Add extra <dc:> metadata field

Agama · 08-08-2012, 02:37 PM

Can I write a plugin to add extra <dc:> fields to a book's metadata.

For example: <dc:Contributor opf:role="rps">[some value]</dc:contributor>

I've had a look at set_metadata in calibre\ebooks\metadata\meta.py but I can't see if this let's me do it.

kovidgoyal · 08-08-2012, 02:52 PM

You can write a replacement for the builtin epub metadata reader plugin that reads that field, but you have no way of ensuring that the field gets written to the database. calibre's metadata reading code does a lot of post processing on the input it gets from the metadata plugins, so it's unlikely that your custom metadata will survive.

Short answer: no.

08-08-2012, 02:37 PM	#1
Agama Guru Posts: 776 Karma: 2751519 Join Date: Jul 2010 Location: UK Device: PW2, Nexus7	Add extra <dc:> metadata field Can I write a plugin to add extra <dc:> fields to a book's metadata. For example: <dc:Contributor opf:role="rps">[some value]</dc:contributor> I've had a look at set_metadata in calibre\ebooks\metadata\meta.py but I can't see if this let's me do it.

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08-08-2012, 02:52 PM	#2
kovidgoyal creator of calibre Posts: 43,844 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	You can write a replacement for the builtin epub metadata reader plugin that reads that field, but you have no way of ensuring that the field gets written to the database. calibre's metadata reading code does a lot of post processing on the input it gets from the metadata plugins, so it's unlikely that your custom metadata will survive. Short answer: no.

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