beets

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Emilio G. Cota c69e96432a importer: use tarfile.open to handle compressed archives

Call tarfile.open instead of tarfile.TarFile from the importer so that
we can import compressed tar archives.

Note that tarfile.TarFile does not handle compressed archives:
$ python3
Python 3.8.2 (default, Apr 27 2020, 15:53:34)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tarfile
>>> tf = tarfile.TarFile("Lagrimas.tar.bz2")
Traceback (most recent call last):
[...]
tarfile.ReadError: invalid header
>>>

But tarfile.open does deal with them:
$ python3
Python 3.8.2 (default, Apr 27 2020, 15:53:34)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import tarfile
>>> tf = tarfile.open("Lagrimas.tar.bz2")
>>>

Tested:
$ ls Lagrimas/*.mp3 | wc -l
11
$ tar cjf Lagrimas.tar.bz2 Lagrimas/

- Before:
$ beet import Lagrimas.tar.bz2
extraction failed: invalid header
No files imported from /tmp/Lagrimas.tar.bz2

- After:
$ beet import Lagrimas.tar.bz2
[works]

Fixes #3606.

2020-05-31 23:35:31 -04:00