Table of Contents generation, Kindle to EPUB

johnbw · 10-27-2012, 11:45 AM

Is there a way to use the toc.ncx data embedded in Kindle (mobi) books to generate the EPUB Table of Contents?

My understanding of TOC generation when converting Kindle (mobi) ebooks to EPUB is that calibre uses 2 possible approaches:

Scan the structure of the mobi for chapter and other headings and build the TOC from these, or,
Detect an existing html TOC in the mobi and build the EPUB TOC from this

Well-formed Kindles include toc.ncx data that is used help navigate between sections, chapters etc, and to display tics on the progress bar. Is it possible to use this toc.ncx data instead of the above approaches to generate the EPUB TOC?
Thanks!

kovidgoyal · 10-27-2012, 12:35 PM

The order is reversed (2, then 1) and MOBI (as opposed to KF8) books do not support hierarchical table of contents in the ncx, so trying to generate the epub toc from the ncx would break badly on such books.

10-27-2012, 11:45 AM	#1
johnbw Agile eBooks Posts: 6 Karma: 10 Join Date: Aug 2011 Device: kindle	Table of Contents generation, Kindle to EPUB Is there a way to use the toc.ncx data embedded in Kindle (mobi) books to generate the EPUB Table of Contents? My understanding of TOC generation when converting Kindle (mobi) ebooks to EPUB is that calibre uses 2 possible approaches: Scan the structure of the mobi for chapter and other headings and build the TOC from these, or, Detect an existing html TOC in the mobi and build the EPUB TOC from this Well-formed Kindles include toc.ncx data that is used help navigate between sections, chapters etc, and to display tics on the progress bar. Is it possible to use this toc.ncx data instead of the above approaches to generate the EPUB TOC? Thanks!

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10-27-2012, 12:35 PM	#2
kovidgoyal creator of calibre Posts: 45,195 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	The order is reversed (2, then 1) and MOBI (as opposed to KF8) books do not support hierarchical table of contents in the ncx, so trying to generate the epub toc from the ncx would break badly on such books.

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