v18 - How to extract subtitles from RAR archive in Kodi 18 ?

Hello,

From what i've understood from various threads, it seems xbmc.extract does not work anymore for .rar in Kodi 18. Instead, we have to use external libraries (my addon -> Virtual Filesystems) vfs.rar (with rar://) or vfs.libarchive (archive://)
 

• When I enable vfs.libarchive (and disable vfs.rar) and use below code:
  

__temp__ = '/storage/.kodi/userdata/addon_data/service.subtitles.zimuku/temp'

tempfile = '/storage/.kodi/userdata/addon_data/service.subtitles.zimuku/temp/subtitles.rar'

path = urllib.quote_plus(tempfile)

(dirs, files) = xbmcvfs.listdir('archive://%s' % (path))

for file in files:

  src = 'archive://' + path + '/' + file

  dest = os.path.join(__temp__, file)

xbmcvfs.copy(src, dest)

i got the following error:
ERROR: GetDirectory - Error getting archive://%2fstorage%2f.kodi%2fuserdata%2faddon_data%2fservice.subtitles.zimuku%2ftemp%2fsubtitles.rar/
But the rar file exists and the path is correct !

 

• Now, when I enable vfs.rar (and disable vfs.libarchive) and use below code:
  

__temp__ = '/storage/.kodi/userdata/addon_data/service.subtitles.zimuku/temp'

tempfile = '/storage/.kodi/userdata/addon_data/service.subtitles.zimuku/temp/subtitles.rar'

path = urllib.quote_plus(tempfile)

(dirs, files) = xbmcvfs.listdir('rar://%s' % (path))

for file in files:

  src = 'rar://' + path + '/' + file

  dest = os.path.join(__temp__, file)

xbmcvfs.copy(src, dest)

the script finds the .rar and xbmcvfs.listdir finds the subtitle inside it, but xbmcvfs.copy does not "extract" the subtitle file. Instead i got below error:
ERROR: AddOnLog: RAR archive support: filerar::open failed to open file in cache: special://temp/rarfolderWKscUK/subtitle_file.ass

When I look in the folder mentioned: "/storage/.kodi/temp/rarfolderWKscUK/", it is actually empty.
One more thing I do not understand is why it is using a temp folder, while I specified a "dest" folder ?!?

So basically non of vfs.rar or vfs.libarchive seem to work so far for me in Kodi 18 :/

is anyone else having issues to extract subtitles from a RAR archive with Kodi 18 ?
(i'm using CoreElec 8.99.2)

Thank you