Re: [9fans] git client-ish

[Chris McGee <newton688@gmail.com>]

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Thanks for the tool.

I managed to get it working on plan9front/386 Go 1.8 beta1 with a network connection. I will probably try it soon on plan9/arm.

Initially, it did not compile. Here are the quick fixes that I needed to make.

1) There is no syscall.Stat_t on plan9, instead the stat.Sys() returns a syscall.Dir

index.go:AddFile():
I changed stat to be fstat.Sys().(*syscall.Dir)
csec = stat.Mtime (This is how APE maps ctimes)
cnano = uint64(0) (There does not seem to be any nanosecond precision on mtimes in plan9)
uint32(stat.Qid.Path) (Roughly equivalent to inode numbers)
uint32(0) (GID’s are strings in plan9)
uint32(0) (UID’s are strings)
I assume that you want the library to be platform neutral so these should probably be abstracted.

2) Compile error

sha1.go:GetTree()
Sha1FromString(commit.Tree.Id.String())

The tests seem to be passing. I will try more rigorous tests. If the github bug gets fixed then I can submit pull requests.

Cheers,
Chris

> On Dec 3, 2016, at 2:20 PM, Dave MacFarlane <driusan@gmail.com> wrote:
> 
> I mentioned in another thread that I had started working on a pure go
> git client a while ago, then abandoned it, which gave me an itch to
> pick it up again. I've finally implemented enough that it can
> bootstrap its own development, and theoretically be used on Plan 9,
> but then I realized I don't currently have any machines with all of
> Plan 9, Go, and a network connection to test it on.
> 
> Would someone who has all of the above kindly try compiling it on Plan
> 9 and let me know if there's any problems? It's at
> https://github.com/driusan/go-git.You'll need the 9legacy git rc hack
> for Go to bootstrap it..
> 
> You should be able to:
> go-git init
> go-git clone*
> go-git fetch*
> go-git add file (from the root of the working directory only)
> go-git checkout file (same)
> go-git commit -m 'message'
> go-git status
> go-git merge (fast-forward only)
> go-git push works over https to GitLab, but not GitHub (GitHub
> responds with "200 OK" and no body but doesn't update the references,
> so I opened a ticket to see if I can get more information from them
> about why it doesn't work.. you also need to run as "go-git push
> localbranchname", which isn't the standard git command line.. )
> 
> The happy paths for a few other git plumbing commands are implemented.
> 
> The code's not very well written (I didn't know much about git
> internals or Go when I started, and mostly just wanted to hack
> something together that works at first), but if anyone wants to
> contribute, you can try to email me a patch using ape/diff in some
> kind of format that I can apply under DragonFlyBSD and commit under
> your name until whatever the issue with GitHub is is resolved..
> 
> * large repositories will likely crash because the Go zlib
> implementation is greedy on the underlying io.Reader, and the hack
> that I added to rewind to the end of the last compressed block when
> reading packfiles isn't 100% accurate.
> 
> - Dave
> 


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