Re: Pre-Commit hooks and Code Format checkers.

[Ryan Schmidt <su...@ryandesign.com>]

On Nov 30, 2007, at 10:57, Eric Berry wrote:

> I want to know if it's possible to insert a pre-commit hook that  
> can check the incoming code against a formatter.

It is.

> My company actually wants to set it up to automatically format any  
> code that comes in before it gets committed, but I know that the  
> pre-commit hook isn't supposed to change the actual commit.

Right, doing so would screw up your committers' working copies so you  
really shouldn't do that.

> From my understanding it's supposed to be more of a pass/fail  
> check. If the commit is "valid" (for however many reasons) then the  
> commit is allowed, otherwise it is denied.

Exactly. And you can print error messages to stderr, which will be  
sent back to the client upon such a failure, and you can thereby  
explain to the committer what they must change so their changes will  
be accepted.

> Is this possible?

Yes, here's an example which checks the syntax of Java files:

http://svn.haxx.se/users/archive-2006-06/0853.shtml

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