Enhancement add support for .fb2.zip files

[Juris Hasjanovs]

I would like support for zipped FB2 files like Filename.fb2.zip
Library with 25000 books in *.fb2 format have size approx 14GB.
This library in *.fb2.zip formats have size approx 5.7GB.
It's big difference.

Currently using: version 3.21.0 on Windows 10

Thanks!

[Kovid Goyal (kovid)]

calibre cannot support composite extensions (this is a limitation that
is very deep in calibre and cannot be changed). One could add support
for something like file.fb2z but for that to be useful it would need to
be recognized by something other than calibre.

 status wontfix

[Juris Hasjanovs (jurcuks)]

Hi, Kovid!
Thanks for quick replay.
Zipped FB2 format have extensions *.fb2.zip or *.fbz
My favorite reader Alreader, Total reader and some others support *.fbz files.
Support for zipped FB2 files make your program more usable.
I want place my library to cloud, and library size is actual. Size 14 GB or 5.7 GB is big difference.

Thanks

Juris

[Kovid Goyal (kovid)]

OK, shouldn't be hard to add support for fbz.

[Kovid Goyal (kovid)]

Fixed in branch master. The fix will be in the next release. calibre is usually released every alternate Friday.

 status fixreleased