Inserting isbn into content file

James_Wilde · 12-09-2010, 05:02 PM

Is there any way in Calibre to add the isbn to the content file, as the unique identifier?

Manichean · 12-09-2010, 05:41 PM

What do you mean by "content file"? If the output format contains a metadata field for ISBN and there is an ISBN in the book metadata, it should be written already.

James_Wilde · 12-10-2010, 02:17 PM

In the content.opf file there is a field called unique-identifier, where it is recommended that one put the isbn. There is also another field named identifier id, which should also contain the isbn.

Actually anything unique will do, but the only thing that is certain is the isbn.

kovidgoyal · 12-10-2010, 02:23 PM

ISBN's are very far from being unique, you should never use an isbn as a unique identifier. Instead, do as calibre does ad insert it as a nomal dc:identifier with type ISBN

chaley · 12-10-2010, 02:25 PM

Calibre puts
<dc:identifier opf:scheme="ISBN">
and
<dc:identifier id="uuid_id" opf:scheme="uuid">
into content.opf. It also includes the entry
<package xmlns="http://www.idpf.org/2007/opf" version="2.0" unique-identifier="uuid_id">
which if I understand correctly, is telling epub clients that the uuid is indeed a unique ID. This is what I want, because I actively remove ISBNs, making them useless as an ID (for me).

James_Wilde · 12-11-2010, 10:14 AM

Quote:

Originally Posted by kovidgoyal

ISBN's are very far from being unique, you should never use an isbn as a unique identifier. Instead, do as calibre does ad insert it as a nomal dc:identifier with type ISBN

And how do I insert it as a normal dc:identifier in calibre?

kovidgoyal · 12-11-2010, 10:49 AM

specify it in the books metadata

James_Wilde · 12-11-2010, 11:52 AM

OK, thanks. Wasn't sure if that would work other than in the private metadata of my laptop collection, which I maintain in Calibre.

12-09-2010, 05:02 PM	#1
James_Wilde Guru Posts: 802 Karma: 4727110 Join Date: Aug 2010 Location: Sweden Device: Iriver Story	Inserting isbn into content file Is there any way in Calibre to add the isbn to the content file, as the unique identifier?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[Old Thread] Extract ISBN from file name	ChristianQ	Calibre	59	12-09-2015 05:08 AM
Inserting a signature.	chrischance	Lounge	4	10-28-2010 02:27 PM
content server file location	dchoe	Calibre	16	09-02-2010 11:45 AM
cleaning the content.opf file	Adjust	ePub	6	09-01-2010 05:54 PM
text file and table of content	skao	Calibre	1	04-09-2010 12:15 PM

12-09-2010, 05:41 PM	#2
Manichean Wizard Posts: 3,130 Karma: 91256 Join Date: Feb 2008 Location: Germany Device: Cybook Gen3	What do you mean by "content file"? If the output format contains a metadata field for ISBN and there is an ISBN in the book metadata, it should be written already.

12-10-2010, 02:17 PM	#3
James_Wilde Guru Posts: 802 Karma: 4727110 Join Date: Aug 2010 Location: Sweden Device: Iriver Story	In the content.opf file there is a field called unique-identifier, where it is recommended that one put the isbn. There is also another field named identifier id, which should also contain the isbn. Actually anything unique will do, but the only thing that is certain is the isbn.

12-10-2010, 02:23 PM	#4
kovidgoyal creator of calibre Posts: 43,853 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	ISBN's are very far from being unique, you should never use an isbn as a unique identifier. Instead, do as calibre does ad insert it as a nomal dc:identifier with type ISBN

12-10-2010, 02:25 PM	#5
chaley Grand Sorcerer Posts: 11,741 Karma: 6997045 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	Calibre puts <dc:identifier opf:scheme="ISBN"> and <dc:identifier id="uuid_id" opf:scheme="uuid"> into content.opf. It also includes the entry <package xmlns="http://www.idpf.org/2007/opf" version="2.0" unique-identifier="uuid_id"> which if I understand correctly, is telling epub clients that the uuid is indeed a unique ID. This is what I want, because I actively remove ISBNs, making them useless as an ID (for me).

12-11-2010, 10:49 AM	#7
kovidgoyal creator of calibre Posts: 43,853 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	specify it in the books metadata

12-11-2010, 11:52 AM	#8
James_Wilde Guru Posts: 802 Karma: 4727110 Join Date: Aug 2010 Location: Sweden Device: Iriver Story	OK, thanks. Wasn't sure if that would work other than in the private metadata of my laptop collection, which I maintain in Calibre.

Advert

Advert