78 lines
2.5 KiB
Markdown
78 lines
2.5 KiB
Markdown
Porting git-annex to Android will use the Android native SDK.
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A hopefully small Java app will be developed, which runs the webapp
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daemon, and a web browser to display it.
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### programs to port
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These will probably need to be bundled into the Android app, unless already
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available in the App Store.
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* ssh (native ssh needed for scp, not a client like ConnectBot)
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* rsync
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* gpg
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* git (not all git commands are needed,
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but core plumbing and a few like `git-add` are.)
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## GHC Android?
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Android's native SDK does not use glibc. GHC's runtime links with glibc.
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This could be an enormous problem. Other people want to see GHC able to
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target Android, of course, so someone may solve it before I get stuck on
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it.
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References:
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* <http://stackoverflow.com/questions/5151858/running-a-haskell-program-on-the-android-os>
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* <http://www.reddit.com/r/haskell/comments/ful84/haskell_on_android/>
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I've heard anecdoally that ipwnstudios not only has an IPhone GHC port,
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but also Android. Need to get in touch with them.
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<http://ipwnstudios.com/>
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### Android specific features
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The app should be aware of power status, and avoid expensive background
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jobs when low on battery or run flat out when plugged in.
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The app should be aware of network status, and avoid expensive data
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transfers when not on wifi. This may need to be configurable.
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### FAT sucks
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The main media partition will use some awful FAT filesystem format from
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1982 that cannot support git-annex's symlinks. (Hopefully it can at least
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handle all of git's filenames.) Possible approaches to this follow.
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(May want to consider which of these would make a Windows port easier too.)
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#### bare git repo with file browser
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Keep only a bare git repo on Android. The app would then need to include
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a file browser to access the files in there, and adding a file would move
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it into the repo.
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Not ideal.
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Could be improved some by registering git-annex as a file handling app on
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Android, allowing you to "send to" git-annex.
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#### implement git smudge filters
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See [[todo/smudge]].
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Difficult. Would make git-annex generally better.
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#### keep files outside bare git repo
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Use a bare git repo but don't keep files in `annex/objects`, instead
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leave them outside the repo, and add some local mapping to find them.
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Problem: Would leave files unlocked to modification, which might lose a
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version git-annex dependend upon existing on the phone. (Maybe the phone
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would have to be always considered an untrusted repo, which probably
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makes sense anyway.)
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#### crazy `LD_PRELOAD` wrapper
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Need I say more? (Also, Android's linker may not even support it.)
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