Re: [JGIT] Request for help

Hi,

On Wed, 2 Sep 2009, Nasser Grainawi wrote:

I'm looking to add 'git patch-id' to JGit and I could use a few 
pointers. I'm not very familiar with the JGit code base or Java, so 
please excuse any blatant oversights or unintelligent questions.

First off, is there a "hacking JGit" document anywhere? One of those 
would be great right now.

There have been some mails with details about JGit from Shawn (IIRC) to 
this very list.

So far I'm just trying to define the inputs and outputs. On Shawn's 
suggestion I'm planning on making it part of the org.spearce.jgit.patch 
package. C Git patch-id very generically has an input of a 'patch', so 
I'm thinking this implementation should use the Patch object.

C Git patch-id takes a valid patch as input; I do not think that you want 
to use the Patch object.

FWIW a patch-id is nothing else than the SHA-1 of a diff where the "diff", 
"index", "@@" lines and all the whitespace was removed.

This is not really difficult in Java, however, it relies on a working diff 
implementation (and IIRC my implementation has not yet been integrated 
into JGit).

Ciao,
Dscho