pre-commit

#!/bin/sh

# Verify that paths in index (i.e. files being committed) comply
# with the pipeline codestyle checks and create a commit
# only if all checks pass
# https://git-scm.com/docs/git-diff#Documentation/git-diff.txt---diff-filterACDMRTUXB82308203
files_changed=$(git diff --diff-filter=ACM --cached --name-only -- "*.py")
files_change_py=$(git diff --diff-filter=ACM --cached --name-only -- "*.py")
files_changed_no_tests=$(git diff --diff-filter=ACM --cached --name-only -- "*.py" |
    grep -ve "test_[^\\\/]\+\.py")

exit_on_error() {
    exit_code=$1
    if [ $exit_code -ne 0 ]; then
        >&2 echo "Codestyle checks failed. Commit aborted!"
        exit $exit_code
    fi
}

# Exit with 0 if no files changed in index (e.g. if amending the commit message only)
[ -z "$files_changed" ] && exit 0

if [ -n "$files_change_py" ]; then
  echo "Checking ruff..."
  ruff check --fix $files_change_py
  exit_on_error $?
fi

if [ -n "$files_change_py" ]; then
  echo "Formatting with ruff..."
  ruff format $files_change_py
  exit_on_error $?
fi

git add $files_changed
exit 0