Using server side hook to check files changed

[Aaron Bentley]

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On 12-10-22 12:15 PM, Stuart Moore wrote:
> Hello,
> 
> We're trying to use a server-side hook to check which files are
> changed in a commit, and if those changes are inappropriate (e.g.
> including temporary files) prevent that change being committed.
> (Ideally I'd also be able to examine those files' contents before
> the commit happened.)
> 
> I've had a real problem working out how I'm meant to do this - I've
> been investigating the "pre_change_branch_tip" hook, but it doesn't
> seem to have any way of geting a list of the files changed in this
> commit.

Not itself, but a Branch has access to all the revisions, and
pre_change_branch_tip will tell you what revisions to look at.

Using the old_revid and new_revid, you can call
self.repository.revision_trees, to get the old and new trees, then
Tree.compare or Tree.iter_changes to compare them.

Aaron
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