Automatic cover page - based on metadata from content.opf (EPUB/AZW3)

dxcore35 · 01-08-2020, 11:59 PM

Hello it is possible to use metadata field from content.opf:

<dc:title>Example</dc:title>
<dc:creator opf:role="aut" opf:file-as="AUTHOR NAME">AUTHOR NAME</dc:creator>
<dc:description>Example text</dc:title>```

And use them in html file?

<body>

<book_title> %(title) </book_title>
<book_autor> %(creator) </book_autor>
<book_desk> %(description) </book_desk>

</body>

How to refer to this metadata?

JSWolf · 01-09-2020, 03:25 PM

Sorry, but you cannot do what you want.

dxcore35 · 01-10-2020, 01:25 AM

Do you know any details about other solution?
Or can you elaborate why it is not possible?

Thanks a lot!

Doitsu · 01-10-2020, 06:12 AM

Quote:

Originally Posted by dxcore35

[...] is it possible to use metadata field from content.opf:

Theoretically, it'd possible to parse content.opf with an XMLHttpRequest, however, this would only work with epub3 files and only if the epub app supports Javascript.

Have you tried the Calibre cover generator (Edit metadata > Generate cover)?

dxcore35 · 01-10-2020, 07:51 AM

I was thinking to create fully independent and automatic cover template. Without any external tools. Put simple reference from the metadata file into html... After that simply changing the metadata, the change should be visible in cover as well, because it is using only reference to field from metadata file not "hardcoded" string.

Doitsu · 01-10-2020, 08:37 AM

Quote:

Originally Posted by dxcore35

I was thinking to create fully independent and automatic cover template. Without any external tools. Put simple reference from the metadata file into html... After that simply changing the metadata, the change should be visible in cover as well, because it is using only reference to field from metadata file not "hardcoded" string.

You can't modify data in (X)HTML files at runtime without JavaScript.

DaleDe · 01-10-2020, 12:16 PM

Even if you could make it work, metadata is part of the head element, not the body.

Dale

hobnail · 01-10-2020, 02:37 PM

Not entirely automated but there's the Calibre plugin, Generate Cover:

https://www.mobileread.com/forums/sh...e+cover+plugin

The 3rd tab in its Options window named Contents has a checkbox Custom Text. Now all you need is an easy way to copy the desired metadata so that you can paste it there.

01-08-2020, 11:59 PM	#1
dxcore35 Member Posts: 22 Karma: 10 Join Date: Mar 2018 Device: Kindle Voyage	Automatic cover page - based on metadata from content.opf (EPUB/AZW3) Hello it is possible to use metadata field from content.opf: <dc:title>Example</dc:title> <dc:creator opf:role="aut" opf:file-as="AUTHOR NAME">AUTHOR NAME</dc:creator> <dc:description>Example text</dc:title>``` And use them in html file? <body> <book_title> %(title) </book_title> <book_autor> %(creator) </book_autor> <book_desk> %(description) </book_desk> </body> How to refer to this metadata?

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01-09-2020, 03:25 PM	#2
JSWolf Resident Curmudgeon Posts: 74,015 Karma: 129333114 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	Sorry, but you cannot do what you want.

01-10-2020, 01:25 AM	#3
dxcore35 Member Posts: 22 Karma: 10 Join Date: Mar 2018 Device: Kindle Voyage	Do you know any details about other solution? Or can you elaborate why it is not possible? Thanks a lot!

01-10-2020, 07:51 AM	#5
dxcore35 Member Posts: 22 Karma: 10 Join Date: Mar 2018 Device: Kindle Voyage	I was thinking to create fully independent and automatic cover template. Without any external tools. Put simple reference from the metadata file into html... After that simply changing the metadata, the change should be visible in cover as well, because it is using only reference to field from metadata file not "hardcoded" string.

01-10-2020, 12:16 PM	#7
DaleDe Grand Sorcerer Posts: 11,470 Karma: 13095790 Join Date: Aug 2007 Location: Grass Valley, CA Device: EB 1150, EZ Reader, Literati, iPad 2 & Air 2, iPhone 7	Even if you could make it work, metadata is part of the head element, not the body. Dale

01-10-2020, 02:37 PM	#8
hobnail Running with scissors Posts: 1,552 Karma: 14325282 Join Date: Nov 2019 Device: none	Not entirely automated but there's the Calibre plugin, Generate Cover: https://www.mobileread.com/forums/sh...e+cover+plugin The 3rd tab in its Options window named Contents has a checkbox Custom Text. Now all you need is an easy way to copy the desired metadata so that you can paste it there.