git-annex/doc/devblog/day_549__operating_on_hidden_files.mdwn
2018-10-19 17:56:53 -04:00

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Goal for today was to make `git annex sync --content` operate on files hidden by
`git annex adjust --hide-missing`. However, this got into the weeds pretty
quickly due to the problem of how to handle `--content-of=path` when
either the whole path or some files within it may be hidden.
Eventually I discovered that `git ls-files --with-tree` can be used to
get a combined list of files in the index plus files in another tree,
which in git-annex's case is the original branch that got adjusted.
It's not documented to work the way I'm using it (worrying), but it's
perfect, because git-annex already uses `git ls-files` extensively and this
could let lots of commands get support for operating on hidden files.
That said, I'm going to limit it to `git annex sync` for now,
because it would be a lot of work to make lots of commands support them,
and there could easily be commands where supporting them adds lots of
complexity or room for confusion.
Demo time:
joey@darkstar:/tmp> git clone ~/lib/sound/
Cloning into 'sound'...
done.
Checking out files: 100% (45727/45727), done.
joey@darkstar:/tmp> cd sound/
joey@darkstar:/tmp/sound> git annex init --version=6
init (merging origin/git-annex origin/synced/git-annex into git-annex...)
(scanning for unlocked files...)
ok
joey@darkstar:/tmp/sound> git annex adjust --hide-missing
adjust
Switched to branch 'adjusted/master(hidemissing)'
ok
joey@darkstar:/tmp/sound#master(hidemissing)> ls
podcasts
joey@darkstar:/tmp/sound#master(hidemissing)> ls podcasts
feeds
joey@darkstar:/tmp/sound#master(hidemissing)> git annex sync origin --no-push -C podcasts
...
joey@darkstar:/tmp/sound> time git annex adjust --hide-missing
adjust
ok
15.03user 3.11system 0:14.95elapsed 121%CPU (0avgtext+0avgdata 93280maxresident)k
0inputs+88outputs (0major+12206minor)pagefaults 0swaps
joey@darkstar:/tmp/sound#master(hidemissing)> ls podcasts
Astronomy_Cast/ Hacking_Culture/
Benjamen_Walker_s_Theory_of_Everything/ In_Our_Time/
Clarkesworld_Magazine___Science_Fiction___Fantasy/ Lightspeed_MagazineLightspeed_Magazine___Science_Fiction___Fantasy/
DatCast/ Long_Now__Seminars_About_Long_term_Thinking/
Escape_Pod/ Love___Radio/
Gravy/ feeds
Close to being able to use this on my phone. ;-)