Guide to Use Git Pre-Commit Hook to format code

Inspired by this gist script, we use maven plugin to do the work instead of scalafmt

Run the following commands:

cd $ProjectRoot/hooks
./pre-commit-hook-install.sh

The hook will be added to local .git directory, and will be performed each time pre-commit.

Note that the if any changes are applied to pre-commit-hook.sh, the above instructions should be run again.

This pre-commit hook will force format before commit, if un-staged changes exists, the commit will abort when code is not already formatted. It is due to possible merge conflicts of stashed un-staged changes and un-staged formatted changes.