I’ve been recently writing a pre hook for Git to check if any of the committed files violate any policies. I’m using GitBlit and it’s using JGit (an implementation of Git written in Java). You can’t use normal Git pre hooks with GitBlit, but you can write them in Groovy.

GitBlit’s author created an API to ease the use of JGit in pre hooks. I needed to detect if a file was renamed, and have access to its old path, as well as the new one.

Unfortunately, the documentation of PathChangeModel (which corresponds to a file in a commit) doesn’t state how to obtain the old path – the renamed file object’s path property contains the new path.

Luckily, it’s open source! I’ve had a look into the source code of the mentioned class and it turned out that, in case of a rename, the old path is stored in the name property. Take a look at the following example. Czytaj dalej →