2023, 03:12 AM   #6
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Quote:
Originally Posted by theducks View Post
The OPF may have been tagged if the modification was done with an e-book aware tool.
eg
<dc:date opf:event="modification">2022-12-09</dc:date>
As usual, these take on different forms, but are usually obvious to the human reading the code.
I guess you could build a code library of the variations for your check tool.
Sorry for the gravedigging. Do you think there is a way to bulk-check the OPF files in a whole collection?
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Old 11-22-2023, 06:54 AM   #7
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