MobileRead Forums - View Single Post - Yes/No custom column to automatically show whether a book is in EPUB 3 format?

ShellShock · 12-16-2023, 06:42 AM

Is this possible? The column would be automatically updated when adding a new book to Calibre, or when converting it in the Calibre book editor from EPUB 2 to EPUB 3.

I have recently discovered that Calibre stores series numbers as integers in EPUB 3 e.g.,

Code:

<opf:meta refines="#id-2" property="group-position">4</opf:meta>

but uses floats for EPUB 2, e.g.,

Code:

<meta name="calibre:series_index" content="4.0"/>

I prefer the integer format when it really is an integer (and not e.g., 4.1). Thus I am converting my library from EPUB 2 to 3, and it would be handy to easily tell which books are already EPUB 3.

Thanks

12-16-2023, 06:42 AM	#1
ShellShock Wizard Posts: 1,178 Karma: 2431850 Join Date: Sep 2008 Device: IPad Mini 2 Retina	Yes/No custom column to automatically show whether a book is in EPUB 3 format? Is this possible? The column would be automatically updated when adding a new book to Calibre, or when converting it in the Calibre book editor from EPUB 2 to EPUB 3. I have recently discovered that Calibre stores series numbers as integers in EPUB 3 e.g., Code: <opf:meta refines="#id-2" property="group-position">4</opf:meta> but uses floats for EPUB 2, e.g., Code: <meta name="calibre:series_index" content="4.0"/> I prefer the integer format when it really is an integer (and not e.g., 4.1). Thus I am converting my library from EPUB 2 to 3, and it would be handy to easily tell which books are already EPUB 3. Thanks