Provide solution to export content as tarball

[kelson42]

As we do not have a solution built-in by Sloopy I see two potential solution:

• Make a small PHP script which would be called online and this script would generate on the fly a tarball
• Write each night a tarball in the data directory (and then we have manually to retrieve it)

[florentk]

For the PHP script, this must work : https://secure.php.net/manual/en/function.passthru.php

[kelson42]

@florentk If you can catch the compressed stream on the output an "echo" it on the HTTP stream.

[kelson42]

@florentk I think we have an answer here https://stackoverflow.com/questions/4357073/lamp-how-to-create-zip-of-large-files-for-the-user-on-the-fly-without-disk-cp

[florentk]

fix in 8e4d514

[kelson42]

@florentk I reopen the ticket as the logs should not be exported. On the top of that I think the content mime-type should be set properly and also the filename should be of the type wikifundi-fr_2018-06-22.tar.bz2

[florentk]

fix in 9f8d32b