10-05-2010, 03:19 PM | #1 |
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Calibre Questions
I noticed that every time calibre 'opens' an epub file it seems to add calibre bookmarks. In essence it's changing the epub file on each inspection. Is there a way to first clean up all epub files removing content added by Calibre and other applications that do not belong in a clean ePub file, and then configure Calibre to not write anything into the ePub files again. This will also save write cycles when accessing content on a flash drive.
Also I noticed Calibre checks only the book name when adding files. Realizing that some books having the same title is quite common, could it be something that could be added easily? Last but not least, can Calibre be linked to Sigil and ePubCheck to make it part of a kind of eBook development suite? |
10-05-2010, 03:21 PM | #2 |
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Welcome to MobileRead, LGN
You'll get answers soon.... |
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10-05-2010, 03:39 PM | #3 | |||
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Quote:
Quote:
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Last edited by Starson17; 10-05-2010 at 03:43 PM. |
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10-05-2010, 06:41 PM | #4 |
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Thanks for taking the time to answer Starson17.
Calibre does get the meta data but when adding a book it purely handles on Title alone based on tests. While the title might be the same and authors and other meta data are different I just get the message that a book with the same title exists and asking me to add the new book anyway. This forces me to manually check each title. So the option you refer to is used at the time of adding the book. Regarding the changing of the ePub file every time you review the ePub, is something that was totally unexpected until I noticed it today. I feel the more I change a file the more chances are that one hiccup could damage it. Also the info added is useless for all other applications than Calibre internal usage. When I save a file to disk, the information stays inside. I'll consider a feature request and remember not to use my collection on a flash drive. Thanks for the suggestion about Sigil and ePubCheck. I think Calibre is the best eBook manager around and maybe can be extended with a plugin to link to third party applications. Who knows If anyone has some other suggestions and maybe a tip how to 'clean' the calibre added information from ePubs it would be very welcome. Thanks again! |
10-05-2010, 07:32 PM | #5 |
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Open the epub with a zip program, delete META-INF\calibre_bookmarks.txt
Save back, then make the epub read-only. |
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10-05-2010, 09:59 PM | #6 | |
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Select the book in calibre then press T Click Explode ePub Delete META-INF\calibre_bookmarks.txt Click Rebuild ePub |
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10-05-2010, 10:14 PM | #7 | |
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I wanted a bit more automation, so I wrote the autosort/automerge option. When turned on, it will compare the author and then fuzzy match the title. If the author is the same and the title a close match to an existing book record, it will try to put the new format you are adding into the matching existing book record. If the format you are trying to add is already in the existing matching record, it will skip that format. If title matches and author does not match, it will create a new record for that format. The autosort/automerge option is found in Preferences|Import/Export|Adding Books|"If books with similar ..." It's most useful when adding large numbers of books with drag/drop where you do not want duplicates of the same book. |
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10-06-2010, 04:28 AM | #8 |
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dwanthy, completely forgot about that.
All these new feature, makes calibre too good LGN, whichever way you go, don't forget to then make the epub read-only. |
10-06-2010, 06:50 AM | #9 |
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@Starson17: Aah, that will be useful. I read it that it would merge books from the same author if other format. This will turn out to be helpful next time when adding books. Thanks man!
@dwanthny and Perkin: Yeah I could make the books read-only. I wish I have known earlier that Calibre actually changes a file every time you view it. The biggest problem might be that I need to do it manually for each book already added and to be added in the future. But it's definitely something to remember when making my own ePubs. Calibre could have used the (external) OPF file of the book to keep bookmarks for example. |
10-06-2010, 08:40 AM | #10 |
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The external OPF file is a new feature of this release so it was not available at the time. It could be worth requesting a change via the ticket system to do this - no idea if it would be favourably received or not. However any metadata change causes that file to be regenerated so how robust a way of doing it it would be I am not sure.
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10-06-2010, 09:11 AM | #11 |
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Personally, I'd rather keep bookmarks in the EPUB, not in a separate file. I don't want to handle two files, where one will do. I use Calibre for my personal reading library, not as part of a book development suite. I've got no problem with adding a button to individually or bulk remove all Calibre-specific bits of metadata stored in the EPUB(s), but I'd rather not go farther than that.
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10-06-2010, 12:03 PM | #12 |
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Another Calibre Question
Anyone know how to re-enable the merge or delete warnings? I clicked the "ignore in the future" check-box and have regretted it ever since. Thanks!
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10-06-2010, 12:29 PM | #13 |
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10-06-2010, 06:59 PM | #14 | |
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On the other hand I understand you when you say you don't want to handle two files. But eReaders don't use this bookmark, mine uses some internal folder/file to keep track on where you were. That said I still think Calibre is the best tool for eBook managment there is Thanks for the time and patience to answer. |
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10-06-2010, 07:01 PM | #15 |
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I agree with you. Having the book mark file inside the epub is well within the epub standard guidance. If you are developing books doesn't running epub-fix (among other things) eliminate the book mark file?
Last edited by DoctorOhh; 10-06-2010 at 07:06 PM. |
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