[Plugin] ePub3-itizer - epub3 output plugin for Sigil

[Doitsu]

Originally Posted by KevinH

added calibre:title_sort support here and if you pull Sigil from master just now, you can use the epub2 metadata gui to set any of these new calibre metadata items.

Thanks! I'll test all new items tomorrow.

[Turtle91]

I like BeckyEbook's icon as a standalone, however jcsalamon makes a very good point that the E₂→E₃ icon sets the stage nicely for an E₃→E₂ icon...

IF Doitsu agrees to that kind of icon, I would prefer the E₂→E₃/E₃→E₂.

In any case, Thank you so much for including the Calibre series tags with the ability to convert to ePub3. That was one of the roadblocks keeping me from spending the time learning how to convert!

[odamizu]

Greetings! I've been using ePub3-itizer successfully, but ran across an error message with one book:

..converting: OEBPS/content.opf
..parsing: OEBPS/toc.ncx
Traceback (most recent call last):
File "/Applications/Sigil.app/Contents/plugin_launchers/python/launcher.py", line 135, in launch
self.exitcode = target_script.run(container)
File "/Users/J/Library/Application Support/sigil-ebook/sigil/plugins/ePub3-itizer/plugin.py", line 251, in run
doctitle, toclist, pagelist = parse_ncx(bk, temp_dir)
File "/Users/J/Library/Application Support/sigil-ebook/sigil/plugins/ePub3-itizer/plugin.py", line 564, in parse_ncx
toclist.append((lvl, navlabel, href))
UnboundLocalError: local variable 'navlabel' referenced before assignment
Error: local variable 'navlabel' referenced before assignment

Thank you for any help!

ETA: I created a new toc.ncx (using Sigil's "Generate Table of Contents"), after which the ePub3-itizer plug-in succeeded in converting to ePub3. But I'm still curious as to what went wrong since the epub2 validated.

[KevinH]

bug is line 542 in plugin.py, "navlable" should have been "navlabel" to given an initial value of None. An updated value is generated from parsing the ncx but in your case there was no navlabel text and so no new value assigned.

Rebuilding the ncx "fixed" it by creating a navlabel which was then properly handled. I will fix this typo.

Thanks for the bug report.

[odamizu]

I didn't completely follow all that, but I'm thrilled my post was useful to you. Thanks again for all that you do!

[KevinH]

Fix has now been pushed to master on ePub3-itizer github site (http://github.com/kevinhendricks/ePub3-itizer) and will be included in the next release.

[KevinH]

BTW, you can grab the plugin.py file from github master and use it to replace the one in the plugin if you want this fix now.

[odamizu]

Perfect! Thanks!

[AlanHK]

Found that <big> tags are apparently not kosher in epub3.
Hard to confirm this as searching for "big" is pretty hopeless.

I had been using:

<big><big><big><big>H</big></big></big></big>

to make a standing cap and this seemed fine. Worked in epub2, passed epubcheck, worked when converted to mobi or AZW3.
Converted to epub3 and it still works, and it loaded on iBooks fine.
But it choked epubcheck.
I made an equivalent <span> and that passed.

Oddly, there seems no issue with <small>.

Probably too much to expect this to be fixed by the converter, but perhaps it could give a warning if the tag is present. I don't see it mentioned in the notes at the head of the thread.

Unrelated: when I save an epub3 file, it defaults to a folder in the top of "Documents and Settings" (a folder I never use for my working files). So I click up and down about 10 times to get to the folder I'm working in.
Then if I redo it and try again, it again starts at "Documents and Settings"....

Could it recall and use the last folder saved to; or default to the same folder as the epub2 file?

[DiapDealer]

EPUB3 is based on HTML5. The "big" tag is not allowed in HTML5, the "small" tag (for whatever reason) is.

[KevinH]

I could look for all "big" tags and replace each with a span tag with an inline style attribute style="font-size:larger" but many people do not like inline styles even if they are technically correct.

That said, no conversion can be perfect all of the time, so running epub-check after conversion can easily detect this case, and allow the user to fix it the way they wish.

I will look into auto replacement of big tags with spans and inline styles for the next release of epub-itizer.

[AlanHK]

Originally Posted by KevinH

I could look for all "big" tags and replace each with a span tag with an inline style attribute style="font-size:larger" but many people do not like inline styles even if they are technically correct.

Ugly but correct is better than non-conforming.

Originally Posted by KevinH

I will look into auto replacement of big tags with spans and inline styles for the next release of epub-itizer.

Thanks.

[KevinH]

See the new version linked in the first post of this thread.

Fixes include:

1) a typo fix for missing ncx labels when converting to nav

2) the "big" tag is not part of html5 and so these are converted to "span" tags with the equivalent inline styles


Have fun!

KevinH

[chloelo]

Appreciate your work a lot! What a big help indeed.
Unfortunately the plugin can be installed on sigil which is on a Mac but can't successfully output a epub3.0.
Here's the message shown in Sigil. Hopefully this can be fixed and that would be another big help!

Status: failed

Traceback (most recent call last):
File "/Users/bettina/Desktop/Sigil.app/Contents/plugin_launchers/python/launcher.py", line 134, in launch
target_script = __import__(script_module)
File "/Users/bettina/Library/Application Support/sigil-ebook/sigil/plugins/ePub3-itizer/plugin.py", line 35, in <module>
import tkinter
File "tkinter/__init__.py", line 35, in <module>
ImportError: dlopen(/Users/bettina/Desktop/Sigil.app/Contents/Frameworks/Python.framework/Versions/3.5/lib/python3.5/lib-dynload/_tkinter.cpython-35m-darwin.so, 2): Library not loaded: /Library/Frameworks/Tcl.framework/Versions/8.6/Tcl
Referenced from: /Users/bettina/Desktop/Sigil.app/Contents/Frameworks/Python.framework/Versions/3.5/lib/python3.5/lib-dynload/_tkinter.cpython-35m-darwin.so
Reason: image not found
Error: dlopen(/Users/bettina/Desktop/Sigil.app/Contents/Frameworks/Python.framework/Versions/3.5/lib/python3.5/lib-dynload/_tkinter.cpython-35m-darwin.so, 2): Library not loaded: /Library/Frameworks/Tcl.framework/Versions/8.6/Tcl
Referenced from: /Users/bettina/Desktop/Sigil.app/Contents/Frameworks/Python.framework/Versions/3.5/lib/python3.5/lib-dynload/_tkinter.cpython-35m-darwin.so
Reason: image not found

[Doitsu]

Originally Posted by chloelo

Unfortunately the plugin can be installed on sigil which is on a Mac but can't successfully output a epub3.0.

macOS users will need to install the ActiveTcl Community Edition.