[NTG-context] Re: Does ConTeXt still support ePub output?

[Henning Hraban Ramm <texml@fiee.net>]

Am 24.08.24 um 17:12 schrieb Joel via ntg-context:
> I recently learned I need to produce an ePub copy of my document, which 
> will be used to produce braille and other versions of my file for people 
> with limited or no vision. As I understand this is just like a ZIP file 
> containing a bunch of HTML files with some links to each other. Though I 
> could manually go and create tons of HTML files for it, I notice the 
> ConTeXt Garden does mention ePub output as a possibility, but this page 
> was updated in 2014, and I don't see any of hte sample code working.
> 
> Is ePub still a file format that ConTeXt can output? Does it require a 
> significant rewrite of ConTeXt document code to be produced or is there 
> a simple way to output this format?

Yes, I stopped working on ePub and updating the wiki pages, but did you 
even try?

You need
\setupbackend[export=yes] (see https://wiki.contextgarden.net/Export)
and probably
\setupexport[alternative=html],
that creates the necessary content files, and then

mtxrun --script epub yourdocument

creates an ePub, as documented in https://wiki.contextgarden.net/ePub

Unfortunately, the ePub at least doesn’t work with Calibre. I need to 
check what’s actually the problem.

When I last worked with ePub and created that wiki pages, I used my own 
scripts to make a working ePub from the export. I need to update that 
code and then the wiki. Don’t hold your breath.

The HTML export got much better recently, it now generates SVG for math 
and everything else where you use \startimage … \stopimage.
Maybe you can just use that HTML code without an ePub container.

Hraban
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