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We had some informal discussions on IRC about improving the output of the `whereis` command.
[[!toc levels=2]]
First version: columns
======================
[[mastensg]] started by implementing a [simple formatter](https://gist.github.com/mastensg/6500982) that would display things in columns [screenshot](http://www.ping.uio.no/~mastensg/whereis.png)
Second version: Xs
==================
After some suggestions from [[joey]], [[mastensg]] changed the format slightly ([screenshot](http://www.ping.uio.no/~mastensg/whereis2.png)):
[[!format txt """
17:01:34 <joeyh> foo
17:01:34 <joeyh> |bar
17:01:34 <joeyh> ||baz (untrusted)
17:01:34 <joeyh> |||
17:01:34 <joeyh> XXx 3? img.png
17:01:36 <joeyh> _X_ 1! bigfile
17:01:37 <joeyh> XX_ 2 zort
17:01:39 <joeyh> __x 1?! maybemissing
17:02:09 * joeyh does a s/\?/+/ in the above
17:02:24 <joeyh> and decrements the counters for untrusted
17:03:37 <joeyh> __x 0+! maybemissing
"""]]
Third version: incremental
==========================
Finally, [[anarcat]] worked on making it run faster on large repositories, in a [fork](https://gist.github.com/anarcat/6502988) of that first gist. Then paging was added (so headers are repeated).
Fourth version: tuning and blocked
==================================
[[TobiasTheViking]] provided some bugfixes, and the next step was to implement the trusted/untrusted detection, and have a counter.
This required more advanced parsing of the remotes, and instead of starting to do some JSON parsing, [[anarcat]] figured it was time to learn some Haskell instead.
Current status: needs merge
===========================
So right now, the most recent version of the python script is in [anarcat's gist](https://gist.github.com/anarcat/6502988) and works reasonably well. However, it doesn't distinguish between trusted and untrusted repos and so on.
Furthermore, we'd like to see this factored into the `whereis` command directly. A [raw.hs](http://codepad.org/miVJb5oK) file has been programmed by `mastensg`, and is now available in the above gist. It fits the desired output and prototypes, and has been `haskellized` thanks to [[guilhem]].
Now we just need to merge those marvelous functions in `Whereis.hs` - but I can't quite figure out where to throw that code, so I'll leave it to someone more familiar with the internals of git-annex. The most recent version is still in [anarcat's gist](https://gist.github.com/anarcat/6502988). --[[anarcat]]
Desired output
--------------
The output we're aiming for is:
foo
|bar
||baz (untrusted)
|||
XXx 2+ img.png
_X_ 1! bigfile
XX_ 2 zort
__x 0+! maybemissing
Legend:
* `_` - file missing from repo
* `x` - file may be present in untrusted repo
* `X` - file is present in trusted repo
* `[0-9]` - number of copies present in trusted repos
* `+` - indicates there may be more copies present
* `!` - indicates only one copy is left
Implementation notes
--------------------
[[!format txt """
20:48:18 <joeyh> if someone writes me a headerWhereis :: [(RemoteName, TrustLevel)] -> String and a formatWhereis :: [(RemoteName, TrustLevel, UUID)] -> [UUD] -> FileName -> String , I can do the rest ;)
20:49:22 <joeyh> make that second one formatWhereis :: [(RemoteName, TrueLevel, Bool)] -> FileName -> String
20:49:37 <joeyh> gah, typos
20:49:45 <joeyh> suppose you don't need the RemoteName either
"""]]
> So, I incorporated this, in a new remotes command.
> Showing all known repositories seemed a bit much
> (I have 30-some known repositories in some cases),
> so just showing configured remotes seems a good simplification.
> [[done]]
> --[[Joey]]
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