how to identify deleted files in a commit in server side hook

[vinothree]

I setup bitbucket client side and server side hooks to do some checks on committed files.

I usually validate the content of the files. If a file deleted and that get committed I no need to do any checks on them, I have identified the deleted files in client side using git diff --cached --name-only --diff-filter=D command.

But In server side do not know how to identify deleted files in a commit and skip them ?

[Julius Davies [bit-booster.com]]

In a pre-receive hook you can do this for each commit you are analysing:

git diff <COMMIT> <COMMIT>~1 --name-only --diff-filter=D

In Java (inside my Bitbucket plugin code) I would do something like this:

GitScmCommandBuilder diffBuilder = gitBuilderFactory.builder(repo).command("diff");
diffBuilder.argument("--name-only");
diffBuilder.argument("--diff-filter=D");
diffBuilder.argument(commit + " " + commit + "~1");

The code will blow up if you happen to hit a root commit (e.g., first commit in a repository), but aside from that it should work.  It analyzes the diff along the first-parent path (hence the "~1") which is usually what you want.

(However, sometimes it's useful to detect merge commits and handle them differently.)