[GUI Plugin] EpubMerge

[Tharos]

I have just tested it. No problems. Everything works as expected. Thanks for your time and effort.
Tested with calibre 4.23 [64bit] and Windows 10 [64bit].

[JimmXinu]

FYI, I'm planning to release this later this week. I'm waiting to give translators a chance to translate the new strings added.

It's on Transifex if anyone wants to make sure their language is up to date.

[JimmXinu]

New Version Released

Version 2.11.0 - 10 Sep 2020
- Do merging in a BG ground.
- Do merge in temp files instead of memory.
- Automatically convert input epub3s to epub2s before merging.
- Add new messages for translation.
- Update translations.

FYI, on the off chance that there's a problem with the new version, you can find past versions in the EpubMerge github repo.

[Ces33]

I was just about to ask if there was a way to access earlier versions. Thanks for posting that!

[JSWolf]

Originally Posted by JimmXinu

New Version Released

Version 2.11.0 - 10 Sep 2020
- Do merging in a BG ground.
- Do merge in temp files instead of memory.
- Automatically convert input epub3s to epub2s before merging.
- Add new messages for translation.
- Update translations.

FYI, on the off chance that there's a problem with the new version, you can find past versions in the EpubMerge github repo.

Since you are converting ePub3 to ePub2, could you use the code for that to create a plugin to convert ePub3to ePub2? Thanks.

[JimmXinu]

Originally Posted by JSWolf

Since you are converting ePub3 to ePub2, could you use the code for that to create a plugin to convert ePub3to ePub2? Thanks.

Calibre convert can already do that for you. Choose Convert, set epub output, under 'EPUB output', there's a setting for EPUB version.

[JSWolf]

Originally Posted by JimmXinu

Calibre convert can already do that for you. Choose Convert, set epub output, under 'EPUB output', there's a setting for EPUB version.

I was hoping the plugin would be doing the ePub3 to ePub2 without actually doing a Calibre conversion.

[JimmXinu]

Nope. Just calls calibre's convert. Literally.

from calibre.ebooks.conversion.cli import main as ebook_convert_cli_main
...
container = get_container(fn)
if container.opf_version_parsed.major >= 3:
    print("=" * 50)
    print("Found EPUB3 for %s, automatically creating a temporary EPUB2 for merging...\n"%title)
    # this temp file is deleted when the BG process quits,
    # so don't expect it to still be there.
    epub2 = PersistentTemporaryFile(prefix="epub2_",
                                    suffix=".epub",
                                    dir=args['tdir'])
    fn2 = epub2.name
    # ebook-convert epub3.epub epub2.epub --epub-version=2
    ebook_convert_cli_main(['epubmerge calling convert',fn,fn2,'--epub-version=2','--no-default-epub-cover'])
    args['inputepubfns'][j] = fn2
    print("Converted to temporary EPUB2: %s"%fn2)

[DNSB]

Originally Posted by JSWolf

I was hoping the plugin would be doing the ePub3 to ePub2 without actually doing a Calibre conversion.

If you want to give it a try, Sigil has an epub2 output plugin that, according to the blurb, can "Convert most valid commercial epub3 fiction books to valid epub2 books for use with older epub2 apps and readers".

[JimmXinu]

FYI, I've stumbled upon a bug in EpubMerge -- don't try to set keyboard shortcuts from EpubMerge config right now; it doesn't work and prevents setting any keyboard shortcuts until Calibre is restarted.

Setting them from Calibre's regular keyboard shortcut dialog does still work.

Hopefully I'll get to it shortly, but I'm doing something else right now.

[JimmXinu]

Update to previous post: I only see this happen when accessing EpubMerge through Favourites plugin, and a small change appears to correct it, but not immediately.

Either way, I don't think it's enough of a problem to warrant a new release. It will just be in the next version unless somebody else bumps into it. The error expresses as KeyError: missing 'set_to_default' in keyboard.py.

[bino]

please can someone help with this error

calibre, version 3.21.0
ERROR: Install plugin failed: A problem occurred while installing this plugin. This plugin will now be uninstalled. Please post the error message in details below into the forum thread for this plugin and restart calibre.

Traceback (most recent call last):
File "/usr/lib/calibre/calibre/gui2/dialogs/plugin_updater.py", line 726, in _install_clicked
plugin = add_plugin(zip_path)
File "/usr/lib/calibre/calibre/customize/ui.py", line 461, in add_plugin
plugin = load_plugin(path_to_zip_file)
File "/usr/lib/calibre/calibre/customize/ui.py", line 60, in load_plugin
return loader.load(path_to_zip_file)
File "/usr/lib/calibre/calibre/customize/zipplugin.py", line 219, in load
ans.minimum_calibre_version))))
InvalidPlugin: The plugin at /tmp/calibre_3.21.0_tmp_ah2O5i/8G5WGe.zip needs a version of calibre >= 3.48.0

0 S - Linux Mint 19.3 Tricia 64-bit

[theducks]

Upgrade your Calibre using the Command found at the Calibre Linux page

[JimmXinu]

What theducks said is correct:

Originally Posted by bino

calibre, version 3.21.0
...
InvalidPlugin: The plugin at /tmp/calibre_3.21.0_tmp_ah2O5i/8G5WGe.zip needs a version of calibre >= 3.48.0

See https://calibre-ebook.com/download for newer versions of Calibre.

[allanahk]

After using EpubMerge on a selection of books is there a way to download metadata of the first book in the merged epub? I merge all my book series and would like to update some of the metadata that wasn't present in the individual books. Ideally I would like to avoid unmerging, downloading metadata individually and then remerging. Thanks