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Re: [O] ePub construction
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From: |
Nick Dokos |
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Subject: |
Re: [O] ePub construction |
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Date: |
Tue, 13 Dec 2011 20:42:38 -0500 |
Alan L Tyree <address@hidden> wrote:
> G'day,
>
> Here are the modifications that I needed to make to the exported html
> file (using the standard exporter) in order to get a valid ePub
> document. http://threepress.org/document/epub-validate provides an
> on-line validation service.
>
> My document is relatively simple, but does have footnotes, citations
> and formatting commands.
>
> I will be happy to add a fuller description to worg if someone will
> point me to some instructions.
>
>
> 1. Make the html file have utf-8 encoding; there are probably several
> ways to do this, but I used the emacs23 menu MULE options on the org
> document.
>
> 2 Change the language statement by removing the "lang=" attribute:
>
> From: <html xmlns="http://www.w3.org/1999/xhtml"; lang="en"
> xml:lang="en">
>
> To: <html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en">
>
> 3 Change anchor descriptions associated with section headings by
> removing "name=" entries, for example,
>
> From: <a name="sec-1" id="sec-1"></a>
>
> To: <a id="sec-1"></a>
>
> NOTE: this can now be done by customising org-export-html-headline-
> anchor-format (Thanks Bastien!!)
>
> 4. Change anchor class="footref" by replacing "name=" with "id=". For
> example:
>
> from: <a class="footref" name="fnr.2" href="#fn.2">
>
> to: <a class="footref" id="fnr.2" href="#fn.2">
>
> 5. Change anchor class="footnum" by replacing "name=" with "id=". For
> example:
>
> from: <a class="footnum" name="fn.1" href="#fnr.1">1</a>
>
> to: <a class="footnum" id="fn.1" href="#fnr.1">1</a>
>
Interesting - I downloaded the epub validator, ran Calibre on a silly
little org-produced HTML file and duplicated your "lang" problem.
AFAICT, all of the problems you mention above are legal HTML4, so either
the epub spec (which I have not looked at: do you have a pointer?) is
made to trip people up by enforcing restrictions that they dreamed up,
or the validator is not quite as smart as it should be.
Just for kicks, I ran it against the Calibre Quick Start Guide (the only
"real" ebook I had access to) and it gave me an error :-)
,----
| Epubcheck Version 3.0b3
|
| ERROR: Calibre Quick Start Guide - John
Schember.epub/OEBPS/content.opf(5,57): attribute "file-as" not allowed here;
expected attribute "id", "opf:file-as", "opf:role" or "xml:lang"
|
| Check finished with warnings or errors!
`----
so, presuming that the ebook is "fine", I'm not sure how seriously to
take the validator.
Nick
PS In case it's not obvious, all I know about ebooks is what is
contained in this email. Caveat emptor.